IMO 9388730
Vessel information
Detected Events (100)
- Zone: Barents Sea Surveillance Zone
- Duration: 3h 39m
- Data Points: 2 AIS positions
- Period: 2026-09-30T03:58:54+00:00 to 2026-09-30T07:38:14+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_124",
"zone_name": "Barents Sea Surveillance Zone",
"dwell_minutes": 219.30000000000001136868377216160297393798828125,
"points_in_zone": 2,
"first_point": {
"ts": "2026-09-30T03:58:54+00:00",
"lat": 36.46352999999999866531652514822781085968017578125,
"lon": 26.792210000000000746922523831017315387725830078125
},
"last_point": {
"ts": "2026-09-30T07:38:14+00:00",
"lat": 35.88433330000000154313966049812734127044677734375,
"lon": 27.448461699999999297006070264615118503570556640625
}
}- Duration: 1h 39m
- Radius: 1,071 meters
- Data Points: 24 AIS positions
- Centroid: 41.4560, 29.4968
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 1071.09999999999990905052982270717620849609375,
"duration_minutes": 99.2999999999999971578290569595992565155029296875,
"points": 24,
"centroid": {
"lat": 41.45596249999999116653270903043448925018310546875,
"lon": 29.49675499583332793918089009821414947509765625
},
"bbox": {
"min_lat": 41.45300830000000047448338591493666172027587890625,
"min_lon": 29.484551700000000806767275207675993442535400390625,
"max_lat": 41.4584550000000007230482879094779491424560546875,
"max_lon": 29.508404999999999773763192933984100818634033203125
},
"zone_id": "osint_bosphorus"
}- Duration: 1h 39m
- Radius: 1,071 meters
- Data Points: 24 AIS positions
- Centroid: 41.4560, 29.4968
- Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 1071.09999999999990905052982270717620849609375,
"duration_minutes": 99.2999999999999971578290569595992565155029296875,
"points": 24,
"centroid": {
"lat": 41.45596249999999116653270903043448925018310546875,
"lon": 29.49675499583332793918089009821414947509765625
},
"bbox": {
"min_lat": 41.45300830000000047448338591493666172027587890625,
"min_lon": 29.484551700000000806767275207675993442535400390625,
"max_lat": 41.4584550000000007230482879094779491424560546875,
"max_lon": 29.508404999999999773763192933984100818634033203125
},
"zone_id": "discovered_029"
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 1h 16m
- Data Points: 17 AIS positions
- Period: 2026-08-18T21:01:26+00:00 to 2026-08-18T22:17:56+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 76.5,
"points_in_zone": 17,
"first_point": {
"ts": "2026-08-18T21:01:26+00:00",
"lat": 41.45156999999999669626049580983817577362060546875,
"lon": 29.480288300000001555645212647505104541778564453125
},
"last_point": {
"ts": "2026-08-18T22:17:56+00:00",
"lat": 41.4567667000000028565409593284130096435546875,
"lon": 29.499808300000001537455318612046539783477783203125
}
}- Zone: Istanbul Black Sea Surveillance Zone
- Duration: 1h 53m
- Data Points: 25 AIS positions
- Period: 2026-08-18T21:01:26+00:00 to 2026-08-18T22:54:56+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_029",
"zone_name": "Istanbul Black Sea Surveillance Zone",
"dwell_minutes": 113.5,
"points_in_zone": 25,
"first_point": {
"ts": "2026-08-18T21:01:26+00:00",
"lat": 41.45156999999999669626049580983817577362060546875,
"lon": 29.480288300000001555645212647505104541778564453125
},
"last_point": {
"ts": "2026-08-18T22:54:56+00:00",
"lat": 41.4584550000000007230482879094779491424560546875,
"lon": 29.508404999999999773763192933984100818634033203125
}
}- Duration: 1h 56m
- Radius: 1,429 meters
- Data Points: 26 AIS positions
- Centroid: 41.4553, 29.4943
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 1429.200000000000045474735088646411895751953125,
"duration_minutes": 116,
"points": 26,
"centroid": {
"lat": 41.45531160384614821623472380451858043670654296875,
"lon": 29.494284288461532383962548919953405857086181640625
},
"bbox": {
"min_lat": 41.45076999999999856072463444434106349945068359375,
"min_lon": 29.478280000000001592752596479840576648712158203125,
"max_lat": 41.45830169999999981200744514353573322296142578125,
"max_lon": 29.5073967000000010330040822736918926239013671875
},
"zone_id": "osint_bosphorus"
}- Duration: 1h 56m
- Radius: 1,429 meters
- Data Points: 26 AIS positions
- Centroid: 41.4553, 29.4943
- Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 1429.200000000000045474735088646411895751953125,
"duration_minutes": 116,
"points": 26,
"centroid": {
"lat": 41.45531160384614821623472380451858043670654296875,
"lon": 29.494284288461532383962548919953405857086181640625
},
"bbox": {
"min_lat": 41.45076999999999856072463444434106349945068359375,
"min_lon": 29.478280000000001592752596479840576648712158203125,
"max_lat": 41.45830169999999981200744514353573322296142578125,
"max_lon": 29.5073967000000010330040822736918926239013671875
},
"zone_id": "discovered_029"
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 2h 14m
- Data Points: 32 AIS positions
- Period: 2026-08-18T20:03:36+00:00 to 2026-08-18T22:17:56+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 134.30000000000001136868377216160297393798828125,
"points_in_zone": 32,
"first_point": {
"ts": "2026-08-18T20:03:36+00:00",
"lat": 41.441609999999997171471477486193180084228515625,
"lon": 29.463004999999999000692696426995098590850830078125
},
"last_point": {
"ts": "2026-08-18T22:17:56+00:00",
"lat": 41.4567667000000028565409593284130096435546875,
"lon": 29.499808300000001537455318612046539783477783203125
}
}- Zone: Istanbul Black Sea Surveillance Zone
- Duration: 2h 51m
- Data Points: 40 AIS positions
- Period: 2026-08-18T20:03:36+00:00 to 2026-08-18T22:54:56+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_029",
"zone_name": "Istanbul Black Sea Surveillance Zone",
"dwell_minutes": 171.30000000000001136868377216160297393798828125,
"points_in_zone": 40,
"first_point": {
"ts": "2026-08-18T20:03:36+00:00",
"lat": 41.441609999999997171471477486193180084228515625,
"lon": 29.463004999999999000692696426995098590850830078125
},
"last_point": {
"ts": "2026-08-18T22:54:56+00:00",
"lat": 41.4584550000000007230482879094779491424560546875,
"lon": 29.508404999999999773763192933984100818634033203125
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 3h 14m
- Data Points: 41 AIS positions
- Period: 2026-08-18T19:03:35+00:00 to 2026-08-18T22:17:56+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 194.30000000000001136868377216160297393798828125,
"points_in_zone": 41,
"first_point": {
"ts": "2026-08-18T19:03:35+00:00",
"lat": 41.426704999999998335624695755541324615478515625,
"lon": 29.4485217000000005782567313872277736663818359375
},
"last_point": {
"ts": "2026-08-18T22:17:56+00:00",
"lat": 41.4567667000000028565409593284130096435546875,
"lon": 29.499808300000001537455318612046539783477783203125
}
}- Zone: Istanbul Black Sea Surveillance Zone
- Duration: 3h 51m
- Data Points: 49 AIS positions
- Period: 2026-08-18T19:03:35+00:00 to 2026-08-18T22:54:56+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_029",
"zone_name": "Istanbul Black Sea Surveillance Zone",
"dwell_minutes": 231.30000000000001136868377216160297393798828125,
"points_in_zone": 49,
"first_point": {
"ts": "2026-08-18T19:03:35+00:00",
"lat": 41.426704999999998335624695755541324615478515625,
"lon": 29.4485217000000005782567313872277736663818359375
},
"last_point": {
"ts": "2026-08-18T22:54:56+00:00",
"lat": 41.4584550000000007230482879094779491424560546875,
"lon": 29.508404999999999773763192933984100818634033203125
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 4h 17m
- Data Points: 59 AIS positions
- Period: 2026-08-18T18:00:03+00:00 to 2026-08-18T22:17:56+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 257.8999999999999772626324556767940521240234375,
"points_in_zone": 59,
"first_point": {
"ts": "2026-08-18T18:00:03+00:00",
"lat": 41.3582616999999999052306520752608776092529296875,
"lon": 29.371933299999998467910700128413736820220947265625
},
"last_point": {
"ts": "2026-08-18T22:17:56+00:00",
"lat": 41.4567667000000028565409593284130096435546875,
"lon": 29.499808300000001537455318612046539783477783203125
}
}- Zone: Istanbul Black Sea Surveillance Zone
- Duration: 4h 54m
- Data Points: 67 AIS positions
- Period: 2026-08-18T18:00:03+00:00 to 2026-08-18T22:54:56+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_029",
"zone_name": "Istanbul Black Sea Surveillance Zone",
"dwell_minutes": 294.8999999999999772626324556767940521240234375,
"points_in_zone": 67,
"first_point": {
"ts": "2026-08-18T18:00:03+00:00",
"lat": 41.3582616999999999052306520752608776092529296875,
"lon": 29.371933299999998467910700128413736820220947265625
},
"last_point": {
