HISTRIA ATLAS

{
    "vessel_a": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636020277,
        "imo": 9259290,
        "name": "ELKA DELOS",
        "flag": "LIBERIA"
    },
    "min_distance_m": 123.7999999999999971578290569595992565155029296875,
    "avg_distance_m": 163.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 39.60000000000000142108547152020037174224853515625,
    "duration_minutes": 49.39999999999999857891452847979962825775146484375,
    "overlap_duration_s": 2962,
    "speed_a_avg": 0.450000000000000011102230246251565404236316680908203125,
    "speed_a_std": 0.7199999999999999733546474089962430298328399658203125,
    "speed_b_avg": 0.2800000000000000266453525910037569701671600341796875,
    "speed_b_std": 0.2399999999999999911182158029987476766109466552734375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.450000000000000011102230246251565404236316680908203125,
            "max_sog": 2
        },
        "vessel_b": {
            "avg_sog": 0.2800000000000000266453525910037569701671600341796875,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        }
    },
    "time_window": {
        "start": "2026-03-13T02:04:08+00:00",
        "end": "2026-03-13T02:53:30+00:00"
    },
    "points_count": {
        "vessel_a": 16,
        "vessel_b": 16
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 66,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 124m, avg 163m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 49 minutes"
            },
            "speed_stability": {
                "score": 14,
                "max": 20,
                "detail": "both nearly stationary; somewhat variable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b140m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 124m, avg 163m) for 49 minutes. Both vessels were slow-moving (avg speeds 0.5 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 34.7073989000000011628799256868660449981689453125,
            "lon": 33.319389000000001033185981214046478271484375
        },
        "time_window": {
            "start_ts": "2026-03-13T02:04:08+00:00",
            "end_ts": "2026-03-13T02:53:30+00:00"
        },
        "searched_at": "2026-03-13T08:45:14.349446+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG",
        "scene_datetime": "2026-03-12T15:40:28.859639Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": 33.14670600000000177942638401873409748077392578125,
            "min_lat": 33.42395400000000194040694623254239559173583984375,
            "max_lon": 36.2533949999999975943865138106048107147216796875,
            "max_lat": 35.338222999999999274223227985203266143798828125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_212245_thumbnail_20260313084517.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_212245_thumbnail_20260313084517.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

Mar 13, 2026 02:03 UTC 60/100 ▼

Vessel A: IMO 9849382 (CLEAROCEAN MAGIC) Liberia

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 303 meters
Average Distance: 310 meters
Duration: 39 minutes
Period: 2026-03-13T02:03:51+00:00 to 2026-03-13T02:42:50+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.1 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 60/100

Moderate-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 303m, avg 310m) for 39 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	10/25	Min distance 303m, avg 310m
Duration	5/25	Duration 39 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±3m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG • Acquired: 2026-03-12T15:40:28.859639Z • Platform: sentinel-1c

Click image to view full size

Searched: 2026-03-13T08:45:03.889567+00:00

{
    "vessel_a": {
        "mmsi": 636018900,
        "imo": 9849382,
        "name": "CLEAROCEAN MAGIC",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 303,
    "avg_distance_m": 309.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 3.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 39,
    "overlap_duration_s": 2339,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-13T02:03:51+00:00",
        "end": "2026-03-13T02:42:50+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 60,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 303m, avg 310m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 39 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 303m, avg 310m) for 39 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 34.7091577999999998382918420247733592987060546875,
            "lon": 33.32123109999999854835550650022923946380615234375
        },
        "time_window": {
            "start_ts": "2026-03-13T02:03:51+00:00",
            "end_ts": "2026-03-13T02:42:50+00:00"
        },
        "searched_at": "2026-03-13T08:45:03.889567+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG",
        "scene_datetime": "2026-03-12T15:40:28.859639Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": 33.14670600000000177942638401873409748077392578125,
            "min_lat": 33.42395400000000194040694623254239559173583984375,
            "max_lon": 36.2533949999999975943865138106048107147216796875,
            "max_lat": 35.338222999999999274223227985203266143798828125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_212243_thumbnail_20260313084508.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_212243_thumbnail_20260313084508.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

Mar 13, 2026 02:01 UTC 80.0% ▼

Zone: Eastern Mediterranean Monitoring Zone
Duration: 3h 29m
Data Points: 103 AIS positions
Period: 2026-03-13T02:01:09+00:00 to 2026-03-13T05:30:48+00:00

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 209.69999999999998863131622783839702606201171875,
    "points_in_zone": 103,
    "first_point": {
        "ts": "2026-03-13T02:01:09+00:00",
        "lat": 34.7081749999999971123543218709528446197509765625,
        "lon": 33.32000169999999883430064073763787746429443359375
    },
    "last_point": {
        "ts": "2026-03-13T05:30:48+00:00",
        "lat": 34.46666499999999899728209129534661769866943359375,
        "lon": 33.8149532999999991034201229922473430633544921875
    }
}

Sts🛰️✗ Eastern Mediterranean Monitoring Zone

Mar 13, 2026 01:27 UTC 70/100 ▼

Vessel A: IMO 9723007 (ALDEBARAN) Bahamas

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 322 meters
Average Distance: 328 meters
Duration: 1h 6m
Period: 2026-03-13T01:27:56+00:00 to 2026-03-13T02:33:57+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 322m, avg 328m) for 66 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	10/25	Min distance 322m, avg 328m
Duration	15/25	Duration 66 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±4m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-03-13T07:45:01.534411+00:00

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 311000232,
        "imo": 9723007,
        "name": "ALDEBARAN",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 322.3999999999999772626324556767940521240234375,
    "avg_distance_m": 327.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 3.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 66,
    "overlap_duration_s": 3961,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-13T01:27:56+00:00",
        "end": "2026-03-13T02:33:57+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 322m, avg 328m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 66 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 322m, avg 328m) for 66 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70892409999999728142938693054020404815673828125,
            "lon": 33.321556700000002138040144927799701690673828125
        },
        "time_window": {
            "start_ts": "2026-03-13T01:27:56+00:00",
            "end_ts": "2026-03-13T02:33:57+00:00"
        },
        "searched_at": "2026-03-13T07:45:01.534411+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Sts🛰️✗ Eastern Mediterranean Monitoring Zone

Mar 13, 2026 01:05 UTC 75/100 ▼

Vessel A: IMO 9849382 (CLEAROCEAN MAGIC) Liberia

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 303 meters
Average Distance: 310 meters
Duration: 1h 37m
Period: 2026-03-13T01:05:11+00:00 to 2026-03-13T02:42:50+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 303m, avg 310m) for 98 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	10/25	Min distance 303m, avg 310m
Duration	20/25	Duration 98 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±3m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-03-13T07:45:12.168003+00:00

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636018900,
        "imo": 9849382,
        "name": "CLEAROCEAN MAGIC",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 303,
    "avg_distance_m": 309.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 2.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 97.7000000000000028421709430404007434844970703125,
    "overlap_duration_s": 5859,
    "speed_a_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-13T01:05:11+00:00",
        "end": "2026-03-13T02:42:50+00:00"
    },
    "points_count": {
        "vessel_a": 26,
        "vessel_b": 26
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 303m, avg 310m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 98 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 303m, avg 310m) for 98 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70915959999999955698513076640665531158447265625,
            "lon": 33.321225499999997055056155659258365631103515625
        },
        "time_window": {
            "start_ts": "2026-03-13T01:05:11+00:00",
            "end_ts": "2026-03-13T02:42:50+00:00"
        },
        "searched_at": "2026-03-13T07:45:12.168003+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Sts🛰️? Eastern Mediterranean Monitoring Zone

Mar 13, 2026 01:04 UTC 79/100 ▼

Vessel A: IMO 9800790 (HISTRIA ATLAS) Liberia

Vessel B: IMO 9259290 (ELKA DELOS) LIBERIA

Minimum Distance: 124 meters
Average Distance: 158 meters
Duration: 1h 49m
Period: 2026-03-13T01:04:08+00:00 to 2026-03-13T02:53:30+00:00
Vessel A Avg Speed: 0.2 knots
Vessel B Avg Speed: 0.3 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 79/100

Moderate-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 124m, avg 158m) for 109 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	20/25	Min distance 124m, avg 158m
Duration	20/25	Duration 109 minutes
Speed Stability	14/20	both nearly stationary; somewhat variable speeds
Distance Consistency	15/15	Distance variance ±29m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG • Acquired: 2026-03-12T15:40:28.859639Z • Platform: sentinel-1c

Click image to view full size

Searched: 2026-03-13T08:00:04.651167+00:00

{
    "vessel_a": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636020277,
        "imo": 9259290,
        "name": "ELKA DELOS",
        "flag": "LIBERIA"
    },
    "min_distance_m": 123.7999999999999971578290569595992565155029296875,
    "avg_distance_m": 157.599999999999994315658113919198513031005859375,
    "distance_consistency_m": 28.699999999999999289457264239899814128875732421875,
    "duration_minutes": 109.400000000000005684341886080801486968994140625,
    "overlap_duration_s": 6562,
    "speed_a_avg": 0.2300000000000000099920072216264088638126850128173828125,
    "speed_a_std": 0.560000000000000053290705182007513940334320068359375,
    "speed_b_avg": 0.330000000000000015543122344752191565930843353271484375,
    "speed_b_std": 0.2399999999999999911182158029987476766109466552734375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.2300000000000000099920072216264088638126850128173828125,
            "max_sog": 2
        },
        "vessel_b": {
            "avg_sog": 0.330000000000000015543122344752191565930843353271484375,
            "max_sog": 0.90000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-13T01:04:08+00:00",
        "end": "2026-03-13T02:53:30+00:00"
    },
    "points_count": {
        "vessel_a": 31,
        "vessel_b": 31
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 79,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 124m, avg 158m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 109 minutes"
            },
            "speed_stability": {
                "score": 14,
                "max": 20,
                "detail": "both nearly stationary; somewhat variable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b129m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 124m, avg 158m) for 109 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 34.707471400000002859087544493377208709716796875,
            "lon": 33.31954110000000213176463148556649684906005859375
        },
        "time_window": {
            "start_ts": "2026-03-13T01:04:08+00:00",
            "end_ts": "2026-03-13T02:53:30+00:00"
        },
        "searched_at": "2026-03-13T08:00:04.651167+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG",
        "scene_datetime": "2026-03-12T15:40:28.859639Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": 33.14670600000000177942638401873409748077392578125,
            "min_lat": 33.42395400000000194040694623254239559173583984375,
            "max_lon": 36.2533949999999975943865138106048107147216796875,
            "max_lat": 35.338222999999999274223227985203266143798828125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_212061_thumbnail_20260313080009.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_212061_thumbnail_20260313080009.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

Mar 13, 2026 01:01 UTC 80.0% ▼

Zone: Eastern Mediterranean Monitoring Zone
Duration: 4h 29m
Data Points: 118 AIS positions
Period: 2026-03-13T01:01:07+00:00 to 2026-03-13T05:30:48+00:00

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 269.69999999999998863131622783839702606201171875,
    "points_in_zone": 118,
    "first_point": {
        "ts": "2026-03-13T01:01:07+00:00",
        "lat": 34.70817670000000276786522590555250644683837890625,
        "lon": 33.3200649999999995998223312199115753173828125
    },
    "last_point": {
        "ts": "2026-03-13T05:30:48+00:00",
        "lat": 34.46666499999999899728209129534661769866943359375,
        "lon": 33.8149532999999991034201229922473430633544921875
    }
}

Mar 13, 2026 01:01 UTC 75.0% ▼

Duration: 1h 58m
Radius: 987 meters
Data Points: 35 AIS positions
Centroid: 34.7077, 33.3191
Zone: Eastern Mediterranean Monitoring Zone

{
    "radius_m": 986.8999999999999772626324556767940521240234375,
    "duration_minutes": 118.7000000000000028421709430404007434844970703125,
    "points": 35,
    "centroid": {
        "lat": 34.70769004857142903119893162511289119720458984375,
        "lon": 33.3190972857142924112849868834018707275390625
    },
    "bbox": {
        "min_lat": 34.7020432999999997036866261623799800872802734375,
        "min_lon": 33.31077330000000102927515399642288684844970703125,
        "max_lat": 34.7082233000000002220986061729490756988525390625,
        "max_lon": 33.32009330000000346672095474787056446075439453125
    },
    "zone_id": "discovered_037"
}

