CYCLONE

IMO 9314167

Vessel information

Vessel Name CYCLONE View name history 📜
IMO Number 9314167
MMSI 655910000
Vessel Type Oil Tanker
Flag 🇷🇺 Russia View flag history 📜
Call Sign 7QA112
Gross Tonnage 42,684 GT
Year Built 2007

Sanctioned by

🇪🇺 EU 2025-05-06🇬🇧 UK 2024-11-25

Company & Ownership

🏢
Atbara Maritime Corp
IMO Company: 6466002
Address 1st Floor, Dekk House, Zippora Street, Providence Industrial Estate, Victoria, Mahe Island, Seychelles.
Status Active
Fleet 1.0 owner, 1.0 operator, 1.0 manager, 0.0 beneficial

Management & Operations

ISM Manager
SHE RAY SHIPS CO LTD
Room 502b, Unit 2, Building 140, 8, Minjiang Silu, Shinan Qu, Qingdao, Shandong, 266000, China.
Commercial Manager
SHE RAY SHIPS CO LTD
1st Floor, Dekk House, Zippora Street, Providence Industrial Estate, Victoria, Mahe Island, Seychelles.
Registered Owner
ATBARA MARITIME CORP
Room 1801, Easey Commercial Building, 253-261, Hennessy Road, Wan Chai, Hong Kong, China.

Classification & Safety

Current Classification
Russian Maritime Register of Shipping Delivered

Port State Control (PSC) Inspections

⚠️
Risk Level
LOW
Last 36 Months
10
Inspections
1
Detentions
Last Inspection
📍 El Dekheila
📅 2026-09-22

Survey Renewal & Certificates

Code Type Issuer Issued Expires
503 Cargo Ship Safety Radio BV 21/03/2022 25/11/2026
505 International Oil Pollution Prevention (IOPP) BV 28/03/2022 25/11/2026

Programs & Notes

SEMA (Canada) — vessel designations | The Russia (Sanctions) (EU Exit) Regulations 2019 | Added in EU Sanctions Package 17 | (Council Decision (CFSP) 2025/931, Annex XVI to Decision 2014/512/CFSP) | Press Release | Official Journal

DateOfListing: 2025-05-21 || DateDesignated: 2024-11-25 | 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 9314167 (“AGNES”) 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, AGNES is involved in carrying oil or oil products that originated in Russia from Russia to a third country.

Vessel Changes

13 changes

AIS Events

50 events detected • 3 zones • Last: Oct 21, 2026

Zone Dwell Ceuta/Gibraltar STS Zone Oct 21, 2026 22:08 UTC 80.0%
  • Zone: Ceuta/Gibraltar STS Zone
  • Duration: 1h 20m
  • Data Points: 25 AIS positions
  • Period: 2026-10-21T22:08:43+00:00 to 2026-10-21T23:29:03+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_ceuta",
    "zone_name": "Ceuta\/Gibraltar STS Zone",
    "dwell_minutes": 80.2999999999999971578290569595992565155029296875,
    "points_in_zone": 25,
    "first_point": {
        "ts": "2026-10-21T22:08:43+00:00",
        "lat": 36.01744500000000215322870644740760326385498046875,
        "lon": -5.33898829999999957607315081986598670482635498046875
    },
    "last_point": {
        "ts": "2026-10-21T23:29:03+00:00",
        "lat": 35.94702670000000210848156712017953395843505859375,
        "lon": -5.6251683000000003431750883464701473712921142578125
    }
}

Methodology: 2026.01.18

Zone Dwell Ceuta/Gibraltar STS Zone Oct 21, 2026 21:52 UTC 80.0%
  • Zone: Ceuta/Gibraltar STS Zone
  • Duration: 1h 36m
  • Data Points: 27 AIS positions
  • Period: 2026-10-21T21:52:53+00:00 to 2026-10-21T23:29:03+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_ceuta",
    "zone_name": "Ceuta\/Gibraltar STS Zone",
    "dwell_minutes": 96.2000000000000028421709430404007434844970703125,
    "points_in_zone": 27,
    "first_point": {
        "ts": "2026-10-21T21:52:53+00:00",
        "lat": 36.021338299999996479527908377349376678466796875,
        "lon": -5.28680669999999963692971505224704742431640625
    },
    "last_point": {
        "ts": "2026-10-21T23:29:03+00:00",
        "lat": 35.94702670000000210848156712017953395843505859375,
        "lon": -5.6251683000000003431750883464701473712921142578125
    }
}

Methodology: 2026.01.18

Zone Dwell Eastern Mediterranean Monitoring Zone Oct 14, 2026 08:41 UTC 80.0%
  • Zone: Eastern Mediterranean Monitoring Zone
  • Duration: 5h 27m
  • Data Points: 5 AIS positions
  • Period: 2026-10-14T08:41:26+00:00 to 2026-10-14T14:08:27+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_161",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "dwell_minutes": 327,
    "points_in_zone": 5,
    "first_point": {
        "ts": "2026-10-14T08:41:26+00:00",
        "lat": 31.533191699999999713099896325729787349700927734375,
        "lon": 32.36208330000000188420017366297543048858642578125
    },
    "last_point": {
        "ts": "2026-10-14T14:08:27+00:00",
        "lat": 31.533003300000000734826244297437369823455810546875,
        "lon": 32.3617449999999990950527717359364032745361328125
    }
}

