KOCATEPE

IMO 9274666

Vessel information

Vessel Name KOCATEPE
IMO Number 9274666
MMSI 352003673
Vessel Type Tanker
Flag 🇵🇦 Panama
Call Sign 3E4795
Length 186 m
Beam 31 m

Detected Events (100)

Zone Dwell Laconian Gulf STS Zone
Aug 25, 2026 02:40 UTC 80.0% ▼
  • Zone: Laconian Gulf STS Zone
  • Duration: 1h 7m
  • Data Points: 11 AIS positions
  • Period: 2026-08-25T02:40:50+00:00 to 2026-08-25T03:48:01+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_laconian_gulf",
    "zone_name": "Laconian Gulf STS Zone",
    "dwell_minutes": 67.2000000000000028421709430404007434844970703125,
    "points_in_zone": 11,
    "first_point": {
        "ts": "2026-08-25T02:40:50+00:00",
        "lat": 36.60769669999999820220182300545275211334228515625,
        "lon": 23.499848300000000023146640160121023654937744140625
    },
    "last_point": {
        "ts": "2026-08-25T03:48:01+00:00",
        "lat": 36.40533669999999943911461741663515567779541015625,
        "lon": 23.386603300000000871250449563376605510711669921875
    }
}
Methodology: 2026.01.18
Zone Dwell South Aegean Monitoring Zone
Aug 24, 2026 22:01 UTC 80.0% ▼
  • Zone: South Aegean Monitoring Zone
  • Duration: 1h 13m
  • Data Points: 6 AIS positions
  • Period: 2026-08-24T22:01:59+00:00 to 2026-08-24T23:15:19+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_034",
    "zone_name": "South Aegean Monitoring Zone",
    "dwell_minutes": 73.2999999999999971578290569595992565155029296875,
    "points_in_zone": 6,
    "first_point": {
        "ts": "2026-08-24T22:01:59+00:00",
        "lat": 37.4174383000000005949914338998496532440185546875,
        "lon": 23.69863000000000141653799801133573055267333984375
    },
    "last_point": {
        "ts": "2026-08-24T23:15:19+00:00",
        "lat": 37.200123300000001336229615844786167144775390625,
        "lon": 23.676501699999999317469701054506003856658935546875
    }
}
Methodology: 2026.01.18
Zone Dwell South Aegean Monitoring Zone
Aug 24, 2026 21:45 UTC 80.0% ▼
  • Zone: South Aegean Monitoring Zone
  • Duration: 1h 30m
  • Data Points: 14 AIS positions
  • Period: 2026-08-24T21:45:21+00:00 to 2026-08-24T23:15:19+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_034",
    "zone_name": "South Aegean Monitoring Zone",
    "dwell_minutes": 90,
    "points_in_zone": 14,
    "first_point": {
        "ts": "2026-08-24T21:45:21+00:00",
        "lat": 37.46940500000000184854798135347664356231689453125,
        "lon": 23.707041700000001327452991972677409648895263671875
    },
    "last_point": {
        "ts": "2026-08-24T23:15:19+00:00",
        "lat": 37.200123300000001336229615844786167144775390625,
        "lon": 23.676501699999999317469701054506003856658935546875
    }
}
Methodology: 2026.01.18
Zone Dwell North Sea Monitoring Zone
Jul 26, 2026 22:00 UTC 80.0% ▼
  • Zone: North Sea Monitoring Zone
  • Duration: 2h 5m
  • Data Points: 13 AIS positions
  • Period: 2026-07-26T22:00:45+00:00 to 2026-07-27T00:06:25+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_122",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 125.7000000000000028421709430404007434844970703125,
    "points_in_zone": 13,
    "first_point": {
        "ts": "2026-07-26T22:00:45+00:00",
        "lat": 37.70466830000000157951944856904447078704833984375,
        "lon": 24.2229616999999990412106853909790515899658203125
    },
    "last_point": {
        "ts": "2026-07-27T00:06:25+00:00",
        "lat": 37.61598169999999896617737249471247196197509765625,
        "lon": 24.0041149999999987585397320799529552459716796875
    }
}
Methodology: 2026.01.18
Zone Dwell North Sea Monitoring Zone
Jul 26, 2026 21:00 UTC 80.0% ▼
  • Zone: North Sea Monitoring Zone
  • Duration: 3h 6m
  • Data Points: 27 AIS positions
  • Period: 2026-07-26T21:00:13+00:00 to 2026-07-27T00:06:25+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_122",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 186.19999999999998863131622783839702606201171875,
    "points_in_zone": 27,
    "first_point": {
        "ts": "2026-07-26T21:00:13+00:00",
        "lat": 37.7665549999999967667463351972401142120361328125,
        "lon": 24.323646700000001175112629425711929798126220703125
    },
    "last_point": {
        "ts": "2026-07-27T00:06:25+00:00",
        "lat": 37.61598169999999896617737249471247196197509765625,
        "lon": 24.0041149999999987585397320799529552459716796875
    }
}
Methodology: 2026.01.18
Zone Dwell North Sea Monitoring Zone
Jul 26, 2026 20:02 UTC 80.0% ▼
  • Zone: North Sea Monitoring Zone
  • Duration: 4h 4m
  • Data Points: 45 AIS positions
  • Period: 2026-07-26T20:02:14+00:00 to 2026-07-27T00:06:25+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_122",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 244.19999999999998863131622783839702606201171875,
    "points_in_zone": 45,
    "first_point": {
        "ts": "2026-07-26T20:02:14+00:00",
        "lat": 37.83195669999999921628841548226773738861083984375,
        "lon": 24.4233033000000006040863809175789356231689453125
    },
    "last_point": {
        "ts": "2026-07-27T00:06:25+00:00",
        "lat": 37.61598169999999896617737249471247196197509765625,
        "lon": 24.0041149999999987585397320799529552459716796875
    }
}
Methodology: 2026.01.18
Zone Dwell North Sea Monitoring Zone
Jul 26, 2026 19:10 UTC 80.0% ▼
  • Zone: North Sea Monitoring Zone
  • Duration: 4h 56m
  • Data Points: 61 AIS positions
  • Period: 2026-07-26T19:10:05+00:00 to 2026-07-27T00:06:25+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_122",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 296.30000000000001136868377216160297393798828125,
    "points_in_zone": 61,
    "first_point": {
        "ts": "2026-07-26T19:10:05+00:00",
        "lat": 37.88978670000000192885636352002620697021484375,
        "lon": 24.506054999999999921556081972084939479827880859375
    },
    "last_point": {
        "ts": "2026-07-27T00:06:25+00:00",
        "lat": 37.61598169999999896617737249471247196197509765625,
        "lon": 24.0041149999999987585397320799529552459716796875
    }
}
Methodology: 2026.01.18
Zone Dwell North Sea Monitoring Zone
Jul 26, 2026 18:26 UTC 80.0% ▼
  • Zone: North Sea Monitoring Zone
  • Duration: 5h 39m
  • Data Points: 64 AIS positions
  • Period: 2026-07-26T18:26:53+00:00 to 2026-07-27T00:06:25+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_122",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 339.5,
    "points_in_zone": 64,
    "first_point": {