Mar 13, 2026 00:04 UTC 87/100 ▼

Vessel A: IMO 9800790 (HISTRIA ATLAS) Liberia

Vessel B: IMO 9259290 (ELKA DELOS) LIBERIA

Minimum Distance: 124 meters
Average Distance: 157 meters
Duration: 2h 49m
Period: 2026-03-13T00:04:07+00:00 to 2026-03-13T02:53:30+00:00
Vessel A Avg Speed: 0.2 knots
Vessel B Avg Speed: 0.3 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 87/100

High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 124m, avg 157m) for 169 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	20/25	Min distance 124m, avg 157m
Duration	25/25	Duration 169 minutes
Speed Stability	17/20	both nearly stationary; stable speeds
Distance Consistency	15/15	Distance variance ±23m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG • Acquired: 2026-03-12T15:40:28.859639Z • Platform: sentinel-1c

Click image to view full size

Searched: 2026-03-13T07:00:06.684961+00:00

{
    "vessel_a": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636020277,
        "imo": 9259290,
        "name": "ELKA DELOS",
        "flag": "LIBERIA"
    },
    "min_distance_m": 123.7999999999999971578290569595992565155029296875,
    "avg_distance_m": 156.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 23.199999999999999289457264239899814128875732421875,
    "duration_minutes": 169.400000000000005684341886080801486968994140625,
    "overlap_duration_s": 10163,
    "speed_a_avg": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_a_std": 0.460000000000000019984014443252817727625370025634765625,
    "speed_b_avg": 0.330000000000000015543122344752191565930843353271484375,
    "speed_b_std": 0.2200000000000000011102230246251565404236316680908203125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1600000000000000033306690738754696212708950042724609375,
            "max_sog": 2
        },
        "vessel_b": {
            "avg_sog": 0.330000000000000015543122344752191565930843353271484375,
            "max_sog": 0.90000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-13T00:04:07+00:00",
        "end": "2026-03-13T02:53:30+00:00"
    },
    "points_count": {
        "vessel_a": 47,
        "vessel_b": 47
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 87,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 124m, avg 157m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 169 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b123m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 124m, avg 157m) for 169 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 34.7075037999999977955667418427765369415283203125,
            "lon": 33.31959549999999836700226296670734882354736328125
        },
        "time_window": {
            "start_ts": "2026-03-13T00:04:07+00:00",
            "end_ts": "2026-03-13T02:53:30+00:00"
        },
        "searched_at": "2026-03-13T07:00:06.684961+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG",
        "scene_datetime": "2026-03-12T15:40:28.859639Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": 33.14670600000000177942638401873409748077392578125,
            "min_lat": 33.42395400000000194040694623254239559173583984375,
            "max_lon": 36.2533949999999975943865138106048107147216796875,
            "max_lat": 35.338222999999999274223227985203266143798828125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211886_thumbnail_20260313070010.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211886_thumbnail_20260313070010.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

Mar 13, 2026 00:03 UTC 80/100 ▼

Vessel A: IMO 9723007 (ALDEBARAN) Bahamas

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 322 meters
Average Distance: 328 meters
Duration: 2h 30m
Period: 2026-03-13T00:03:56+00:00 to 2026-03-13T02:33:57+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 322m, avg 328m) for 150 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	10/25	Min distance 322m, avg 328m
Duration	25/25	Duration 150 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±3m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG • Acquired: 2026-03-12T15:40:28.859639Z • Platform: sentinel-1c

Click image to view full size

Searched: 2026-03-13T06:30:11.685209+00:00

{
    "vessel_a": {
        "mmsi": 311000232,
        "imo": 9723007,
        "name": "ALDEBARAN",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 322.3999999999999772626324556767940521240234375,
    "avg_distance_m": 327.5,
    "distance_consistency_m": 3.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 150,
    "overlap_duration_s": 9001,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-13T00:03:56+00:00",
        "end": "2026-03-13T02:33:57+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 322m, avg 328m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 150 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 322m, avg 328m) for 150 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 34.70893439999999685596776544116437435150146484375,
            "lon": 33.32155139999999704514266340993344783782958984375
        },
        "time_window": {
            "start_ts": "2026-03-13T00:03:56+00:00",
            "end_ts": "2026-03-13T02:33:57+00:00"
        },
        "searched_at": "2026-03-13T06:30:11.685209+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG",
        "scene_datetime": "2026-03-12T15:40:28.859639Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": 33.14670600000000177942638401873409748077392578125,
            "min_lat": 33.42395400000000194040694623254239559173583984375,
            "max_lon": 36.2533949999999975943865138106048107147216796875,
            "max_lat": 35.338222999999999274223227985203266143798828125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211740_thumbnail_20260313063016.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211740_thumbnail_20260313063016.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

Mar 13, 2026 00:02 UTC 80/100 ▼

Vessel A: IMO 9849382 (CLEAROCEAN MAGIC) Liberia

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 303 meters
Average Distance: 310 meters
Duration: 2h 40m
Period: 2026-03-13T00:02:12+00:00 to 2026-03-13T02:42:50+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 303m, avg 310m) for 161 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	10/25	Min distance 303m, avg 310m
Duration	25/25	Duration 161 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±3m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG • Acquired: 2026-03-12T15:40:28.859639Z • Platform: sentinel-1c

Click image to view full size

Searched: 2026-03-13T06:45:14.758692+00:00

{
    "vessel_a": {
        "mmsi": 636018900,
        "imo": 9849382,
        "name": "CLEAROCEAN MAGIC",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 303,
    "avg_distance_m": 309.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 3.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 160.599999999999994315658113919198513031005859375,
    "overlap_duration_s": 9638,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-13T00:02:12+00:00",
        "end": "2026-03-13T02:42:50+00:00"
    },
    "points_count": {
        "vessel_a": 43,
        "vessel_b": 43
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 303m, avg 310m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 161 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 303m, avg 310m) for 161 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 34.70917250000000109366737888194620609283447265625,
            "lon": 33.32122460000000074842319008894264698028564453125
        },
        "time_window": {
            "start_ts": "2026-03-13T00:02:12+00:00",
            "end_ts": "2026-03-13T02:42:50+00:00"
        },
        "searched_at": "2026-03-13T06:45:14.758692+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG",
        "scene_datetime": "2026-03-12T15:40:28.859639Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": 33.14670600000000177942638401873409748077392578125,
            "min_lat": 33.42395400000000194040694623254239559173583984375,
            "max_lon": 36.2533949999999975943865138106048107147216796875,
            "max_lat": 35.338222999999999274223227985203266143798828125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211884_thumbnail_20260313064518.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211884_thumbnail_20260313064518.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

Mar 13, 2026 00:01 UTC 80.0% ▼

Zone: Eastern Mediterranean Monitoring Zone
Duration: 5h 29m
Data Points: 134 AIS positions
Period: 2026-03-13T00:01:08+00:00 to 2026-03-13T05:30:48+00:00

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 329.69999999999998863131622783839702606201171875,
    "points_in_zone": 134,
    "first_point": {
        "ts": "2026-03-13T00:01:08+00:00",
        "lat": 34.708183300000001736407284624874591827392578125,
        "lon": 33.31998999999999711008058511652052402496337890625
    },
    "last_point": {
        "ts": "2026-03-13T05:30:48+00:00",
        "lat": 34.46666499999999899728209129534661769866943359375,
        "lon": 33.8149532999999991034201229922473430633544921875
    }
}

Mar 13, 2026 00:01 UTC 75.0% ▼

Duration: 2h 58m
Radius: 1,019 meters
Data Points: 51 AIS positions
Centroid: 34.7079, 33.3194
Zone: Eastern Mediterranean Monitoring Zone

{
    "radius_m": 1018.700000000000045474735088646411895751953125,
    "duration_minutes": 178.69999999999998863131622783839702606201171875,
    "points": 51,
    "centroid": {
        "lat": 34.70785516470588305537603446282446384429931640625,
        "lon": 33.31938222156862394740528543479740619659423828125
    },
    "bbox": {
        "min_lat": 34.7020432999999997036866261623799800872802734375,
        "min_lon": 33.31077330000000102927515399642288684844970703125,
        "max_lat": 34.70825500000000118916432256810367107391357421875,
        "max_lon": 33.32009330000000346672095474787056446075439453125
    },
    "zone_id": "discovered_037"
}

Mar 12, 2026 23:09 UTC 80/100 ▼

Vessel A: IMO 9723007 (ALDEBARAN) Bahamas

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 322 meters
Average Distance: 328 meters
Duration: 3h 24m
Period: 2026-03-12T23:09:56+00:00 to 2026-03-13T02:33:57+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 322m, avg 328m) for 204 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	10/25	Min distance 322m, avg 328m
Duration	25/25	Duration 204 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±4m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG • Acquired: 2026-03-12T15:40:28.859639Z • Platform: sentinel-1c

Click image to view full size

Searched: 2026-03-13T05:45:01.304438+00:00

{
    "vessel_a": {
        "mmsi": 311000232,
        "imo": 9723007,
        "name": "ALDEBARAN",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 321.5,
    "avg_distance_m": 327.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 4.5,
    "duration_minutes": 204,
    "overlap_duration_s": 12241,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-12T23:09:56+00:00",
        "end": "2026-03-13T02:33:57+00:00"
    },
    "points_count": {
        "vessel_a": 17,
        "vessel_b": 17
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 322m, avg 328m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 204 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 322m, avg 328m) for 204 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 34.708940200000000686486600898206233978271484375,
            "lon": 33.32154919999999975743776303716003894805908203125
        },
        "time_window": {
            "start_ts": "2026-03-12T23:09:56+00:00",
            "end_ts": "2026-03-13T02:33:57+00:00"
        },
        "searched_at": "2026-03-13T05:45:01.304438+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG",
        "scene_datetime": "2026-03-12T15:40:28.859639Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": 33.14670600000000177942638401873409748077392578125,
            "min_lat": 33.42395400000000194040694623254239559173583984375,
            "max_lon": 36.2533949999999975943865138106048107147216796875,
            "max_lat": 35.338222999999999274223227985203266143798828125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211553_thumbnail_20260313054506.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211553_thumbnail_20260313054506.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

Sts🛰️✗ Eastern Mediterranean Monitoring Zone

Mar 12, 2026 23:07 UTC 87/100 ▼

Vessel A: IMO 9800790 (HISTRIA ATLAS) Liberia

Vessel B: IMO 9259290 (ELKA DELOS) LIBERIA

Minimum Distance: 124 meters
Average Distance: 156 meters
Duration: 3h 46m
Period: 2026-03-12T23:07:08+00:00 to 2026-03-13T02:53:30+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.3 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 87/100

High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 124m, avg 156m) for 226 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	20/25	Min distance 124m, avg 156m
Duration	25/25	Duration 226 minutes
Speed Stability	17/20	both nearly stationary; stable speeds
Distance Consistency	15/15	Distance variance ±20m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-03-13T05:45:18.882595+00:00

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636020277,
        "imo": 9259290,
        "name": "ELKA DELOS",
        "flag": "LIBERIA"
    },
    "min_distance_m": 123.7999999999999971578290569595992565155029296875,
    "avg_distance_m": 156,
    "distance_consistency_m": 20.300000000000000710542735760100185871124267578125,
    "duration_minutes": 226.400000000000005684341886080801486968994140625,
    "overlap_duration_s": 13582,
    "speed_a_avg": 0.13000000000000000444089209850062616169452667236328125,
    "speed_a_std": 0.40000000000000002220446049250313080847263336181640625,
    "speed_b_avg": 0.330000000000000015543122344752191565930843353271484375,
    "speed_b_std": 0.2099999999999999922284388276239042170345783233642578125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.13000000000000000444089209850062616169452667236328125,
            "max_sog": 2
        },
        "vessel_b": {
            "avg_sog": 0.330000000000000015543122344752191565930843353271484375,
            "max_sog": 0.90000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-12T23:07:08+00:00",
        "end": "2026-03-13T02:53:30+00:00"
    },
    "points_count": {
        "vessel_a": 62,
        "vessel_b": 62
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 87,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 124m, avg 156m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 226 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b120m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 124m, avg 156m) for 226 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.7075157000000018570062820799648761749267578125,
            "lon": 33.31962039999999802830643602646887302398681640625
        },
        "time_window": {
            "start_ts": "2026-03-12T23:07:08+00:00",
            "end_ts": "2026-03-13T02:53:30+00:00"
        },
        "searched_at": "2026-03-13T05:45:18.882595+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Sts🛰️✗ Eastern Mediterranean Monitoring Zone

