SPECIALITY

IMO 9285184

Vessel information

Vessel Name SPECIALITY
IMO Number 9285184
MMSI 538012606
Vessel Type Tanker
Flag 🇲🇭 MARSHALL ISLANDS
Call Sign V7B309
Length 95 m
Beam 17 m

Detected Events (100)

Zone Dwell North Sea Monitoring Zone
Jul 24, 2026 19:03 UTC 80.0%
  • Zone: North Sea Monitoring Zone
  • Duration: 1h 14m
  • Data Points: 5 AIS positions
  • Period: 2026-07-24T19:03:15+00:00 to 2026-07-24T20:17:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_122",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 74.7000000000000028421709430404007434844970703125,
    "points_in_zone": 5,
    "first_point": {
        "ts": "2026-07-24T19:03:15+00:00",
        "lat": 37.66706169999999787023625685833394527435302734375,
        "lon": 24.15010170000000044865373638458549976348876953125
    },
    "last_point": {
        "ts": "2026-07-24T20:17:56+00:00",
        "lat": 37.61231670000000093523340183310210704803466796875,
        "lon": 24.01586830000000105655999504961073398590087890625
    }
}
Methodology: 2026.01.18
Zone Dwell North Sea Monitoring Zone
Jul 24, 2026 18:01 UTC 80.0%
  • Zone: North Sea Monitoring Zone
  • Duration: 2h 16m
  • Data Points: 21 AIS positions
  • Period: 2026-07-24T18:01:16+00:00 to 2026-07-24T20:17:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_122",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 136.69999999999998863131622783839702606201171875,
    "points_in_zone": 21,
    "first_point": {
        "ts": "2026-07-24T18:01:16+00:00",
        "lat": 37.7682317000000011830707080662250518798828125,
        "lon": 24.2270299999999991769072948954999446868896484375
    },
    "last_point": {
        "ts": "2026-07-24T20:17:56+00:00",
        "lat": 37.61231670000000093523340183310210704803466796875,
        "lon": 24.01586830000000105655999504961073398590087890625
    }
}
Methodology: 2026.01.18
Zone Dwell North Sea Monitoring Zone
Jul 24, 2026 17:04 UTC 80.0%
  • Zone: North Sea Monitoring Zone
  • Duration: 3h 13m
  • Data Points: 36 AIS positions
  • Period: 2026-07-24T17:04:14+00:00 to 2026-07-24T20:17:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_122",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 193.69999999999998863131622783839702606201171875,
    "points_in_zone": 36,
    "first_point": {
        "ts": "2026-07-24T17:04:14+00:00",
        "lat": 37.81674000000000290810930891893804073333740234375,
        "lon": 24.337881700000000506634023622609674930572509765625
    },
    "last_point": {
        "ts": "2026-07-24T20:17:56+00:00",
        "lat": 37.61231670000000093523340183310210704803466796875,
        "lon": 24.01586830000000105655999504961073398590087890625
    }
}
Methodology: 2026.01.18
Zone Dwell North Sea Monitoring Zone
Jul 24, 2026 16:25 UTC 80.0%
  • Zone: North Sea Monitoring Zone
  • Duration: 3h 52m
  • Data Points: 41 AIS positions
  • Period: 2026-07-24T16:25:14+00:00 to 2026-07-24T20:17:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_122",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 232.69999999999998863131622783839702606201171875,
    "points_in_zone": 41,
    "first_point": {
        "ts": "2026-07-24T16:25:14+00:00",
        "lat": 37.8520232999999990397554938681423664093017578125,
        "lon": 24.414546699999998935481926309876143932342529296875
    },
    "last_point": {
        "ts": "2026-07-24T20:17:56+00:00",
        "lat": 37.61231670000000093523340183310210704803466796875,
        "lon": 24.01586830000000105655999504961073398590087890625
    }
}
Methodology: 2026.01.18
Zone Dwell North Sea Monitoring Zone
Jul 24, 2026 15:02 UTC 80.0%
  • Zone: North Sea Monitoring Zone
  • Duration: 5h 15m
  • Data Points: 48 AIS positions
  • Period: 2026-07-24T15:02:26+00:00 to 2026-07-24T20:17:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_122",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 315.5,
    "points_in_zone": 48,
    "first_point": {
        "ts": "2026-07-24T15:02:26+00:00",
        "lat": 37.94147170000000102163539850153028964996337890625,
        "lon": 24.564498300000000341469785780645906925201416015625
    },
    "last_point": {
        "ts": "2026-07-24T20:17:56+00:00",
        "lat": 37.61231670000000093523340183310210704803466796875,
        "lon": 24.01586830000000105655999504961073398590087890625
    }
}
Methodology: 2026.01.18
Zone Dwell North Sea Monitoring Zone
Jul 24, 2026 14:46 UTC 80.0%
  • Zone: North Sea Monitoring Zone
  • Duration: 5h 31m
  • Data Points: 49 AIS positions
  • Period: 2026-07-24T14:46:26+00:00 to 2026-07-24T20:17:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_122",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 331.5,
    "points_in_zone": 49,
    "first_point": {
        "ts": "2026-07-24T14:46:26+00:00",
        "lat": 37.96871329999999744586602901108562946319580078125,
        "lon": 24.579158299999999570673026028089225292205810546875
    },
    "last_point": {
        "ts": "2026-07-24T20:17:56+00:00",
        "lat": 37.61231670000000093523340183310210704803466796875,
        "lon": 24.01586830000000105655999504961073398590087890625
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 23, 2026 02:01 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 1h 21m
  • Data Points: 51 AIS positions
  • Period: 2026-07-23T02:01:44+00:00 to 2026-07-23T03:22:53+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 81.2000000000000028421709430404007434844970703125,
    "points_in_zone": 51,
    "first_point": {
        "ts": "2026-07-23T02:01:44+00:00",
        "lat": 40.9353382999999979574567987583577632904052734375,
        "lon": 28.740351700000001500256985309533774852752685546875
    },
    "last_point": {
        "ts": "2026-07-23T03:22:53+00:00",
        "lat": 40.8830650000000019872459233738481998443603515625,
        "lon": 28.5087350000000014915713109076023101806640625
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 23, 2026 01:32 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 1h 50m
  • Data Points: 62 AIS positions
  • Period: 2026-07-23T01:32:43+00:00 to 2026-07-23T03:22:53+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 110.2000000000000028421709430404007434844970703125,
    "points_in_zone": 62,
    "first_point": {
        "ts": "2026-07-23T01:32:43+00:00",
        "lat": 40.96715830000000124755388242192566394805908203125,
        "lon": 28.77049170000000088975866674445569515228271484375
    },
    "last_point": {
        "ts": "2026-07-23T03:22:53+00:00",
        "lat": 40.8830650000000019872459233738481998443603515625,
        "lon": 28.5087350000000014915713109076023101806640625
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 23, 2026 00:24 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 2h 58m
  • Data Points: 63 AIS positions
  • Period: 2026-07-23T00:24:10+00:00 to 2026-07-23T03:22:53+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 178.69999999999998863131622783839702606201171875,
    "points_in_zone": 63,
    "first_point": {
        "ts": "2026-07-23T00:24:10+00:00",
        "lat": 40.96697329999999936944732326082885265350341796875,
        "lon": 28.770448300000001751186573528684675693511962890625
    },
    "last_point": {
        "ts": "2026-07-23T03:22:53+00:00",
        "lat": 40.8830650000000019872459233738481998443603515625,
        "lon": 28.5087350000000014915713109076023101806640625
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 22, 2026 23:29 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 3h 53m
  • Data Points: 65 AIS positions
  • Period: 2026-07-22T23:29:45+00:00 to 2026-07-23T03:22:53+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 233.099999999999994315658113919198513031005859375,
    "points_in_zone": 65,
    "first_point": {
        "ts": "2026-07-22T23:29:45+00:00",
        "lat": 40.9669549999999986766852089203894138336181640625,
        "lon": 28.77049170000000088975866674445569515228271484375
    },
    "last_point": {
        "ts": "2026-07-23T03:22:53+00:00",
        "lat": 40.8830650000000019872459233738481998443603515625,
        "lon": 28.5087350000000014915713109076023101806640625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 22, 2026 23:29 UTC 75.0%
  • Duration: 2h 19m
  • Radius: 1,030 meters
  • Data Points: 10 AIS positions
  • Centroid: 40.9641, 28.7676
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 1029.799999999999954525264911353588104248046875,
    "duration_minutes": 139.599999999999994315658113919198513031005859375,
    "points": 10,
    "centroid": {
        "lat": 40.9641361599999953568840282969176769256591796875,
        "lon": 28.767589499999996149881553719751536846160888671875
    },
    "bbox": {
        "min_lat": 40.95659330000000153404471348039805889129638671875,
        "min_lon": 28.7604749999999995679900166578590869903564453125,
        "max_lat": 40.96715830000000124755388242192566394805908203125,
        "max_lon": 28.77049170000000088975866674445569515228271484375
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 22, 2026 21:19 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 3m
  • Data Points: 66 AIS positions
  • Period: 2026-07-22T21:19:51+00:00 to 2026-07-23T03:22:53+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 363,
    "points_in_zone": 66,
    "first_point": {
        "ts": "2026-07-22T21:19:51+00:00",
        "lat": 40.9669650000000018508217181079089641571044921875,
        "lon": 28.77007499999999851070242584683001041412353515625
    },
    "last_point": {
        "ts": "2026-07-23T03:22:53+00:00",
        "lat": 40.8830650000000019872459233738481998443603515625,
        "lon": 28.5087350000000014915713109076023101806640625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 22, 2026 21:19 UTC 75.0%
  • Duration: 4h 29m
  • Radius: 1,064 meters
  • Data Points: 11 AIS positions
  • Centroid: 40.9644, 28.7678
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 1064.09999999999990905052982270717620849609375,
    "duration_minutes": 269.5,
    "points": 11,
    "centroid": {
        "lat": 40.96439332727272386591721442528069019317626953125,
        "lon": 28.767815454545452524826032458804547786712646484375
    },
    "bbox": {
        "min_lat": 40.95659330000000153404471348039805889129638671875,
        "min_lon": 28.7604749999999995679900166578590869903564453125,
        "max_lat": 40.96715830000000124755388242192566394805908203125,
        "max_lon": 28.77049170000000088975866674445569515228271484375
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 22, 2026 06:10 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 2h 25m
  • Data Points: 7 AIS positions
  • Period: 2026-07-22T06:10:18+00:00 to 2026-07-22T08:35:18+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 145,
    "points_in_zone": 7,
    "first_point": {
        "ts": "2026-07-22T06:10:18+00:00",
        "lat": 40.96833000000000168938640854321420192718505859375,
        "lon": 28.7699266999999991867298376746475696563720703125
    },
    "last_point": {
        "ts": "2026-07-22T08:35:18+00:00",
        "lat": 40.9684299999999979036147124134004116058349609375,
        "lon": 28.770233300000001008811523206532001495361328125
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 18, 2026 07:29 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 2h 10m
  • Data Points: 3 AIS positions
  • Period: 2026-07-18T07:29:17+00:00 to 2026-07-18T09:39:17+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 130,
    "points_in_zone": 3,
    "first_point": {
        "ts": "2026-07-18T07:29:17+00:00",
        "lat": 40.96842170000000038498910726048052310943603515625,
        "lon": 28.7700616999999994050085661001503467559814453125
    },
    "last_point": {
        "ts": "2026-07-18T09:39:17+00:00",
        "lat": 40.96841830000000328482201439328491687774658203125,
        "lon": 28.77015000000000100044417195022106170654296875
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 18, 2026 05:31 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 4h 7m
  • Data Points: 4 AIS positions
  • Period: 2026-07-18T05:31:27+00:00 to 2026-07-18T09:39:17+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 247.80000000000001136868377216160297393798828125,
    "points_in_zone": 4,
    "first_point": {
        "ts": "2026-07-18T05:31:27+00:00",
        "lat": 40.96809830000000118843672680668532848358154296875,
        "lon": 28.77010500000000092768459580838680267333984375
    },
    "last_point": {
        "ts": "2026-07-18T09:39:17+00:00",
        "lat": 40.96841830000000328482201439328491687774658203125,
        "lon": 28.77015000000000100044417195022106170654296875
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 16, 2026 06:01 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 1h 27m
  • Data Points: 7 AIS positions
  • Period: 2026-07-16T06:01:52+00:00 to 2026-07-16T07:29:32+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 87.7000000000000028421709430404007434844970703125,
    "points_in_zone": 7,
    "first_point": {
        "ts": "2026-07-16T06:01:52+00:00",
        "lat": 40.9683483000000023821485228836536407470703125,
        "lon": 28.770791700000000190584614756517112255096435546875
    },
    "last_point": {
        "ts": "2026-07-16T07:29:32+00:00",
        "lat": 40.9680350000000004229150363244116306304931640625,
        "lon": 28.770946699999999651709003956057131290435791015625
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 16, 2026 05:04 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 2h 25m
  • Data Points: 9 AIS positions
  • Period: 2026-07-16T05:04:29+00:00 to 2026-07-16T07:29:32+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 145.099999999999994315658113919198513031005859375,
    "points_in_zone": 9,
    "first_point": {
        "ts": "2026-07-16T05:04:29+00:00",
        "lat": 40.9681532999999973299054545350372791290283203125,
        "lon": 28.770908299999998547491486533544957637786865234375
    },
    "last_point": {
        "ts": "2026-07-16T07:29:32+00:00",
        "lat": 40.9680350000000004229150363244116306304931640625,
        "lon": 28.770946699999999651709003956057131290435791015625
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 13, 2026 08:04 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 1h 21m
  • Data Points: 6 AIS positions
  • Period: 2026-07-13T08:04:38+00:00 to 2026-07-13T09:26:14+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 81.599999999999994315658113919198513031005859375,
    "points_in_zone": 6,
    "first_point": {
        "ts": "2026-07-13T08:04:38+00:00",
        "lat": 40.969425000000001091393642127513885498046875,
        "lon": 28.77013000000000175759851117618381977081298828125
    },
    "last_point": {
        "ts": "2026-07-13T09:26:14+00:00",
        "lat": 40.96934830000000005156834959052503108978271484375,
        "lon": 28.77030500000000046156856114976108074188232421875
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 13, 2026 07:52 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 1h 33m
  • Data Points: 7 AIS positions
  • Period: 2026-07-13T07:52:31+00:00 to 2026-07-13T09:26:14+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 93.7000000000000028421709430404007434844970703125,
    "points_in_zone": 7,
    "first_point": {
        "ts": "2026-07-13T07:52:31+00:00",
        "lat": 40.96939330000000012432792573235929012298583984375,
        "lon": 28.770161699999999171950548770837485790252685546875
    },
    "last_point": {
        "ts": "2026-07-13T09:26:14+00:00",
        "lat": 40.96934830000000005156834959052503108978271484375,
        "lon": 28.77030500000000046156856114976108074188232421875
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 13, 2026 06:03 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 3h 22m
  • Data Points: 8 AIS positions
  • Period: 2026-07-13T06:03:46+00:00 to 2026-07-13T09:26:14+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 202.5,
    "points_in_zone": 8,
    "first_point": {
        "ts": "2026-07-13T06:03:46+00:00",
        "lat": 40.96918000000000148475010064430534839630126953125,
        "lon": 28.769696700000000788577381172217428684234619140625
    },
    "last_point": {
        "ts": "2026-07-13T09:26:14+00:00",
        "lat": 40.96934830000000005156834959052503108978271484375,
        "lon": 28.77030500000000046156856114976108074188232421875
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 13, 2026 01:16 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 4h 47m
  • Data Points: 2 AIS positions
  • Period: 2026-07-13T01:16:39+00:00 to 2026-07-13T06:03:46+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 287.1000000000000227373675443232059478759765625,
    "points_in_zone": 2,
    "first_point": {
        "ts": "2026-07-13T01:16:39+00:00",
        "lat": 40.9689632999999986395778250880539417266845703125,
        "lon": 28.770008300000000645013642497360706329345703125
    },
    "last_point": {
        "ts": "2026-07-13T06:03:46+00:00",
        "lat": 40.96918000000000148475010064430534839630126953125,
        "lon": 28.769696700000000788577381172217428684234619140625
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 12, 2026 06:08 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 1h 30m
  • Data Points: 3 AIS positions
  • Period: 2026-07-12T06:08:22+00:00 to 2026-07-12T07:39:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 90.7000000000000028421709430404007434844970703125,
    "points_in_zone": 3,
    "first_point": {
        "ts": "2026-07-12T06:08:22+00:00",
        "lat": 40.96309000000000111185727291740477085113525390625,
        "lon": 28.76873499999999950205165077932178974151611328125
    },
    "last_point": {
        "ts": "2026-07-12T07:39:02+00:00",
        "lat": 40.969279999999997698978404514491558074951171875,
        "lon": 28.7695082999999982575900503434240818023681640625
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 12, 2026 05:04 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 2h 34m
  • Data Points: 6 AIS positions
  • Period: 2026-07-12T05:04:56+00:00 to 2026-07-12T07:39:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 154.099999999999994315658113919198513031005859375,
    "points_in_zone": 6,
    "first_point": {
        "ts": "2026-07-12T05:04:56+00:00",
        "lat": 40.9630532999999985577233019284904003143310546875,
        "lon": 28.768718299999999743477019364945590496063232421875
    },
    "last_point": {
        "ts": "2026-07-12T07:39:02+00:00",
        "lat": 40.969279999999997698978404514491558074951171875,
        "lon": 28.7695082999999982575900503434240818023681640625
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 12, 2026 04:37 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 3h 1m
  • Data Points: 7 AIS positions
  • Period: 2026-07-12T04:37:42+00:00 to 2026-07-12T07:39:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 181.30000000000001136868377216160297393798828125,
    "points_in_zone": 7,
    "first_point": {
        "ts": "2026-07-12T04:37:42+00:00",
        "lat": 40.96312499999999801048033987171947956085205078125,
        "lon": 28.769013300000001009948391583748161792755126953125
    },
    "last_point": {
        "ts": "2026-07-12T07:39:02+00:00",
        "lat": 40.969279999999997698978404514491558074951171875,
        "lon": 28.7695082999999982575900503434240818023681640625
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Jul 12, 2026 03:23 UTC 55/100
Vessel A: Gogland (GOGLAND) Cameroon
Vessel B: IMO 9285184 (SPECIALITY) MARSHALL ISLANDS
  • Minimum Distance: 436 meters
  • Average Distance: 438 meters
  • Duration: 36 minutes
  • Period: 2026-07-12T03:23:27+00:00 to 2026-07-12T03:59:26+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 55/100

