SEAGAS MAJOR

IMO 9135793

Vessel information

Vessel Name SEAGAS MAJOR
IMO Number 9135793
MMSI 636016188
Vessel Type Tanker - Hazard C (Minor)
Flag 🇱🇷 LIBERIA
Call Sign ELXM8
Length 99 m
Beam 15 m

Detected Events (100)

Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 23:35 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 3h 32m
  • Data Points: 32 AIS positions
  • Period: 2026-06-03T23:35:35+00:00 to 2026-06-04T03:08:28+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 212.900000000000005684341886080801486968994140625,
    "points_in_zone": 32,
    "first_point": {
        "ts": "2026-06-03T23:35:35+00:00",
        "lat": 34.7165116999999980862412485294044017791748046875,
        "lon": 33.35714500000000271029421128332614898681640625
    },
    "last_point": {
        "ts": "2026-06-04T03:08:28+00:00",
        "lat": 34.71693669999999798392309457994997501373291015625,
        "lon": 33.3562050000000027694113668985664844512939453125
    }
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 23:35 UTC 75.0%
  • Duration: 3h 32m
  • Radius: 78 meters
  • Data Points: 32 AIS positions
  • Centroid: 34.7167, 33.3566
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 77.900000000000005684341886080801486968994140625,
    "duration_minutes": 212.900000000000005684341886080801486968994140625,
    "points": 32,
    "centroid": {
        "lat": 34.71671359999999140200088731944561004638671875,
        "lon": 33.3565906718749971560100675560534000396728515625
    },
    "bbox": {
        "min_lat": 34.71649169999999884339558775536715984344482421875,
        "min_lon": 33.3557832999999988032868714071810245513916015625,
        "max_lat": 34.7170167000000020607330952771008014678955078125,
        "max_lon": 33.35732500000000300133251585066318511962890625
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 20:02 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 2h 38m
  • Data Points: 16 AIS positions
  • Period: 2026-06-03T20:02:05+00:00 to 2026-06-03T22:40:45+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 158.69999999999998863131622783839702606201171875,
    "points_in_zone": 16,
    "first_point": {
        "ts": "2026-06-03T20:02:05+00:00",
        "lat": 34.7171783000000004903995431959629058837890625,
        "lon": 33.35792500000000160298441187478601932525634765625
    },
    "last_point": {
        "ts": "2026-06-03T22:40:45+00:00",
        "lat": 34.71307170000000041909515857696533203125,
        "lon": 33.356643300000001772787072695791721343994140625
    }
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 20:02 UTC 75.0%
  • Duration: 2h 38m
  • Radius: 392 meters
  • Data Points: 16 AIS positions
  • Centroid: 34.7165, 33.3575
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 392.30000000000001136868377216160297393798828125,
    "duration_minutes": 158.69999999999998863131622783839702606201171875,
    "points": 16,
    "centroid": {
        "lat": 34.716541868749999366627889685332775115966796875,
        "lon": 33.3574682312499959380147629417479038238525390625
    },
    "bbox": {
        "min_lat": 34.71307170000000041909515857696533203125,
        "min_lon": 33.356643300000001772787072695791721343994140625,
        "max_lat": 34.7171783000000004903995431959629058837890625,
        "max_lon": 33.35792500000000160298441187478601932525634765625
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 19:44 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 2h 56m
  • Data Points: 19 AIS positions
  • Period: 2026-06-03T19:44:06+00:00 to 2026-06-03T22:40:45+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 176.69999999999998863131622783839702606201171875,
    "points_in_zone": 19,
    "first_point": {
        "ts": "2026-06-03T19:44:06+00:00",
        "lat": 34.71748000000000189402271644212305545806884765625,
        "lon": 33.3579399999999992587618180550634860992431640625
    },
    "last_point": {
        "ts": "2026-06-03T22:40:45+00:00",
        "lat": 34.71307170000000041909515857696533203125,
        "lon": 33.356643300000001772787072695791721343994140625
    }
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 19:44 UTC 75.0%
  • Duration: 2h 56m
  • Radius: 408 meters
  • Data Points: 19 AIS positions
  • Centroid: 34.7167, 33.3575
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 408,
    "duration_minutes": 176.69999999999998863131622783839702606201171875,
    "points": 19,
    "centroid": {
        "lat": 34.71667358947369308452834957279264926910400390625,
        "lon": 33.35754263684210485507719567976891994476318359375
    },
    "bbox": {
        "min_lat": 34.71307170000000041909515857696533203125,
        "min_lon": 33.356643300000001772787072695791721343994140625,
        "max_lat": 34.71748000000000189402271644212305545806884765625,
        "max_lon": 33.3579466999999993959136190824210643768310546875
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 18:07 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 1h 19m
  • Data Points: 16 AIS positions
  • Period: 2026-06-03T18:07:56+00:00 to 2026-06-03T19:27:48+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 79.900000000000005684341886080801486968994140625,
    "points_in_zone": 16,
    "first_point": {
        "ts": "2026-06-03T18:07:56+00:00",
        "lat": 34.7176333000000028050635592080652713775634765625,
        "lon": 33.35791830000000146583261084742844104766845703125
    },
    "last_point": {
        "ts": "2026-06-03T19:27:48+00:00",
        "lat": 34.71743000000000023419488570652902126312255859375,
        "lon": 33.357799999999997453414835035800933837890625
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 17:16 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 2h 11m
  • Data Points: 22 AIS positions
  • Period: 2026-06-03T17:16:50+00:00 to 2026-06-03T19:27:48+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 131,
    "points_in_zone": 22,
    "first_point": {
        "ts": "2026-06-03T17:16:50+00:00",
        "lat": 34.717541699999998172643245197832584381103515625,
        "lon": 33.35794829999999677738742320798337459564208984375
    },
    "last_point": {
        "ts": "2026-06-03T19:27:48+00:00",
        "lat": 34.71743000000000023419488570652902126312255859375,
        "lon": 33.357799999999997453414835035800933837890625
    }
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 17:16 UTC 75.0%
  • Duration: 2h 11m
  • Radius: 66 meters
  • Data Points: 22 AIS positions
  • Centroid: 34.7175, 33.3579
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 66.099999999999994315658113919198513031005859375,
    "duration_minutes": 131,
    "points": 22,
    "centroid": {
        "lat": 34.71753871363636534397301147691905498504638671875,
        "lon": 33.35792015454546088903953204862773418426513671875
    },
    "bbox": {
        "min_lat": 34.71701999999999799229044583626091480255126953125,
        "min_lon": 33.35756500000000102090780274011194705963134765625,
        "max_lat": 34.7177482999999966750692692585289478302001953125,
        "max_lon": 33.35807170000000354548319592140614986419677734375
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 16:05 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 3h 22m
  • Data Points: 35 AIS positions
  • Period: 2026-06-03T16:05:03+00:00 to 2026-06-03T19:27:48+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 202.80000000000001136868377216160297393798828125,
    "points_in_zone": 35,
    "first_point": {
        "ts": "2026-06-03T16:05:03+00:00",
        "lat": 34.71657330000000030167939257808029651641845703125,
        "lon": 33.35748000000000246245690505020320415496826171875
    },
    "last_point": {
        "ts": "2026-06-03T19:27:48+00:00",
        "lat": 34.71743000000000023419488570652902126312255859375,
        "lon": 33.357799999999997453414835035800933837890625
    }
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 16:05 UTC 75.0%
  • Duration: 3h 22m
  • Radius: 138 meters
  • Data Points: 35 AIS positions
  • Centroid: 34.7176, 33.3579
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 138.30000000000001136868377216160297393798828125,
    "duration_minutes": 202.80000000000001136868377216160297393798828125,
    "points": 35,
    "centroid": {
        "lat": 34.71757909428571764465232263319194316864013671875,
        "lon": 33.3578506714285794032548437826335430145263671875
    },
    "bbox": {
        "min_lat": 34.71657330000000030167939257808029651641845703125,
        "min_lon": 33.35635169999999760648279334418475627899169921875,
        "max_lat": 34.71799829999999786878106533549726009368896484375,
        "max_lon": 33.3581183000000009997165761888027191162109375
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 15:37 UTC 75.0%
  • Duration: 3h 50m
  • Radius: 139 meters
  • Data Points: 38 AIS positions
  • Centroid: 34.7176, 33.3579
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 139,
    "duration_minutes": 230,
    "points": 38,
    "centroid": {
        "lat": 34.71758486578946900635855854488909244537353515625,
        "lon": 33.35785790000000616828401689417660236358642578125
    },
    "bbox": {
        "min_lat": 34.71657330000000030167939257808029651641845703125,
        "min_lon": 33.35635169999999760648279334418475627899169921875,
        "max_lat": 34.71799829999999786878106533549726009368896484375,
        "max_lon": 33.3581266999999996869519236497581005096435546875
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 15:00 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 4h 26m
  • Data Points: 43 AIS positions
  • Period: 2026-06-03T15:00:53+00:00 to 2026-06-03T19:27:48+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 266.8999999999999772626324556767940521240234375,
    "points_in_zone": 43,
    "first_point": {
        "ts": "2026-06-03T15:00:53+00:00",
        "lat": 34.71804829999999952860889607109129428863525390625,
        "lon": 33.35763829999999785513864480890333652496337890625
    },
    "last_point": {
        "ts": "2026-06-03T19:27:48+00:00",
        "lat": 34.71743000000000023419488570652902126312255859375,
        "lon": 33.357799999999997453414835035800933837890625
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 14:41 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 4h 46m
  • Data Points: 46 AIS positions
  • Period: 2026-06-03T14:41:43+00:00 to 2026-06-03T19:27:48+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 286.1000000000000227373675443232059478759765625,
    "points_in_zone": 46,
    "first_point": {
        "ts": "2026-06-03T14:41:43+00:00",
        "lat": 34.71793999999999869032762944698333740234375,
        "lon": 33.35776829999999648634911864064633846282958984375
    },
    "last_point": {
        "ts": "2026-06-03T19:27:48+00:00",
        "lat": 34.71743000000000023419488570652902126312255859375,
        "lon": 33.357799999999997453414835035800933837890625
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 13:58 UTC 62/100
Vessel A: IMO 9135793 (SEAGAS MAJOR) LIBERIA
Vessel B: Hyperion (HYPERION) Russia
  • Minimum Distance: 6 meters
  • Average Distance: 61 meters
  • Duration: 32 minutes
  • Period: 2026-06-03T13:58:01+00:00 to 2026-06-03T14:30:01+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.3 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 62/100

Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and HYPERION) maintained close proximity (min 6m, avg 61m) for 32 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.3 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 6m, avg 61m
Duration5/25Duration 32 minutes
Speed Stability14/20both nearly stationary; somewhat variable speeds
Distance Consistency8/15Distance variance ±91m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-03T23:30:15.968309+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 273278750,
        "imo": 9322968,
        "name": "HYPERION",
        "flag": "Russia"
    },
    "min_distance_m": 5.5,
    "avg_distance_m": 60.89999999999999857891452847979962825775146484375,
    "distance_consistency_m": 90.900000000000005684341886080801486968994140625,
    "duration_minutes": 32,
    "overlap_duration_s": 1920,
    "speed_a_avg": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_a_std": 0.289999999999999980015985556747182272374629974365234375,
    "speed_b_avg": 0.330000000000000015543122344752191565930843353271484375,
    "speed_b_std": 0.57999999999999996003197111349436454474925994873046875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1700000000000000122124532708767219446599483489990234375,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.330000000000000015543122344752191565930843353271484375,
            "max_sog": 1
        }
    },
    "time_window": {
        "start": "2026-06-03T13:58:01+00:00",
        "end": "2026-06-03T14:30:01+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 62,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 6m, avg 61m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 32 minutes"
            },
            "speed_stability": {
                "score": 14,
                "max": 20,
                "detail": "both nearly stationary; somewhat variable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b191m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and HYPERION) maintained close proximity (min 6m, avg 61m) for 32 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.3 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717273399999999838883013580925762653350830078125,
            "lon": 35.99962839999999886231307755224406719207763671875
        },
        "time_window": {
            "start_ts": "2026-06-03T13:58:01+00:00",
            "end_ts": "2026-06-03T14:30:01+00:00"
        },
        "searched_at": "2026-06-03T23:30:15.968309+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 13:51 UTC 68/100
Vessel A: IMO 9135793 (SEAGAS MAJOR) LIBERIA
Vessel B: IMO 9724714 (ASTROLIGHT) Marshall Is
  • Minimum Distance: 0 meters
  • Average Distance: 43 meters
  • Duration: 38 minutes
  • Period: 2026-06-03T13:51:15+00:00 to 2026-06-03T14:30:01+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 68/100

Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and ASTROLIGHT) maintained close proximity (min 0m, avg 43m) for 39 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 43m
Duration5/25Duration 39 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±85m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-03T20:30:04.547231+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 538011848,
        "imo": 9724714,
        "name": "ASTROLIGHT",
        "flag": "Marshall Is"
    },
    "min_distance_m": 0.40000000000000002220446049250313080847263336181640625,
    "avg_distance_m": 43.2999999999999971578290569595992565155029296875,
    "distance_consistency_m": 85.099999999999994315658113919198513031005859375,
    "duration_minutes": 38.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 2326,
    "speed_a_avg": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_a_std": 0.2399999999999999911182158029987476766109466552734375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1499999999999999944488848768742172978818416595458984375,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-06-03T13:51:15+00:00",
        "end": "2026-06-03T14:30:01+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 68,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 43m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 39 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b185m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and ASTROLIGHT) maintained close proximity (min 0m, avg 43m) for 39 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717095300000000435147740063257515430450439453125,
            "lon": 35.999376699999999118517735041677951812744140625
        },
        "time_window": {
            "start_ts": "2026-06-03T13:51:15+00:00",
            "end_ts": "2026-06-03T14:30:01+00:00"
        },
        "searched_at": "2026-06-03T20:30:04.547231+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 13:51 UTC 68/100
Vessel A: IMO 9135793 (SEAGAS MAJOR) LIBERIA
Vessel B: JASPER (JASPER) CAMEROON
  • Minimum Distance: 1 meters
  • Average Distance: 45 meters
  • Duration: 38 minutes
  • Period: 2026-06-03T13:51:15+00:00 to 2026-06-03T14:30:01+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 68/100

Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and JASPER) maintained close proximity (min 1m, avg 45m) for 39 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 1m, avg 45m
Duration5/25Duration 39 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±84m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-03T22:45:06.709548+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 613472020,
        "imo": 9299886,
        "name": "JASPER",
        "flag": "CAMEROON"
    },
    "min_distance_m": 1.3000000000000000444089209850062616169452667236328125,
    "avg_distance_m": 45.2000000000000028421709430404007434844970703125,
    "distance_consistency_m": 84.2000000000000028421709430404007434844970703125,
    "duration_minutes": 38.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 2326,
    "speed_a_avg": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_a_std": 0.2399999999999999911182158029987476766109466552734375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1499999999999999944488848768742172978818416595458984375,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-06-03T13:51:15+00:00",
        "end": "2026-06-03T14:30:01+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 68,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 1m, avg 45m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 39 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b184m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and JASPER) maintained close proximity (min 1m, avg 45m) for 39 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.71708890000000025111148715950548648834228515625,
            "lon": 35.999363299999998844214132986962795257568359375
        },
        "time_window": {
            "start_ts": "2026-06-03T13:51:15+00:00",
            "end_ts": "2026-06-03T14:30:01+00:00"
        },
        "searched_at": "2026-06-03T22:45:06.709548+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 13:51 UTC 68/100
Vessel A: IMO 9135793 (SEAGAS MAJOR) LIBERIA
Vessel B: IMO 9354521 (ANHONA) BELIZE
  • Minimum Distance: 2 meters
  • Average Distance: 44 meters
  • Duration: 38 minutes
  • Period: 2026-06-03T13:51:15+00:00 to 2026-06-03T14:30:01+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 68/100

Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and ANHONA) maintained close proximity (min 2m, avg 44m) for 39 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 2m, avg 44m
Duration5/25Duration 39 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±84m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-03T23:45:11.647355+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 312171000,
        "imo": 9354521,
        "name": "ANHONA",
        "flag": "BELIZE"
    },
    "min_distance_m": 1.8000000000000000444089209850062616169452667236328125,
    "avg_distance_m": 44.2999999999999971578290569595992565155029296875,
    "distance_consistency_m": 84.5,
    "duration_minutes": 38.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 2326,
    "speed_a_avg": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_a_std": 0.2399999999999999911182158029987476766109466552734375,
    "speed_b_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1499999999999999944488848768742172978818416595458984375,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-06-03T13:51:15+00:00",
        "end": "2026-06-03T14:30:01+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 68,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 2m, avg 44m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 39 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b184m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and ANHONA) maintained close proximity (min 2m, avg 44m) for 39 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717202900000000198588168132118880748748779296875,
            "lon": 35.999555200000003196691977791488170623779296875
        },
        "time_window": {
            "start_ts": "2026-06-03T13:51:15+00:00",
            "end_ts": "2026-06-03T14:30:01+00:00"
        },
        "searched_at": "2026-06-03T23:45:11.647355+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 13:51 UTC 68/100
Vessel A: IMO 9135793 (SEAGAS MAJOR) LIBERIA
Vessel B: DORIN (DORIN) CAMEROON
  • Minimum Distance: 3 meters
  • Average Distance: 46 meters
  • Duration: 38 minutes
  • Period: 2026-06-03T13:51:15+00:00 to 2026-06-03T14:30:01+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 68/100

Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and DORIN) maintained close proximity (min 3m, avg 46m) for 39 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 3m, avg 46m
Duration5/25Duration 39 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±85m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-04T01:30:12.328177+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 613414203,
        "imo": 9290828,
        "name": "DORIN",
        "flag": "CAMEROON"
    },
    "min_distance_m": 3.29999999999999982236431605997495353221893310546875,
    "avg_distance_m": 46.2999999999999971578290569595992565155029296875,
    "distance_consistency_m": 85,
    "duration_minutes": 38.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 2326,
    "speed_a_avg": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_a_std": 0.2399999999999999911182158029987476766109466552734375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1499999999999999944488848768742172978818416595458984375,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-06-03T13:51:15+00:00",
        "end": "2026-06-03T14:30:01+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 68,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 3m, avg 46m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 39 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b185m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and DORIN) maintained close proximity (min 3m, avg 46m) for 39 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717207099999999542205841862596571445465087890625,
            "lon": 35.99955849999999912824932835064828395843505859375
        },
        "time_window": {
            "start_ts": "2026-06-03T13:51:15+00:00",
            "end_ts": "2026-06-03T14:30:01+00:00"
        },
        "searched_at": "2026-06-04T01:30:12.328177+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 13:51 UTC 68/100
Vessel A: IMO 9135793 (SEAGAS MAJOR) LIBERIA
Vessel B: HALCYON (SINO STAR) SIERRA LEONE
  • Minimum Distance: 0 meters
  • Average Distance: 48 meters
  • Duration: 38 minutes
  • Period: 2026-06-03T13:51:15+00:00 to 2026-06-03T14:30:01+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 68/100

Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and SINO STAR) maintained close proximity (min 0m, avg 48m) for 39 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 48m
Duration5/25Duration 39 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±83m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-04T01:45:01.785226+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 667002309,
        "imo": 9263693,
        "name": "SINO STAR",
        "flag": "SIERRA LEONE"
    },
    "min_distance_m": 0,
    "avg_distance_m": 47.89999999999999857891452847979962825775146484375,
    "distance_consistency_m": 82.7000000000000028421709430404007434844970703125,
    "duration_minutes": 38.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 2326,
    "speed_a_avg": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_a_std": 0.2399999999999999911182158029987476766109466552734375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1499999999999999944488848768742172978818416595458984375,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-06-03T13:51:15+00:00",
        "end": "2026-06-03T14:30:01+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 68,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 48m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 39 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b183m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and SINO STAR) maintained close proximity (min 0m, avg 48m) for 39 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717227900000001028502083499915897846221923828125,
            "lon": 35.99955870000000146546881296671926975250244140625
        },
        "time_window": {
            "start_ts": "2026-06-03T13:51:15+00:00",
            "end_ts": "2026-06-03T14:30:01+00:00"
        },
        "searched_at": "2026-06-04T01:45:01.785226+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 13:42 UTC 73/100
Vessel A: IMO 9135793 (SEAGAS MAJOR) LIBERIA
Vessel B: ATMOS (ATMOS) CAMEROON
  • Minimum Distance: 86 meters
  • Average Distance: 139 meters
  • Duration: 47 minutes
  • Period: 2026-06-03T13:42:36+00:00 to 2026-06-03T14:30:01+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 73/100

Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and ATMOS) maintained close proximity (min 86m, avg 138m) for 47 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 86m, avg 138m
Duration10/25Duration 47 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±64m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-04T00:00:02.073860+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 613009690,
        "imo": 9337418,
        "name": "ATMOS",
        "flag": "CAMEROON"
    },
    "min_distance_m": 85.599999999999994315658113919198513031005859375,
    "avg_distance_m": 138.5,
    "distance_consistency_m": 63.5,
    "duration_minutes": 47.39999999999999857891452847979962825775146484375,
    "overlap_duration_s": 2845,
    "speed_a_avg": 0.11999999999999999555910790149937383830547332763671875,
    "speed_a_std": 0.2200000000000000011102230246251565404236316680908203125,
    "speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.11999999999999999555910790149937383830547332763671875,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-06-03T13:42:36+00:00",
        "end": "2026-06-03T14:30:01+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 73,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 86m, avg 138m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 47 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b164m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and ATMOS) maintained close proximity (min 86m, avg 138m) for 47 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.71767030000000175959939952008426189422607421875,
            "lon": 35.99993599999999815963747096247971057891845703125
        },
        "time_window": {
            "start_ts": "2026-06-03T13:42:36+00:00",
            "end_ts": "2026-06-03T14:30:01+00:00"
        },
        "searched_at": "2026-06-04T00:00:02.073860+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 13:40 UTC 73/100
Vessel A: IMO 9135793 (SEAGAS MAJOR) LIBERIA
Vessel B: IMO 9010955 (PIERO A) COMOROS
  • Minimum Distance: 0 meters
  • Average Distance: 30 meters
  • Duration: 49 minutes
  • Period: 2026-06-03T13:40:29+00:00 to 2026-06-03T14:30:01+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 73/100

Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and PIERO A) maintained close proximity (min 0m, avg 30m) for 50 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 30m
Duration10/25Duration 50 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±69m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-03T23:45:09.257223+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 620800105,
        "imo": 9010955,
        "name": "PIERO A",
        "flag": "COMOROS"
    },
    "min_distance_m": 0.299999999999999988897769753748434595763683319091796875,
    "avg_distance_m": 29.60000000000000142108547152020037174224853515625,
    "distance_consistency_m": 68.7999999999999971578290569595992565155029296875,
    "duration_minutes": 49.5,
    "overlap_duration_s": 2972,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.200000000000000011102230246251565404236316680908203125,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-06-03T13:40:29+00:00",
        "end": "2026-06-03T14:30:01+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 73,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 30m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 50 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b169m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and PIERO A) maintained close proximity (min 0m, avg 30m) for 50 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.71716380000000157224349095486104488372802734375,
            "lon": 35.9994913000000025249391910620033740997314453125
        },
        "time_window": {
            "start_ts": "2026-06-03T13:40:29+00:00",
            "end_ts": "2026-06-03T14:30:01+00:00"
        },
        "searched_at": "2026-06-03T23:45:09.257223+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 13:38 UTC 70/100
Vessel A: IMO 9135793 (SEAGAS MAJOR) LIBERIA
Vessel B: HORAE (HORAE) Panama
  • Minimum Distance: 7 meters
  • Average Distance: 165 meters
  • Duration: 51 minutes
  • Period: 2026-06-03T13:38:11+00:00 to 2026-06-03T14:30:01+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and HORAE) maintained close proximity (min 7m, avg 165m) for 52 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 7m, avg 165m
Duration10/25Duration 52 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency5/15Distance variance ±146m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-03T23:45:06.869474+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 352179000,
        "imo": 9413004,
        "name": "HORAE",
        "flag": "Panama"
    },
    "min_distance_m": 7.4000000000000003552713678800500929355621337890625,
    "avg_distance_m": 164.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 146.30000000000001136868377216160297393798828125,
    "duration_minutes": 51.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 3110,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.179999999999999993338661852249060757458209991455078125,
    "speed_b_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0.14000000000000001332267629550187848508358001708984375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-06-03T13:38:11+00:00",
        "end": "2026-06-03T14:30:01+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 7m, avg 165m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 52 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 5,
                "max": 15,
                "detail": "Distance variance \u00b1146m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and HORAE) maintained close proximity (min 7m, avg 165m) for 52 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.716703800000001223224899149499833583831787109375,
            "lon": 35.9990212000000013858880265615880489349365234375
        },
        "time_window": {
            "start_ts": "2026-06-03T13:38:11+00:00",
            "end_ts": "2026-06-03T14:30:01+00:00"
        },
        "searched_at": "2026-06-03T23:45:06.869474+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 13:38 UTC 73/100
Vessel A: IMO 9135793 (SEAGAS MAJOR) LIBERIA
Vessel B: IMO 9310305 (SAMBA) Marshall Is
  • Minimum Distance: 2 meters
  • Average Distance: 29 meters
  • Duration: 51 minutes
  • Period: 2026-06-03T13:38:11+00:00 to 2026-06-03T14:30:01+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 73/100

Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and SAMBA) maintained close proximity (min 2m, avg 29m) for 52 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 2m, avg 29m
Duration10/25Duration 52 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±64m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-03T22:45:01.890631+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 538011921,
        "imo": 9310305,
        "name": "SAMBA",
        "flag": "Marshall Is"
    },
    "min_distance_m": 2.100000000000000088817841970012523233890533447265625,
    "avg_distance_m": 29.300000000000000710542735760100185871124267578125,
    "distance_consistency_m": 64,
    "duration_minutes": 51.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 3110,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.179999999999999993338661852249060757458209991455078125,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-06-03T13:38:11+00:00",
        "end": "2026-06-03T14:30:01+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 73,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 2m, avg 29m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 52 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b164m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and SAMBA) maintained close proximity (min 2m, avg 29m) for 52 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717095400000001603757482371293008327484130859375,
            "lon": 35.99935030000000324434950016438961029052734375
        },
        "time_window": {
            "start_ts": "2026-06-03T13:38:11+00:00",
            "end_ts": "2026-06-03T14:30:01+00:00"
        },
        "searched_at": "2026-06-03T22:45:01.890631+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 13:38 UTC 73/100
Vessel A: IMO 9135793 (SEAGAS MAJOR) LIBERIA
Vessel B: IMO 9260263 (HAWK III) PANAMA
  • Minimum Distance: 35 meters
  • Average Distance: 79 meters
  • Duration: 51 minutes
  • Period: 2026-06-03T13:38:11+00:00 to 2026-06-03T14:30:01+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 73/100

Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and HAWK III) maintained close proximity (min 35m, avg 79m) for 52 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 35m, avg 79m
Duration10/25Duration 52 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±62m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-03T22:45:04.289697+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 374125000,
        "imo": 9260263,
        "name": "HAWK III",
        "flag": "PANAMA"
    },
    "min_distance_m": 35.2000000000000028421709430404007434844970703125,
    "avg_distance_m": 78.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 62.2999999999999971578290569595992565155029296875,
    "duration_minutes": 51.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 3110,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.179999999999999993338661852249060757458209991455078125,
    "speed_b_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-06-03T13:38:11+00:00",
        "end": "2026-06-03T14:30:01+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 73,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 35m, avg 79m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 52 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b162m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and HAWK III) maintained close proximity (min 35m, avg 79m) for 52 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.71700200000000080535755841992795467376708984375,
            "lon": 35.9995454000000023597749532200396060943603515625
        },
        "time_window": {
            "start_ts": "2026-06-03T13:38:11+00:00",
            "end_ts": "2026-06-03T14:30:01+00:00"
        },
        "searched_at": "2026-06-03T22:45:04.289697+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 13:38 UTC 70/100
Vessel A: IMO 9135793 (SEAGAS MAJOR) LIBERIA
Vessel B: IMO 9611541 (THALIA) Liberia
  • Minimum Distance: 2 meters
  • Average Distance: 66 meters
  • Duration: 51 minutes
  • Period: 2026-06-03T13:38:11+00:00 to 2026-06-03T14:30:01+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and THALIA) maintained close proximity (min 2m, avg 66m) for 52 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 2m, avg 66m
Duration10/25Duration 52 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency5/15Distance variance ±101m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-03T23:45:01.917855+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "min_distance_m": 2,
    "avg_distance_m": 66.2999999999999971578290569595992565155029296875,
    "distance_consistency_m": 100.900000000000005684341886080801486968994140625,
    "duration_minutes": 51.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 3110,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.179999999999999993338661852249060757458209991455078125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-06-03T13:38:11+00:00",
        "end": "2026-06-03T14:30:01+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 2m, avg 66m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 52 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 5,
                "max": 15,
                "detail": "Distance variance \u00b1101m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and THALIA) maintained close proximity (min 2m, avg 66m) for 52 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.716978600000000909631125978194177150726318359375,
            "lon": 35.9996038000000027068381314165890216827392578125
        },
        "time_window": {
            "start_ts": "2026-06-03T13:38:11+00:00",
            "end_ts": "2026-06-03T14:30:01+00:00"
        },
        "searched_at": "2026-06-03T23:45:01.917855+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 13:38 UTC 73/100
Vessel A: IMO 9135793 (SEAGAS MAJOR) LIBERIA
Vessel B: IMO 9956939 (TRANS FJORD) Panama
  • Minimum Distance: 1 meters
  • Average Distance: 27 meters
  • Duration: 51 minutes
  • Period: 2026-06-03T13:38:11+00:00 to 2026-06-03T14:30:01+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 73/100

Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and TRANS FJORD) maintained close proximity (min 0m, avg 27m) for 52 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 27m
Duration10/25Duration 52 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±63m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-03T23:45:04.331272+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 352003272,
        "imo": 9956939,
        "name": "TRANS FJORD",
        "flag": "Panama"
    },
    "min_distance_m": 0.5,
    "avg_distance_m": 27.300000000000000710542735760100185871124267578125,
    "distance_consistency_m": 63.39999999999999857891452847979962825775146484375,
    "duration_minutes": 51.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 3110,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.179999999999999993338661852249060757458209991455078125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-06-03T13:38:11+00:00",
        "end": "2026-06-03T14:30:01+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 73,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 27m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 52 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b163m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and TRANS FJORD) maintained close proximity (min 0m, avg 27m) for 52 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717163299999999281908458215184509754180908203125,
            "lon": 35.99947060000000220725269173271954059600830078125
        },
        "time_window": {
            "start_ts": "2026-06-03T13:38:11+00:00",
            "end_ts": "2026-06-03T14:30:01+00:00"
        },
        "searched_at": "2026-06-03T23:45:04.331272+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 13:38 UTC 73/100
Vessel A: IMO 9135793 (SEAGAS MAJOR) LIBERIA
Vessel B: IMO 9448499 (GAZ SERENITY) PANAMA
  • Minimum Distance: 1 meters
  • Average Distance: 44 meters
  • Duration: 51 minutes
  • Period: 2026-06-03T13:38:11+00:00 to 2026-06-03T14:30:01+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 73/100

Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and GAZ SERENITY) maintained close proximity (min 0m, avg 44m) for 52 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 44m
Duration10/25Duration 52 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±64m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-04T01:00:06.602132+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 372961000,
        "imo": 9448499,
        "name": "GAZ SERENITY",
        "flag": "PANAMA"
    },
    "min_distance_m": 0.5,
    "avg_distance_m": 43.60000000000000142108547152020037174224853515625,
    "distance_consistency_m": 63.7999999999999971578290569595992565155029296875,
    "duration_minutes": 51.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 3110,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.179999999999999993338661852249060757458209991455078125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-06-03T13:38:11+00:00",
        "end": "2026-06-03T14:30:01+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 73,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 44m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 52 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b164m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and GAZ SERENITY) maintained close proximity (min 0m, avg 44m) for 52 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717185400000001749276634654961526393890380859375,
            "lon": 35.9995645999999993591700331307947635650634765625
        },
        "time_window": {
            "start_ts": "2026-06-03T13:38:11+00:00",
            "end_ts": "2026-06-03T14:30:01+00:00"
        },
        "searched_at": "2026-06-04T01:00:06.602132+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 13:38 UTC 77/100
Vessel A: IMO 9895226 (NISSOS ANTIMILOS) MARSHALL ISLANDS
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 0 meters
  • Average Distance: 24 meters
  • Duration: 56 minutes
  • Period: 2026-06-03T13:38:59+00:00 to 2026-06-03T14:35:09+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 77/100

Moderate-confidence STS candidate. Two tankers (NISSOS ANTIMILOS and SEAGAS MAJOR) maintained close proximity (min 0m, avg 24m) 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 Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 24m
Duration10/25Duration 56 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency12/15Distance variance ±50m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-04T01:30:09.804647+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538008919,
        "imo": 9895226,
        "name": "NISSOS ANTIMILOS",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 0.200000000000000011102230246251565404236316680908203125,
    "avg_distance_m": 23.699999999999999289457264239899814128875732421875,
    "distance_consistency_m": 49.89999999999999857891452847979962825775146484375,
    "duration_minutes": 56.2000000000000028421709430404007434844970703125,
    "overlap_duration_s": 3370,
    "speed_a_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_a_std": 0.299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_std": 0.14000000000000001332267629550187848508358001708984375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 1
        },
        "vessel_b": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-06-03T13:38:59+00:00",
        "end": "2026-06-03T14:35:09+00:00"
    },
    "points_count": {
        "vessel_a": 11,
        "vessel_b": 11
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 77,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 24m"
            },
            "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": 12,
                "max": 15,
                "detail": "Distance variance \u00b150m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (NISSOS ANTIMILOS and SEAGAS MAJOR) maintained close proximity (min 0m, avg 24m) 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 Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717154399999998304338078014552593231201171875,
            "lon": 35.9994827000000015004843589849770069122314453125
        },
        "time_window": {
            "start_ts": "2026-06-03T13:38:11+00:00",
            "end_ts": "2026-06-03T14:35:09+00:00"
        },
        "searched_at": "2026-06-04T01:30:09.804647+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 13:38 UTC 73/100
Vessel A: IMO 9135793 (SEAGAS MAJOR) LIBERIA
Vessel B: IMO 9674713 (HIGH FREEDOM) Liberia
  • Minimum Distance: 1 meters
  • Average Distance: 28 meters
  • Duration: 51 minutes
  • Period: 2026-06-03T13:38:11+00:00 to 2026-06-03T14:30:01+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 73/100

Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and HIGH FREEDOM) maintained close proximity (min 1m, avg 28m) for 52 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 1m, avg 28m
Duration10/25Duration 52 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±64m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-04T01:45:04.389697+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 636022700,
        "imo": 9674713,
        "name": "HIGH FREEDOM",
        "flag": "Liberia"
    },
    "min_distance_m": 1,
    "avg_distance_m": 27.5,
    "distance_consistency_m": 63.5,
    "duration_minutes": 51.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 3110,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.179999999999999993338661852249060757458209991455078125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-06-03T13:38:11+00:00",
        "end": "2026-06-03T14:30:01+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 73,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 1m, avg 28m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 52 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b164m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and HIGH FREEDOM) maintained close proximity (min 1m, avg 28m) for 52 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.7171641999999991412551025860011577606201171875,
            "lon": 35.99947039999999987003320711664855480194091796875
        },
        "time_window": {
            "start_ts": "2026-06-03T13:38:11+00:00",
            "end_ts": "2026-06-03T14:30:01+00:00"
        },
        "searched_at": "2026-06-04T01:45:04.389697+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
Jun 3, 2026 13:24 UTC 80.0%
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 1h 5m
  • Data Points: 10 AIS positions
  • Period: 2026-06-03T13:24:16+00:00 to 2026-06-03T14:30:01+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 65.7999999999999971578290569595992565155029296875,
    "points_in_zone": 10,
    "first_point": {
        "ts": "2026-06-03T13:24:16+00:00",
        "lat": 31.7171333000000004176399670541286468505859375,
        "lon": 35.99936170000000146274032886140048503875732421875
    },
    "last_point": {
        "ts": "2026-06-03T14:30:01+00:00",
        "lat": 31.717988299999998247358234948478639125823974609375,
        "lon": 36.00084170000000227673808694817125797271728515625
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 13:20 UTC 65/100
Vessel A: IMO 9135793 (SEAGAS MAJOR) LIBERIA
Vessel B: Georgy Maslov (GEORGY MASLOV) RUSSIA
  • Minimum Distance: 2 meters
  • Average Distance: 29 meters
  • Duration: 51 minutes
  • Period: 2026-06-03T13:38:11+00:00 to 2026-06-03T14:30:01+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.6 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and GEORGY MASLOV) maintained close proximity (min 2m, avg 29m) for 52 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.6 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 2m, avg 29m
Duration10/25Duration 52 minutes
Speed Stability12/20both very slow; somewhat variable speeds
Distance Consistency8/15Distance variance ±63m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-03T19:30:02.201531+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 273259730,
        "imo": 9610793,
        "name": "GEORGY MASLOV",
        "flag": "RUSSIA"
    },
    "min_distance_m": 2,
    "avg_distance_m": 29.199999999999999289457264239899814128875732421875,
    "distance_consistency_m": 62.7999999999999971578290569595992565155029296875,
    "duration_minutes": 51.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 3110,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.179999999999999993338661852249060757458209991455078125,
    "speed_b_avg": 0.64000000000000001332267629550187848508358001708984375,
    "speed_b_std": 0.68000000000000004884981308350688777863979339599609375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.64000000000000001332267629550187848508358001708984375,
            "max_sog": 1.600000000000000088817841970012523233890533447265625
        }
    },
    "time_window": {
        "start": "2026-06-03T13:38:11+00:00",
        "end": "2026-06-03T14:30:01+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 2m, avg 29m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 52 minutes"
            },
            "speed_stability": {
                "score": 12,
                "max": 20,
                "detail": "both very slow; somewhat variable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b163m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and GEORGY MASLOV) maintained close proximity (min 2m, avg 29m) for 52 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.6 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717113999999998696921466034837067127227783203125,
            "lon": 35.999346099999996795304468832910060882568359375
        },
        "time_window": {
            "start_ts": "2026-06-03T13:20:56+00:00",
            "end_ts": "2026-06-03T14:30:01+00:00"
        },
        "searched_at": "2026-06-03T19:30:02.201531+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 13:19 UTC 72/100
Vessel A: Denver (DENVER) SIERRA LEONE
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 6 meters
  • Average Distance: 89 meters
  • Duration: 1h 11m
  • Period: 2026-06-03T13:19:35+00:00 to 2026-06-03T14:31:11+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.3 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 72/100

Moderate-confidence STS candidate. Two tankers (DENVER and SEAGAS MAJOR) maintained close proximity (min 6m, avg 89m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 6m, avg 89m
Duration15/25Duration 72 minutes
Speed Stability17/20both nearly stationary; stable speeds
Distance Consistency5/15Distance variance ±117m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-04T01:30:07.417138+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 667001964,
        "imo": 9382712,
        "name": "DENVER",
        "flag": "SIERRA LEONE"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 5.79999999999999982236431605997495353221893310546875,
    "avg_distance_m": 88.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 117.400000000000005684341886080801486968994140625,
    "duration_minutes": 71.599999999999994315658113919198513031005859375,
    "overlap_duration_s": 4296,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.25,
    "speed_b_std": 0.34999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.25,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-06-03T13:19:35+00:00",
        "end": "2026-06-03T14:31:11+00:00"
    },
    "points_count": {
        "vessel_a": 2,
        "vessel_b": 2
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 72,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 6m, avg 89m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 72 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 5,
                "max": 15,
                "detail": "Distance variance \u00b1117m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (DENVER and SEAGAS MAJOR) maintained close proximity (min 6m, avg 89m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717327499999999673718775738961994647979736328125,
            "lon": 35.99973380000000133804860524833202362060546875
        },
        "time_window": {
            "start_ts": "2026-06-03T13:19:35+00:00",
            "end_ts": "2026-06-03T14:31:11+00:00"
        },
        "searched_at": "2026-06-04T01:30:07.417138+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 10:01 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 1h 4m
  • Data Points: 14 AIS positions
  • Period: 2026-06-03T10:01:53+00:00 to 2026-06-03T11:06:01+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 64.099999999999994315658113919198513031005859375,
    "points_in_zone": 14,
    "first_point": {
        "ts": "2026-06-03T10:01:53+00:00",
        "lat": 34.71609670000000136269591166637837886810302734375,
        "lon": 33.36047330000000243899194174446165561676025390625
    },
    "last_point": {
        "ts": "2026-06-03T11:06:01+00:00",
        "lat": 34.7181216999999975314494804479181766510009765625,
        "lon": 33.3573032999999981029759510420262813568115234375
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 08:04 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 1h 40m
  • Data Points: 13 AIS positions
  • Period: 2026-06-03T08:04:16+00:00 to 2026-06-03T09:44:16+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 100,
    "points_in_zone": 13,
    "first_point": {
        "ts": "2026-06-03T08:04:16+00:00",
        "lat": 34.71784170000000102618287201039493083953857421875,
        "lon": 33.355919999999997571649146266281604766845703125
    },
    "last_point": {
        "ts": "2026-06-03T09:44:16+00:00",
        "lat": 34.71815500000000298541635856963694095611572265625,
        "lon": 33.35635169999999760648279334418475627899169921875
    }
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 08:04 UTC 75.0%
  • Duration: 1h 40m
  • Radius: 27 meters
  • Data Points: 13 AIS positions
  • Centroid: 34.7180, 33.3562
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 27.39999999999999857891452847979962825775146484375,
    "duration_minutes": 100,
    "points": 13,
    "centroid": {
        "lat": 34.71796090769230858086302760057151317596435546875,
        "lon": 33.35616641538461379923319327645003795623779296875
    },
    "bbox": {
        "min_lat": 34.717815000000001646185410209000110626220703125,
        "min_lon": 33.355919999999997571649146266281604766845703125,
        "max_lat": 34.71815500000000298541635856963694095611572265625,
        "max_lon": 33.3563582999999965750248520635068416595458984375
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 07:52 UTC 75.0%
  • Duration: 1h 51m
  • Radius: 32 meters
  • Data Points: 16 AIS positions
  • Centroid: 34.7179, 33.3561
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 32.2999999999999971578290569595992565155029296875,
    "duration_minutes": 111.5,
    "points": 16,
    "centroid": {
        "lat": 34.71793104999999712845237809233367443084716796875,
        "lon": 33.35612552500000305144567391835153102874755859375
    },
    "bbox": {
        "min_lat": 34.717770000000001573425834067165851593017578125,
        "min_lon": 33.35591000000000150293999467976391315460205078125,
        "max_lat": 34.71815500000000298541635856963694095611572265625,
        "max_lon": 33.3563582999999965750248520635068416595458984375
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 07:50 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 1h 54m
  • Data Points: 17 AIS positions
  • Period: 2026-06-03T07:50:04+00:00 to 2026-06-03T09:44:16+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 114.2000000000000028421709430404007434844970703125,
    "points_in_zone": 17,
    "first_point": {
        "ts": "2026-06-03T07:50:04+00:00",
        "lat": 34.804298299999999244391801767051219940185546875,
        "lon": 33.33284830000000198424459085799753665924072265625
    },
    "last_point": {
        "ts": "2026-06-03T09:44:16+00:00",
        "lat": 34.71815500000000298541635856963694095611572265625,
        "lon": 33.35635169999999760648279334418475627899169921875
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 06:59 UTC 72/100
Vessel A: IMO 9611541 (THALIA) Liberia
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 2 meters
  • Average Distance: 2 meters
  • Duration: 44 minutes
  • Period: 2026-06-03T06:59:47+00:00 to 2026-06-03T07:44:27+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.3 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 72/100