Mar 12, 2026 23:02 UTC 80/100 ▼

Vessel A: IMO 9849382 (CLEAROCEAN MAGIC) Liberia

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 303 meters
Average Distance: 310 meters
Duration: 3h 40m
Period: 2026-03-12T23:02:16+00:00 to 2026-03-13T02:42:50+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 303m, avg 310m) for 221 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	10/25	Min distance 303m, avg 310m
Duration	25/25	Duration 221 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±3m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-03-13T05:45:09.396024+00:00

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636018900,
        "imo": 9849382,
        "name": "CLEAROCEAN MAGIC",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 303,
    "avg_distance_m": 310.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 3,
    "duration_minutes": 220.599999999999994315658113919198513031005859375,
    "overlap_duration_s": 13234,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-12T23:02:16+00:00",
        "end": "2026-03-13T02:42:50+00:00"
    },
    "points_count": {
        "vessel_a": 56,
        "vessel_b": 56
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 303m, avg 310m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 221 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 303m, avg 310m) for 221 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.7091697999999979629137669689953327178955078125,
            "lon": 33.32122389999999967358235153369605541229248046875
        },
        "time_window": {
            "start_ts": "2026-03-12T23:02:16+00:00",
            "end_ts": "2026-03-13T02:42:50+00:00"
        },
        "searched_at": "2026-03-13T05:45:09.396024+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Zone Dwell Eastern Mediterranean Monitoring Zone

Mar 12, 2026 23:01 UTC 80.0% ▼

Zone: Eastern Mediterranean Monitoring Zone
Duration: 6h 29m
Data Points: 149 AIS positions
Period: 2026-03-12T23:01:10+00:00 to 2026-03-13T05:30:48+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 389.6000000000000227373675443232059478759765625,
    "points_in_zone": 149,
    "first_point": {
        "ts": "2026-03-12T23:01:10+00:00",
        "lat": 34.7082300000000003592504072003066539764404296875,
        "lon": 33.3200199999999995270627550780773162841796875
    },
    "last_point": {
        "ts": "2026-03-13T05:30:48+00:00",
        "lat": 34.46666499999999899728209129534661769866943359375,
        "lon": 33.8149532999999991034201229922473430633544921875
    }
}

Methodology: 2026.01.18

Loiter Eastern Mediterranean Monitoring Zone

Mar 12, 2026 23:01 UTC 75.0% ▼

Duration: 3h 58m
Radius: 1,034 meters
Data Points: 66 AIS positions
Centroid: 34.7079, 33.3195
Zone: Eastern Mediterranean Monitoring Zone

Show Raw Evidence JSON

{
    "radius_m": 1034.200000000000045474735088646411895751953125,
    "duration_minutes": 238.69999999999998863131622783839702606201171875,
    "points": 66,
    "centroid": {
        "lat": 34.7079347015151569166846456937491893768310546875,
        "lon": 33.31952250000000503860064782202243804931640625
    },
    "bbox": {
        "min_lat": 34.7020432999999997036866261623799800872802734375,
        "min_lon": 33.31077330000000102927515399642288684844970703125,
        "max_lat": 34.7082716999999973950252751819789409637451171875,
        "max_lon": 33.32009330000000346672095474787056446075439453125
    },
    "zone_id": "discovered_037"
}

Methodology: 2026.01.18

Sts🛰️? Eastern Mediterranean Monitoring Zone

Mar 12, 2026 22:21 UTC 80/100 ▼

Vessel A: IMO 9723007 (ALDEBARAN) Bahamas

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 322 meters
Average Distance: 327 meters
Duration: 4h 12m
Period: 2026-03-12T22:21:57+00:00 to 2026-03-13T02:33:57+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 322m, avg 327m) for 252 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	10/25	Min distance 322m, avg 327m
Duration	25/25	Duration 252 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±4m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG • Acquired: 2026-03-12T15:40:28.859639Z • Platform: sentinel-1c

Click image to view full size

Searched: 2026-03-13T05:00:01.310740+00:00

{
    "vessel_a": {
        "mmsi": 311000232,
        "imo": 9723007,
        "name": "ALDEBARAN",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 321.5,
    "avg_distance_m": 327.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 4.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 252,
    "overlap_duration_s": 15120,
    "speed_a_avg": 0,
    "speed_a_std": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-12T22:21:57+00:00",
        "end": "2026-03-13T02:33:57+00:00"
    },
    "points_count": {
        "vessel_a": 21,
        "vessel_b": 21
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 322m, avg 327m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 252 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 322m, avg 327m) for 252 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 34.70894340000000255486156675033271312713623046875,
            "lon": 33.32154659999999779529389343224465847015380859375
        },
        "time_window": {
            "start_ts": "2026-03-12T22:21:57+00:00",
            "end_ts": "2026-03-13T02:33:57+00:00"
        },
        "searched_at": "2026-03-13T05:00:01.310740+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG",
        "scene_datetime": "2026-03-12T15:40:28.859639Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": 33.14670600000000177942638401873409748077392578125,
            "min_lat": 33.42395400000000194040694623254239559173583984375,
            "max_lon": 36.2533949999999975943865138106048107147216796875,
            "max_lat": 35.338222999999999274223227985203266143798828125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211511_thumbnail_20260313050005.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211511_thumbnail_20260313050005.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

Mar 12, 2026 22:07 UTC 87/100 ▼

Vessel A: IMO 9800790 (HISTRIA ATLAS) Liberia

Vessel B: IMO 9259290 (ELKA DELOS) LIBERIA

Minimum Distance: 124 meters
Average Distance: 156 meters
Duration: 4h 46m
Period: 2026-03-12T22:07:07+00:00 to 2026-03-13T02:53:30+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.3 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 87/100

High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 124m, avg 156m) for 286 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	20/25	Min distance 124m, avg 156m
Duration	25/25	Duration 286 minutes
Speed Stability	17/20	both nearly stationary; stable speeds
Distance Consistency	15/15	Distance variance ±18m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG • Acquired: 2026-03-12T15:40:28.859639Z • Platform: sentinel-1c

Click image to view full size

Searched: 2026-03-13T04:45:17.553438+00:00

{
    "vessel_a": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636020277,
        "imo": 9259290,
        "name": "ELKA DELOS",
        "flag": "LIBERIA"
    },
    "min_distance_m": 123.7999999999999971578290569595992565155029296875,
    "avg_distance_m": 156,
    "distance_consistency_m": 18,
    "duration_minutes": 286.3999999999999772626324556767940521240234375,
    "overlap_duration_s": 17183,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.35999999999999998667732370449812151491641998291015625,
    "speed_b_avg": 0.289999999999999980015985556747182272374629974365234375,
    "speed_b_std": 0.2099999999999999922284388276239042170345783233642578125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 2
        },
        "vessel_b": {
            "avg_sog": 0.289999999999999980015985556747182272374629974365234375,
            "max_sog": 0.90000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-12T22:07:07+00:00",
        "end": "2026-03-13T02:53:30+00:00"
    },
    "points_count": {
        "vessel_a": 79,
        "vessel_b": 79
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 87,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 124m, avg 156m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 286 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b118m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 124m, avg 156m) for 286 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 34.70752499999999685087459511123597621917724609375,
            "lon": 33.31964020000000203935996978543698787689208984375
        },
        "time_window": {
            "start_ts": "2026-03-12T22:07:07+00:00",
            "end_ts": "2026-03-13T02:53:30+00:00"
        },
        "searched_at": "2026-03-13T04:45:17.553438+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG",
        "scene_datetime": "2026-03-12T15:40:28.859639Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": 33.14670600000000177942638401873409748077392578125,
            "min_lat": 33.42395400000000194040694623254239559173583984375,
            "max_lon": 36.2533949999999975943865138106048107147216796875,
            "max_lat": 35.338222999999999274223227985203266143798828125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211510_thumbnail_20260313044520.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211510_thumbnail_20260313044520.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

Mar 12, 2026 22:02 UTC 85/100 ▼

Vessel A: IMO 9849382 (CLEAROCEAN MAGIC) Liberia

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 298 meters
Average Distance: 309 meters
Duration: 4h 40m
Period: 2026-03-12T22:02:12+00:00 to 2026-03-13T02:42:50+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 298m, avg 309m) for 281 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	15/25	Min distance 298m, avg 309m
Duration	25/25	Duration 281 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±4m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG • Acquired: 2026-03-12T15:40:28.859639Z • Platform: sentinel-1c

Click image to view full size

Searched: 2026-03-13T04:45:07.449326+00:00

{
    "vessel_a": {
        "mmsi": 636018900,
        "imo": 9849382,
        "name": "CLEAROCEAN MAGIC",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 298,
    "avg_distance_m": 309.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 3.5,
    "duration_minutes": 280.6000000000000227373675443232059478759765625,
    "overlap_duration_s": 16838,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-12T22:02:12+00:00",
        "end": "2026-03-13T02:42:50+00:00"
    },
    "points_count": {
        "vessel_a": 69,
        "vessel_b": 69
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 298m, avg 309m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 281 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 298m, avg 309m) for 281 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 34.70917109999999894398570177145302295684814453125,
            "lon": 33.3212242999999972425939631648361682891845703125
        },
        "time_window": {
            "start_ts": "2026-03-12T22:02:12+00:00",
            "end_ts": "2026-03-13T02:42:50+00:00"
        },
        "searched_at": "2026-03-13T04:45:07.449326+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG",
        "scene_datetime": "2026-03-12T15:40:28.859639Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": 33.14670600000000177942638401873409748077392578125,
            "min_lat": 33.42395400000000194040694623254239559173583984375,
            "max_lon": 36.2533949999999975943865138106048107147216796875,
            "max_lat": 35.338222999999999274223227985203266143798828125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211508_thumbnail_20260313044512.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211508_thumbnail_20260313044512.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

Mar 12, 2026 22:01 UTC 80.0% ▼

Zone: Eastern Mediterranean Monitoring Zone
Duration: 6h 36m
Data Points: 151 AIS positions
Period: 2026-03-12T22:52:08+00:00 to 2026-03-13T05:28:06+00:00

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 396,
    "points_in_zone": 151,
    "first_point": {
        "ts": "2026-03-12T22:52:08+00:00",
        "lat": 34.7082266999999973222656990401446819305419921875,
        "lon": 33.31999669999999724723238614387810230255126953125
    },
    "last_point": {
        "ts": "2026-03-13T05:28:06+00:00",
        "lat": 34.470536699999996699261828325688838958740234375,
        "lon": 33.80461170000000237223503063432872295379638671875
    }
}

Mar 12, 2026 22:01 UTC 75.0% ▼

Duration: 4h 58m
Radius: 1,046 meters
Data Points: 83 AIS positions
Centroid: 34.7080, 33.3196
Zone: Eastern Mediterranean Monitoring Zone

{
    "radius_m": 1045.5,
    "duration_minutes": 298.80000000000001136868377216160297393798828125,
    "points": 83,
    "centroid": {
        "lat": 34.707991408433741753469803370535373687744140625,
        "lon": 33.319625483132540466613136231899261474609375
    },
    "bbox": {
        "min_lat": 34.7020432999999997036866261623799800872802734375,
        "min_lon": 33.31077330000000102927515399642288684844970703125,
        "max_lat": 34.70830169999999981200744514353573322296142578125,
        "max_lon": 33.32010170000000215395630220882594585418701171875
    },
    "zone_id": "discovered_037"
}

Mar 12, 2026 21:27 UTC 80/100 ▼

Vessel A: IMO 9723007 (ALDEBARAN) Bahamas

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 322 meters
Average Distance: 327 meters
Duration: 5h 6m
Period: 2026-03-12T21:27:58+00:00 to 2026-03-13T02:33:57+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 322m, avg 327m) for 306 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	10/25	Min distance 322m, avg 327m
Duration	25/25	Duration 306 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±4m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG • Acquired: 2026-03-12T15:40:28.859639Z • Platform: sentinel-1c

Click image to view full size

Searched: 2026-03-13T03:30:21.058319+00:00

{
    "vessel_a": {
        "mmsi": 311000232,
        "imo": 9723007,
        "name": "ALDEBARAN",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 321.5,
    "avg_distance_m": 327.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 4.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 306,
    "overlap_duration_s": 18359,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-03-12T21:27:58+00:00",
        "end": "2026-03-13T02:33:57+00:00"
    },
    "points_count": {
        "vessel_a": 24,
        "vessel_b": 24
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 322m, avg 327m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 306 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 322m, avg 327m) for 306 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 34.708948800000001710941432975232601165771484375,
            "lon": 33.3215416000000033136529964394867420196533203125
        },
        "time_window": {
            "start_ts": "2026-03-12T21:27:58+00:00",
            "end_ts": "2026-03-13T02:33:57+00:00"
        },
        "searched_at": "2026-03-13T03:30:21.058319+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG",
        "scene_datetime": "2026-03-12T15:40:28.859639Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": 33.14670600000000177942638401873409748077392578125,
            "min_lat": 33.42395400000000194040694623254239559173583984375,
            "max_lon": 36.2533949999999975943865138106048107147216796875,
            "max_lat": 35.338222999999999274223227985203266143798828125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211144_thumbnail_20260313033024.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211144_thumbnail_20260313033024.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