        "ts": "2026-07-26T18:26:53+00:00",
        "lat": 37.93979329999999805522747919894754886627197265625,
        "lon": 24.569873300000001137277649831958115100860595703125
    },
    "last_point": {
        "ts": "2026-07-27T00:06:25+00:00",
        "lat": 37.61598169999999896617737249471247196197509765625,
        "lon": 24.0041149999999987585397320799529552459716796875
    }
}
Methodology: 2026.01.18
Zone Dwell North Sea Monitoring Zone
Jul 18, 2026 23:06 UTC 80.0% ▼
  • Zone: North Sea Monitoring Zone
  • Duration: 1h 32m
  • Data Points: 24 AIS positions
  • Period: 2026-07-18T23:06:59+00:00 to 2026-07-19T00:39:00+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_122",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 92,
    "points_in_zone": 24,
    "first_point": {
        "ts": "2026-07-18T23:06:59+00:00",
        "lat": 37.86173500000000302634362014941871166229248046875,
        "lon": 24.453356700000000500949681736528873443603515625
    },
    "last_point": {
        "ts": "2026-07-19T00:39:00+00:00",
        "lat": 37.6680233000000015408659237436950206756591796875,
        "lon": 24.184958300000001685248207650147378444671630859375
    }
}
Methodology: 2026.01.18
Zone Dwell North Sea Monitoring Zone
Jul 18, 2026 22:26 UTC 80.0% ▼
  • Zone: North Sea Monitoring Zone
  • Duration: 2h 12m
  • Data Points: 30 AIS positions
  • Period: 2026-07-18T22:26:30+00:00 to 2026-07-19T00:39:00+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_122",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 132.5,
    "points_in_zone": 30,
    "first_point": {
        "ts": "2026-07-18T22:26:30+00:00",
        "lat": 37.94000170000000338177414960227906703948974609375,
        "lon": 24.572103299999998426983438548631966114044189453125
    },
    "last_point": {
        "ts": "2026-07-19T00:39:00+00:00",
        "lat": 37.6680233000000015408659237436950206756591796875,
        "lon": 24.184958300000001685248207650147378444671630859375
    }
}
Methodology: 2026.01.18
Zone Dwell North Sea Monitoring Zone
Jul 13, 2026 15:01 UTC 80.0% ▼
  • Zone: North Sea Monitoring Zone
  • Duration: 1h 35m
  • Data Points: 25 AIS positions
  • Period: 2026-07-13T15:01:19+00:00 to 2026-07-13T16:36:19+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_122",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 95,
    "points_in_zone": 25,
    "first_point": {
        "ts": "2026-07-13T15:01:19+00:00",
        "lat": 37.751998299999996788756106980144977569580078125,
        "lon": 24.349921699999999447072696057148277759552001953125
    },
    "last_point": {
        "ts": "2026-07-13T16:36:19+00:00",
        "lat": 37.939216700000002902015694417059421539306640625,
        "lon": 24.590446700000001101216184906661510467529296875
    }
}
Methodology: 2026.01.18
Zone Dwell North Sea Monitoring Zone
Jul 13, 2026 14:00 UTC 80.0% ▼
  • Zone: North Sea Monitoring Zone
  • Duration: 2h 35m
  • Data Points: 40 AIS positions
  • Period: 2026-07-13T14:00:59+00:00 to 2026-07-13T16:36:19+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_122",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 155.30000000000001136868377216160297393798828125,
    "points_in_zone": 40,
    "first_point": {
        "ts": "2026-07-13T14:00:59+00:00",
        "lat": 37.64427830000000341215127264149487018585205078125,
        "lon": 24.1825682999999997946360963396728038787841796875
    },
    "last_point": {
        "ts": "2026-07-13T16:36:19+00:00",
        "lat": 37.939216700000002902015694417059421539306640625,
        "lon": 24.590446700000001101216184906661510467529296875
    }
}
Methodology: 2026.01.18
Zone Dwell North Sea Monitoring Zone
Jul 13, 2026 13:11 UTC 80.0% ▼
  • Zone: North Sea Monitoring Zone
  • Duration: 3h 24m
  • Data Points: 48 AIS positions
  • Period: 2026-07-13T13:11:59+00:00 to 2026-07-13T16:36:19+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_122",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 204.30000000000001136868377216160297393798828125,
    "points_in_zone": 48,
    "first_point": {
        "ts": "2026-07-13T13:11:59+00:00",
        "lat": 37.5892266999999975496393744833767414093017578125,
        "lon": 24.018795000000000783302311901934444904327392578125
    },
    "last_point": {
        "ts": "2026-07-13T16:36:19+00:00",
        "lat": 37.939216700000002902015694417059421539306640625,
        "lon": 24.590446700000001101216184906661510467529296875
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Black Sea Sanctioned Vessel Zone
Jul 10, 2026 14:36 UTC 80.0% ▼
  • Zone: Southern Black Sea Sanctioned Vessel Zone
  • Duration: 1h 7m
  • Data Points: 18 AIS positions
  • Period: 2026-07-10T14:36:10+00:00 to 2026-07-10T15:43:21+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_035",
    "zone_name": "Southern Black Sea Sanctioned Vessel Zone",
    "dwell_minutes": 67.2000000000000028421709430404007434844970703125,
    "points_in_zone": 18,
    "first_point": {
        "ts": "2026-07-10T14:36:10+00:00",
        "lat": 37.2789982999999978119376464746892452239990234375,
        "lon": 24.18331500000000033878677641041576862335205078125
    },
    "last_point": {
        "ts": "2026-07-10T15:43:21+00:00",
        "lat": 37.4696832999999998037310433574020862579345703125,
        "lon": 24.001654999999999517967808060348033905029296875
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_025
Jul 8, 2026 21:23 UTC 80.0% ▼
  • Zone: discovered_025
  • Duration: 1h 13m
  • Data Points: 9 AIS positions
  • Period: 2026-07-08T21:23:40+00:00 to 2026-07-08T22:37:31+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 73.7999999999999971578290569595992565155029296875,
    "points_in_zone": 9,
    "first_point": {
        "ts": "2026-07-08T21:23:40+00:00",
        "lat": 32.10106329999999985602698870934545993804931640625,
        "lon": 31.46080500000000057525539887137711048126220703125
    },
    "last_point": {
        "ts": "2026-07-08T22:37:31+00:00",
        "lat": 32.2354567000000002963133738376200199127197265625,
        "lon": 31.25821499999999986130205797962844371795654296875
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_025
Jul 8, 2026 20:43 UTC 80.0% ▼
  • Zone: discovered_025
  • Duration: 1h 54m
  • Data Points: 10 AIS positions
  • Period: 2026-07-08T20:43:10+00:00 to 2026-07-08T22:37:31+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 114.2999999999999971578290569595992565155029296875,
    "points_in_zone": 10,
    "first_point": {
        "ts": "2026-07-08T20:43:10+00:00",