Low-confidence STS candidate - may warrant review. Two tankers (GOGLAND and SPECIALITY) maintained close proximity (min 436m, avg 438m) for 36 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 436m, avg 438m
Duration5/25Duration 36 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-12T09:30:11.404522+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 613511200,
        "imo": 9430210,
        "name": "GOGLAND",
        "flag": "Cameroon"
    },
    "vessel_b": {
        "mmsi": 538012606,
        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 435.6000000000000227373675443232059478759765625,
    "avg_distance_m": 438.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 2.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 36,
    "overlap_duration_s": 2159,
    "speed_a_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-12T03:23:27+00:00",
        "end": "2026-07-12T03:59:26+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 55,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 436m, avg 438m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 36 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: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Low-confidence STS candidate - may warrant review. Two tankers (GOGLAND and SPECIALITY) maintained close proximity (min 436m, avg 438m) for 36 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.96251300000000128420651890337467193603515625,
            "lon": 28.766471100000000404861566494219005107879638671875
        },
        "time_window": {
            "start_ts": "2026-07-12T03:23:27+00:00",
            "end_ts": "2026-07-12T03:59:26+00:00"
        },
        "searched_at": "2026-07-12T09:30:11.404522+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 12, 2026 03:07 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 4h 31m
  • Data Points: 14 AIS positions
  • Period: 2026-07-12T03:07:05+00:00 to 2026-07-12T07:39:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 271.8999999999999772626324556767940521240234375,
    "points_in_zone": 14,
    "first_point": {
        "ts": "2026-07-12T03:07:05+00:00",
        "lat": 40.96300000000000096633812063373625278472900390625,
        "lon": 28.769020000000001147100192611105740070343017578125
    },
    "last_point": {
        "ts": "2026-07-12T07:39:02+00:00",
        "lat": 40.969279999999997698978404514491558074951171875,
        "lon": 28.7695082999999982575900503434240818023681640625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 12, 2026 03:07 UTC 75.0%
  • Duration: 4h 31m
  • Radius: 644 meters
  • Data Points: 14 AIS positions
  • Centroid: 40.9635, 28.7689
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 643.8999999999999772626324556767940521240234375,
    "duration_minutes": 271.8999999999999772626324556767940521240234375,
    "points": 14,
    "centroid": {
        "lat": 40.9634992857142918865065439604222774505615234375,
        "lon": 28.7689166642857117039966396987438201904296875
    },
    "bbox": {
        "min_lat": 40.9629400000000032378011383116245269775390625,
        "min_lon": 28.768616699999999042347553768195211887359619140625,
        "max_lat": 40.969279999999997698978404514491558074951171875,
        "max_lon": 28.7695082999999982575900503434240818023681640625
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Jul 12, 2026 02:47 UTC 65/100
Vessel A: Gogland (GOGLAND) Cameroon
Vessel B: IMO 9285184 (SPECIALITY) MARSHALL ISLANDS
  • Minimum Distance: 436 meters
  • Average Distance: 438 meters
  • Duration: 1h 12m
  • Period: 2026-07-12T02:47:28+00:00 to 2026-07-12T03:59:26+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (GOGLAND and SPECIALITY) maintained close proximity (min 436m, avg 438m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 436m, avg 438m
Duration15/25Duration 72 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-12T09:15:01.829555+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 613511200,
        "imo": 9430210,
        "name": "GOGLAND",
        "flag": "Cameroon"
    },
    "vessel_b": {
        "mmsi": 538012606,
        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 435.6000000000000227373675443232059478759765625,
    "avg_distance_m": 437.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 72,
    "overlap_duration_s": 4318,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-12T02:47:28+00:00",
        "end": "2026-07-12T03:59:26+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 436m, avg 438m"
            },
            "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 \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (GOGLAND and SPECIALITY) maintained close proximity (min 436m, avg 438m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.9625089000000031091985874809324741363525390625,
            "lon": 28.766482700000000960471879807300865650177001953125
        },
        "time_window": {
            "start_ts": "2026-07-12T02:47:28+00:00",
            "end_ts": "2026-07-12T03:59:26+00:00"
        },
        "searched_at": "2026-07-12T09:15:01.829555+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 12, 2026 02:00 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 5h 38m
  • Data Points: 24 AIS positions
  • Period: 2026-07-12T02:00:34+00:00 to 2026-07-12T07:39:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 338.5,
    "points_in_zone": 24,
    "first_point": {
        "ts": "2026-07-12T02:00:34+00:00",
        "lat": 40.96300670000000110348992166109383106231689453125,
        "lon": 28.768944999999998657358446507714688777923583984375
    },
    "last_point": {
        "ts": "2026-07-12T07:39:02+00:00",
        "lat": 40.969279999999997698978404514491558074951171875,
        "lon": 28.7695082999999982575900503434240818023681640625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 12, 2026 02:00 UTC 75.0%
  • Duration: 5h 38m
  • Radius: 667 meters
  • Data Points: 24 AIS positions
  • Centroid: 40.9633, 28.7689
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 666.700000000000045474735088646411895751953125,
    "duration_minutes": 338.5,
    "points": 24,
    "centroid": {
        "lat": 40.96329173333332818174312706105411052703857421875,
        "lon": 28.768947500000006556319931405596435070037841796875
    },
    "bbox": {
        "min_lat": 40.9629400000000032378011383116245269775390625,
        "min_lon": 28.768616699999999042347553768195211887359619140625,
        "max_lat": 40.969279999999997698978404514491558074951171875,
        "max_lon": 28.7695082999999982575900503434240818023681640625
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 12, 2026 01:42 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 5h 56m
  • Data Points: 27 AIS positions
  • Period: 2026-07-12T01:42:29+00:00 to 2026-07-12T07:39:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 356.6000000000000227373675443232059478759765625,
    "points_in_zone": 27,
    "first_point": {
        "ts": "2026-07-12T01:42:29+00:00",
        "lat": 40.9630633000000017318598111160099506378173828125,
        "lon": 28.7689783000000005586116458289325237274169921875
    },
    "last_point": {
        "ts": "2026-07-12T07:39:02+00:00",
        "lat": 40.969279999999997698978404514491558074951171875,
        "lon": 28.7695082999999982575900503434240818023681640625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 12, 2026 01:42 UTC 75.0%
  • Duration: 5h 56m
  • Radius: 670 meters
  • Data Points: 27 AIS positions
  • Centroid: 40.9633, 28.7689
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 669.8999999999999772626324556767940521240234375,
    "duration_minutes": 356.6000000000000227373675443232059478759765625,
    "points": 27,
    "centroid": {
        "lat": 40.96326252962962399806201574392616748809814453125,
        "lon": 28.768947159259258938845960074104368686676025390625
    },
    "bbox": {
        "min_lat": 40.9629400000000032378011383116245269775390625,
        "min_lon": 28.768616699999999042347553768195211887359619140625,
        "max_lat": 40.969279999999997698978404514491558074951171875,
        "max_lon": 28.7695082999999982575900503434240818023681640625
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts Bosphorus/Dardanelles Approach
Jul 12, 2026 01:41 UTC 75/100
Vessel A: Gogland (GOGLAND) Cameroon
Vessel B: IMO 9285184 (SPECIALITY) MARSHALL ISLANDS
  • Minimum Distance: 429 meters
  • Average Distance: 438 meters
  • Duration: 2h 18m
  • Period: 2026-07-12T01:41:28+00:00 to 2026-07-12T03:59:26+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (GOGLAND and SPECIALITY) maintained close proximity (min 429m, avg 438m) for 138 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 429m, avg 438m
Duration25/25Duration 138 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±6m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 613511200,
        "imo": 9430210,
        "name": "GOGLAND",
        "flag": "Cameroon"
    },
    "vessel_b": {
        "mmsi": 538012606,
        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 428.8999999999999772626324556767940521240234375,
    "avg_distance_m": 438.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 5.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 138,
    "overlap_duration_s": 8278,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-12T01:41:28+00:00",
        "end": "2026-07-12T03:59:26+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 429m, avg 438m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 138 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: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (GOGLAND and SPECIALITY) maintained close proximity (min 429m, avg 438m) for 138 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Bosphorus/Dardanelles Approach
Jul 12, 2026 00:45 UTC 65/100
Vessel A: IMO 9285184 (SPECIALITY) MARSHALL ISLANDS
Vessel B: Gogland (GOGLAND) Cameroon
  • Minimum Distance: 419 meters
  • Average Distance: 435 meters
  • Duration: 1h 6m
  • Period: 2026-07-12T00:45:03+00:00 to 2026-07-12T01:51:33+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (SPECIALITY and GOGLAND) maintained close proximity (min 419m, avg 435m) for 66 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 419m, avg 435m
Duration15/25Duration 66 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±14m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538012606,
        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 613511200,
        "imo": 9430210,
        "name": "GOGLAND",
        "flag": "Cameroon"
    },
    "min_distance_m": 419.19999999999998863131622783839702606201171875,
    "avg_distance_m": 434.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 13.5,
    "duration_minutes": 66.5,
    "overlap_duration_s": 3990,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-12T00:45:03+00:00",
        "end": "2026-07-12T01:51:33+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 419m, avg 435m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 66 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b114m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SPECIALITY and GOGLAND) maintained close proximity (min 419m, avg 435m) for 66 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 12, 2026 00:45 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 5h 32m
  • Data Points: 28 AIS positions
  • Period: 2026-07-12T00:45:03+00:00 to 2026-07-12T06:17:27+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 332.3999999999999772626324556767940521240234375,
    "points_in_zone": 28,
    "first_point": {
        "ts": "2026-07-12T00:45:03+00:00",
        "lat": 40.96296829999999999927240423858165740966796875,
        "lon": 28.768826700000001750368028297089040279388427734375
    },
    "last_point": {
        "ts": "2026-07-12T06:17:27+00:00",
        "lat": 40.9631116999999989047864801250398159027099609375,
        "lon": 28.768626699999998663770384155213832855224609375
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 12, 2026 00:45 UTC 75.0%
  • Duration: 5h 32m
  • Radius: 28 meters
  • Data Points: 28 AIS positions
  • Centroid: 40.9630, 28.7689
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 28,
    "duration_minutes": 332.3999999999999772626324556767940521240234375,
    "points": 28,
    "centroid": {
        "lat": 40.96302946071427442120693740434944629669189453125,
        "lon": 28.768918392857148802477240678854286670684814453125
    },
    "bbox": {
        "min_lat": 40.9629400000000032378011383116245269775390625,
        "min_lon": 28.768616699999999042347553768195211887359619140625,
        "max_lat": 40.96313500000000118461684905923902988433837890625,
        "max_lon": 28.7690300000000007685230229981243610382080078125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 11, 2026 23:11 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 29m
  • Data Points: 30 AIS positions
  • Period: 2026-07-11T23:47:39+00:00 to 2026-07-12T06:17:27+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 389.80000000000001136868377216160297393798828125,
    "points_in_zone": 30,
    "first_point": {
        "ts": "2026-07-11T23:47:39+00:00",
        "lat": 40.96303999999999945202944218181073665618896484375,
        "lon": 28.7688950000000005502442945726215839385986328125
    },
    "last_point": {
        "ts": "2026-07-12T06:17:27+00:00",
        "lat": 40.9631116999999989047864801250398159027099609375,
        "lon": 28.768626699999998663770384155213832855224609375
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 11, 2026 23:11 UTC 75.0%
  • Duration: 6h 29m
  • Radius: 28 meters
  • Data Points: 30 AIS positions
  • Centroid: 40.9630, 28.7689
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 27.89999999999999857891452847979962825775146484375,
    "duration_minutes": 389.80000000000001136868377216160297393798828125,
    "points": 30,
    "centroid": {
        "lat": 40.9630288299999989476418704725801944732666015625,
        "lon": 28.768917276666673643603644450195133686065673828125
    },
    "bbox": {
        "min_lat": 40.9629400000000032378011383116245269775390625,
        "min_lon": 28.768616699999999042347553768195211887359619140625,
        "max_lat": 40.96313500000000118461684905923902988433837890625,
        "max_lon": 28.7690300000000007685230229981243610382080078125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 11, 2026 12:00 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 2h 19m
  • Data Points: 2 AIS positions
  • Period: 2026-07-11T12:00:32+00:00 to 2026-07-11T14:19:30+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 139,
    "points_in_zone": 2,
    "first_point": {
        "ts": "2026-07-11T12:00:32+00:00",
        "lat": 40.9632567000000022972017177380621433258056640625,
        "lon": 28.76892000000000138015820994041860103607177734375
    },
    "last_point": {
        "ts": "2026-07-11T14:19:30+00:00",
        "lat": 40.96314170000000132176865008659660816192626953125,
        "lon": 28.768589999999999662350091966800391674041748046875
    }
}
Methodology: 2026.01.18
Sts Bosphorus/Dardanelles Approach
Jul 8, 2026 11:23 UTC 65/100
Vessel A: IMO 9285184 (SPECIALITY) MARSHALL ISLANDS
Vessel B: IMO 9388730 (SAVIR TIGER) INDONESIA
  • Minimum Distance: 234 meters
  • Average Distance: 248 meters
  • Duration: 36 minutes
  • Period: 2026-07-08T11:23:06+00:00 to 2026-07-08T11:59:20+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (SPECIALITY and SAVIR TIGER) maintained close proximity (min 234m, avg 248m) for 36 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 234m, avg 248m
Duration5/25Duration 36 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±13m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538012606,
        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 525121076,
        "imo": 9388730,
        "name": "SAVIR TIGER",
        "flag": "INDONESIA"
    },
    "min_distance_m": 233.599999999999994315658113919198513031005859375,
    "avg_distance_m": 248,
    "distance_consistency_m": 13.300000000000000710542735760100185871124267578125,
    "duration_minutes": 36.2000000000000028421709430404007434844970703125,
    "overlap_duration_s": 2174,
    "speed_a_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-08T11:23:06+00:00",
        "end": "2026-07-08T11:59:20+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 234m, avg 248m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 36 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b113m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SPECIALITY and SAVIR TIGER) maintained close proximity (min 234m, avg 248m) for 36 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 8, 2026 11:01 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 5h 44m
  • Data Points: 6 AIS positions
  • Period: 2026-07-08T11:01:56+00:00 to 2026-07-08T16:46:26+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 344.5,
    "points_in_zone": 6,
    "first_point": {
        "ts": "2026-07-08T11:01:56+00:00",
        "lat": 40.96360829999999708661562181077897548675537109375,
        "lon": 28.76846499999999906549419392831623554229736328125
    },
    "last_point": {
        "ts": "2026-07-08T16:46:26+00:00",
        "lat": 40.9634233000000023139364202506840229034423828125,
        "lon": 28.768576700000000556656232220120728015899658203125
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 8, 2026 10:01 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 29m
  • Data Points: 10 AIS positions
  • Period: 2026-07-08T10:16:38+00:00 to 2026-07-08T16:46:26+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 389.80000000000001136868377216160297393798828125,
    "points_in_zone": 10,
    "first_point": {
        "ts": "2026-07-08T10:16:38+00:00",
        "lat": 40.963588299999997843769961036741733551025390625,
        "lon": 28.768468299999998549765223287977278232574462890625
    },
    "last_point": {
        "ts": "2026-07-08T16:46:26+00:00",
        "lat": 40.9634233000000023139364202506840229034423828125,
        "lon": 28.768576700000000556656232220120728015899658203125
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 8, 2026 10:01 UTC 75.0%
  • Duration: 6h 29m
  • Radius: 12 meters
  • Data Points: 10 AIS positions
  • Centroid: 40.9635, 28.7685
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 12.300000000000000710542735760100185871124267578125,
    "duration_minutes": 389.80000000000001136868377216160297393798828125,
    "points": 10,
    "centroid": {
        "lat": 40.96352981999999798290446051396429538726806640625,
        "lon": 28.76853598999999661600668332539498805999755859375
    },
    "bbox": {
        "min_lat": 40.9634233000000023139364202506840229034423828125,
        "min_lon": 28.768408300000000821228240965865552425384521484375,
        "max_lat": 40.96360829999999708661562181077897548675537109375,
        "max_lon": 28.768648299999998840803527855314314365386962890625
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts Bosphorus/Dardanelles Approach
Jul 8, 2026 09:26 UTC 82/100
Vessel A: IMO 9388730 (SAVIR TIGER) INDONESIA
Vessel B: IMO 9285184 (SPECIALITY) MARSHALL ISLANDS
  • Minimum Distance: 240 meters
  • Average Distance: 282 meters
  • Duration: 2h 15m
  • Period: 2026-07-08T09:41:38+00:00 to 2026-07-08T11:56:42+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 82/100