Mar 12, 2026 21:04 UTC 87/100 ▼

Vessel A: IMO 9800790 (HISTRIA ATLAS) Liberia

Vessel B: IMO 9259290 (ELKA DELOS) LIBERIA

Minimum Distance: 124 meters
Average Distance: 156 meters
Duration: 5h 49m
Period: 2026-03-12T21:04:08+00:00 to 2026-03-13T02:53:30+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.3 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 87/100

High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 124m, avg 156m) for 349 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	20/25	Min distance 124m, avg 156m
Duration	25/25	Duration 349 minutes
Speed Stability	17/20	both nearly stationary; stable speeds
Distance Consistency	15/15	Distance variance ±16m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG • Acquired: 2026-03-12T15:40:28.859639Z • Platform: sentinel-1c

Click image to view full size

Searched: 2026-03-13T04:00:10.966514+00:00

{
    "vessel_a": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636020277,
        "imo": 9259290,
        "name": "ELKA DELOS",
        "flag": "LIBERIA"
    },
    "min_distance_m": 123.7999999999999971578290569595992565155029296875,
    "avg_distance_m": 156.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 16.5,
    "duration_minutes": 349.3999999999999772626324556767940521240234375,
    "overlap_duration_s": 20962,
    "speed_a_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_a_std": 0.330000000000000015543122344752191565930843353271484375,
    "speed_b_avg": 0.270000000000000017763568394002504646778106689453125,
    "speed_b_std": 0.2099999999999999922284388276239042170345783233642578125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 2
        },
        "vessel_b": {
            "avg_sog": 0.270000000000000017763568394002504646778106689453125,
            "max_sog": 0.90000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-12T21:04:08+00:00",
        "end": "2026-03-13T02:53:30+00:00"
    },
    "points_count": {
        "vessel_a": 95,
        "vessel_b": 95
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 87,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 124m, avg 156m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 349 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b116m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 124m, avg 156m) for 349 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 34.707531299999999419014784507453441619873046875,
            "lon": 33.3196501999999981080691213719546794891357421875
        },
        "time_window": {
            "start_ts": "2026-03-12T21:04:08+00:00",
            "end_ts": "2026-03-13T02:53:30+00:00"
        },
        "searched_at": "2026-03-13T04:00:10.966514+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG",
        "scene_datetime": "2026-03-12T15:40:28.859639Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": 33.14670600000000177942638401873409748077392578125,
            "min_lat": 33.42395400000000194040694623254239559173583984375,
            "max_lon": 36.2533949999999975943865138106048107147216796875,
            "max_lat": 35.338222999999999274223227985203266143798828125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211321_thumbnail_20260313040014.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211321_thumbnail_20260313040014.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

Mar 12, 2026 21:02 UTC 85/100 ▼

Vessel A: IMO 9849382 (CLEAROCEAN MAGIC) Liberia

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 299 meters
Average Distance: 309 meters
Duration: 5h 40m
Period: 2026-03-12T21:02:12+00:00 to 2026-03-13T02:42:50+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 299m, avg 309m) for 341 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	15/25	Min distance 299m, avg 309m
Duration	25/25	Duration 341 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±4m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG • Acquired: 2026-03-12T15:40:28.859639Z • Platform: sentinel-1c

Click image to view full size

Searched: 2026-03-13T04:00:01.435912+00:00

{
    "vessel_a": {
        "mmsi": 636018900,
        "imo": 9849382,
        "name": "CLEAROCEAN MAGIC",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 299.30000000000001136868377216160297393798828125,
    "avg_distance_m": 309.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 3.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 340.6000000000000227373675443232059478759765625,
    "overlap_duration_s": 20438,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-12T21:02:12+00:00",
        "end": "2026-03-13T02:42:50+00:00"
    },
    "points_count": {
        "vessel_a": 84,
        "vessel_b": 84
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 299m, avg 309m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 341 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 299m, avg 309m) for 341 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 34.70917440000000198097040993161499500274658203125,
            "lon": 33.3212213999999988800482242368161678314208984375
        },
        "time_window": {
            "start_ts": "2026-03-12T21:02:12+00:00",
            "end_ts": "2026-03-13T02:42:50+00:00"
        },
        "searched_at": "2026-03-13T04:00:01.435912+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG",
        "scene_datetime": "2026-03-12T15:40:28.859639Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": 33.14670600000000177942638401873409748077392578125,
            "min_lat": 33.42395400000000194040694623254239559173583984375,
            "max_lon": 36.2533949999999975943865138106048107147216796875,
            "max_lat": 35.338222999999999274223227985203266143798828125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211319_thumbnail_20260313040005.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211319_thumbnail_20260313040005.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

Mar 12, 2026 21:01 UTC 80.0% ▼

Zone: Eastern Mediterranean Monitoring Zone
Duration: 6h 33m
Data Points: 151 AIS positions
Period: 2026-03-12T21:55:06+00:00 to 2026-03-13T04:28:08+00:00

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 393,
    "points_in_zone": 151,
    "first_point": {
        "ts": "2026-03-12T21:55:06+00:00",
        "lat": 34.70817000000000263071342487819492816925048828125,
        "lon": 33.320071699999999736974132247269153594970703125
    },
    "last_point": {
        "ts": "2026-03-13T04:28:08+00:00",
        "lat": 34.56117499999999864712663111276924610137939453125,
        "lon": 33.57497670000000056234057410620152950286865234375
    }
}

Mar 12, 2026 21:01 UTC 75.0% ▼

Duration: 5h 58m
Radius: 1,053 meters
Data Points: 99 AIS positions
Centroid: 34.7080, 33.3197
Zone: Eastern Mediterranean Monitoring Zone

{
    "radius_m": 1052.5,
    "duration_minutes": 358.80000000000001136868377216160297393798828125,
    "points": 99,
    "centroid": {
        "lat": 34.70802894343436406643377267755568027496337890625,
        "lon": 33.3196862292929409932185080833733081817626953125
    },
    "bbox": {
        "min_lat": 34.7020432999999997036866261623799800872802734375,
        "min_lon": 33.31077330000000102927515399642288684844970703125,
        "max_lat": 34.70830169999999981200744514353573322296142578125,
        "max_lon": 33.32010170000000215395630220882594585418701171875
    },
    "zone_id": "discovered_037"
}

Mar 12, 2026 20:04 UTC 87/100 ▼

Vessel A: IMO 9800790 (HISTRIA ATLAS) Liberia

Vessel B: IMO 9259290 (ELKA DELOS) LIBERIA

Minimum Distance: 124 meters
Average Distance: 156 meters
Duration: 6h 22m
Period: 2026-03-12T20:31:06+00:00 to 2026-03-13T02:53:30+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.3 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 87/100

High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 124m, avg 156m) for 382 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	20/25	Min distance 124m, avg 156m
Duration	25/25	Duration 382 minutes
Speed Stability	17/20	both nearly stationary; stable speeds
Distance Consistency	15/15	Distance variance ±16m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG • Acquired: 2026-03-12T15:40:28.859639Z • Platform: sentinel-1c

Click image to view full size

Searched: 2026-03-13T03:00:20.537358+00:00

{
    "vessel_a": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636020277,
        "imo": 9259290,
        "name": "ELKA DELOS",
        "flag": "LIBERIA"
    },
    "min_distance_m": 123.7999999999999971578290569595992565155029296875,
    "avg_distance_m": 156.099999999999994315658113919198513031005859375,
    "distance_consistency_m": 15.800000000000000710542735760100185871124267578125,
    "duration_minutes": 382.3999999999999772626324556767940521240234375,
    "overlap_duration_s": 22944,
    "speed_a_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_a_std": 0.320000000000000006661338147750939242541790008544921875,
    "speed_b_avg": 0.270000000000000017763568394002504646778106689453125,
    "speed_b_std": 0.200000000000000011102230246251565404236316680908203125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 2
        },
        "vessel_b": {
            "avg_sog": 0.270000000000000017763568394002504646778106689453125,
            "max_sog": 0.90000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-12T20:31:06+00:00",
        "end": "2026-03-13T02:53:30+00:00"
    },
    "points_count": {
        "vessel_a": 104,
        "vessel_b": 104
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 87,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 124m, avg 156m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 382 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b116m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 124m, avg 156m) for 382 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 34.7075561999999990803189575672149658203125,
            "lon": 33.31970609999999766159817227162420749664306640625
        },
        "time_window": {
            "start_ts": "2026-03-12T20:04:06+00:00",
            "end_ts": "2026-03-13T02:53:30+00:00"
        },
        "searched_at": "2026-03-13T03:00:20.537358+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG",
        "scene_datetime": "2026-03-12T15:40:28.859639Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": 33.14670600000000177942638401873409748077392578125,
            "min_lat": 33.42395400000000194040694623254239559173583984375,
            "max_lon": 36.2533949999999975943865138106048107147216796875,
            "max_lat": 35.338222999999999274223227985203266143798828125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211127_thumbnail_20260313030023.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211127_thumbnail_20260313030023.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 20:03 UTC 80/100 ▼

Vessel A: IMO 9723007 (ALDEBARAN) Bahamas

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 322 meters
Average Distance: 327 meters
Duration: 6h 30m
Period: 2026-03-12T20:03:56+00:00 to 2026-03-13T02:33:57+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 322m, avg 327m) for 390 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	10/25	Min distance 322m, avg 327m
Duration	25/25	Duration 390 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±4m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 311000232,
        "imo": 9723007,
        "name": "ALDEBARAN",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 321.5,
    "avg_distance_m": 327.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 4.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 390,
    "overlap_duration_s": 23401,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-03-12T20:03:56+00:00",
        "end": "2026-03-13T02:33:57+00:00"
    },
    "points_count": {
        "vessel_a": 25,
        "vessel_b": 25
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 322m, avg 327m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 322m, avg 327m) for 390 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts🛰️? Eastern Mediterranean Monitoring Zone

Mar 12, 2026 20:02 UTC 85/100 ▼

Vessel A: IMO 9849382 (CLEAROCEAN MAGIC) Liberia

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 300 meters
Average Distance: 311 meters
Duration: 6h 34m
Period: 2026-03-12T20:14:12+00:00 to 2026-03-13T02:48:50+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 300m, avg 310m) for 395 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	15/25	Min distance 300m, avg 310m
Duration	25/25	Duration 395 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±13m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG • Acquired: 2026-03-12T15:40:28.859639Z • Platform: sentinel-1c

Click image to view full size

Searched: 2026-03-13T03:00:11.729908+00:00

{
    "vessel_a": {
        "mmsi": 636018900,
        "imo": 9849382,
        "name": "CLEAROCEAN MAGIC",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 299.80000000000001136868377216160297393798828125,
    "avg_distance_m": 310.5,
    "distance_consistency_m": 12.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 394.6000000000000227373675443232059478759765625,
    "overlap_duration_s": 23678,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 1.5
        }
    },
    "time_window": {
        "start": "2026-03-12T20:14:12+00:00",
        "end": "2026-03-13T02:48:50+00:00"
    },
    "points_count": {
        "vessel_a": 98,
        "vessel_b": 98
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 300m, avg 310m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 395 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b113m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 300m, avg 310m) for 395 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 34.7091755000000006248228601180016994476318359375,
            "lon": 33.3212228000000010297299013473093509674072265625
        },
        "time_window": {
            "start_ts": "2026-03-12T20:02:12+00:00",
            "end_ts": "2026-03-13T02:48:50+00:00"
        },
        "searched_at": "2026-03-13T03:00:11.729908+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260312T154028_20260312T154053_006733_00D993_C587_COG",
        "scene_datetime": "2026-03-12T15:40:28.859639Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": 33.14670600000000177942638401873409748077392578125,
            "min_lat": 33.42395400000000194040694623254239559173583984375,
            "max_lon": 36.2533949999999975943865138106048107147216796875,
            "max_lat": 35.338222999999999274223227985203266143798828125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211125_thumbnail_20260313030015.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_211125_thumbnail_20260313030015.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

