SPHERE

IMO 9323974

Vessel information

Vessel Name SPHERE View name history 📜
IMO Number 9323974
MMSI 511101787
Vessel Type Oil Tanker | Navire-citerne pour produits pétroliers
Flag 🇷🇺 Russia View flag history 📜
Call Sign T8A5276
Gross Tonnage 56,285 GT
Year Built 2006

Sanctioned by

🇪🇺 EU 2025-07-20🇬🇧 UK 2025-05-09

Company & Ownership

🏢
Sunflower Marine Inc
IMO Company: 6441220
Address Suite 212, 2nd Floor, Block A, Unity House, Victoria, Mahe Island, Seychelles.
Status Active
Fleet 1.0 owner, 1.0 operator, 1.0 manager, 0.0 beneficial

Management & Operations

ISM Manager
XI LONG SHAN SHIPMANAGEMENT CO
Room 305, 669, Miaochuan Lu, Pudong Xinqu, Shanghai, 200000, China.
Commercial Manager
BO HANG MARITIME LTD
Suite 212, 2nd Floor, Block A, Unity House, Victoria, Mahe Island, Seychelles.
Registered Owner
SUNFLOWER MARINE INC
Room 13, 27th Floor, Ho King Commercial Centre, 2-16, Fa Yuen Street, Mong Kok, Kowloon, Hong Kong, China.

Classification & Safety

Current Classification
Russian Maritime Register of Shipping Delivered

Port State Control (PSC) Inspections

⚠️
Risk Level
LOW
Last 36 Months
1
Inspections
Last Inspection
📍 Constanta
📅 2023-10-06

Survey Renewal & Certificates

Code Type Issuer Issued Expires
501 Cargo Ship Safety Construction RINA Services S.p.A. (186) 30/03/2022 13/11/2026
503 Cargo Ship Safety Radio RINA 30/03/2022 13/11/2026

Programs & Notes

EU Russia Sanctions – Shadow Fleet | SEMA (Canada) — vessel designations | The Russia (Sanctions) (EU Exit) Regulations 2019

DateOfListing: 2025-07-20 || DateDesignated: 2025-05-09 | Shipping sanctions: (see “Other information”) | Shipping sanctions: a specified ship is prohibited from being provided with access to or having its master or pilot cause it to enter a port in the UK, may have its registration on the UK Ship Register terminated, and a master or pilot of a specified ship may be given a port barring direction, a detention direction, and a port entry direction or a movement direction. | IMO 9323974 (MARBLE) is involved in activity whose object or effect is to destabilise Ukraine or undermine or threaten the territorial integrity, sovereignty or independence of Ukraine or to obtain a benefit from or support the Government of Russia. Namely, MARBLE is involved in carrying oil or oil products that originated in Russia from Russia to a third country.