High-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 240m, avg 282m) for 135 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 240m, avg 282m
Duration25/25Duration 135 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency12/15Distance variance ±31m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 525121076,
        "imo": 9388730,
        "name": "SAVIR TIGER",
        "flag": "INDONESIA"
    },
    "vessel_b": {
        "mmsi": 538012606,
        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 240,
    "avg_distance_m": 281.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 30.89999999999999857891452847979962825775146484375,
    "duration_minutes": 135.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 8104,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-08T09:41:38+00:00",
        "end": "2026-07-08T11:56:42+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 82,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 240m, avg 282m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 135 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b131m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 240m, avg 282m) for 135 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 8, 2026 09:22 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 2h 37m
  • Data Points: 15 AIS positions
  • Period: 2026-07-08T09:22:13+00:00 to 2026-07-08T11:59:20+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 157.099999999999994315658113919198513031005859375,
    "points_in_zone": 15,
    "first_point": {
        "ts": "2026-07-08T09:22:13+00:00",
        "lat": 40.96352329999999852816472412087023258209228515625,
        "lon": 28.768523299999998243947629816830158233642578125
    },
    "last_point": {
        "ts": "2026-07-08T11:59:20+00:00",
        "lat": 40.96356329999999701385604566894471645355224609375,
        "lon": 28.768634999999999735109668108634650707244873046875
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 8, 2026 09:22 UTC 75.0%
  • Duration: 2h 37m
  • Radius: 13 meters
  • Data Points: 15 AIS positions
  • Centroid: 40.9635, 28.7685
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 12.5,
    "duration_minutes": 157.099999999999994315658113919198513031005859375,
    "points": 15,
    "centroid": {
        "lat": 40.9635469933333382641649222932755947113037109375,
        "lon": 28.768509439999998988923834986053407192230224609375
    },
    "bbox": {
        "min_lat": 40.9634750000000025238477974198758602142333984375,
        "min_lon": 28.768408300000000821228240965865552425384521484375,
        "max_lat": 40.96362500000000039790393202565610408782958984375,
        "max_lon": 28.768648299999998840803527855314314365386962890625
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 7, 2026 21:44 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 4h 44m
  • Data Points: 2 AIS positions
  • Period: 2026-07-07T21:44:10+00:00 to 2026-07-08T02:28:16+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 284.1000000000000227373675443232059478759765625,
    "points_in_zone": 2,
    "first_point": {
        "ts": "2026-07-07T21:44:10+00:00",
        "lat": 40.96339669999999699712134315632283687591552734375,
        "lon": 28.768256699999998460270944633521139621734619140625
    },
    "last_point": {
        "ts": "2026-07-08T02:28:16+00:00",
        "lat": 40.9635583000000025322151486761868000030517578125,
        "lon": 28.768498300000000966747393249534070491790771484375
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 7, 2026 18:03 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 3h 40m
  • Data Points: 3 AIS positions
  • Period: 2026-07-07T18:03:33+00:00 to 2026-07-07T21:44:10+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 220.599999999999994315658113919198513031005859375,
    "points_in_zone": 3,
    "first_point": {
        "ts": "2026-07-07T18:03:33+00:00",
        "lat": 40.96338999999999685996954212896525859832763671875,
        "lon": 28.768190000000000594582161284051835536956787109375
    },
    "last_point": {
        "ts": "2026-07-07T21:44:10+00:00",
        "lat": 40.96339669999999699712134315632283687591552734375,
        "lon": 28.768256699999998460270944633521139621734619140625
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Jul 7, 2026 17:42 UTC 77/100
Vessel A: IMO 9285184 (SPECIALITY) MARSHALL ISLANDS
Vessel B: IMO 9388730 (SAVIR TIGER) INDONESIA
  • Minimum Distance: 366 meters
  • Average Distance: 439 meters
  • Duration: 4h 1m
  • Period: 2026-07-07T17:42:27+00:00 to 2026-07-07T21:44:10+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 77/100