Mar 12, 2026 20:01 UTC 80.0% ▼

Zone: Eastern Mediterranean Monitoring Zone
Duration: 6h 34m
Data Points: 121 AIS positions
Period: 2026-03-12T20:55:06+00:00 to 2026-03-13T03:29:20+00:00

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 394.19999999999998863131622783839702606201171875,
    "points_in_zone": 121,
    "first_point": {
        "ts": "2026-03-12T20:55:06+00:00",
        "lat": 34.70820169999999649235178367234766483306884765625,
        "lon": 33.32004169999999731999196228571236133575439453125
    },
    "last_point": {
        "ts": "2026-03-13T03:29:20+00:00",
        "lat": 34.65718170000000242225723923183977603912353515625,
        "lon": 33.3595983000000018137143342755734920501708984375
    }
}

Mar 12, 2026 20:01 UTC 75.0% ▼

Duration: 6h 28m
Radius: 1,055 meters
Data Points: 107 AIS positions
Centroid: 34.7080, 33.3197
Zone: Eastern Mediterranean Monitoring Zone

{
    "radius_m": 1055.299999999999954525264911353588104248046875,
    "duration_minutes": 388.80000000000001136868377216160297393798828125,
    "points": 107,
    "centroid": {
        "lat": 34.7080426364486100965223158709704875946044921875,
        "lon": 33.31971260280374025342098320834338665008544921875
    },
    "bbox": {
        "min_lat": 34.7020432999999997036866261623799800872802734375,
        "min_lon": 33.31077330000000102927515399642288684844970703125,
        "max_lat": 34.70830169999999981200744514353573322296142578125,
        "max_lon": 33.32010170000000215395630220882594585418701171875
    },
    "zone_id": "discovered_037"
}

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 19:51 UTC 80/100 ▼

Vessel A: IMO 9723007 (ALDEBARAN) Bahamas

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 322 meters
Average Distance: 328 meters
Duration: 6h 24m
Period: 2026-03-12T19:51:56+00:00 to 2026-03-13T02:15:58+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 322m, avg 328m) for 384 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	10/25	Min distance 322m, avg 328m
Duration	25/25	Duration 384 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±4m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 311000232,
        "imo": 9723007,
        "name": "ALDEBARAN",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 321.5,
    "avg_distance_m": 327.5,
    "distance_consistency_m": 4.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 384,
    "overlap_duration_s": 23042,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-03-12T19:51:56+00:00",
        "end": "2026-03-13T02:15:58+00:00"
    },
    "points_count": {
        "vessel_a": 25,
        "vessel_b": 25
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 322m, avg 328m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 384 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 322m, avg 328m) for 384 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 19:11 UTC 85/100 ▼

Vessel A: IMO 9849382 (CLEAROCEAN MAGIC) Liberia

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 300 meters
Average Distance: 309 meters
Duration: 6h 28m
Period: 2026-03-12T19:56:12+00:00 to 2026-03-13T02:24:53+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 300m, avg 309m) for 389 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	15/25	Min distance 300m, avg 309m
Duration	25/25	Duration 389 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±4m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636018900,
        "imo": 9849382,
        "name": "CLEAROCEAN MAGIC",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 299.80000000000001136868377216160297393798828125,
    "avg_distance_m": 309.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 3.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 388.69999999999998863131622783839702606201171875,
    "overlap_duration_s": 23321,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-03-12T19:56:12+00:00",
        "end": "2026-03-13T02:24:53+00:00"
    },
    "points_count": {
        "vessel_a": 97,
        "vessel_b": 97
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 300m, avg 309m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 389 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 300m, avg 309m) for 389 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Eastern Mediterranean Monitoring Zone

Mar 12, 2026 19:10 UTC 80.0% ▼

Zone: Eastern Mediterranean Monitoring Zone
Duration: 6h 33m
Data Points: 103 AIS positions
Period: 2026-03-12T19:52:07+00:00 to 2026-03-13T02:25:07+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 393,
    "points_in_zone": 103,
    "first_point": {
        "ts": "2026-03-12T19:52:07+00:00",
        "lat": 34.70819329999999780511643621139228343963623046875,
        "lon": 33.3199800000000010413714335300028324127197265625
    },
    "last_point": {
        "ts": "2026-03-13T02:25:07+00:00",
        "lat": 34.70816169999999800666046212427318096160888671875,
        "lon": 33.3200082999999978028426994569599628448486328125
    }
}

Methodology: 2026.01.18

Loiter Eastern Mediterranean Monitoring Zone

Mar 12, 2026 19:10 UTC 75.0% ▼

Duration: 6h 33m
Radius: 13 meters
Data Points: 103 AIS positions
Centroid: 34.7082, 33.3200
Zone: Eastern Mediterranean Monitoring Zone

Show Raw Evidence JSON

{
    "radius_m": 12.699999999999999289457264239899814128875732421875,
    "duration_minutes": 393,
    "points": 103,
    "centroid": {
        "lat": 34.7082039174757284172301297076046466827392578125,
        "lon": 33.3200135300970856633284711278975009918212890625
    },
    "bbox": {
        "min_lat": 34.7081333000000000765794538892805576324462890625,
        "min_lon": 33.31989329999999682740963180549442768096923828125,
        "max_lat": 34.70830169999999981200744514353573322296142578125,
        "max_lon": 33.32010170000000215395630220882594585418701171875
    },
    "zone_id": "discovered_037"
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 19:10 UTC 90/100 ▼

Vessel A: IMO 9800790 (HISTRIA ATLAS) Liberia

Vessel B: IMO 9259290 (ELKA DELOS) LIBERIA

Minimum Distance: 147 meters
Average Distance: 154 meters
Duration: 6h 27m
Period: 2026-03-12T19:58:07+00:00 to 2026-03-13T02:25:07+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.3 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 146m, avg 154m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	20/25	Min distance 146m, avg 154m
Duration	25/25	Duration 387 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±4m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636020277,
        "imo": 9259290,
        "name": "ELKA DELOS",
        "flag": "LIBERIA"
    },
    "min_distance_m": 146.5,
    "avg_distance_m": 154.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 3.5,
    "duration_minutes": 387,
    "overlap_duration_s": 23220,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.270000000000000017763568394002504646778106689453125,
    "speed_b_std": 0.190000000000000002220446049250313080847263336181640625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.270000000000000017763568394002504646778106689453125,
            "max_sog": 0.90000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-12T19:58:07+00:00",
        "end": "2026-03-13T02:25:07+00:00"
    },
    "points_count": {
        "vessel_a": 102,
        "vessel_b": 102
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 146m, avg 154m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 146m, avg 154m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 18:04 UTC 90/100 ▼

Vessel A: IMO 9800790 (HISTRIA ATLAS) Liberia

Vessel B: IMO 9259290 (ELKA DELOS) LIBERIA

Minimum Distance: 147 meters
Average Distance: 155 meters
Duration: 6h 27m
Period: 2026-03-12T18:58:06+00:00 to 2026-03-13T01:25:10+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.3 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 146m, avg 155m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	20/25	Min distance 146m, avg 155m
Duration	25/25	Duration 387 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±3m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636020277,
        "imo": 9259290,
        "name": "ELKA DELOS",
        "flag": "LIBERIA"
    },
    "min_distance_m": 146.5,
    "avg_distance_m": 154.900000000000005684341886080801486968994140625,
    "distance_consistency_m": 3.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 387.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 23224,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.2600000000000000088817841970012523233890533447265625,
    "speed_b_std": 0.179999999999999993338661852249060757458209991455078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.2600000000000000088817841970012523233890533447265625,
            "max_sog": 0.90000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-12T18:58:06+00:00",
        "end": "2026-03-13T01:25:10+00:00"
    },
    "points_count": {
        "vessel_a": 98,
        "vessel_b": 98
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 146m, avg 155m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 146m, avg 155m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 18:02 UTC 85/100 ▼

Vessel A: IMO 9849382 (CLEAROCEAN MAGIC) Liberia

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 300 meters
Average Distance: 309 meters
Duration: 6h 26m
Period: 2026-03-12T18:59:16+00:00 to 2026-03-13T01:26:12+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 300m, avg 309m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	15/25	Min distance 300m, avg 309m
Duration	25/25	Duration 387 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±4m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636018900,
        "imo": 9849382,
        "name": "CLEAROCEAN MAGIC",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 299.80000000000001136868377216160297393798828125,
    "avg_distance_m": 309.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 3.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 386.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 23216,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-03-12T18:59:16+00:00",
        "end": "2026-03-13T01:26:12+00:00"
    },
    "points_count": {
        "vessel_a": 94,
        "vessel_b": 94
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 300m, avg 309m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 300m, avg 309m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Eastern Mediterranean Monitoring Zone

Mar 12, 2026 18:01 UTC 80.0% ▼

Zone: Eastern Mediterranean Monitoring Zone
Duration: 6h 30m
Data Points: 99 AIS positions
Period: 2026-03-12T18:58:06+00:00 to 2026-03-13T01:28:06+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 99,
    "first_point": {
        "ts": "2026-03-12T18:58:06+00:00",
        "lat": 34.70823829999999787787601235322654247283935546875,
        "lon": 33.319978300000002491287887096405029296875
    },
    "last_point": {
        "ts": "2026-03-13T01:28:06+00:00",
        "lat": 34.708183300000001736407284624874591827392578125,
        "lon": 33.32000169999999883430064073763787746429443359375
    }
}

Methodology: 2026.01.18

Loiter Eastern Mediterranean Monitoring Zone

Mar 12, 2026 18:01 UTC 75.0% ▼

Duration: 6h 30m
Radius: 12 meters
Data Points: 99 AIS positions
Centroid: 34.7082, 33.3200
Zone: Eastern Mediterranean Monitoring Zone

Show Raw Evidence JSON

{
    "radius_m": 12.0999999999999996447286321199499070644378662109375,
    "duration_minutes": 390,
    "points": 99,
    "centroid": {
        "lat": 34.70821166767677112829915131442248821258544921875,
        "lon": 33.32001170202020290389555157162249088287353515625
    },
    "bbox": {
        "min_lat": 34.7081333000000000765794538892805576324462890625,
        "min_lon": 33.31989329999999682740963180549442768096923828125,
        "max_lat": 34.70830169999999981200744514353573322296142578125,
        "max_lon": 33.32010170000000215395630220882594585418701171875
    },
    "zone_id": "discovered_037"
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 17:36 UTC 80/100 ▼

Vessel A: IMO 9723007 (ALDEBARAN) Bahamas

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 314 meters
Average Distance: 326 meters
Duration: 6h 27m
Period: 2026-03-12T17:36:56+00:00 to 2026-03-13T00:03:56+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 314m, avg 326m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	10/25	Min distance 314m, avg 326m
Duration	25/25	Duration 387 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±6m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 311000232,
        "imo": 9723007,
        "name": "ALDEBARAN",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 314.1000000000000227373675443232059478759765625,
    "avg_distance_m": 326.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 6,
    "duration_minutes": 387,
    "overlap_duration_s": 23220,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-03-12T17:36:56+00:00",
        "end": "2026-03-13T00:03:56+00:00"
    },
    "points_count": {
        "vessel_a": 16,
        "vessel_b": 16
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 314m, avg 326m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b16m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 314m, avg 326m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 17:17 UTC 85/100 ▼

Vessel A: IMO 9849382 (CLEAROCEAN MAGIC) Liberia

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 300 meters
Average Distance: 309 meters
Duration: 6h 30m
Period: 2026-03-12T17:56:12+00:00 to 2026-03-13T00:26:16+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 300m, avg 309m) for 390 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	15/25	Min distance 300m, avg 309m
Duration	25/25	Duration 390 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±3m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636018900,
        "imo": 9849382,
        "name": "CLEAROCEAN MAGIC",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 299.80000000000001136868377216160297393798828125,
    "avg_distance_m": 309.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 3.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 390.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 23404,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-03-12T17:56:12+00:00",
        "end": "2026-03-13T00:26:16+00:00"
    },
    "points_count": {
        "vessel_a": 84,
        "vessel_b": 84
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 300m, avg 309m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 300m, avg 309m) for 390 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 17:16 UTC 90/100 ▼

