Intelligence Feed - FleetLeaks

Zone Dwell Bosphorus/Dardanelles Approach

Jul 22, 2026 19:00 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 39m
Data Points: 68 AIS positions
Period: 2026-07-22T19:30:07+00:00 to 2026-07-23T02:09:11+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 399.1000000000000227373675443232059478759765625,
    "points_in_zone": 68,
    "first_point": {
        "ts": "2026-07-22T19:30:07+00:00",
        "lat": 40.95180169999999719721017754636704921722412109375,
        "lon": 28.75009000000000014551915228366851806640625
    },
    "last_point": {
        "ts": "2026-07-23T02:09:11+00:00",
        "lat": 40.95153330000000124755388242192566394805908203125,
        "lon": 28.7514366999999992913217283785343170166015625
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 22, 2026 19:00 UTC 75.0% ▼

Duration: 6h 39m
Radius: 96 meters
Data Points: 68 AIS positions
Centroid: 40.9517, 28.7507
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 96.400000000000005684341886080801486968994140625,
    "duration_minutes": 399.1000000000000227373675443232059478759765625,
    "points": 68,
    "centroid": {
        "lat": 40.95169019411763855487151886336505413055419921875,
        "lon": 28.750726785294119736136053688824176788330078125
    },
    "bbox": {
        "min_lat": 40.95143499999999647798176738433539867401123046875,
        "min_lon": 28.74994170000000082154656411148607730865478515625,
        "max_lat": 40.9520150000000029422153602354228496551513671875,
        "max_lon": 28.751870000000000260342858382500708103179931640625
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 22, 2026 18:42 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 36m
Data Points: 70 AIS positions
Period: 2026-07-22T18:51:07+00:00 to 2026-07-23T01:27:09+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 396,
    "points_in_zone": 70,
    "first_point": {
        "ts": "2026-07-22T18:51:07+00:00",
        "lat": 40.95184830000000175687091541476547718048095703125,
        "lon": 28.750131700000000734007699065841734409332275390625
    },
    "last_point": {
        "ts": "2026-07-23T01:27:09+00:00",
        "lat": 40.95156829999999814617694937624037265777587890625,
        "lon": 28.751651700000000033696778700686991214752197265625
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 22, 2026 18:42 UTC 75.0% ▼

Duration: 6h 36m
Radius: 114 meters
Data Points: 70 AIS positions
Centroid: 40.9517, 28.7505
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 114.099999999999994315658113919198513031005859375,
    "duration_minutes": 396,
    "points": 70,
    "centroid": {
        "lat": 40.95173147428571525097140693105757236480712890625,
        "lon": 28.75052078285714429739527986384928226470947265625
    },
    "bbox": {
        "min_lat": 40.95143499999999647798176738433539867401123046875,
        "min_lon": 28.74994170000000082154656411148607730865478515625,
        "max_lat": 40.9520150000000029422153602354228496551513671875,
        "max_lon": 28.751870000000000260342858382500708103179931640625
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 22, 2026 07:01 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 1h 36m
Data Points: 31 AIS positions
Period: 2026-07-22T07:01:35+00:00 to 2026-07-22T08:37:34+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 96,
    "points_in_zone": 31,
    "first_point": {
        "ts": "2026-07-22T07:01:35+00:00",
        "lat": 40.95842830000000134305082610808312892913818359375,
        "lon": 28.743673300000001091802914743311703205108642578125
    },
    "last_point": {
        "ts": "2026-07-22T08:37:34+00:00",
        "lat": 40.95854829999999680012479075230658054351806640625,
        "lon": 28.743984999999998564135239575989544391632080078125
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 22, 2026 07:01 UTC 75.0% ▼

Duration: 1h 36m
Radius: 31 meters
Data Points: 31 AIS positions
Centroid: 40.9585, 28.7439
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 31.199999999999999289457264239899814128875732421875,
    "duration_minutes": 96,
    "points": 31,
    "centroid": {
        "lat": 40.9585355322580682013722253032028675079345703125,
        "lon": 28.74391484193548507164450711570680141448974609375
    },
    "bbox": {
        "min_lat": 40.958363300000002027445589192211627960205078125,
        "min_lon": 28.743655000000000399040800402872264385223388671875,
        "max_lat": 40.95866170000000039408405427820980548858642578125,
        "max_lon": 28.744248299999998863540895399637520313262939453125
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 22, 2026 06:01 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 2h 36m
Data Points: 51 AIS positions
Period: 2026-07-22T06:01:32+00:00 to 2026-07-22T08:37:34+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 156,
    "points_in_zone": 51,
    "first_point": {
        "ts": "2026-07-22T06:01:32+00:00",
        "lat": 40.95788999999999902001945883966982364654541015625,
        "lon": 28.74313169999999928450051811523735523223876953125
    },
    "last_point": {
        "ts": "2026-07-22T08:37:34+00:00",
        "lat": 40.95854829999999680012479075230658054351806640625,
        "lon": 28.743984999999998564135239575989544391632080078125
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 22, 2026 06:01 UTC 75.0% ▼

Duration: 2h 36m
Radius: 71 meters
Data Points: 51 AIS positions
Centroid: 40.9584, 28.7437
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 70.599999999999994315658113919198513031005859375,
    "duration_minutes": 156,
    "points": 51,
    "centroid": {
        "lat": 40.95837597843137700692750513553619384765625,
        "lon": 28.743671798039212461617353255860507488250732421875
    },
    "bbox": {
        "min_lat": 40.95788999999999902001945883966982364654541015625,
        "min_lon": 28.743126700000001250145942321978509426116943359375,
        "max_lat": 40.95866170000000039408405427820980548858642578125,
        "max_lon": 28.744248299999998863540895399637520313262939453125
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 22, 2026 05:04 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 3h 33m
Data Points: 68 AIS positions
Period: 2026-07-22T05:04:34+00:00 to 2026-07-22T08:37:34+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 213,
    "points_in_zone": 68,
    "first_point": {
        "ts": "2026-07-22T05:04:34+00:00",
        "lat": 40.95730669999999662422851542942225933074951171875,
        "lon": 28.7431117000000000416548573412001132965087890625
    },
    "last_point": {
        "ts": "2026-07-22T08:37:34+00:00",
        "lat": 40.95854829999999680012479075230658054351806640625,
        "lon": 28.743984999999998564135239575989544391632080078125
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 22, 2026 05:04 UTC 75.0% ▼

Duration: 3h 33m
Radius: 105 meters
Data Points: 68 AIS positions
Centroid: 40.9582, 28.7435
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 104.7000000000000028421709430404007434844970703125,
    "duration_minutes": 213,
    "points": 68,
    "centroid": {
        "lat": 40.95818102794117265830209362320601940155029296875,
        "lon": 28.743520614705886373485554940998554229736328125
    },
    "bbox": {
        "min_lat": 40.95730669999999662422851542942225933074951171875,
        "min_lon": 28.742993299999998413341018022038042545318603515625,
        "max_lat": 40.95866170000000039408405427820980548858642578125,
        "max_lon": 28.744248299999998863540895399637520313262939453125
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 22, 2026 04:46 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 3h 51m
Data Points: 72 AIS positions
Period: 2026-07-22T04:46:31+00:00 to 2026-07-22T08:37:34+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 231.099999999999994315658113919198513031005859375,
    "points_in_zone": 72,
    "first_point": {
        "ts": "2026-07-22T04:46:31+00:00",
        "lat": 40.95719170000000275422280537895858287811279296875,
        "lon": 28.7430650000000014188117347657680511474609375
    },
    "last_point": {
        "ts": "2026-07-22T08:37:34+00:00",
        "lat": 40.95854829999999680012479075230658054351806640625,
        "lon": 28.743984999999998564135239575989544391632080078125
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 22, 2026 04:46 UTC 75.0% ▼

Duration: 3h 51m
Radius: 110 meters
Data Points: 72 AIS positions
Centroid: 40.9581, 28.7435
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 110,
    "duration_minutes": 231.099999999999994315658113919198513031005859375,
    "points": 72,
    "centroid": {
        "lat": 40.95812659583332759893892216496169567108154296875,
        "lon": 28.743498427777783632564023719169199466705322265625
    },
    "bbox": {
        "min_lat": 40.95717830000000247991920332424342632293701171875,
        "min_lon": 28.742993299999998413341018022038042545318603515625,
        "max_lat": 40.95866170000000039408405427820980548858642578125,
        "max_lon": 28.744248299999998863540895399637520313262939453125
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts🛰️? Bosphorus/Dardanelles Approach

Jul 19, 2026 23:04 UTC 60/100 ▼

Vessel A: IMO 9359569 (SAMANYOLU) PALAU

Vessel B: IMO 9221803 (YARA J) COMOROS

Minimum Distance: 444 meters
Average Distance: 450 meters
Duration: 56 minutes
Period: 2026-07-19T23:04:47+00:00 to 2026-07-20T00:00:48+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.1 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 60/100

Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 444m, avg 450m) for 56 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 444m, avg 450m
Duration	10/25	Duration 56 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: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1D_IW_GRDH_1SDV_20260720T041345_20260720T041410_003752_006BAD_2476_COG • Acquired: 2026-07-20T04:13:45.759758Z • Platform: sentinel-1d

Click image to view full size

Searched: 2026-07-20T05:45:01.776569+00:00

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "vessel_b": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "min_distance_m": 443.69999999999998863131622783839702606201171875,
    "avg_distance_m": 449.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 5.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 56,
    "overlap_duration_s": 3361,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_b_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-19T23:04:47+00:00",
        "end": "2026-07-20T00:00:48+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 60,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 444m, avg 450m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 56 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: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 444m, avg 450m) for 56 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 40.95895500000000311047188006341457366943359375,
            "lon": 28.744161399999999417786966660059988498687744140625
        },
        "time_window": {
            "start_ts": "2026-07-19T23:04:47+00:00",
            "end_ts": "2026-07-20T00:00:48+00:00"
        },
        "searched_at": "2026-07-20T05:45:01.776569+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260720T041345_20260720T041410_003752_006BAD_2476_COG",
        "scene_datetime": "2026-07-20T04:13:45.759758Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 26.11334599999999994679455994628369808197021484375,
            "min_lat": 40.40309500000000042518877307884395122528076171875,
            "max_lon": 29.581807999999998770590536878444254398345947265625,
            "max_lat": 42.3123250000000012960299500264227390289306640625
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/07\/event_992009_thumbnail_20260720054506.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/07\/event_992009_thumbnail_20260720054506.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