        "lat": 32.02604500000000342652128892950713634490966796875,
        "lon": 31.57152669999999972105797496624290943145751953125
    },
    "last_point": {
        "ts": "2026-07-08T22:37:31+00:00",
        "lat": 32.2354567000000002963133738376200199127197265625,
        "lon": 31.25821499999999986130205797962844371795654296875
    }
}
Methodology: 2026.01.18
Ais Gap🛰️✗ Western Black Sea Surveillance Zone
Jul 8, 2026 15:02 UTC 70.0% ▼
  • Gap Duration: 5h 41m
  • Last Seen: 2026-07-08T15:02:05+00:00 at 31.3850, 32.3713 (Zone: Western Black Sea Surveillance Zone)
  • Next Seen: 2026-07-08T20:43:10+00:00 at 32.0260, 31.5715

🛰️ 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: 2026-07-08T21:00:02.246751+00:00

Show Raw Evidence JSON
{
    "gap_minutes": 341.1000000000000227373675443232059478759765625,
    "last_seen": {
        "ts": "2026-07-08T15:02:05+00:00",
        "lat": 31.38497170000000124900907394476234912872314453125,
        "lon": 32.37134499999999803776518092490732669830322265625,
        "sog": 10.0999999999999996447286321199499070644378662109375,
        "zone_id": "discovered_156"
    },
    "next_seen": {
        "ts": "2026-07-08T20:43:10+00:00",
        "lat": 32.02604500000000342652128892950713634490966796875,
        "lon": 31.57152669999999972105797496624290943145751953125,
        "zone_ids": [
            "discovered_025"
        ]
    },
    "gap_enrichment": {
        "status": "not_found",
        "corridor": {
            "start": {
                "lat": 31.38497170000000124900907394476234912872314453125,
                "lon": 32.37134499999999803776518092490732669830322265625,
                "ts": "2026-07-08T15:02:05+00:00"
            },
            "end": {
                "lat": 32.02604500000000342652128892950713634490966796875,
                "lon": 31.57152669999999972105797496624290943145751953125,
                "ts": "2026-07-08T20:43:10+00:00"
            },
            "bbox": {
                "min_lat": 31.204792000000001195303411805070936679840087890625,
                "min_lon": 31.359739999999998616431184927932918071746826171875,
                "max_lat": 32.2062250000000034333424991928040981292724609375,
                "max_lon": 32.58313199999999909550751908682286739349365234375
            },
            "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": "2026-07-08T21:00:02.246751+00:00"
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 2, 2026 13:05 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 1h 52m
  • Data Points: 18 AIS positions
  • Period: 2026-04-02T13:05:48+00:00 to 2026-04-02T14:58:03+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 112.2000000000000028421709430404007434844970703125,
    "points_in_zone": 18,
    "first_point": {
        "ts": "2026-04-02T13:05:48+00:00",
        "lat": 34.70820669999999807942003826610743999481201171875,
        "lon": 33.31990499999999855162968742661178112030029296875
    },
    "last_point": {
        "ts": "2026-04-02T14:58:03+00:00",
        "lat": 34.67617169999999759966158308088779449462890625,
        "lon": 33.31081499999999806505002197809517383575439453125
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 2, 2026 12:23 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 2h 34m
  • Data Points: 28 AIS positions
  • Period: 2026-04-02T12:23:49+00:00 to 2026-04-02T14:58:03+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 154.19999999999998863131622783839702606201171875,
    "points_in_zone": 28,
    "first_point": {
        "ts": "2026-04-02T12:23:49+00:00",
        "lat": 34.708218299999998635030351579189300537109375,
        "lon": 33.3198967000000010330040822736918926239013671875
    },
    "last_point": {
        "ts": "2026-04-02T14:58:03+00:00",
        "lat": 34.67617169999999759966158308088779449462890625,
        "lon": 33.31081499999999806505002197809517383575439453125
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Istanbul Black Sea Surveillance Zone
Apr 2, 2026 11:09 UTC 87/100 ▼
Vessel A: IMO 9396672 (FAIR STAR) LIBERIA
Vessel B: IMO 9274666 (KOCATEPE) Panama
  • Minimum Distance: 88 meters
  • Average Distance: 105 meters
  • Duration: 1h 30m
  • Period: 2026-04-02T11:09:44+00:00 to 2026-04-02T12:40:32+00:00
  • Vessel A Avg Speed: 0.3 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 87/100

High-confidence STS candidate. Two tankers (FAIR STAR and KOCATEPE) maintained close proximity (min 88m, avg 105m) for 91 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 88m, avg 105m
Duration20/25Duration 91 minutes
Speed Stability17/20both nearly stationary; stable speeds
Distance Consistency15/15Distance variance ±28m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-04-02T17:45:05.030660+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636022971,
        "imo": 9396672,
        "name": "FAIR STAR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "min_distance_m": 87.7000000000000028421709430404007434844970703125,
    "avg_distance_m": 104.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 28,
    "duration_minutes": 90.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 5448,
    "speed_a_avg": 0.330000000000000015543122344752191565930843353271484375,
    "speed_a_std": 0.450000000000000011102230246251565404236316680908203125,
    "speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.330000000000000015543122344752191565930843353271484375,
            "max_sog": 1.5
        },
        "vessel_b": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-04-02T11:09:44+00:00",
        "end": "2026-04-02T12:40:32+00:00"
    },
    "points_count": {
        "vessel_a": 10,
        "vessel_b": 10
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 87,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 88m, avg 105m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 91 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b128m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (FAIR STAR and KOCATEPE) maintained close proximity (min 88m, avg 105m) for 91 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.7078944000000007008566171862185001373291015625,
            "lon": 33.32027649999999852070686756633222103118896484375
        },
        "time_window": {
            "start_ts": "2026-04-02T11:09:44+00:00",
            "end_ts": "2026-04-02T12:40:32+00:00"
        },
        "searched_at": "2026-04-02T17:45:05.030660+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 2, 2026 11:08 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 3h 49m