Vessel A: IMO 9800790 (HISTRIA ATLAS) Liberia

Vessel B: IMO 9259290 (ELKA DELOS) LIBERIA

Minimum Distance: 147 meters
Average Distance: 155 meters
Duration: 6h 24m
Period: 2026-03-12T17:58:06+00:00 to 2026-03-13T00:22:06+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.3 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 146m, avg 155m) for 384 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	20/25	Min distance 146m, avg 155m
Duration	25/25	Duration 384 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±3m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636020277,
        "imo": 9259290,
        "name": "ELKA DELOS",
        "flag": "LIBERIA"
    },
    "min_distance_m": 146.5,
    "avg_distance_m": 155.099999999999994315658113919198513031005859375,
    "distance_consistency_m": 3.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 384,
    "overlap_duration_s": 23040,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.2600000000000000088817841970012523233890533447265625,
    "speed_b_std": 0.190000000000000002220446049250313080847263336181640625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.2600000000000000088817841970012523233890533447265625,
            "max_sog": 0.90000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-12T17:58:06+00:00",
        "end": "2026-03-13T00:22:06+00:00"
    },
    "points_count": {
        "vessel_a": 87,
        "vessel_b": 87
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 146m, avg 155m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 384 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 146m, avg 155m) for 384 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Eastern Mediterranean Monitoring Zone

Mar 12, 2026 17:16 UTC 80.0% ▼

Zone: Eastern Mediterranean Monitoring Zone
Duration: 6h 36m
Data Points: 90 AIS positions
Period: 2026-03-12T17:52:06+00:00 to 2026-03-13T00:28:06+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 396,
    "points_in_zone": 90,
    "first_point": {
        "ts": "2026-03-12T17:52:06+00:00",
        "lat": 34.7081682999999969752025208435952663421630859375,
        "lon": 33.32006830000000263680703938007354736328125
    },
    "last_point": {
        "ts": "2026-03-13T00:28:06+00:00",
        "lat": 34.70818669999999883657437749207019805908203125,
        "lon": 33.3200317000000012512828106991946697235107421875
    }
}

Methodology: 2026.01.18

Loiter Eastern Mediterranean Monitoring Zone

Mar 12, 2026 17:16 UTC 75.0% ▼

Duration: 6h 36m
Radius: 12 meters
Data Points: 90 AIS positions
Centroid: 34.7082, 33.3200
Zone: Eastern Mediterranean Monitoring Zone

Show Raw Evidence JSON

{
    "radius_m": 12.199999999999999289457264239899814128875732421875,
    "duration_minutes": 396,
    "points": 90,
    "centroid": {
        "lat": 34.70821213111110381532853352837264537811279296875,
        "lon": 33.3200133533333513469187892042100429534912109375
    },
    "bbox": {
        "min_lat": 34.7081333000000000765794538892805576324462890625,
        "min_lon": 33.31989329999999682740963180549442768096923828125,
        "max_lat": 34.70830169999999981200744514353573322296142578125,
        "max_lon": 33.32010170000000215395630220882594585418701171875
    },
    "zone_id": "discovered_037"
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 16:51 UTC 80/100 ▼

Vessel A: IMO 9723007 (ALDEBARAN) Bahamas

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 314 meters
Average Distance: 326 meters
Duration: 6h 18m
Period: 2026-03-12T16:51:56+00:00 to 2026-03-12T23:09:56+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 314m, avg 326m) for 378 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	10/25	Min distance 314m, avg 326m
Duration	25/25	Duration 378 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±7m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 311000232,
        "imo": 9723007,
        "name": "ALDEBARAN",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 314.1000000000000227373675443232059478759765625,
    "avg_distance_m": 326.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 6.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 378,
    "overlap_duration_s": 22680,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-03-12T16:51:56+00:00",
        "end": "2026-03-12T23:09:56+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 314m, avg 326m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 378 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b17m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 314m, avg 326m) for 378 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 16:02 UTC 85/100 ▼

Vessel A: IMO 9849382 (CLEAROCEAN MAGIC) Liberia

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 299 meters
Average Distance: 309 meters
Duration: 6h 29m
Period: 2026-03-12T16:56:14+00:00 to 2026-03-12T23:26:11+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 299m, avg 309m) for 390 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	15/25	Min distance 299m, avg 309m
Duration	25/25	Duration 390 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±4m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636018900,
        "imo": 9849382,
        "name": "CLEAROCEAN MAGIC",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 299.19999999999998863131622783839702606201171875,
    "avg_distance_m": 308.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 3.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 389.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 23397,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-03-12T16:56:14+00:00",
        "end": "2026-03-12T23:26:11+00:00"
    },
    "points_count": {
        "vessel_a": 82,
        "vessel_b": 82
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 299m, avg 309m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 299m, avg 309m) for 390 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 16:01 UTC 90/100 ▼

Vessel A: IMO 9800790 (HISTRIA ATLAS) Liberia

Vessel B: IMO 9259290 (ELKA DELOS) LIBERIA

Minimum Distance: 147 meters
Average Distance: 155 meters
Duration: 6h 33m
Period: 2026-03-12T16:43:07+00:00 to 2026-03-12T23:16:09+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.2 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 146m, avg 155m) for 393 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	20/25	Min distance 146m, avg 155m
Duration	25/25	Duration 393 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±4m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636020277,
        "imo": 9259290,
        "name": "ELKA DELOS",
        "flag": "LIBERIA"
    },
    "min_distance_m": 146.5,
    "avg_distance_m": 155.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 3.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 393,
    "overlap_duration_s": 23582,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.2099999999999999922284388276239042170345783233642578125,
    "speed_b_std": 0.179999999999999993338661852249060757458209991455078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.2099999999999999922284388276239042170345783233642578125,
            "max_sog": 0.90000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-12T16:43:07+00:00",
        "end": "2026-03-12T23:16:09+00:00"
    },
    "points_count": {
        "vessel_a": 84,
        "vessel_b": 84
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 146m, avg 155m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 393 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 146m, avg 155m) for 393 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Eastern Mediterranean Monitoring Zone

Mar 12, 2026 16:01 UTC 80.0% ▼

Zone: Eastern Mediterranean Monitoring Zone
Duration: 6h 36m
Data Points: 85 AIS positions
Period: 2026-03-12T16:52:08+00:00 to 2026-03-12T23:28:07+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 396,
    "points_in_zone": 85,
    "first_point": {
        "ts": "2026-03-12T16:52:08+00:00",
        "lat": 34.7081917000000004236426320858299732208251953125,
        "lon": 33.3200666999999981499058776535093784332275390625
    },
    "last_point": {
        "ts": "2026-03-12T23:28:07+00:00",
        "lat": 34.7082716999999973950252751819789409637451171875,
        "lon": 33.31996170000000034860931918956339359283447265625
    }
}

Methodology: 2026.01.18

Loiter Eastern Mediterranean Monitoring Zone

Mar 12, 2026 16:01 UTC 75.0% ▼

Duration: 6h 36m
Radius: 13 meters
Data Points: 85 AIS positions
Centroid: 34.7082, 33.3200
Zone: Eastern Mediterranean Monitoring Zone

Show Raw Evidence JSON

{
    "radius_m": 12.699999999999999289457264239899814128875732421875,
    "duration_minutes": 396,
    "points": 85,
    "centroid": {
        "lat": 34.70821184470588605108787305653095245361328125,
        "lon": 33.3200185517647327060331008397042751312255859375
    },
    "bbox": {
        "min_lat": 34.7081333000000000765794538892805576324462890625,
        "min_lon": 33.31989329999999682740963180549442768096923828125,
        "max_lat": 34.70830169999999981200744514353573322296142578125,
        "max_lon": 33.32010170000000215395630220882594585418701171875
    },
    "zone_id": "discovered_037"
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 15:02 UTC 85/100 ▼

Vessel A: IMO 9849382 (CLEAROCEAN MAGIC) Liberia

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 298 meters
Average Distance: 308 meters
Duration: 6h 27m
Period: 2026-03-12T15:59:11+00:00 to 2026-03-12T22:26:13+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 298m, avg 308m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	15/25	Min distance 298m, avg 308m
Duration	25/25	Duration 387 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±4m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636018900,
        "imo": 9849382,
        "name": "CLEAROCEAN MAGIC",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 297.69999999999998863131622783839702606201171875,
    "avg_distance_m": 307.5,
    "distance_consistency_m": 4.5,
    "duration_minutes": 387,
    "overlap_duration_s": 23222,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-03-12T15:59:11+00:00",
        "end": "2026-03-12T22:26:13+00:00"
    },
    "points_count": {
        "vessel_a": 79,
        "vessel_b": 79
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 298m, avg 308m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 298m, avg 308m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 15:01 UTC 90/100 ▼

Vessel A: IMO 9800790 (HISTRIA ATLAS) Liberia

Vessel B: IMO 9259290 (ELKA DELOS) LIBERIA

Minimum Distance: 147 meters
Average Distance: 157 meters
Duration: 6h 15m
Period: 2026-03-12T15:58:06+00:00 to 2026-03-12T22:13:06+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.2 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 146m, avg 156m) for 375 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	20/25	Min distance 146m, avg 156m
Duration	25/25	Duration 375 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±4m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636020277,
        "imo": 9259290,
        "name": "ELKA DELOS",
        "flag": "LIBERIA"
    },
    "min_distance_m": 146.5,
    "avg_distance_m": 156.5,
    "distance_consistency_m": 4.5,
    "duration_minutes": 375,
    "overlap_duration_s": 22500,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.2099999999999999922284388276239042170345783233642578125,
    "speed_b_std": 0.179999999999999993338661852249060757458209991455078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.2099999999999999922284388276239042170345783233642578125,
            "max_sog": 0.90000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-12T15:58:06+00:00",
        "end": "2026-03-12T22:13:06+00:00"
    },
    "points_count": {
        "vessel_a": 78,
        "vessel_b": 78
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 146m, avg 156m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 375 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 146m, avg 156m) for 375 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Eastern Mediterranean Monitoring Zone

Mar 12, 2026 15:01 UTC 80.0% ▼

Zone: Eastern Mediterranean Monitoring Zone
Duration: 6h 30m
Data Points: 82 AIS positions
Period: 2026-03-12T15:58:06+00:00 to 2026-03-12T22:28:06+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 82,
    "first_point": {
        "ts": "2026-03-12T15:58:06+00:00",
        "lat": 34.70821169999999966648829285986721515655517578125,
        "lon": 33.32004830000000339396137860603630542755126953125
    },
    "last_point": {
        "ts": "2026-03-12T22:28:06+00:00",
        "lat": 34.70817329999999856227077543735504150390625,
        "lon": 33.32003499999999718284016125835478305816650390625
    }
}

Methodology: 2026.01.18

Loiter Eastern Mediterranean Monitoring Zone

Mar 12, 2026 15:01 UTC 75.0% ▼

Duration: 6h 30m
Radius: 13 meters
Data Points: 82 AIS positions
Centroid: 34.7082, 33.3200
Zone: Eastern Mediterranean Monitoring Zone

Show Raw Evidence JSON

{
    "radius_m": 12.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 390,
    "points": 82,
    "centroid": {
        "lat": 34.7082260987804858132221852429211139678955078125,
        "lon": 33.3200201207317121543383109383285045623779296875
    },
    "bbox": {
        "min_lat": 34.7081333000000000765794538892805576324462890625,
        "min_lon": 33.31989329999999682740963180549442768096923828125,
        "max_lat": 34.70833830000000119753167382441461086273193359375,
        "max_lon": 33.32010170000000215395630220882594585418701171875
    },
    "zone_id": "discovered_037"
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 14:08 UTC 85/100 ▼

Vessel A: IMO 9849382 (CLEAROCEAN MAGIC) Liberia

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 295 meters
Average Distance: 307 meters
Duration: 6h 30m
Period: 2026-03-12T14:56:11+00:00 to 2026-03-12T21:26:11+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 295m, avg 307m) for 390 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	15/25	Min distance 295m, avg 307m
Duration	25/25	Duration 390 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±4m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636018900,
        "imo": 9849382,
        "name": "CLEAROCEAN MAGIC",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 295,
    "avg_distance_m": 306.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 4.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 390,
    "overlap_duration_s": 23400,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-12T14:56:11+00:00",
        "end": "2026-03-12T21:26:11+00:00"
    },
    "points_count": {
        "vessel_a": 78,
        "vessel_b": 78
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 295m, avg 307m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 295m, avg 307m) for 390 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 14:04 UTC 90/100 ▼