Methodology: 2026.01.18

Sts Bosphorus/Dardanelles Approach

Jul 19, 2026 22:17 UTC 65/100 ▼

Vessel A: IMO 9359569 (SAMANYOLU) PALAU

Vessel B: IMO 9221803 (YARA J) COMOROS

Minimum Distance: 444 meters
Average Distance: 453 meters
Duration: 1h 24m
Period: 2026-07-19T22:36:51+00:00 to 2026-07-20T00:00:48+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.1 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 444m, avg 453m) for 84 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 444m, avg 453m
Duration	15/25	Duration 84 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: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "vessel_b": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "min_distance_m": 443.69999999999998863131622783839702606201171875,
    "avg_distance_m": 452.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 6.9000000000000003552713678800500929355621337890625,
    "duration_minutes": 84,
    "overlap_duration_s": 5037,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-19T22:36:51+00:00",
        "end": "2026-07-20T00:00:48+00:00"
    },
    "points_count": {
        "vessel_a": 14,
        "vessel_b": 14
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 444m, avg 453m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 84 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: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 444m, avg 453m) for 84 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 22:17 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 1h 45m
Data Points: 19 AIS positions
Period: 2026-07-19T22:17:03+00:00 to 2026-07-20T00:02:02+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 105,
    "points_in_zone": 19,
    "first_point": {
        "ts": "2026-07-19T22:17:03+00:00",
        "lat": 40.95711829999999764595486340112984180450439453125,
        "lon": 28.743144999999998390194377861917018890380859375
    },
    "last_point": {
        "ts": "2026-07-20T00:02:02+00:00",
        "lat": 40.956715000000002646629582159221172332763671875,
        "lon": 28.743520000000000180762071977369487285614013671875
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 22:17 UTC 75.0% ▼

Duration: 1h 45m
Radius: 43 meters
Data Points: 19 AIS positions
Centroid: 40.9570, 28.7433
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 42.60000000000000142108547152020037174224853515625,
    "duration_minutes": 105,
    "points": 19,
    "centroid": {
        "lat": 40.95704167368420911543580587022006511688232421875,
        "lon": 28.743253784210519796715743723325431346893310546875
    },
    "bbox": {
        "min_lat": 40.956715000000002646629582159221172332763671875,
        "min_lon": 28.743140000000000355839802068658173084259033203125,
        "max_lat": 40.95713500000000095724317361600697040557861328125,
        "max_lon": 28.743520000000000180762071977369487285614013671875
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 21:23 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 2h 39m
Data Points: 23 AIS positions
Period: 2026-07-19T21:23:00+00:00 to 2026-07-20T00:02:02+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 159,
    "points_in_zone": 23,
    "first_point": {
        "ts": "2026-07-19T21:23:00+00:00",
        "lat": 40.9574233000000020865627448074519634246826171875,
        "lon": 28.742999999999998550492819049395620822906494140625
    },
    "last_point": {
        "ts": "2026-07-20T00:02:02+00:00",
        "lat": 40.956715000000002646629582159221172332763671875,
        "lon": 28.743520000000000180762071977369487285614013671875
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 21:23 UTC 75.0% ▼

Duration: 2h 39m
Radius: 48 meters
Data Points: 23 AIS positions
Centroid: 40.9571, 28.7432
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 48.2000000000000028421709430404007434844970703125,
    "duration_minutes": 159,
    "points": 23,
    "centroid": {
        "lat": 40.9570826869565252081883954815566539764404296875,
        "lon": 28.74321689565217496920013218186795711517333984375
    },
    "bbox": {
        "min_lat": 40.956715000000002646629582159221172332763671875,
        "min_lon": 28.742999999999998550492819049395620822906494140625,
        "max_lat": 40.9574233000000020865627448074519634246826171875,
        "max_lon": 28.743520000000000180762071977369487285614013671875
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts🛰️✗ Bosphorus/Dardanelles Approach

Jul 19, 2026 21:00 UTC 75/100 ▼

Vessel A: IMO 9359569 (SAMANYOLU) PALAU

Vessel B: IMO 9221803 (YARA J) COMOROS

Minimum Distance: 444 meters
Average Distance: 455 meters
Duration: 3 hours
Period: 2026-07-19T21:00:48+00:00 to 2026-07-20T00:00:48+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.1 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 444m, avg 455m) for 180 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 444m, avg 455m
Duration	25/25	Duration 180 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±8m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-20T03:30:04.872125+00:00

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "vessel_b": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "min_distance_m": 443.69999999999998863131622783839702606201171875,
    "avg_distance_m": 455,
    "distance_consistency_m": 7.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 180,
    "overlap_duration_s": 10800,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-19T21:00:48+00:00",
        "end": "2026-07-20T00:00:48+00:00"
    },
    "points_count": {
        "vessel_a": 18,
        "vessel_b": 18
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 444m, avg 455m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 180 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b18m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 444m, avg 455m) for 180 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.95901669999999938909240881912410259246826171875,
            "lon": 28.744098699999998558496372424997389316558837890625
        },
        "time_window": {
            "start_ts": "2026-07-19T21:00:48+00:00",
            "end_ts": "2026-07-20T00:00:48+00:00"
        },
        "searched_at": "2026-07-20T03:30:04.872125+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Sts Bosphorus/Dardanelles Approach

Jul 19, 2026 20:42 UTC 75/100 ▼

Vessel A: IMO 9359569 (SAMANYOLU) PALAU

Vessel B: IMO 9221803 (YARA J) COMOROS

Minimum Distance: 444 meters
Average Distance: 455 meters
Duration: 3h 18m
Period: 2026-07-19T20:42:48+00:00 to 2026-07-20T00:00:48+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.1 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 444m, avg 455m) for 198 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 444m, avg 455m
Duration	25/25	Duration 198 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±8m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "vessel_b": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "min_distance_m": 443.69999999999998863131622783839702606201171875,
    "avg_distance_m": 454.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 7.5,
    "duration_minutes": 198,
    "overlap_duration_s": 11880,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-19T20:42:48+00:00",
        "end": "2026-07-20T00:00:48+00:00"
    },
    "points_count": {
        "vessel_a": 20,
        "vessel_b": 20
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 444m, avg 455m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 198 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b18m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 444m, avg 455m) for 198 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 20:01 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 4 hours
Data Points: 28 AIS positions
Period: 2026-07-19T20:01:59+00:00 to 2026-07-20T00:02:02+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 240.099999999999994315658113919198513031005859375,
    "points_in_zone": 28,
    "first_point": {
        "ts": "2026-07-19T20:01:59+00:00",
        "lat": 40.957206700000000410000211559236049652099609375,
        "lon": 28.74313169999999928450051811523735523223876953125
    },
    "last_point": {
        "ts": "2026-07-20T00:02:02+00:00",
        "lat": 40.956715000000002646629582159221172332763671875,
        "lon": 28.743520000000000180762071977369487285614013671875
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 20:01 UTC 75.0% ▼

Duration: 4 hours
Radius: 52 meters
Data Points: 28 AIS positions
Centroid: 40.9571, 28.7432
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 52.2999999999999971578290569595992565155029296875,
    "duration_minutes": 240.099999999999994315658113919198513031005859375,
    "points": 28,
    "centroid": {
        "lat": 40.9571182214285727241076529026031494140625,
        "lon": 28.743198882142859673649581964127719402313232421875
    },
    "bbox": {
        "min_lat": 40.956715000000002646629582159221172332763671875,
        "min_lon": 28.742999999999998550492819049395620822906494140625,
        "max_lat": 40.9574233000000020865627448074519634246826171875,
        "max_lon": 28.743520000000000180762071977369487285614013671875
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 19:02 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 4h 59m
Data Points: 37 AIS positions
Period: 2026-07-19T19:02:05+00:00 to 2026-07-20T00:02:02+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 299.8999999999999772626324556767940521240234375,
    "points_in_zone": 37,
    "first_point": {
        "ts": "2026-07-19T19:02:05+00:00",
        "lat": 40.95708830000000233440005104057490825653076171875,
        "lon": 28.743148300000001427179086022078990936279296875
    },
    "last_point": {
        "ts": "2026-07-20T00:02:02+00:00",
        "lat": 40.956715000000002646629582159221172332763671875,
        "lon": 28.743520000000000180762071977369487285614013671875
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 19:02 UTC 75.0% ▼

Duration: 4h 59m
Radius: 54 meters
Data Points: 37 AIS positions
Centroid: 40.9571, 28.7432
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 53.60000000000000142108547152020037174224853515625,
    "duration_minutes": 299.8999999999999772626324556767940521240234375,
    "points": 37,
    "centroid": {
        "lat": 40.95712455135134888450920698232948780059814453125,
        "lon": 28.74318311891892108178581111133098602294921875
    },
    "bbox": {
        "min_lat": 40.956715000000002646629582159221172332763671875,
        "min_lon": 28.742999999999998550492819049395620822906494140625,
        "max_lat": 40.9574233000000020865627448074519634246826171875,
        "max_lon": 28.743520000000000180762071977369487285614013671875
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts Bosphorus/Dardanelles Approach

Jul 19, 2026 19:00 UTC 70/100 ▼

Vessel A: IMO 9221803 (YARA J) COMOROS

Vessel B: IMO 9359569 (SAMANYOLU) PALAU

Minimum Distance: 445 meters
Average Distance: 454 meters
Duration: 1h 54m
Period: 2026-07-19T19:32:01+00:00 to 2026-07-19T21:26:00+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.1 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 445m, avg 454m) for 114 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 445m, avg 454m
Duration	20/25	Duration 114 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: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "vessel_b": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "min_distance_m": 445.1000000000000227373675443232059478759765625,
    "avg_distance_m": 453.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 6.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 114,
    "overlap_duration_s": 6839,
    "speed_a_avg": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.11000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-19T19:32:01+00:00",
        "end": "2026-07-19T21:26:00+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 445m, avg 454m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 114 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: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 445m, avg 454m) for 114 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts Bosphorus/Dardanelles Approach

Jul 19, 2026 18:23 UTC 75/100 ▼

Vessel A: IMO 9221803 (YARA J) COMOROS

Vessel B: IMO 9359569 (SAMANYOLU) PALAU

Minimum Distance: 445 meters
Average Distance: 456 meters
Duration: 3h 3m
Period: 2026-07-19T18:23:02+00:00 to 2026-07-19T21:26:00+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.1 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 444m, avg 456m) for 183 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 444m, avg 456m
Duration	25/25	Duration 183 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±9m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "vessel_b": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "min_distance_m": 444.5,
    "avg_distance_m": 456.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 8.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 183,
    "overlap_duration_s": 10978,
    "speed_a_avg": 0.14000000000000001332267629550187848508358001708984375,
    "speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.14000000000000001332267629550187848508358001708984375,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-19T18:23:02+00:00",
        "end": "2026-07-19T21:26:00+00:00"
    },
    "points_count": {
        "vessel_a": 23,
        "vessel_b": 23
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 444m, avg 456m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 183 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b19m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 444m, avg 456m) for 183 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 18:05 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 5h 57m
Data Points: 48 AIS positions
Period: 2026-07-19T18:05:03+00:00 to 2026-07-20T00:02:02+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 357,
    "points_in_zone": 48,
    "first_point": {
        "ts": "2026-07-19T18:05:03+00:00",
        "lat": 40.95687170000000065783751779235899448394775390625,
        "lon": 28.743186699999998978682924644090235233306884765625
    },
    "last_point": {
        "ts": "2026-07-20T00:02:02+00:00",
        "lat": 40.956715000000002646629582159221172332763671875,
        "lon": 28.743520000000000180762071977369487285614013671875
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 18:05 UTC 75.0% ▼