Vessel Changes

12 changes

AIS Events

50 events detected • 1 zone • Last: Sep 6, 2026

Loiter Eastern Black Sea Surveillance Zone Sep 6, 2026 22:00 UTC 75.0%
  • Duration: 6h 32m
  • Radius: 51 meters
  • Data Points: 24 AIS positions
  • Centroid: 31.5219, 32.3077
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 50.60000000000000142108547152020037174224853515625,
    "duration_minutes": 392.80000000000001136868377216160297393798828125,
    "points": 24,
    "centroid": {
        "lat": 31.521856183333337497742832056246697902679443359375,
        "lon": 32.30768652500000115423972602002322673797607421875
    },
    "bbox": {
        "min_lat": 31.5214832999999998719431459903717041015625,
        "min_lon": 32.30738000000000198497218661941587924957275390625,
        "max_lat": 31.5222049999999995861799106933176517486572265625,
        "max_lon": 32.30788170000000292247932520695030689239501953125
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 6, 2026 22:00 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 32m
  • Data Points: 24 AIS positions
  • Period: 2026-09-06T22:25:27+00:00 to 2026-09-07T04:58:16+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 392.80000000000001136868377216160297393798828125,
    "points_in_zone": 24,
    "first_point": {
        "ts": "2026-09-06T22:25:27+00:00",
        "lat": 31.5214832999999998719431459903717041015625,
        "lon": 32.30738000000000198497218661941587924957275390625
    },
    "last_point": {
        "ts": "2026-09-07T04:58:16+00:00",
        "lat": 31.521771699999998617158780689351260662078857421875,
        "lon": 32.30763329999999911024133325554430484771728515625
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 6, 2026 21:06 UTC 75.0%
  • Duration: 6h 37m
  • Radius: 57 meters
  • Data Points: 30 AIS positions
  • Centroid: 31.5218, 32.3076
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 57.2999999999999971578290569595992565155029296875,
    "duration_minutes": 397.30000000000001136868377216160297393798828125,
    "points": 30,
    "centroid": {
        "lat": 31.521751386666668537372970604337751865386962890625,
        "lon": 32.30759249999999127567207324318587779998779296875
    },
    "bbox": {
        "min_lat": 31.52141830000000055633790907450020313262939453125,
        "min_lon": 32.30727999999999866531652514822781085968017578125,
        "max_lat": 31.5222049999999995861799106933176517486572265625,
        "max_lon": 32.30788170000000292247932520695030689239501953125
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 6, 2026 21:06 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 37m
  • Data Points: 30 AIS positions
  • Period: 2026-09-06T21:42:05+00:00 to 2026-09-07T04:19:21+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 397.30000000000001136868377216160297393798828125,
    "points_in_zone": 30,
    "first_point": {
        "ts": "2026-09-06T21:42:05+00:00",
        "lat": 31.5215333000000015317709767259657382965087890625,
        "lon": 32.30743830000000116342562250792980194091796875
    },
    "last_point": {
        "ts": "2026-09-07T04:19:21+00:00",
        "lat": 31.52177830000000113841451820917427539825439453125,
        "lon": 32.307698299999998425846570171415805816650390625
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 6, 2026 19:01 UTC 75.0%
  • Duration: 6h 34m
  • Radius: 66 meters
  • Data Points: 30 AIS positions
  • Centroid: 31.5217, 32.3075
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 65.599999999999994315658113919198513031005859375,
    "duration_minutes": 394.3999999999999772626324556767940521240234375,
    "points": 30,
    "centroid": {
        "lat": 31.5216924399999953720907797105610370635986328125,
        "lon": 32.3075372833333318567383685149252414703369140625
    },
    "bbox": {
        "min_lat": 31.5214050000000014506440493278205394744873046875,
        "min_lon": 32.30727999999999866531652514822781085968017578125,
        "max_lat": 31.5222049999999995861799106933176517486572265625,
        "max_lon": 32.30788170000000292247932520695030689239501953125
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 6, 2026 19:01 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 34m
  • Data Points: 30 AIS positions
  • Period: 2026-09-06T19:42:03+00:00 to 2026-09-07T02:16:24+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 394.3999999999999772626324556767940521240234375,
    "points_in_zone": 30,
    "first_point": {
        "ts": "2026-09-06T19:42:03+00:00",
        "lat": 31.5215333000000015317709767259657382965087890625,
        "lon": 32.30747670000000226764313993044197559356689453125
    },
    "last_point": {
        "ts": "2026-09-07T02:16:24+00:00",
        "lat": 31.522148300000001341913957730866968631744384765625,
        "lon": 32.30783999999999878127709962427616119384765625
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 6, 2026 18:00 UTC 75.0%
  • Duration: 6h 34m
  • Radius: 55 meters
  • Data Points: 29 AIS positions
  • Centroid: 31.5216, 32.3075
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 54.7999999999999971578290569595992565155029296875,
    "duration_minutes": 394.3999999999999772626324556767940521240234375,
    "points": 29,
    "centroid": {
        "lat": 31.52159063103447778075860696844756603240966796875,
        "lon": 32.307477303448280281372717581689357757568359375
    },
    "bbox": {
        "min_lat": 31.5214050000000014506440493278205394744873046875,
        "min_lon": 32.30727999999999866531652514822781085968017578125,
        "max_lat": 31.521981700000001325179255218245089054107666015625,
        "max_lon": 32.30783000000000271256794803775846958160400390625
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 6, 2026 18:00 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 34m
  • Data Points: 29 AIS positions
  • Period: 2026-09-06T18:42:04+00:00 to 2026-09-07T01:16:26+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 394.3999999999999772626324556767940521240234375,
    "points_in_zone": 29,
    "first_point": {
        "ts": "2026-09-06T18:42:04+00:00",
        "lat": 31.521558299999998808971213293261826038360595703125,
        "lon": 32.30753829999999737765392637811601161956787109375
    },
    "last_point": {
        "ts": "2026-09-07T01:16:26+00:00",
        "lat": 31.521981700000001325179255218245089054107666015625,
        "lon": 32.30783000000000271256794803775846958160400390625
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 6, 2026 17:19 UTC 75.0%
  • Duration: 6h 28m
  • Radius: 35 meters
  • Data Points: 35 AIS positions
  • Centroid: 31.5215, 32.3075
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 34.7999999999999971578290569595992565155029296875,
    "duration_minutes": 388.3999999999999772626324556767940521240234375,
    "points": 35,
    "centroid": {
        "lat": 31.521538908571432813232604530639946460723876953125,
        "lon": 32.307454665714288921662955544888973236083984375
    },
    "bbox": {
        "min_lat": 31.521343300000001619309841771610081195831298828125,
        "min_lon": 32.30727999999999866531652514822781085968017578125,
        "max_lat": 31.521809999999998552766555803827941417694091796875,
        "max_lon": 32.30763830000000069730958784930408000946044921875
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 6, 2026 17:19 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 28m
  • Data Points: 35 AIS positions
  • Period: 2026-09-06T17:23:57+00:00 to 2026-09-06T23:52:23+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 388.3999999999999772626324556767940521240234375,
    "points_in_zone": 35,
    "first_point": {
        "ts": "2026-09-06T17:23:57+00:00",
        "lat": 31.5214567000000016605554264970123767852783203125,