"ts": "2026-08-18T22:54:56+00:00",
"lat": 41.4584550000000007230482879094779491424560546875,
"lon": 29.508404999999999773763192933984100818634033203125
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 5h 14m
- Data Points: 71 AIS positions
- Period: 2026-08-18T17:03:40+00:00 to 2026-08-18T22:17:56+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 314.30000000000001136868377216160297393798828125,
"points_in_zone": 71,
"first_point": {
"ts": "2026-08-18T17:03:40+00:00",
"lat": 41.23390500000000002955857780762016773223876953125,
"lon": 29.14041999999999887904778006486594676971435546875
},
"last_point": {
"ts": "2026-08-18T22:17:56+00:00",
"lat": 41.4567667000000028565409593284130096435546875,
"lon": 29.499808300000001537455318612046539783477783203125
}
}- Zone: Istanbul Black Sea Surveillance Zone
- Duration: 5h 51m
- Data Points: 79 AIS positions
- Period: 2026-08-18T17:03:40+00:00 to 2026-08-18T22:54:56+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_029",
"zone_name": "Istanbul Black Sea Surveillance Zone",
"dwell_minutes": 351.30000000000001136868377216160297393798828125,
"points_in_zone": 79,
"first_point": {
"ts": "2026-08-18T17:03:40+00:00",
"lat": 41.23390500000000002955857780762016773223876953125,
"lon": 29.14041999999999887904778006486594676971435546875
},
"last_point": {
"ts": "2026-08-18T22:54:56+00:00",
"lat": 41.4584550000000007230482879094779491424560546875,
"lon": 29.508404999999999773763192933984100818634033203125
}
}- Zone: Istanbul Black Sea Surveillance Zone
- Duration: 6h 3m
- Data Points: 82 AIS positions
- Period: 2026-08-18T16:51:42+00:00 to 2026-08-18T22:54:56+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_029",
"zone_name": "Istanbul Black Sea Surveillance Zone",
"dwell_minutes": 363.19999999999998863131622783839702606201171875,
"points_in_zone": 82,
"first_point": {
"ts": "2026-08-18T16:51:42+00:00",
"lat": 41.20668669999999877973095863126218318939208984375,
"lon": 29.116286699999999854071575100533664226531982421875
},
"last_point": {
"ts": "2026-08-18T22:54:56+00:00",
"lat": 41.4584550000000007230482879094779491424560546875,
"lon": 29.508404999999999773763192933984100818634033203125
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 5h 26m
- Data Points: 74 AIS positions
- Period: 2026-08-18T16:51:42+00:00 to 2026-08-18T22:17:56+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 326.19999999999998863131622783839702606201171875,
"points_in_zone": 74,
"first_point": {
"ts": "2026-08-18T16:51:42+00:00",
"lat": 41.20668669999999877973095863126218318939208984375,
"lon": 29.116286699999999854071575100533664226531982421875
},
"last_point": {
"ts": "2026-08-18T22:17:56+00:00",
"lat": 41.4567667000000028565409593284130096435546875,
"lon": 29.499808300000001537455318612046539783477783203125
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 1h 47m
- Data Points: 8 AIS positions
- Period: 2026-08-18T03:01:40+00:00 to 2026-08-18T04:49:20+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 107.7000000000000028421709430404007434844970703125,
"points_in_zone": 8,
"first_point": {
"ts": "2026-08-18T03:01:40+00:00",
"lat": 40.77156500000000249883669312112033367156982421875,
"lon": 28.775794999999998680095814052037894725799560546875
},
"last_point": {
"ts": "2026-08-18T04:49:20+00:00",
"lat": 40.778518300000001772787072695791721343994140625,
"lon": 28.762751699999999033252606750465929508209228515625
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 2h 3m
- Data Points: 12 AIS positions
- Period: 2026-08-18T02:45:42+00:00 to 2026-08-18T04:49:20+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 123.599999999999994315658113919198513031005859375,
"points_in_zone": 12,
"first_point": {
"ts": "2026-08-18T02:45:42+00:00",
"lat": 40.77106330000000156132955453358590602874755859375,
"lon": 28.777789999999999537294570473022758960723876953125
},
"last_point": {
"ts": "2026-08-18T04:49:20+00:00",
"lat": 40.778518300000001772787072695791721343994140625,
"lon": 28.762751699999999033252606750465929508209228515625
}
}- Duration: 2h 3m
- Radius: 970 meters
- Data Points: 12 AIS positions
- Centroid: 40.7732, 28.7719
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 970.1000000000000227373675443232059478759765625,
"duration_minutes": 123.599999999999994315658113919198513031005859375,
"points": 12,
"centroid": {
"lat": 40.77322430000000252903191721998155117034912109375,
"lon": 28.7718922166666715156679856590926647186279296875
},
"bbox": {
"min_lat": 40.77106330000000156132955453358590602874755859375,
"min_lon": 28.762751699999999033252606750465929508209228515625,
"max_lat": 40.778518300000001772787072695791721343994140625,
"max_lon": 28.777789999999999537294570473022758960723876953125
},
"zone_id": "osint_bosphorus"
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 2h 53m
- Data Points: 13 AIS positions
- Period: 2026-08-18T01:55:52+00:00 to 2026-08-18T04:49:20+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 173.5,
"points_in_zone": 13,
"first_point": {
"ts": "2026-08-18T01:55:52+00:00",
"lat": 40.77039669999999915717125986702740192413330078125,
"lon": 28.78437170000000122627170640043914318084716796875
},
"last_point": {
"ts": "2026-08-18T04:49:20+00:00",
"lat": 40.778518300000001772787072695791721343994140625,
"lon": 28.762751699999999033252606750465929508209228515625
}
}- Duration: 2h 53m
- Radius: 1,050 meters
- Data Points: 13 AIS positions
- Centroid: 40.7730, 28.7729
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 1049.59999999999990905052982270717620849609375,
"duration_minutes": 173.5,
"points": 13,
"centroid": {
"lat": 40.77300679230769020477964659221470355987548828125,
"lon": 28.772852176923077394121719407849013805389404296875
},
"bbox": {
"min_lat": 40.77039669999999915717125986702740192413330078125,
"min_lon": 28.762751699999999033252606750465929508209228515625,
"max_lat": 40.778518300000001772787072695791721343994140625,
"max_lon": 28.78437170000000122627170640043914318084716796875
},
"zone_id": "osint_bosphorus"
}- Duration: 3h 20m
- Radius: 1,221 meters
- Data Points: 14 AIS positions
- Centroid: 40.7725, 28.7761
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 1220.90000000000009094947017729282379150390625,
"duration_minutes": 200.69999999999998863131622783839702606201171875,
"points": 14,
"centroid": {
"lat": 40.77250035714285303356518852524459362030029296875,
"lon": 28.776087614285710714057131554000079631805419921875
},
"bbox": {
"min_lat": 40.77039669999999915717125986702740192413330078125,
"min_lon": 28.767493300000001710259311948902904987335205078125,
"max_lat": 40.77491830000000305744833895005285739898681640625,
"max_lon": 28.79053830000000147038008435629308223724365234375
},
"zone_id": "osint_bosphorus"
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 4h 47m
- Data Points: 18 AIS positions
- Period: 2026-08-18T00:01:32+00:00 to 2026-08-18T04:49:20+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 287.80000000000001136868377216160297393798828125,
"points_in_zone": 18,
"first_point": {
"ts": "2026-08-18T00:01:32+00:00",
"lat": 40.77470329999999876235960982739925384521484375,
"lon": 28.761269999999999669171302230097353458404541015625
},
"last_point": {
"ts": "2026-08-18T04:49:20+00:00",
"lat": 40.778518300000001772787072695791721343994140625,
"lon": 28.762751699999999033252606750465929508209228515625
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 5h 47m
- Data Points: 30 AIS positions
- Period: 2026-08-17T23:01:31+00:00 to 2026-08-18T04:49:20+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 347.80000000000001136868377216160297393798828125,
"points_in_zone": 30,
"first_point": {
"ts": "2026-08-17T23:01:31+00:00",
"lat": 40.8021882999999974117599776946008205413818359375,
"lon": 28.719193300000000590443960390985012054443359375
},
"last_point": {
"ts": "2026-08-18T04:49:20+00:00",
"lat": 40.778518300000001772787072695791721343994140625,
"lon": 28.762751699999999033252606750465929508209228515625
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 33m
- Data Points: 36 AIS positions
- Period: 2026-08-17T22:16:12+00:00 to 2026-08-18T04:49:20+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 393.1000000000000227373675443232059478759765625,
"points_in_zone": 36,
"first_point": {
"ts": "2026-08-17T22:16:12+00:00",
"lat": 40.79049830000000298468876280821859836578369140625,
"lon": 28.736451699999999931378624751232564449310302734375
},
"last_point": {
"ts": "2026-08-18T04:49:20+00:00",
"lat": 40.778518300000001772787072695791721343994140625,
"lon": 28.762751699999999033252606750465929508209228515625