Moderate-confidence STS candidate. Two tankers (THALIA and SEAGAS MAJOR) maintained close proximity (min 2m, avg 2m) for 45 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 2m, avg 2m
Duration5/25Duration 45 minutes
Speed Stability17/20both nearly stationary; stable speeds
Distance Consistency15/15Distance variance ±0m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-03T10:45:08.702579+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 1.5,
    "avg_distance_m": 1.899999999999999911182158029987476766109466552734375,
    "distance_consistency_m": 0.200000000000000011102230246251565404236316680908203125,
    "duration_minutes": 44.7000000000000028421709430404007434844970703125,
    "overlap_duration_s": 2680,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.340000000000000024424906541753443889319896697998046875,
    "speed_b_std": 0.429999999999999993338661852249060757458209991455078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.340000000000000024424906541753443889319896697998046875,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        }
    },
    "time_window": {
        "start": "2026-06-03T06:59:47+00:00",
        "end": "2026-06-03T07:44:27+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 72,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 2m, avg 2m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 45 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b10m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (THALIA and SEAGAS MAJOR) maintained close proximity (min 2m, avg 2m) for 45 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717115100000000893487595021724700927734375,
            "lon": 35.9993740000000030931914807297289371490478515625
        },
        "time_window": {
            "start_ts": "2026-06-03T06:59:47+00:00",
            "end_ts": "2026-06-03T07:44:27+00:00"
        },
        "searched_at": "2026-06-03T10:45:08.702579+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 06:47 UTC 92/100
Vessel A: IMO 9895226 (NISSOS ANTIMILOS) MARSHALL ISLANDS
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 1 meters
  • Average Distance: 2 meters
  • Duration: 3h 11m
  • Period: 2026-06-03T06:47:32+00:00 to 2026-06-03T09:58:31+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.3 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 92/100

High-confidence STS candidate. Two tankers (NISSOS ANTIMILOS and SEAGAS MAJOR) maintained close proximity (min 0m, avg 2m) for 191 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 2m
Duration25/25Duration 191 minutes
Speed Stability17/20both nearly stationary; stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-03T13:30:06.942723+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538008919,
        "imo": 9895226,
        "name": "NISSOS ANTIMILOS",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 0.5,
    "avg_distance_m": 2.20000000000000017763568394002504646778106689453125,
    "distance_consistency_m": 1.5,
    "duration_minutes": 191,
    "overlap_duration_s": 11459,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.2600000000000000088817841970012523233890533447265625,
    "speed_b_std": 0.320000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.2600000000000000088817841970012523233890533447265625,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        }
    },
    "time_window": {
        "start": "2026-06-03T06:47:32+00:00",
        "end": "2026-06-03T09:58:31+00:00"
    },
    "points_count": {
        "vessel_a": 14,
        "vessel_b": 14
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 92,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 2m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 191 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NISSOS ANTIMILOS and SEAGAS MAJOR) maintained close proximity (min 0m, avg 2m) for 191 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717097599999998891462382744066417217254638671875,
            "lon": 35.9993678000000016936610336415469646453857421875
        },
        "time_window": {
            "start_ts": "2026-06-03T06:47:32+00:00",
            "end_ts": "2026-06-03T09:58:31+00:00"
        },
        "searched_at": "2026-06-03T13:30:06.942723+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 06:43 UTC 82/100
Vessel A: IMO 9956939 (TRANS FJORD) Panama
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 1 meters
  • Average Distance: 3 meters
  • Duration: 1h 1m
  • Period: 2026-06-03T06:43:39+00:00 to 2026-06-03T07:44:39+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.3 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 82/100

High-confidence STS candidate. Two tankers (TRANS FJORD and SEAGAS MAJOR) maintained close proximity (min 0m, avg 2m) for 61 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 2m
Duration15/25Duration 61 minutes
Speed Stability17/20both nearly stationary; stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-03T10:45:06.317687+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003272,
        "imo": 9956939,
        "name": "TRANS FJORD",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 0.5,
    "avg_distance_m": 2.5,
    "distance_consistency_m": 1.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 61,
    "overlap_duration_s": 3660,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.2800000000000000266453525910037569701671600341796875,
    "speed_b_std": 0.309999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.2800000000000000266453525910037569701671600341796875,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        }
    },
    "time_window": {
        "start": "2026-06-03T06:43:39+00:00",
        "end": "2026-06-03T07:44:39+00:00"
    },
    "points_count": {
        "vessel_a": 10,
        "vessel_b": 10
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 82,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 2m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 61 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS FJORD and SEAGAS MAJOR) maintained close proximity (min 0m, avg 2m) for 61 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.71710709999999977526385919190943241119384765625,
            "lon": 35.99937249999999977490006131120026111602783203125
        },
        "time_window": {
            "start_ts": "2026-06-03T06:43:39+00:00",
            "end_ts": "2026-06-03T07:44:39+00:00"
        },
        "searched_at": "2026-06-03T10:45:06.317687+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 06:43 UTC 92/100
Vessel A: IMO 9282510 (ILAN) Liberia
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 2 meters
  • Average Distance: 15 meters
  • Duration: 3h 13m
  • Period: 2026-06-03T06:43:03+00:00 to 2026-06-03T09:56:15+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 92/100