Methodology: 2026.01.18

Sts Eastern Black Sea Surveillance Zone Sep 17, 2026 14:01 UTC 80/100
Vessel A: CYCLONE (CYCLONE) RUSSIA
Vessel B: SUKHONA (GURU) RUSSIA
  • Minimum Distance: 40 meters
  • Average Distance: 46 meters
  • Duration: 47 minutes
  • Period: 2026-09-17T14:24:02+00:00 to 2026-09-17T15:11:04+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Eastern Black Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (CYCLONE and GURU) maintained close proximity (min 40m, avg 46m) for 47 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Black Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 40m, avg 46m
Duration10/25Duration 47 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±6m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273123620,
        "imo": 9314167,
        "name": "CYCLONE",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273129020,
        "imo": 9353096,
        "name": "GURU",
        "flag": "RUSSIA"
    },
    "min_distance_m": 39.60000000000000142108547152020037174224853515625,
    "avg_distance_m": 46,
    "distance_consistency_m": 6.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 47,
    "overlap_duration_s": 2822,
    "speed_a_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-17T14:24:02+00:00",
        "end": "2026-09-17T15:11:04+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 40m, avg 46m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 47 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b16m"
            },
            "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 (CYCLONE and GURU) maintained close proximity (min 40m, avg 46m) for 47 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Black Sea Surveillance Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 17, 2026 14:00 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 1h 11m
  • Data Points: 6 AIS positions
  • Period: 2026-09-17T14:00:03+00:00 to 2026-09-17T15:11:04+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 71,
    "points_in_zone": 6,
    "first_point": {
        "ts": "2026-09-17T14:00:03+00:00",
        "lat": 31.517276700000000033696778700686991214752197265625,
        "lon": 32.39634170000000068512235884554684162139892578125
    },
    "last_point": {
        "ts": "2026-09-17T15:11:04+00:00",
        "lat": 31.5154500000000012960299500264227390289306640625,
        "lon": 32.39775999999999811507223057560622692108154296875
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 17, 2026 13:00 UTC 75.0%
  • Duration: 2h 11m
  • Radius: 202 meters
  • Data Points: 12 AIS positions
  • Centroid: 31.5170, 32.3966
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 201.599999999999994315658113919198513031005859375,
    "duration_minutes": 131,
    "points": 12,
    "centroid": {
        "lat": 31.516991808333333580094404169358313083648681640625,
        "lon": 32.39663569166666690080091939307749271392822265625
    },
    "bbox": {
        "min_lat": 31.5154500000000012960299500264227390289306640625,
        "min_lon": 32.39634170000000068512235884554684162139892578125,
        "max_lat": 31.51793669999999991659933584742248058319091796875,
        "max_lon": 32.39775999999999811507223057560622692108154296875
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 17, 2026 13:00 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 2h 11m
  • Data Points: 12 AIS positions
  • Period: 2026-09-17T13:00:06+00:00 to 2026-09-17T15:11:04+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 131,
    "points_in_zone": 12,
    "first_point": {
        "ts": "2026-09-17T13:00:06+00:00",
        "lat": 31.51793669999999991659933584742248058319091796875,
        "lon": 32.39659329999999926030795904807746410369873046875
    },
    "last_point": {
        "ts": "2026-09-17T15:11:04+00:00",
        "lat": 31.5154500000000012960299500264227390289306640625,
        "lon": 32.39775999999999811507223057560622692108154296875
    }
}

Methodology: 2026.01.18

Sts🛰️✗ Eastern Black Sea Surveillance Zone Sep 17, 2026 13:00 UTC 95/100
Vessel A: CYCLONE (CYCLONE) RUSSIA
Vessel B: SUKHONA (GURU) RUSSIA
  • Minimum Distance: 39 meters
  • Average Distance: 44 meters
  • Duration: 2h 11m
  • Period: 2026-09-17T13:00:06+00:00 to 2026-09-17T15:11:04+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 (CYCLONE and GURU) maintained close proximity (min 39m, avg 44m) for 131 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 44m
Duration25/25Duration 131 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±4m
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: 2026-09-17T19:30:01.809261+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273123620,
        "imo": 9314167,
        "name": "CYCLONE",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273129020,
        "imo": 9353096,
        "name": "GURU",
        "flag": "RUSSIA"
    },
    "min_distance_m": 39.39999999999999857891452847979962825775146484375,
    "avg_distance_m": 44.2999999999999971578290569595992565155029296875,
    "distance_consistency_m": 4.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 131,
    "overlap_duration_s": 7858,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-17T13:00:06+00:00",
        "end": "2026-09-17T15:11:04+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 39m, avg 44m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 131 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CYCLONE and GURU) maintained close proximity (min 39m, avg 44m) for 131 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": 31.516834100000000518093656864948570728302001953125,
            "lon": 32.39672569999999751644281786866486072540283203125
        },
        "time_window": {
            "start_ts": "2026-09-17T13:00:06+00:00",
            "end_ts": "2026-09-17T15:11:04+00:00"
        },
        "searched_at": "2026-09-17T19:30:01.809261+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Sts Eastern Black Sea Surveillance Zone Sep 17, 2026 12:05 UTC 95/100
Vessel A: CYCLONE (CYCLONE) RUSSIA
Vessel B: SUKHONA (GURU) RUSSIA
  • Minimum Distance: 39 meters
  • Average Distance: 45 meters
  • Duration: 2h 19m
  • Period: 2026-09-17T12:51:09+00:00 to 2026-09-17T15:11:04+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 (CYCLONE and GURU) maintained close proximity (min 39m, avg 45m) for 140 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 45m
Duration25/25Duration 140 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±4m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273123620,
        "imo": 9314167,
        "name": "CYCLONE",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273129020,
        "imo": 9353096,
        "name": "GURU",
        "flag": "RUSSIA"
    },
    "min_distance_m": 39.39999999999999857891452847979962825775146484375,
    "avg_distance_m": 44.60000000000000142108547152020037174224853515625,
    "distance_consistency_m": 4.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 139.900000000000005684341886080801486968994140625,
    "overlap_duration_s": 8395,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-17T12:51:09+00:00",
        "end": "2026-09-17T15:11:04+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 39m, avg 45m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 140 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CYCLONE and GURU) maintained close proximity (min 39m, avg 45m) for 140 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 17, 2026 12:03 UTC 75.0%
  • Duration: 3h 7m
  • Radius: 242 meters
  • Data Points: 18 AIS positions
  • Centroid: 31.5175, 32.3967
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 242,
    "duration_minutes": 187.900000000000005684341886080801486968994140625,
    "points": 18,
    "centroid": {
        "lat": 31.51745083333333496966588427312672138214111328125,
        "lon": 32.396741194444445000044652260839939117431640625
    },
    "bbox": {
        "min_lat": 31.5154500000000012960299500264227390289306640625,
        "min_lon": 32.39634170000000068512235884554684162139892578125,
        "max_lat": 31.518543300000001039506969391368329524993896484375,
        "max_lon": 32.39775999999999811507223057560622692108154296875
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 17, 2026 12:03 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 3h 7m
  • Data Points: 18 AIS positions
  • Period: 2026-09-17T12:03:12+00:00 to 2026-09-17T15:11:04+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 187.900000000000005684341886080801486968994140625,
    "points_in_zone": 18,
    "first_point": {
        "ts": "2026-09-17T12:03:12+00:00",
        "lat": 31.518543300000001039506969391368329524993896484375,
        "lon": 32.3971149999999994406607584096491336822509765625
    },
    "last_point": {
        "ts": "2026-09-17T15:11:04+00:00",
        "lat": 31.5154500000000012960299500264227390289306640625,
        "lon": 32.39775999999999811507223057560622692108154296875
    }
}