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 13m
- Data Points: 37 AIS positions
- Period: 2026-08-17T21:56:32+00:00 to 2026-08-18T04:10:01+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 373.5,
"points_in_zone": 37,
"first_point": {
"ts": "2026-08-17T21:56:32+00:00",
"lat": 40.78528829999999771871443954296410083770751953125,
"lon": 28.7441417000000001280568540096282958984375
},
"last_point": {
"ts": "2026-08-18T04:10:01+00:00",
"lat": 40.77491830000000305744833895005285739898681640625,
"lon": 28.767493300000001710259311948902904987335205078125
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 34m
- Data Points: 31 AIS positions
- Period: 2026-08-17T20:11:31+00:00 to 2026-08-18T02:45:42+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 394.19999999999998863131622783839702606201171875,
"points_in_zone": 31,
"first_point": {
"ts": "2026-08-17T20:11:31+00:00",
"lat": 40.75818170000000151276253745891153812408447265625,
"lon": 28.78354829999999964229573379270732402801513671875
},
"last_point": {
"ts": "2026-08-18T02:45:42+00:00",
"lat": 40.77106330000000156132955453358590602874755859375,
"lon": 28.777789999999999537294570473022758960723876953125
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 32m
- Data Points: 37 AIS positions
- Period: 2026-08-17T19:23:51+00:00 to 2026-08-18T01:55:52+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 392,
"points_in_zone": 37,
"first_point": {
"ts": "2026-08-17T19:23:51+00:00",
"lat": 40.7280549999999976762410369701683521270751953125,
"lon": 28.83500000000000085265128291212022304534912109375
},
"last_point": {
"ts": "2026-08-18T01:55:52+00:00",
"lat": 40.77039669999999915717125986702740192413330078125,
"lon": 28.78437170000000122627170640043914318084716796875
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 30m
- Data Points: 43 AIS positions
- Period: 2026-08-17T18:21:51+00:00 to 2026-08-18T00:52:20+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 390.5,
"points_in_zone": 43,
"first_point": {
"ts": "2026-08-17T18:21:51+00:00",
"lat": 40.68290329999999954679879010654985904693603515625,
"lon": 28.841196700000001129637894337065517902374267578125
},
"last_point": {
"ts": "2026-08-18T00:52:20+00:00",
"lat": 40.7720867000000026791894924826920032501220703125,
"lon": 28.79053830000000147038008435629308223724365234375
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 20m
- Data Points: 48 AIS positions
- Period: 2026-08-17T17:46:11+00:00 to 2026-08-18T00:07:01+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 380.80000000000001136868377216160297393798828125,
"points_in_zone": 48,
"first_point": {
"ts": "2026-08-17T17:46:11+00:00",
"lat": 40.69002830000000159316186909563839435577392578125,
"lon": 28.840095000000001590478859725408256053924560546875
},
"last_point": {
"ts": "2026-08-18T00:07:01+00:00",
"lat": 40.7751932999999979756466927938163280487060546875,
"lon": 28.764965000000000117097442853264510631561279296875
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 10m
- Data Points: 12 AIS positions
- Period: 2026-07-14T18:03:23+00:00 to 2026-07-15T00:13:48+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 370.3999999999999772626324556767940521240234375,
"points_in_zone": 12,
"first_point": {
"ts": "2026-07-14T18:03:23+00:00",
"lat": 40.95751169999999774518073536455631256103515625,
"lon": 28.769378299999999626379576511681079864501953125
},
"last_point": {
"ts": "2026-07-15T00:13:48+00:00",
"lat": 40.92264329999999716847014497034251689910888671875,
"lon": 28.749646699999999555075191892683506011962890625
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 16m
- Data Points: 13 AIS positions
- Period: 2026-07-14T17:57:24+00:00 to 2026-07-15T00:13:48+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 376.3999999999999772626324556767940521240234375,
"points_in_zone": 13,
"first_point": {
"ts": "2026-07-14T17:57:24+00:00",
"lat": 40.95752499999999685087459511123597621917724609375,
"lon": 28.769535000000001190301190945319831371307373046875
},
"last_point": {
"ts": "2026-07-15T00:13:48+00:00",
"lat": 40.92264329999999716847014497034251689910888671875,
"lon": 28.749646699999999555075191892683506011962890625
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 1h 21m
- Data Points: 8 AIS positions
- Period: 2026-07-14T16:51:22+00:00 to 2026-07-14T18:12:26+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 81.099999999999994315658113919198513031005859375,
"points_in_zone": 8,
"first_point": {
"ts": "2026-07-14T16:51:22+00:00",
"lat": 40.957386700000000701038516126573085784912109375,
"lon": 28.769208299999998956764102331362664699554443359375
},
"last_point": {
"ts": "2026-07-14T18:12:26+00:00",
"lat": 40.957418300000000499494490213692188262939453125,
"lon": 28.76913830000000160680428962223231792449951171875
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 3 hours
- Data Points: 9 AIS positions
- Period: 2026-07-14T15:12:28+00:00 to 2026-07-14T18:12:26+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 180,
"points_in_zone": 9,
"first_point": {
"ts": "2026-07-14T15:12:28+00:00",
"lat": 40.95716329999999771871443954296410083770751953125,
"lon": 28.769738300000000208456185646355152130126953125
},
"last_point": {
"ts": "2026-07-14T18:12:26+00:00",
"lat": 40.957418300000000499494490213692188262939453125,
"lon": 28.76913830000000160680428962223231792449951171875
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 27m
- Data Points: 4 AIS positions
- Period: 2026-07-14T10:27:21+00:00 to 2026-07-14T16:54:19+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 387,
"points_in_zone": 4,
"first_point": {
"ts": "2026-07-14T10:27:21+00:00",
"lat": 40.9577416999999996960468706674873828887939453125,
"lon": 28.771481699999998937755663064308464527130126953125
},
"last_point": {
"ts": "2026-07-14T16:54:19+00:00",
"lat": 40.95745000000000146656020660884678363800048828125,
"lon": 28.769220000000000680984157952480018138885498046875
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 5h 3m
- Data Points: 2 AIS positions
- Period: 2026-07-14T05:24:16+00:00 to 2026-07-14T10:27:21+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 303.1000000000000227373675443232059478759765625,
"points_in_zone": 2,
"first_point": {
"ts": "2026-07-14T05:24:16+00:00",
"lat": 40.958228300000001809166860766708850860595703125,
"lon": 28.77175330000000030850060284137725830078125
},
"last_point": {
"ts": "2026-07-14T10:27:21+00:00",
"lat": 40.9577416999999996960468706674873828887939453125,
"lon": 28.771481699999998937755663064308464527130126953125
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 2h 17m
- Data Points: 2 AIS positions
- Period: 2026-07-14T03:06:22+00:00 to 2026-07-14T05:24:16+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 137.900000000000005684341886080801486968994140625,
"points_in_zone": 2,
"first_point": {
"ts": "2026-07-14T03:06:22+00:00",
"lat": 40.95800669999999854553607292473316192626953125,
"lon": 28.771318300000000789395926403813064098358154296875
},
"last_point": {
"ts": "2026-07-14T05:24:16+00:00",
"lat": 40.958228300000001809166860766708850860595703125,
"lon": 28.77175330000000030850060284137725830078125
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 5h 51m
- Data Points: 3 AIS positions
- Period: 2026-07-13T23:33:18+00:00 to 2026-07-14T05:24:16+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 351,
"points_in_zone": 3,
"first_point": {
"ts": "2026-07-13T23:33:18+00:00",
"lat": 40.95823500000000194631866179406642913818359375,
"lon": 28.7716266999999987774572218768298625946044921875
},
"last_point": {
"ts": "2026-07-14T05:24:16+00:00",
"lat": 40.958228300000001809166860766708850860595703125,
"lon": 28.77175330000000030850060284137725830078125
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 5h 54m
- Data Points: 3 AIS positions
- Period: 2026-07-13T21:12:16+00:00 to 2026-07-14T03:06:22+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 354.1000000000000227373675443232059478759765625,
"points_in_zone": 3,
"first_point": {
"ts": "2026-07-13T21:12:16+00:00",
"lat": 40.95741000000000298086888506077229976654052734375,
"lon": 28.769548300000000295995050691999495029449462890625
},
"last_point": {
"ts": "2026-07-14T03:06:22+00:00",
"lat": 40.95800669999999854553607292473316192626953125,
"lon": 28.771318300000000789395926403813064098358154296875
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 3h 9m
- Data Points: 3 AIS positions
- Period: 2026-07-13T20:24:17+00:00 to 2026-07-13T23:33:18+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 189,
"points_in_zone": 3,
"first_point": {