Duration: 5h 57m
Radius: 51 meters
Data Points: 48 AIS positions
Centroid: 40.9571, 28.7432
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 51.10000000000000142108547152020037174224853515625,
    "duration_minutes": 357,
    "points": 48,
    "centroid": {
        "lat": 40.9570967395833491764278733171522617340087890625,
        "lon": 28.743181814583333988366575795225799083709716796875
    },
    "bbox": {
        "min_lat": 40.956715000000002646629582159221172332763671875,
        "min_lon": 28.742999999999998550492819049395620822906494140625,
        "max_lat": 40.9574233000000020865627448074519634246826171875,
        "max_lon": 28.743520000000000180762071977369487285614013671875
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts Bosphorus/Dardanelles Approach

Jul 19, 2026 17:05 UTC 75/100 ▼

Vessel A: IMO 9359569 (SAMANYOLU) PALAU

Vessel B: IMO 9221803 (YARA J) COMOROS

Minimum Distance: 441 meters
Average Distance: 457 meters
Duration: 3h 3m
Period: 2026-07-19T17:12:48+00:00 to 2026-07-19T20:15:47+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.1 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 441m, avg 457m) for 183 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 441m, avg 457m
Duration	25/25	Duration 183 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±8m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "vessel_b": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "min_distance_m": 440.69999999999998863131622783839702606201171875,
    "avg_distance_m": 457,
    "distance_consistency_m": 8,
    "duration_minutes": 183,
    "overlap_duration_s": 10979,
    "speed_a_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_avg": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.11000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        }
    },
    "time_window": {
        "start": "2026-07-19T17:12:48+00:00",
        "end": "2026-07-19T20:15:47+00:00"
    },
    "points_count": {
        "vessel_a": 18,
        "vessel_b": 18
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 441m, avg 457m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 183 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b18m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 441m, avg 457m) for 183 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 17:05 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 30m
Data Points: 53 AIS positions
Period: 2026-07-19T17:32:00+00:00 to 2026-07-20T00:02:02+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 390,
    "points_in_zone": 53,
    "first_point": {
        "ts": "2026-07-19T17:32:00+00:00",
        "lat": 40.95704169999999777473931317217648029327392578125,
        "lon": 28.743134999999998768771547474898397922515869140625
    },
    "last_point": {
        "ts": "2026-07-20T00:02:02+00:00",
        "lat": 40.956715000000002646629582159221172332763671875,
        "lon": 28.743520000000000180762071977369487285614013671875
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 17:05 UTC 75.0% ▼

Duration: 6h 30m
Radius: 50 meters
Data Points: 53 AIS positions
Centroid: 40.9571, 28.7432
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 50.10000000000000142108547152020037174224853515625,
    "duration_minutes": 390,
    "points": 53,
    "centroid": {
        "lat": 40.9570858207547274787430069409310817718505859375,
        "lon": 28.743181201886788045385401346720755100250244140625
    },
    "bbox": {
        "min_lat": 40.956715000000002646629582159221172332763671875,
        "min_lon": 28.742999999999998550492819049395620822906494140625,
        "max_lat": 40.9574233000000020865627448074519634246826171875,
        "max_lon": 28.743520000000000180762071977369487285614013671875
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 16:02 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 30m
Data Points: 51 AIS positions
Period: 2026-07-19T16:56:04+00:00 to 2026-07-19T23:26:04+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 390,
    "points_in_zone": 51,
    "first_point": {
        "ts": "2026-07-19T16:56:04+00:00",
        "lat": 40.9569017000000030748196877539157867431640625,
        "lon": 28.743308299999998922658051014877855777740478515625
    },
    "last_point": {
        "ts": "2026-07-19T23:26:04+00:00",
        "lat": 40.9571267000000034386175684630870819091796875,
        "lon": 28.74325999999999936562744551338255405426025390625
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 16:02 UTC 75.0% ▼

Duration: 6h 30m
Radius: 39 meters
Data Points: 51 AIS positions
Centroid: 40.9571, 28.7432
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 39.39999999999999857891452847979962825775146484375,
    "duration_minutes": 390,
    "points": 51,
    "centroid": {
        "lat": 40.95709081764706382955409935675561428070068359375,
        "lon": 28.743164643137252056703800917603075504302978515625
    },
    "bbox": {
        "min_lat": 40.95687170000000065783751779235899448394775390625,
        "min_lon": 28.742999999999998550492819049395620822906494140625,
        "max_lat": 40.9574233000000020865627448074519634246826171875,
        "max_lon": 28.743321699999999196961653069593012332916259765625
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts🛰️✗ Bosphorus/Dardanelles Approach

Jul 19, 2026 15:06 UTC 65/100 ▼

Vessel A: IMO 9359569 (SAMANYOLU) PALAU

Vessel B: IMO 9221803 (YARA J) COMOROS

Minimum Distance: 445 meters
Average Distance: 459 meters
Duration: 1h 16m
Period: 2026-07-19T15:06:46+00:00 to 2026-07-19T16:22:49+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.2 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 445m, avg 459m) for 76 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 445m, avg 459m
Duration	15/25	Duration 76 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±11m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-19T21:15:01.857930+00:00

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "vessel_b": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "min_distance_m": 444.69999999999998863131622783839702606201171875,
    "avg_distance_m": 459.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 11,
    "duration_minutes": 76,
    "overlap_duration_s": 4563,
    "speed_a_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_b_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.1600000000000000033306690738754696212708950042724609375,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        }
    },
    "time_window": {
        "start": "2026-07-19T15:06:46+00:00",
        "end": "2026-07-19T16:22:49+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 445m, avg 459m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 76 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b111m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 445m, avg 459m) for 76 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.9586886000000021113010006956756114959716796875,
            "lon": 28.744314700000000328827809426002204418182373046875
        },
        "time_window": {
            "start_ts": "2026-07-19T15:06:46+00:00",
            "end_ts": "2026-07-19T16:22:49+00:00"
        },
        "searched_at": "2026-07-19T21:15:01.857930+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 15:02 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 33m
Data Points: 48 AIS positions
Period: 2026-07-19T15:56:03+00:00 to 2026-07-19T22:29:05+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 393,
    "points_in_zone": 48,
    "first_point": {
        "ts": "2026-07-19T15:56:03+00:00",
        "lat": 40.95682500000000203499439521692693233489990234375,
        "lon": 28.743441700000001759462975314818322658538818359375
    },
    "last_point": {
        "ts": "2026-07-19T22:29:05+00:00",
        "lat": 40.95705170000000094887582235969603061676025390625,
        "lon": 28.74322000000000087993612396530807018280029296875
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 15:02 UTC 75.0% ▼

Duration: 6h 33m
Radius: 52 meters
Data Points: 48 AIS positions
Centroid: 40.9570, 28.7432
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 52.2999999999999971578290569595992565155029296875,
    "duration_minutes": 393,
    "points": 48,
    "centroid": {
        "lat": 40.95703941249998791818143217824399471282958984375,
        "lon": 28.743192916666668423886221717111766338348388671875
    },
    "bbox": {
        "min_lat": 40.9566317000000026382622309029102325439453125,
        "min_lon": 28.742999999999998550492819049395620822906494140625,
        "max_lat": 40.9574233000000020865627448074519634246826171875,
        "max_lon": 28.7435033000000004221874405629932880401611328125
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts Bosphorus/Dardanelles Approach

Jul 19, 2026 14:52 UTC 70/100 ▼

Vessel A: IMO 9359569 (SAMANYOLU) PALAU

Vessel B: IMO 9221803 (YARA J) COMOROS

Minimum Distance: 445 meters
Average Distance: 463 meters
Duration: 1h 30m
Period: 2026-07-19T14:52:50+00:00 to 2026-07-19T16:22:49+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.1 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 445m, avg 463m) for 90 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 445m, avg 463m
Duration	20/25	Duration 90 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: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "vessel_b": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "min_distance_m": 444.69999999999998863131622783839702606201171875,
    "avg_distance_m": 463.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 13,
    "duration_minutes": 90,
    "overlap_duration_s": 5399,
    "speed_a_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.11999999999999999555910790149937383830547332763671875,
    "speed_b_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.11999999999999999555910790149937383830547332763671875,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        }
    },
    "time_window": {
        "start": "2026-07-19T14:52:50+00:00",
        "end": "2026-07-19T16:22:49+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 445m, avg 463m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 90 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: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 445m, avg 463m) for 90 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 14:01 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 23m
Data Points: 45 AIS positions
Period: 2026-07-19T14:17:02+00:00 to 2026-07-19T20:40:59+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 383.8999999999999772626324556767940521240234375,
    "points_in_zone": 45,
    "first_point": {
        "ts": "2026-07-19T14:17:02+00:00",
        "lat": 40.95686500000000052068571676500141620635986328125,
        "lon": 28.74334999999999951114659779705107212066650390625
    },
    "last_point": {
        "ts": "2026-07-19T20:40:59+00:00",
        "lat": 40.95728669999999738138285465538501739501953125,
        "lon": 28.743126700000001250145942321978509426116943359375
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 14:01 UTC 75.0% ▼

Duration: 6h 23m
Radius: 45 meters
Data Points: 45 AIS positions
Centroid: 40.9570, 28.7432
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 45.2000000000000028421709430404007434844970703125,
    "duration_minutes": 383.8999999999999772626324556767940521240234375,
    "points": 45,
    "centroid": {
        "lat": 40.95698159555553274913108907639980316162109375,
        "lon": 28.743229888888894407728002988733351230621337890625
    },
    "bbox": {
        "min_lat": 40.9566317000000026382622309029102325439453125,
        "min_lon": 28.743068300000000903082764125429093837738037109375,
        "max_lat": 40.95728669999999738138285465538501739501953125,
        "max_lon": 28.7435033000000004221874405629932880401611328125
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts Bosphorus/Dardanelles Approach

