DORIN

IMO 9290828

Vessel information

Vessel Name DORIN View name history 📜
IMO Number 9290828
MMSI 610107121
Vessel Type Oil Products Tanker
Flag 🇨🇲 Cameroon View flag history 📜
Call Sign TYD21
Gross Tonnage 23,298 GT
Year Built 2005

Sanctioned by

🇪🇺 EU 2025-07-20🇬🇧 UK 2025-05-09🇨🇦 CA 2025-06-13🇦🇺 AU 2025-09-18

Company & Ownership

🏢
Venkateswara Maritime Inc
IMO Company: 0203477
Address Room 102, Aarti Chambers, Mont Fleuri, Victoria, Mahe Island, Seychelles.
Status Active
Fleet 1.0 owner, 1.0 operator, 1.0 manager, 0.0 beneficial

Management & Operations

ISM Manager
JIN GANG SHAN SHIPMANAGEMENT
Room 1510, 1099, Xiangyin Lu, Yangpu Qu, Shanghai, China.
Commercial Manager
VENKATESWARA MARITIME INC
Room 102, Aarti Chambers, Mont Fleuri, Victoria, Mahe Island, Seychelles.
Registered Owner
VENKATESWARA MARITIME INC
Room 102, Aarti Chambers, Mont Fleuri, Victoria, Mahe Island, Seychelles.

Port State Control (PSC) Inspections

⚠️
Risk Level
MEDIUM
Last 36 Months
6
Inspections
1
Detentions
Last Inspection
📍 La Skhira
📅 2026-05-19

Survey Renewal & Certificates

Code Type Issuer Issued Expires
509 Document of Compliance Indian Register of Shipping (150) 29/11/2023 22/11/2028
512 Minimum Safe Manning Document Gabon (GA) 13/12/2023 23/02/2028

Programs & Notes

AU vessel designations (DFAT) | SEMA (Canada) — vessel designations | The Russia (Sanctions) (EU Exit) Regulations 2019 | Added in EU Sanctions Package 18 | (Council Decision (CFSP) 2025/1495, Annex XVI to Decision 2014/512/CFSP) | Press Release | Official Journal

DateOfListing: 2025-07-20 || DateDesignated: 2025-05-09 | Shipping sanctions: (see “Other information”) | Shipping sanctions: a specified ship is prohibited from being provided with access to or having its master or pilot cause it to enter a port in the UK, may have its registration on the UK Ship Register terminated, and a master or pilot of a specified ship may be given a port barring direction, a detention direction, and a port entry direction or a movement direction. | IMO 9290828 (“E MEI SHAN”) 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, IMO 9290828 is involved in carrying oil or oil products that originated in Russia from Russia to a third country.

Vessel Changes

14 changes

AIS Events

50 events detected • 2 zones • Last: Jul 16, 2026

Zone Dwell Western Black Sea Surveillance Zone Jul 16, 2026 09:12 UTC 80.0%
  • Zone: Western Black Sea Surveillance Zone
  • Duration: 1h 3m
  • Data Points: 12 AIS positions
  • Period: 2026-07-16T09:12:35+00:00 to 2026-07-16T10:16:06+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "dwell_minutes": 63.5,
    "points_in_zone": 12,
    "first_point": {
        "ts": "2026-07-16T09:12:35+00:00",
        "lat": 31.7140883000000002311935531906783580780029296875,
        "lon": 32.632125000000002046363078989088535308837890625
    },
    "last_point": {
        "ts": "2026-07-16T10:16:06+00:00",
        "lat": 31.876954999999998818793756072409451007843017578125,
        "lon": 32.7760966999999965310053084976971149444580078125
    }
}

Methodology: 2026.01.18

Zone Dwell Western Black Sea Surveillance Zone Jul 16, 2026 08:00 UTC 80.0%
  • Zone: Western Black Sea Surveillance Zone
  • Duration: 2h 15m
  • Data Points: 26 AIS positions
  • Period: 2026-07-16T08:00:33+00:00 to 2026-07-16T10:16:06+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "dwell_minutes": 135.599999999999994315658113919198513031005859375,
    "points_in_zone": 26,
    "first_point": {
        "ts": "2026-07-16T08:00:33+00:00",
        "lat": 31.58731999999999828787622391246259212493896484375,
        "lon": 32.38340670000000187656041816808283329010009765625
    },
    "last_point": {
        "ts": "2026-07-16T10:16:06+00:00",
        "lat": 31.876954999999998818793756072409451007843017578125,
        "lon": 32.7760966999999965310053084976971149444580078125
    }
}

Methodology: 2026.01.18

Zone Dwell Western Black Sea Surveillance Zone Jul 16, 2026 07:19 UTC 80.0%
  • Zone: Western Black Sea Surveillance Zone
  • Duration: 2h 57m
  • Data Points: 28 AIS positions
  • Period: 2026-07-16T07:19:03+00:00 to 2026-07-16T10:16:06+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "dwell_minutes": 177.099999999999994315658113919198513031005859375,
    "points_in_zone": 28,
    "first_point": {
        "ts": "2026-07-16T07:19:03+00:00",
        "lat": 31.54157670000000024401742848567664623260498046875,
        "lon": 32.2742099999999965120878187008202075958251953125
    },
    "last_point": {
        "ts": "2026-07-16T10:16:06+00:00",
        "lat": 31.876954999999998818793756072409451007843017578125,
        "lon": 32.7760966999999965310053084976971149444580078125
    }
}

Methodology: 2026.01.18

Zone Dwell Western Black Sea Surveillance Zone Jul 16, 2026 03:35 UTC 80.0%
  • Zone: Western Black Sea Surveillance Zone
  • Duration: 6h 25m
  • Data Points: 27 AIS positions
  • Period: 2026-07-16T03:35:01+00:00 to 2026-07-16T10:00:18+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "dwell_minutes": 385.30000000000001136868377216160297393798828125,
    "points_in_zone": 27,
    "first_point": {
        "ts": "2026-07-16T03:35:01+00:00",
        "lat": 31.538868300000000743921191315166652202606201171875,
        "lon": 32.27867169999999674701030016876757144927978515625
    },
    "last_point": {
        "ts": "2026-07-16T10:00:18+00:00",
        "lat": 31.824418300000001380567482556216418743133544921875,
        "lon": 32.75850669999999809078872203826904296875
    }
}

Methodology: 2026.01.18

Zone Dwell Black Sea Sanctioned Vessel Monitoring Zone Jul 16, 2026 03:35 UTC 80.0%
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
  • Duration: 3h 44m
  • Data Points: 2 AIS positions
  • Period: 2026-07-16T03:35:01+00:00 to 2026-07-16T07:19:03+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 224,
    "points_in_zone": 2,
    "first_point": {
        "ts": "2026-07-16T03:35:01+00:00",
        "lat": 31.538868300000000743921191315166652202606201171875,
        "lon": 32.27867169999999674701030016876757144927978515625
    },
    "last_point": {
        "ts": "2026-07-16T07:19:03+00:00",
        "lat": 31.54157670000000024401742848567664623260498046875,
        "lon": 32.2742099999999965120878187008202075958251953125
    }
}

Methodology: 2026.01.18

Ais Gap🛰️✗ Western Black Sea Surveillance Zone Jul 15, 2026 22:41 UTC 70.0%
  • Gap Duration: 4h 53m
  • Last Seen: 2026-07-15T22:41:44+00:00 at 31.5366, 32.2719 (Zone: Western Black Sea Surveillance Zone)
  • Next Seen: 2026-07-16T03:35:01+00:00 at 31.5389, 32.2787

🛰️ Gap Corroboration

✗ No Imagery

These are snapshots that may corroborate presence during the gap. They do not reconstruct a continuous route.