        "lon": 32.30737830000000343488864018581807613372802734375
    },
    "last_point": {
        "ts": "2026-09-06T23:52:23+00:00",
        "lat": 31.521809999999998552766555803827941417694091796875,
        "lon": 32.30763830000000069730958784930408000946044921875
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 6, 2026 16:12 UTC 75.0%
  • Duration: 6h 33m
  • Radius: 29 meters
  • Data Points: 32 AIS positions
  • Centroid: 31.5215, 32.3074
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 28.89999999999999857891452847979962825775146484375,
    "duration_minutes": 393.3999999999999772626324556767940521240234375,
    "points": 32,
    "centroid": {
        "lat": 31.521501565624998164594217087142169475555419921875,
        "lon": 32.30742593749999969077180139720439910888671875
    },
    "bbox": {
        "min_lat": 31.521343300000001619309841771610081195831298828125,
        "min_lon": 32.30727999999999866531652514822781085968017578125,
        "max_lat": 31.521691700000001645776137593202292919158935546875,
        "max_lon": 32.30763329999999911024133325554430484771728515625
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 6, 2026 16:12 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 33m
  • Data Points: 32 AIS positions
  • Period: 2026-09-06T16:54:59+00:00 to 2026-09-06T23:28:26+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 393.3999999999999772626324556767940521240234375,
    "points_in_zone": 32,
    "first_point": {
        "ts": "2026-09-06T16:54:59+00:00",
        "lat": 31.521364999999999412239048979245126247406005859375,
        "lon": 32.3073600000000027421265258453786373138427734375
    },
    "last_point": {
        "ts": "2026-09-06T23:28:26+00:00",
        "lat": 31.52165000000000105728759081102907657623291015625,
        "lon": 32.3075333000000028960130293853580951690673828125
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 6, 2026 15:00 UTC 75.0%
  • Duration: 6h 31m
  • Radius: 31 meters
  • Data Points: 37 AIS positions
  • Centroid: 31.5215, 32.3074
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 30.5,
    "duration_minutes": 391.5,
    "points": 37,
    "centroid": {
        "lat": 31.521482748648654848011574358679354190826416015625,
        "lon": 32.3074248162162120934226550161838531494140625
    },
    "bbox": {
        "min_lat": 31.521343300000001619309841771610081195831298828125,
        "min_lon": 32.30727999999999866531652514822781085968017578125,
        "max_lat": 31.521691700000001645776137593202292919158935546875,
        "max_lon": 32.30763329999999911024133325554430484771728515625
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 6, 2026 15:00 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 31m
  • Data Points: 37 AIS positions
  • Period: 2026-09-06T15:53:56+00:00 to 2026-09-06T22:25:27+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 391.5,
    "points_in_zone": 37,
    "first_point": {
        "ts": "2026-09-06T15:53:56+00:00",
        "lat": 31.5214399999999983492671162821352481842041015625,
        "lon": 32.30742330000000350764821632765233516693115234375
    },
    "last_point": {
        "ts": "2026-09-06T22:25:27+00:00",
        "lat": 31.5214832999999998719431459903717041015625,
        "lon": 32.30738000000000198497218661941587924957275390625
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 6, 2026 14:04 UTC 75.0%
  • Duration: 6h 30m
  • Radius: 33 meters
  • Data Points: 36 AIS positions
  • Centroid: 31.5215, 32.3074
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 32.7000000000000028421709430404007434844970703125,
    "duration_minutes": 390.1000000000000227373675443232059478759765625,
    "points": 36,
    "centroid": {
        "lat": 31.521452280555561031860634102486073970794677734375,
        "lon": 32.3074318916666669565529446117579936981201171875
    },
    "bbox": {
        "min_lat": 31.521343300000001619309841771610081195831298828125,
        "min_lon": 32.30728169999999721540007158182561397552490234375,
        "max_lat": 31.521691700000001645776137593202292919158935546875,
        "max_lon": 32.30763329999999911024133325554430484771728515625
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 6, 2026 14:04 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 36 AIS positions
  • Period: 2026-09-06T14:35:57+00:00 to 2026-09-06T21:06:05+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 390.1000000000000227373675443232059478759765625,
    "points_in_zone": 36,
    "first_point": {
        "ts": "2026-09-06T14:35:57+00:00",
        "lat": 31.52138169999999917081368039362132549285888671875,
        "lon": 32.3073600000000027421265258453786373138427734375
    },
    "last_point": {
        "ts": "2026-09-06T21:06:05+00:00",
        "lat": 31.5214050000000014506440493278205394744873046875,
        "lon": 32.30728169999999721540007158182561397552490234375
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 6, 2026 13:01 UTC 75.0%
  • Duration: 6h 30m
  • Radius: 33 meters
  • Data Points: 45 AIS positions
  • Centroid: 31.5214, 32.3074
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 33,
    "duration_minutes": 390.1000000000000227373675443232059478759765625,
    "points": 45,
    "centroid": {
        "lat": 31.521448379999998934408722561784088611602783203125,
        "lon": 32.30743277111111666499709826894104480743408203125
    },
    "bbox": {
        "min_lat": 31.521343300000001619309841771610081195831298828125,
        "min_lon": 32.30731829999999860092430026270449161529541015625,
        "max_lat": 31.521691700000001645776137593202292919158935546875,
        "max_lon": 32.30763329999999911024133325554430484771728515625
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 6, 2026 13:01 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 45 AIS positions
  • Period: 2026-09-06T13:12:00+00:00 to 2026-09-06T19:42:03+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 390.1000000000000227373675443232059478759765625,
    "points_in_zone": 45,
    "first_point": {
        "ts": "2026-09-06T13:12:00+00:00",
        "lat": 31.521535000000000081854523159563541412353515625,
        "lon": 32.30757330000000138170435093343257904052734375
    },
    "last_point": {
        "ts": "2026-09-06T19:42:03+00:00",
        "lat": 31.5215333000000015317709767259657382965087890625,
        "lon": 32.30747670000000226764313993044197559356689453125
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 6, 2026 12:17 UTC 75.0%
  • Duration: 6h 36m
  • Radius: 32 meters
  • Data Points: 49 AIS positions
  • Centroid: 31.5215, 32.3074
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 32.2999999999999971578290569595992565155029296875,
    "duration_minutes": 396,
    "points": 49,
    "centroid": {
        "lat": 31.521453104081626150900774518959224224090576171875,
        "lon": 32.3074389367346981316586607135832309722900390625
    },
    "bbox": {
        "min_lat": 31.521343300000001619309841771610081195831298828125,
        "min_lon": 32.30731829999999860092430026270449161529541015625,
        "max_lat": 31.521691700000001645776137593202292919158935546875,
        "max_lon": 32.30763329999999911024133325554430484771728515625
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 6, 2026 12:17 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 49 AIS positions
  • Period: 2026-09-06T12:41:59+00:00 to 2026-09-06T19:18:01+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 396,
    "points_in_zone": 49,
    "first_point": {
        "ts": "2026-09-06T12:41:59+00:00",
        "lat": 31.52150999999999925194060779176652431488037109375,
        "lon": 32.307535000000001446096575818955898284912109375