Jul 19, 2026 13:36 UTC 75/100 ▼

Vessel A: IMO 9221803 (YARA J) COMOROS

Vessel B: IMO 9359569 (SAMANYOLU) PALAU

Minimum Distance: 445 meters
Average Distance: 458 meters
Duration: 3h 6m
Period: 2026-07-19T13:07:57+00:00 to 2026-07-19T16:14:00+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.1 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 445m, avg 458m) for 186 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 445m, avg 458m
Duration	25/25	Duration 186 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±8m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "vessel_b": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "min_distance_m": 445.1000000000000227373675443232059478759765625,
    "avg_distance_m": 458,
    "distance_consistency_m": 8.199999999999999289457264239899814128875732421875,
    "duration_minutes": 186.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 11163,
    "speed_a_avg": 0.11999999999999999555910790149937383830547332763671875,
    "speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.11999999999999999555910790149937383830547332763671875,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-19T13:07:57+00:00",
        "end": "2026-07-19T16:14:00+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 445m, avg 458m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 186 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b18m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 445m, avg 458m) for 186 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 13:07 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 30m
Data Points: 47 AIS positions
Period: 2026-07-19T13:41:00+00:00 to 2026-07-19T20:11:03+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 390.1000000000000227373675443232059478759765625,
    "points_in_zone": 47,
    "first_point": {
        "ts": "2026-07-19T13:41:00+00:00",
        "lat": 40.9568349999999981037035468034446239471435546875,
        "lon": 28.743324999999998681232682429254055023193359375
    },
    "last_point": {
        "ts": "2026-07-19T20:11:03+00:00",
        "lat": 40.95725829999999945130184642039239406585693359375,
        "lon": 28.7431432999999998401108314283192157745361328125
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 13:07 UTC 75.0% ▼

Duration: 6h 30m
Radius: 44 meters
Data Points: 47 AIS positions
Centroid: 40.9570, 28.7432
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 43.5,
    "duration_minutes": 390.1000000000000227373675443232059478759765625,
    "points": 47,
    "centroid": {
        "lat": 40.95696751914891819978947751224040985107421875,
        "lon": 28.7432370574468194490691530518233776092529296875
    },
    "bbox": {
        "min_lat": 40.9566317000000026382622309029102325439453125,
        "min_lon": 28.743068300000000903082764125429093837738037109375,
        "max_lat": 40.95725829999999945130184642039239406585693359375,
        "max_lon": 28.7435033000000004221874405629932880401611328125
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts🛰️✗ Bosphorus/Dardanelles Approach

Jul 19, 2026 12:41 UTC 75/100 ▼

Vessel A: IMO 9221803 (YARA J) COMOROS

Vessel B: IMO 9359569 (SAMANYOLU) PALAU

Minimum Distance: 445 meters
Average Distance: 458 meters
Duration: 3h 33m
Period: 2026-07-19T12:41:02+00:00 to 2026-07-19T16:14:00+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.1 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 445m, avg 458m) for 213 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 445m, avg 458m
Duration	25/25	Duration 213 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±10m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-19T19:15:08.164864+00:00

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "vessel_b": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "min_distance_m": 445.1000000000000227373675443232059478759765625,
    "avg_distance_m": 458.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 9.5,
    "duration_minutes": 213,
    "overlap_duration_s": 12778,
    "speed_a_avg": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.11000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-19T12:41:02+00:00",
        "end": "2026-07-19T16:14:00+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 445m, avg 458m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 213 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b110m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 445m, avg 458m) for 213 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.9587322000000000343788997270166873931884765625,
            "lon": 28.744267799999999368765202234499156475067138671875
        },
        "time_window": {
            "start_ts": "2026-07-19T12:41:02+00:00",
            "end_ts": "2026-07-19T16:14:00+00:00"
        },
        "searched_at": "2026-07-19T19:15:08.164864+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 12:38 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 32m
Data Points: 41 AIS positions
Period: 2026-07-19T12:56:05+00:00 to 2026-07-19T19:28:59+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 392.8999999999999772626324556767940521240234375,
    "points_in_zone": 41,
    "first_point": {
        "ts": "2026-07-19T12:56:05+00:00",
        "lat": 40.9568517000000014149918570183217525482177734375,
        "lon": 28.743351700000001613943823031149804592132568359375
    },
    "last_point": {
        "ts": "2026-07-19T19:28:59+00:00",
        "lat": 40.95713169999999792025846545584499835968017578125,
        "lon": 28.7431550000000015643308870494365692138671875
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 12:38 UTC 75.0% ▼

Duration: 6h 32m
Radius: 37 meters
Data Points: 41 AIS positions
Centroid: 40.9569, 28.7433
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 37,
    "duration_minutes": 392.8999999999999772626324556767940521240234375,
    "points": 41,
    "centroid": {
        "lat": 40.9569137853658418180202716030180454254150390625,
        "lon": 28.7432686585365928522151079960167407989501953125
    },
    "bbox": {
        "min_lat": 40.9566317000000026382622309029102325439453125,
        "min_lon": 28.743068300000000903082764125429093837738037109375,
        "max_lat": 40.957148300000000062937033362686634063720703125,
        "max_lon": 28.7435033000000004221874405629932880401611328125
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts🛰️✗ Bosphorus/Dardanelles Approach

Jul 19, 2026 11:02 UTC 75/100 ▼

Vessel A: IMO 9221803 (YARA J) COMOROS

Vessel B: IMO 9359569 (SAMANYOLU) PALAU

Minimum Distance: 445 meters
Average Distance: 462 meters
Duration: 5h 11m
Period: 2026-07-19T11:02:03+00:00 to 2026-07-19T16:14:00+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.1 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 445m, avg 462m) for 312 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 445m, avg 462m
Duration	25/25	Duration 312 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±10m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-19T17:15:01.607519+00:00

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "vessel_b": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "min_distance_m": 445.1000000000000227373675443232059478759765625,
    "avg_distance_m": 462.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 10.0999999999999996447286321199499070644378662109375,
    "duration_minutes": 311.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 18717,
    "speed_a_avg": 0.13000000000000000444089209850062616169452667236328125,
    "speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0.14000000000000001332267629550187848508358001708984375,
    "speed_b_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.13000000000000000444089209850062616169452667236328125,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0.14000000000000001332267629550187848508358001708984375,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        }
    },
    "time_window": {
        "start": "2026-07-19T11:02:03+00:00",
        "end": "2026-07-19T16:14:00+00:00"
    },
    "points_count": {
        "vessel_a": 24,
        "vessel_b": 24
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 445m, avg 462m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 312 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b110m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 445m, avg 462m) for 312 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.95873590000000064037521951831877231597900390625,
            "lon": 28.744280100000000999216354102827608585357666015625
        },
        "time_window": {
            "start_ts": "2026-07-19T11:02:03+00:00",
            "end_ts": "2026-07-19T16:14:00+00:00"
        },
        "searched_at": "2026-07-19T17:15:01.607519+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 11:02 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 38m
Data Points: 37 AIS positions
Period: 2026-07-19T11:50:04+00:00 to 2026-07-19T18:29:01+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 398.8999999999999772626324556767940521240234375,
    "points_in_zone": 37,
    "first_point": {
        "ts": "2026-07-19T11:50:04+00:00",
        "lat": 40.9566999999999978854248183779418468475341796875,
        "lon": 28.743504999999998972270986996591091156005859375
    },
    "last_point": {
        "ts": "2026-07-19T18:29:01+00:00",
        "lat": 40.9570149999999983947418513707816600799560546875,
        "lon": 28.7432400000000001227817847393453121185302734375
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 11:02 UTC 75.0% ▼

Duration: 6h 38m
Radius: 36 meters
Data Points: 37 AIS positions
Centroid: 40.9569, 28.7433
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 36,
    "duration_minutes": 398.8999999999999772626324556767940521240234375,
    "points": 37,
    "centroid": {
        "lat": 40.9568613999999939778717816807329654693603515625,
        "lon": 28.743312162162165890322285122238099575042724609375
    },
    "bbox": {
        "min_lat": 40.9566317000000026382622309029102325439453125,
        "min_lon": 28.743068300000000903082764125429093837738037109375,
        "max_lat": 40.957148300000000062937033362686634063720703125,
        "max_lon": 28.743559999999998666453393525443971157073974609375
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts Bosphorus/Dardanelles Approach

Jul 19, 2026 10:43 UTC 75/100 ▼

Vessel A: IMO 9221803 (YARA J) COMOROS

Vessel B: IMO 9359569 (SAMANYOLU) PALAU

Minimum Distance: 445 meters
Average Distance: 464 meters
Duration: 5h 24m
Period: 2026-07-19T10:43:57+00:00 to 2026-07-19T16:08:02+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.1 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 445m, avg 464m) for 324 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 445m, avg 464m
Duration	25/25	Duration 324 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±11m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "vessel_b": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "min_distance_m": 445.1000000000000227373675443232059478759765625,
    "avg_distance_m": 463.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 11.199999999999999289457264239899814128875732421875,
    "duration_minutes": 324.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 19445,
    "speed_a_avg": 0.13000000000000000444089209850062616169452667236328125,
    "speed_a_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0.13000000000000000444089209850062616169452667236328125,
    "speed_b_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.13000000000000000444089209850062616169452667236328125,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0.13000000000000000444089209850062616169452667236328125,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        }
    },
    "time_window": {
        "start": "2026-07-19T10:43:57+00:00",
        "end": "2026-07-19T16:08:02+00:00"
    },
    "points_count": {
        "vessel_a": 25,
        "vessel_b": 25
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 445m, avg 464m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 324 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b111m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 445m, avg 464m) for 324 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 10:17 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 33m
Data Points: 33 AIS positions
Period: 2026-07-19T10:43:57+00:00 to 2026-07-19T17:17:02+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 393.1000000000000227373675443232059478759765625,
    "points_in_zone": 33,
    "first_point": {
        "ts": "2026-07-19T10:43:57+00:00",
        "lat": 40.9565367000000009056748240254819393157958984375,
        "lon": 28.743854999999999932924765744246542453765869140625
    },
    "last_point": {
        "ts": "2026-07-19T17:17:02+00:00",
        "lat": 40.95695669999999921628841548226773738861083984375,
        "lon": 28.74313829999999825304257683455944061279296875
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 10:17 UTC 75.0% ▼

Duration: 6h 33m
Radius: 48 meters
Data Points: 33 AIS positions
Centroid: 40.9568, 28.7434
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 48.10000000000000142108547152020037174224853515625,
    "duration_minutes": 393.1000000000000227373675443232059478759765625,
    "points": 33,
    "centroid": {
        "lat": 40.95677753030302170600407407619059085845947265625,
        "lon": 28.7434091878787825180552317760884761810302734375
    },
    "bbox": {
        "min_lat": 40.9565367000000009056748240254819393157958984375,
        "min_lon": 28.743113300000000975842340267263352870941162109375,
        "max_lat": 40.957148300000000062937033362686634063720703125,
        "max_lon": 28.743854999999999932924765744246542453765869140625
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts Bosphorus/Dardanelles Approach