Vessel A: IMO 9800790 (HISTRIA ATLAS) Liberia

Vessel B: IMO 9259290 (ELKA DELOS) LIBERIA

Minimum Distance: 147 meters
Average Distance: 157 meters
Duration: 6h 33m
Period: 2026-03-12T14:43:06+00:00 to 2026-03-12T21:16:06+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.2 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 146m, avg 157m) for 393 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	20/25	Min distance 146m, avg 157m
Duration	25/25	Duration 393 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±5m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636020277,
        "imo": 9259290,
        "name": "ELKA DELOS",
        "flag": "LIBERIA"
    },
    "min_distance_m": 146.5,
    "avg_distance_m": 156.900000000000005684341886080801486968994140625,
    "distance_consistency_m": 4.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 393,
    "overlap_duration_s": 23580,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.2200000000000000011102230246251565404236316680908203125,
    "speed_b_std": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.2200000000000000011102230246251565404236316680908203125,
            "max_sog": 0.90000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-12T14:43:06+00:00",
        "end": "2026-03-12T21:16:06+00:00"
    },
    "points_count": {
        "vessel_a": 79,
        "vessel_b": 79
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 146m, avg 157m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 393 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 146m, avg 157m) for 393 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 14:03 UTC 80/100 ▼

Vessel A: IMO 9723007 (ALDEBARAN) Bahamas

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 314 meters
Average Distance: 325 meters
Duration: 6 hours
Period: 2026-03-12T14:03:55+00:00 to 2026-03-12T20:03:56+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 314m, avg 324m) for 360 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	10/25	Min distance 314m, avg 324m
Duration	25/25	Duration 360 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±6m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 311000232,
        "imo": 9723007,
        "name": "ALDEBARAN",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 314.1000000000000227373675443232059478759765625,
    "avg_distance_m": 324.5,
    "distance_consistency_m": 6.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 360,
    "overlap_duration_s": 21601,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-12T14:03:55+00:00",
        "end": "2026-03-12T20:03:56+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 314m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 360 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b16m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 314m, avg 324m) for 360 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Eastern Mediterranean Monitoring Zone

Mar 12, 2026 14:01 UTC 80.0% ▼

Zone: Eastern Mediterranean Monitoring Zone
Duration: 6h 33m
Data Points: 79 AIS positions
Period: 2026-03-12T14:55:07+00:00 to 2026-03-12T21:28:10+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 393.1000000000000227373675443232059478759765625,
    "points_in_zone": 79,
    "first_point": {
        "ts": "2026-03-12T14:55:07+00:00",
        "lat": 34.70821500000000270347300102002918720245361328125,
        "lon": 33.320026699999999664214556105434894561767578125
    },
    "last_point": {
        "ts": "2026-03-12T21:28:10+00:00",
        "lat": 34.708241700000002083470462821424007415771484375,
        "lon": 33.319923299999999244391801767051219940185546875
    }
}

Methodology: 2026.01.18

Loiter Eastern Mediterranean Monitoring Zone

Mar 12, 2026 14:01 UTC 75.0% ▼

Duration: 6h 33m
Radius: 12 meters
Data Points: 79 AIS positions
Centroid: 34.7082, 33.3200
Zone: Eastern Mediterranean Monitoring Zone

Show Raw Evidence JSON

{
    "radius_m": 12,
    "duration_minutes": 393.1000000000000227373675443232059478759765625,
    "points": 79,
    "centroid": {
        "lat": 34.70823221772152322728288709186017513275146484375,
        "lon": 33.32002620126581149406774784438312053680419921875
    },
    "bbox": {
        "min_lat": 34.7081333000000000765794538892805576324462890625,
        "min_lon": 33.319923299999999244391801767051219940185546875,
        "max_lat": 34.70833830000000119753167382441461086273193359375,
        "max_lon": 33.32007999999999725559973740018904209136962890625
    },
    "zone_id": "discovered_037"
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 13:07 UTC 90/100 ▼

Vessel A: IMO 9800790 (HISTRIA ATLAS) Liberia

Vessel B: IMO 9259290 (ELKA DELOS) LIBERIA

Minimum Distance: 147 meters
Average Distance: 158 meters
Duration: 6h 30m
Period: 2026-03-12T13:55:07+00:00 to 2026-03-12T20:25:09+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.2 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 146m, avg 158m) for 390 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	20/25	Min distance 146m, avg 158m
Duration	25/25	Duration 390 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±5m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636020277,
        "imo": 9259290,
        "name": "ELKA DELOS",
        "flag": "LIBERIA"
    },
    "min_distance_m": 146.5,
    "avg_distance_m": 157.5,
    "distance_consistency_m": 4.9000000000000003552713678800500929355621337890625,
    "duration_minutes": 390,
    "overlap_duration_s": 23402,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.2099999999999999922284388276239042170345783233642578125,
    "speed_b_std": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.2099999999999999922284388276239042170345783233642578125,
            "max_sog": 0.90000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-12T13:55:07+00:00",
        "end": "2026-03-12T20:25:09+00:00"
    },
    "points_count": {
        "vessel_a": 80,
        "vessel_b": 80
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 146m, avg 158m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 146m, avg 158m) for 390 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 13:05 UTC 85/100 ▼

Vessel A: IMO 9849382 (CLEAROCEAN MAGIC) Liberia

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 295 meters
Average Distance: 307 meters
Duration: 6h 26m
Period: 2026-03-12T13:53:16+00:00 to 2026-03-12T20:20:12+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 295m, avg 307m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	15/25	Min distance 295m, avg 307m
Duration	25/25	Duration 387 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±4m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636018900,
        "imo": 9849382,
        "name": "CLEAROCEAN MAGIC",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 295,
    "avg_distance_m": 306.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 4.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 386.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 23216,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-12T13:53:16+00:00",
        "end": "2026-03-12T20:20:12+00:00"
    },
    "points_count": {
        "vessel_a": 78,
        "vessel_b": 78
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 295m, avg 307m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 295m, avg 307m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Eastern Mediterranean Monitoring Zone

Mar 12, 2026 13:04 UTC 80.0% ▼

Zone: Eastern Mediterranean Monitoring Zone
Duration: 6h 33m
Data Points: 81 AIS positions
Period: 2026-03-12T13:52:06+00:00 to 2026-03-12T20:25:09+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 393.1000000000000227373675443232059478759765625,
    "points_in_zone": 81,
    "first_point": {
        "ts": "2026-03-12T13:52:06+00:00",
        "lat": 34.7082400000000035333869163878262042999267578125,
        "lon": 33.3200183000000009769792086444795131683349609375
    },
    "last_point": {
        "ts": "2026-03-12T20:25:09+00:00",
        "lat": 34.70817329999999856227077543735504150390625,
        "lon": 33.32003999999999876990841585211455821990966796875
    }
}

Methodology: 2026.01.18

Loiter Eastern Mediterranean Monitoring Zone

Mar 12, 2026 13:04 UTC 75.0% ▼

Duration: 6h 33m
Radius: 13 meters
Data Points: 81 AIS positions
Centroid: 34.7082, 33.3200
Zone: Eastern Mediterranean Monitoring Zone

Show Raw Evidence JSON

{
    "radius_m": 12.800000000000000710542735760100185871124267578125,
    "duration_minutes": 393.1000000000000227373675443232059478759765625,
    "points": 81,
    "centroid": {
        "lat": 34.708241133333331163157708942890167236328125,
        "lon": 33.32002010000001490652721258811652660369873046875
    },
    "bbox": {
        "min_lat": 34.7081333000000000765794538892805576324462890625,
        "min_lon": 33.31994329999999848723746254108846187591552734375,
        "max_lat": 34.70833830000000119753167382441461086273193359375,
        "max_lon": 33.32007999999999725559973740018904209136962890625
    },
    "zone_id": "discovered_037"
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 12:04 UTC 90/100 ▼

Vessel A: IMO 9800790 (HISTRIA ATLAS) Liberia

Vessel B: IMO 9259290 (ELKA DELOS) LIBERIA

Minimum Distance: 148 meters
Average Distance: 158 meters
Duration: 6h 27m
Period: 2026-03-12T12:55:10+00:00 to 2026-03-12T19:22:11+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.2 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 148m, avg 158m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	20/25	Min distance 148m, avg 158m
Duration	25/25	Duration 387 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±5m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636020277,
        "imo": 9259290,
        "name": "ELKA DELOS",
        "flag": "LIBERIA"
    },
    "min_distance_m": 148.30000000000001136868377216160297393798828125,
    "avg_distance_m": 158.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 4.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 387,
    "overlap_duration_s": 23221,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.200000000000000011102230246251565404236316680908203125,
    "speed_b_std": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.200000000000000011102230246251565404236316680908203125,
            "max_sog": 0.90000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-12T12:55:10+00:00",
        "end": "2026-03-12T19:22:11+00:00"
    },
    "points_count": {
        "vessel_a": 80,
        "vessel_b": 80
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 148m, avg 158m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 148m, avg 158m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts🛰️✗ Eastern Mediterranean Monitoring Zone

Mar 12, 2026 12:03 UTC 80/100 ▼

Vessel A: IMO 9723007 (ALDEBARAN) Bahamas

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 314 meters
Average Distance: 324 meters
Duration: 5h 36m
Period: 2026-03-12T12:03:56+00:00 to 2026-03-12T17:39:56+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 314m, avg 324m) for 336 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	10/25	Min distance 314m, avg 324m
Duration	25/25	Duration 336 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±5m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-03-12T18:45:16.259922+00:00

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 311000232,
        "imo": 9723007,
        "name": "ALDEBARAN",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 314.1000000000000227373675443232059478759765625,
    "avg_distance_m": 323.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 5,
    "duration_minutes": 336,
    "overlap_duration_s": 20160,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-12T12:03:56+00:00",
        "end": "2026-03-12T17:39:56+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 314m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 336 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 314m, avg 324m) for 336 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70901570000000191384970094077289104461669921875,
            "lon": 33.321580699999998387283994816243648529052734375
        },
        "time_window": {
            "start_ts": "2026-03-12T12:03:56+00:00",
            "end_ts": "2026-03-12T17:39:56+00:00"
        },
        "searched_at": "2026-03-12T18:45:16.259922+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 12:02 UTC 85/100 ▼

Vessel A: IMO 9849382 (CLEAROCEAN MAGIC) Liberia

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 295 meters
Average Distance: 306 meters
Duration: 6h 27m
Period: 2026-03-12T12:53:12+00:00 to 2026-03-12T19:20:12+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 295m, avg 306m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	15/25	Min distance 295m, avg 306m
Duration	25/25	Duration 387 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±4m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636018900,
        "imo": 9849382,
        "name": "CLEAROCEAN MAGIC",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 295,
    "avg_distance_m": 306.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 4.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 387,
    "overlap_duration_s": 23220,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-12T12:53:12+00:00",
        "end": "2026-03-12T19:20:12+00:00"
    },
    "points_count": {
        "vessel_a": 78,
        "vessel_b": 78
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 295m, avg 306m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 295m, avg 306m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Eastern Mediterranean Monitoring Zone

Mar 12, 2026 12:01 UTC 80.0% ▼

Zone: Eastern Mediterranean Monitoring Zone
Duration: 6h 33m
Data Points: 82 AIS positions
Period: 2026-03-12T12:52:07+00:00 to 2026-03-12T19:25:09+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 393,
    "points_in_zone": 82,
    "first_point": {
        "ts": "2026-03-12T12:52:07+00:00",
        "lat": 34.70834330000000278459992841817438602447509765625,
        "lon": 33.3201150000000012596501619555056095123291015625
    },
    "last_point": {
        "ts": "2026-03-12T19:25:09+00:00",
        "lat": 34.70821670000000125355654745362699031829833984375,
        "lon": 33.31999669999999724723238614387810230255126953125
    }
}

Methodology: 2026.01.18

Loiter Eastern Mediterranean Monitoring Zone

Mar 12, 2026 12:01 UTC 75.0% ▼

Duration: 6h 33m
Radius: 14 meters
Data Points: 82 AIS positions
Centroid: 34.7082, 33.3200
Zone: Eastern Mediterranean Monitoring Zone

Show Raw Evidence JSON

{
    "radius_m": 13.5,
    "duration_minutes": 393,
    "points": 82,
    "centroid": {
        "lat": 34.70824606219512276084060431458055973052978515625,
        "lon": 33.320026054878070453924010507762432098388671875
    },
    "bbox": {
        "min_lat": 34.7081333000000000765794538892805576324462890625,
        "min_lon": 33.31994329999999848723746254108846187591552734375,
        "max_lat": 34.70834330000000278459992841817438602447509765625,
        "max_lon": 33.320116699999999809733708389103412628173828125
    },
    "zone_id": "discovered_037"
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 11:07 UTC 90/100 ▼