Methodology: 2026.01.18

Sts🛰️✗ Eastern Black Sea Surveillance Zone Sep 17, 2026 11:08 UTC 95/100
Vessel A: CYCLONE (CYCLONE) RUSSIA
Vessel B: SUKHONA (GURU) RUSSIA
  • Minimum Distance: 39 meters
  • Average Distance: 46 meters
  • Duration: 4h 2m
  • Period: 2026-09-17T11:08:10+00:00 to 2026-09-17T15:11:04+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 (CYCLONE and GURU) maintained close proximity (min 39m, avg 46m) for 243 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 46m
Duration25/25Duration 243 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±4m
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: 2026-09-17T17:45:16.492941+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273123620,
        "imo": 9314167,
        "name": "CYCLONE",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273129020,
        "imo": 9353096,
        "name": "GURU",
        "flag": "RUSSIA"
    },
    "min_distance_m": 39.39999999999999857891452847979962825775146484375,
    "avg_distance_m": 45.89999999999999857891452847979962825775146484375,
    "distance_consistency_m": 4.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 242.900000000000005684341886080801486968994140625,
    "overlap_duration_s": 14574,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-17T11:08:10+00:00",
        "end": "2026-09-17T15:11:04+00:00"
    },
    "points_count": {
        "vessel_a": 24,
        "vessel_b": 24
    },
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 39m, avg 46m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 243 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CYCLONE and GURU) maintained close proximity (min 39m, avg 46m) for 243 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": 31.517532299999999167994246818125247955322265625,
            "lon": 32.39680210000000215586624108254909515380859375
        },
        "time_window": {
            "start_ts": "2026-09-17T11:08:10+00:00",
            "end_ts": "2026-09-17T15:11:04+00:00"
        },
        "searched_at": "2026-09-17T17:45:16.492941+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 17, 2026 11:01 UTC 75.0%
  • Duration: 4h 9m
  • Radius: 269 meters
  • Data Points: 25 AIS positions
  • Centroid: 31.5177, 32.3968
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 269.1000000000000227373675443232059478759765625,
    "duration_minutes": 249.900000000000005684341886080801486968994140625,
    "points": 25,
    "centroid": {
        "lat": 31.51773359999999257752278936095535755157470703125,
        "lon": 32.39679919199999602597017656080424785614013671875
    },
    "bbox": {
        "min_lat": 31.5154500000000012960299500264227390289306640625,
        "min_lon": 32.39634170000000068512235884554684162139892578125,
        "max_lat": 31.51865670000000108075255411677062511444091796875,
        "max_lon": 32.39775999999999811507223057560622692108154296875
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 17, 2026 11:01 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 4h 9m
  • Data Points: 25 AIS positions
  • Period: 2026-09-17T11:01:10+00:00 to 2026-09-17T15:11:04+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 249.900000000000005684341886080801486968994140625,
    "points_in_zone": 25,
    "first_point": {
        "ts": "2026-09-17T11:01:10+00:00",
        "lat": 31.5182716999999996687620296142995357513427734375,
        "lon": 32.39678500000000127556631923653185367584228515625
    },
    "last_point": {
        "ts": "2026-09-17T15:11:04+00:00",
        "lat": 31.5154500000000012960299500264227390289306640625,
        "lon": 32.39775999999999811507223057560622692108154296875
    }
}