Moderate-confidence STS candidate. Two tankers (SPECIALITY and SAVIR TIGER) maintained close proximity (min 366m, avg 438m) for 242 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 366m, avg 438m
Duration25/25Duration 242 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency12/15Distance variance ±42m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-07T22:45:02.090787+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538012606,
        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 525121076,
        "imo": 9388730,
        "name": "SAVIR TIGER",
        "flag": "INDONESIA"
    },
    "min_distance_m": 365.80000000000001136868377216160297393798828125,
    "avg_distance_m": 438.5,
    "distance_consistency_m": 42,
    "duration_minutes": 241.69999999999998863131622783839702606201171875,
    "overlap_duration_s": 14503,
    "speed_a_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-07T17:42:27+00:00",
        "end": "2026-07-07T21:44:10+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 77,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 366m, avg 438m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 242 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b142m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SPECIALITY and SAVIR TIGER) maintained close proximity (min 366m, avg 438m) for 242 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.96150579999999763458617962896823883056640625,
            "lon": 28.767410399999999270903572323732078075408935546875
        },
        "time_window": {
            "start_ts": "2026-07-07T17:42:27+00:00",
            "end_ts": "2026-07-07T21:44:10+00:00"
        },
        "searched_at": "2026-07-07T22:45:02.090787+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 7, 2026 17:03 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 4h 41m
  • Data Points: 11 AIS positions
  • Period: 2026-07-07T17:03:10+00:00 to 2026-07-07T21:44:10+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 281,
    "points_in_zone": 11,
    "first_point": {
        "ts": "2026-07-07T17:03:10+00:00",
        "lat": 40.963421699999997827035258524119853973388671875,
        "lon": 28.768171699999999901820046943612396717071533203125
    },
    "last_point": {
        "ts": "2026-07-07T21:44:10+00:00",
        "lat": 40.96339669999999699712134315632283687591552734375,
        "lon": 28.768256699999998460270944633521139621734619140625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 7, 2026 17:03 UTC 75.0%
  • Duration: 4h 41m
  • Radius: 10 meters
  • Data Points: 11 AIS positions
  • Centroid: 40.9634, 28.7682
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 9.5,
    "duration_minutes": 281,
    "points": 11,
    "centroid": {
        "lat": 40.96340015454544669637471088208258152008056640625,
        "lon": 28.768199554545450524756233789958059787750244140625
    },
    "bbox": {
        "min_lat": 40.96334329999999823712641955353319644927978515625,
        "min_lon": 28.7681366999999994504833011887967586517333984375,
        "max_lat": 40.96348330000000004247340257279574871063232421875,
        "max_lon": 28.768256699999998460270944633521139621734619140625
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts Bosphorus/Dardanelles Approach
Jul 7, 2026 16:42 UTC 70/100
Vessel A: IMO 9388730 (SAVIR TIGER) INDONESIA
Vessel B: IMO 9285184 (SPECIALITY) MARSHALL ISLANDS
  • Minimum Distance: 431 meters
  • Average Distance: 449 meters
  • Duration: 1h 45m
  • Period: 2026-07-07T16:23:39+00:00 to 2026-07-07T18:08:39+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 431m, avg 449m) for 105 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 431m, avg 449m
Duration20/25Duration 105 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±13m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 525121076,
        "imo": 9388730,
        "name": "SAVIR TIGER",
        "flag": "INDONESIA"
    },
    "vessel_b": {
        "mmsi": 538012606,
        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 431.30000000000001136868377216160297393798828125,
    "avg_distance_m": 448.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 13.300000000000000710542735760100185871124267578125,
    "duration_minutes": 105,
    "overlap_duration_s": 6300,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-07T16:23:39+00:00",
        "end": "2026-07-07T18:08:39+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 431m, avg 449m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 105 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b113m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 431m, avg 449m) for 105 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 7, 2026 16:02 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 5h 41m
  • Data Points: 19 AIS positions
  • Period: 2026-07-07T16:02:44+00:00 to 2026-07-07T21:44:10+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 341.3999999999999772626324556767940521240234375,
    "points_in_zone": 19,
    "first_point": {
        "ts": "2026-07-07T16:02:44+00:00",
        "lat": 40.96330830000000133850335259921848773956298828125,
        "lon": 28.768253300000001360103851766325533390045166015625
    },
    "last_point": {
        "ts": "2026-07-07T21:44:10+00:00",
        "lat": 40.96339669999999699712134315632283687591552734375,
        "lon": 28.768256699999998460270944633521139621734619140625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 7, 2026 16:02 UTC 75.0%
  • Duration: 5h 41m
  • Radius: 15 meters
  • Data Points: 19 AIS positions
  • Centroid: 40.9634, 28.7682
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 14.9000000000000003552713678800500929355621337890625,
    "duration_minutes": 341.3999999999999772626324556767940521240234375,
    "points": 19,
    "centroid": {
        "lat": 40.96339955789473918912335648201406002044677734375,
        "lon": 28.76821965263157920844605541788041591644287109375
    },
    "bbox": {
        "min_lat": 40.96330830000000133850335259921848773956298828125,
        "min_lon": 28.7681366999999994504833011887967586517333984375,
        "max_lat": 40.96353330000000170230123330838978290557861328125,
        "max_lon": 28.768315000000001191438059322535991668701171875
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts Bosphorus/Dardanelles Approach
Jul 7, 2026 15:44 UTC 75/100
Vessel A: IMO 9388730 (SAVIR TIGER) INDONESIA
Vessel B: IMO 9285184 (SPECIALITY) MARSHALL ISLANDS
  • Minimum Distance: 431 meters
  • Average Distance: 453 meters
  • Duration: 2h 9m
  • Period: 2026-07-07T15:59:37+00:00 to 2026-07-07T18:08:39+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 431m, avg 452m) for 129 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 431m, avg 452m
Duration25/25Duration 129 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±12m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 525121076,
        "imo": 9388730,
        "name": "SAVIR TIGER",
        "flag": "INDONESIA"
    },
    "vessel_b": {
        "mmsi": 538012606,
        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 431.30000000000001136868377216160297393798828125,
    "avg_distance_m": 452.5,
    "distance_consistency_m": 12.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 129,
    "overlap_duration_s": 7742,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-07T15:59:37+00:00",
        "end": "2026-07-07T18:08:39+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 431m, avg 452m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 129 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b112m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 431m, avg 452m) for 129 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 7, 2026 15:17 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 26m
  • Data Points: 25 AIS positions
  • Period: 2026-07-07T15:17:24+00:00 to 2026-07-07T21:44:10+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 386.80000000000001136868377216160297393798828125,
    "points_in_zone": 25,
    "first_point": {
        "ts": "2026-07-07T15:17:24+00:00",
        "lat": 40.96320829999999801884769112803041934967041015625,
        "lon": 28.768280000000000740101313567720353603363037109375
    },
    "last_point": {
        "ts": "2026-07-07T21:44:10+00:00",
        "lat": 40.96339669999999699712134315632283687591552734375,
        "lon": 28.768256699999998460270944633521139621734619140625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 7, 2026 15:17 UTC 75.0%
  • Duration: 6h 26m
  • Radius: 19 meters
  • Data Points: 25 AIS positions
  • Centroid: 40.9634, 28.7682
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 18.89999999999999857891452847979962825775146484375,
    "duration_minutes": 386.80000000000001136868377216160297393798828125,
    "points": 25,
    "centroid": {
        "lat": 40.96337392800000287707007373683154582977294921875,
        "lon": 28.768227932000005608870196738280355930328369140625
    },
    "bbox": {
        "min_lat": 40.96320829999999801884769112803041934967041015625,
        "min_lon": 28.7681366999999994504833011887967586517333984375,
        "max_lat": 40.96353330000000170230123330838978290557861328125,
        "max_lon": 28.768315000000001191438059322535991668701171875
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 7, 2026 14:13 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 3h 52m
  • Data Points: 29 AIS positions
  • Period: 2026-07-07T14:13:58+00:00 to 2026-07-07T18:06:35+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 232.599999999999994315658113919198513031005859375,
    "points_in_zone": 29,
    "first_point": {
        "ts": "2026-07-07T14:13:58+00:00",
        "lat": 40.9632567000000022972017177380621433258056640625,
        "lon": 28.768180000000000973159330897033214569091796875
    },
    "last_point": {
        "ts": "2026-07-07T18:06:35+00:00",
        "lat": 40.9633783000000022411768441088497638702392578125,
        "lon": 28.768216699999999974579623085446655750274658203125
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 7, 2026 14:13 UTC 75.0%
  • Duration: 3h 52m
  • Radius: 25 meters
  • Data Points: 29 AIS positions
  • Centroid: 40.9633, 28.7682
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 24.89999999999999857891452847979962825775146484375,
    "duration_minutes": 232.599999999999994315658113919198513031005859375,
    "points": 29,
    "centroid": {
        "lat": 40.96334671724137166393120423890650272369384765625,
        "lon": 28.768233268965527571481288759969174861907958984375
    },
    "bbox": {
        "min_lat": 40.96312830000000104746504803188145160675048828125,
        "min_lon": 28.7681366999999994504833011887967586517333984375,
        "max_lat": 40.96353330000000170230123330838978290557861328125,
        "max_lon": 28.768338299999999918554749456234276294708251953125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts Bosphorus/Dardanelles Approach
Jul 7, 2026 14:01 UTC 65/100
Vessel A: IMO 9285184 (SPECIALITY) MARSHALL ISLANDS
Vessel B: MMSI 630001252 (ADIL IBRAHIMLI) GUINEA BISSAU
  • Minimum Distance: 470 meters
  • Average Distance: 484 meters
  • Duration: 1h 3m
  • Period: 2026-07-07T14:13:58+00:00 to 2026-07-07T15:17:24+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (SPECIALITY and ADIL IBRAHIMLI) maintained close proximity (min 470m, avg 484m) for 63 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 470m, avg 484m
Duration15/25Duration 63 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±12m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538012606,
        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 630001252,
        "name": "ADIL IBRAHIMLI",
        "flag": "GUINEA BISSAU"
    },
    "min_distance_m": 470.3999999999999772626324556767940521240234375,
    "avg_distance_m": 483.5,
    "distance_consistency_m": 12,
    "duration_minutes": 63.39999999999999857891452847979962825775146484375,
    "overlap_duration_s": 3806,
    "speed_a_avg": 0.179999999999999993338661852249060757458209991455078125,
    "speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.179999999999999993338661852249060757458209991455078125,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        }
    },
    "time_window": {
        "start": "2026-07-07T14:13:58+00:00",
        "end": "2026-07-07T15:17:24+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 470m, avg 484m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 63 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b112m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SPECIALITY and ADIL IBRAHIMLI) maintained close proximity (min 470m, avg 484m) for 63 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Bosphorus/Dardanelles Approach
Jul 7, 2026 13:52 UTC 65/100
Vessel A: IMO 9285184 (SPECIALITY) MARSHALL ISLANDS
Vessel B: MMSI 630001252 (ADIL IBRAHIMLI) GUINEA BISSAU
  • Minimum Distance: 470 meters
  • Average Distance: 484 meters
  • Duration: 1h 24m
  • Period: 2026-07-07T13:52:48+00:00 to 2026-07-07T15:17:24+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (SPECIALITY and ADIL IBRAHIMLI) maintained close proximity (min 470m, avg 484m) for 85 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 470m, avg 484m
Duration15/25Duration 85 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±11m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538012606,
        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 630001252,
        "name": "ADIL IBRAHIMLI",
        "flag": "GUINEA BISSAU"
    },
    "min_distance_m": 470.3999999999999772626324556767940521240234375,
    "avg_distance_m": 484.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 11.0999999999999996447286321199499070644378662109375,
    "duration_minutes": 84.599999999999994315658113919198513031005859375,
    "overlap_duration_s": 5076,
    "speed_a_avg": 0.2099999999999999922284388276239042170345783233642578125,
    "speed_a_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_b_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.2099999999999999922284388276239042170345783233642578125,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        }
    },
    "time_window": {
        "start": "2026-07-07T13:52:48+00:00",
        "end": "2026-07-07T15:17:24+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 470m, avg 484m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 85 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b111m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SPECIALITY and ADIL IBRAHIMLI) maintained close proximity (min 470m, avg 484m) for 85 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 7, 2026 13:19 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 4h 47m
  • Data Points: 32 AIS positions
  • Period: 2026-07-07T13:19:34+00:00 to 2026-07-07T18:06:35+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 287,
    "points_in_zone": 32,
    "first_point": {
        "ts": "2026-07-07T13:19:34+00:00",
        "lat": 40.96313330000000263453330262564122676849365234375,
        "lon": 28.768274999999999153033058973960578441619873046875
    },
    "last_point": {
        "ts": "2026-07-07T18:06:35+00:00",
        "lat": 40.9633783000000022411768441088497638702392578125,
        "lon": 28.768216699999999974579623085446655750274658203125
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 7, 2026 13:19 UTC 75.0%
  • Duration: 4h 47m
  • Radius: 25 meters
  • Data Points: 32 AIS positions
  • Centroid: 40.9633, 28.7682
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 25.199999999999999289457264239899814128875732421875,
    "duration_minutes": 287,
    "points": 32,
    "centroid": {
        "lat": 40.963330931249998911880538798868656158447265625,
        "lon": 28.768236503125013570070223067887127399444580078125
    },
    "bbox": {
        "min_lat": 40.96312830000000104746504803188145160675048828125,
        "min_lon": 28.7681366999999994504833011887967586517333984375,
        "max_lat": 40.96353330000000170230123330838978290557861328125,
        "max_lon": 28.768388300000001578382580191828310489654541015625
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Jul 7, 2026 12:31 UTC 57/100
Vessel A: IMO 9285184 (SPECIALITY) MARSHALL ISLANDS
Vessel B: MMSI 630001252 (ADIL IBRAHIMLI) GUINEA BISSAU
  • Minimum Distance: 419 meters
  • Average Distance: 450 meters
  • Duration: 48 minutes
  • Period: 2026-07-07T12:31:12+00:00 to 2026-07-07T13:19:34+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 57/100