    },
    "last_point": {
        "ts": "2026-09-06T19:18:01+00:00",
        "lat": 31.521691700000001645776137593202292919158935546875,
        "lon": 32.30763329999999911024133325554430484771728515625
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 6, 2026 10:12 UTC 75.0%
  • Duration: 6h 37m
  • Radius: 87 meters
  • Data Points: 42 AIS positions
  • Centroid: 31.5215, 32.3074
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 87,
    "duration_minutes": 397,
    "points": 42,
    "centroid": {
        "lat": 31.521452583333331887160966289229691028594970703125,
        "lon": 32.3074409833333362485063844360411167144775390625
    },
    "bbox": {
        "min_lat": 31.521351700000000306545189232565462589263916015625,
        "min_lon": 32.30732830000000177506080945022404193878173828125,
        "max_lat": 31.5221149999999994406607584096491336822509765625,
        "max_lon": 32.3079316999999974768797983415424823760986328125
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 6, 2026 10:12 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 37m
  • Data Points: 42 AIS positions
  • Period: 2026-09-06T10:53:01+00:00 to 2026-09-06T17:29:59+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 397,
    "points_in_zone": 42,
    "first_point": {
        "ts": "2026-09-06T10:53:01+00:00",
        "lat": 31.5221149999999994406607584096491336822509765625,
        "lon": 32.3079316999999974768797983415424823760986328125
    },
    "last_point": {
        "ts": "2026-09-06T17:29:59+00:00",
        "lat": 31.52151669999999938909240881912410259246826171875,
        "lon": 32.30754999999999910187398199923336505889892578125
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 6, 2026 09:11 UTC 75.0%
  • Duration: 6h 30m
  • Radius: 79 meters
  • Data Points: 40 AIS positions
  • Centroid: 31.5215, 32.3075
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 79,
    "duration_minutes": 390.8999999999999772626324556767940521240234375,
    "points": 40,
    "centroid": {
        "lat": 31.52153762750000254300175583921372890472412109375,
        "lon": 32.30750744999999568562998319976031780242919921875
    },
    "bbox": {
        "min_lat": 31.521351700000000306545189232565462589263916015625,
        "min_lon": 32.30732830000000177506080945022404193878173828125,
        "max_lat": 31.522136700000000786303644417785108089447021484375,
        "max_lon": 32.3079733000000004494722816161811351776123046875
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 6, 2026 09:11 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 40 AIS positions
  • Period: 2026-09-06T09:53:03+00:00 to 2026-09-06T16:24:00+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 390.8999999999999772626324556767940521240234375,
    "points_in_zone": 40,
    "first_point": {
        "ts": "2026-09-06T09:53:03+00:00",
        "lat": 31.522103300000001269154381589032709598541259765625,
        "lon": 32.3079699999999974124875734560191631317138671875
    },
    "last_point": {
        "ts": "2026-09-06T16:24:00+00:00",
        "lat": 31.521403299999999347846824093721807003021240234375,
        "lon": 32.30742330000000350764821632765233516693115234375
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 6, 2026 08:11 UTC 75.0%
  • Duration: 6h 30m
  • Radius: 81 meters
  • Data Points: 35 AIS positions
  • Centroid: 31.5216, 32.3076
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 81.2999999999999971578290569595992565155029296875,
    "duration_minutes": 390.8999999999999772626324556767940521240234375,
    "points": 35,
    "centroid": {
        "lat": 31.521624428571438869539633742533624172210693359375,
        "lon": 32.30756942285714927720619016326963901519775390625
    },
    "bbox": {
        "min_lat": 31.521351700000000306545189232565462589263916015625,
        "min_lon": 32.30732830000000177506080945022404193878173828125,
        "max_lat": 31.5222432999999995217876858077943325042724609375,
        "max_lon": 32.30802829999999659094100934453308582305908203125
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 6, 2026 08:11 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 35 AIS positions
  • Period: 2026-09-06T08:53:02+00:00 to 2026-09-06T15:23:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 390.8999999999999772626324556767940521240234375,
    "points_in_zone": 35,
    "first_point": {
        "ts": "2026-09-06T08:53:02+00:00",
        "lat": 31.5222432999999995217876858077943325042724609375,
        "lon": 32.30802829999999659094100934453308582305908203125
    },
    "last_point": {
        "ts": "2026-09-06T15:23:56+00:00",
        "lat": 31.521376700000001136459104600362479686737060546875,
        "lon": 32.30736499999999722376742283813655376434326171875
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 6, 2026 07:26 UTC 75.0%
  • Duration: 6h 30m
  • Radius: 91 meters
  • Data Points: 32 AIS positions
  • Centroid: 31.5218, 32.3077
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 91.400000000000005684341886080801486968994140625,
    "duration_minutes": 390,
    "points": 32,
    "centroid": {
        "lat": 31.521771765625004491084837354719638824462890625,
        "lon": 32.30767186562500370428097085095942020416259765625
    },
    "bbox": {
        "min_lat": 31.5213667000000015150362742133438587188720703125,
        "min_lon": 32.3073600000000027421265258453786373138427734375,
        "max_lat": 31.522491699999999781311998958699405193328857421875,
        "max_lon": 32.30814000000000163481672643683850765228271484375
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 6, 2026 07:26 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 32 AIS positions
  • Period: 2026-09-06T07:59:59+00:00 to 2026-09-06T14:29:57+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 32,
    "first_point": {
        "ts": "2026-09-06T07:59:59+00:00",
        "lat": 31.522491699999999781311998958699405193328857421875,
        "lon": 32.30814000000000163481672643683850765228271484375
    },
    "last_point": {
        "ts": "2026-09-06T14:29:57+00:00",
        "lat": 31.52139329999999972642399370670318603515625,
        "lon": 32.30738170000000053505573305301368236541748046875
    }
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 6, 2026 01:50 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 27m
  • Data Points: 6 AIS positions
  • Period: 2026-09-06T01:50:06+00:00 to 2026-09-06T08:18:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 387.8999999999999772626324556767940521240234375,
    "points_in_zone": 6,
    "first_point": {
        "ts": "2026-09-06T01:50:06+00:00",
        "lat": 31.521944999999998771045284229330718517303466796875,
        "lon": 32.30788170000000292247932520695030689239501953125
    },
    "last_point": {
        "ts": "2026-09-06T08:18:02+00:00",
        "lat": 31.522220000000000794670995674096047878265380859375,
        "lon": 32.30801999999999907231540419161319732666015625
    }
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 6, 2026 00:32 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 1h 17m
  • Data Points: 2 AIS positions
  • Period: 2026-09-06T00:32:10+00:00 to 2026-09-06T01:50:06+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 77.900000000000005684341886080801486968994140625,
    "points_in_zone": 2,
    "first_point": {
        "ts": "2026-09-06T00:32:10+00:00",
        "lat": 31.521691700000001645776137593202292919158935546875,
        "lon": 32.30769500000000249428921961225569248199462890625
    },
    "last_point": {
        "ts": "2026-09-06T01:50:06+00:00",
        "lat": 31.521944999999998771045284229330718517303466796875,
        "lon": 32.30788170000000292247932520695030689239501953125
    }
}