SAR Imagery (Sentinel-1)

Status: ✗ No SAR coverage

No Sentinel-1 scenes covering corridor and time window

VIIRS Thermal Anomaly

Status: ✗ No detections

No VIIRS thermal/light detections in corridor

Searched: 2026-07-16T03:45:04.747936+00:00

Show Raw Evidence JSON
{
    "gap_minutes": 293.30000000000001136868377216160297393798828125,
    "last_seen": {
        "ts": "2026-07-15T22:41:44+00:00",
        "lat": 31.5365733000000005858964868821203708648681640625,
        "lon": 32.2718966999999992140146787278354167938232421875,
        "sog": 3.70000000000000017763568394002504646778106689453125,
        "zone_id": "discovered_156"
    },
    "next_seen": {
        "ts": "2026-07-16T03:35:01+00:00",
        "lat": 31.538868300000000743921191315166652202606201171875,
        "lon": 32.27867169999999674701030016876757144927978515625,
        "zone_ids": [
            "discovered_025",
            "discovered_156"
        ]
    },
    "gap_enrichment": {
        "status": "not_found",
        "corridor": {
            "start": {
                "lat": 31.5365733000000005858964868821203708648681640625,
                "lon": 32.2718966999999992140146787278354167938232421875,
                "ts": "2026-07-15T22:41:44+00:00"
            },
            "end": {
                "lat": 31.538868300000000743921191315166652202606201171875,
                "lon": 32.27867169999999674701030016876757144927978515625,
                "ts": "2026-07-16T03:35:01+00:00"
            },
            "bbox": {
                "min_lat": 31.356393000000000625959728495217859745025634765625,
                "min_lon": 32.0604909999999989622665452770888805389404296875,
                "max_lat": 31.7190480000000007976268534548580646514892578125,
                "max_lon": 32.4900769999999994297468219883739948272705078125
            },
            "buffer_km": 20
        },
        "sar": {
            "status": "not_found",
            "notes": "No Sentinel-1 scenes covering corridor and time window"
        },
        "viirs": {
            "status": "not_found",
            "notes": "No VIIRS thermal\/light detections in corridor"
        },
        "searched_at": "2026-07-16T03:45:04.747936+00:00"
    }
}

Methodology: 2026.01.18

Ais Gap🛰️✗ Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 22:41 UTC 70.0%
  • Gap Duration: 4h 53m
  • Last Seen: 2026-07-15T22:41:44+00:00 at 31.5366, 32.2719 (Zone: Black Sea Sanctioned Vessel Monitoring Zone)
  • Next Seen: 2026-07-16T03:35:01+00:00 at 31.5389, 32.2787

🛰️ Gap Corroboration

✗ No Imagery

These are snapshots that may corroborate presence during the gap. They do not reconstruct a continuous route.

SAR Imagery (Sentinel-1)

Status: ✗ No SAR coverage

No Sentinel-1 scenes covering corridor and time window

VIIRS Thermal Anomaly

Status: ✗ No detections

No VIIRS thermal/light detections in corridor

Searched: 2026-07-16T03:45:02.118299+00:00

Show Raw Evidence JSON
{
    "gap_minutes": 293.30000000000001136868377216160297393798828125,
    "last_seen": {
        "ts": "2026-07-15T22:41:44+00:00",
        "lat": 31.5365733000000005858964868821203708648681640625,
        "lon": 32.2718966999999992140146787278354167938232421875,
        "sog": 3.70000000000000017763568394002504646778106689453125,
        "zone_id": "discovered_025"
    },
    "next_seen": {
        "ts": "2026-07-16T03:35:01+00:00",
        "lat": 31.538868300000000743921191315166652202606201171875,
        "lon": 32.27867169999999674701030016876757144927978515625,
        "zone_ids": [
            "discovered_025",
            "discovered_156"
        ]
    },
    "gap_enrichment": {
        "status": "not_found",
        "corridor": {
            "start": {
                "lat": 31.5365733000000005858964868821203708648681640625,
                "lon": 32.2718966999999992140146787278354167938232421875,
                "ts": "2026-07-15T22:41:44+00:00"
            },
            "end": {
                "lat": 31.538868300000000743921191315166652202606201171875,
                "lon": 32.27867169999999674701030016876757144927978515625,
                "ts": "2026-07-16T03:35:01+00:00"
            },
            "bbox": {
                "min_lat": 31.356393000000000625959728495217859745025634765625,
                "min_lon": 32.0604909999999989622665452770888805389404296875,
                "max_lat": 31.7190480000000007976268534548580646514892578125,
                "max_lon": 32.4900769999999994297468219883739948272705078125
            },
            "buffer_km": 20
        },
        "sar": {
            "status": "not_found",
            "notes": "No Sentinel-1 scenes covering corridor and time window"
        },
        "viirs": {
            "status": "not_found",
            "notes": "No VIIRS thermal\/light detections in corridor"
        },
        "searched_at": "2026-07-16T03:45:02.118299+00:00"
    }
}

Methodology: 2026.01.18

Zone Dwell Western Black Sea Surveillance Zone Jul 15, 2026 22:38 UTC 80.0%
  • Zone: Western Black Sea Surveillance Zone
  • Duration: 4h 56m
  • Data Points: 3 AIS positions
  • Period: 2026-07-15T22:38:35+00:00 to 2026-07-16T03:35:01+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "dwell_minutes": 296.3999999999999772626324556767940521240234375,
    "points_in_zone": 3,
    "first_point": {
        "ts": "2026-07-15T22:38:35+00:00",
        "lat": 31.534825000000001438138497178442776203155517578125,
        "lon": 32.2682683000000025685949367471039295196533203125
    },
    "last_point": {
        "ts": "2026-07-16T03:35:01+00:00",
        "lat": 31.538868300000000743921191315166652202606201171875,
        "lon": 32.27867169999999674701030016876757144927978515625
    }
}

Methodology: 2026.01.18

Zone Dwell Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 22:20 UTC 80.0%
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
  • Duration: 5h 14m
  • Data Points: 9 AIS positions
  • Period: 2026-07-15T22:20:23+00:00 to 2026-07-16T03:35:01+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 314.6000000000000227373675443232059478759765625,
    "points_in_zone": 9,
    "first_point": {
        "ts": "2026-07-15T22:20:23+00:00",
        "lat": 31.5320032999999995126927387900650501251220703125,
        "lon": 32.24288829999999705933078075759112834930419921875
    },
    "last_point": {
        "ts": "2026-07-16T03:35:01+00:00",
        "lat": 31.538868300000000743921191315166652202606201171875,
        "lon": 32.27867169999999674701030016876757144927978515625
    }
}