Methodology: 2026.01.18

Sts Eastern Black Sea Surveillance Zone Sep 17, 2026 10:12 UTC 95/100
Vessel A: CYCLONE (CYCLONE) RUSSIA
Vessel B: SUKHONA (GURU) RUSSIA
  • Minimum Distance: 39 meters
  • Average Distance: 46 meters
  • Duration: 4h 26m
  • Period: 2026-09-17T10:44:10+00:00 to 2026-09-17T15:11:04+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 (CYCLONE and GURU) maintained close proximity (min 39m, avg 46m) for 267 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 46m
Duration25/25Duration 267 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±4m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273123620,
        "imo": 9314167,
        "name": "CYCLONE",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273129020,
        "imo": 9353096,
        "name": "GURU",
        "flag": "RUSSIA"
    },
    "min_distance_m": 39.39999999999999857891452847979962825775146484375,
    "avg_distance_m": 45.89999999999999857891452847979962825775146484375,
    "distance_consistency_m": 4.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 266.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 16014,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-17T10:44:10+00:00",
        "end": "2026-09-17T15:11:04+00:00"
    },
    "points_count": {
        "vessel_a": 27,
        "vessel_b": 27
    },
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 39m, avg 46m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 267 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CYCLONE and GURU) maintained close proximity (min 39m, avg 46m) for 267 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 17, 2026 10:07 UTC 75.0%
  • Duration: 5h 3m
  • Radius: 281 meters
  • Data Points: 30 AIS positions
  • Centroid: 31.5178, 32.3968
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 280.6000000000000227373675443232059478759765625,
    "duration_minutes": 303.80000000000001136868377216160297393798828125,
    "points": 30,
    "centroid": {
        "lat": 31.51784383333332328902542940340936183929443359375,
        "lon": 32.3968024933333396120360703207552433013916015625
    },
    "bbox": {
        "min_lat": 31.5154500000000012960299500264227390289306640625,
        "min_lon": 32.39634170000000068512235884554684162139892578125,
        "max_lat": 31.51865670000000108075255411677062511444091796875,
        "max_lon": 32.39775999999999811507223057560622692108154296875
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 17, 2026 10:07 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 5h 3m
  • Data Points: 30 AIS positions
  • Period: 2026-09-17T10:07:14+00:00 to 2026-09-17T15:11:04+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 303.80000000000001136868377216160297393798828125,
    "points_in_zone": 30,
    "first_point": {
        "ts": "2026-09-17T10:07:14+00:00",
        "lat": 31.518473300000000136833477881737053394317626953125,
        "lon": 32.39692170000000004392859409563243389129638671875
    },
    "last_point": {
        "ts": "2026-09-17T15:11:04+00:00",
        "lat": 31.5154500000000012960299500264227390289306640625,
        "lon": 32.39775999999999811507223057560622692108154296875
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 17, 2026 09:12 UTC 75.0%
  • Duration: 5h 58m
  • Radius: 296 meters
  • Data Points: 38 AIS positions
  • Centroid: 31.5180, 32.3969
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 296.1000000000000227373675443232059478759765625,
    "duration_minutes": 358.8999999999999772626324556767940521240234375,
    "points": 38,
    "centroid": {
        "lat": 31.51800671315789514892458100803196430206298828125,
        "lon": 32.3968614394736817985176458023488521575927734375
    },
    "bbox": {
        "min_lat": 31.5154500000000012960299500264227390289306640625,
        "min_lon": 32.39634170000000068512235884554684162139892578125,
        "max_lat": 31.518750000000000710542735760100185871124267578125,
        "max_lon": 32.39775999999999811507223057560622692108154296875
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 17, 2026 09:12 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 5h 58m
  • Data Points: 38 AIS positions
  • Period: 2026-09-17T09:12:12+00:00 to 2026-09-17T15:11:04+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 358.8999999999999772626324556767940521240234375,
    "points_in_zone": 38,
    "first_point": {
        "ts": "2026-09-17T09:12:12+00:00",
        "lat": 31.518750000000000710542735760100185871124267578125,
        "lon": 32.397300000000001318767317570745944976806640625
    },
    "last_point": {
        "ts": "2026-09-17T15:11:04+00:00",
        "lat": 31.5154500000000012960299500264227390289306640625,
        "lon": 32.39775999999999811507223057560622692108154296875
    }
}

Methodology: 2026.01.18

Sts Eastern Black Sea Surveillance Zone Sep 17, 2026 09:05 UTC 95/100
Vessel A: CYCLONE (CYCLONE) RUSSIA
Vessel B: SUKHONA (GURU) RUSSIA
  • Minimum Distance: 39 meters
  • Average Distance: 46 meters
  • Duration: 5h 58m
  • Period: 2026-09-17T09:12:12+00:00 to 2026-09-17T15:11:04+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 (CYCLONE and GURU) maintained close proximity (min 39m, avg 46m) for 359 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 46m
Duration25/25Duration 359 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±4m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273123620,
        "imo": 9314167,
        "name": "CYCLONE",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273129020,
        "imo": 9353096,
        "name": "GURU",
        "flag": "RUSSIA"
    },
    "min_distance_m": 39.39999999999999857891452847979962825775146484375,
    "avg_distance_m": 45.5,
    "distance_consistency_m": 3.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 358.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 21532,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-17T09:12:12+00:00",
        "end": "2026-09-17T15:11:04+00:00"
    },
    "points_count": {
        "vessel_a": 38,
        "vessel_b": 38
    },
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 39m, avg 46m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 359 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CYCLONE and GURU) maintained close proximity (min 39m, avg 46m) for 359 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

Sts Eastern Black Sea Surveillance Zone Sep 17, 2026 08:04 UTC 95/100
Vessel A: CYCLONE (CYCLONE) RUSSIA
Vessel B: SUKHONA (GURU) RUSSIA
  • Minimum Distance: 39 meters
  • Average Distance: 45 meters
  • Duration: 6h 14m
  • Period: 2026-09-17T08:30:16+00:00 to 2026-09-17T14:45:02+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 (CYCLONE and GURU) maintained close proximity (min 39m, avg 45m) for 375 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 45m
Duration25/25Duration 375 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±4m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273123620,
        "imo": 9314167,
        "name": "CYCLONE",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273129020,
        "imo": 9353096,
        "name": "GURU",
        "flag": "RUSSIA"
    },
    "min_distance_m": 39.39999999999999857891452847979962825775146484375,
    "avg_distance_m": 45.2999999999999971578290569595992565155029296875,
    "distance_consistency_m": 3.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 374.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 22486,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-17T08:30:16+00:00",
        "end": "2026-09-17T14:45:02+00:00"
    },
    "points_count": {
        "vessel_a": 40,
        "vessel_b": 40
    },
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 39m, avg 45m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 375 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CYCLONE and GURU) maintained close proximity (min 39m, avg 45m) for 375 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 17, 2026 08:00 UTC 75.0%
  • Duration: 6h 28m
  • Radius: 297 meters
  • Data Points: 39 AIS positions
  • Centroid: 31.5180, 32.3969
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 297.30000000000001136868377216160297393798828125,
    "duration_minutes": 388.80000000000001136868377216160297393798828125,
    "points": 39,
    "centroid": {
        "lat": 31.518019317948716917499041301198303699493408203125,
        "lon": 32.39686665897435347005739458836615085601806640625
    },
    "bbox": {
        "min_lat": 31.5154500000000012960299500264227390289306640625,
        "min_lon": 32.39634170000000068512235884554684162139892578125,
        "max_lat": 31.518750000000000710542735760100185871124267578125,
        "max_lon": 32.39775999999999811507223057560622692108154296875
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 17, 2026 08:00 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 28m
  • Data Points: 39 AIS positions
  • Period: 2026-09-17T08:42:14+00:00 to 2026-09-17T15:11:04+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 388.80000000000001136868377216160297393798828125,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-09-17T08:42:14+00:00",
        "lat": 31.518498300000000966747393249534070491790771484375,
        "lon": 32.3970649999999977808329276740550994873046875
    },
    "last_point": {
        "ts": "2026-09-17T15:11:04+00:00",
        "lat": 31.5154500000000012960299500264227390289306640625,
        "lon": 32.39775999999999811507223057560622692108154296875
    }
}