Jul 19, 2026 09:41 UTC 75/100 ▼

Vessel A: IMO 9359569 (SAMANYOLU) PALAU

Vessel B: IMO 9221803 (YARA J) COMOROS

Minimum Distance: 417 meters
Average Distance: 463 meters
Duration: 2h 44m
Period: 2026-07-19T09:20:00+00:00 to 2026-07-19T12:04:50+00:00
Vessel A Avg Speed: 0.2 knots
Vessel B Avg Speed: 0.2 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 417m, avg 463m) for 165 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 417m, avg 463m
Duration	25/25	Duration 165 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±16m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "vessel_b": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "min_distance_m": 417.3999999999999772626324556767940521240234375,
    "avg_distance_m": 463,
    "distance_consistency_m": 15.699999999999999289457264239899814128875732421875,
    "duration_minutes": 164.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 9890,
    "speed_a_avg": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_a_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0.179999999999999993338661852249060757458209991455078125,
    "speed_b_std": 0.14000000000000001332267629550187848508358001708984375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1600000000000000033306690738754696212708950042724609375,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.179999999999999993338661852249060757458209991455078125,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-07-19T09:20:00+00:00",
        "end": "2026-07-19T12:04:50+00:00"
    },
    "points_count": {
        "vessel_a": 17,
        "vessel_b": 17
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 417m, avg 463m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 165 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very 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: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 417m, avg 463m) for 165 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 09:05 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 32m
Data Points: 35 AIS positions
Period: 2026-07-19T09:41:04+00:00 to 2026-07-19T16:14:00+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 392.8999999999999772626324556767940521240234375,
    "points_in_zone": 35,
    "first_point": {
        "ts": "2026-07-19T09:41:04+00:00",
        "lat": 40.9575583000000023048414732329547405242919921875,
        "lon": 28.743191700000000565751179237850010395050048828125
    },
    "last_point": {
        "ts": "2026-07-19T16:14:00+00:00",
        "lat": 40.9566317000000026382622309029102325439453125,
        "lon": 28.7435033000000004221874405629932880401611328125
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 09:05 UTC 75.0% ▼

Duration: 6h 32m
Radius: 88 meters
Data Points: 35 AIS positions
Centroid: 40.9568, 28.7435
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 88.2000000000000028421709430404007434844970703125,
    "duration_minutes": 392.8999999999999772626324556767940521240234375,
    "points": 35,
    "centroid": {
        "lat": 40.95678885714286110442117205820977687835693359375,
        "lon": 28.743451951428571788937915698625147342681884765625
    },
    "bbox": {
        "min_lat": 40.9564333000000004858520696870982646942138671875,
        "min_lon": 28.743026700000001483203959651291370391845703125,
        "max_lat": 40.9575583000000023048414732329547405242919921875,
        "max_lon": 28.74392999999999886995283304713666439056396484375
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 08:23 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 36m
Data Points: 37 AIS positions
Period: 2026-07-19T08:50:03+00:00 to 2026-07-19T15:26:06+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 396.1000000000000227373675443232059478759765625,
    "points_in_zone": 37,
    "first_point": {
        "ts": "2026-07-19T08:50:03+00:00",
        "lat": 40.9581467000000003508830559439957141876220703125,
        "lon": 28.743308299999998922658051014877855777740478515625
    },
    "last_point": {
        "ts": "2026-07-19T15:26:06+00:00",
        "lat": 40.9566549999999978126652422361075878143310546875,
        "lon": 28.743461700000001002308636088855564594268798828125
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 08:23 UTC 75.0% ▼

Duration: 6h 36m
Radius: 136 meters
Data Points: 37 AIS positions
Centroid: 40.9570, 28.7434
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 136.099999999999994315658113919198513031005859375,
    "duration_minutes": 396.1000000000000227373675443232059478759765625,
    "points": 37,
    "centroid": {
        "lat": 40.95704423243243041952155181206762790679931640625,
        "lon": 28.743414229729733477824993315152823925018310546875
    },
    "bbox": {
        "min_lat": 40.9564333000000004858520696870982646942138671875,
        "min_lon": 28.743026700000001483203959651291370391845703125,
        "max_lat": 40.958269999999998844941728748381137847900390625,
        "max_lon": 28.74392999999999886995283304713666439056396484375
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts Bosphorus/Dardanelles Approach

Jul 19, 2026 08:15 UTC 75/100 ▼

Vessel A: IMO 9359569 (SAMANYOLU) PALAU

Vessel B: IMO 9221803 (YARA J) COMOROS

Minimum Distance: 417 meters
Average Distance: 460 meters
Duration: 3h 49m
Period: 2026-07-19T08:15:00+00:00 to 2026-07-19T12:04:50+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.2 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 417m, avg 460m) for 230 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 417m, avg 460m
Duration	25/25	Duration 230 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±17m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "vessel_b": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "min_distance_m": 417.3999999999999772626324556767940521240234375,
    "avg_distance_m": 459.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 16.60000000000000142108547152020037174224853515625,
    "duration_minutes": 229.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 13790,
    "speed_a_avg": 0.14000000000000001332267629550187848508358001708984375,
    "speed_a_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_b_avg": 0.179999999999999993338661852249060757458209991455078125,
    "speed_b_std": 0.14000000000000001332267629550187848508358001708984375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.14000000000000001332267629550187848508358001708984375,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.179999999999999993338661852249060757458209991455078125,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-07-19T08:15:00+00:00",
        "end": "2026-07-19T12:04:50+00:00"
    },
    "points_count": {
        "vessel_a": 21,
        "vessel_b": 21
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 417m, avg 460m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 230 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b117m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 417m, avg 460m) for 230 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts🛰️✗ Bosphorus/Dardanelles Approach

Jul 19, 2026 07:01 UTC 65/100 ▼

Vessel A: IMO 9221803 (YARA J) COMOROS

Vessel B: IMO 9359569 (SAMANYOLU) PALAU

Minimum Distance: 423 meters
Average Distance: 433 meters
Duration: 1h 21m
Period: 2026-07-19T07:01:56+00:00 to 2026-07-19T08:23:03+00:00
Vessel A Avg Speed: 0.2 knots
Vessel B Avg Speed: 0.0 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 423m, avg 433m) for 81 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 423m, avg 433m
Duration	15/25	Duration 81 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±10m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-19T13:30:02.178143+00:00

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "vessel_b": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "min_distance_m": 422.8999999999999772626324556767940521240234375,
    "avg_distance_m": 433.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 9.699999999999999289457264239899814128875732421875,
    "duration_minutes": 81.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 4867,
    "speed_a_avg": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_a_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1600000000000000033306690738754696212708950042724609375,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-19T07:01:56+00:00",
        "end": "2026-07-19T08:23:03+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 423m, avg 433m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 81 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b110m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 423m, avg 433m) for 81 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.95989519999999828314685146324336528778076171875,
            "lon": 28.744064900000001472335497965104877948760986328125
        },
        "time_window": {
            "start_ts": "2026-07-19T07:01:56+00:00",
            "end_ts": "2026-07-19T08:23:03+00:00"
        },
        "searched_at": "2026-07-19T13:30:02.178143+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 07:01 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 35m
Data Points: 42 AIS positions
Period: 2026-07-19T07:11:00+00:00 to 2026-07-19T13:46:57+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 395.8999999999999772626324556767940521240234375,
    "points_in_zone": 42,
    "first_point": {
        "ts": "2026-07-19T07:11:00+00:00",
        "lat": 40.95797830000000061545506468974053859710693359375,
        "lon": 28.743158300000001048601916409097611904144287109375
    },
    "last_point": {
        "ts": "2026-07-19T13:46:57+00:00",
        "lat": 40.957009999999996807673596777021884918212890625,
        "lon": 28.743126700000001250145942321978509426116943359375
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 07:01 UTC 75.0% ▼

Duration: 6h 35m
Radius: 108 meters
Data Points: 42 AIS positions
Centroid: 40.9573, 28.7434
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 108.2000000000000028421709430404007434844970703125,
    "duration_minutes": 395.8999999999999772626324556767940521240234375,
    "points": 42,
    "centroid": {
        "lat": 40.95729574999999300644049071706831455230712890625,
        "lon": 28.74337705952380161988912732340395450592041015625
    },
    "bbox": {
        "min_lat": 40.9564333000000004858520696870982646942138671875,
        "min_lon": 28.743026700000001483203959651291370391845703125,
        "max_lat": 40.958269999999998844941728748381137847900390625,
        "max_lon": 28.74392999999999886995283304713666439056396484375
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts Bosphorus/Dardanelles Approach

Jul 19, 2026 06:37 UTC 60/100 ▼

Vessel A: IMO 9359569 (SAMANYOLU) PALAU

Vessel B: IMO 9221803 (YARA J) COMOROS

Minimum Distance: 422 meters
Average Distance: 433 meters
Duration: 56 minutes
Period: 2026-07-19T06:37:07+00:00 to 2026-07-19T07:33:04+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.1 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 60/100

Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 422m, avg 433m) for 56 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 422m, avg 433m
Duration	10/25	Duration 56 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±9m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "vessel_b": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "min_distance_m": 422,
    "avg_distance_m": 433.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 9.300000000000000710542735760100185871124267578125,
    "duration_minutes": 56,
    "overlap_duration_s": 3357,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-19T06:37:07+00:00",
        "end": "2026-07-19T07:33:04+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 60,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 422m, avg 433m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 56 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b19m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 422m, avg 433m) for 56 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 06:05 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 20m
Data Points: 43 AIS positions
Period: 2026-07-19T06:47:05+00:00 to 2026-07-19T13:07:57+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 380.8999999999999772626324556767940521240234375,
    "points_in_zone": 43,
    "first_point": {
        "ts": "2026-07-19T06:47:05+00:00",
        "lat": 40.9579633000000029596776585094630718231201171875,
        "lon": 28.7432017000000001871740096248686313629150390625
    },
    "last_point": {
        "ts": "2026-07-19T13:07:57+00:00",
        "lat": 40.956805000000002792148734442889690399169921875,
        "lon": 28.743414999999998826751834712922573089599609375
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 06:05 UTC 75.0% ▼

Duration: 6h 20m
Radius: 112 meters
Data Points: 43 AIS positions
Centroid: 40.9574, 28.7434
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 112.099999999999994315658113919198513031005859375,
    "duration_minutes": 380.8999999999999772626324556767940521240234375,
    "points": 43,
    "centroid": {
        "lat": 40.95735883255813547521029249764978885650634765625,
        "lon": 28.74337247674417739062846521846950054168701171875
    },
    "bbox": {
        "min_lat": 40.9564333000000004858520696870982646942138671875,
        "min_lon": 28.743026700000001483203959651291370391845703125,
        "max_lat": 40.958269999999998844941728748381137847900390625,
        "max_lon": 28.74392999999999886995283304713666439056396484375
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts Bosphorus/Dardanelles Approach