"ts": "2026-07-13T20:24:17+00:00",
"lat": 40.95893170000000083064151112921535968780517578125,
"lon": 28.767136699999998228349795681424438953399658203125
},
"last_point": {
"ts": "2026-07-13T23:33:18+00:00",
"lat": 40.95823500000000194631866179406642913818359375,
"lon": 28.7716266999999987774572218768298625946044921875
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 3h 12m
- Data Points: 2 AIS positions
- Period: 2026-07-13T02:57:13+00:00 to 2026-07-13T06:09:11+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 192,
"points_in_zone": 2,
"first_point": {
"ts": "2026-07-13T02:57:13+00:00",
"lat": 40.9581783000000001493390300311148166656494140625,
"lon": 28.771601700000001500256985309533774852752685546875
},
"last_point": {
"ts": "2026-07-13T06:09:11+00:00",
"lat": 40.95776000000000038880898500792682170867919921875,
"lon": 28.76914000000000015688783605583012104034423828125
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 4h 48m
- Data Points: 3 AIS positions
- Period: 2026-07-13T01:21:13+00:00 to 2026-07-13T06:09:11+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 288,
"points_in_zone": 3,
"first_point": {
"ts": "2026-07-13T01:21:13+00:00",
"lat": 40.95726830000000262543835560791194438934326171875,
"lon": 28.769826699999999419787855003960430622100830078125
},
"last_point": {
"ts": "2026-07-13T06:09:11+00:00",
"lat": 40.95776000000000038880898500792682170867919921875,
"lon": 28.76914000000000015688783605583012104034423828125
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 5h 30m
- Data Points: 4 AIS positions
- Period: 2026-07-13T00:39:12+00:00 to 2026-07-13T06:09:11+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 330,
"points_in_zone": 4,
"first_point": {
"ts": "2026-07-13T00:39:12+00:00",
"lat": 40.9587532999999979210770106874406337738037109375,
"lon": 28.766999999999999459987520822323858737945556640625
},
"last_point": {
"ts": "2026-07-13T06:09:11+00:00",
"lat": 40.95776000000000038880898500792682170867919921875,
"lon": 28.76914000000000015688783605583012104034423828125
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 27m
- Data Points: 5 AIS positions
- Period: 2026-07-12T23:42:13+00:00 to 2026-07-13T06:09:11+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 387,
"points_in_zone": 5,
"first_point": {
"ts": "2026-07-12T23:42:13+00:00",
"lat": 40.9596216999999995778125594370067119598388671875,
"lon": 28.76698830000000128848114400170743465423583984375
},
"last_point": {
"ts": "2026-07-13T06:09:11+00:00",
"lat": 40.95776000000000038880898500792682170867919921875,
"lon": 28.76914000000000015688783605583012104034423828125
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 5h 42m
- Data Points: 5 AIS positions
- Period: 2026-07-12T21:15:09+00:00 to 2026-07-13T02:57:13+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 342.1000000000000227373675443232059478759765625,
"points_in_zone": 5,
"first_point": {
"ts": "2026-07-12T21:15:09+00:00",
"lat": 40.95898170000000249046934186480939388275146484375,
"lon": 28.76717000000000012960299500264227390289306640625
},
"last_point": {
"ts": "2026-07-13T02:57:13+00:00",
"lat": 40.9581783000000001493390300311148166656494140625,
"lon": 28.771601700000001500256985309533774852752685546875
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 5h 51m
- Data Points: 5 AIS positions
- Period: 2026-07-12T19:30:10+00:00 to 2026-07-13T01:21:13+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 351.1000000000000227373675443232059478759765625,
"points_in_zone": 5,
"first_point": {
"ts": "2026-07-12T19:30:10+00:00",
"lat": 40.95900830000000070185706135816872119903564453125,
"lon": 28.76668670000000105346771306358277797698974609375
},
"last_point": {
"ts": "2026-07-13T01:21:13+00:00",
"lat": 40.95726830000000262543835560791194438934326171875,
"lon": 28.769826699999999419787855003960430622100830078125
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 27m
- Data Points: 5 AIS positions
- Period: 2026-07-12T18:12:12+00:00 to 2026-07-13T00:39:12+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 387,
"points_in_zone": 5,
"first_point": {
"ts": "2026-07-12T18:12:12+00:00",
"lat": 40.9587666999999981953806127421557903289794921875,
"lon": 28.766908300000000764384822105057537555694580078125
},
"last_point": {
"ts": "2026-07-13T00:39:12+00:00",
"lat": 40.9587532999999979210770106874406337738037109375,
"lon": 28.766999999999999459987520822323858737945556640625
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 5h 15m
- Data Points: 4 AIS positions
- Period: 2026-07-12T16:00:11+00:00 to 2026-07-12T21:15:09+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 315,
"points_in_zone": 4,
"first_point": {
"ts": "2026-07-12T16:00:11+00:00",
"lat": 40.9577766999999965946699376218020915985107421875,
"lon": 28.767841700000001736725607770495116710662841796875
},
"last_point": {
"ts": "2026-07-12T21:15:09+00:00",
"lat": 40.95898170000000249046934186480939388275146484375,
"lon": 28.76717000000000012960299500264227390289306640625
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 5h 51m
- Data Points: 6 AIS positions
- Period: 2026-07-12T15:24:05+00:00 to 2026-07-12T21:15:09+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 351.1000000000000227373675443232059478759765625,
"points_in_zone": 6,
"first_point": {
"ts": "2026-07-12T15:24:05+00:00",
"lat": 40.95805829999999758683770778588950634002685546875,
"lon": 28.767495000000000260342858382500708103179931640625
},
"last_point": {
"ts": "2026-07-12T21:15:09+00:00",
"lat": 40.95898170000000249046934186480939388275146484375,
"lon": 28.76717000000000012960299500264227390289306640625
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 2 hours
- Data Points: 8 AIS positions
- Period: 2026-07-12T06:03:08+00:00 to 2026-07-12T08:03:09+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 120,
"points_in_zone": 8,
"first_point": {
"ts": "2026-07-12T06:03:08+00:00",
"lat": 40.95797830000000061545506468974053859710693359375,
"lon": 28.770900000000001028865881380625069141387939453125
},
"last_point": {
"ts": "2026-07-12T08:03:09+00:00",
"lat": 40.95771500000000031604940886609256267547607421875,
"lon": 28.770031700000000540740074939094483852386474609375
}
}- Minimum Distance: 491 meters
- Average Distance: 496 meters
- Duration: 48 minutes
- Period: 2026-07-12T05:47:21+00:00 to 2026-07-12T06:35:21+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (HAVVA ANA and SAVIR TIGER) maintained close proximity (min 491m, avg 496m) for 48 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
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 491m, avg 496m |
| Duration | 10/25 | Duration 48 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±4m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
🛰️ Satellite Corroboration
No satellite imagery for this time/location
No Sentinel-1 scenes covering AOI and time window
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 636023781,
"imo": 9997385,
"name": "HAVVA ANA",
"flag": "LIBERIA"
},
"vessel_b": {
"mmsi": 525121076,
"imo": 9388730,
"name": "SAVIR TIGER",
"flag": "INDONESIA"
},
"min_distance_m": 491.3999999999999772626324556767940521240234375,
"avg_distance_m": 495.6000000000000227373675443232059478759765625,
"distance_consistency_m": 3.70000000000000017763568394002504646778106689453125,
"duration_minutes": 48,
"overlap_duration_s": 2880,
"speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-07-12T05:47:21+00:00",
"end": "2026-07-12T06:35:21+00:00"
},
"points_count": {
"vessel_a": 4,
"vessel_b": 4
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 60,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 491m, avg 496m"
},
"duration": {
"score": 10,
"max": 25,
"detail": "Duration 48 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b14m"
},
"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 (HAVVA ANA and SAVIR TIGER) maintained close proximity (min 491m, avg 496m) for 48 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."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 40.95593939999999832934918231330811977386474609375,
"lon": 28.772344600000000269801603280939161777496337890625
},
"time_window": {
"start_ts": "2026-07-12T05:47:21+00:00",
"end_ts": "2026-07-12T06:35:21+00:00"
},
"searched_at": "2026-07-12T08:00:01.431523+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 2h 51m
- Data Points: 12 AIS positions
- Period: 2026-07-12T05:12:11+00:00 to 2026-07-12T08:03:09+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 171,
"points_in_zone": 12,
"first_point": {
"ts": "2026-07-12T05:12:11+00:00",