Methodology: 2026.01.18

Zone Dwell Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 21:57 UTC 80.0%
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
  • Duration: 5h 37m
  • Data Points: 10 AIS positions
  • Period: 2026-07-15T21:57:14+00:00 to 2026-07-16T03:35:01+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 337.80000000000001136868377216160297393798828125,
    "points_in_zone": 10,
    "first_point": {
        "ts": "2026-07-15T21:57:14+00:00",
        "lat": 31.523603300000001325997800449840724468231201171875,
        "lon": 32.2568399999999968486008583568036556243896484375
    },
    "last_point": {
        "ts": "2026-07-16T03:35:01+00:00",
        "lat": 31.538868300000000743921191315166652202606201171875,
        "lon": 32.27867169999999674701030016876757144927978515625
    }
}

Methodology: 2026.01.18

Zone Dwell Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 18:02 UTC 80.0%
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
  • Duration: 4h 39m
  • Data Points: 14 AIS positions
  • Period: 2026-07-15T18:02:35+00:00 to 2026-07-15T22:41:44+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 279.1000000000000227373675443232059478759765625,
    "points_in_zone": 14,
    "first_point": {
        "ts": "2026-07-15T18:02:35+00:00",
        "lat": 31.523353300000000132286004372872412204742431640625,
        "lon": 32.2566599999999965575625537894666194915771484375
    },
    "last_point": {
        "ts": "2026-07-15T22:41:44+00:00",
        "lat": 31.5365733000000005858964868821203708648681640625,
        "lon": 32.2718966999999992140146787278354167938232421875
    }
}

Methodology: 2026.01.18

Loiter Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 17:01 UTC 75.0%
  • Duration: 4h 56m
  • Radius: 34 meters
  • Data Points: 16 AIS positions
  • Centroid: 31.5233, 32.2567
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 33.7999999999999971578290569595992565155029296875,
    "duration_minutes": 296,
    "points": 16,
    "centroid": {
        "lat": 31.523340937499998659632183262147009372711181640625,
        "lon": 32.2566592687499991143340594135224819183349609375
    },
    "bbox": {
        "min_lat": 31.523193299999999084093360579572618007659912109375,
        "min_lon": 32.256491699999997990744304843246936798095703125,
        "max_lat": 31.523603300000001325997800449840724468231201171875,
        "max_lon": 32.2568399999999968486008583568036556243896484375
    },
    "zone_id": "discovered_025"
}

Methodology: 2026.01.18

Zone Dwell Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 17:01 UTC 80.0%
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
  • Duration: 5h 40m
  • Data Points: 24 AIS positions
  • Period: 2026-07-15T17:01:14+00:00 to 2026-07-15T22:41:44+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 340.5,
    "points_in_zone": 24,
    "first_point": {
        "ts": "2026-07-15T17:01:14+00:00",
        "lat": 31.523236700000001775379132595844566822052001953125,
        "lon": 32.2566666999999966947143548168241977691650390625
    },
    "last_point": {
        "ts": "2026-07-15T22:41:44+00:00",
        "lat": 31.5365733000000005858964868821203708648681640625,
        "lon": 32.2718966999999992140146787278354167938232421875
    }
}

Methodology: 2026.01.18

Sts🛰️✗ Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 16:02 UTC 85/100
Vessel A: Savitri (SAVITRI) SIERRA LEONE
Vessel B: DORIN (DORIN) CAMEROON
  • Minimum Distance: 14 meters
  • Average Distance: 39 meters
  • Duration: 1h 25m
  • Period: 2026-07-15T16:02:16+00:00 to 2026-07-15T17:27:26+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (SAVITRI and DORIN) maintained close proximity (min 14m, avg 39m) for 85 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Black Sea Sanctioned Vessel Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 14m, avg 39m
Duration15/25Duration 85 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±12m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Black Sea Sanctioned Vessel Monitoring Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-15T22:30:11.861598+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 667002039,
        "imo": 9289752,
        "name": "SAVITRI",
        "flag": "SIERRA LEONE"
    },
    "vessel_b": {
        "mmsi": 613414203,
        "imo": 9290828,
        "name": "DORIN",
        "flag": "CAMEROON"
    },
    "min_distance_m": 13.5,
    "avg_distance_m": 38.60000000000000142108547152020037174224853515625,
    "distance_consistency_m": 11.699999999999999289457264239899814128875732421875,
    "duration_minutes": 85.2000000000000028421709430404007434844970703125,
    "overlap_duration_s": 5110,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0.13000000000000000444089209850062616169452667236328125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.11000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-07-15T16:02:16+00:00",
        "end": "2026-07-15T17:27:26+00:00"
    },
    "points_count": {
        "vessel_a": 19,
        "vessel_b": 19
    },
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 14m, avg 39m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 85 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b112m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Black Sea Sanctioned Vessel Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (SAVITRI and DORIN) maintained close proximity (min 14m, avg 39m) for 85 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Black Sea Sanctioned Vessel Monitoring Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.523040800000000416503098676912486553192138671875,
            "lon": 32.25640409999999747014953754842281341552734375
        },
        "time_window": {
            "start_ts": "2026-07-15T16:02:16+00:00",
            "end_ts": "2026-07-15T17:27:26+00:00"
        },
        "searched_at": "2026-07-15T22:30:11.861598+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Loiter Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 16:00 UTC 75.0%
  • Duration: 5h 56m
  • Radius: 46 meters
  • Data Points: 29 AIS positions
  • Centroid: 31.5232, 32.2566
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 46.2000000000000028421709430404007434844970703125,
    "duration_minutes": 356.30000000000001136868377216160297393798828125,
    "points": 29,
    "centroid": {
        "lat": 31.523243741379314286632506991736590862274169921875,
        "lon": 32.256594134482753588599734939634799957275390625
    },
    "bbox": {
        "min_lat": 31.523005000000001274429450859315693378448486328125,
        "min_lon": 32.2563999999999992951416061259806156158447265625,
        "max_lat": 31.523603300000001325997800449840724468231201171875,
        "max_lon": 32.2568399999999968486008583568036556243896484375
    },
    "zone_id": "discovered_025"
}

Methodology: 2026.01.18

Zone Dwell Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 16:00 UTC 80.0%
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
  • Duration: 6h 28m
  • Data Points: 35 AIS positions
  • Period: 2026-07-15T16:13:23+00:00 to 2026-07-15T22:41:44+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 388.3999999999999772626324556767940521240234375,
    "points_in_zone": 35,
    "first_point": {
        "ts": "2026-07-15T16:13:23+00:00",
        "lat": 31.52315829999999863275661482475697994232177734375,
        "lon": 32.256585000000001173248165287077426910400390625
    },
    "last_point": {
        "ts": "2026-07-15T22:41:44+00:00",
        "lat": 31.5365733000000005858964868821203708648681640625,
        "lon": 32.2718966999999992140146787278354167938232421875
    }
}