High-confidence STS candidate. Two tankers (ILAN and SEAGAS MAJOR) maintained close proximity (min 2m, avg 15m) for 193 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 2m, avg 15m
Duration25/25Duration 193 minutes
Speed Stability17/20both nearly stationary; stable speeds
Distance Consistency15/15Distance variance ±21m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-03T13:45:01.441618+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636025684,
        "imo": 9282510,
        "name": "ILAN",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 1.8000000000000000444089209850062616169452667236328125,
    "avg_distance_m": 14.9000000000000003552713678800500929355621337890625,
    "distance_consistency_m": 20.699999999999999289457264239899814128875732421875,
    "duration_minutes": 193.19999999999998863131622783839702606201171875,
    "overlap_duration_s": 11592,
    "speed_a_avg": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_a_std": 0.35999999999999998667732370449812151491641998291015625,
    "speed_b_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1700000000000000122124532708767219446599483489990234375,
            "max_sog": 0.90000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        }
    },
    "time_window": {
        "start": "2026-06-03T06:43:03+00:00",
        "end": "2026-06-03T09:56:15+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 92,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 2m, avg 15m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 193 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b121m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ILAN and SEAGAS MAJOR) maintained close proximity (min 2m, avg 15m) for 193 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.71704009999999840374584891833364963531494140625,
            "lon": 35.99937990000000098689270089380443096160888671875
        },
        "time_window": {
            "start_ts": "2026-06-03T06:43:03+00:00",
            "end_ts": "2026-06-03T09:56:15+00:00"
        },
        "searched_at": "2026-06-03T13:45:01.441618+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 3, 2026 06:08 UTC 75/100
Vessel A: JASPER (JASPER) CAMEROON
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 1 meters
  • Average Distance: 13 meters
  • Duration: 53 minutes
  • Period: 2026-06-03T06:08:00+00:00 to 2026-06-03T07:00:57+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.5 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (JASPER and SEAGAS MAJOR) maintained close proximity (min 1m, avg 13m) for 53 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 1m, avg 13m
Duration10/25Duration 53 minutes
Speed Stability15/20both very slow; stable speeds
Distance Consistency15/15Distance variance ±21m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-03T11:45:04.920126+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 613472020,
        "imo": 9299886,
        "name": "JASPER",
        "flag": "CAMEROON"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 0.90000000000000002220446049250313080847263336181640625,
    "avg_distance_m": 13.0999999999999996447286321199499070644378662109375,
    "distance_consistency_m": 20.800000000000000710542735760100185871124267578125,
    "duration_minutes": 53,
    "overlap_duration_s": 3177,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.5300000000000000266453525910037569701671600341796875,
    "speed_b_std": 0.460000000000000019984014443252817727625370025634765625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.5300000000000000266453525910037569701671600341796875,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        }
    },
    "time_window": {
        "start": "2026-06-03T06:08:00+00:00",
        "end": "2026-06-03T07:00:57+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 1m, avg 13m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 53 minutes"
            },
            "speed_stability": {
                "score": 15,
                "max": 20,
                "detail": "both very slow; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b121m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (JASPER and SEAGAS MAJOR) maintained close proximity (min 1m, avg 13m) for 53 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717149400000000269983502221293747425079345703125,
            "lon": 35.9994097000000010666553862392902374267578125
        },
        "time_window": {
            "start_ts": "2026-06-03T06:08:00+00:00",
            "end_ts": "2026-06-03T07:00:57+00:00"
        },
        "searched_at": "2026-06-03T11:45:04.920126+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
Jun 3, 2026 06:01 UTC 80.0%
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 1h 5m
  • Data Points: 18 AIS positions
  • Period: 2026-06-03T06:01:12+00:00 to 2026-06-03T07:07:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 65.7999999999999971578290569595992565155029296875,
    "points_in_zone": 18,
    "first_point": {
        "ts": "2026-06-03T06:01:12+00:00",
        "lat": 31.71712000000000131194610730744898319244384765625,
        "lon": 35.99940000000000139834810397587716579437255859375
    },
    "last_point": {
        "ts": "2026-06-03T07:07:02+00:00",
        "lat": 31.717124999999999346300683100707828998565673828125,
        "lon": 35.99935669999999987567207426764070987701416015625
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
Jun 3, 2026 05:55 UTC 80.0%
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 1h 11m
  • Data Points: 20 AIS positions
  • Period: 2026-06-03T05:55:13+00:00 to 2026-06-03T07:07:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 71.7999999999999971578290569595992565155029296875,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-06-03T05:55:13+00:00",
        "lat": 31.716584999999998473185769398696720600128173828125,
        "lon": 35.99854669999999856599970371462404727935791015625
    },
    "last_point": {
        "ts": "2026-06-03T07:07:02+00:00",
        "lat": 31.717124999999999346300683100707828998565673828125,
        "lon": 35.99935669999999987567207426764070987701416015625
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 04:18 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 1h 33m
  • Data Points: 19 AIS positions
  • Period: 2026-06-03T04:18:13+00:00 to 2026-06-03T05:51:33+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 93.2999999999999971578290569595992565155029296875,
    "points_in_zone": 19,
    "first_point": {
        "ts": "2026-06-03T04:18:13+00:00",
        "lat": 34.7169200000000017780621419660747051239013671875,
        "lon": 33.35599830000000309837560052983462810516357421875
    },
    "last_point": {
        "ts": "2026-06-03T05:51:33+00:00",
        "lat": 34.71733329999999995152393239550292491912841796875,
        "lon": 33.4336100000000016052581486292183399200439453125
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 03:00 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 2h 51m
  • Data Points: 23 AIS positions
  • Period: 2026-06-03T03:00:07+00:00 to 2026-06-03T05:51:33+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 171.400000000000005684341886080801486968994140625,
    "points_in_zone": 23,
    "first_point": {
        "ts": "2026-06-03T03:00:07+00:00",
        "lat": 34.71695170000000274512785836122930049896240234375,
        "lon": 33.35601669999999785432009957730770111083984375
    },
    "last_point": {
        "ts": "2026-06-03T05:51:33+00:00",
        "lat": 34.71733329999999995152393239550292491912841796875,
        "lon": 33.4336100000000016052581486292183399200439453125
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 02:00 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 3h 51m
  • Data Points: 29 AIS positions
  • Period: 2026-06-03T02:00:05+00:00 to 2026-06-03T05:51:33+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 231.5,
    "points_in_zone": 29,
    "first_point": {
        "ts": "2026-06-03T02:00:05+00:00",
        "lat": 34.71658500000000202589944819919764995574951171875,
        "lon": 33.3564582999999998946805135346949100494384765625
    },
    "last_point": {
        "ts": "2026-06-03T05:51:33+00:00",
        "lat": 34.71733329999999995152393239550292491912841796875,
        "lon": 33.4336100000000016052581486292183399200439453125
    }
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 02:00 UTC 75.0%
  • Duration: 2h 20m
  • Radius: 42 meters
  • Data Points: 12 AIS positions
  • Centroid: 34.7168, 33.3561
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 41.7999999999999971578290569595992565155029296875,
    "duration_minutes": 140.30000000000001136868377216160297393798828125,
    "points": 12,
    "centroid": {
        "lat": 34.71684015000000300688043353147804737091064453125,
        "lon": 33.35612249166666742894449271261692047119140625
    },
    "bbox": {
        "min_lat": 34.71658500000000202589944819919764995574951171875,
        "min_lon": 33.35599830000000309837560052983462810516357421875,
        "max_lat": 34.71697999999999950659912428818643093109130859375,
        "max_lon": 33.3564582999999998946805135346949100494384765625
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 01:03 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 4h 48m
  • Data Points: 41 AIS positions
  • Period: 2026-06-03T01:03:03+00:00 to 2026-06-03T05:51:33+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 288.5,
    "points_in_zone": 41,
    "first_point": {
        "ts": "2026-06-03T01:03:03+00:00",
        "lat": 34.7166466999999983045199769549071788787841796875,
        "lon": 33.35640169999999926631062407977879047393798828125
    },
    "last_point": {
        "ts": "2026-06-03T05:51:33+00:00",
        "lat": 34.71733329999999995152393239550292491912841796875,
        "lon": 33.4336100000000016052581486292183399200439453125
    }
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 01:03 UTC 75.0%
  • Duration: 3h 17m
  • Radius: 32 meters
  • Data Points: 24 AIS positions
  • Centroid: 34.7168, 33.3562
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 31.800000000000000710542735760100185871124267578125,
    "duration_minutes": 197.400000000000005684341886080801486968994140625,
    "points": 24,
    "centroid": {
        "lat": 34.71675528333333460295762051828205585479736328125,
        "lon": 33.3562480541666701583380927331745624542236328125
    },
    "bbox": {
        "min_lat": 34.71658000000000043883119360543787479400634765625,
        "min_lon": 33.35599830000000309837560052983462810516357421875,
        "max_lat": 34.71697999999999950659912428818643093109130859375,
        "max_lon": 33.35652830000000079735400504432618618011474609375
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 00:11 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 5h 39m
  • Data Points: 46 AIS positions
  • Period: 2026-06-03T00:11:55+00:00 to 2026-06-03T05:51:33+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 339.6000000000000227373675443232059478759765625,
    "points_in_zone": 46,
    "first_point": {
        "ts": "2026-06-03T00:11:55+00:00",
        "lat": 34.71665329999999727306203567422926425933837890625,
        "lon": 33.3565516999999971403667586855590343475341796875
    },
    "last_point": {
        "ts": "2026-06-03T05:51:33+00:00",
        "lat": 34.71733329999999995152393239550292491912841796875,
        "lon": 33.4336100000000016052581486292183399200439453125
    }
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 3, 2026 00:11 UTC 75.0%
  • Duration: 4h 8m
  • Radius: 36 meters
  • Data Points: 29 AIS positions
  • Centroid: 34.7167, 33.3563
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 36.2999999999999971578290569595992565155029296875,
    "duration_minutes": 248.5,
    "points": 29,
    "centroid": {
        "lat": 34.71673293448276353956316597759723663330078125,
        "lon": 33.3562914931034555365840787999331951141357421875
    },
    "bbox": {
        "min_lat": 34.71658000000000043883119360543787479400634765625,
        "min_lon": 33.35599830000000309837560052983462810516357421875,
        "max_lat": 34.71697999999999950659912428818643093109130859375,
        "max_lon": 33.35656999999999783312887302599847316741943359375
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 23:05 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 6h 27m
  • Data Points: 51 AIS positions
  • Period: 2026-06-02T23:23:52+00:00 to 2026-06-03T05:51:33+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 387.69999999999998863131622783839702606201171875,
    "points_in_zone": 51,
    "first_point": {
        "ts": "2026-06-02T23:23:52+00:00",
        "lat": 34.71671330000000210702637559734284877777099609375,
        "lon": 33.35621499999999883812051848508417606353759765625
    },
    "last_point": {
        "ts": "2026-06-03T05:51:33+00:00",
        "lat": 34.71733329999999995152393239550292491912841796875,
        "lon": 33.4336100000000016052581486292183399200439453125
    }
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 23:05 UTC 75.0%
  • Duration: 5h 14m
  • Radius: 38 meters
  • Data Points: 36 AIS positions
  • Centroid: 34.7167, 33.3563
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 38.2000000000000028421709430404007434844970703125,
    "duration_minutes": 314.6000000000000227373675443232059478759765625,
    "points": 36,
    "centroid": {
        "lat": 34.71671754722222402733677881769835948944091796875,
        "lon": 33.3563024527777685079854563809931278228759765625
    },
    "bbox": {
        "min_lat": 34.71656329999999712754288339056074619293212890625,
        "min_lon": 33.35599830000000309837560052983462810516357421875,
        "max_lat": 34.71697999999999950659912428818643093109130859375,
        "max_lon": 33.35656999999999783312887302599847316741943359375
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 22:02 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 6h 30m
  • Data Points: 52 AIS positions
  • Period: 2026-06-02T22:56:51+00:00 to 2026-06-03T05:27:22+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 390.5,
    "points_in_zone": 52,
    "first_point": {
        "ts": "2026-06-02T22:56:51+00:00",
        "lat": 34.71663000000000209865902434103190898895263671875,
        "lon": 33.35635169999999760648279334418475627899169921875
    },
    "last_point": {
        "ts": "2026-06-03T05:27:22+00:00",
        "lat": 34.71647829999999856909198570065200328826904296875,
        "lon": 33.35566829999999782785380375571548938751220703125
    }
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 22:02 UTC 75.0%
  • Duration: 6h 17m
  • Radius: 37 meters
  • Data Points: 48 AIS positions
  • Centroid: 34.7167, 33.3563
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 37.39999999999999857891452847979962825775146484375,
    "duration_minutes": 377.6000000000000227373675443232059478759765625,
    "points": 48,
    "centroid": {
        "lat": 34.71671524583332058000451070256531238555908203125,
        "lon": 33.35628399166666469000119832344353199005126953125
    },
    "bbox": {
        "min_lat": 34.71656329999999712754288339056074619293212890625,
        "min_lon": 33.35599830000000309837560052983462810516357421875,
        "max_lat": 34.71697999999999950659912428818643093109130859375,
        "max_lon": 33.35656999999999783312887302599847316741943359375
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 21:02 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 6h 31m
  • Data Points: 51 AIS positions
  • Period: 2026-06-02T21:50:47+00:00 to 2026-06-03T04:22:35+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 391.80000000000001136868377216160297393798828125,
    "points_in_zone": 51,
    "first_point": {
        "ts": "2026-06-02T21:50:47+00:00",
        "lat": 34.71681170000000093978087534196674823760986328125,
        "lon": 33.35612830000000172958607436157763004302978515625
    },
    "last_point": {
        "ts": "2026-06-03T04:22:35+00:00",
        "lat": 34.69885670000000033041942515410482883453369140625,
        "lon": 33.3680882999999965932147460989654064178466796875
    }
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 21:02 UTC 75.0%
  • Duration: 6h 29m
  • Radius: 37 meters
  • Data Points: 50 AIS positions
  • Centroid: 34.7167, 33.3563
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 36.7000000000000028421709430404007434844970703125,
    "duration_minutes": 389.6000000000000227373675443232059478759765625,
    "points": 50,
    "centroid": {
        "lat": 34.71671933599998993713597883470356464385986328125,
        "lon": 33.35627793200000468232246930710971355438232421875
    },
    "bbox": {
        "min_lat": 34.71656329999999712754288339056074619293212890625,
        "min_lon": 33.35599830000000309837560052983462810516357421875,
        "max_lat": 34.71697999999999950659912428818643093109130859375,
        "max_lon": 33.35656999999999783312887302599847316741943359375
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 20:05 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 6h 30m
  • Data Points: 56 AIS positions
  • Period: 2026-06-02T20:56:43+00:00 to 2026-06-03T03:27:09+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 390.3999999999999772626324556767940521240234375,
    "points_in_zone": 56,
    "first_point": {
        "ts": "2026-06-02T20:56:43+00:00",
        "lat": 34.71663670000000223581082536838948726654052734375,
        "lon": 33.35719000000000278305378742516040802001953125
    },
    "last_point": {
        "ts": "2026-06-03T03:27:09+00:00",
        "lat": 34.71695170000000274512785836122930049896240234375,
        "lon": 33.35603499999999854708221391774713993072509765625
    }
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 20:05 UTC 75.0%
  • Duration: 6h 30m
  • Radius: 77 meters
  • Data Points: 56 AIS positions
  • Centroid: 34.7167, 33.3564
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 77,
    "duration_minutes": 390.3999999999999772626324556767940521240234375,
    "points": 56,
    "centroid": {
        "lat": 34.716701192857129854019149206578731536865234375,
        "lon": 33.3563532732142817849307903088629245758056640625
    },
    "bbox": {
        "min_lat": 34.71656329999999712754288339056074619293212890625,
        "min_lon": 33.35601669999999785432009957730770111083984375,
        "max_lat": 34.71695170000000274512785836122930049896240234375,
        "max_lon": 33.35719000000000278305378742516040802001953125
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 19:08 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 6h 33m
  • Data Points: 60 AIS positions
  • Period: 2026-06-02T19:50:35+00:00 to 2026-06-03T02:24:06+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 393.5,
    "points_in_zone": 60,
    "first_point": {
        "ts": "2026-06-02T19:50:35+00:00",
        "lat": 34.71720169999999683341229683719575405120849609375,
        "lon": 33.35790999999999684177964809350669384002685546875
    },
    "last_point": {
        "ts": "2026-06-03T02:24:06+00:00",
        "lat": 34.71674999999999755573298898525536060333251953125,
        "lon": 33.3561466999999964855305734090507030487060546875
    }
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 19:08 UTC 75.0%
  • Duration: 6h 33m
  • Radius: 132 meters
  • Data Points: 60 AIS positions
  • Centroid: 34.7168, 33.3566
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 131.900000000000005684341886080801486968994140625,
    "duration_minutes": 393.5,
    "points": 60,
    "centroid": {
        "lat": 34.71675608333331553012612857855856418609619140625,
        "lon": 33.3565753883333258045240654610097408294677734375
    },
    "bbox": {
        "min_lat": 34.71656329999999712754288339056074619293212890625,
        "min_lon": 33.35611329999999696838131058029830455780029296875,
        "max_lat": 34.71726170000000166737663676030933856964111328125,
        "max_lon": 33.35790999999999684177964809350669384002685546875
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 18:05 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 6h 27m
  • Data Points: 56 AIS positions
  • Period: 2026-06-02T18:53:29+00:00 to 2026-06-03T01:21:00+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 387.5,
    "points_in_zone": 56,
    "first_point": {
        "ts": "2026-06-02T18:53:29+00:00",
        "lat": 34.71766170000000073514456744305789470672607421875,
        "lon": 33.357928299999997534541762433946132659912109375
    },
    "last_point": {
        "ts": "2026-06-03T01:21:00+00:00",
        "lat": 34.71674329999999741858118795789778232574462890625,
        "lon": 33.35626830000000353493305738084018230438232421875
    }
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 18:05 UTC 75.0%
  • Duration: 6h 27m
  • Radius: 144 meters
  • Data Points: 56 AIS positions
  • Centroid: 34.7169, 33.3568
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 143.599999999999994315658113919198513031005859375,
    "duration_minutes": 387.5,
    "points": 56,
    "centroid": {
        "lat": 34.71686803571427759607104235328733921051025390625,
        "lon": 33.35675318392856780747024458833038806915283203125
    },
    "bbox": {
        "min_lat": 34.71656329999999712754288339056074619293212890625,
        "min_lon": 33.35611329999999696838131058029830455780029296875,
        "max_lat": 34.7177717000000001235093805007636547088623046875,
        "max_lon": 33.357928299999997534541762433946132659912109375
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 17:06 UTC 75.0%
  • Duration: 6h 36m
  • Radius: 122 meters
  • Data Points: 53 AIS positions
  • Centroid: 34.7170, 33.3569
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 122.2999999999999971578290569595992565155029296875,
    "duration_minutes": 396.6000000000000227373675443232059478759765625,
    "points": 53,
    "centroid": {
        "lat": 34.71699216981131286274830927141010761260986328125,
        "lon": 33.3569499660377317695747478865087032318115234375
    },
    "bbox": {
        "min_lat": 34.71656329999999712754288339056074619293212890625,
        "min_lon": 33.35611329999999696838131058029830455780029296875,
        "max_lat": 34.7177717000000001235093805007636547088623046875,
        "max_lon": 33.3579782999999991943695931695401668548583984375
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 17:00 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 6h 36m
  • Data Points: 53 AIS positions
  • Period: 2026-06-02T17:41:21+00:00 to 2026-06-03T00:17:57+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 396.6000000000000227373675443232059478759765625,
    "points_in_zone": 53,
    "first_point": {
        "ts": "2026-06-02T17:41:21+00:00",
        "lat": 34.71769499999999908368408796377480030059814453125,
        "lon": 33.3579782999999991943695931695401668548583984375
    },
    "last_point": {
        "ts": "2026-06-03T00:17:57+00:00",
        "lat": 34.71658500000000202589944819919764995574951171875,
        "lon": 33.35656999999999783312887302599847316741943359375
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 2, 2026 16:12 UTC 72/100
Vessel A: SOGLASIYE (SPRING FORTUNE) RUSSIA
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 35 meters
  • Average Distance: 124 meters
  • Duration: 38 minutes
  • Period: 2026-06-02T16:12:40+00:00 to 2026-06-02T16:50:39+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 72/100