"lat": 40.9582233000000002220986061729490756988525390625,
"lon": 28.77147169999999931633283267728984355926513671875
},
"last_point": {
"ts": "2026-07-12T08:03:09+00:00",
"lat": 40.95771500000000031604940886609256267547607421875,
"lon": 28.770031700000000540740074939094483852386474609375
}
}- Duration: 2h 51m
- Radius: 85 meters
- Data Points: 12 AIS positions
- Centroid: 40.9579, 28.7706
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 85.2999999999999971578290569595992565155029296875,
"duration_minutes": 171,
"points": 12,
"centroid": {
"lat": 40.95787610000000000809450284577906131744384765625,
"lon": 28.7705677833333339776800130493938922882080078125
},
"bbox": {
"min_lat": 40.95770999999999872898115427233278751373291015625,
"min_lon": 28.769676700000001545731720398180186748504638671875,
"max_lat": 40.9582233000000002220986061729490756988525390625,
"max_lon": 28.77147169999999931633283267728984355926513671875
},
"zone_id": "osint_bosphorus"
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 3h 54m
- Data Points: 19 AIS positions
- Period: 2026-07-12T04:09:06+00:00 to 2026-07-12T08:03:09+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 234.099999999999994315658113919198513031005859375,
"points_in_zone": 19,
"first_point": {
"ts": "2026-07-12T04:09:06+00:00",
"lat": 40.9582367000000004964022082276642322540283203125,
"lon": 28.77186329999999969686541589908301830291748046875
},
"last_point": {
"ts": "2026-07-12T08:03:09+00:00",
"lat": 40.95771500000000031604940886609256267547607421875,
"lon": 28.770031700000000540740074939094483852386474609375
}
}- Duration: 3h 54m
- Radius: 119 meters
- Data Points: 19 AIS positions
- Centroid: 40.9581, 28.7710
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 119.2999999999999971578290569595992565155029296875,
"duration_minutes": 234.099999999999994315658113919198513031005859375,
"points": 19,
"centroid": {
"lat": 40.95809218947368890439975075423717498779296875,
"lon": 28.771012810526318759229980059899389743804931640625
},
"bbox": {
"min_lat": 40.95770999999999872898115427233278751373291015625,
"min_lon": 28.769676700000001545731720398180186748504638671875,
"max_lat": 40.95862670000000349546098732389509677886962890625,
"max_lon": 28.77186329999999969686541589908301830291748046875
},
"zone_id": "osint_bosphorus"
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 4h 57m
- Data Points: 26 AIS positions
- Period: 2026-07-12T03:06:08+00:00 to 2026-07-12T08:03:09+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 297,
"points_in_zone": 26,
"first_point": {
"ts": "2026-07-12T03:06:08+00:00",
"lat": 40.9579599999999999226929503493010997772216796875,
"lon": 28.77164330000000092013578978367149829864501953125
},
"last_point": {
"ts": "2026-07-12T08:03:09+00:00",
"lat": 40.95771500000000031604940886609256267547607421875,
"lon": 28.770031700000000540740074939094483852386474609375
}
}- Duration: 4h 57m
- Radius: 135 meters
- Data Points: 26 AIS positions
- Centroid: 40.9581, 28.7712
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 134.5,
"duration_minutes": 297,
"points": 26,
"centroid": {
"lat": 40.9580987769230802086894982494413852691650390625,
"lon": 28.771199423076925683062654570676386356353759765625
},
"bbox": {
"min_lat": 40.95770999999999872898115427233278751373291015625,
"min_lon": 28.769676700000001545731720398180186748504638671875,
"max_lat": 40.95862670000000349546098732389509677886962890625,
"max_lon": 28.77186329999999969686541589908301830291748046875
},
"zone_id": "osint_bosphorus"
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 3m
- Data Points: 32 AIS positions
- Period: 2026-07-12T02:00:07+00:00 to 2026-07-12T08:03:09+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 363,
"points_in_zone": 32,
"first_point": {
"ts": "2026-07-12T02:00:07+00:00",
"lat": 40.9579633000000029596776585094630718231201171875,
"lon": 28.771583299999999638885128661058843135833740234375
},
"last_point": {
"ts": "2026-07-12T08:03:09+00:00",
"lat": 40.95771500000000031604940886609256267547607421875,
"lon": 28.770031700000000540740074939094483852386474609375
}
}- Duration: 6h 3m
- Radius: 139 meters
- Data Points: 32 AIS positions
- Centroid: 40.9581, 28.7713
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 138.599999999999994315658113919198513031005859375,
"duration_minutes": 363,
"points": 32,
"centroid": {
"lat": 40.95806463437499900237526162527501583099365234375,
"lon": 28.77126421874999806505002197809517383575439453125
},
"bbox": {
"min_lat": 40.95770999999999872898115427233278751373291015625,
"min_lon": 28.769676700000001545731720398180186748504638671875,
"max_lat": 40.95862670000000349546098732389509677886962890625,
"max_lon": 28.77186329999999969686541589908301830291748046875
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 485 meters
- Average Distance: 490 meters
- Duration: 1h 39m
- Period: 2026-07-12T01:29:21+00:00 to 2026-07-12T03:08:21+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (HAVVA ANA and SAVIR TIGER) maintained close proximity (min 485m, avg 490m) for 99 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 485m, avg 490m |
| Duration | 20/25 | Duration 99 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±3m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 636023781,
"imo": 9997385,
"name": "HAVVA ANA",
"flag": "LIBERIA"
},
"vessel_b": {
"mmsi": 525121076,
"imo": 9388730,
"name": "SAVIR TIGER",
"flag": "INDONESIA"
},
"min_distance_m": 484.69999999999998863131622783839702606201171875,
"avg_distance_m": 490.30000000000001136868377216160297393798828125,
"distance_consistency_m": 3.29999999999999982236431605997495353221893310546875,
"duration_minutes": 99,
"overlap_duration_s": 5940,
"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": "2026-07-12T01:29:21+00:00",
"end": "2026-07-12T03:08:21+00:00"
},
"points_count": {
"vessel_a": 8,
"vessel_b": 8
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 70,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 485m, avg 490m"
},
"duration": {
"score": 20,
"max": 25,
"detail": "Duration 99 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b13m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (HAVVA ANA and SAVIR TIGER) maintained close proximity (min 485m, avg 490m) for 99 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."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 27m
- Data Points: 37 AIS positions
- Period: 2026-07-12T01:36:03+00:00 to 2026-07-12T08:03:09+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 387.1000000000000227373675443232059478759765625,
"points_in_zone": 37,
"first_point": {
"ts": "2026-07-12T01:36:03+00:00",
"lat": 40.95785000000000053432813729159533977508544921875,
"lon": 28.77141329999999896926965448074042797088623046875
},
"last_point": {
"ts": "2026-07-12T08:03:09+00:00",
"lat": 40.95771500000000031604940886609256267547607421875,
"lon": 28.770031700000000540740074939094483852386474609375
}
}- Duration: 6h 27m
- Radius: 141 meters
- Data Points: 37 AIS positions
- Centroid: 40.9580, 28.7713
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 140.599999999999994315658113919198513031005859375,
"duration_minutes": 387.1000000000000227373675443232059478759765625,
"points": 37,
"centroid": {
"lat": 40.95804211891891100094653666019439697265625,
"lon": 28.77129635135134577694770996458828449249267578125
},
"bbox": {
"min_lat": 40.95770999999999872898115427233278751373291015625,
"min_lon": 28.769676700000001545731720398180186748504638671875,
"max_lat": 40.95862670000000349546098732389509677886962890625,
"max_lon": 28.77186329999999969686541589908301830291748046875
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 485 meters
- Average Distance: 490 meters
- Duration: 2h 15m
- Period: 2026-07-12T00:53:21+00:00 to 2026-07-12T03:08:21+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (HAVVA ANA and SAVIR TIGER) maintained close proximity (min 485m, avg 490m) for 135 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 485m, avg 490m |
| Duration | 25/25 | Duration 135 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±4m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 636023781,
"imo": 9997385,
"name": "HAVVA ANA",
"flag": "LIBERIA"
},
"vessel_b": {
"mmsi": 525121076,
"imo": 9388730,
"name": "SAVIR TIGER",
"flag": "INDONESIA"
},
"min_distance_m": 484.69999999999998863131622783839702606201171875,
"avg_distance_m": 489.8999999999999772626324556767940521240234375,
"distance_consistency_m": 3.600000000000000088817841970012523233890533447265625,
"duration_minutes": 135,
"overlap_duration_s": 8100,