Methodology: 2026.01.18

Sts Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 15:07 UTC 95/100
Vessel A: Savitri (SAVITRI) SIERRA LEONE
Vessel B: DORIN (DORIN) CAMEROON
  • Minimum Distance: 14 meters
  • Average Distance: 39 meters
  • Duration: 2h 3m
  • Period: 2026-07-15T15:23:36+00:00 to 2026-07-15T17:27:26+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (SAVITRI and DORIN) maintained close proximity (min 14m, avg 39m) for 124 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Black Sea Sanctioned Vessel Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 14m, avg 39m
Duration25/25Duration 124 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±10m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Black Sea Sanctioned Vessel Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 667002039,
        "imo": 9289752,
        "name": "SAVITRI",
        "flag": "SIERRA LEONE"
    },
    "vessel_b": {
        "mmsi": 613414203,
        "imo": 9290828,
        "name": "DORIN",
        "flag": "CAMEROON"
    },
    "min_distance_m": 13.5,
    "avg_distance_m": 38.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 10.199999999999999289457264239899814128875732421875,
    "duration_minutes": 123.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 7430,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.11999999999999999555910790149937383830547332763671875,
    "speed_b_std": 0.13000000000000000444089209850062616169452667236328125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.11999999999999999555910790149937383830547332763671875,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-07-15T15:23:36+00:00",
        "end": "2026-07-15T17:27:26+00:00"
    },
    "points_count": {
        "vessel_a": 28,
        "vessel_b": 28
    },
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 14m, avg 39m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 124 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b110m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Black Sea Sanctioned Vessel Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (SAVITRI and DORIN) maintained close proximity (min 14m, avg 39m) for 124 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Black Sea Sanctioned Vessel Monitoring Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Loiter Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 15:02 UTC 75.0%
  • Duration: 6h 35m
  • Radius: 48 meters
  • Data Points: 38 AIS positions
  • Centroid: 31.5232, 32.2566
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 48.39999999999999857891452847979962825775146484375,
    "duration_minutes": 395,
    "points": 38,
    "centroid": {
        "lat": 31.5232327657894728645260329358279705047607421875,
        "lon": 32.25657091842104051693240762688219547271728515625
    },
    "bbox": {
        "min_lat": 31.523005000000001274429450859315693378448486328125,
        "min_lon": 32.25634500000000315367287839762866497039794921875,
        "max_lat": 31.523603300000001325997800449840724468231201171875,
        "max_lon": 32.2568399999999968486008583568036556243896484375
    },
    "zone_id": "discovered_025"
}

Methodology: 2026.01.18

Zone Dwell Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 15:02 UTC 80.0%
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
  • Duration: 6h 36m
  • Data Points: 36 AIS positions
  • Period: 2026-07-15T15:51:54+00:00 to 2026-07-15T22:28:33+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 396.6000000000000227373675443232059478759765625,
    "points_in_zone": 36,
    "first_point": {
        "ts": "2026-07-15T15:51:54+00:00",
        "lat": 31.52317000000000035697667044587433338165283203125,
        "lon": 32.25644170000000343634383170865476131439208984375
    },
    "last_point": {
        "ts": "2026-07-15T22:28:33+00:00",
        "lat": 31.538385000000001667785909376107156276702880859375,
        "lon": 32.2498233000000027459464035928249359130859375
    }
}

Methodology: 2026.01.18

Sts Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 14:56 UTC 95/100
Vessel A: DORIN (DORIN) CAMEROON
Vessel B: Savitri (SAVITRI) SIERRA LEONE
  • Minimum Distance: 14 meters
  • Average Distance: 41 meters
  • Duration: 2h 29m
  • Period: 2026-07-15T14:56:24+00:00 to 2026-07-15T17:26:13+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (DORIN and SAVITRI) maintained close proximity (min 14m, avg 41m) for 150 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Black Sea Sanctioned Vessel Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 14m, avg 41m
Duration25/25Duration 150 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±9m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Black Sea Sanctioned Vessel Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 613414203,
        "imo": 9290828,
        "name": "DORIN",
        "flag": "CAMEROON"
    },
    "vessel_b": {
        "mmsi": 667002039,
        "imo": 9289752,
        "name": "SAVITRI",
        "flag": "SIERRA LEONE"
    },
    "min_distance_m": 13.5,
    "avg_distance_m": 41.10000000000000142108547152020037174224853515625,
    "distance_consistency_m": 8.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 149.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 8989,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-15T14:56:24+00:00",
        "end": "2026-07-15T17:26:13+00:00"
    },
    "points_count": {
        "vessel_a": 35,
        "vessel_b": 35
    },
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 14m, avg 41m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 150 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b19m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Black Sea Sanctioned Vessel Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (DORIN and SAVITRI) maintained close proximity (min 14m, avg 41m) for 150 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Black Sea Sanctioned Vessel Monitoring Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Loiter Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 14:02 UTC 75.0%
  • Duration: 4h 43m
  • Radius: 33 meters
  • Data Points: 54 AIS positions
  • Centroid: 31.5232, 32.2566
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 32.7000000000000028421709430404007434844970703125,
    "duration_minutes": 283.8999999999999772626324556767940521240234375,
    "points": 54,
    "centroid": {
        "lat": 31.5232043240740722467307932674884796142578125,
        "lon": 32.25655018148147945566961425356566905975341796875
    },
    "bbox": {
        "min_lat": 31.523005000000001274429450859315693378448486328125,
        "min_lon": 32.2562599999999974897946231067180633544921875,
        "max_lat": 31.52343499999999920646587270312011241912841796875,
        "max_lon": 32.2568150000000031241143005900084972381591796875
    },
    "zone_id": "discovered_025"
}

Methodology: 2026.01.18

Zone Dwell Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 14:02 UTC 80.0%
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
  • Duration: 4h 43m
  • Data Points: 54 AIS positions
  • Period: 2026-07-15T14:02:25+00:00 to 2026-07-15T18:46:18+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 283.8999999999999772626324556767940521240234375,
    "points_in_zone": 54,
    "first_point": {
        "ts": "2026-07-15T14:02:25+00:00",
        "lat": 31.523146700000001629859980312176048755645751953125,
        "lon": 32.25651169999999723358996561728417873382568359375
    },
    "last_point": {
        "ts": "2026-07-15T18:46:18+00:00",
        "lat": 31.52339500000000072077455115504562854766845703125,
        "lon": 32.256581699999998136263457126915454864501953125
    }
}