Moderate-confidence STS candidate. Two tankers (SPRING FORTUNE and SEAGAS MAJOR) maintained close proximity (min 35m, avg 124m) for 38 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 Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 35m, avg 124m
Duration5/25Duration 38 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency12/15Distance variance ±48m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-02T23:45:10.107311+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273277180,
        "imo": 9386536,
        "name": "SPRING FORTUNE",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 35.2999999999999971578290569595992565155029296875,
    "avg_distance_m": 124.2999999999999971578290569595992565155029296875,
    "distance_consistency_m": 48.2999999999999971578290569595992565155029296875,
    "duration_minutes": 38,
    "overlap_duration_s": 2279,
    "speed_a_avg": 0.200000000000000011102230246251565404236316680908203125,
    "speed_a_std": 0.13000000000000000444089209850062616169452667236328125,
    "speed_b_avg": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_b_std": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.200000000000000011102230246251565404236316680908203125,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0.1700000000000000122124532708767219446599483489990234375,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-06-02T16:12:40+00:00",
        "end": "2026-06-02T16:50:39+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 72,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 35m, avg 124m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 38 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b148m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SPRING FORTUNE and SEAGAS MAJOR) maintained close proximity (min 35m, avg 124m) for 38 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 Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717303799999999824876795173622667789459228515625,
            "lon": 35.99885760000000090030880528502166271209716796875
        },
        "time_window": {
            "start_ts": "2026-06-02T16:12:40+00:00",
            "end_ts": "2026-06-02T16:50:39+00:00"
        },
        "searched_at": "2026-06-02T23:45:10.107311+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 2, 2026 16:12 UTC 75/100
Vessel A: HORAE (HORAE) Panama
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 1 meters
  • Average Distance: 4 meters
  • Duration: 34 minutes
  • Period: 2026-06-02T16:21:52+00:00 to 2026-06-02T16:56:32+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (HORAE and SEAGAS MAJOR) maintained close proximity (min 1m, avg 4m) for 35 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 Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 1m, avg 4m
Duration5/25Duration 35 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±3m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-02T19:30:02.252703+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352179000,
        "imo": 9413004,
        "name": "HORAE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 1,
    "avg_distance_m": 3.899999999999999911182158029987476766109466552734375,
    "distance_consistency_m": 3,
    "duration_minutes": 34.7000000000000028421709430404007434844970703125,
    "overlap_duration_s": 2080,
    "speed_a_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_b_std": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.1700000000000000122124532708767219446599483489990234375,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-06-02T16:21:52+00:00",
        "end": "2026-06-02T16:56:32+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 1m, avg 4m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 35 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (HORAE and SEAGAS MAJOR) maintained close proximity (min 1m, avg 4m) for 35 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 Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717122799999998505882103927433490753173828125,
            "lon": 35.99934879999999992605808074586093425750732421875
        },
        "time_window": {
            "start_ts": "2026-06-02T16:12:03+00:00",
            "end_ts": "2026-06-02T16:56:32+00:00"
        },
        "searched_at": "2026-06-02T19:30:02.252703+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 2, 2026 16:06 UTC 68/100
Vessel A: IMO 9340489 (EASTERLY AS OLIVIA) MARSHALL ISLANDS
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 29 meters
  • Average Distance: 99 meters
  • Duration: 41 minutes
  • Period: 2026-06-02T16:15:53+00:00 to 2026-06-02T16:57:04+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 68/100

Moderate-confidence STS candidate. Two tankers (EASTERLY AS OLIVIA and SEAGAS MAJOR) maintained close proximity (min 29m, avg 99m) for 41 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.2 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 29m, avg 99m
Duration5/25Duration 41 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±58m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-02T19:15:08.104671+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538009615,
        "imo": 9340489,
        "name": "EASTERLY AS OLIVIA",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 28.800000000000000710542735760100185871124267578125,
    "avg_distance_m": 99.099999999999994315658113919198513031005859375,
    "distance_consistency_m": 58.5,
    "duration_minutes": 41.2000000000000028421709430404007434844970703125,
    "overlap_duration_s": 2471,
    "speed_a_avg": 0.190000000000000002220446049250313080847263336181640625,
    "speed_a_std": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_b_avg": 0.190000000000000002220446049250313080847263336181640625,
    "speed_b_std": 0.14000000000000001332267629550187848508358001708984375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.190000000000000002220446049250313080847263336181640625,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.190000000000000002220446049250313080847263336181640625,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-06-02T16:15:53+00:00",
        "end": "2026-06-02T16:57:04+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 68,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 29m, avg 99m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 41 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b158m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (EASTERLY AS OLIVIA and SEAGAS MAJOR) maintained close proximity (min 29m, avg 99m) for 41 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.2 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.71726340000000021746018319390714168548583984375,
            "lon": 35.99885859999999837555151316337287425994873046875
        },
        "time_window": {
            "start_ts": "2026-06-02T16:06:46+00:00",
            "end_ts": "2026-06-02T16:57:04+00:00"
        },
        "searched_at": "2026-06-02T19:15:08.104671+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 2, 2026 16:04 UTC 75/100
Vessel A: IMO 9448499 (GAZ SERENITY) PANAMA
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 1 meters
  • Average Distance: 3 meters
  • Duration: 38 minutes
  • Period: 2026-06-02T16:16:55+00:00 to 2026-06-02T16:55:23+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (GAZ SERENITY and SEAGAS MAJOR) maintained close proximity (min 1m, avg 3m) for 38 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 Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 1m, avg 3m
Duration5/25Duration 38 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±3m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-03T00:00:08.061072+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 372961000,
        "imo": 9448499,
        "name": "GAZ SERENITY",
        "flag": "PANAMA"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 0.59999999999999997779553950749686919152736663818359375,
    "avg_distance_m": 3.29999999999999982236431605997495353221893310546875,
    "distance_consistency_m": 3.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 38.5,
    "overlap_duration_s": 2308,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-06-02T16:16:55+00:00",
        "end": "2026-06-02T16:55:23+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 1m, avg 3m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 38 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (GAZ SERENITY and SEAGAS MAJOR) maintained close proximity (min 1m, avg 3m) for 38 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 Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717107399999999728379407315514981746673583984375,
            "lon": 35.99935690000000221289155888371169567108154296875
        },
        "time_window": {
            "start_ts": "2026-06-02T16:04:25+00:00",
            "end_ts": "2026-06-02T16:55:23+00:00"
        },
        "searched_at": "2026-06-03T00:00:08.061072+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 2, 2026 16:04 UTC 80/100
Vessel A: IMO 9611541 (THALIA) Liberia
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 2 meters
  • Average Distance: 5 meters
  • Duration: 52 minutes
  • Period: 2026-06-02T16:04:20+00:00 to 2026-06-02T16:56:26+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (THALIA and SEAGAS MAJOR) maintained close proximity (min 2m, avg 5m) for 52 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 Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 2m, avg 5m
Duration10/25Duration 52 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±4m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-03T00:00:02.075717+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 1.600000000000000088817841970012523233890533447265625,
    "avg_distance_m": 4.79999999999999982236431605997495353221893310546875,
    "distance_consistency_m": 4,
    "duration_minutes": 52.10000000000000142108547152020037174224853515625,
    "overlap_duration_s": 3126,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_b_std": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.1499999999999999944488848768742172978818416595458984375,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-06-02T16:04:20+00:00",
        "end": "2026-06-02T16:56:26+00:00"
    },
    "points_count": {
        "vessel_a": 16,
        "vessel_b": 16
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 2m, avg 5m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 52 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (THALIA and SEAGAS MAJOR) maintained close proximity (min 2m, avg 5m) for 52 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 Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717117999999999256033333949744701385498046875,
            "lon": 35.99935430000000025074768927879631519317626953125
        },
        "time_window": {
            "start_ts": "2026-06-02T16:04:20+00:00",
            "end_ts": "2026-06-02T16:56:26+00:00"
        },
        "searched_at": "2026-06-03T00:00:02.075717+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 2, 2026 16:01 UTC 75/100
Vessel A: IMO 9135793 (SEAGAS MAJOR) LIBERIA
Vessel B: IMO 9674713 (HIGH FREEDOM) Liberia
  • Minimum Distance: 2 meters
  • Average Distance: 7 meters
  • Duration: 36 minutes
  • Period: 2026-06-02T16:01:23+00:00 to 2026-06-02T16:38:16+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and HIGH FREEDOM) maintained close proximity (min 2m, avg 7m) for 37 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 Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 2m, avg 7m
Duration5/25Duration 37 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±6m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-02T22:30:12.458563+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 636022700,
        "imo": 9674713,
        "name": "HIGH FREEDOM",
        "flag": "Liberia"
    },
    "min_distance_m": 1.5,
    "avg_distance_m": 7.29999999999999982236431605997495353221893310546875,
    "distance_consistency_m": 5.5,
    "duration_minutes": 36.89999999999999857891452847979962825775146484375,
    "overlap_duration_s": 2213,
    "speed_a_avg": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_a_std": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1499999999999999944488848768742172978818416595458984375,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-06-02T16:01:23+00:00",
        "end": "2026-06-02T16:38:16+00:00"
    },
    "points_count": {
        "vessel_a": 10,
        "vessel_b": 10
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 2m, avg 7m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 37 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b16m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and HIGH FREEDOM) maintained close proximity (min 2m, avg 7m) for 37 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 Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.71709870000000108802851173095405101776123046875,
            "lon": 35.9993410000000011450538295321166515350341796875
        },
        "time_window": {
            "start_ts": "2026-06-02T16:01:23+00:00",
            "end_ts": "2026-06-02T16:38:16+00:00"
        },
        "searched_at": "2026-06-02T22:30:12.458563+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 2, 2026 16:01 UTC 80/100
Vessel A: IMO 9956939 (TRANS FJORD) Panama
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 0 meters
  • Average Distance: 3 meters
  • Duration: 46 minutes
  • Period: 2026-06-02T16:06:12+00:00 to 2026-06-02T16:53:07+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (TRANS FJORD and SEAGAS MAJOR) maintained close proximity (min 0m, avg 3m) for 47 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 Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 3m
Duration10/25Duration 47 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-02T22:45:10.704287+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003272,
        "imo": 9956939,
        "name": "TRANS FJORD",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 0.200000000000000011102230246251565404236316680908203125,
    "avg_distance_m": 3,
    "distance_consistency_m": 1.5,
    "duration_minutes": 46.89999999999999857891452847979962825775146484375,
    "overlap_duration_s": 2815,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-06-02T16:06:12+00:00",
        "end": "2026-06-02T16:53:07+00:00"
    },
    "points_count": {
        "vessel_a": 11,
        "vessel_b": 11
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 3m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 47 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS FJORD and SEAGAS MAJOR) maintained close proximity (min 0m, avg 3m) for 47 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 Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717110600000001596754373167641460895538330078125,
            "lon": 35.9993625999999977693732944317162036895751953125
        },
        "time_window": {
            "start_ts": "2026-06-02T16:01:23+00:00",
            "end_ts": "2026-06-02T16:53:07+00:00"
        },
        "searched_at": "2026-06-02T22:45:10.704287+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 2, 2026 16:01 UTC 75/100
Vessel A: IMO 9895226 (NISSOS ANTIMILOS) MARSHALL ISLANDS
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 2 meters
  • Average Distance: 5 meters
  • Duration: 37 minutes
  • Period: 2026-06-02T16:06:56+00:00 to 2026-06-02T16:44:17+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (NISSOS ANTIMILOS and SEAGAS MAJOR) maintained close proximity (min 2m, avg 5m) for 37 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 2m, avg 5m
Duration5/25Duration 37 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±3m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-02T22:45:14.551876+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538008919,
        "imo": 9895226,
        "name": "NISSOS ANTIMILOS",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 2.20000000000000017763568394002504646778106689453125,
    "avg_distance_m": 5.20000000000000017763568394002504646778106689453125,
    "distance_consistency_m": 3.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 37.39999999999999857891452847979962825775146484375,
    "overlap_duration_s": 2241,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.200000000000000011102230246251565404236316680908203125,
    "speed_b_std": 0.179999999999999993338661852249060757458209991455078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.200000000000000011102230246251565404236316680908203125,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-06-02T16:06:56+00:00",
        "end": "2026-06-02T16:44:17+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 2m, avg 5m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 37 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (NISSOS ANTIMILOS and SEAGAS MAJOR) maintained close proximity (min 2m, avg 5m) for 37 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717141500000000320369508699513971805572509765625,
            "lon": 35.99936579999999963774826028384268283843994140625
        },
        "time_window": {
            "start_ts": "2026-06-02T16:01:23+00:00",
            "end_ts": "2026-06-02T16:44:17+00:00"
        },
        "searched_at": "2026-06-02T22:45:14.551876+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 2, 2026 15:56 UTC 80/100
Vessel A: Denver (DENVER) SIERRA LEONE
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 1 meters
  • Average Distance: 5 meters
  • Duration: 56 minutes
  • Period: 2026-06-02T15:56:43+00:00 to 2026-06-02T16:53:28+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (DENVER and SEAGAS MAJOR) maintained close proximity (min 1m, avg 5m) for 57 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 1m, avg 5m
Duration10/25Duration 57 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±3m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-02T20:15:01.966281+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 667001964,
        "imo": 9382712,
        "name": "DENVER",
        "flag": "SIERRA LEONE"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 1.3000000000000000444089209850062616169452667236328125,
    "avg_distance_m": 4.79999999999999982236431605997495353221893310546875,
    "distance_consistency_m": 3.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 56.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 3405,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-06-02T15:56:43+00:00",
        "end": "2026-06-02T16:53:28+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 1m, avg 5m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 57 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (DENVER and SEAGAS MAJOR) maintained close proximity (min 1m, avg 5m) for 57 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.7171096000000005687979864887893199920654296875,
            "lon": 35.9993740000000030931914807297289371490478515625
        },
        "time_window": {
            "start_ts": "2026-06-02T15:56:43+00:00",
            "end_ts": "2026-06-02T16:53:28+00:00"
        },
        "searched_at": "2026-06-02T20:15:01.966281+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 2, 2026 15:54 UTC 75/100
Vessel A: IMO 9135793 (SEAGAS MAJOR) LIBERIA
Vessel B: IMO 9674713 (HIGH FREEDOM) Liberia
  • Minimum Distance: 2 meters
  • Average Distance: 7 meters
  • Duration: 44 minutes
  • Period: 2026-06-02T15:53:37+00:00 to 2026-06-02T16:38:16+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and HIGH FREEDOM) maintained close proximity (min 2m, avg 7m) for 45 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 Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 2m, avg 7m
Duration5/25Duration 45 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±5m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-02T18:45:04.094579+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 636022700,
        "imo": 9674713,
        "name": "HIGH FREEDOM",
        "flag": "Liberia"
    },
    "min_distance_m": 1.5,
    "avg_distance_m": 7.20000000000000017763568394002504646778106689453125,
    "distance_consistency_m": 5.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 44.60000000000000142108547152020037174224853515625,
    "overlap_duration_s": 2679,
    "speed_a_avg": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_a_std": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1499999999999999944488848768742172978818416595458984375,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-06-02T15:53:37+00:00",
        "end": "2026-06-02T16:38:16+00:00"
    },
    "points_count": {
        "vessel_a": 11,
        "vessel_b": 11
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 2m, avg 7m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 45 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: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and HIGH FREEDOM) maintained close proximity (min 2m, avg 7m) for 45 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 Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717099799999999731880961917340755462646484375,
            "lon": 35.9993477000000012822056305594742298126220703125
        },
        "time_window": {
            "start_ts": "2026-06-02T15:54:18+00:00",
            "end_ts": "2026-06-02T16:38:16+00:00"
        },
        "searched_at": "2026-06-02T18:45:04.094579+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 2, 2026 15:53 UTC 76/100
Vessel A: IMO 9135793 (SEAGAS MAJOR) LIBERIA
Vessel B: SOGLASIYE (SPRING FORTUNE) RUSSIA
  • Minimum Distance: 33 meters
  • Average Distance: 127 meters
  • Duration: 1h 2m
  • Period: 2026-06-02T15:53:37+00:00 to 2026-06-02T16:55:40+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.4 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 76/100

Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and SPRING FORTUNE) maintained close proximity (min 33m, avg 127m) for 62 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.4 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 33m, avg 127m
Duration15/25Duration 62 minutes
Speed Stability14/20both nearly stationary; somewhat variable speeds
Distance Consistency12/15Distance variance ±43m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-02T17:45:09.715287+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 273277180,
        "imo": 9386536,
        "name": "SPRING FORTUNE",
        "flag": "RUSSIA"
    },
    "min_distance_m": 33.2000000000000028421709430404007434844970703125,
    "avg_distance_m": 126.7000000000000028421709430404007434844970703125,
    "distance_consistency_m": 42.7999999999999971578290569595992565155029296875,
    "duration_minutes": 62,
    "overlap_duration_s": 3723,
    "speed_a_avg": 0.13000000000000000444089209850062616169452667236328125,
    "speed_a_std": 0.14000000000000001332267629550187848508358001708984375,
    "speed_b_avg": 0.36999999999999999555910790149937383830547332763671875,
    "speed_b_std": 0.5500000000000000444089209850062616169452667236328125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.13000000000000000444089209850062616169452667236328125,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.36999999999999999555910790149937383830547332763671875,
            "max_sog": 1.6999999999999999555910790149937383830547332763671875
        }
    },
    "time_window": {
        "start": "2026-06-02T15:53:37+00:00",
        "end": "2026-06-02T16:55:40+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 76,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 33m, avg 127m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 62 minutes"
            },
            "speed_stability": {
                "score": 14,
                "max": 20,
                "detail": "both nearly stationary; somewhat variable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b143m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and SPRING FORTUNE) maintained close proximity (min 33m, avg 127m) for 62 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.4 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717056899999999330930222640745341777801513671875,
            "lon": 35.9988656000000020185325411148369312286376953125
        },
        "time_window": {
            "start_ts": "2026-06-02T15:53:37+00:00",
            "end_ts": "2026-06-02T16:55:40+00:00"
        },
        "searched_at": "2026-06-02T17:45:09.715287+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 2, 2026 15:53 UTC 70/100
Vessel A: IMO 9135793 (SEAGAS MAJOR) LIBERIA
Vessel B: IMO 9448499 (GAZ SERENITY) PANAMA
  • Minimum Distance: 1 meters
  • Average Distance: 36 meters
  • Duration: 58 minutes
  • Period: 2026-06-02T15:53:37+00:00 to 2026-06-02T16:52:31+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and GAZ SERENITY) maintained close proximity (min 1m, avg 36m) for 59 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 1m, avg 36m
Duration10/25Duration 59 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency5/15Distance variance ±120m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-02T17:45:12.313495+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 372961000,
        "imo": 9448499,
        "name": "GAZ SERENITY",
        "flag": "PANAMA"
    },
    "min_distance_m": 0.90000000000000002220446049250313080847263336181640625,
    "avg_distance_m": 35.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 119.7999999999999971578290569595992565155029296875,
    "duration_minutes": 58.89999999999999857891452847979962825775146484375,
    "overlap_duration_s": 3534,
    "speed_a_avg": 0.13000000000000000444089209850062616169452667236328125,
    "speed_a_std": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.13000000000000000444089209850062616169452667236328125,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-06-02T15:53:37+00:00",
        "end": "2026-06-02T16:52:31+00:00"
    },
    "points_count": {
        "vessel_a": 14,
        "vessel_b": 14
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 1m, avg 36m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 59 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 5,
                "max": 15,
                "detail": "Distance variance \u00b1120m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SEAGAS MAJOR and GAZ SERENITY) maintained close proximity (min 1m, avg 36m) for 59 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.7171929000000005771653377451002597808837890625,
            "lon": 35.9991150999999973691956256516277790069580078125
        },
        "time_window": {
            "start_ts": "2026-06-02T15:53:37+00:00",
            "end_ts": "2026-06-02T16:52:31+00:00"
        },
        "searched_at": "2026-06-02T17:45:12.313495+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 2, 2026 15:53 UTC 80/100
Vessel A: IMO 9956939 (TRANS FJORD) Panama
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 0 meters
  • Average Distance: 3 meters
  • Duration: 58 minutes
  • Period: 2026-06-02T15:54:12+00:00 to 2026-06-02T16:53:07+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (TRANS FJORD and SEAGAS MAJOR) maintained close proximity (min 0m, avg 3m) for 59 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 Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 3m
Duration10/25Duration 59 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-02T18:30:01.458453+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003272,
        "imo": 9956939,
        "name": "TRANS FJORD",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 0.200000000000000011102230246251565404236316680908203125,
    "avg_distance_m": 3.20000000000000017763568394002504646778106689453125,
    "distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 58.89999999999999857891452847979962825775146484375,
    "overlap_duration_s": 3535,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0.14000000000000001332267629550187848508358001708984375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-06-02T15:54:12+00:00",
        "end": "2026-06-02T16:53:07+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 3m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 59 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS FJORD and SEAGAS MAJOR) maintained close proximity (min 0m, avg 3m) for 59 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 Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717112199999998978228177293203771114349365234375,
            "lon": 35.999366100000003143577487207949161529541015625
        },
        "time_window": {
            "start_ts": "2026-06-02T15:53:37+00:00",
            "end_ts": "2026-06-02T16:53:07+00:00"
        },
        "searched_at": "2026-06-02T18:30:01.458453+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 2, 2026 15:53 UTC 63/100
Vessel A: IMO 9328144 (AHINOS) Liberia
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 118 meters
  • Average Distance: 161 meters
  • Duration: 44 minutes
  • Period: 2026-06-02T15:46:19+00:00 to 2026-06-02T16:30:59+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 63/100

Moderate-confidence STS candidate. Two tankers (AHINOS and SEAGAS MAJOR) maintained close proximity (min 118m, avg 161m) for 45 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness20/25Min distance 118m, avg 161m
Duration5/25Duration 45 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±59m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-02T18:30:09.392765+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636024537,
        "imo": 9328144,
        "name": "AHINOS",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 118,
    "avg_distance_m": 161.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 59.2000000000000028421709430404007434844970703125,
    "duration_minutes": 44.7000000000000028421709430404007434844970703125,
    "overlap_duration_s": 2680,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-06-02T15:46:19+00:00",
        "end": "2026-06-02T16:30:59+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 63,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 118m, avg 161m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 45 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b159m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (AHINOS and SEAGAS MAJOR) maintained close proximity (min 118m, avg 161m) for 45 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.7172565999999989116986398585140705108642578125,
            "lon": 35.998812700000001996158971451222896575927734375
        },
        "time_window": {
            "start_ts": "2026-06-02T15:53:37+00:00",
            "end_ts": "2026-06-02T16:30:59+00:00"
        },
        "searched_at": "2026-06-02T18:30:09.392765+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jun 2, 2026 15:53 UTC 77/100
Vessel A: IMO 9895226 (NISSOS ANTIMILOS) MARSHALL ISLANDS
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 2 meters
  • Average Distance: 9 meters
  • Duration: 49 minutes
  • Period: 2026-06-02T15:54:36+00:00 to 2026-06-02T16:44:17+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 77/100

Moderate-confidence STS candidate. Two tankers (NISSOS ANTIMILOS and SEAGAS MAJOR) maintained close proximity (min 2m, avg 9m) for 50 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 Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 2m, avg 9m
Duration10/25Duration 50 minutes
Speed Stability17/20both nearly stationary; stable speeds
Distance Consistency15/15Distance variance ±14m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538008919,
        "imo": 9895226,
        "name": "NISSOS ANTIMILOS",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 2.20000000000000017763568394002504646778106689453125,
    "avg_distance_m": 9,
    "distance_consistency_m": 13.699999999999999289457264239899814128875732421875,
    "duration_minutes": 49.7000000000000028421709430404007434844970703125,
    "overlap_duration_s": 2981,
    "speed_a_avg": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.38000000000000000444089209850062616169452667236328125,
    "speed_b_avg": 0.179999999999999993338661852249060757458209991455078125,
    "speed_b_std": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.11000000000000000055511151231257827021181583404541015625,
            "max_sog": 1.3000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0.179999999999999993338661852249060757458209991455078125,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-06-02T15:54:36+00:00",
        "end": "2026-06-02T16:44:17+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 77,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 2m, avg 9m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 50 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; 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: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (NISSOS ANTIMILOS and SEAGAS MAJOR) maintained close proximity (min 2m, avg 9m) for 50 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 Eastern Mediterranean Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 2, 2026 15:45 UTC 75/100
Vessel A: DORIN (DORIN) CAMEROON
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 3 meters
  • Average Distance: 8 meters
  • Duration: 35 minutes
  • Period: 2026-06-02T15:45:40+00:00 to 2026-06-02T16:20:41+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (DORIN and SEAGAS MAJOR) maintained close proximity (min 3m, avg 8m) for 35 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 3m, avg 8m
Duration5/25Duration 35 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±4m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-02T18:30:04.220475+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 613414203,
        "imo": 9290828,
        "name": "DORIN",
        "flag": "CAMEROON"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 3.399999999999999911182158029987476766109466552734375,
    "avg_distance_m": 7.5999999999999996447286321199499070644378662109375,
    "distance_consistency_m": 4.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 35,
    "overlap_duration_s": 2101,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.200000000000000011102230246251565404236316680908203125,
    "speed_b_std": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.200000000000000011102230246251565404236316680908203125,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-06-02T15:45:40+00:00",
        "end": "2026-06-02T16:20:41+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 3m, avg 8m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 35 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (DORIN and SEAGAS MAJOR) maintained close proximity (min 3m, avg 8m) for 35 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.71711499999999972487785271368920803070068359375,
            "lon": 35.99934970000000333811840391717851161956787109375
        },
        "time_window": {
            "start_ts": "2026-06-02T15:45:40+00:00",
            "end_ts": "2026-06-02T16:20:41+00:00"
        },
        "searched_at": "2026-06-02T18:30:04.220475+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jun 2, 2026 15:44 UTC 85/100
Vessel A: IMO 9611541 (THALIA) Liberia
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 2 meters
  • Average Distance: 5 meters
  • Duration: 1h 11m
  • Period: 2026-06-02T15:44:50+00:00 to 2026-06-02T16:56:26+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (THALIA and SEAGAS MAJOR) maintained close proximity (min 2m, avg 4m) for 72 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 Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 2m, avg 4m
Duration15/25Duration 72 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±4m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 1.600000000000000088817841970012523233890533447265625,
    "avg_distance_m": 4.5,
    "distance_consistency_m": 3.5,
    "duration_minutes": 71.599999999999994315658113919198513031005859375,
    "overlap_duration_s": 4296,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.14000000000000001332267629550187848508358001708984375,
    "speed_b_std": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.14000000000000001332267629550187848508358001708984375,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-06-02T15:44:50+00:00",
        "end": "2026-06-02T16:56:26+00:00"
    },
    "points_count": {
        "vessel_a": 22,
        "vessel_b": 22
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 2m, avg 4m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 72 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (THALIA and SEAGAS MAJOR) maintained close proximity (min 2m, avg 4m) for 72 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 Eastern Mediterranean Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 14:41 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 1h 2m
  • Data Points: 14 AIS positions
  • Period: 2026-06-02T14:41:30+00:00 to 2026-06-02T15:44:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 62.5,
    "points_in_zone": 14,
    "first_point": {
        "ts": "2026-06-02T14:41:30+00:00",
        "lat": 34.7176582999999965295501169748604297637939453125,
        "lon": 33.35783330000000290738171315751969814300537109375
    },
    "last_point": {
        "ts": "2026-06-02T15:44:02+00:00",
        "lat": 34.716634999999996580299921333789825439453125,
        "lon": 33.3555300000000016780177247710525989532470703125
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 13:12 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 1h 12m
  • Data Points: 17 AIS positions
  • Period: 2026-06-02T13:12:44+00:00 to 2026-06-02T14:25:25+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 72.7000000000000028421709430404007434844970703125,
    "points_in_zone": 17,
    "first_point": {
        "ts": "2026-06-02T13:12:44+00:00",
        "lat": 34.717753299999998262137523852288722991943359375,
        "lon": 33.3579383000000007086782716214656829833984375
    },
    "last_point": {
        "ts": "2026-06-02T14:25:25+00:00",
        "lat": 34.71768999999999749661583337001502513885498046875,
        "lon": 33.35783670000000000754880602471530437469482421875
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 12:00 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 2h 24m
  • Data Points: 23 AIS positions
  • Period: 2026-06-02T12:00:57+00:00 to 2026-06-02T14:25:25+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 144.5,
    "points_in_zone": 23,
    "first_point": {
        "ts": "2026-06-02T12:00:57+00:00",
        "lat": 34.71814830000000284826455754227936267852783203125,
        "lon": 33.35755000000000336513039655983448028564453125
    },
    "last_point": {
        "ts": "2026-06-02T14:25:25+00:00",
        "lat": 34.71768999999999749661583337001502513885498046875,
        "lon": 33.35783670000000000754880602471530437469482421875
    }
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 12:00 UTC 75.0%
  • Duration: 2h 24m
  • Radius: 48 meters
  • Data Points: 23 AIS positions
  • Centroid: 34.7178, 33.3579
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 48.10000000000000142108547152020037174224853515625,
    "duration_minutes": 144.5,
    "points": 23,
    "centroid": {
        "lat": 34.71782108695651203333909506909549236297607421875,
        "lon": 33.3578945000000004483808879740536212921142578125
    },
    "bbox": {
        "min_lat": 34.717545000000001209627953357994556427001953125,
        "min_lon": 33.35755000000000336513039655983448028564453125,
        "max_lat": 34.71814830000000284826455754227936267852783203125,
        "max_lon": 33.3581199999999995498001226224005222320556640625
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 11:54 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 2h 31m
  • Data Points: 24 AIS positions
  • Period: 2026-06-02T11:54:13+00:00 to 2026-06-02T14:25:25+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 151.19999999999998863131622783839702606201171875,
    "points_in_zone": 24,
    "first_point": {
        "ts": "2026-06-02T11:54:13+00:00",
        "lat": 34.7179383000000001402440830133855342864990234375,
        "lon": 33.35781329999999655910869478248059749603271484375
    },
    "last_point": {
        "ts": "2026-06-02T14:25:25+00:00",
        "lat": 34.71768999999999749661583337001502513885498046875,
        "lon": 33.35783670000000000754880602471530437469482421875
    }
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 11:54 UTC 75.0%
  • Duration: 2h 31m
  • Radius: 48 meters
  • Data Points: 24 AIS positions
  • Centroid: 34.7178, 33.3579
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 47.5,
    "duration_minutes": 151.19999999999998863131622783839702606201171875,
    "points": 24,
    "centroid": {
        "lat": 34.71782597083332433385294280014932155609130859375,
        "lon": 33.35789111666667139388664509169757366180419921875
    },
    "bbox": {
        "min_lat": 34.717545000000001209627953357994556427001953125,
        "min_lon": 33.35755000000000336513039655983448028564453125,
        "max_lat": 34.71814830000000284826455754227936267852783203125,
        "max_lon": 33.3581199999999995498001226224005222320556640625
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 09:04 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 1h 38m
  • Data Points: 20 AIS positions
  • Period: 2026-06-02T09:04:46+00:00 to 2026-06-02T10:42:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 98,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-06-02T09:04:46+00:00",
        "lat": 34.71813829999999967412804835475981235504150390625,
        "lon": 33.35676000000000129830368678085505962371826171875
    },
    "last_point": {
        "ts": "2026-06-02T10:42:49+00:00",
        "lat": 34.70172500000000326281224261038005352020263671875,
        "lon": 33.35522499999999723740984336473047733306884765625
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jun 2, 2026 08:28 UTC 92/100
Vessel A: IMO 9328144 (AHINOS) Liberia
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 21 meters
  • Average Distance: 77 meters
  • Duration: 3h 13m
  • Period: 2026-06-02T08:28:20+00:00 to 2026-06-02T11:41:47+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.3 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 92/100