  • Data Points: 30 AIS positions
  • Period: 2026-04-02T11:08:47+00:00 to 2026-04-02T14:58:03+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 229.30000000000001136868377216160297393798828125,
    "points_in_zone": 30,
    "first_point": {
        "ts": "2026-04-02T11:08:47+00:00",
        "lat": 34.70821000000000111640474642626941204071044921875,
        "lon": 33.3198849999999993087840266525745391845703125
    },
    "last_point": {
        "ts": "2026-04-02T14:58:03+00:00",
        "lat": 34.67617169999999759966158308088779449462890625,
        "lon": 33.31081499999999806505002197809517383575439453125
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 2, 2026 11:08 UTC 75.0% ▼
  • Duration: 2 hours
  • Radius: 2 meters
  • Data Points: 14 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 120,
    "points": 14,
    "centroid": {
        "lat": 34.70821582857143283717960002832114696502685546875,
        "lon": 33.31989692142857251155874109826982021331787109375
    },
    "bbox": {
        "min_lat": 34.70820499999999952933649183250963687896728515625,
        "min_lon": 33.31988170000000337722667609341442584991455078125,
        "max_lat": 34.708224999999998772182152606546878814697265625,
        "max_lon": 33.31991330000000317568265018053352832794189453125
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Sts🛰️✗ Istanbul Black Sea Surveillance Zone
Apr 2, 2026 10:02 UTC 86/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9396672 (FAIR STAR) LIBERIA
  • Minimum Distance: 86 meters
  • Average Distance: 104 meters
  • Duration: 2h 45m
  • Period: 2026-04-02T10:02:47+00:00 to 2026-04-02T12:47:53+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.3 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 86/100

High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 86m, avg 104m) for 165 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 86m, avg 104m
Duration25/25Duration 165 minutes
Speed Stability14/20both nearly stationary; somewhat variable speeds
Distance Consistency12/15Distance variance ±31m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-04-02T16:30:01.902734+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636022971,
        "imo": 9396672,
        "name": "FAIR STAR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 85.5,
    "avg_distance_m": 104.099999999999994315658113919198513031005859375,
    "distance_consistency_m": 30.89999999999999857891452847979962825775146484375,
    "duration_minutes": 165.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 9906,
    "speed_a_avg": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0.320000000000000006661338147750939242541790008544921875,
    "speed_b_std": 0.5100000000000000088817841970012523233890533447265625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.11000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.320000000000000006661338147750939242541790008544921875,
            "max_sog": 1.5
        }
    },
    "time_window": {
        "start": "2026-04-02T10:02:47+00:00",
        "end": "2026-04-02T12:47:53+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 86,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 86m, avg 104m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 165 minutes"
            },
            "speed_stability": {
                "score": 14,
                "max": 20,
                "detail": "both nearly stationary; somewhat variable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b131m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 86m, avg 104m) for 165 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.7078948999999994384779711253941059112548828125,
            "lon": 33.3202758999999986144757713191211223602294921875
        },
        "time_window": {
            "start_ts": "2026-04-02T10:02:47+00:00",
            "end_ts": "2026-04-02T12:47:53+00:00"
        },
        "searched_at": "2026-04-02T16:30:01.902734+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 2, 2026 10:02 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 4h 55m
  • Data Points: 36 AIS positions
  • Period: 2026-04-02T10:02:47+00:00 to 2026-04-02T14:58:03+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 295.30000000000001136868377216160297393798828125,
    "points_in_zone": 36,
    "first_point": {
        "ts": "2026-04-02T10:02:47+00:00",
        "lat": 34.70820830000000256632119999267160892486572265625,
        "lon": 33.31990499999999855162968742661178112030029296875
    },
    "last_point": {
        "ts": "2026-04-02T14:58:03+00:00",
        "lat": 34.67617169999999759966158308088779449462890625,
        "lon": 33.31081499999999806505002197809517383575439453125
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 2, 2026 10:02 UTC 75.0% ▼
  • Duration: 3h 6m
  • Radius: 2 meters
  • Data Points: 20 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 1.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 186,
    "points": 20,
    "centroid": {
        "lat": 34.7082146599999958880289341323077678680419921875,
        "lon": 33.31989734499999400441083707846701145172119140625
    },
    "bbox": {
        "min_lat": 34.70820499999999952933649183250963687896728515625,
        "min_lon": 33.31988170000000337722667609341442584991455078125,
        "max_lat": 34.708224999999998772182152606546878814697265625,
        "max_lon": 33.31991330000000317568265018053352832794189453125
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 2, 2026 09:07 UTC 70/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9383962 (EASTERLY JUPITER) Marshall Is
  • Minimum Distance: 328 meters
  • Average Distance: 332 meters
  • Duration: 1 hours
  • Period: 2026-04-02T09:20:49+00:00 to 2026-04-02T10:20:49+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.5 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (KOCATEPE and EASTERLY JUPITER) maintained close proximity (min 328m, avg 332m) for 60 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 328m, avg 332m
Duration15/25Duration 60 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 538010209,
        "imo": 9383962,
        "name": "EASTERLY JUPITER",
        "flag": "Marshall Is"
    },
    "min_distance_m": 328.3999999999999772626324556767940521240234375,
    "avg_distance_m": 331.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 2.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 60,