Methodology: 2026.01.18

Sts Eastern Black Sea Surveillance Zone Sep 17, 2026 07:54 UTC 95/100
Vessel A: CYCLONE (CYCLONE) RUSSIA
Vessel B: SUKHONA (GURU) RUSSIA
  • Minimum Distance: 37 meters
  • Average Distance: 45 meters
  • Duration: 6h 5m
  • Period: 2026-09-17T07:54:16+00:00 to 2026-09-17T14:00:03+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 (CYCLONE and GURU) maintained close proximity (min 37m, avg 45m) for 366 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 37m, avg 45m
Duration25/25Duration 366 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±4m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273123620,
        "imo": 9314167,
        "name": "CYCLONE",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273129020,
        "imo": 9353096,
        "name": "GURU",
        "flag": "RUSSIA"
    },
    "min_distance_m": 37.2999999999999971578290569595992565155029296875,
    "avg_distance_m": 44.89999999999999857891452847979962825775146484375,
    "distance_consistency_m": 3.5,
    "duration_minutes": 365.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 21947,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0,
    "speed_b_std": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-17T07:54:16+00:00",
        "end": "2026-09-17T14:00:03+00:00"
    },
    "points_count": {
        "vessel_a": 41,
        "vessel_b": 41
    },
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 37m, avg 45m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 366 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CYCLONE and GURU) maintained close proximity (min 37m, avg 45m) for 366 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 17, 2026 07:00 UTC 75.0%
  • Duration: 6h 34m
  • Radius: 211 meters
  • Data Points: 43 AIS positions
  • Centroid: 31.5183, 32.3969
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 211.400000000000005684341886080801486968994140625,
    "duration_minutes": 394.80000000000001136868377216160297393798828125,
    "points": 43,
    "centroid": {
        "lat": 31.51827605116278618879732675850391387939453125,
        "lon": 32.39691053953487909211617079563438892364501953125
    },
    "bbox": {
        "min_lat": 31.516400000000000858335624798201024532318115234375,
        "min_lon": 32.39634170000000068512235884554684162139892578125,
        "max_lat": 31.51887669999999985748218023218214511871337890625,
        "max_lon": 32.39760170000000272239049081690609455108642578125
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 17, 2026 07:00 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 34m
  • Data Points: 43 AIS positions
  • Period: 2026-09-17T07:54:16+00:00 to 2026-09-17T14:29:03+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 394.80000000000001136868377216160297393798828125,
    "points_in_zone": 43,
    "first_point": {
        "ts": "2026-09-17T07:54:16+00:00",
        "lat": 31.51882330000000109748725662939250469207763671875,
        "lon": 32.39760170000000272239049081690609455108642578125
    },
    "last_point": {
        "ts": "2026-09-17T14:29:03+00:00",
        "lat": 31.516400000000000858335624798201024532318115234375,
        "lon": 32.39651330000000228892531595192849636077880859375
    }
}

Methodology: 2026.01.18

Sts🛰️✗ Eastern Black Sea Surveillance Zone Sep 17, 2026 06:58 UTC 90/100
Vessel A: SUKHONA (GURU) RUSSIA
Vessel B: CYCLONE (CYCLONE) RUSSIA
  • Minimum Distance: 28 meters
  • Average Distance: 42 meters
  • Duration: 1h 51m
  • Period: 2026-09-17T06:58:35+00:00 to 2026-09-17T08:49:36+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: 90/100