High-confidence STS candidate. Two tankers (AHINOS and SEAGAS MAJOR) maintained close proximity (min 21m, avg 77m) for 193 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 21m, avg 77m
Duration25/25Duration 193 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency12/15Distance variance ±48m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-06-02T12:00:11.480755+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636024537,
        "imo": 9328144,
        "name": "AHINOS",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 21.39999999999999857891452847979962825775146484375,
    "avg_distance_m": 77.400000000000005684341886080801486968994140625,
    "distance_consistency_m": 48.5,
    "duration_minutes": 193.400000000000005684341886080801486968994140625,
    "overlap_duration_s": 11607,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.270000000000000017763568394002504646778106689453125,
    "speed_b_std": 0.289999999999999980015985556747182272374629974365234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.270000000000000017763568394002504646778106689453125,
            "max_sog": 0.59999999999999997779553950749686919152736663818359375
        }
    },
    "time_window": {
        "start": "2026-06-02T08:28:20+00:00",
        "end": "2026-06-02T11:41:47+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
    },
    "zone_id": "discovered_138",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 92,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 21m, avg 77m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 193 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b148m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AHINOS and SEAGAS MAJOR) maintained close proximity (min 21m, avg 77m) for 193 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.71713580000000121117409435100853443145751953125,
            "lon": 35.99942920000000157187969307415187358856201171875
        },
        "time_window": {
            "start_ts": "2026-06-02T08:28:20+00:00",
            "end_ts": "2026-06-02T11:41:47+00:00"
        },
        "searched_at": "2026-06-02T12:00:11.480755+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 07:15 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 1h 2m
  • Data Points: 9 AIS positions
  • Period: 2026-06-02T07:15:32+00:00 to 2026-06-02T08:18:22+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 62.7999999999999971578290569595992565155029296875,
    "points_in_zone": 9,
    "first_point": {
        "ts": "2026-06-02T07:15:32+00:00",
        "lat": 34.71764830000000046084096538834273815155029296875,
        "lon": 33.35582500000000294448909698985517024993896484375
    },
    "last_point": {
        "ts": "2026-06-02T08:18:22+00:00",
        "lat": 34.76331669999999718356775701977312564849853515625,
        "lon": 33.35983499999999679630491300486028194427490234375
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 06:00 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 2h 17m
  • Data Points: 18 AIS positions
  • Period: 2026-06-02T06:00:42+00:00 to 2026-06-02T08:18:22+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 137.69999999999998863131622783839702606201171875,
    "points_in_zone": 18,
    "first_point": {
        "ts": "2026-06-02T06:00:42+00:00",
        "lat": 34.717721699999998463681549765169620513916015625,
        "lon": 33.35615169999999807259882800281047821044921875
    },
    "last_point": {
        "ts": "2026-06-02T08:18:22+00:00",
        "lat": 34.76331669999999718356775701977312564849853515625,
        "lon": 33.35983499999999679630491300486028194427490234375
    }
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 06:00 UTC 75.0%
  • Duration: 2h 16m
  • Radius: 409 meters
  • Data Points: 17 AIS positions
  • Centroid: 34.7179, 33.3562
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 408.6000000000000227373675443232059478759765625,
    "duration_minutes": 136.80000000000001136868377216160297393798828125,
    "points": 17,
    "centroid": {
        "lat": 34.71793550000000294630808639340102672576904296875,
        "lon": 33.3561649941176483480376191437244415283203125
    },
    "bbox": {
        "min_lat": 34.71649330000000333029674948193132877349853515625,
        "min_lon": 33.35370329999999938763721729628741741180419921875,
        "max_lat": 34.72100669999999666970325051806867122650146484375,
        "max_lon": 33.35770000000000123918653116561472415924072265625
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 05:00 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 3h 17m
  • Data Points: 23 AIS positions
  • Period: 2026-06-02T05:00:37+00:00 to 2026-06-02T08:18:22+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 197.80000000000001136868377216160297393798828125,
    "points_in_zone": 23,
    "first_point": {
        "ts": "2026-06-02T05:00:37+00:00",
        "lat": 34.71746170000000120126060210168361663818359375,
        "lon": 33.35602829999999840993041289038956165313720703125
    },
    "last_point": {
        "ts": "2026-06-02T08:18:22+00:00",
        "lat": 34.76331669999999718356775701977312564849853515625,
        "lon": 33.35983499999999679630491300486028194427490234375
    }
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 05:00 UTC 75.0%
  • Duration: 3h 16m
  • Radius: 414 meters
  • Data Points: 22 AIS positions
  • Centroid: 34.7179, 33.3562
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 414.3999999999999772626324556767940521240234375,
    "duration_minutes": 196.900000000000005684341886080801486968994140625,
    "points": 22,
    "centroid": {
        "lat": 34.717870995454546800829120911657810211181640625,
        "lon": 33.35616113181817610211510327644646167755126953125
    },
    "bbox": {
        "min_lat": 34.71649330000000333029674948193132877349853515625,
        "min_lon": 33.35370329999999938763721729628741741180419921875,
        "max_lat": 34.72100669999999666970325051806867122650146484375,
        "max_lon": 33.35770000000000123918653116561472415924072265625
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 04:06 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 4h 11m
  • Data Points: 30 AIS positions
  • Period: 2026-06-02T04:06:36+00:00 to 2026-06-02T08:18:22+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 251.80000000000001136868377216160297393798828125,
    "points_in_zone": 30,
    "first_point": {
        "ts": "2026-06-02T04:06:36+00:00",
        "lat": 34.71661999999999892452251515351235866546630859375,
        "lon": 33.356643300000001772787072695791721343994140625
    },
    "last_point": {
        "ts": "2026-06-02T08:18:22+00:00",
        "lat": 34.76331669999999718356775701977312564849853515625,
        "lon": 33.35983499999999679630491300486028194427490234375
    }
}
Methodology: 2026.01.18
Loiter Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 04:06 UTC 75.0%
  • Duration: 4h 10m
  • Radius: 445 meters
  • Data Points: 29 AIS positions
  • Centroid: 34.7176, 33.3562
  • Zone: Southern Black Sea Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 444.69999999999998863131622783839702606201171875,
    "duration_minutes": 250.900000000000005684341886080801486968994140625,
    "points": 29,
    "centroid": {
        "lat": 34.7175877689655152380510116927325725555419921875,
        "lon": 33.3562376999999941062924335710704326629638671875
    },
    "bbox": {
        "min_lat": 34.71649330000000333029674948193132877349853515625,
        "min_lon": 33.35370329999999938763721729628741741180419921875,
        "max_lat": 34.72100669999999666970325051806867122650146484375,
        "max_lon": 33.35770000000000123918653116561472415924072265625
    },
    "zone_id": "discovered_035"
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jun 2, 2026 03:04 UTC 80.0%
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 5h 13m
  • Data Points: 38 AIS positions
  • Period: 2026-06-02T03:04:29+00:00 to 2026-06-02T08:18:22+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 313.8999999999999772626324556767940521240234375,
    "points_in_zone": 38,
    "first_point": {
        "ts": "2026-06-02T03:04:29+00:00",
        "lat": 34.71667169999999913443389232270419597625732421875,
        "lon": 33.35638000000000147338141687214374542236328125
    },
    "last_point": {
        "ts": "2026-06-02T08:18:22+00:00",
        "lat": 34.76331669999999718356775701977312564849853515625,
        "lon": 33.35983499999999679630491300486028194427490234375
    }
}
Methodology: 2026.01.18

Recent Position Data

Time (UTC) Lat Lon Speed Course Zone
Jun 4 03:13 34.7170 33.3563 2.9 kn 45.1° Gulf of Oman Sanctioned Vessel Monitoring Zone
Jun 4 03:11 34.7171 33.3563 0.8 kn 47.7° Gulf of Oman Sanctioned Vessel Monitoring Zone
Jun 4 03:08 34.7169 33.3562 0.1 kn 355.0° Gulf of Oman Sanctioned Vessel Monitoring Zone
Jun 4 03:05 34.7170 33.3562 0.5 kn 355.3° Gulf of Oman Sanctioned Vessel Monitoring Zone
Jun 4 03:02 34.7170 33.3562 0.1 kn 8.7° Gulf of Oman Sanctioned Vessel Monitoring Zone
Jun 4 03:00 34.7165 33.3558 7.3 kn 221.6° Gulf of Oman Sanctioned Vessel Monitoring Zone
Jun 4 02:58 34.7169 33.3562 12.9 kn 225.1° Gulf of Oman Sanctioned Vessel Monitoring Zone
Jun 4 02:45 34.7169 33.3562 0.1 kn 30.2° Gulf of Oman Sanctioned Vessel Monitoring Zone
Jun 4 02:40 34.7169 33.3563 0.1 kn 16.1° Gulf of Oman Sanctioned Vessel Monitoring Zone
Jun 4 02:38 34.7169 33.3564 0.1 kn 16.9° Gulf of Oman Sanctioned Vessel Monitoring Zone
Jun 4 02:33 34.7168 33.3563 0.3 kn 183.0° Gulf of Oman Sanctioned Vessel Monitoring Zone
Jun 4 02:31 34.7168 33.3564 0.1 kn 66.2° Gulf of Oman Sanctioned Vessel Monitoring Zone
Jun 4 02:28 34.7167 33.3564 0.1 kn 79.2° Gulf of Oman Sanctioned Vessel Monitoring Zone
Jun 4 02:26 34.7167 33.3564 0.1 kn 67.4° Gulf of Oman Sanctioned Vessel Monitoring Zone
Jun 4 02:14 34.7167 33.3564 0.1 kn 122.9° Gulf of Oman Sanctioned Vessel Monitoring Zone
Jun 4 02:03 34.7169 33.3566 0.1 kn 3.2° Gulf of Oman Sanctioned Vessel Monitoring Zone
Jun 4 01:55 34.7167 33.3564 0.1 kn 156.8° Gulf of Oman Sanctioned Vessel Monitoring Zone
Jun 4 01:46 34.7168 33.3563 0.1 kn 124.1° Gulf of Oman Sanctioned Vessel Monitoring Zone
Jun 4 01:22 34.7168 33.3564 0.0 kn 341.7° Gulf of Oman Sanctioned Vessel Monitoring Zone
Jun 4 01:19 34.7168 33.3564 0.0 kn 341.7° Gulf of Oman Sanctioned Vessel Monitoring Zone

Showing 20 of 100 recent positions.

Data Source

Vessel observed through FleetLeaks' AIS monitoring system in zones of interest. Identity and position data derived from AIS broadcasts and public maritime databases.

Disclaimer: AIS data can be spoofed or falsified. Vessel identities should be independently verified before making compliance decisions.