Methodology: 2026.01.18

Sts Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 13:05 UTC 95/100
Vessel A: Savitri (SAVITRI) SIERRA LEONE
Vessel B: DORIN (DORIN) CAMEROON
  • Minimum Distance: 14 meters
  • Average Distance: 39 meters
  • Duration: 3h 40m
  • Period: 2026-07-15T13:46:58+00:00 to 2026-07-15T17:27:26+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (SAVITRI and DORIN) maintained close proximity (min 14m, avg 39m) for 220 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Black Sea Sanctioned Vessel Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 14m, avg 39m
Duration25/25Duration 220 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±9m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Black Sea Sanctioned Vessel Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 667002039,
        "imo": 9289752,
        "name": "SAVITRI",
        "flag": "SIERRA LEONE"
    },
    "vessel_b": {
        "mmsi": 613414203,
        "imo": 9290828,
        "name": "DORIN",
        "flag": "CAMEROON"
    },
    "min_distance_m": 13.5,
    "avg_distance_m": 38.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 9.300000000000000710542735760100185871124267578125,
    "duration_minutes": 220.5,
    "overlap_duration_s": 13228,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0.13000000000000000444089209850062616169452667236328125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.11000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-07-15T13:46:58+00:00",
        "end": "2026-07-15T17:27:26+00:00"
    },
    "points_count": {
        "vessel_a": 34,
        "vessel_b": 34
    },
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 14m, avg 39m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 220 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b19m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Black Sea Sanctioned Vessel Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (SAVITRI and DORIN) maintained close proximity (min 14m, avg 39m) for 220 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Black Sea Sanctioned Vessel Monitoring Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Loiter Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 13:01 UTC 75.0%
  • Duration: 5h 44m
  • Radius: 33 meters
  • Data Points: 67 AIS positions
  • Centroid: 31.5232, 32.2566
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 32.60000000000000142108547152020037174224853515625,
    "duration_minutes": 344.5,
    "points": 67,
    "centroid": {
        "lat": 31.52320015074627690410125069320201873779296875,
        "lon": 32.25655698656715486549728666432201862335205078125
    },
    "bbox": {
        "min_lat": 31.523005000000001274429450859315693378448486328125,
        "min_lon": 32.2562599999999974897946231067180633544921875,
        "max_lat": 31.52343499999999920646587270312011241912841796875,
        "max_lon": 32.2568150000000031241143005900084972381591796875
    },
    "zone_id": "discovered_025"
}

Methodology: 2026.01.18

Zone Dwell Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 13:01 UTC 80.0%
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
  • Duration: 5h 44m
  • Data Points: 67 AIS positions
  • Period: 2026-07-15T13:01:47+00:00 to 2026-07-15T18:46:18+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 344.5,
    "points_in_zone": 67,
    "first_point": {
        "ts": "2026-07-15T13:01:47+00:00",
        "lat": 31.5231449999999995270627550780773162841796875,
        "lon": 32.25663999999999731471689301542937755584716796875
    },
    "last_point": {
        "ts": "2026-07-15T18:46:18+00:00",
        "lat": 31.52339500000000072077455115504562854766845703125,
        "lon": 32.256581699999998136263457126915454864501953125
    }
}

Methodology: 2026.01.18

Sts Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 12:24 UTC 90/100
Vessel A: DORIN (DORIN) CAMEROON
Vessel B: Savitri (SAVITRI) SIERRA LEONE
  • Minimum Distance: 35 meters
  • Average Distance: 42 meters
  • Duration: 1h 38m
  • Period: 2026-07-15T12:24:28+00:00 to 2026-07-15T14:02:25+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (DORIN and SAVITRI) maintained close proximity (min 35m, avg 42m) for 98 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Black Sea Sanctioned Vessel Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 35m, avg 42m
Duration20/25Duration 98 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±5m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Black Sea Sanctioned Vessel Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 613414203,
        "imo": 9290828,
        "name": "DORIN",
        "flag": "CAMEROON"
    },
    "vessel_b": {
        "mmsi": 667002039,
        "imo": 9289752,
        "name": "SAVITRI",
        "flag": "SIERRA LEONE"
    },
    "min_distance_m": 35.10000000000000142108547152020037174224853515625,
    "avg_distance_m": 42.39999999999999857891452847979962825775146484375,
    "distance_consistency_m": 4.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 98,
    "overlap_duration_s": 5877,
    "speed_a_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_a_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-15T12:24:28+00:00",
        "end": "2026-07-15T14:02:25+00:00"
    },
    "points_count": {
        "vessel_a": 25,
        "vessel_b": 25
    },
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 35m, avg 42m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 98 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: Black Sea Sanctioned Vessel Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (DORIN and SAVITRI) maintained close proximity (min 35m, avg 42m) for 98 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Black Sea Sanctioned Vessel Monitoring Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Loiter Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 12:03 UTC 75.0%
  • Duration: 6h 35m
  • Radius: 31 meters
  • Data Points: 81 AIS positions
  • Centroid: 31.5232, 32.2566
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 31,
    "duration_minutes": 395,
    "points": 81,
    "centroid": {
        "lat": 31.52320866419751865805665147490799427032470703125,
        "lon": 32.25657314444445233903024927712976932525634765625
    },
    "bbox": {
        "min_lat": 31.523005000000001274429450859315693378448486328125,
        "min_lon": 32.2562599999999974897946231067180633544921875,
        "max_lat": 31.52343499999999920646587270312011241912841796875,
        "max_lon": 32.2568150000000031241143005900084972381591796875
    },
    "zone_id": "discovered_025"
}

Methodology: 2026.01.18

Zone Dwell Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 12:03 UTC 80.0%
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
  • Duration: 6h 35m
  • Data Points: 81 AIS positions
  • Period: 2026-07-15T12:11:17+00:00 to 2026-07-15T18:46:18+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 395,
    "points_in_zone": 81,
    "first_point": {
        "ts": "2026-07-15T12:11:17+00:00",
        "lat": 31.523198300000000671161615173332393169403076171875,
        "lon": 32.25665670000000062600520323030650615692138671875
    },
    "last_point": {
        "ts": "2026-07-15T18:46:18+00:00",
        "lat": 31.52339500000000072077455115504562854766845703125,
        "lon": 32.256581699999998136263457126915454864501953125
    }
}

Methodology: 2026.01.18

Loiter Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 11:18 UTC 75.0%
  • Duration: 6h 36m
  • Radius: 31 meters
  • Data Points: 85 AIS positions
  • Centroid: 31.5232, 32.2566
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 31.300000000000000710542735760100185871124267578125,
    "duration_minutes": 396.6000000000000227373675443232059478759765625,
    "points": 85,
    "centroid": {
        "lat": 31.523209237647048297503715730272233486175537109375,
        "lon": 32.25657734941177068321849219501018524169921875
    },
    "bbox": {
        "min_lat": 31.523005000000001274429450859315693378448486328125,
        "min_lon": 32.2562599999999974897946231067180633544921875,
        "max_lat": 31.52343499999999920646587270312011241912841796875,
        "max_lon": 32.2568150000000031241143005900084972381591796875
    },
    "zone_id": "discovered_025"
}

Methodology: 2026.01.18

Zone Dwell Black Sea Sanctioned Vessel Monitoring Zone Jul 15, 2026 11:18 UTC 80.0%
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
  • Duration: 6h 36m
  • Data Points: 85 AIS positions
  • Period: 2026-07-15T11:51:37+00:00 to 2026-07-15T18:28:14+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 396.6000000000000227373675443232059478759765625,
    "points_in_zone": 85,
    "first_point": {
        "ts": "2026-07-15T11:51:37+00:00",
        "lat": 31.523256700000001018224793369881808757781982421875,
        "lon": 32.25670170000000069876477937214076519012451171875
    },
    "last_point": {
        "ts": "2026-07-15T18:28:14+00:00",
        "lat": 31.523376700000000028012436814606189727783203125,
        "lon": 32.2567099999999982173903845250606536865234375
    }
}