High-confidence STS candidate. Two tankers (GURU and CYCLONE) maintained close proximity (min 28m, avg 42m) for 111 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 28m, avg 42m
Duration20/25Duration 111 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±5m
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: 2026-09-17T09:45:09.627247+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273129020,
        "imo": 9353096,
        "name": "GURU",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273123620,
        "imo": 9314167,
        "name": "CYCLONE",
        "flag": "RUSSIA"
    },
    "min_distance_m": 27.800000000000000710542735760100185871124267578125,
    "avg_distance_m": 41.60000000000000142108547152020037174224853515625,
    "distance_consistency_m": 5.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 111,
    "overlap_duration_s": 6661,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-17T06:58:35+00:00",
        "end": "2026-09-17T08:49:36+00:00"
    },
    "points_count": {
        "vessel_a": 18,
        "vessel_b": 18
    },
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 28m, avg 42m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 111 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (GURU and CYCLONE) maintained close proximity (min 28m, avg 42m) for 111 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": 31.518538199999998283828972489573061466217041015625,
            "lon": 32.3972021000000012236341717652976512908935546875
        },
        "time_window": {
            "start_ts": "2026-09-17T06:58:35+00:00",
            "end_ts": "2026-09-17T08:49:36+00:00"
        },
        "searched_at": "2026-09-17T09:45:09.627247+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 17, 2026 06:54 UTC 75.0%
  • Duration: 6h 32m
  • Radius: 109 meters
  • Data Points: 42 AIS positions
  • Centroid: 31.5185, 32.3970
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 108.599999999999994315658113919198513031005859375,
    "duration_minutes": 392.80000000000001136868377216160297393798828125,
    "points": 42,
    "centroid": {
        "lat": 31.518474364285719246936423587612807750701904296875,
        "lon": 32.39703666190475672692627995274960994720458984375
    },
    "bbox": {
        "min_lat": 31.517610000000001235775926033966243267059326171875,
        "min_lon": 32.39647169999999931633283267728984355926513671875,
        "max_lat": 31.5188883000000004130924935452640056610107421875,
        "max_lon": 32.397823299999998880593921057879924774169921875
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 17, 2026 06:54 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 32m
  • Data Points: 42 AIS positions
  • Period: 2026-09-17T06:54:14+00:00 to 2026-09-17T13:27:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 392.80000000000001136868377216160297393798828125,
    "points_in_zone": 42,
    "first_point": {
        "ts": "2026-09-17T06:54:14+00:00",
        "lat": 31.518788300000000646150510874576866626739501953125,
        "lon": 32.39740330000000056998032960109412670135498046875
    },
    "last_point": {
        "ts": "2026-09-17T13:27:02+00:00",
        "lat": 31.517610000000001235775926033966243267059326171875,
        "lon": 32.39650000000000318323145620524883270263671875
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 17, 2026 05:44 UTC 75.0%
  • Duration: 6h 27m
  • Radius: 73 meters
  • Data Points: 37 AIS positions
  • Centroid: 31.5186, 32.3971
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 72.599999999999994315658113919198513031005859375,
    "duration_minutes": 387.8999999999999772626324556767940521240234375,
    "points": 37,
    "centroid": {
        "lat": 31.518576081081079109935672022402286529541015625,
        "lon": 32.3971200864864812274390715174376964569091796875
    },
    "bbox": {
        "min_lat": 31.5182716999999996687620296142995357513427734375,
        "min_lon": 32.39673830000000265272319666109979152679443359375,
        "max_lat": 31.5188883000000004130924935452640056610107421875,
        "max_lon": 32.397823299999998880593921057879924774169921875
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 17, 2026 05:44 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 27m
  • Data Points: 37 AIS positions
  • Period: 2026-09-17T05:44:23+00:00 to 2026-09-17T12:12:14+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 387.8999999999999772626324556767940521240234375,
    "points_in_zone": 37,
    "first_point": {
        "ts": "2026-09-17T05:44:23+00:00",
        "lat": 31.51870170000000115351213025860488414764404296875,
        "lon": 32.3974017000000031885065254755318164825439453125
    },
    "last_point": {
        "ts": "2026-09-17T12:12:14+00:00",
        "lat": 31.51843999999999823558027856051921844482421875,
        "lon": 32.39700830000000308928065351210534572601318359375
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 17, 2026 04:41 UTC 75.0%
  • Duration: 6h 36m
  • Radius: 69 meters
  • Data Points: 31 AIS positions
  • Centroid: 31.5186, 32.3972
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 69,
    "duration_minutes": 396.6000000000000227373675443232059478759765625,
    "points": 31,
    "centroid": {
        "lat": 31.51859403548386495685917907394468784332275390625,
        "lon": 32.39715236451613833423834876157343387603759765625
    },
    "bbox": {
        "min_lat": 31.5182716999999996687620296142995357513427734375,
        "min_lon": 32.39673830000000265272319666109979152679443359375,
        "max_lat": 31.5188883000000004130924935452640056610107421875,
        "max_lon": 32.397823299999998880593921057879924774169921875
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 17, 2026 04:41 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 31 AIS positions
  • Period: 2026-09-17T04:41:32+00:00 to 2026-09-17T11:18:08+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 396.6000000000000227373675443232059478759765625,
    "points_in_zone": 31,
    "first_point": {
        "ts": "2026-09-17T04:41:32+00:00",
        "lat": 31.518751699999999260626282193697988986968994140625,
        "lon": 32.39770999999999645524439984001219272613525390625
    },
    "last_point": {
        "ts": "2026-09-17T11:18:08+00:00",
        "lat": 31.518481699999998824068825342692434787750244140625,
        "lon": 32.396940000000000736690708436071872711181640625
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 17, 2026 03:06 UTC 75.0%
  • Duration: 6h 29m
  • Radius: 54 meters
  • Data Points: 22 AIS positions
  • Centroid: 31.5187, 32.3973
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 53.60000000000000142108547152020037174224853515625,
    "duration_minutes": 389.6000000000000227373675443232059478759765625,
    "points": 22,
    "centroid": {
        "lat": 31.51866499999999859937815926969051361083984375,
        "lon": 32.397294318181820926838554441928863525390625
    },
    "bbox": {
        "min_lat": 31.518248299999999773035597172565758228302001953125,
        "min_lon": 32.39697670000000329082467942498624324798583984375,
        "max_lat": 31.5188883000000004130924935452640056610107421875,
        "max_lon": 32.397823299999998880593921057879924774169921875
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 17, 2026 03:06 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 29m
  • Data Points: 22 AIS positions
  • Period: 2026-09-17T03:12:40+00:00 to 2026-09-17T09:42:16+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 389.6000000000000227373675443232059478759765625,
    "points_in_zone": 22,
    "first_point": {
        "ts": "2026-09-17T03:12:40+00:00",
        "lat": 31.518248299999999773035597172565758228302001953125,
        "lon": 32.39731499999999897454472375102341175079345703125
    },
    "last_point": {
        "ts": "2026-09-17T09:42:16+00:00",
        "lat": 31.5185467000000016923877410590648651123046875,
        "lon": 32.396978300000000672298483550548553466796875
    }
}

Methodology: 2026.01.18

Sts Eastern Black Sea Surveillance Zone Sep 17, 2026 02:04 UTC 95/100
Vessel A: SUKHONA (GURU) RUSSIA
Vessel B: CYCLONE (CYCLONE) RUSSIA
  • Minimum Distance: 28 meters
  • Average Distance: 41 meters
  • Duration: 5h 52m
  • Period: 2026-09-17T02:57:26+00:00 to 2026-09-17T08:49:36+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 (GURU and CYCLONE) maintained close proximity (min 28m, avg 41m) for 352 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 28m, avg 41m
Duration25/25Duration 352 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±6m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273129020,
        "imo": 9353096,
        "name": "GURU",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273123620,
        "imo": 9314167,
        "name": "CYCLONE",
        "flag": "RUSSIA"
    },
    "min_distance_m": 27.800000000000000710542735760100185871124267578125,
    "avg_distance_m": 41.10000000000000142108547152020037174224853515625,
    "distance_consistency_m": 5.5,
    "duration_minutes": 352.19999999999998863131622783839702606201171875,
    "overlap_duration_s": 21130,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-17T02:57:26+00:00",
        "end": "2026-09-17T08:49:36+00:00"
    },
    "points_count": {
        "vessel_a": 21,
        "vessel_b": 21
    },
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 28m, avg 41m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 352 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b16m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (GURU and CYCLONE) maintained close proximity (min 28m, avg 41m) for 352 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 17, 2026 02:01 UTC 75.0%
  • Duration: 6h 29m
  • Radius: 74 meters
  • Data Points: 20 AIS positions
  • Centroid: 31.5186, 32.3973
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 73.5,
    "duration_minutes": 389.6000000000000227373675443232059478759765625,
    "points": 20,
    "centroid": {
        "lat": 31.518625499999995298594512860290706157684326171875,
        "lon": 32.39734009000000014566467143595218658447265625
    },
    "bbox": {
        "min_lat": 31.517996700000001197849996970035135746002197265625,
        "min_lon": 32.39697670000000329082467942498624324798583984375,
        "max_lat": 31.5188883000000004130924935452640056610107421875,
        "max_lon": 32.397823299999998880593921057879924774169921875
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 17, 2026 02:01 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 29m
  • Data Points: 20 AIS positions
  • Period: 2026-09-17T02:54:38+00:00 to 2026-09-17T09:24:12+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 389.6000000000000227373675443232059478759765625,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-09-17T02:54:38+00:00",
        "lat": 31.517996700000001197849996970035135746002197265625,
        "lon": 32.39709669999999874789864406920969486236572265625
    },
    "last_point": {
        "ts": "2026-09-17T09:24:12+00:00",
        "lat": 31.5186633000000000492946128360927104949951171875,
        "lon": 32.39719000000000193040250451304018497467041015625
    }
}