Jul 19, 2026 05:37 UTC 75/100 ▼

Vessel A: IMO 9221803 (YARA J) COMOROS

Vessel B: IMO 9359569 (SAMANYOLU) PALAU

Minimum Distance: 415 meters
Average Distance: 430 meters
Duration: 3 hours
Period: 2026-07-19T05:22:58+00:00 to 2026-07-19T08:23:03+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.0 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 415m, avg 430m) for 180 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 415m, avg 430m
Duration	25/25	Duration 180 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±9m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "vessel_b": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "min_distance_m": 414.69999999999998863131622783839702606201171875,
    "avg_distance_m": 430,
    "distance_consistency_m": 9.300000000000000710542735760100185871124267578125,
    "duration_minutes": 180.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 10805,
    "speed_a_avg": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.11000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-19T05:22:58+00:00",
        "end": "2026-07-19T08:23:03+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 415m, avg 430m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 180 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b19m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 415m, avg 430m) for 180 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 05:10 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 36m
Data Points: 45 AIS positions
Period: 2026-07-19T05:22:58+00:00 to 2026-07-19T11:59:03+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 396.1000000000000227373675443232059478759765625,
    "points_in_zone": 45,
    "first_point": {
        "ts": "2026-07-19T05:22:58+00:00",
        "lat": 40.95793669999999764286258141510188579559326171875,
        "lon": 28.743141699999998905923348502255976200103759765625
    },
    "last_point": {
        "ts": "2026-07-19T11:59:03+00:00",
        "lat": 40.95698329999999742767613497562706470489501953125,
        "lon": 28.7432783000000000583895598538219928741455078125
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 05:10 UTC 75.0% ▼

Duration: 6h 36m
Radius: 127 meters
Data Points: 45 AIS positions
Centroid: 40.9575, 28.7433
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 126.5,
    "duration_minutes": 396.1000000000000227373675443232059478759765625,
    "points": 45,
    "centroid": {
        "lat": 40.9574895888888903527913498692214488983154296875,
        "lon": 28.743339331111105394711557892151176929473876953125
    },
    "bbox": {
        "min_lat": 40.9564333000000004858520696870982646942138671875,
        "min_lon": 28.743026700000001483203959651291370391845703125,
        "max_lat": 40.958269999999998844941728748381137847900390625,
        "max_lon": 28.74392999999999886995283304713666439056396484375
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 04:28 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 18m
Data Points: 39 AIS positions
Period: 2026-07-19T04:28:55+00:00 to 2026-07-19T10:47:02+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 378.1000000000000227373675443232059478759765625,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-07-19T04:28:55+00:00",
        "lat": 40.95759170000000182199073606170713901519775390625,
        "lon": 28.74315169999999852734617888927459716796875
    },
    "last_point": {
        "ts": "2026-07-19T10:47:02+00:00",
        "lat": 40.95664169999999870697138248942792415618896484375,
        "lon": 28.743553299999998529301592498086392879486083984375
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 04:28 UTC 75.0% ▼

Duration: 6h 18m
Radius: 145 meters
Data Points: 39 AIS positions
Centroid: 40.9577, 28.7433
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 144.5,
    "duration_minutes": 378.1000000000000227373675443232059478759765625,
    "points": 39,
    "centroid": {
        "lat": 40.95765392820512573734959005378186702728271484375,
        "lon": 28.743307479487175015719913062639534473419189453125
    },
    "bbox": {
        "min_lat": 40.9564333000000004858520696870982646942138671875,
        "min_lon": 28.743026700000001483203959651291370391845703125,
        "max_lat": 40.958269999999998844941728748381137847900390625,
        "max_lon": 28.74392999999999886995283304713666439056396484375
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts Bosphorus/Dardanelles Approach

Jul 19, 2026 03:25 UTC 75/100 ▼

Vessel A: IMO 9221803 (YARA J) COMOROS

Vessel B: IMO 9359569 (SAMANYOLU) PALAU

Minimum Distance: 415 meters
Average Distance: 437 meters
Duration: 4h 57m
Period: 2026-07-19T03:25:59+00:00 to 2026-07-19T08:23:03+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.0 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 415m, avg 437m) for 297 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 415m, avg 437m
Duration	25/25	Duration 297 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±14m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "vessel_b": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "min_distance_m": 414.69999999999998863131622783839702606201171875,
    "avg_distance_m": 436.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 13.5,
    "duration_minutes": 297.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 17824,
    "speed_a_avg": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.11000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-19T03:25:59+00:00",
        "end": "2026-07-19T08:23:03+00:00"
    },
    "points_count": {
        "vessel_a": 22,
        "vessel_b": 22
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 415m, avg 437m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 297 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b114m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 415m, avg 437m) for 297 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 03:01 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 38m
Data Points: 37 AIS positions
Period: 2026-07-19T03:50:04+00:00 to 2026-07-19T10:28:59+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 398.8999999999999772626324556767940521240234375,
    "points_in_zone": 37,
    "first_point": {
        "ts": "2026-07-19T03:50:04+00:00",
        "lat": 40.95703329999999908750396571122109889984130859375,
        "lon": 28.7432450000000017098500393331050872802734375
    },
    "last_point": {
        "ts": "2026-07-19T10:28:59+00:00",
        "lat": 40.95665670000000346817614627070724964141845703125,
        "lon": 28.743583300000000946283762459643185138702392578125
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 03:01 UTC 75.0% ▼

Duration: 6h 38m
Radius: 149 meters
Data Points: 37 AIS positions
Centroid: 40.9577, 28.7433
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 148.69999999999998863131622783839702606201171875,
    "duration_minutes": 398.8999999999999772626324556767940521240234375,
    "points": 37,
    "centroid": {
        "lat": 40.957742875675677396429819054901599884033203125,
        "lon": 28.74326306756756110871720011346042156219482421875
    },
    "bbox": {
        "min_lat": 40.95650330000000138852556119672954082489013671875,
        "min_lon": 28.743026700000001483203959651291370391845703125,
        "max_lat": 40.958269999999998844941728748381137847900390625,
        "max_lon": 28.74392999999999886995283304713666439056396484375
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts Bosphorus/Dardanelles Approach

Jul 19, 2026 02:19 UTC 75/100 ▼

Vessel A: IMO 9359569 (SAMANYOLU) PALAU

Vessel B: IMO 9221803 (YARA J) COMOROS

Minimum Distance: 428 meters
Average Distance: 446 meters
Duration: 2h 8m
Period: 2026-07-19T02:19:13+00:00 to 2026-07-19T04:27:11+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.1 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 428m, avg 446m) for 128 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 428m, avg 446m
Duration	25/25	Duration 128 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±11m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "vessel_b": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "min_distance_m": 428.30000000000001136868377216160297393798828125,
    "avg_distance_m": 445.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 11.300000000000000710542735760100185871124267578125,
    "duration_minutes": 128,
    "overlap_duration_s": 7678,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.11999999999999999555910790149937383830547332763671875,
    "speed_b_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.11999999999999999555910790149937383830547332763671875,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        }
    },
    "time_window": {
        "start": "2026-07-19T02:19:13+00:00",
        "end": "2026-07-19T04:27:11+00:00"
    },
    "points_count": {
        "vessel_a": 10,
        "vessel_b": 10
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 428m, avg 446m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 128 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b111m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 428m, avg 446m) for 128 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 02:13 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 33m
Data Points: 34 AIS positions
Period: 2026-07-19T02:56:00+00:00 to 2026-07-19T09:29:02+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 393,
    "points_in_zone": 34,
    "first_point": {
        "ts": "2026-07-19T02:56:00+00:00",
        "lat": 40.95706500000000005456968210637569427490234375,
        "lon": 28.74327329999999847132130526006221771240234375
    },
    "last_point": {
        "ts": "2026-07-19T09:29:02+00:00",
        "lat": 40.95775499999999880174073041416704654693603515625,
        "lon": 28.743198299999999534293237957172095775604248046875
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 02:13 UTC 75.0% ▼

Duration: 6h 33m
Radius: 97 meters
Data Points: 34 AIS positions
Centroid: 40.9578, 28.7432
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 96.5,
    "duration_minutes": 393,
    "points": 34,
    "centroid": {
        "lat": 40.95777479705882484495305106975138187408447265625,
        "lon": 28.743242064705878391350779565982520580291748046875
    },
    "bbox": {
        "min_lat": 40.95691670000000073059709393419325351715087890625,
        "min_lon": 28.743141699999998905923348502255976200103759765625,
        "max_lat": 40.958269999999998844941728748381137847900390625,
        "max_lon": 28.74343999999999965666575008071959018707275390625
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts🛰️✗ Bosphorus/Dardanelles Approach

Jul 19, 2026 01:04 UTC 70/100 ▼

Vessel A: IMO 9221803 (YARA J) COMOROS

Vessel B: IMO 9359569 (SAMANYOLU) PALAU

Minimum Distance: 434 meters
Average Distance: 446 meters
Duration: 1h 36m
Period: 2026-07-19T01:04:56+00:00 to 2026-07-19T02:40:55+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.0 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 434m, avg 446m) for 96 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 434m, avg 446m
Duration	20/25	Duration 96 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±8m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-19T07:30:02.238171+00:00

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "vessel_b": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "min_distance_m": 434.30000000000001136868377216160297393798828125,
    "avg_distance_m": 446.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 7.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 96,
    "overlap_duration_s": 5759,
    "speed_a_avg": 0.11999999999999999555910790149937383830547332763671875,
    "speed_a_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.11999999999999999555910790149937383830547332763671875,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-19T01:04:56+00:00",
        "end": "2026-07-19T02:40:55+00:00"
    },
    "points_count": {
        "vessel_a": 10,
        "vessel_b": 10
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 434m, avg 446m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 96 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b18m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 434m, avg 446m) for 96 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.95899969999999967740222928114235401153564453125,
            "lon": 28.744175500000000766931407270021736621856689453125
        },
        "time_window": {
            "start_ts": "2026-07-19T01:04:56+00:00",
            "end_ts": "2026-07-19T02:40:55+00:00"
        },
        "searched_at": "2026-07-19T07:30:02.238171+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 01:04 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 24m
Data Points: 34 AIS positions
Period: 2026-07-19T01:04:56+00:00 to 2026-07-19T07:29:00+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 384.1000000000000227373675443232059478759765625,
    "points_in_zone": 34,
    "first_point": {
        "ts": "2026-07-19T01:04:56+00:00",
        "lat": 40.95698829999999901474438956938683986663818359375,
        "lon": 28.743359999999999132569428184069693088531494140625
    },
    "last_point": {
        "ts": "2026-07-19T07:29:00+00:00",
        "lat": 40.957999999999998408384271897375583648681640625,
        "lon": 28.743161700000001701482688076794147491455078125
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 01:04 UTC 75.0% ▼

Duration: 6h 24m
Radius: 70 meters
Data Points: 34 AIS positions
Centroid: 40.9575, 28.7432
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 70,
    "duration_minutes": 384.1000000000000227373675443232059478759765625,
    "points": 34,
    "centroid": {
        "lat": 40.957488132352949605774483643472194671630859375,
        "lon": 28.74323530294117290395661257207393646240234375
    },
    "bbox": {
        "min_lat": 40.95691670000000073059709393419325351715087890625,
        "min_lon": 28.743141699999998905923348502255976200103759765625,
        "max_lat": 40.95811830000000242080204770900309085845947265625,
        "max_lon": 28.743424999999998448174665099941194057464599609375
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 19, 2026 00:04 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 36m
Data Points: 35 AIS positions
Period: 2026-07-19T00:52:57+00:00 to 2026-07-19T07:29:00+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 396.1000000000000227373675443232059478759765625,
    "points_in_zone": 35,
    "first_point": {
        "ts": "2026-07-19T00:52:57+00:00",
        "lat": 40.95700500000000232603269978426396846771240234375,
        "lon": 28.743379999999998375415088958106935024261474609375
    },
    "last_point": {
        "ts": "2026-07-19T07:29:00+00:00",
        "lat": 40.957999999999998408384271897375583648681640625,
        "lon": 28.743161700000001701482688076794147491455078125
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 19, 2026 00:04 UTC 75.0% ▼