"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": "2026-07-12T00:53:21+00:00",
"end": "2026-07-12T03:08:21+00:00"
},
"points_count": {
"vessel_a": 10,
"vessel_b": 10
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 485m, avg 490m"
},
"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": 15,
"max": 15,
"detail": "Distance variance \u00b14m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (HAVVA ANA and SAVIR TIGER) maintained close proximity (min 485m, avg 490m) for 135 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."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 36m
- Data Points: 39 AIS positions
- Period: 2026-07-12T00:51:02+00:00 to 2026-07-12T07:27:09+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 396.1000000000000227373675443232059478759765625,
"points_in_zone": 39,
"first_point": {
"ts": "2026-07-12T00:51:02+00:00",
"lat": 40.95803500000000241243469645269215106964111328125,
"lon": 28.7715366999999986319380695931613445281982421875
},
"last_point": {
"ts": "2026-07-12T07:27:09+00:00",
"lat": 40.957733300000001008811523206532001495361328125,
"lon": 28.769676700000001545731720398180186748504638671875
}
}- Duration: 6h 36m
- Radius: 154 meters
- Data Points: 39 AIS positions
- Centroid: 40.9580, 28.7715
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 153.900000000000005684341886080801486968994140625,
"duration_minutes": 396.1000000000000227373675443232059478759765625,
"points": 39,
"centroid": {
"lat": 40.95804589999999478777681360952556133270263671875,
"lon": 28.771457266666658370013465173542499542236328125
},
"bbox": {
"min_lat": 40.957733300000001008811523206532001495361328125,
"min_lon": 28.769676700000001545731720398180186748504638671875,
"max_lat": 40.95862670000000349546098732389509677886962890625,
"max_lon": 28.77186329999999969686541589908301830291748046875
},
"zone_id": "osint_bosphorus"
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 33m
- Data Points: 48 AIS positions
- Period: 2026-07-11T23:36:06+00:00 to 2026-07-12T06:09:09+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 393.1000000000000227373675443232059478759765625,
"points_in_zone": 48,
"first_point": {
"ts": "2026-07-11T23:36:06+00:00",
"lat": 40.9588566999999983408997650258243083953857421875,
"lon": 28.771873299999999318288246286101639270782470703125
},
"last_point": {
"ts": "2026-07-12T06:09:09+00:00",
"lat": 40.957971700000001646913005970418453216552734375,
"lon": 28.7709100000000006502887117676436901092529296875
}
}- Duration: 6h 33m
- Radius: 82 meters
- Data Points: 48 AIS positions
- Centroid: 40.9582, 28.7716
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 81.7000000000000028421709430404007434844970703125,
"duration_minutes": 393.1000000000000227373675443232059478759765625,
"points": 48,
"centroid": {
"lat": 40.95815649791666857026939396746456623077392578125,
"lon": 28.771575452083329338393014040775597095489501953125
},
"bbox": {
"min_lat": 40.95776500000000197587723960168659687042236328125,
"min_lon": 28.770900000000001028865881380625069141387939453125,
"max_lat": 40.9588566999999983408997650258243083953857421875,
"max_lon": 28.771873299999999318288246286101639270782470703125
},
"zone_id": "osint_bosphorus"
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 18m
- Data Points: 47 AIS positions
- Period: 2026-07-11T22:54:02+00:00 to 2026-07-12T05:12:11+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 378.1000000000000227373675443232059478759765625,
"points_in_zone": 47,
"first_point": {
"ts": "2026-07-11T22:54:02+00:00",
"lat": 40.9588899999999966894392855465412139892578125,
"lon": 28.77194829999999825531631358899176120758056640625
},
"last_point": {
"ts": "2026-07-12T05:12:11+00:00",
"lat": 40.9582233000000002220986061729490756988525390625,
"lon": 28.77147169999999931633283267728984355926513671875
}
}- Duration: 6h 18m
- Radius: 77 meters
- Data Points: 47 AIS positions
- Centroid: 40.9582, 28.7717
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 77,
"duration_minutes": 378.1000000000000227373675443232059478759765625,
"points": 47,
"centroid": {
"lat": 40.9582304680851194689239491708576679229736328125,
"lon": 28.771667657446801769083322142250835895538330078125
},
"bbox": {
"min_lat": 40.95776500000000197587723960168659687042236328125,
"min_lon": 28.771390000000000242152964347042143344879150390625,
"max_lat": 40.9588899999999966894392855465412139892578125,
"max_lon": 28.7719732999999990852302289567887783050537109375
},
"zone_id": "osint_bosphorus"
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 33m
- Data Points: 23 AIS positions
- Period: 2026-07-11T19:03:02+00:00 to 2026-07-12T01:36:03+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 393,
"points_in_zone": 23,
"first_point": {
"ts": "2026-07-11T19:03:02+00:00",
"lat": 40.9596149999999994406607584096491336822509765625,
"lon": 28.767224999999999823785401531495153903961181640625
},
"last_point": {
"ts": "2026-07-12T01:36:03+00:00",
"lat": 40.95785000000000053432813729159533977508544921875,
"lon": 28.77141329999999896926965448074042797088623046875
}
}- Duration: 6h 33m
- Radius: 384 meters
- Data Points: 23 AIS positions
- Centroid: 40.9584, 28.7715
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 384.30000000000001136868377216160297393798828125,
"duration_minutes": 393,
"points": 23,
"centroid": {
"lat": 40.9583925434782685215395758859813213348388671875,
"lon": 28.771495430434786300111227319575846195220947265625
},
"bbox": {
"min_lat": 40.95776500000000197587723960168659687042236328125,
"min_lon": 28.767224999999999823785401531495153903961181640625,
"max_lat": 40.9596149999999994406607584096491336822509765625,
"max_lon": 28.7719732999999990852302289567887783050537109375
},
"zone_id": "osint_bosphorus"
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 30m
- Data Points: 6 AIS positions
- Period: 2026-07-11T16:50:59+00:00 to 2026-07-11T23:21:07+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 390.1000000000000227373675443232059478759765625,
"points_in_zone": 6,
"first_point": {
"ts": "2026-07-11T16:50:59+00:00",
"lat": 40.95960670000000192203515325672924518585205078125,
"lon": 28.76706829999999825986378709785640239715576171875
},
"last_point": {
"ts": "2026-07-11T23:21:07+00:00",
"lat": 40.9586766999999980498614604584872722625732421875,
"lon": 28.771893299999998561133907060138881206512451171875
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 3h 2m
- Data Points: 2 AIS positions
- Period: 2026-07-11T06:03:03+00:00 to 2026-07-11T09:06:00+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 182.900000000000005684341886080801486968994140625,
"points_in_zone": 2,
"first_point": {
"ts": "2026-07-11T06:03:03+00:00",
"lat": 40.960025000000001682565198279917240142822265625,
"lon": 28.767271699999998446628524106927216053009033203125
},
"last_point": {
"ts": "2026-07-11T09:06:00+00:00",
"lat": 40.96074999999999732835931354202330112457275390625,
"lon": 28.76783999999999963392838253639638423919677734375
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 3h 54m
- Data Points: 4 AIS positions
- Period: 2026-07-11T05:11:59+00:00 to 2026-07-11T09:06:00+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 234,
"points_in_zone": 4,
"first_point": {
"ts": "2026-07-11T05:11:59+00:00",
"lat": 40.95869330000000019254002836532890796661376953125,
"lon": 28.767451699999998737666828674264252185821533203125
},
"last_point": {
"ts": "2026-07-11T09:06:00+00:00",
"lat": 40.96074999999999732835931354202330112457275390625,
"lon": 28.76783999999999963392838253639638423919677734375
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 4h 44m
- Data Points: 7 AIS positions
- Period: 2026-07-11T04:21:04+00:00 to 2026-07-11T09:06:00+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 284.8999999999999772626324556767940521240234375,
"points_in_zone": 7,
"first_point": {
"ts": "2026-07-11T04:21:04+00:00",
"lat": 40.95841329999999658184606232680380344390869140625,
"lon": 28.767566699999999713099896325729787349700927734375
},
"last_point": {
"ts": "2026-07-11T09:06:00+00:00",
"lat": 40.96074999999999732835931354202330112457275390625,
"lon": 28.76783999999999963392838253639638423919677734375
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 5h 48m
- Data Points: 8 AIS positions
- Period: 2026-07-11T03:17:56+00:00 to 2026-07-11T09:06:00+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 348.1000000000000227373675443232059478759765625,
"points_in_zone": 8,
"first_point": {
"ts": "2026-07-11T03:17:56+00:00",
"lat": 40.95869830000000177960828295908868312835693359375,