Low-confidence STS candidate - may warrant review. Two tankers (SPECIALITY and ADIL IBRAHIMLI) maintained close proximity (min 419m, avg 450m) for 48 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 419m, avg 450m
Duration10/25Duration 48 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency12/15Distance variance ±34m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-07T14:30:14.123272+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538012606,
        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 630001252,
        "name": "ADIL IBRAHIMLI",
        "flag": "GUINEA BISSAU"
    },
    "min_distance_m": 419.3999999999999772626324556767940521240234375,
    "avg_distance_m": 450.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 33.7999999999999971578290569595992565155029296875,
    "duration_minutes": 48.39999999999999857891452847979962825775146484375,
    "overlap_duration_s": 2902,
    "speed_a_avg": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_a_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1700000000000000122124532708767219446599483489990234375,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-07T12:31:12+00:00",
        "end": "2026-07-07T13:19:34+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 57,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 419m, avg 450m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 48 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b134m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Low-confidence STS candidate - may warrant review. Two tankers (SPECIALITY and ADIL IBRAHIMLI) maintained close proximity (min 419m, avg 450m) for 48 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.9650955999999979439962771721184253692626953125,
            "lon": 28.767540600000000239333530771546065807342529296875
        },
        "time_window": {
            "start_ts": "2026-07-07T12:31:12+00:00",
            "end_ts": "2026-07-07T13:19:34+00:00"
        },
        "searched_at": "2026-07-07T14:30:14.123272+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 7, 2026 12:31 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 5h 35m
  • Data Points: 34 AIS positions
  • Period: 2026-07-07T12:31:12+00:00 to 2026-07-07T18:06:35+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 335.3999999999999772626324556767940521240234375,
    "points_in_zone": 34,
    "first_point": {
        "ts": "2026-07-07T12:31:12+00:00",
        "lat": 40.9631949999999989131538313813507556915283203125,
        "lon": 28.7684516999999999598003341816365718841552734375
    },
    "last_point": {
        "ts": "2026-07-07T18:06:35+00:00",
        "lat": 40.9633783000000022411768441088497638702392578125,
        "lon": 28.768216699999999974579623085446655750274658203125
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 7, 2026 12:31 UTC 75.0%
  • Duration: 5h 35m
  • Radius: 24 meters
  • Data Points: 34 AIS positions
  • Centroid: 40.9633, 28.7682
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 24,
    "duration_minutes": 335.3999999999999772626324556767940521240234375,
    "points": 34,
    "centroid": {
        "lat": 40.96332215000000331883711623959243297576904296875,
        "lon": 28.768244602941191345735205686651170253753662109375
    },
    "bbox": {
        "min_lat": 40.96312830000000104746504803188145160675048828125,
        "min_lon": 28.7681366999999994504833011887967586517333984375,
        "max_lat": 40.96353330000000170230123330838978290557861328125,
        "max_lon": 28.7684516999999999598003341816365718841552734375
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts Bosphorus/Dardanelles Approach
Jul 7, 2026 11:03 UTC 70/100
Vessel A: IMO 9388730 (SAVIR TIGER) INDONESIA
Vessel B: IMO 9285184 (SPECIALITY) MARSHALL ISLANDS
  • Minimum Distance: 196 meters
  • Average Distance: 275 meters
  • Duration: 1h 15m
  • Period: 2026-07-07T11:08:32+00:00 to 2026-07-07T12:23:36+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.3 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 196m, avg 275m) for 75 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness20/25Min distance 196m, avg 275m
Duration15/25Duration 75 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency5/15Distance variance ±107m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 525121076,
        "imo": 9388730,
        "name": "SAVIR TIGER",
        "flag": "INDONESIA"
    },
    "vessel_b": {
        "mmsi": 538012606,
        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 195.5,
    "avg_distance_m": 275.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 106.7999999999999971578290569595992565155029296875,
    "duration_minutes": 75.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 4504,
    "speed_a_avg": 0.13000000000000000444089209850062616169452667236328125,
    "speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0.299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.2099999999999999922284388276239042170345783233642578125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.13000000000000000444089209850062616169452667236328125,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-07-07T11:08:32+00:00",
        "end": "2026-07-07T12:23:36+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 196m, avg 275m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 75 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 5,
                "max": 15,
                "detail": "Distance variance \u00b1107m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 196m, avg 275m) for 75 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 7, 2026 11:03 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 35m
  • Data Points: 37 AIS positions
  • Period: 2026-07-07T11:30:47+00:00 to 2026-07-07T18:06:35+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 395.80000000000001136868377216160297393798828125,
    "points_in_zone": 37,
    "first_point": {
        "ts": "2026-07-07T11:30:47+00:00",
        "lat": 40.96319330000000036307028494775295257568359375,
        "lon": 28.7688950000000005502442945726215839385986328125
    },
    "last_point": {
        "ts": "2026-07-07T18:06:35+00:00",
        "lat": 40.9633783000000022411768441088497638702392578125,
        "lon": 28.768216699999999974579623085446655750274658203125
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 7, 2026 11:03 UTC 75.0%
  • Duration: 6h 35m
  • Radius: 58 meters
  • Data Points: 37 AIS positions
  • Centroid: 40.9633, 28.7683
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 57.7000000000000028421709430404007434844970703125,
    "duration_minutes": 395.80000000000001136868377216160297393798828125,
    "points": 37,
    "centroid": {
        "lat": 40.96330814594595182143166312016546726226806640625,
        "lon": 28.768287024324333600588943227194249629974365234375
    },
    "bbox": {
        "min_lat": 40.96307829999999938763721729628741741180419921875,
        "min_lon": 28.7681366999999994504833011887967586517333984375,
        "max_lat": 40.96353330000000170230123330838978290557861328125,
        "max_lon": 28.7689017000000006873960955999791622161865234375
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Jul 7, 2026 10:20 UTC 83/100
Vessel A: IMO 9388730 (SAVIR TIGER) INDONESIA
Vessel B: IMO 9285184 (SPECIALITY) MARSHALL ISLANDS
  • Minimum Distance: 196 meters
  • Average Distance: 269 meters
  • Duration: 2h 3m
  • Period: 2026-07-07T10:20:39+00:00 to 2026-07-07T12:23:36+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.3 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 83/100