Duration: 6h 36m
Radius: 72 meters
Data Points: 35 AIS positions
Centroid: 40.9575, 28.7432
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 71.599999999999994315658113919198513031005859375,
    "duration_minutes": 396.1000000000000227373675443232059478759765625,
    "points": 35,
    "centroid": {
        "lat": 40.95747432857142911188930156640708446502685546875,
        "lon": 28.743239437142850789541625999845564365386962890625
    },
    "bbox": {
        "min_lat": 40.95691670000000073059709393419325351715087890625,
        "min_lon": 28.743141699999998905923348502255976200103759765625,
        "max_lat": 40.95811830000000242080204770900309085845947265625,
        "max_lon": 28.743424999999998448174665099941194057464599609375
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts Bosphorus/Dardanelles Approach

Jul 19, 2026 00:01 UTC 75/100 ▼

Vessel A: IMO 9221803 (YARA J) COMOROS

Vessel B: IMO 9359569 (SAMANYOLU) PALAU

Minimum Distance: 434 meters
Average Distance: 451 meters
Duration: 2h 36m
Period: 2026-07-19T00:04:56+00:00 to 2026-07-19T02:40:55+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.0 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 434m, avg 451m) for 156 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 434m, avg 451m
Duration	25/25	Duration 156 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±9m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "vessel_b": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "min_distance_m": 434.30000000000001136868377216160297393798828125,
    "avg_distance_m": 451.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 9.199999999999999289457264239899814128875732421875,
    "duration_minutes": 156,
    "overlap_duration_s": 9359,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-19T00:04:56+00:00",
        "end": "2026-07-19T02:40:55+00:00"
    },
    "points_count": {
        "vessel_a": 16,
        "vessel_b": 16
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 434m, avg 451m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 156 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b19m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 434m, avg 451m) for 156 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts Bosphorus/Dardanelles Approach

Jul 18, 2026 23:58 UTC 75/100 ▼

Vessel A: IMO 9221803 (YARA J) COMOROS

Vessel B: IMO 9359569 (SAMANYOLU) PALAU

Minimum Distance: 434 meters
Average Distance: 452 meters
Duration: 2h 42m
Period: 2026-07-18T23:58:56+00:00 to 2026-07-19T02:40:55+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.0 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 434m, avg 452m) for 162 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 434m, avg 452m
Duration	25/25	Duration 162 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±9m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "vessel_b": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "min_distance_m": 434.30000000000001136868377216160297393798828125,
    "avg_distance_m": 451.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 9,
    "duration_minutes": 162,
    "overlap_duration_s": 9719,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-18T23:58:56+00:00",
        "end": "2026-07-19T02:40:55+00:00"
    },
    "points_count": {
        "vessel_a": 17,
        "vessel_b": 17
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 434m, avg 452m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 162 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b19m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 434m, avg 452m) for 162 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 18, 2026 23:16 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 24m
Data Points: 36 AIS positions
Period: 2026-07-18T23:40:57+00:00 to 2026-07-19T06:05:04+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 384.1000000000000227373675443232059478759765625,
    "points_in_zone": 36,
    "first_point": {
        "ts": "2026-07-18T23:40:57+00:00",
        "lat": 40.957099999999996953192749060690402984619140625,
        "lon": 28.74325329999999922847564448602497577667236328125
    },
    "last_point": {
        "ts": "2026-07-19T06:05:04+00:00",
        "lat": 40.9579499999999967485564411617815494537353515625,
        "lon": 28.743171700000001322905518463812768459320068359375
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 18, 2026 23:16 UTC 75.0% ▼

Duration: 6h 24m
Radius: 84 meters
Data Points: 36 AIS positions
Centroid: 40.9573, 28.7433
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 84.099999999999994315658113919198513031005859375,
    "duration_minutes": 384.1000000000000227373675443232059478759765625,
    "points": 36,
    "centroid": {
        "lat": 40.957253005555543268201290629804134368896484375,
        "lon": 28.743254680555555324872329947538673877716064453125
    },
    "bbox": {
        "min_lat": 40.95691670000000073059709393419325351715087890625,
        "min_lon": 28.743141699999998905923348502255976200103759765625,
        "max_lat": 40.9580083000000030324372346512973308563232421875,
        "max_lon": 28.743424999999998448174665099941194057464599609375
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 18, 2026 22:13 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 24m
Data Points: 36 AIS positions
Period: 2026-07-18T22:58:53+00:00 to 2026-07-19T05:22:58+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 384.1000000000000227373675443232059478759765625,
    "points_in_zone": 36,
    "first_point": {
        "ts": "2026-07-18T22:58:53+00:00",
        "lat": 40.95736169999999987112460075877606868743896484375,
        "lon": 28.74313169999999928450051811523735523223876953125
    },
    "last_point": {
        "ts": "2026-07-19T05:22:58+00:00",
        "lat": 40.95793669999999764286258141510188579559326171875,
        "lon": 28.743141699999998905923348502255976200103759765625
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 18, 2026 22:13 UTC 75.0% ▼

Duration: 6h 24m
Radius: 87 meters
Data Points: 36 AIS positions
Centroid: 40.9572, 28.7432
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 86.5,
    "duration_minutes": 384.1000000000000227373675443232059478759765625,
    "points": 36,
    "centroid": {
        "lat": 40.95716166388887558014175738207995891571044921875,
        "lon": 28.7432473666666652434287243522703647613525390625
    },
    "bbox": {
        "min_lat": 40.95691670000000073059709393419325351715087890625,
        "min_lon": 28.743068300000000903082764125429093837738037109375,
        "max_lat": 40.95793669999999764286258141510188579559326171875,
        "max_lon": 28.743424999999998448174665099941194057464599609375
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts Bosphorus/Dardanelles Approach

Jul 18, 2026 22:09 UTC 75/100 ▼

Vessel A: IMO 9359569 (SAMANYOLU) PALAU

Vessel B: IMO 9221803 (YARA J) COMOROS

Minimum Distance: 433 meters
Average Distance: 451 meters
Duration: 3h 39m
Period: 2026-07-18T22:09:19+00:00 to 2026-07-19T01:49:14+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.1 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 433m, avg 451m) for 220 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 433m, avg 451m
Duration	25/25	Duration 220 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±8m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "vessel_b": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "min_distance_m": 433.19999999999998863131622783839702606201171875,
    "avg_distance_m": 450.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 7.5,
    "duration_minutes": 219.900000000000005684341886080801486968994140625,
    "overlap_duration_s": 13195,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.13000000000000000444089209850062616169452667236328125,
    "speed_b_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.13000000000000000444089209850062616169452667236328125,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-07-18T22:09:19+00:00",
        "end": "2026-07-19T01:49:14+00:00"
    },
    "points_count": {
        "vessel_a": 18,
        "vessel_b": 18
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 433m, avg 451m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 220 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b18m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 433m, avg 451m) for 220 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}

Methodology: 2026.01.18

Sts Bosphorus/Dardanelles Approach

Jul 18, 2026 21:04 UTC 75/100 ▼

Vessel A: IMO 9221803 (YARA J) COMOROS

Vessel B: IMO 9359569 (SAMANYOLU) PALAU

Minimum Distance: 432 meters
Average Distance: 449 meters
Duration: 2h 36m
Period: 2026-07-18T21:04:56+00:00 to 2026-07-18T23:40:57+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.0 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 432m, avg 449m) for 156 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 432m, avg 449m
Duration	25/25	Duration 156 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±10m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "vessel_b": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "min_distance_m": 431.8999999999999772626324556767940521240234375,
    "avg_distance_m": 449.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 9.800000000000000710542735760100185871124267578125,
    "duration_minutes": 156,
    "overlap_duration_s": 9361,
    "speed_a_avg": 0.14000000000000001332267629550187848508358001708984375,
    "speed_a_std": 0.14000000000000001332267629550187848508358001708984375,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.14000000000000001332267629550187848508358001708984375,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-18T21:04:56+00:00",
        "end": "2026-07-18T23:40:57+00:00"
    },
    "points_count": {
        "vessel_a": 14,
        "vessel_b": 14
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 432m, avg 449m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 156 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b110m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 432m, avg 449m) for 156 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 18, 2026 21:04 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 6m
Data Points: 39 AIS positions
Period: 2026-07-18T21:49:59+00:00 to 2026-07-19T03:56:04+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 366.1000000000000227373675443232059478759765625,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-07-18T21:49:59+00:00",
        "lat": 40.95730669999999662422851542942225933074951171875,
        "lon": 28.7430599999999998317434801720082759857177734375
    },
    "last_point": {
        "ts": "2026-07-19T03:56:04+00:00",
        "lat": 40.9571832999999969615601003170013427734375,
        "lon": 28.743236700000000638510755379684269428253173828125
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 18, 2026 21:04 UTC 75.0% ▼

Duration: 6h 6m
Radius: 33 meters
Data Points: 39 AIS positions
Centroid: 40.9571, 28.7432
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 32.7000000000000028421709430404007434844970703125,
    "duration_minutes": 366.1000000000000227373675443232059478759765625,
    "points": 39,
    "centroid": {
        "lat": 40.95714597948717283770747599191963672637939453125,
        "lon": 28.743233207692302499935976811684668064117431640625
    },
    "bbox": {
        "min_lat": 40.95691670000000073059709393419325351715087890625,
        "min_lon": 28.7430599999999998317434801720082759857177734375,
        "max_lat": 40.95742500000000063664629124104976654052734375,
        "max_lon": 28.743424999999998448174665099941194057464599609375
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 18, 2026 20:34 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 33m
Data Points: 39 AIS positions
Period: 2026-07-18T20:52:53+00:00 to 2026-07-19T03:25:59+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 393.1000000000000227373675443232059478759765625,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-07-18T20:52:53+00:00",
        "lat": 40.95715500000000020008883439004421234130859375,
        "lon": 28.743159999999999598685462842695415019989013671875
    },
    "last_point": {
        "ts": "2026-07-19T03:25:59+00:00",
        "lat": 40.95691670000000073059709393419325351715087890625,
        "lon": 28.743424999999998448174665099941194057464599609375
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 18, 2026 20:34 UTC 75.0% ▼