"lon": 28.767450000000000187583282240666449069976806640625
},
"last_point": {
"ts": "2026-07-11T09:06:00+00:00",
"lat": 40.96074999999999732835931354202330112457275390625,
"lon": 28.76783999999999963392838253639638423919677734375
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 36m
- Data Points: 11 AIS positions
- Period: 2026-07-11T02:30:02+00:00 to 2026-07-11T09:06:00+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 396,
"points_in_zone": 11,
"first_point": {
"ts": "2026-07-11T02:30:02+00:00",
"lat": 40.959118300000000090221874415874481201171875,
"lon": 28.76738830000000035624907468445599079132080078125
},
"last_point": {
"ts": "2026-07-11T09:06:00+00:00",
"lat": 40.96074999999999732835931354202330112457275390625,
"lon": 28.76783999999999963392838253639638423919677734375
}
}- Duration: 6h 36m
- Radius: 187 meters
- Data Points: 11 AIS positions
- Centroid: 40.9591, 28.7674
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 187.400000000000005684341886080801486968994140625,
"duration_minutes": 396,
"points": 11,
"centroid": {
"lat": 40.959089836363631320637068711221218109130859375,
"lon": 28.767442272727269170218278304673731327056884765625
},
"bbox": {
"min_lat": 40.95841329999999658184606232680380344390869140625,
"min_lon": 28.767179999999999751025825389660894870758056640625,
"max_lat": 40.96074999999999732835931354202330112457275390625,
"max_lon": 28.76783999999999963392838253639638423919677734375
},
"zone_id": "osint_bosphorus"
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 4h 54m
- Data Points: 19 AIS positions
- Period: 2026-07-11T01:09:04+00:00 to 2026-07-11T06:03:03+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 294,
"points_in_zone": 19,
"first_point": {
"ts": "2026-07-11T01:09:04+00:00",
"lat": 40.95904329999999760048012831248342990875244140625,
"lon": 28.767269999999999896544977673329412937164306640625
},
"last_point": {
"ts": "2026-07-11T06:03:03+00:00",
"lat": 40.960025000000001682565198279917240142822265625,
"lon": 28.767271699999998446628524106927216053009033203125
}
}- Duration: 4h 54m
- Radius: 112 meters
- Data Points: 19 AIS positions
- Centroid: 40.9590, 28.7673
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 112.2000000000000028421709430404007434844970703125,
"duration_minutes": 294,
"points": 19,
"centroid": {
"lat": 40.95901631052631586271672858856618404388427734375,
"lon": 28.767348952631579095395863987505435943603515625
},
"bbox": {
"min_lat": 40.95841329999999658184606232680380344390869140625,
"min_lon": 28.767179999999999751025825389660894870758056640625,
"max_lat": 40.960025000000001682565198279917240142822265625,
"max_lon": 28.767630000000000478621586808003485202789306640625
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 481 meters
- Average Distance: 489 meters
- Duration: 2h 15m
- Period: 2026-07-11T00:19:33+00:00 to 2026-07-11T02:34:35+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (MARINA and SAVIR TIGER) maintained close proximity (min 481m, avg 489m) for 135 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
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 481m, avg 489m |
| Duration | 25/25 | Duration 135 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±6m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
🛰️ Satellite Corroboration
No satellite imagery for this time/location
No Sentinel-1 scenes covering AOI and time window
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 677054300,
"imo": 9005493,
"name": "MARINA",
"flag": "TANZANIA"
},
"vessel_b": {
"mmsi": 525121076,
"imo": 9388730,
"name": "SAVIR TIGER",
"flag": "INDONESIA"
},
"min_distance_m": 481,
"avg_distance_m": 488.80000000000001136868377216160297393798828125,
"distance_consistency_m": 6.20000000000000017763568394002504646778106689453125,
"duration_minutes": 135,
"overlap_duration_s": 8102,
"speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
"speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
"speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-07-11T00:19:33+00:00",
"end": "2026-07-11T02:34:35+00:00"
},
"points_count": {
"vessel_a": 6,
"vessel_b": 6
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 481m, avg 489m"
},
"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": 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 (MARINA and SAVIR TIGER) maintained close proximity (min 481m, avg 489m) for 135 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."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 40.9579700999999971600118442438542842864990234375,
"lon": 28.764817799999999436977304867468774318695068359375
},
"time_window": {
"start_ts": "2026-07-11T00:19:33+00:00",
"end_ts": "2026-07-11T02:34:35+00:00"
},
"searched_at": "2026-07-11T06:30:01.723088+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6 hours
- Data Points: 26 AIS positions
- Period: 2026-07-11T00:02:55+00:00 to 2026-07-11T06:03:03+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 360.1000000000000227373675443232059478759765625,
"points_in_zone": 26,
"first_point": {
"ts": "2026-07-11T00:02:55+00:00",
"lat": 40.95861670000000032132447813637554645538330078125,
"lon": 28.76756830000000064728737925179302692413330078125
},
"last_point": {
"ts": "2026-07-11T06:03:03+00:00",
"lat": 40.960025000000001682565198279917240142822265625,
"lon": 28.767271699999998446628524106927216053009033203125
}
}- Duration: 6 hours
- Radius: 120 meters
- Data Points: 26 AIS positions
- Centroid: 40.9590, 28.7674
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 119.5,
"duration_minutes": 360.1000000000000227373675443232059478759765625,
"points": 26,
"centroid": {
"lat": 40.958951403846157290900009684264659881591796875,
"lon": 28.76736371923077939527502167038619518280029296875
},
"bbox": {
"min_lat": 40.95841329999999658184606232680380344390869140625,
"min_lon": 28.767179999999999751025825389660894870758056640625,
"max_lat": 40.960025000000001682565198279917240142822265625,
"max_lon": 28.767630000000000478621586808003485202789306640625
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 455 meters
- Average Distance: 482 meters
- Duration: 2h 57m
- Period: 2026-07-10T23:37:34+00:00 to 2026-07-11T02:34:35+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (MARINA and SAVIR TIGER) maintained close proximity (min 455m, avg 482m) for 177 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 455m, avg 482m |
| Duration | 25/25 | Duration 177 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±14m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 677054300,
"imo": 9005493,
"name": "MARINA",
"flag": "TANZANIA"
},
"vessel_b": {
"mmsi": 525121076,
"imo": 9388730,
"name": "SAVIR TIGER",
"flag": "INDONESIA"
},
"min_distance_m": 455.30000000000001136868377216160297393798828125,
"avg_distance_m": 482.3999999999999772626324556767940521240234375,
"distance_consistency_m": 13.5999999999999996447286321199499070644378662109375,
"duration_minutes": 177,
"overlap_duration_s": 10621,
"speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-07-10T23:37:34+00:00",
"end": "2026-07-11T02:34:35+00:00"
},
"points_count": {
"vessel_a": 8,
"vessel_b": 8
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 455m, avg 482m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 177 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 (MARINA and SAVIR TIGER) maintained close proximity (min 455m, avg 482m) for 177 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."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 27m
- Data Points: 29 AIS positions
- Period: 2026-07-10T23:35:59+00:00 to 2026-07-11T06:03:03+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 387.1000000000000227373675443232059478759765625,
"points_in_zone": 29,
"first_point": {
"ts": "2026-07-10T23:35:59+00:00",
"lat": 40.95835670000000305890353047288954257965087890625,
"lon": 28.767341699999999349302015616558492183685302734375
},
"last_point": {
"ts": "2026-07-11T06:03:03+00:00",
"lat": 40.960025000000001682565198279917240142822265625,
"lon": 28.767271699999998446628524106927216053009033203125
}
}- Duration: 6h 27m
- Radius: 125 meters
- Data Points: 29 AIS positions
- Centroid: 40.9589, 28.7674
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 125.2000000000000028421709430404007434844970703125,
"duration_minutes": 387.1000000000000227373675443232059478759765625,
"points": 29,
"centroid": {
"lat": 40.9588997655172448730809264816343784332275390625,
"lon": 28.7673689689655276424673502333462238311767578125
},
"bbox": {
"min_lat": 40.95835670000000305890353047288954257965087890625,