Methodology: 2026.01.18

Sts🛰️✗ Eastern Black Sea Surveillance Zone Sep 5, 2026 20:02 UTC 95/100
Vessel A: SPHERE (SPHERE) RUSSIA
Vessel B: FLORA 1 (YENISEI) RUSSIA
  • Minimum Distance: 34 meters
  • Average Distance: 36 meters
  • Duration: 4h 30m
  • Period: 2026-09-05T20:02:07+00:00 to 2026-09-06T00:32:10+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Black Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (SPHERE and YENISEI) maintained close proximity (min 34m, avg 36m) for 270 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 34m, avg 36m
Duration25/25Duration 270 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Black Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-09-06T03:00:01.591280+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273122220,
        "imo": 9323974,
        "name": "SPHERE",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273120320,
        "imo": 9307815,
        "name": "YENISEI",
        "flag": "RUSSIA"
    },
    "min_distance_m": 33.7000000000000028421709430404007434844970703125,
    "avg_distance_m": 36.2999999999999971578290569595992565155029296875,
    "distance_consistency_m": 2,
    "duration_minutes": 270.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 16203,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-05T20:02:07+00:00",
        "end": "2026-09-06T00:32:10+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 34m, avg 36m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 270 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (SPHERE and YENISEI) maintained close proximity (min 34m, avg 36m) for 270 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.52184919999999834772097528912127017974853515625,
            "lon": 32.30766959999999698993633501231670379638671875
        },
        "time_window": {
            "start_ts": "2026-09-05T20:02:07+00:00",
            "end_ts": "2026-09-06T00:32:10+00:00"
        },
        "searched_at": "2026-09-06T03:00:01.591280+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 5, 2026 20:02 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 5h 48m
  • Data Points: 7 AIS positions
  • Period: 2026-09-05T20:02:07+00:00 to 2026-09-06T01:50:06+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 348,
    "points_in_zone": 7,
    "first_point": {
        "ts": "2026-09-05T20:02:07+00:00",
        "lat": 31.521628299999999711644704802893102169036865234375,
        "lon": 32.30755169999999765195752843283116817474365234375
    },
    "last_point": {
        "ts": "2026-09-06T01:50:06+00:00",
        "lat": 31.521944999999998771045284229330718517303466796875,
        "lon": 32.30788170000000292247932520695030689239501953125
    }
}