Duration: 6h 33m
Radius: 32 meters
Data Points: 39 AIS positions
Centroid: 40.9572, 28.7432
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 32.10000000000000142108547152020037174224853515625,
    "duration_minutes": 393.1000000000000227373675443232059478759765625,
    "points": 39,
    "centroid": {
        "lat": 40.9571582897435888526160852052271366119384765625,
        "lon": 28.743216153846159244267255417071282863616943359375
    },
    "bbox": {
        "min_lat": 40.95691670000000073059709393419325351715087890625,
        "min_lon": 28.743054999999998244675225578248500823974609375,
        "max_lat": 40.95742500000000063664629124104976654052734375,
        "max_lon": 28.743424999999998448174665099941194057464599609375
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts Bosphorus/Dardanelles Approach

Jul 18, 2026 20:31 UTC 60/100 ▼

Vessel A: IMO 9359569 (SAMANYOLU) PALAU

Vessel B: IMO 9221803 (YARA J) COMOROS

Minimum Distance: 446 meters
Average Distance: 459 meters
Duration: 48 minutes
Period: 2026-07-18T20:31:16+00:00 to 2026-07-18T21:19:17+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.1 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 60/100

Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 446m, avg 459m) for 48 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 446m, avg 459m
Duration	10/25	Duration 48 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±17m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "vessel_b": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "min_distance_m": 445.69999999999998863131622783839702606201171875,
    "avg_distance_m": 458.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 16.699999999999999289457264239899814128875732421875,
    "duration_minutes": 48,
    "overlap_duration_s": 2881,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.14000000000000001332267629550187848508358001708984375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.14000000000000001332267629550187848508358001708984375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-18T20:31:16+00:00",
        "end": "2026-07-18T21:19:17+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 60,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 446m, avg 459m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 48 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b117m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 446m, avg 459m) for 48 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 18, 2026 19:13 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 36m
Data Points: 38 AIS positions
Period: 2026-07-18T19:52:57+00:00 to 2026-07-19T02:28:59+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 396,
    "points_in_zone": 38,
    "first_point": {
        "ts": "2026-07-18T19:52:57+00:00",
        "lat": 40.95701669999999694482539780437946319580078125,
        "lon": 28.743275000000000574118530494160950183868408203125
    },
    "last_point": {
        "ts": "2026-07-19T02:28:59+00:00",
        "lat": 40.95718500000000261707100435160100460052490234375,
        "lon": 28.74326669999999950277924654074013233184814453125
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 18, 2026 19:13 UTC 75.0% ▼

Duration: 6h 36m
Radius: 31 meters
Data Points: 38 AIS positions
Centroid: 40.9572, 28.7432
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 30.5,
    "duration_minutes": 396,
    "points": 38,
    "centroid": {
        "lat": 40.9571594315789440088337869383394718170166015625,
        "lon": 28.743203334210523536285109003074467182159423828125
    },
    "bbox": {
        "min_lat": 40.95698329999999742767613497562706470489501953125,
        "min_lon": 28.743054999999998244675225578248500823974609375,
        "max_lat": 40.95742500000000063664629124104976654052734375,
        "max_lon": 28.743379999999998375415088958106935024261474609375
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 18, 2026 18:07 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 33m
Data Points: 36 AIS positions
Period: 2026-07-18T18:40:57+00:00 to 2026-07-19T01:13:59+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 393,
    "points_in_zone": 36,
    "first_point": {
        "ts": "2026-07-18T18:40:57+00:00",
        "lat": 40.9570317000000017060301615856587886810302734375,
        "lon": 28.743198299999999534293237957172095775604248046875
    },
    "last_point": {
        "ts": "2026-07-19T01:13:59+00:00",
        "lat": 40.9570633000000015044861356727778911590576171875,
        "lon": 28.74333169999999881838448345661163330078125
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 18, 2026 18:07 UTC 75.0% ▼

Duration: 6h 33m
Radius: 32 meters
Data Points: 36 AIS positions
Centroid: 40.9571, 28.7432
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 32.2000000000000028421709430404007434844970703125,
    "duration_minutes": 393,
    "points": 36,
    "centroid": {
        "lat": 40.95714120555555126657054643146693706512451171875,
        "lon": 28.743193888888885823007512954063713550567626953125
    },
    "bbox": {
        "min_lat": 40.95688169999999672654666937887668609619140625,
        "min_lon": 28.743054999999998244675225578248500823974609375,
        "max_lat": 40.95742500000000063664629124104976654052734375,
        "max_lon": 28.743379999999998375415088958106935024261474609375
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Sts🛰️✗ Bosphorus/Dardanelles Approach

Jul 18, 2026 17:19 UTC 65/100 ▼

Vessel A: IMO 9359569 (SAMANYOLU) PALAU

Vessel B: IMO 9221803 (YARA J) COMOROS

Minimum Distance: 459 meters
Average Distance: 465 meters
Duration: 1 hours
Period: 2026-07-18T17:19:15+00:00 to 2026-07-18T18:19:18+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.1 knots
Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 459m, avg 465m) for 60 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	5/25	Min distance 459m, avg 465m
Duration	15/25	Duration 60 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: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-18T23:45:11.176109+00:00

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 511101642,
        "imo": 9359569,
        "name": "SAMANYOLU",
        "flag": "PALAU"
    },
    "vessel_b": {
        "mmsi": 620800363,
        "imo": 9221803,
        "name": "YARA J",
        "flag": "COMOROS"
    },
    "min_distance_m": 459.1000000000000227373675443232059478759765625,
    "avg_distance_m": 465.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 7,
    "duration_minutes": 60,
    "overlap_duration_s": 3603,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0,
    "speed_b_avg": 0.14000000000000001332267629550187848508358001708984375,
    "speed_b_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.14000000000000001332267629550187848508358001708984375,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        }
    },
    "time_window": {
        "start": "2026-07-18T17:19:15+00:00",
        "end": "2026-07-18T18:19:18+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 459m, avg 465m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 60 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: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 459m, avg 465m) for 60 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.9588810999999992645825841464102268218994140625,
            "lon": 28.7440955000000002428350853733718395233154296875
        },
        "time_window": {
            "start_ts": "2026-07-18T17:19:15+00:00",
            "end_ts": "2026-07-18T18:19:18+00:00"
        },
        "searched_at": "2026-07-18T23:45:11.176109+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 18, 2026 17:04 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 30m
Data Points: 34 AIS positions
Period: 2026-07-18T17:52:53+00:00 to 2026-07-19T00:22:54+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 390,
    "points_in_zone": 34,
    "first_point": {
        "ts": "2026-07-18T17:52:53+00:00",
        "lat": 40.95700670000000087611624621786177158355712890625,
        "lon": 28.743126700000001250145942321978509426116943359375
    },
    "last_point": {
        "ts": "2026-07-19T00:22:54+00:00",
        "lat": 40.95701170000000246318450081162154674530029296875,
        "lon": 28.743294999999999816964191268198192119598388671875
    }
}

Methodology: 2026.01.18

Loiter Bosphorus/Dardanelles Approach

Jul 18, 2026 17:04 UTC 75.0% ▼

Duration: 6h 30m
Radius: 43 meters
Data Points: 34 AIS positions
Centroid: 40.9571, 28.7432
Zone: Bosphorus/Dardanelles Approach

Show Raw Evidence JSON

{
    "radius_m": 43,
    "duration_minutes": 390,
    "points": 34,
    "centroid": {
        "lat": 40.95714152352940828905047965236008167266845703125,
        "lon": 28.743167255882354993445915170013904571533203125
    },
    "bbox": {
        "min_lat": 40.95677330000000182508301804773509502410888671875,
        "min_lon": 28.743054999999998244675225578248500823974609375,
        "max_lat": 40.95742500000000063664629124104976654052734375,
        "max_lon": 28.743326700000000784029907663352787494659423828125
    },
    "zone_id": "osint_bosphorus"
}

Methodology: 2026.01.18

Zone Dwell Bosphorus/Dardanelles Approach

Jul 18, 2026 16:07 UTC 80.0% ▼

Zone: Bosphorus/Dardanelles Approach
Duration: 6h 30m
Data Points: 32 AIS positions
Period: 2026-07-18T16:58:54+00:00 to 2026-07-18T23:28:55+00:00

Show Raw Evidence JSON

{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 390,
    "points_in_zone": 32,
    "first_point": {
        "ts": "2026-07-18T16:58:54+00:00",
        "lat": 40.95669500000000340378392138518393039703369140625,
        "lon": 28.743404999999999205329004325903952121734619140625
    },
    "last_point": {
        "ts": "2026-07-18T23:28:55+00:00",
        "lat": 40.957138299999996888800524175167083740234375,
        "lon": 28.743191700000000565751179237850010395050048828125
    }
}

Methodology: 2026.01.18

Time (UTC)	Lat	Lon	Speed	Course	Zone
Jul 23 02:12	40.9515	28.7514	0.1 kn	109.4°	Bosphorus/Dardanelles Approach
Jul 23 02:09	40.9515	28.7514	0.1 kn	281.7°	Bosphorus/Dardanelles Approach
Jul 23 02:00	40.9516	28.7515	0.0 kn	74.4°	Bosphorus/Dardanelles Approach
Jul 23 01:54	40.9515	28.7515	0.2 kn	193.4°	Bosphorus/Dardanelles Approach
Jul 23 01:51	40.9516	28.7515	0.1 kn	324.5°	Bosphorus/Dardanelles Approach
Jul 23 01:45	40.9515	28.7515	0.1 kn	119.1°	Bosphorus/Dardanelles Approach
Jul 23 01:39	40.9516	28.7515	0.1 kn	300.8°	Bosphorus/Dardanelles Approach
Jul 23 01:36	40.9515	28.7516	0.1 kn	223.7°	Bosphorus/Dardanelles Approach
Jul 23 01:33	40.9516	28.7517	0.1 kn	247.9°	Bosphorus/Dardanelles Approach
Jul 23 01:30	40.9516	28.7517	0.1 kn	294.6°	Bosphorus/Dardanelles Approach
Jul 23 01:27	40.9516	28.7517	0.1 kn	188.1°	Bosphorus/Dardanelles Approach
Jul 23 00:45	40.9516	28.7518	0.2 kn	194.1°	Bosphorus/Dardanelles Approach
Jul 23 00:42	40.9516	28.7519	0.3 kn	180.5°	Bosphorus/Dardanelles Approach
Jul 23 00:15	40.9516	28.7519	0.2 kn	273.9°	Bosphorus/Dardanelles Approach
Jul 23 00:00	40.9516	28.7516	0.2 kn	39.5°	Bosphorus/Dardanelles Approach
Jul 22 23:54	40.9516	28.7513	0.0 kn	164.3°	Bosphorus/Dardanelles Approach
Jul 22 23:48	40.9515	28.7514	0.0 kn	180.5°	Bosphorus/Dardanelles Approach
Jul 22 23:45	40.9515	28.7513	0.2 kn	143.4°	Bosphorus/Dardanelles Approach
Jul 22 23:33	40.9515	28.7511	0.3 kn	56.8°	Bosphorus/Dardanelles Approach
Jul 22 23:30	40.9515	28.7510	0.2 kn	148.3°	Bosphorus/Dardanelles Approach

YARA J

IMO 9221803

Vessel information

Detected Events (100)

Confidence Analysis

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