Methodology: 2026.01.18

Zone Dwell Black Sea Sanctioned Vessel Monitoring Zone Jul 14, 2026 23:46 UTC 80.0%
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
  • Duration: 2h 10m
  • Data Points: 4 AIS positions
  • Period: 2026-07-14T23:46:47+00:00 to 2026-07-15T01:56:47+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 130,
    "points_in_zone": 4,
    "first_point": {
        "ts": "2026-07-14T23:46:47+00:00",
        "lat": 31.5235033000000015590558177791535854339599609375,
        "lon": 32.25701670000000120808181236498057842254638671875
    },
    "last_point": {
        "ts": "2026-07-15T01:56:47+00:00",
        "lat": 31.52383329999999972415025695227086544036865234375,
        "lon": 32.25700830000000252084646490402519702911376953125
    }
}

Methodology: 2026.01.18

Zone Dwell Black Sea Sanctioned Vessel Monitoring Zone Jul 14, 2026 22:02 UTC 80.0%
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
  • Duration: 3h 54m
  • Data Points: 8 AIS positions
  • Period: 2026-07-14T22:02:28+00:00 to 2026-07-15T01:56:47+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 234.30000000000001136868377216160297393798828125,
    "points_in_zone": 8,
    "first_point": {
        "ts": "2026-07-14T22:02:28+00:00",
        "lat": 31.5235832999999985304384608753025531768798828125,
        "lon": 32.2569117000000034067852539010345935821533203125
    },
    "last_point": {
        "ts": "2026-07-15T01:56:47+00:00",
        "lat": 31.52383329999999972415025695227086544036865234375,
        "lon": 32.25700830000000252084646490402519702911376953125
    }
}

Methodology: 2026.01.18

Loiter Black Sea Sanctioned Vessel Monitoring Zone Jul 14, 2026 21:00 UTC 75.0%
  • Duration: 4h 56m
  • Radius: 37 meters
  • Data Points: 14 AIS positions
  • Centroid: 31.5235, 32.2569
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 37.2000000000000028421709430404007434844970703125,
    "duration_minutes": 296.5,
    "points": 14,
    "centroid": {
        "lat": 31.523546657142855309530204976908862590789794921875,
        "lon": 32.2569273785714329960683244280517101287841796875
    },
    "bbox": {
        "min_lat": 31.523251699999999431156538776122033596038818359375,
        "min_lon": 32.256675000000001318767317570745944976806640625,
        "max_lat": 31.52383329999999972415025695227086544036865234375,
        "max_lon": 32.25708499999999645524439984001219272613525390625
    },
    "zone_id": "discovered_025"
}

Methodology: 2026.01.18

Zone Dwell Black Sea Sanctioned Vessel Monitoring Zone Jul 14, 2026 21:00 UTC 80.0%
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
  • Duration: 4h 56m
  • Data Points: 14 AIS positions
  • Period: 2026-07-14T21:00:17+00:00 to 2026-07-15T01:56:47+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 296.5,
    "points_in_zone": 14,
    "first_point": {
        "ts": "2026-07-14T21:00:17+00:00",
        "lat": 31.523308300000000059526428231038153171539306640625,
        "lon": 32.256675000000001318767317570745944976806640625
    },
    "last_point": {
        "ts": "2026-07-15T01:56:47+00:00",
        "lat": 31.52383329999999972415025695227086544036865234375,
        "lon": 32.25700830000000252084646490402519702911376953125
    }
}

Methodology: 2026.01.18

Loiter Black Sea Sanctioned Vessel Monitoring Zone Jul 14, 2026 20:01 UTC 75.0%
  • Duration: 5h 55m
  • Radius: 47 meters
  • Data Points: 21 AIS positions
  • Centroid: 31.5234, 32.2568
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 46.5,
    "duration_minutes": 355.3999999999999772626324556767940521240234375,
    "points": 21,
    "centroid": {
        "lat": 31.5234415761904784858415951021015644073486328125,
        "lon": 32.25683397142856989603387773968279361724853515625
    },
    "bbox": {
        "min_lat": 31.5231500000000011141310096718370914459228515625,
        "min_lon": 32.25647500000000178488335222937166690826416015625,
        "max_lat": 31.52383329999999972415025695227086544036865234375,
        "max_lon": 32.25708499999999645524439984001219272613525390625
    },
    "zone_id": "discovered_025"
}

Methodology: 2026.01.18

Zone Dwell Black Sea Sanctioned Vessel Monitoring Zone Jul 14, 2026 20:01 UTC 80.0%
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
  • Duration: 5h 55m
  • Data Points: 21 AIS positions
  • Period: 2026-07-14T20:01:26+00:00 to 2026-07-15T01:56:47+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 355.3999999999999772626324556767940521240234375,
    "points_in_zone": 21,
    "first_point": {
        "ts": "2026-07-14T20:01:26+00:00",
        "lat": 31.523263299999999986766852089203894138336181640625,
        "lon": 32.25678169999999767014742246828973293304443359375
    },
    "last_point": {
        "ts": "2026-07-15T01:56:47+00:00",
        "lat": 31.52383329999999972415025695227086544036865234375,
        "lon": 32.25700830000000252084646490402519702911376953125
    }
}

Methodology: 2026.01.18

Loiter Black Sea Sanctioned Vessel Monitoring Zone Jul 14, 2026 19:03 UTC 75.0%
  • Duration: 6h 26m
  • Radius: 50 meters
  • Data Points: 26 AIS positions
  • Centroid: 31.5234, 32.2568
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 50,
    "duration_minutes": 386.5,
    "points": 26,
    "centroid": {
        "lat": 31.5234147384615397413654136471450328826904296875,
        "lon": 32.25681314230769913820040528662502765655517578125
    },
    "bbox": {
        "min_lat": 31.5231500000000011141310096718370914459228515625,
        "min_lon": 32.25647500000000178488335222937166690826416015625,
        "max_lat": 31.52383329999999972415025695227086544036865234375,
        "max_lon": 32.25708499999999645524439984001219272613525390625
    },
    "zone_id": "discovered_025"
}

Methodology: 2026.01.18

Zone Dwell Black Sea Sanctioned Vessel Monitoring Zone Jul 14, 2026 19:03 UTC 80.0%
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
  • Duration: 6h 26m
  • Data Points: 26 AIS positions
  • Period: 2026-07-14T19:30:15+00:00 to 2026-07-15T01:56:47+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 386.5,
    "points_in_zone": 26,
    "first_point": {
        "ts": "2026-07-14T19:30:15+00:00",
        "lat": 31.523228299999999535430106334388256072998046875,
        "lon": 32.25664669999999745186869404278695583343505859375
    },
    "last_point": {
        "ts": "2026-07-15T01:56:47+00:00",
        "lat": 31.52383329999999972415025695227086544036865234375,
        "lon": 32.25700830000000252084646490402519702911376953125
    }
}

Methodology: 2026.01.18

Loiter Black Sea Sanctioned Vessel Monitoring Zone Jul 14, 2026 18:07 UTC 75.0%
  • Duration: 5h 39m
  • Radius: 38 meters
  • Data Points: 33 AIS positions
  • Centroid: 31.5234, 32.2568
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 37.7000000000000028421709430404007434844970703125,
    "duration_minutes": 339.69999999999998863131622783839702606201171875,
    "points": 33,
    "centroid": {
        "lat": 31.52335783030303417717732372693717479705810546875,
        "lon": 32.256762375757574545787065289914608001708984375
    },
    "bbox": {
        "min_lat": 31.5231500000000011141310096718370914459228515625,
        "min_lon": 32.25647500000000178488335222937166690826416015625,
        "max_lat": 31.52367170000000129448380903340876102447509765625,
        "max_lon": 32.25701670000000120808181236498057842254638671875
    },
    "zone_id": "discovered_025"
}