Methodology: 2026.01.18

Sts🛰️✗ Eastern Black Sea Surveillance Zone Sep 5, 2026 19:02 UTC 95/100
Vessel A: SPHERE (SPHERE) RUSSIA
Vessel B: FLORA 1 (YENISEI) RUSSIA
  • Minimum Distance: 31 meters
  • Average Distance: 36 meters
  • Duration: 5h 30m
  • Period: 2026-09-05T19:02:05+00:00 to 2026-09-06T00:32:10+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Black Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (SPHERE and YENISEI) maintained close proximity (min 31m, avg 36m) for 330 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 31m, avg 36m
Duration25/25Duration 330 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Black Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-09-06T01:45:12.713564+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273122220,
        "imo": 9323974,
        "name": "SPHERE",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273120320,
        "imo": 9307815,
        "name": "YENISEI",
        "flag": "RUSSIA"
    },
    "min_distance_m": 31.39999999999999857891452847979962825775146484375,
    "avg_distance_m": 35.7000000000000028421709430404007434844970703125,
    "distance_consistency_m": 2.5,
    "duration_minutes": 330.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 19805,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-05T19:02:05+00:00",
        "end": "2026-09-06T00:32:10+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 31m, avg 36m"
            },
            "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": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (SPHERE and YENISEI) maintained close proximity (min 31m, avg 36m) for 330 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.52177830000000113841451820917427539825439453125,
            "lon": 32.30760970000000043000909499824047088623046875
        },
        "time_window": {
            "start_ts": "2026-09-05T19:02:05+00:00",
            "end_ts": "2026-09-06T00:32:10+00:00"
        },
        "searched_at": "2026-09-06T01:45:12.713564+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 5, 2026 19:02 UTC 75.0%
  • Duration: 6h 9m
  • Radius: 39 meters
  • Data Points: 10 AIS positions
  • Centroid: 31.5217, 32.3076
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 39.10000000000000142108547152020037174224853515625,
    "duration_minutes": 369,
    "points": 10,
    "centroid": {
        "lat": 31.52166767000000646703483653254806995391845703125,
        "lon": 32.3076271700000035025368561036884784698486328125
    },
    "bbox": {
        "min_lat": 31.52152170000000097616066341288387775421142578125,
        "min_lon": 32.3074433000000027504938771016895771026611328125,
        "max_lat": 31.521944999999998771045284229330718517303466796875,
        "max_lon": 32.30788170000000292247932520695030689239501953125
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 5, 2026 19:02 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 9m
  • Data Points: 10 AIS positions
  • Period: 2026-09-05T19:41:08+00:00 to 2026-09-06T01:50:06+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 369,
    "points_in_zone": 10,
    "first_point": {
        "ts": "2026-09-05T19:41:08+00:00",
        "lat": 31.5215299999999984947862685658037662506103515625,
        "lon": 32.3074433000000027504938771016895771026611328125
    },
    "last_point": {
        "ts": "2026-09-06T01:50:06+00:00",
        "lat": 31.521944999999998771045284229330718517303466796875,
        "lon": 32.30788170000000292247932520695030689239501953125
    }
}

Methodology: 2026.01.18

Sts Eastern Black Sea Surveillance Zone Sep 5, 2026 18:38 UTC 95/100
Vessel A: SPHERE (SPHERE) RUSSIA
Vessel B: FLORA 1 (YENISEI) RUSSIA
  • Minimum Distance: 31 meters
  • Average Distance: 36 meters
  • Duration: 5h 37m
  • Period: 2026-09-05T18:55:11+00:00 to 2026-09-06T00:32:10+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Black Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (SPHERE and YENISEI) maintained close proximity (min 31m, avg 36m) for 337 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 31m, avg 36m
Duration25/25Duration 337 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273122220,
        "imo": 9323974,
        "name": "SPHERE",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273120320,
        "imo": 9307815,
        "name": "YENISEI",
        "flag": "RUSSIA"
    },
    "min_distance_m": 31.39999999999999857891452847979962825775146484375,
    "avg_distance_m": 36,
    "distance_consistency_m": 2.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 337,
    "overlap_duration_s": 20219,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-05T18:55:11+00:00",
        "end": "2026-09-06T00:32:10+00:00"
    },
    "points_count": {
        "vessel_a": 14,
        "vessel_b": 14
    },
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 31m, avg 36m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 337 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (SPHERE and YENISEI) maintained close proximity (min 31m, avg 36m) for 337 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 5, 2026 18:26 UTC 75.0%
  • Duration: 6h 6m
  • Radius: 30 meters
  • Data Points: 16 AIS positions
  • Centroid: 31.5216, 32.3076
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 30,
    "duration_minutes": 366.1000000000000227373675443232059478759765625,
    "points": 16,
    "centroid": {
        "lat": 31.52158635624999760693754069507122039794921875,
        "lon": 32.30756364999999874498826102353632450103759765625
    },
    "bbox": {
        "min_lat": 31.521378299999998517932908725924789905548095703125,
        "min_lon": 32.3073617000000012922100722789764404296875,
        "max_lat": 31.521736700000001718535713735036551952362060546875,
        "max_lon": 32.30772499999999780584403197281062602996826171875
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 5, 2026 18:26 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 6m
  • Data Points: 16 AIS positions
  • Period: 2026-09-05T18:26:07+00:00 to 2026-09-06T00:32:10+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 366.1000000000000227373675443232059478759765625,
    "points_in_zone": 16,
    "first_point": {
        "ts": "2026-09-05T18:26:07+00:00",
        "lat": 31.521378299999998517932908725924789905548095703125,
        "lon": 32.3073617000000012922100722789764404296875
    },
    "last_point": {
        "ts": "2026-09-06T00:32:10+00:00",
        "lat": 31.521691700000001645776137593202292919158935546875,
        "lon": 32.30769500000000249428921961225569248199462890625
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 5, 2026 17:05 UTC 75.0%
  • Duration: 3h 21m
  • Radius: 33 meters
  • Data Points: 22 AIS positions
  • Centroid: 31.5215, 32.3075
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 32.7000000000000028421709430404007434844970703125,
    "duration_minutes": 201.099999999999994315658113919198513031005859375,
    "points": 22,
    "centroid": {
        "lat": 31.521511972727271455596564919687807559967041015625,
        "lon": 32.307500231818181646303855814039707183837890625
    },
    "bbox": {
        "min_lat": 31.521333299999998445173332584090530872344970703125,
        "min_lon": 32.30733670000000046229615691117942333221435546875,
        "max_lat": 31.521736700000001718535713735036551952362060546875,
        "max_lon": 32.30772499999999780584403197281062602996826171875
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 5, 2026 17:05 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 3h 21m
  • Data Points: 22 AIS positions
  • Period: 2026-09-05T17:05:04+00:00 to 2026-09-05T20:26:08+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 201.099999999999994315658113919198513031005859375,
    "points_in_zone": 22,
    "first_point": {
        "ts": "2026-09-05T17:05:04+00:00",
        "lat": 31.521333299999998445173332584090530872344970703125,
        "lon": 32.30733670000000046229615691117942333221435546875
    },
    "last_point": {
        "ts": "2026-09-05T20:26:08+00:00",
        "lat": 31.521718299999999857163857086561620235443115234375,
        "lon": 32.30772499999999780584403197281062602996826171875
    }
}