High-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 196m, avg 269m) for 123 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). Moderate distance variation observed during the encounter. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness20/25Min distance 196m, avg 269m
Duration25/25Duration 123 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±91m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-07T16:45:01.884916+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 525121076,
        "imo": 9388730,
        "name": "SAVIR TIGER",
        "flag": "INDONESIA"
    },
    "vessel_b": {
        "mmsi": 538012606,
        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 195.5,
    "avg_distance_m": 269.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 91,
    "duration_minutes": 123,
    "overlap_duration_s": 7377,
    "speed_a_avg": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0.25,
    "speed_b_std": 0.200000000000000011102230246251565404236316680908203125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.11000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.25,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-07-07T10:20:39+00:00",
        "end": "2026-07-07T12:23:36+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 83,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 196m, avg 269m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 123 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable 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: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 196m, avg 269m) for 123 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). Moderate distance variation observed during the encounter. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.9621599000000031765011954121291637420654296875,
            "lon": 28.768726799999999599322109133936464786529541015625
        },
        "time_window": {
            "start_ts": "2026-07-07T10:20:39+00:00",
            "end_ts": "2026-07-07T12:23:36+00:00"
        },
        "searched_at": "2026-07-07T16:45:01.884916+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 7, 2026 10:15 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 29m
  • Data Points: 35 AIS positions
  • Period: 2026-07-07T10:57:31+00:00 to 2026-07-07T17:27:18+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 389.80000000000001136868377216160297393798828125,
    "points_in_zone": 35,
    "first_point": {
        "ts": "2026-07-07T10:57:31+00:00",
        "lat": 40.96356329999999701385604566894471645355224609375,
        "lon": 28.768678300000001257785697816871106624603271484375
    },
    "last_point": {
        "ts": "2026-07-07T17:27:18+00:00",
        "lat": 40.963376699999997754275682382285594940185546875,
        "lon": 28.7681366999999994504833011887967586517333984375
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 7, 2026 10:15 UTC 75.0%
  • Duration: 6h 29m
  • Radius: 55 meters
  • Data Points: 35 AIS positions
  • Centroid: 40.9633, 28.7683
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 54.7999999999999971578290569595992565155029296875,
    "duration_minutes": 389.80000000000001136868377216160297393798828125,
    "points": 35,
    "centroid": {
        "lat": 40.963319422857153995209955610334873199462890625,
        "lon": 28.768333660000013907165339333005249500274658203125
    },
    "bbox": {
        "min_lat": 40.96307829999999938763721729628741741180419921875,
        "min_lon": 28.7681366999999994504833011887967586517333984375,
        "max_lat": 40.9636066999999997051418176852166652679443359375,
        "max_lon": 28.7689017000000006873960955999791622161865234375
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Jul 7, 2026 09:29 UTC 83/100
Vessel A: IMO 9388730 (SAVIR TIGER) INDONESIA
Vessel B: IMO 9285184 (SPECIALITY) MARSHALL ISLANDS
  • Minimum Distance: 196 meters
  • Average Distance: 260 meters
  • Duration: 2h 54m
  • Period: 2026-07-07T09:29:36+00:00 to 2026-07-07T12:23:36+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 83/100

High-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 196m, avg 260m) for 174 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). Moderate distance variation observed during the encounter. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness20/25Min distance 196m, avg 260m
Duration25/25Duration 174 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±82m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-07T15:15:09.749819+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 525121076,
        "imo": 9388730,
        "name": "SAVIR TIGER",
        "flag": "INDONESIA"
    },
    "vessel_b": {
        "mmsi": 538012606,
        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 195.5,
    "avg_distance_m": 260,
    "distance_consistency_m": 82.5,
    "duration_minutes": 174,
    "overlap_duration_s": 10440,
    "speed_a_avg": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_avg": 0.2099999999999999922284388276239042170345783233642578125,
    "speed_b_std": 0.200000000000000011102230246251565404236316680908203125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.11000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.2099999999999999922284388276239042170345783233642578125,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-07-07T09:29:36+00:00",
        "end": "2026-07-07T12:23:36+00:00"
    },
    "points_count": {
        "vessel_a": 10,
        "vessel_b": 10
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 83,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 196m, avg 260m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 174 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b182m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 196m, avg 260m) for 174 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). Moderate distance variation observed during the encounter. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.96225249999999817873685969971120357513427734375,
            "lon": 28.76868929999999835445123608224093914031982421875
        },
        "time_window": {
            "start_ts": "2026-07-07T09:29:36+00:00",
            "end_ts": "2026-07-07T12:23:36+00:00"
        },
        "searched_at": "2026-07-07T15:15:09.749819+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 7, 2026 09:26 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 32m
  • Data Points: 28 AIS positions
  • Period: 2026-07-07T09:45:02+00:00 to 2026-07-07T16:17:48+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 392.80000000000001136868377216160297393798828125,
    "points_in_zone": 28,
    "first_point": {
        "ts": "2026-07-07T09:45:02+00:00",
        "lat": 40.9636167000000028792783268727362155914306640625,
        "lon": 28.7685800000000000409272615797817707061767578125
    },
    "last_point": {
        "ts": "2026-07-07T16:17:48+00:00",
        "lat": 40.96331330000000292557160719297826290130615234375,
        "lon": 28.768288299999998258726918720640242099761962890625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 7, 2026 09:26 UTC 75.0%
  • Duration: 6h 32m
  • Radius: 49 meters
  • Data Points: 28 AIS positions
  • Centroid: 40.9633, 28.7684
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 48.7999999999999971578290569595992565155029296875,
    "duration_minutes": 392.80000000000001136868377216160297393798828125,
    "points": 28,
    "centroid": {
        "lat": 40.96331196071428593086238834075629711151123046875,
        "lon": 28.76841070357142626789936912246048450469970703125
    },
    "bbox": {
        "min_lat": 40.96307829999999938763721729628741741180419921875,
        "min_lon": 28.768139999999998934754330548457801342010498046875,
        "max_lat": 40.9636167000000028792783268727362155914306640625,
        "max_lon": 28.7689017000000006873960955999791622161865234375
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts Bosphorus/Dardanelles Approach
Jul 7, 2026 08:17 UTC 83/100
Vessel A: IMO 9388730 (SAVIR TIGER) INDONESIA
Vessel B: IMO 9285184 (SPECIALITY) MARSHALL ISLANDS
  • Minimum Distance: 196 meters
  • Average Distance: 274 meters
  • Duration: 4h 12m
  • Period: 2026-07-07T08:11:34+00:00 to 2026-07-07T12:23:36+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 83/100