Methodology: 2026.01.18

Zone Dwell Black Sea Sanctioned Vessel Monitoring Zone Jul 14, 2026 18:07 UTC 80.0%
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
  • Duration: 5h 39m
  • Data Points: 33 AIS positions
  • Period: 2026-07-14T18:07:05+00:00 to 2026-07-14T23:46:47+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 339.69999999999998863131622783839702606201171875,
    "points_in_zone": 33,
    "first_point": {
        "ts": "2026-07-14T18:07:05+00:00",
        "lat": 31.523346700000001163743945653550326824188232421875,
        "lon": 32.2567183000000028414433472789824008941650390625
    },
    "last_point": {
        "ts": "2026-07-14T23:46:47+00:00",
        "lat": 31.5235033000000015590558177791535854339599609375,
        "lon": 32.25701670000000120808181236498057842254638671875
    }
}

Methodology: 2026.01.18

Loiter Black Sea Sanctioned Vessel Monitoring Zone Jul 14, 2026 17:01 UTC 75.0%
  • Duration: 6h 29m
  • Radius: 38 meters
  • Data Points: 40 AIS positions
  • Centroid: 31.5234, 32.2568
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 38,
    "duration_minutes": 389,
    "points": 40,
    "centroid": {
        "lat": 31.523354792499986842813086695969104766845703125,
        "lon": 32.2567631699999992633820511400699615478515625
    },
    "bbox": {
        "min_lat": 31.5231500000000011141310096718370914459228515625,
        "min_lon": 32.25647500000000178488335222937166690826416015625,
        "max_lat": 31.52367170000000129448380903340876102447509765625,
        "max_lon": 32.25701670000000120808181236498057842254638671875
    },
    "zone_id": "discovered_025"
}

Methodology: 2026.01.18

Zone Dwell Black Sea Sanctioned Vessel Monitoring Zone Jul 14, 2026 17:01 UTC 80.0%
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
  • Duration: 6h 29m
  • Data Points: 40 AIS positions
  • Period: 2026-07-14T17:17:46+00:00 to 2026-07-14T23:46:47+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 389,
    "points_in_zone": 40,
    "first_point": {
        "ts": "2026-07-14T17:17:46+00:00",
        "lat": 31.52335169999999919809852144680917263031005859375,
        "lon": 32.25669669999999911169652477838099002838134765625
    },
    "last_point": {
        "ts": "2026-07-14T23:46:47+00:00",
        "lat": 31.5235033000000015590558177791535854339599609375,
        "lon": 32.25701670000000120808181236498057842254638671875
    }
}

Methodology: 2026.01.18

Sts🛰️✗ Black Sea Sanctioned Vessel Monitoring Zone Jul 14, 2026 16:51 UTC 75/100
Vessel A: DORIN (DORIN) CAMEROON
Vessel B: Savitri (SAVITRI) SIERRA LEONE
  • Minimum Distance: 35 meters
  • Average Distance: 45 meters
  • Duration: 39 minutes
  • Period: 2026-07-14T16:51:24+00:00 to 2026-07-14T17:30:25+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (DORIN and SAVITRI) maintained close proximity (min 35m, avg 45m) for 39 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Black Sea Sanctioned Vessel Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 35m, avg 45m
Duration5/25Duration 39 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±7m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Black Sea Sanctioned Vessel Monitoring Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-14T20:30:02.198939+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 613414203,
        "imo": 9290828,
        "name": "DORIN",
        "flag": "CAMEROON"
    },
    "vessel_b": {
        "mmsi": 667002039,
        "imo": 9289752,
        "name": "SAVITRI",
        "flag": "SIERRA LEONE"
    },
    "min_distance_m": 35.2999999999999971578290569595992565155029296875,
    "avg_distance_m": 44.89999999999999857891452847979962825775146484375,
    "distance_consistency_m": 7.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 39,
    "overlap_duration_s": 2341,
    "speed_a_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-07-14T16:51:24+00:00",
        "end": "2026-07-14T17:30:25+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 35m, avg 45m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 39 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b17m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Black Sea Sanctioned Vessel Monitoring Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (DORIN and SAVITRI) maintained close proximity (min 35m, avg 45m) for 39 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Black Sea Sanctioned Vessel Monitoring Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.52322819999999836682036402635276317596435546875,
            "lon": 32.2566532000000023572283680550754070281982421875
        },
        "time_window": {
            "start_ts": "2026-07-14T16:51:24+00:00",
            "end_ts": "2026-07-14T17:30:25+00:00"
        },
        "searched_at": "2026-07-14T20:30:02.198939+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Loiter Black Sea Sanctioned Vessel Monitoring Zone Jul 14, 2026 16:02 UTC 75.0%
  • Duration: 6h 31m
  • Radius: 39 meters
  • Data Points: 52 AIS positions
  • Centroid: 31.5233, 32.2568
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 38.7000000000000028421709430404007434844970703125,
    "duration_minutes": 391.8999999999999772626324556767940521240234375,
    "points": 52,
    "centroid": {
        "lat": 31.5233486249999970141288940794765949249267578125,
        "lon": 32.2567613423076835488245706073939800262451171875
    },
    "bbox": {
        "min_lat": 31.52307330000000007430571713484823703765869140625,
        "min_lon": 32.25647500000000178488335222937166690826416015625,
        "max_lat": 31.52367170000000129448380903340876102447509765625,
        "max_lon": 32.25699829999999934670995571650564670562744140625
    },
    "zone_id": "discovered_025"
}

Methodology: 2026.01.18

Zone Dwell Black Sea Sanctioned Vessel Monitoring Zone Jul 14, 2026 16:02 UTC 80.0%
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
  • Duration: 6h 31m
  • Data Points: 52 AIS positions
  • Period: 2026-07-14T16:02:55+00:00 to 2026-07-14T22:34:48+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 391.8999999999999772626324556767940521240234375,
    "points_in_zone": 52,
    "first_point": {
        "ts": "2026-07-14T16:02:55+00:00",
        "lat": 31.5234099999999983765519573353230953216552734375,
        "lon": 32.25681829999999905567165114916861057281494140625
    },
    "last_point": {
        "ts": "2026-07-14T22:34:48+00:00",
        "lat": 31.52351829999999921483322395943105220794677734375,
        "lon": 32.2569749999999970668795867823064327239990234375
    }
}