    "overlap_duration_s": 3600,
    "speed_a_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_avg": 0.450000000000000011102230246251565404236316680908203125,
    "speed_b_std": 0.25,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.450000000000000011102230246251565404236316680908203125,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        }
    },
    "time_window": {
        "start": "2026-04-02T09:20:49+00:00",
        "end": "2026-04-02T10:20:49+00:00"
    },
    "points_count": {
        "vessel_a": 11,
        "vessel_b": 11
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 328m, avg 332m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 60 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (KOCATEPE and EASTERLY JUPITER) maintained close proximity (min 328m, avg 332m) for 60 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 2, 2026 09:06 UTC 92/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9396672 (FAIR STAR) LIBERIA
  • Minimum Distance: 85 meters
  • Average Distance: 98 meters
  • Duration: 3h 27m
  • Period: 2026-04-02T09:20:49+00:00 to 2026-04-02T12:47:53+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.3 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 92/100

High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 85m, avg 98m) for 207 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 85m, avg 98m
Duration25/25Duration 207 minutes
Speed Stability17/20both nearly stationary; stable speeds
Distance Consistency15/15Distance variance ±27m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636022971,
        "imo": 9396672,
        "name": "FAIR STAR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 84.599999999999994315658113919198513031005859375,
    "avg_distance_m": 98.400000000000005684341886080801486968994140625,
    "distance_consistency_m": 26.60000000000000142108547152020037174224853515625,
    "duration_minutes": 207.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 12424,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0.25,
    "speed_b_std": 0.429999999999999993338661852249060757458209991455078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.25,
            "max_sog": 1.5
        }
    },
    "time_window": {
        "start": "2026-04-02T09:20:49+00:00",
        "end": "2026-04-02T12:47:53+00:00"
    },
    "points_count": {
        "vessel_a": 22,
        "vessel_b": 22
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 92,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 85m, avg 98m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 207 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b127m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 85m, avg 98m) for 207 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 2, 2026 09:02 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 5h 55m
  • Data Points: 47 AIS positions
  • Period: 2026-04-02T09:02:48+00:00 to 2026-04-02T14:58:03+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 355.19999999999998863131622783839702606201171875,
    "points_in_zone": 47,
    "first_point": {
        "ts": "2026-04-02T09:02:48+00:00",
        "lat": 34.70819000000000187355908565223217010498046875,
        "lon": 33.31987670000000179015842149965465068817138671875
    },
    "last_point": {
        "ts": "2026-04-02T14:58:03+00:00",
        "lat": 34.67617169999999759966158308088779449462890625,
        "lon": 33.31081499999999806505002197809517383575439453125
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 2, 2026 09:02 UTC 75.0% ▼
  • Duration: 4h 6m
  • Radius: 3 meters
  • Data Points: 31 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 2.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 246,
    "points": 31,
    "centroid": {
        "lat": 34.70820849032256916188998729921877384185791015625,
        "lon": 33.31989785806450754535035230219364166259765625
    },
    "bbox": {
        "min_lat": 34.70818669999999883657437749207019805908203125,
        "min_lon": 33.31987670000000179015842149965465068817138671875,
        "max_lat": 34.708224999999998772182152606546878814697265625,
        "max_lon": 33.31991500000000172576619661413133144378662109375
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Sts🛰️✗ Istanbul Black Sea Surveillance Zone
Apr 2, 2026 08:08 UTC 80/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9383962 (EASTERLY JUPITER) Marshall Is
  • Minimum Distance: 328 meters
  • Average Distance: 332 meters
  • Duration: 2h 12m
  • Period: 2026-04-02T08:08:50+00:00 to 2026-04-02T10:20:49+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.3 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (KOCATEPE and EASTERLY JUPITER) maintained close proximity (min 328m, avg 332m) for 132 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 328m, avg 332m
Duration25/25Duration 132 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-04-02T14:45:10.445955+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 538010209,
        "imo": 9383962,
        "name": "EASTERLY JUPITER",
        "flag": "Marshall Is"
    },
    "min_distance_m": 328.1000000000000227373675443232059478759765625,
    "avg_distance_m": 331.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 2,
    "duration_minutes": 132,
    "overlap_duration_s": 7919,
    "speed_a_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_a_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_b_avg": 0.340000000000000024424906541753443889319896697998046875,
    "speed_b_std": 0.200000000000000011102230246251565404236316680908203125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.340000000000000024424906541753443889319896697998046875,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        }
    },
    "time_window": {
        "start": "2026-04-02T08:08:50+00:00",
        "end": "2026-04-02T10:20:49+00:00"
    },
    "points_count": {
        "vessel_a": 28,
        "vessel_b": 28
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 328m, avg 332m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 132 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and EASTERLY JUPITER) maintained close proximity (min 328m, avg 332m) for 132 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70892140000000125610313261859118938446044921875,
            "lon": 33.3214779999999990423020790331065654754638671875
        },
        "time_window": {
            "start_ts": "2026-04-02T08:08:50+00:00",
            "end_ts": "2026-04-02T10:20:49+00:00"
        },