Methodology: 2026.01.18

Sts Eastern Black Sea Surveillance Zone Sep 17, 2026 01:49 UTC 95/100
Vessel A: SUKHONA (GURU) RUSSIA
Vessel B: CYCLONE (CYCLONE) RUSSIA
  • Minimum Distance: 31 meters
  • Average Distance: 43 meters
  • Duration: 6h 22m
  • Period: 2026-09-17T01:56:38+00:00 to 2026-09-17T08:18:46+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 (GURU and CYCLONE) maintained close proximity (min 31m, avg 43m) for 382 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 43m
Duration25/25Duration 382 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±5m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273129020,
        "imo": 9353096,
        "name": "GURU",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273123620,
        "imo": 9314167,
        "name": "CYCLONE",
        "flag": "RUSSIA"
    },
    "min_distance_m": 31,
    "avg_distance_m": 43.2000000000000028421709430404007434844970703125,
    "distance_consistency_m": 4.9000000000000003552713678800500929355621337890625,
    "duration_minutes": 382.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 22928,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-17T01:56:38+00:00",
        "end": "2026-09-17T08:18:46+00:00"
    },
    "points_count": {
        "vessel_a": 29,
        "vessel_b": 29
    },
    "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 43m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 382 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (GURU and CYCLONE) maintained close proximity (min 31m, avg 43m) for 382 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 17, 2026 01:15 UTC 75.0%
  • Duration: 6h 30m
  • Radius: 97 meters
  • Data Points: 19 AIS positions
  • Centroid: 31.5184, 32.3973
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 97.099999999999994315658113919198513031005859375,
    "duration_minutes": 390.5,
    "points": 19,
    "centroid": {
        "lat": 31.518388157894737133801754680462181568145751953125,
        "lon": 32.397258778947360724487225525081157684326171875
    },
    "bbox": {
        "min_lat": 31.5176467000000002371962182223796844482421875,
        "min_lon": 32.396715000000000372892827726900577545166015625,
        "max_lat": 31.5188883000000004130924935452640056610107421875,
        "max_lon": 32.397823299999998880593921057879924774169921875
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 17, 2026 01:15 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 19 AIS positions
  • Period: 2026-09-17T01:55:44+00:00 to 2026-09-17T08:26:16+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 390.5,
    "points_in_zone": 19,
    "first_point": {
        "ts": "2026-09-17T01:55:44+00:00",
        "lat": 31.5176467000000002371962182223796844482421875,
        "lon": 32.396715000000000372892827726900577545166015625
    },
    "last_point": {
        "ts": "2026-09-17T08:26:16+00:00",
        "lat": 31.518551699999999726742316852323710918426513671875,
        "lon": 32.397030000000000882209860719740390777587890625
    }
}

Methodology: 2026.01.18

Sts Eastern Black Sea Surveillance Zone Sep 17, 2026 00:36 UTC 95/100
Vessel A: CYCLONE (CYCLONE) RUSSIA
Vessel B: SUKHONA (GURU) RUSSIA
  • Minimum Distance: 38 meters
  • Average Distance: 42 meters
  • Duration: 2h 20m
  • Period: 2026-09-17T00:33:48+00:00 to 2026-09-17T02:54:38+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 (CYCLONE and GURU) maintained close proximity (min 38m, avg 42m) for 141 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 38m, avg 42m
Duration25/25Duration 141 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": 273123620,
        "imo": 9314167,
        "name": "CYCLONE",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273129020,
        "imo": 9353096,
        "name": "GURU",
        "flag": "RUSSIA"
    },
    "min_distance_m": 37.60000000000000142108547152020037174224853515625,
    "avg_distance_m": 42.10000000000000142108547152020037174224853515625,
    "distance_consistency_m": 2.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 140.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 8450,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-17T00:33:48+00:00",
        "end": "2026-09-17T02:54:38+00:00"
    },
    "points_count": {
        "vessel_a": 10,
        "vessel_b": 10
    },
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 38m, avg 42m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 141 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 (CYCLONE and GURU) maintained close proximity (min 38m, avg 42m) for 141 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 17, 2026 00:33 UTC 75.0%
  • Duration: 6h 26m
  • Radius: 130 meters
  • Data Points: 16 AIS positions
  • Centroid: 31.5179, 32.3970
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 129.80000000000001136868377216160297393798828125,
    "duration_minutes": 386.3999999999999772626324556767940521240234375,
    "points": 16,
    "centroid": {
        "lat": 31.51788843749999813326212461106479167938232421875,
        "lon": 32.39700323125000380741767003200948238372802734375
    },
    "bbox": {
        "min_lat": 31.516761699999999990495780366472899913787841796875,
        "min_lon": 32.39656500000000249883669312112033367156982421875,
        "max_lat": 31.518848299999998374687493196688592433929443359375,
        "max_lon": 32.39770999999999645524439984001219272613525390625
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 17, 2026 00:33 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 6h 26m
  • Data Points: 16 AIS positions
  • Period: 2026-09-17T00:33:48+00:00 to 2026-09-17T07:00:13+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 386.3999999999999772626324556767940521240234375,
    "points_in_zone": 16,
    "first_point": {
        "ts": "2026-09-17T00:33:48+00:00",
        "lat": 31.516761699999999990495780366472899913787841796875,
        "lon": 32.39663170000000036452547647058963775634765625
    },
    "last_point": {
        "ts": "2026-09-17T07:00:13+00:00",
        "lat": 31.518848299999998374687493196688592433929443359375,
        "lon": 32.3975132999999999583451426587998867034912109375
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 16, 2026 23:45 UTC 75.0%
  • Duration: 5h 58m
  • Radius: 177 meters
  • Data Points: 15 AIS positions
  • Centroid: 31.5176, 32.3969
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 176.69999999999998863131622783839702606201171875,
    "duration_minutes": 358.69999999999998863131622783839702606201171875,
    "points": 15,
    "centroid": {
        "lat": 31.517642113333334208391534048132598400115966796875,
        "lon": 32.3969280066666698303379234857857227325439453125
    },
    "bbox": {
        "min_lat": 31.516053299999999381952875410206615924835205078125,
        "min_lon": 32.39656500000000249883669312112033367156982421875,
        "max_lat": 31.518751699999999260626282193697988986968994140625,
        "max_lon": 32.39770999999999645524439984001219272613525390625
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 16, 2026 23:45 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 5h 58m
  • Data Points: 15 AIS positions
  • Period: 2026-09-16T23:45:43+00:00 to 2026-09-17T05:44:23+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 358.69999999999998863131622783839702606201171875,
    "points_in_zone": 15,
    "first_point": {
        "ts": "2026-09-16T23:45:43+00:00",
        "lat": 31.516053299999999381952875410206615924835205078125,
        "lon": 32.39678500000000127556631923653185367584228515625
    },
    "last_point": {
        "ts": "2026-09-17T05:44:23+00:00",
        "lat": 31.51870170000000115351213025860488414764404296875,
        "lon": 32.3974017000000031885065254755318164825439453125
    }
}