Methodology: 2026.01.18

Sts Eastern Black Sea Surveillance Zone Sep 5, 2026 17:05 UTC 80/100
Vessel A: SPHERE (SPHERE) RUSSIA
Vessel B: FLORA 1 (YENISEI) RUSSIA
  • Minimum Distance: 39 meters
  • Average Distance: 41 meters
  • Duration: 51 minutes
  • Period: 2026-09-05T17:05:04+00:00 to 2026-09-05T17:56:05+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Black Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (SPHERE and YENISEI) maintained close proximity (min 39m, avg 41m) for 51 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 39m, avg 41m
Duration10/25Duration 51 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273122220,
        "imo": 9323974,
        "name": "SPHERE",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273120320,
        "imo": 9307815,
        "name": "YENISEI",
        "flag": "RUSSIA"
    },
    "min_distance_m": 39.2000000000000028421709430404007434844970703125,
    "avg_distance_m": 41.2000000000000028421709430404007434844970703125,
    "distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 51,
    "overlap_duration_s": 3061,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T17:05:04+00:00",
        "end": "2026-09-05T17:56:05+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 39m, avg 41m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 51 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (SPHERE and YENISEI) maintained close proximity (min 39m, avg 41m) for 51 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 5, 2026 16:02 UTC 75.0%
  • Duration: 4h 24m
  • Radius: 53 meters
  • Data Points: 27 AIS positions
  • Centroid: 31.5215, 32.3074
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 53.2000000000000028421709430404007434844970703125,
    "duration_minutes": 264.1000000000000227373675443232059478759765625,
    "points": 27,
    "centroid": {
        "lat": 31.521455496296294285230032983236014842987060546875,
        "lon": 32.3074389555555541164721944369375705718994140625
    },
    "bbox": {
        "min_lat": 31.52111000000000018417267710901796817779541015625,
        "min_lon": 32.30704999999999671445038984529674053192138671875,
        "max_lat": 31.521736700000001718535713735036551952362060546875,
        "max_lon": 32.30772499999999780584403197281062602996826171875
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 5, 2026 16:02 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 4h 24m
  • Data Points: 27 AIS positions
  • Period: 2026-09-05T16:02:05+00:00 to 2026-09-05T20:26:08+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 264.1000000000000227373675443232059478759765625,
    "points_in_zone": 27,
    "first_point": {
        "ts": "2026-09-05T16:02:05+00:00",
        "lat": 31.52111000000000018417267710901796817779541015625,
        "lon": 32.30704999999999671445038984529674053192138671875
    },
    "last_point": {
        "ts": "2026-09-05T20:26:08+00:00",
        "lat": 31.521718299999999857163857086561620235443115234375,
        "lon": 32.30772499999999780584403197281062602996826171875
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 5, 2026 15:40 UTC 75.0%
  • Duration: 4h 46m
  • Radius: 49 meters
  • Data Points: 32 AIS positions
  • Centroid: 31.5214, 32.3074
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 49.2999999999999971578290569595992565155029296875,
    "duration_minutes": 286.1000000000000227373675443232059478759765625,
    "points": 32,
    "centroid": {
        "lat": 31.5214041156250033282049116678535938262939453125,
        "lon": 32.30737906875000220452420762740075588226318359375
    },
    "bbox": {
        "min_lat": 31.521101699999999112833393155597150325775146484375,
        "min_lon": 32.30704329999999657729858881793916225433349609375,
        "max_lat": 31.521736700000001718535713735036551952362060546875,
        "max_lon": 32.30772499999999780584403197281062602996826171875
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 5, 2026 15:40 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 4h 46m
  • Data Points: 32 AIS positions
  • Period: 2026-09-05T15:40:04+00:00 to 2026-09-05T20:26:08+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 286.1000000000000227373675443232059478759765625,
    "points_in_zone": 32,
    "first_point": {
        "ts": "2026-09-05T15:40:04+00:00",
        "lat": 31.521101699999999112833393155597150325775146484375,
        "lon": 32.3070450000000022328094928525388240814208984375
    },
    "last_point": {
        "ts": "2026-09-05T20:26:08+00:00",
        "lat": 31.521718299999999857163857086561620235443115234375,
        "lon": 32.30772499999999780584403197281062602996826171875
    }
}