        "searched_at": "2026-04-02T14:45:10.445955+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Istanbul Black Sea Surveillance Zone
Apr 2, 2026 08:05 UTC 92/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9396672 (FAIR STAR) LIBERIA
  • Minimum Distance: 85 meters
  • Average Distance: 94 meters
  • Duration: 4h 42m
  • Period: 2026-04-02T08:05:50+00:00 to 2026-04-02T12:47:53+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 92/100

High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 85m, avg 94m) for 282 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 85m, avg 94m
Duration25/25Duration 282 minutes
Speed Stability17/20both nearly stationary; stable speeds
Distance Consistency15/15Distance variance ±20m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-04-02T14:45:07.607626+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636022971,
        "imo": 9396672,
        "name": "FAIR STAR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 84.599999999999994315658113919198513031005859375,
    "avg_distance_m": 93.599999999999994315658113919198513031005859375,
    "distance_consistency_m": 20.300000000000000710542735760100185871124267578125,
    "duration_minutes": 282.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 16923,
    "speed_a_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0.190000000000000002220446049250313080847263336181640625,
    "speed_b_std": 0.330000000000000015543122344752191565930843353271484375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.190000000000000002220446049250313080847263336181640625,
            "max_sog": 1.5
        }
    },
    "time_window": {
        "start": "2026-04-02T08:05:50+00:00",
        "end": "2026-04-02T12:47:53+00:00"
    },
    "points_count": {
        "vessel_a": 40,
        "vessel_b": 40
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 92,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 85m, avg 94m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 282 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b120m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 85m, avg 94m) for 282 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70794819999999702986315242014825344085693359375,
            "lon": 33.32028869999999898254827712662518024444580078125
        },
        "time_window": {
            "start_ts": "2026-04-02T08:05:50+00:00",
            "end_ts": "2026-04-02T12:47:53+00:00"
        },
        "searched_at": "2026-04-02T14:45:07.607626+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 2, 2026 08:02 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 6h 37m
  • Data Points: 57 AIS positions
  • Period: 2026-04-02T08:20:49+00:00 to 2026-04-02T14:58:03+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 397.19999999999998863131622783839702606201171875,
    "points_in_zone": 57,
    "first_point": {
        "ts": "2026-04-02T08:20:49+00:00",
        "lat": 34.70819829999999939218469080515205860137939453125,
        "lon": 33.3198967000000010330040822736918926239013671875
    },
    "last_point": {
        "ts": "2026-04-02T14:58:03+00:00",
        "lat": 34.67617169999999759966158308088779449462890625,
        "lon": 33.31081499999999806505002197809517383575439453125
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 2, 2026 08:02 UTC 75.0% ▼
  • Duration: 5h 6m
  • Radius: 3 meters
  • Data Points: 46 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 306,
    "points": 46,
    "centroid": {
        "lat": 34.70820177608695900062230066396296024322509765625,
        "lon": 33.319896058695661622550687752664089202880859375
    },
    "bbox": {
        "min_lat": 34.70817329999999856227077543735504150390625,
        "min_lon": 33.31987670000000179015842149965465068817138671875,
        "max_lat": 34.708224999999998772182152606546878814697265625,
        "max_lon": 33.31991500000000172576619661413133144378662109375
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 2, 2026 07:13 UTC 80/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9383962 (EASTERLY JUPITER) Marshall Is
  • Minimum Distance: 328 meters
  • Average Distance: 332 meters
  • Duration: 3h 6m
  • Period: 2026-04-02T07:14:49+00:00 to 2026-04-02T10:20:49+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.3 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (KOCATEPE and EASTERLY JUPITER) maintained close proximity (min 328m, avg 332m) for 186 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 328m, avg 332m
Duration25/25Duration 186 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 538010209,
        "imo": 9383962,
        "name": "EASTERLY JUPITER",
        "flag": "Marshall Is"
    },
    "min_distance_m": 328.1000000000000227373675443232059478759765625,
    "avg_distance_m": 331.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 2,
    "duration_minutes": 186,
    "overlap_duration_s": 11160,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_b_avg": 0.289999999999999980015985556747182272374629974365234375,
    "speed_b_std": 0.190000000000000002220446049250313080847263336181640625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.289999999999999980015985556747182272374629974365234375,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        }
    },
    "time_window": {
        "start": "2026-04-02T07:14:49+00:00",
        "end": "2026-04-02T10:20:49+00:00"
    },
    "points_count": {
        "vessel_a": 38,
        "vessel_b": 38
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 328m, avg 332m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 186 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and EASTERLY JUPITER) maintained close proximity (min 328m, avg 332m) for 186 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 2, 2026 07:09 UTC 95/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9396672 (FAIR STAR) LIBERIA
  • Minimum Distance: 85 meters
  • Average Distance: 93 meters
  • Duration: 5h 33m
  • Period: 2026-04-02T07:14:49+00:00 to 2026-04-02T12:47:53+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 85m, avg 92m) for 333 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 85m, avg 92m
Duration25/25Duration 333 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±18m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636022971,
        "imo": 9396672,
        "name": "FAIR STAR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 84.599999999999994315658113919198513031005859375,
    "avg_distance_m": 92.5,