High-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 196m, avg 274m) for 252 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). Moderate distance variation observed during the encounter. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness20/25Min distance 196m, avg 274m
Duration25/25Duration 252 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±82m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 525121076,
        "imo": 9388730,
        "name": "SAVIR TIGER",
        "flag": "INDONESIA"
    },
    "vessel_b": {
        "mmsi": 538012606,
        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 195.5,
    "avg_distance_m": 273.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 82.099999999999994315658113919198513031005859375,
    "duration_minutes": 252,
    "overlap_duration_s": 15122,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_avg": 0.179999999999999993338661852249060757458209991455078125,
    "speed_b_std": 0.200000000000000011102230246251565404236316680908203125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.179999999999999993338661852249060757458209991455078125,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-07-07T08:11:34+00:00",
        "end": "2026-07-07T12:23:36+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 83,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 196m, avg 274m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 252 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b182m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 196m, avg 274m) for 252 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). Moderate distance variation observed during the encounter. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 7, 2026 08:17 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 25m
  • Data Points: 21 AIS positions
  • Period: 2026-07-07T08:17:21+00:00 to 2026-07-07T14:42:37+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 385.30000000000001136868377216160297393798828125,
    "points_in_zone": 21,
    "first_point": {
        "ts": "2026-07-07T08:17:21+00:00",
        "lat": 40.9636167000000028792783268727362155914306640625,
        "lon": 28.76834170000000057143552112393081188201904296875
    },
    "last_point": {
        "ts": "2026-07-07T14:42:37+00:00",
        "lat": 40.96312830000000104746504803188145160675048828125,
        "lon": 28.768298300000001432863427908159792423248291015625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 7, 2026 08:17 UTC 75.0%
  • Duration: 6h 25m
  • Radius: 47 meters
  • Data Points: 21 AIS positions
  • Centroid: 40.9634, 28.7685
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 47,
    "duration_minutes": 385.30000000000001136868377216160297393798828125,
    "points": 21,
    "centroid": {
        "lat": 40.9633627809523801488467142917215824127197265625,
        "lon": 28.768488414285716459062314243055880069732666015625
    },
    "bbox": {
        "min_lat": 40.96307829999999938763721729628741741180419921875,
        "min_lon": 28.768139999999998934754330548457801342010498046875,
        "max_lat": 40.9636550000000028148861019872128963470458984375,
        "max_lon": 28.7689017000000006873960955999791622161865234375
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Jul 7, 2026 07:11 UTC 83/100
Vessel A: IMO 9388730 (SAVIR TIGER) INDONESIA
Vessel B: IMO 9285184 (SPECIALITY) MARSHALL ISLANDS
  • Minimum Distance: 196 meters
  • Average Distance: 282 meters
  • Duration: 5h 12m
  • Period: 2026-07-07T07:11:37+00:00 to 2026-07-07T12:23:36+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 83/100

High-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 196m, avg 282m) for 312 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). Moderate distance variation observed during the encounter. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness20/25Min distance 196m, avg 282m
Duration25/25Duration 312 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±72m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-07T14:00:02.019954+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 525121076,
        "imo": 9388730,
        "name": "SAVIR TIGER",
        "flag": "INDONESIA"
    },
    "vessel_b": {
        "mmsi": 538012606,
        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 195.5,
    "avg_distance_m": 281.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 72.2000000000000028421709430404007434844970703125,
    "duration_minutes": 312,
    "overlap_duration_s": 18719,
    "speed_a_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_b_std": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.1700000000000000122124532708767219446599483489990234375,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-07-07T07:11:37+00:00",
        "end": "2026-07-07T12:23:36+00:00"
    },
    "points_count": {
        "vessel_a": 16,
        "vessel_b": 16
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 83,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 196m, avg 282m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 312 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b172m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 196m, avg 282m) for 312 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). Moderate distance variation observed during the encounter. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.96219760000000320587787427939474582672119140625,
            "lon": 28.76833909999999860929165151901543140411376953125
        },
        "time_window": {
            "start_ts": "2026-07-07T07:11:37+00:00",
            "end_ts": "2026-07-07T12:23:36+00:00"
        },
        "searched_at": "2026-07-07T14:00:02.019954+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 7, 2026 07:07 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 29m
  • Data Points: 20 AIS positions
  • Period: 2026-07-07T07:47:08+00:00 to 2026-07-07T14:16:59+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 389.8999999999999772626324556767940521240234375,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-07-07T07:47:08+00:00",
        "lat": 40.963466699999997899794834665954113006591796875,
        "lon": 28.768298300000001432863427908159792423248291015625
    },
    "last_point": {
        "ts": "2026-07-07T14:16:59+00:00",
        "lat": 40.96336000000000154841472976841032505035400390625,
        "lon": 28.768338299999999918554749456234276294708251953125
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 7, 2026 07:07 UTC 75.0%
  • Duration: 6h 29m
  • Radius: 48 meters
  • Data Points: 20 AIS positions
  • Centroid: 40.9634, 28.7685
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 48.2999999999999971578290569595992565155029296875,
    "duration_minutes": 389.8999999999999772626324556767940521240234375,
    "points": 20,
    "centroid": {
        "lat": 40.96338992499999420715539599768817424774169921875,
        "lon": 28.76850067000000166217432706616818904876708984375
    },
    "bbox": {
        "min_lat": 40.96307829999999938763721729628741741180419921875,
        "min_lon": 28.768139999999998934754330548457801342010498046875,
        "max_lat": 40.9636550000000028148861019872128963470458984375,
        "max_lon": 28.7689017000000006873960955999791622161865234375
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts Bosphorus/Dardanelles Approach
Jul 7, 2026 06:40 UTC 83/100
Vessel A: IMO 9388730 (SAVIR TIGER) INDONESIA
Vessel B: IMO 9285184 (SPECIALITY) MARSHALL ISLANDS
  • Minimum Distance: 196 meters
  • Average Distance: 290 meters
  • Duration: 5h 30m
  • Period: 2026-07-07T06:53:34+00:00 to 2026-07-07T12:23:36+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 83/100