Methodology: 2026.01.18

Loiter Eastern Black Sea Surveillance Zone Sep 16, 2026 21:31 UTC 75.0%
  • Duration: 5h 40m
  • Radius: 188 meters
  • Data Points: 17 AIS positions
  • Centroid: 31.5170, 32.3969
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 187.80000000000001136868377216160297393798828125,
    "duration_minutes": 340.8999999999999772626324556767940521240234375,
    "points": 17,
    "centroid": {
        "lat": 31.516984805882355402673056232742965221405029296875,
        "lon": 32.3969382411764712514923303388059139251708984375
    },
    "bbox": {
        "min_lat": 31.5153150000000010777512216009199619293212890625,
        "min_lon": 32.39656500000000249883669312112033367156982421875,
        "max_lat": 31.518248299999999773035597172565758228302001953125,
        "max_lon": 32.39731499999999897454472375102341175079345703125
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Zone Dwell Eastern Black Sea Surveillance Zone Sep 16, 2026 21:31 UTC 80.0%
  • Zone: Eastern Black Sea Surveillance Zone
  • Duration: 5h 40m
  • Data Points: 17 AIS positions
  • Period: 2026-09-16T21:31:46+00:00 to 2026-09-17T03:12:40+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "dwell_minutes": 340.8999999999999772626324556767940521240234375,
    "points_in_zone": 17,
    "first_point": {
        "ts": "2026-09-16T21:31:46+00:00",
        "lat": 31.515401700000001738999344524927437305450439453125,
        "lon": 32.3972600000000028330759960226714611053466796875
    },
    "last_point": {
        "ts": "2026-09-17T03:12:40+00:00",
        "lat": 31.518248299999999773035597172565758228302001953125,
        "lon": 32.39731499999999897454472375102341175079345703125
    }
}

Methodology: 2026.01.18

Sts Eastern Black Sea Surveillance Zone Sep 16, 2026 21:24 UTC 95/100
Vessel A: CYCLONE (CYCLONE) RUSSIA
Vessel B: SUKHONA (GURU) RUSSIA
  • Minimum Distance: 38 meters
  • Average Distance: 43 meters
  • Duration: 5h 22m
  • Period: 2026-09-16T21:31:46+00:00 to 2026-09-17T02:54:38+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 (CYCLONE and GURU) maintained close proximity (min 38m, avg 43m) for 323 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 38m, avg 43m
Duration25/25Duration 323 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±3m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273123620,
        "imo": 9314167,
        "name": "CYCLONE",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273129020,
        "imo": 9353096,
        "name": "GURU",
        "flag": "RUSSIA"
    },
    "min_distance_m": 37.60000000000000142108547152020037174224853515625,
    "avg_distance_m": 43,
    "distance_consistency_m": 2.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 322.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 19372,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-16T21:31:46+00:00",
        "end": "2026-09-17T02:54:38+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
    },
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 38m, avg 43m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 323 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CYCLONE and GURU) maintained close proximity (min 38m, avg 43m) for 323 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 16, 2026 20:03 UTC 75.0%
  • Duration: 6h 16m
  • Radius: 178 meters
  • Data Points: 18 AIS positions
  • Centroid: 31.5169, 32.3970
  • Zone: Eastern Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 177.599999999999994315658113919198513031005859375,
    "duration_minutes": 376.80000000000001136868377216160297393798828125,
    "points": 18,
    "centroid": {
        "lat": 31.51689453888888436949855531565845012664794921875,
        "lon": 32.39695945000000421032382291741669178009033203125
    },
    "bbox": {
        "min_lat": 31.5153150000000010777512216009199619293212890625,
        "min_lon": 32.39656500000000249883669312112033367156982421875,
        "max_lat": 31.518248299999999773035597172565758228302001953125,
        "max_lon": 32.39732000000000056161297834478318691253662109375
    },
    "zone_id": "discovered_167"
}

Methodology: 2026.01.18

Source snapshot

SanctionerAs ofEntity ID
🇬🇧 UK2025-09-299314167

We mirror official lists; always verify at the source.

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