    "distance_consistency_m": 18.39999999999999857891452847979962825775146484375,
    "duration_minutes": 333.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 19984,
    "speed_a_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_b_std": 0.299999999999999988897769753748434595763683319091796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.1600000000000000033306690738754696212708950042724609375,
            "max_sog": 1.5
        }
    },
    "time_window": {
        "start": "2026-04-02T07:14:49+00:00",
        "end": "2026-04-02T12:47:53+00:00"
    },
    "points_count": {
        "vessel_a": 49,
        "vessel_b": 49
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 85m, avg 92m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 333 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b118m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 85m, avg 92m) for 333 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 2, 2026 07:08 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 6h 35m
  • Data Points: 55 AIS positions
  • Period: 2026-04-02T07:53:48+00:00 to 2026-04-02T14:29:11+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 395.3999999999999772626324556767940521240234375,
    "points_in_zone": 55,
    "first_point": {
        "ts": "2026-04-02T07:53:48+00:00",
        "lat": 34.70816500000000104364517028443515300750732421875,
        "lon": 33.31988170000000337722667609341442584991455078125
    },
    "last_point": {
        "ts": "2026-04-02T14:29:11+00:00",
        "lat": 34.674385000000000900399754755198955535888671875,
        "lon": 33.3139316999999977042534737847745418548583984375
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 2, 2026 07:08 UTC 75.0% ▼
  • Duration: 6 hours
  • Radius: 4 meters
  • Data Points: 56 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.0999999999999996447286321199499070644378662109375,
    "duration_minutes": 360,
    "points": 56,
    "centroid": {
        "lat": 34.7081993142857072598417289555072784423828125,
        "lon": 33.319899291071436664424254558980464935302734375
    },
    "bbox": {
        "min_lat": 34.70816500000000104364517028443515300750732421875,
        "min_lon": 33.31987670000000179015842149965465068817138671875,
        "max_lat": 34.708224999999998772182152606546878814697265625,
        "max_lon": 33.3199283000000008314600563608109951019287109375
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Sts🛰️✗ Istanbul Black Sea Surveillance Zone
Apr 2, 2026 06:11 UTC 80/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9383962 (EASTERLY JUPITER) Marshall Is
  • Minimum Distance: 327 meters
  • Average Distance: 331 meters
  • Duration: 4h 9m
  • Period: 2026-04-02T06:11:47+00:00 to 2026-04-02T10:20:49+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (KOCATEPE and EASTERLY JUPITER) maintained close proximity (min 327m, avg 331m) for 249 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 327m, avg 331m
Duration25/25Duration 249 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-04-02T12:45:09.763885+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 538010209,
        "imo": 9383962,
        "name": "EASTERLY JUPITER",
        "flag": "Marshall Is"
    },
    "min_distance_m": 327.1000000000000227373675443232059478759765625,
    "avg_distance_m": 330.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 2.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 249,
    "overlap_duration_s": 14942,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_avg": 0.2200000000000000011102230246251565404236316680908203125,
    "speed_b_std": 0.200000000000000011102230246251565404236316680908203125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.2200000000000000011102230246251565404236316680908203125,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        }
    },
    "time_window": {
        "start": "2026-04-02T06:11:47+00:00",
        "end": "2026-04-02T10:20:49+00:00"
    },
    "points_count": {
        "vessel_a": 53,
        "vessel_b": 53
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 327m, avg 331m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 249 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and EASTERLY JUPITER) maintained close proximity (min 327m, avg 331m) for 249 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.708918199999999387728166766464710235595703125,
            "lon": 33.321484499999996842234395444393157958984375
        },
        "time_window": {
            "start_ts": "2026-04-02T06:11:47+00:00",
            "end_ts": "2026-04-02T10:20:49+00:00"
        },
        "searched_at": "2026-04-02T12:45:09.763885+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 2, 2026 06:05 UTC 95/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9396672 (FAIR STAR) LIBERIA
  • Minimum Distance: 85 meters
  • Average Distance: 92 meters
  • Duration: 6h 18m
  • Period: 2026-04-02T06:29:51+00:00 to 2026-04-02T12:47:53+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 85m, avg 92m) for 378 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 85m, avg 92m
Duration25/25Duration 378 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±17m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636022971,
        "imo": 9396672,
        "name": "FAIR STAR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 84.599999999999994315658113919198513031005859375,
    "avg_distance_m": 91.599999999999994315658113919198513031005859375,
    "distance_consistency_m": 16.699999999999999289457264239899814128875732421875,
    "duration_minutes": 378,
    "overlap_duration_s": 22682,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_b_avg": 0.13000000000000000444089209850062616169452667236328125,
    "speed_b_std": 0.2800000000000000266453525910037569701671600341796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.13000000000000000444089209850062616169452667236328125,
            "max_sog": 1.5
        }
    },
    "time_window": {
        "start": "2026-04-02T06:29:51+00:00",
        "end": "2026-04-02T12:47:53+00:00"
    },
    "points_count": {
        "vessel_a": 60,
        "vessel_b": 60
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 85m, avg 92m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 378 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b117m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 85m, avg 92m) for 378 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 2, 2026 06:02 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 6h 23m