"min_lon": 28.767179999999999751025825389660894870758056640625,
"max_lat": 40.960025000000001682565198279917240142822265625,
"max_lon": 28.767630000000000478621586808003485202789306640625
},
"zone_id": "osint_bosphorus"
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 1h 42m
- Data Points: 4 AIS positions
- Period: 2026-07-10T05:26:53+00:00 to 2026-07-10T07:08:53+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 102,
"points_in_zone": 4,
"first_point": {
"ts": "2026-07-10T05:26:53+00:00",
"lat": 40.95826000000000277623257716186344623565673828125,
"lon": 28.76798169999999998935891198925673961639404296875
},
"last_point": {
"ts": "2026-07-10T07:08:53+00:00",
"lat": 40.9584550000000007230482879094779491424560546875,
"lon": 28.767771700000000834052116260863840579986572265625
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 3h 36m
- Data Points: 5 AIS positions
- Period: 2026-07-10T03:32:52+00:00 to 2026-07-10T07:08:53+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 216,
"points_in_zone": 5,
"first_point": {
"ts": "2026-07-10T03:32:52+00:00",
"lat": 40.9586867000000012239979696460068225860595703125,
"lon": 28.767611699999999785859472467564046382904052734375
},
"last_point": {
"ts": "2026-07-10T07:08:53+00:00",
"lat": 40.9584550000000007230482879094779491424560546875,
"lon": 28.767771700000000834052116260863840579986572265625
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 3h 21m
- Data Points: 5 AIS positions
- Period: 2026-07-09T01:02:48+00:00 to 2026-07-09T04:23:48+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 201,
"points_in_zone": 5,
"first_point": {
"ts": "2026-07-09T01:02:48+00:00",
"lat": 40.9580600000000032423486118204891681671142578125,
"lon": 28.7677766999999988684066920541226863861083984375
},
"last_point": {
"ts": "2026-07-09T04:23:48+00:00",
"lat": 40.95790170000000074423951446078717708587646484375,
"lon": 28.76806330000000144764271681196987628936767578125
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 4h 6m
- Data Points: 8 AIS positions
- Period: 2026-07-09T00:17:42+00:00 to 2026-07-09T04:23:48+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 246.099999999999994315658113919198513031005859375,
"points_in_zone": 8,
"first_point": {
"ts": "2026-07-09T00:17:42+00:00",
"lat": 40.958588300000002391243469901382923126220703125,
"lon": 28.76727329999999938081600703299045562744140625
},
"last_point": {
"ts": "2026-07-09T04:23:48+00:00",
"lat": 40.95790170000000074423951446078717708587646484375,
"lon": 28.76806330000000144764271681196987628936767578125
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 1 hours
- Data Points: 6 AIS positions
- Period: 2026-07-08T13:08:43+00:00 to 2026-07-08T14:08:43+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 60,
"points_in_zone": 6,
"first_point": {
"ts": "2026-07-08T13:08:43+00:00",
"lat": 40.9612283000000019228536984883248805999755859375,
"lon": 28.770610000000001349462763755582273006439208984375
},
"last_point": {
"ts": "2026-07-08T14:08:43+00:00",
"lat": 40.9607749999999981582732289098203182220458984375,
"lon": 28.770651699999998385237631737254559993743896484375
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 1h 45m
- Data Points: 11 AIS positions
- Period: 2026-07-08T12:23:43+00:00 to 2026-07-08T14:08:43+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 105,
"points_in_zone": 11,
"first_point": {
"ts": "2026-07-08T12:23:43+00:00",
"lat": 40.9614600000000024238033802248537540435791015625,
"lon": 28.7698232999999987669070833362638950347900390625
},
"last_point": {
"ts": "2026-07-08T14:08:43+00:00",
"lat": 40.9607749999999981582732289098203182220458984375,
"lon": 28.770651699999998385237631737254559993743896484375
}
}- Duration: 1h 45m
- Radius: 55 meters
- Data Points: 11 AIS positions
- Centroid: 40.9612, 28.7704
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 55.10000000000000142108547152020037174224853515625,
"duration_minutes": 105,
"points": 11,
"centroid": {
"lat": 40.96123030909091511375663685612380504608154296875,
"lon": 28.770390299999998973135006963275372982025146484375
},
"bbox": {
"min_lat": 40.9607749999999981582732289098203182220458984375,
"min_lon": 28.7698232999999987669070833362638950347900390625,
"max_lat": 40.9614600000000024238033802248537540435791015625,
"max_lon": 28.770708299999999013607521192170679569244384765625
},
"zone_id": "osint_bosphorus"
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 2h 45m
- Data Points: 13 AIS positions
- Period: 2026-07-08T11:23:43+00:00 to 2026-07-08T14:08:43+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 165,
"points_in_zone": 13,
"first_point": {
"ts": "2026-07-08T11:23:43+00:00",
"lat": 40.9611850000000004001776687800884246826171875,
"lon": 28.768146699999999071906131575815379619598388671875
},
"last_point": {
"ts": "2026-07-08T14:08:43+00:00",
"lat": 40.9607749999999981582732289098203182220458984375,
"lon": 28.770651699999998385237631737254559993743896484375
}
}- Duration: 2h 45m
- Radius: 166 meters
- Data Points: 13 AIS positions
- Centroid: 40.9612, 28.7701
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 165.5,
"duration_minutes": 165,
"points": 13,
"centroid": {
"lat": 40.96124141538461316258690203540027141571044921875,
"lon": 28.77011063846153859913101769052445888519287109375
},
"bbox": {
"min_lat": 40.9607749999999981582732289098203182220458984375,
"min_lon": 28.768146699999999071906131575815379619598388671875,
"max_lat": 40.9614600000000024238033802248537540435791015625,
"max_lon": 28.770708299999999013607521192170679569244384765625
},
"zone_id": "osint_bosphorus"
}- 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
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
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 15/25 | Min distance 234m, avg 248m |
| Duration | 5/25 | Duration 36 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±13m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 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."
}
}- 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
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
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 15/25 | Min distance 240m, avg 282m |
| Duration | 25/25 | Duration 135 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 12/15 | Distance variance ±31m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In 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."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 4h 42m
- Data Points: 19 AIS positions
- Period: 2026-07-08T09:26:39+00:00 to 2026-07-08T14:08:43+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 282.1000000000000227373675443232059478759765625,
"points_in_zone": 19,
"first_point": {
"ts": "2026-07-08T09:26:39+00:00",
"lat": 40.96081170000000071240719989873468875885009765625,
"lon": 28.767295000000000726458893041126430034637451171875
},
"last_point": {
"ts": "2026-07-08T14:08:43+00:00",
"lat": 40.9607749999999981582732289098203182220458984375,
"lon": 28.770651699999998385237631737254559993743896484375
}
}- Duration: 4h 42m
- Radius: 169 meters
- Data Points: 19 AIS positions
- Centroid: 40.9611, 28.7692
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 168.5,
"duration_minutes": 282.1000000000000227373675443232059478759765625,
"points": 19,
"centroid": {
"lat": 40.96113369473685139610097394324839115142822265625,
"lon": 28.769235610526312285628591780550777912139892578125
},
"bbox": {
"min_lat": 40.9607749999999981582732289098203182220458984375,
"min_lon": 28.767268300000001346461431239731609821319580078125,
"max_lat": 40.9614600000000024238033802248537540435791015625,
"max_lon": 28.770708299999999013607521192170679569244384765625
},
"zone_id": "osint_bosphorus"
}Recent Position Data
| Time (UTC) | Lat | Lon | Speed | Course | Zone |
|---|---|---|---|---|---|
| Sep 30 07:38 | 35.8843 | 27.4485 | 12.9 kn | 140.6° | Unknown Maritime Zone Near 54.3°N, -10.9°E |
| Sep 30 03:58 | 36.4635 | 26.7922 | 12.5 kn | 138.3° | Barents Sea Surveillance Zone |
| Sep 26 11:53 | 40.8780 | 28.5478 | 12.8 kn | 262.2° | Bosphorus/Dardanelles Approach |
| Sep 26 11:18 | 40.8957 | 28.7098 | 13.0 kn | 261.5° | Bosphorus/Dardanelles Approach |
| Sep 26 11:16 | 40.8969 | 28.7199 | 12.9 kn | 260.9° | Bosphorus/Dardanelles Approach |
| Sep 26 11:15 | 40.8976 | 28.7253 | 12.9 kn | 260.4° | Bosphorus/Dardanelles Approach |
| Sep 26 11:14 | 40.8981 | 28.7300 | 12.9 kn | 260.0° | Bosphorus/Dardanelles Approach |
| Sep 26 11:09 | 40.9012 | 28.7522 | 12.6 kn | 260.2° | Bosphorus/Dardanelles Approach |
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.