Vessel A: IMO 9800790 (HISTRIA ATLAS) Liberia

Vessel B: IMO 9259290 (ELKA DELOS) LIBERIA

Minimum Distance: 148 meters
Average Distance: 159 meters
Duration: 6h 33m
Period: 2026-03-12T11:43:07+00:00 to 2026-03-12T18:16:07+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.2 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 148m, avg 159m) for 393 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	20/25	Min distance 148m, avg 159m
Duration	25/25	Duration 393 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±5m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636020277,
        "imo": 9259290,
        "name": "ELKA DELOS",
        "flag": "LIBERIA"
    },
    "min_distance_m": 148.30000000000001136868377216160297393798828125,
    "avg_distance_m": 159.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 5.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 393,
    "overlap_duration_s": 23580,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.200000000000000011102230246251565404236316680908203125,
    "speed_b_std": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.200000000000000011102230246251565404236316680908203125,
            "max_sog": 0.90000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-03-12T11:43:07+00:00",
        "end": "2026-03-12T18:16:07+00:00"
    },
    "points_count": {
        "vessel_a": 95,
        "vessel_b": 95
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 148m, avg 159m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 393 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 148m, avg 159m) for 393 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 11:06 UTC 80/100 ▼

Vessel A: IMO 9723007 (ALDEBARAN) Bahamas

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 314 meters
Average Distance: 325 meters
Duration: 6h 12m
Period: 2026-03-12T11:27:56+00:00 to 2026-03-12T17:39:56+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.1 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 314m, avg 325m) for 372 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	10/25	Min distance 314m, avg 325m
Duration	25/25	Duration 372 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±5m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 311000232,
        "imo": 9723007,
        "name": "ALDEBARAN",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 314.1000000000000227373675443232059478759765625,
    "avg_distance_m": 324.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 5,
    "duration_minutes": 372,
    "overlap_duration_s": 22320,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-12T11:27:56+00:00",
        "end": "2026-03-12T17:39:56+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 314m, avg 325m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 372 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 314m, avg 325m) for 372 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 11:02 UTC 85/100 ▼

Vessel A: IMO 9849382 (CLEAROCEAN MAGIC) Liberia

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 294 meters
Average Distance: 306 meters
Duration: 6h 21m
Period: 2026-03-12T11:44:13+00:00 to 2026-03-12T18:05:11+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 294m, avg 306m) for 381 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	15/25	Min distance 294m, avg 306m
Duration	25/25	Duration 381 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±5m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636018900,
        "imo": 9849382,
        "name": "CLEAROCEAN MAGIC",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 294.19999999999998863131622783839702606201171875,
    "avg_distance_m": 306,
    "distance_consistency_m": 4.9000000000000003552713678800500929355621337890625,
    "duration_minutes": 381,
    "overlap_duration_s": 22858,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-12T11:44:13+00:00",
        "end": "2026-03-12T18:05:11+00:00"
    },
    "points_count": {
        "vessel_a": 86,
        "vessel_b": 86
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 294m, avg 306m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 381 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 294m, avg 306m) for 381 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Eastern Mediterranean Monitoring Zone

Mar 12, 2026 11:01 UTC 80.0% ▼

Zone: Eastern Mediterranean Monitoring Zone
Duration: 6h 33m
Data Points: 95 AIS positions
Period: 2026-03-12T11:43:07+00:00 to 2026-03-12T18:16:07+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 393,
    "points_in_zone": 95,
    "first_point": {
        "ts": "2026-03-12T11:43:07+00:00",
        "lat": 34.70820499999999952933649183250963687896728515625,
        "lon": 33.3200183000000009769792086444795131683349609375
    },
    "last_point": {
        "ts": "2026-03-12T18:16:07+00:00",
        "lat": 34.7082300000000003592504072003066539764404296875,
        "lon": 33.32000000000000028421709430404007434844970703125
    }
}

Methodology: 2026.01.18

Loiter Eastern Mediterranean Monitoring Zone

Mar 12, 2026 11:01 UTC 75.0% ▼

Duration: 6h 33m
Radius: 13 meters
Data Points: 95 AIS positions
Centroid: 34.7083, 33.3200
Zone: Eastern Mediterranean Monitoring Zone

Show Raw Evidence JSON

{
    "radius_m": 13.199999999999999289457264239899814128875732421875,
    "duration_minutes": 393,
    "points": 95,
    "centroid": {
        "lat": 34.70825032105263829862451530061662197113037109375,
        "lon": 33.32004027999999351550286519341170787811279296875
    },
    "bbox": {
        "min_lat": 34.7081333000000000765794538892805576324462890625,
        "min_lon": 33.31995330000000166137397172860801219940185546875,
        "max_lat": 34.70834330000000278459992841817438602447509765625,
        "max_lon": 33.32013669999999905257936916314065456390380859375
    },
    "zone_id": "discovered_037"
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 10:27 UTC 80/100 ▼

Vessel A: IMO 9723007 (ALDEBARAN) Bahamas

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 320 meters
Average Distance: 326 meters
Duration: 6h 24m
Period: 2026-03-12T10:27:56+00:00 to 2026-03-12T16:51:56+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 320m, avg 326m) for 384 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	10/25	Min distance 320m, avg 326m
Duration	25/25	Duration 384 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±5m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 311000232,
        "imo": 9723007,
        "name": "ALDEBARAN",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 319.69999999999998863131622783839702606201171875,
    "avg_distance_m": 326,
    "distance_consistency_m": 4.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 384,
    "overlap_duration_s": 23040,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-12T10:27:56+00:00",
        "end": "2026-03-12T16:51:56+00:00"
    },
    "points_count": {
        "vessel_a": 18,
        "vessel_b": 18
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 320m, avg 326m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 384 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 320m, avg 326m) for 384 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 10:10 UTC 90/100 ▼

Vessel A: IMO 9800790 (HISTRIA ATLAS) Liberia

Vessel B: IMO 9259290 (ELKA DELOS) LIBERIA

Minimum Distance: 152 meters
Average Distance: 160 meters
Duration: 6h 27m
Period: 2026-03-12T10:55:08+00:00 to 2026-03-12T17:22:06+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.2 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 152m, avg 160m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	20/25	Min distance 152m, avg 160m
Duration	25/25	Duration 387 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±5m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636020277,
        "imo": 9259290,
        "name": "ELKA DELOS",
        "flag": "LIBERIA"
    },
    "min_distance_m": 151.5,
    "avg_distance_m": 159.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 4.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 387,
    "overlap_duration_s": 23218,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.190000000000000002220446049250313080847263336181640625,
    "speed_b_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.190000000000000002220446049250313080847263336181640625,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-03-12T10:55:08+00:00",
        "end": "2026-03-12T17:22:06+00:00"
    },
    "points_count": {
        "vessel_a": 95,
        "vessel_b": 95
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 152m, avg 160m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (HISTRIA ATLAS and ELKA DELOS) maintained close proximity (min 152m, avg 160m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts Eastern Mediterranean Monitoring Zone

Mar 12, 2026 10:05 UTC 85/100 ▼

Vessel A: IMO 9849382 (CLEAROCEAN MAGIC) Liberia

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 294 meters
Average Distance: 306 meters
Duration: 6h 27m
Period: 2026-03-12T10:53:11+00:00 to 2026-03-12T17:20:12+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 294m, avg 306m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	15/25	Min distance 294m, avg 306m
Duration	25/25	Duration 387 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±5m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 636018900,
        "imo": 9849382,
        "name": "CLEAROCEAN MAGIC",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 294.19999999999998863131622783839702606201171875,
    "avg_distance_m": 305.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 4.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 387,
    "overlap_duration_s": 23221,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-12T10:53:11+00:00",
        "end": "2026-03-12T17:20:12+00:00"
    },
    "points_count": {
        "vessel_a": 87,
        "vessel_b": 87
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 294m, avg 306m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CLEAROCEAN MAGIC and HISTRIA ATLAS) maintained close proximity (min 294m, avg 306m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Eastern Mediterranean Monitoring Zone

Mar 12, 2026 10:04 UTC 80.0% ▼

Zone: Eastern Mediterranean Monitoring Zone
Duration: 6h 30m
Data Points: 96 AIS positions
Period: 2026-03-12T10:52:06+00:00 to 2026-03-12T17:22:06+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 96,
    "first_point": {
        "ts": "2026-03-12T10:52:06+00:00",
        "lat": 34.70827669999999898209352977573871612548828125,
        "lon": 33.32000500000000187128534889779984951019287109375
    },
    "last_point": {
        "ts": "2026-03-12T17:22:06+00:00",
        "lat": 34.70829669999999822493919054977595806121826171875,
        "lon": 33.320026699999999664214556105434894561767578125
    }
}

Methodology: 2026.01.18

Loiter Eastern Mediterranean Monitoring Zone

Mar 12, 2026 10:04 UTC 75.0% ▼

Duration: 6h 30m
Radius: 12 meters
Data Points: 96 AIS positions
Centroid: 34.7083, 33.3200
Zone: Eastern Mediterranean Monitoring Zone

Show Raw Evidence JSON

{
    "radius_m": 11.800000000000000710542735760100185871124267578125,
    "duration_minutes": 390,
    "points": 96,
    "centroid": {
        "lat": 34.70825878854166290921057225205004215240478515625,
        "lon": 33.3200364770833203920119558461010456085205078125
    },
    "bbox": {
        "min_lat": 34.70817670000000276786522590555250644683837890625,
        "min_lon": 33.31995330000000166137397172860801219940185546875,
        "max_lat": 34.70834330000000278459992841817438602447509765625,
        "max_lon": 33.32013669999999905257936916314065456390380859375
    },
    "zone_id": "discovered_037"
}

Methodology: 2026.01.18

Sts🛰️? Eastern Mediterranean Monitoring Zone

Mar 12, 2026 09:12 UTC 80/100 ▼

Vessel A: IMO 9723007 (ALDEBARAN) Bahamas

Vessel B: IMO 9800790 (HISTRIA ATLAS) Liberia

Minimum Distance: 320 meters
Average Distance: 326 meters
Duration: 5h 27m
Period: 2026-03-12T09:12:56+00:00 to 2026-03-12T14:39:56+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.1 knots
Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 320m, avg 326m) for 327 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	10/25	Min distance 320m, avg 326m
Duration	25/25	Duration 327 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±4m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Istanbul Black Sea Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1A_IW_GRDH_1SDV_20260312T035135_20260312T035200_063589_07FDEF_214A_COG • Acquired: 2026-03-12T03:51:35.758743Z • Platform: sentinel-1a

Click image to view full size

Searched: 2026-03-12T15:45:17.992281+00:00

{
    "vessel_a": {
        "mmsi": 311000232,
        "imo": 9723007,
        "name": "ALDEBARAN",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 636019212,
        "imo": 9800790,
        "name": "HISTRIA ATLAS",
        "flag": "Liberia"
    },
    "min_distance_m": 319.69999999999998863131622783839702606201171875,
    "avg_distance_m": 326.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 4.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 327,
    "overlap_duration_s": 19620,
    "speed_a_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-03-12T09:12:56+00:00",
        "end": "2026-03-12T14:39:56+00:00"
    },
    "points_count": {
        "vessel_a": 21,
        "vessel_b": 21
    },
    "zone_id": "discovered_037",
    "zone_name": "Istanbul Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 320m, avg 326m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 327 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Istanbul Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ALDEBARAN and HISTRIA ATLAS) maintained close proximity (min 320m, avg 326m) for 327 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Istanbul Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 34.70900979999999691472112317569553852081298828125,
            "lon": 33.32158199999999936835592961870133876800537109375
        },
        "time_window": {
            "start_ts": "2026-03-12T09:12:56+00:00",
            "end_ts": "2026-03-12T14:39:56+00:00"
        },
        "searched_at": "2026-03-12T15:45:17.992281+00:00",
        "scene_id": "S1A_IW_GRDH_1SDV_20260312T035135_20260312T035200_063589_07FDEF_214A_COG",
        "scene_datetime": "2026-03-12T03:51:35.758743Z",
        "platform": "sentinel-1a",
        "bbox": {
            "min_lon": 31.02057599999999837336872587911784648895263671875,
            "min_lat": 33.825726000000003068635123781859874725341796875,
            "max_lon": 34.1125109999999978072082740254700183868408203125,
            "max_lat": 35.73415399999999664260030840523540973663330078125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_209060_thumbnail_20260312154521.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/03\/event_209060_thumbnail_20260312154521.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}