Methodology: 2026.01.18

Sts🛰️✗ Black Sea Sanctioned Vessel Monitoring Zone Jul 14, 2026 15:08 UTC 95/100
Vessel A: Savitri (SAVITRI) SIERRA LEONE
Vessel B: DORIN (DORIN) CAMEROON
  • Minimum Distance: 32 meters
  • Average Distance: 47 meters
  • Duration: 5h 2m
  • Period: 2026-07-14T15:08:07+00:00 to 2026-07-14T20:10:57+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (SAVITRI and DORIN) maintained close proximity (min 32m, avg 47m) for 303 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Black Sea Sanctioned Vessel Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 32m, avg 47m
Duration25/25Duration 303 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±9m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Black Sea Sanctioned Vessel Monitoring Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-14T22:45:07.167489+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 667002039,
        "imo": 9289752,
        "name": "SAVITRI",
        "flag": "SIERRA LEONE"
    },
    "vessel_b": {
        "mmsi": 613414203,
        "imo": 9290828,
        "name": "DORIN",
        "flag": "CAMEROON"
    },
    "min_distance_m": 32.10000000000000142108547152020037174224853515625,
    "avg_distance_m": 46.60000000000000142108547152020037174224853515625,
    "distance_consistency_m": 9.199999999999999289457264239899814128875732421875,
    "duration_minutes": 302.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 18170,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-14T15:08:07+00:00",
        "end": "2026-07-14T20:10:57+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 32m, avg 47m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 303 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b19m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Black Sea Sanctioned Vessel Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (SAVITRI and DORIN) maintained close proximity (min 32m, avg 47m) for 303 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Black Sea Sanctioned Vessel Monitoring Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.523205000000000808313416200689971446990966796875,
            "lon": 32.2565922000000000480213202536106109619140625
        },
        "time_window": {
            "start_ts": "2026-07-14T15:08:07+00:00",
            "end_ts": "2026-07-14T20:10:57+00:00"
        },
        "searched_at": "2026-07-14T22:45:07.167489+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Loiter Black Sea Sanctioned Vessel Monitoring Zone Jul 14, 2026 15:02 UTC 75.0%
  • Duration: 6h 37m
  • Radius: 39 meters
  • Data Points: 54 AIS positions
  • Centroid: 31.5233, 32.2568
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 39,
    "duration_minutes": 397.19999999999998863131622783839702606201171875,
    "points": 54,
    "centroid": {
        "lat": 31.523347812962956737692366004921495914459228515625,
        "lon": 32.25675552037035487273897160775959491729736328125
    },
    "bbox": {
        "min_lat": 31.52307330000000007430571713484823703765869140625,
        "min_lon": 32.25647500000000178488335222937166690826416015625,
        "max_lat": 31.52367170000000129448380903340876102447509765625,
        "max_lon": 32.25699829999999934670995571650564670562744140625
    },
    "zone_id": "discovered_025"
}

Methodology: 2026.01.18

Zone Dwell Black Sea Sanctioned Vessel Monitoring Zone Jul 14, 2026 15:02 UTC 80.0%
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
  • Duration: 6h 37m
  • Data Points: 54 AIS positions
  • Period: 2026-07-14T15:52:36+00:00 to 2026-07-14T22:29:48+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 397.19999999999998863131622783839702606201171875,
    "points_in_zone": 54,
    "first_point": {
        "ts": "2026-07-14T15:52:36+00:00",
        "lat": 31.52340170000000085792635218240320682525634765625,
        "lon": 32.25677329999999898291207500733435153961181640625
    },
    "last_point": {
        "ts": "2026-07-14T22:29:48+00:00",
        "lat": 31.5235933000000017045749700628221035003662109375,
        "lon": 32.25699829999999934670995571650564670562744140625
    }
}

Methodology: 2026.01.18

Sts Black Sea Sanctioned Vessel Monitoring Zone Jul 14, 2026 14:21 UTC 95/100
Vessel A: Savitri (SAVITRI) SIERRA LEONE
Vessel B: DORIN (DORIN) CAMEROON
  • Minimum Distance: 32 meters
  • Average Distance: 46 meters
  • Duration: 5h 16m
  • Period: 2026-07-14T14:54:48+00:00 to 2026-07-14T20:10:57+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (SAVITRI and DORIN) maintained close proximity (min 32m, avg 46m) for 316 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Black Sea Sanctioned Vessel Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 32m, avg 46m
Duration25/25Duration 316 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±8m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Black Sea Sanctioned Vessel Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 667002039,
        "imo": 9289752,
        "name": "SAVITRI",
        "flag": "SIERRA LEONE"
    },
    "vessel_b": {
        "mmsi": 613414203,
        "imo": 9290828,
        "name": "DORIN",
        "flag": "CAMEROON"
    },
    "min_distance_m": 32.10000000000000142108547152020037174224853515625,
    "avg_distance_m": 46.39999999999999857891452847979962825775146484375,
    "distance_consistency_m": 7.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 316.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 18969,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-14T14:54:48+00:00",
        "end": "2026-07-14T20:10:57+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 32m, avg 46m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 316 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b18m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Black Sea Sanctioned Vessel Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (SAVITRI and DORIN) maintained close proximity (min 32m, avg 46m) for 316 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Black Sea Sanctioned Vessel Monitoring Zone, a known STS activity area."
    }
}

Methodology: 2026.01.18

Loiter Black Sea Sanctioned Vessel Monitoring Zone Jul 14, 2026 14:01 UTC 75.0%
  • Duration: 6h 36m
  • Radius: 29 meters
  • Data Points: 63 AIS positions
  • Centroid: 31.5233, 32.2567
  • Zone: Black Sea Sanctioned Vessel Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 29.10000000000000142108547152020037174224853515625,
    "duration_minutes": 396,
    "points": 63,
    "centroid": {
        "lat": 31.52333138095239206677433685399591922760009765625,
        "lon": 32.2567337301587286901849438436329364776611328125
    },
    "bbox": {
        "min_lat": 31.52307330000000007430571713484823703765869140625,
        "min_lon": 32.25647500000000178488335222937166690826416015625,
        "max_lat": 31.52349170000000100344550446607172489166259765625,
        "max_lon": 32.25690670000000181971699930727481842041015625
    },
    "zone_id": "discovered_025"
}

Methodology: 2026.01.18

Source snapshot

SanctionerAs ofEntity ID
🇬🇧 UK2025-09-299290828

We mirror official lists; always verify at the source.

Sanctioned on the same day

  • ADHARA · IMO 9353125 🇦🇺 AU🇨🇦 CA🇪🇺 EU🇬🇧 UK
  • AKAR WEST · IMO 9258167 🇦🇺 AU🇨🇦 CA🇪🇺 EU🇳🇿 NZ🇬🇧 UK
  • ATLANTICOS · IMO 9282986 🇦🇺 AU🇨🇦 CA🇪🇺 EU🇳🇿 NZ🇬🇧 UK
  • BELOMOR · IMO 9384435 🇦🇺 AU🇨🇦 CA🇪🇺 EU🇳🇿 NZ🇬🇧 UK
  • Blue · IMO 9236353 🇦🇺 AU🇨🇦 CA🇪🇺 EU🇳🇿 NZ🇬🇧 UK
  • Blue Talu · IMO 9334557 🇦🇺 AU🇨🇦 CA🇪🇺 EU🇬🇧 UK
  • C VIKING · IMO 9261657 🇦🇺 AU🇨🇦 CA🇪🇺 EU🇳🇿 NZ🇬🇧 UK
  • CAVELA · IMO 9259733 🇦🇺 AU🇨🇦 CA🇪🇺 EU🇬🇧 UK