High-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 196m, avg 290m) for 330 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). Moderate distance variation observed during the encounter. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness20/25Min distance 196m, avg 290m
Duration25/25Duration 330 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±69m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 525121076,
        "imo": 9388730,
        "name": "SAVIR TIGER",
        "flag": "INDONESIA"
    },
    "vessel_b": {
        "mmsi": 538012606,
        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 195.5,
    "avg_distance_m": 290.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 69.2000000000000028421709430404007434844970703125,
    "duration_minutes": 330,
    "overlap_duration_s": 19802,
    "speed_a_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_b_std": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.1600000000000000033306690738754696212708950042724609375,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-07-07T06:53:34+00:00",
        "end": "2026-07-07T12:23:36+00:00"
    },
    "points_count": {
        "vessel_a": 19,
        "vessel_b": 19
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 83,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 196m, avg 290m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 330 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: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 196m, avg 290m) for 330 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). Moderate distance variation observed during the encounter. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 7, 2026 06:31 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 38m
  • Data Points: 21 AIS positions
  • Period: 2026-07-07T06:40:41+00:00 to 2026-07-07T13:19:34+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 398.8999999999999772626324556767940521240234375,
    "points_in_zone": 21,
    "first_point": {
        "ts": "2026-07-07T06:40:41+00:00",
        "lat": 40.963431700000001001171767711639404296875,
        "lon": 28.76836829999999878282324061729013919830322265625
    },
    "last_point": {
        "ts": "2026-07-07T13:19:34+00:00",
        "lat": 40.96313330000000263453330262564122676849365234375,
        "lon": 28.768274999999999153033058973960578441619873046875
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 7, 2026 06:31 UTC 75.0%
  • Duration: 6h 38m
  • Radius: 51 meters
  • Data Points: 21 AIS positions
  • Centroid: 40.9634, 28.7685
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 50.60000000000000142108547152020037174224853515625,
    "duration_minutes": 398.8999999999999772626324556767940521240234375,
    "points": 21,
    "centroid": {
        "lat": 40.96342984761904659762876690365374088287353515625,
        "lon": 28.7685194476190417844918556511402130126953125
    },
    "bbox": {
        "min_lat": 40.96307829999999938763721729628741741180419921875,
        "min_lon": 28.768274999999999153033058973960578441619873046875,
        "max_lat": 40.9636550000000028148861019872128963470458984375,
        "max_lon": 28.7689017000000006873960955999791622161865234375
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 7, 2026 01:02 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 35m
  • Data Points: 11 AIS positions
  • Period: 2026-07-07T01:41:30+00:00 to 2026-07-07T08:17:21+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 395.8999999999999772626324556767940521240234375,
    "points_in_zone": 11,
    "first_point": {
        "ts": "2026-07-07T01:41:30+00:00",
        "lat": 40.9632849999999990586729836650192737579345703125,
        "lon": 28.7685467000000016923877410590648651123046875
    },
    "last_point": {
        "ts": "2026-07-07T08:17:21+00:00",
        "lat": 40.9636167000000028792783268727362155914306640625,
        "lon": 28.76834170000000057143552112393081188201904296875
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 7, 2026 01:02 UTC 75.0%
  • Duration: 6h 35m
  • Radius: 22 meters
  • Data Points: 11 AIS positions
  • Centroid: 40.9634, 28.7684
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 22.39999999999999857891452847979962825775146484375,
    "duration_minutes": 395.8999999999999772626324556767940521240234375,
    "points": 11,
    "centroid": {
        "lat": 40.9634292545454599121512728743255138397216796875,
        "lon": 28.7684028727272789183189161121845245361328125
    },
    "bbox": {
        "min_lat": 40.9632849999999990586729836650192737579345703125,
        "min_lon": 28.768298300000001432863427908159792423248291015625,
        "max_lat": 40.9636167000000028792783268727362155914306640625,
        "max_lon": 28.768633300000001185026121675036847591400146484375
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts Bosphorus/Dardanelles Approach
Jul 7, 2026 00:28 UTC 65/100
Vessel A: IMO 9285184 (SPECIALITY) MARSHALL ISLANDS
Vessel B: IMO 9388730 (SAVIR TIGER) INDONESIA
  • Minimum Distance: 338 meters
  • Average Distance: 353 meters
  • Duration: 57 minutes
  • Period: 2026-07-07T00:28:59+00:00 to 2026-07-07T01:26:24+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (SPECIALITY and SAVIR TIGER) maintained close proximity (min 338m, avg 353m) 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 338m, avg 353m
Duration10/25Duration 57 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±12m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538012606,
        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 525121076,
        "imo": 9388730,
        "name": "SAVIR TIGER",
        "flag": "INDONESIA"
    },
    "min_distance_m": 337.5,
    "avg_distance_m": 353.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 11.5,
    "duration_minutes": 57.39999999999999857891452847979962825775146484375,
    "overlap_duration_s": 3445,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-07T00:28:59+00:00",
        "end": "2026-07-07T01:26:24+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 338m, avg 353m"
            },
            "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 \u00b112m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SPECIALITY and SAVIR TIGER) maintained close proximity (min 338m, avg 353m) 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 7, 2026 00:06 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 23m
  • Data Points: 14 AIS positions
  • Period: 2026-07-07T00:59:11+00:00 to 2026-07-07T07:22:58+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 383.80000000000001136868377216160297393798828125,
    "points_in_zone": 14,
    "first_point": {
        "ts": "2026-07-07T00:59:11+00:00",
        "lat": 40.9633299999999991314325598068535327911376953125,
        "lon": 28.768454999999999444071363541297614574432373046875
    },
    "last_point": {
        "ts": "2026-07-07T07:22:58+00:00",
        "lat": 40.9633366999999992685843608342111110687255859375,
        "lon": 28.7683549999999996771293808706104755401611328125
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 7, 2026 00:06 UTC 75.0%
  • Duration: 6h 23m
  • Radius: 28 meters
  • Data Points: 14 AIS positions
  • Centroid: 40.9634, 28.7685
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 28.10000000000000142108547152020037174224853515625,
    "duration_minutes": 383.80000000000001136868377216160297393798828125,
    "points": 14,
    "centroid": {
        "lat": 40.9633671428571375372484908439218997955322265625,
        "lon": 28.768457378571429927660574321635067462921142578125
    },
    "bbox": {
        "min_lat": 40.96326330000000126574377645738422870635986328125,
        "min_lon": 28.7683032999999994672180037014186382293701171875,
        "max_lat": 40.9636033000000026049747248180210590362548828125,
        "max_lon": 28.768633300000001185026121675036847591400146484375
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts Bosphorus/Dardanelles Approach
Jul 6, 2026 23:32 UTC 80/100
Vessel A: IMO 9388730 (SAVIR TIGER) INDONESIA
Vessel B: IMO 9285184 (SPECIALITY) MARSHALL ISLANDS
  • Minimum Distance: 293 meters
  • Average Distance: 337 meters
  • Duration: 1h 45m
  • Period: 2026-07-06T23:32:33+00:00 to 2026-07-07T01:17:34+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 292m, avg 337m) for 105 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 Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 292m, avg 337m
Duration20/25Duration 105 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±22m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 525121076,
        "imo": 9388730,
        "name": "SAVIR TIGER",
        "flag": "INDONESIA"
    },
    "vessel_b": {
        "mmsi": 538012606,
        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 292.5,
    "avg_distance_m": 337.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 21.60000000000000142108547152020037174224853515625,
    "duration_minutes": 105,
    "overlap_duration_s": 6301,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-06T23:32:33+00:00",
        "end": "2026-07-07T01:17:34+00:00"
    },
    "points_count": {
        "vessel_a": 14,
        "vessel_b": 14
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 292m, avg 337m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 105 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b122m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 292m, avg 337m) for 105 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 6, 2026 23:01 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 2h 58m
  • Data Points: 20 AIS positions
  • Period: 2026-07-06T23:01:21+00:00 to 2026-07-07T01:59:40+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 178.30000000000001136868377216160297393798828125,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-07-06T23:01:21+00:00",
        "lat": 40.9633232999999989942807587794959545135498046875,
        "lon": 28.768571699999998969587977626360952854156494140625
    },
    "last_point": {
        "ts": "2026-07-07T01:59:40+00:00",
        "lat": 40.96332830000000058134901337325572967529296875,
        "lon": 28.768633300000001185026121675036847591400146484375
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 6, 2026 23:01 UTC 75.0%
  • Duration: 2h 58m
  • Radius: 14 meters
  • Data Points: 20 AIS positions
  • Centroid: 40.9633, 28.7685
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 14.199999999999999289457264239899814128875732421875,
    "duration_minutes": 178.30000000000001136868377216160297393798828125,
    "points": 20,
    "centroid": {
        "lat": 40.963337335000005623442120850086212158203125,
        "lon": 28.768527085000005882875484530813992023468017578125
    },
    "bbox": {
        "min_lat": 40.96326330000000126574377645738422870635986328125,
        "min_lon": 28.7683932999999996127371559850871562957763671875,
        "max_lat": 40.96341499999999768988345749676227569580078125,
        "max_lon": 28.768633300000001185026121675036847591400146484375
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 6, 2026 22:49 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 3h 10m
  • Data Points: 22 AIS positions
  • Period: 2026-07-06T22:49:18+00:00 to 2026-07-07T01:59:40+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 190.400000000000005684341886080801486968994140625,
    "points_in_zone": 22,
    "first_point": {
        "ts": "2026-07-06T22:49:18+00:00",
        "lat": 40.96332670000000319987520924769341945648193359375,
        "lon": 28.768648299999998840803527855314314365386962890625
    },
    "last_point": {
        "ts": "2026-07-07T01:59:40+00:00",
        "lat": 40.96332830000000058134901337325572967529296875,
        "lon": 28.768633300000001185026121675036847591400146484375
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 6, 2026 22:49 UTC 75.0%
  • Duration: 3h 10m
  • Radius: 15 meters
  • Data Points: 22 AIS positions
  • Centroid: 40.9633, 28.7685
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 15,
    "duration_minutes": 190.400000000000005684341886080801486968994140625,
    "points": 22,
    "centroid": {
        "lat": 40.963334245454547044573700986802577972412109375,
        "lon": 28.7685368181818148514139465987682342529296875
    },
    "bbox": {
        "min_lat": 40.96326330000000126574377645738422870635986328125,
        "min_lon": 28.7683932999999996127371559850871562957763671875,
        "max_lat": 40.96341499999999768988345749676227569580078125,
        "max_lon": 28.768648299999998840803527855314314365386962890625
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Jul 6, 2026 20:12 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 5h 47m
  • Data Points: 25 AIS positions
  • Period: 2026-07-06T20:12:08+00:00 to 2026-07-07T01:59:40+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 347.5,
    "points_in_zone": 25,
    "first_point": {
        "ts": "2026-07-06T20:12:08+00:00",
        "lat": 40.96316829999999953315636957995593547821044921875,
        "lon": 28.768756700000000847694536787457764148712158203125
    },
    "last_point": {
        "ts": "2026-07-07T01:59:40+00:00",
        "lat": 40.96332830000000058134901337325572967529296875,
        "lon": 28.768633300000001185026121675036847591400146484375
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Jul 6, 2026 20:12 UTC 75.0%
  • Duration: 5h 47m
  • Radius: 28 meters
  • Data Points: 25 AIS positions
  • Centroid: 40.9633, 28.7685
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 27.800000000000000710542735760100185871124267578125,
    "duration_minutes": 347.5,
    "points": 25,
    "centroid": {
        "lat": 40.96330806799999635359199601225554943084716796875,
        "lon": 28.76854773599999504085644730366766452789306640625
    },
    "bbox": {
        "min_lat": 40.963061699999997244958649389445781707763671875,
        "min_lon": 28.7683932999999996127371559850871562957763671875,
        "max_lat": 40.96341499999999768988345749676227569580078125,
        "max_lon": 28.768756700000000847694536787457764148712158203125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Surveillance Zone
May 25, 2026 21:46 UTC 80.0%
  • Zone: Northern Baltic Surveillance Zone
  • Duration: 1h 30m
  • Data Points: 6 AIS positions
  • Period: 2026-05-25T21:46:55+00:00 to 2026-05-25T23:16:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_102",
    "zone_name": "Alboran Sea Surveillance Zone",
    "dwell_minutes": 90,
    "points_in_zone": 6,
    "first_point": {
        "ts": "2026-05-25T21:46:55+00:00",
        "lat": 37.9566932999999977482730173505842685699462890625,
        "lon": 24.651153300000000712088876753114163875579833984375
    },
    "last_point": {
        "ts": "2026-05-25T23:16:56+00:00",
        "lat": 38.12850830000000001973603502847254276275634765625,
        "lon": 24.7991999999999990222931955941021442413330078125
    }
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Surveillance Zone
May 25, 2026 20:00 UTC 80.0%
  • Zone: Northern Baltic Surveillance Zone
  • Duration: 3h 16m
  • Data Points: 7 AIS positions
  • Period: 2026-05-25T20:00:46+00:00 to 2026-05-25T23:16:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_102",
    "zone_name": "Alboran Sea Surveillance Zone",
    "dwell_minutes": 196.19999999999998863131622783839702606201171875,
    "points_in_zone": 7,
    "first_point": {
        "ts": "2026-05-25T20:00:46+00:00",
        "lat": 37.791398299999997334452928043901920318603515625,
        "lon": 24.4536982999999992216544342227280139923095703125
    },
    "last_point": {
        "ts": "2026-05-25T23:16:56+00:00",
        "lat": 38.12850830000000001973603502847254276275634765625,
        "lon": 24.7991999999999990222931955941021442413330078125
    }
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Surveillance Zone
May 25, 2026 19:01 UTC 80.0%
  • Zone: Northern Baltic Surveillance Zone
  • Duration: 4h 15m
  • Data Points: 28 AIS positions
  • Period: 2026-05-25T19:01:05+00:00 to 2026-05-25T23:16:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_102",
    "zone_name": "Alboran Sea Surveillance Zone",
    "dwell_minutes": 255.80000000000001136868377216160297393798828125,
    "points_in_zone": 28,
    "first_point": {
        "ts": "2026-05-25T19:01:05+00:00",
        "lat": 37.70962670000000116488081403076648712158203125,
        "lon": 24.30577329999999847132130526006221771240234375
    },
    "last_point": {
        "ts": "2026-05-25T23:16:56+00:00",
        "lat": 38.12850830000000001973603502847254276275634765625,
        "lon": 24.7991999999999990222931955941021442413330078125
    }
}
Methodology: 2026.01.18

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.