Methodology: 2026.01.18

Sts🛰️✗ Eastern Black Sea Surveillance Zone Sep 5, 2026 15:40 UTC 75/100
Vessel A: SPHERE (SPHERE) RUSSIA
Vessel B: FLORA 1 (YENISEI) RUSSIA
  • Minimum Distance: 33 meters
  • Average Distance: 37 meters
  • Duration: 37 minutes
  • Period: 2026-09-05T15:40:04+00:00 to 2026-09-05T16:17:05+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Black Sea Surveillance Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (SPHERE and YENISEI) maintained close proximity (min 33m, avg 37m) for 37 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 33m, avg 37m
Duration5/25Duration 37 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Black Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-09-05T16:45:02.084502+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273122220,
        "imo": 9323974,
        "name": "SPHERE",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273120320,
        "imo": 9307815,
        "name": "YENISEI",
        "flag": "RUSSIA"
    },
    "min_distance_m": 32.7000000000000028421709430404007434844970703125,
    "avg_distance_m": 37,
    "distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 37,
    "overlap_duration_s": 2221,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T15:40:04+00:00",
        "end": "2026-09-05T16:17:05+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 33m, avg 37m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 37 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SPHERE and YENISEI) maintained close proximity (min 33m, avg 37m) for 37 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.521288999999999447254594997502863407135009765625,
            "lon": 32.30713490000000120971890282817184925079345703125
        },
        "time_window": {
            "start_ts": "2026-09-05T15:40:04+00:00",
            "end_ts": "2026-09-05T16:17:05+00:00"
        },
        "searched_at": "2026-09-05T16:45:02.084502+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 5, 2026 14:19 UTC 75.0%
  • Duration: 6h 7m
  • Radius: 50 meters
  • Data Points: 33 AIS positions
  • Centroid: 31.5214, 32.3074
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 50.10000000000000142108547152020037174224853515625,
    "duration_minutes": 367,
    "points": 33,
    "centroid": {
        "lat": 31.5213984363636399166352930478751659393310546875,
        "lon": 32.3073734393939275832963176071643829345703125
    },
    "bbox": {
        "min_lat": 31.521101699999999112833393155597150325775146484375,
        "min_lon": 32.30704329999999657729858881793916225433349609375,
        "max_lat": 31.521736700000001718535713735036551952362060546875,
        "max_lon": 32.30772499999999780584403197281062602996826171875
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 5, 2026 14:19 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 7m
  • Data Points: 33 AIS positions
  • Period: 2026-09-05T14:19:06+00:00 to 2026-09-05T20:26:08+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 367,
    "points_in_zone": 33,
    "first_point": {
        "ts": "2026-09-05T14:19:06+00:00",
        "lat": 31.521216700000000088266460807062685489654541015625,
        "lon": 32.30719330000000155678208102472126483917236328125
    },
    "last_point": {
        "ts": "2026-09-05T20:26:08+00:00",
        "lat": 31.521718299999999857163857086561620235443115234375,
        "lon": 32.30772499999999780584403197281062602996826171875
    }
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 5, 2026 02:16 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 1h 47m
  • Data Points: 14 AIS positions
  • Period: 2026-09-05T02:16:17+00:00 to 2026-09-05T04:03:24+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 107.099999999999994315658113919198513031005859375,
    "points_in_zone": 14,
    "first_point": {
        "ts": "2026-09-05T02:16:17+00:00",
        "lat": 31.526971700000000708996594767086207866668701171875,
        "lon": 32.2978532999999998764906194992363452911376953125
    },
    "last_point": {
        "ts": "2026-09-05T04:03:24+00:00",
        "lat": 31.5422200000000003683453542180359363555908203125,
        "lon": 32.26789169999999984383975970558822154998779296875
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 5, 2026 01:04 UTC 75.0%
  • Duration: 1h 44m
  • Radius: 1,092 meters
  • Data Points: 12 AIS positions
  • Centroid: 31.5283, 32.2936
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 1091.59999999999990905052982270717620849609375,
    "duration_minutes": 104.599999999999994315658113919198513031005859375,
    "points": 12,
    "centroid": {
        "lat": 31.528279458333333451491853338666260242462158203125,
        "lon": 32.29363500000000186673787538893520832061767578125
    },
    "bbox": {
        "min_lat": 31.52691829999999839628799236379563808441162109375,
        "min_lon": 32.28255329999999645451680407859385013580322265625,
        "max_lat": 31.530891700000001520720616099424660205841064453125,
        "max_lon": 32.297910000000001673470251262187957763671875
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Source snapshot

SanctionerAs ofEntity ID
🇬🇧 UK2025-09-299323974

We mirror official lists; always verify at the source.

Sanctioned on the same day

  • AKAR WEST · IMO 9258167 🇦🇺 AU🇪🇺 EU🇳🇿 NZ🇬🇧 UK
  • ATLANTICOS · IMO 9282986 🇦🇺 AU🇪🇺 EU🇳🇿 NZ🇬🇧 UK
  • BELOMOR · IMO 9384435 🇦🇺 AU🇪🇺 EU🇳🇿 NZ🇬🇧 UK
  • Blue · IMO 9236353 🇦🇺 AU🇪🇺 EU🇳🇿 NZ🇬🇧 UK
  • Blue Talu · IMO 9334557 🇦🇺 AU🇪🇺 EU🇬🇧 UK
  • C VIKING · IMO 9261657 🇦🇺 AU🇪🇺 EU🇳🇿 NZ🇬🇧 UK
  • CAVELA · IMO 9259733 🇦🇺 AU🇪🇺 EU🇬🇧 UK
  • CELERIX · IMO 9222560 🇦🇺 AU🇪🇺 EU🇬🇧 UK