  • Data Points: 61 AIS positions
  • Period: 2026-04-02T06:44:49+00:00 to 2026-04-02T13:08:46+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 383.8999999999999772626324556767940521240234375,
    "points_in_zone": 61,
    "first_point": {
        "ts": "2026-04-02T06:44:49+00:00",
        "lat": 34.70819829999999939218469080515205860137939453125,
        "lon": 33.3199316999999979316271492280066013336181640625
    },
    "last_point": {
        "ts": "2026-04-02T13:08:46+00:00",
        "lat": 34.70820499999999952933649183250963687896728515625,
        "lon": 33.31991330000000317568265018053352832794189453125
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 2, 2026 06:02 UTC 75.0% ▼
  • Duration: 6h 23m
  • Radius: 4 meters
  • Data Points: 61 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 383.8999999999999772626324556767940521240234375,
    "points": 61,
    "centroid": {
        "lat": 34.70819942295081972361003863625228404998779296875,
        "lon": 33.31990145409836401313441456295549869537353515625
    },
    "bbox": {
        "min_lat": 34.70816500000000104364517028443515300750732421875,
        "min_lon": 33.31987670000000179015842149965465068817138671875,
        "max_lat": 34.708224999999998772182152606546878814697265625,
        "max_lon": 33.319936699999999518695403821766376495361328125
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Sts🛰️✗ Istanbul Black Sea Surveillance Zone
Apr 2, 2026 05:11 UTC 80/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9383962 (EASTERLY JUPITER) Marshall Is
  • Minimum Distance: 327 meters
  • Average Distance: 331 meters
  • Duration: 5h 8m
  • Period: 2026-04-02T05:11:53+00:00 to 2026-04-02T10:20:49+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (KOCATEPE and EASTERLY JUPITER) maintained close proximity (min 327m, avg 331m) for 309 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 327m, avg 331m
Duration25/25Duration 309 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-04-02T12:00:09.464911+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 538010209,
        "imo": 9383962,
        "name": "EASTERLY JUPITER",
        "flag": "Marshall Is"
    },
    "min_distance_m": 326.8999999999999772626324556767940521240234375,
    "avg_distance_m": 330.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 2.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 308.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 18536,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_avg": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_b_std": 0.200000000000000011102230246251565404236316680908203125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.1700000000000000122124532708767219446599483489990234375,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        }
    },
    "time_window": {
        "start": "2026-04-02T05:11:53+00:00",
        "end": "2026-04-02T10:20:49+00:00"
    },
    "points_count": {
        "vessel_a": 67,
        "vessel_b": 67
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 327m, avg 331m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 309 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and EASTERLY JUPITER) maintained close proximity (min 327m, avg 331m) for 309 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70891850000000289355739369057118892669677734375,
            "lon": 33.32148769999999871060936129651963710784912109375
        },
        "time_window": {
            "start_ts": "2026-04-02T05:11:53+00:00",
            "end_ts": "2026-04-02T10:20:49+00:00"
        },
        "searched_at": "2026-04-02T12:00:09.464911+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 2, 2026 05:03 UTC 95/100 ▼
Vessel A: IMO 9396672 (FAIR STAR) LIBERIA
Vessel B: IMO 9274666 (KOCATEPE) Panama
  • Minimum Distance: 85 meters
  • Average Distance: 88 meters
  • Duration: 6h 27m
  • Period: 2026-04-02T05:57:42+00:00 to 2026-04-02T12:24:44+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (FAIR STAR and KOCATEPE) maintained close proximity (min 85m, avg 88m) for 387 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 Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 85m, avg 88m
Duration25/25Duration 387 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636022971,
        "imo": 9396672,
        "name": "FAIR STAR",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "min_distance_m": 84.599999999999994315658113919198513031005859375,
    "avg_distance_m": 87.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 1.1999999999999999555910790149937383830547332763671875,
    "duration_minutes": 387,
    "overlap_duration_s": 23222,
    "speed_a_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-04-02T05:57:42+00:00",
        "end": "2026-04-02T12:24:44+00:00"
    },
    "points_count": {
        "vessel_a": 63,
        "vessel_b": 63
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 85m, avg 88m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (FAIR STAR and KOCATEPE) maintained close proximity (min 85m, avg 88m) for 387 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 Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 2, 2026 05:02 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 6h 33m
  • Data Points: 63 AIS positions
  • Period: 2026-04-02T05:53:48+00:00 to 2026-04-02T12:26:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 393,
    "points_in_zone": 63,
    "first_point": {
        "ts": "2026-04-02T05:53:48+00:00",
        "lat": 34.70821000000000111640474642626941204071044921875,
        "lon": 33.3199249999999977944753482006490230560302734375
    },
    "last_point": {
        "ts": "2026-04-02T12:26:49+00:00",
        "lat": 34.7082132999999970479620969854295253753662109375,
        "lon": 33.3198967000000010330040822736918926239013671875
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 2, 2026 05:02 UTC 75.0% ▼
  • Duration: 6h 33m
  • Radius: 4 meters
  • Data Points: 63 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 393,
    "points": 63,
    "centroid": {
        "lat": 34.70819787777777065684858825989067554473876953125,
        "lon": 33.31990434285714997031391249038279056549072265625
    },
    "bbox": {
        "min_lat": 34.70816500000000104364517028443515300750732421875,
        "min_lon": 33.31987670000000179015842149965465068817138671875,
        "max_lat": 34.7082233000000002220986061729490756988525390625,
        "max_lon": 33.319936699999999518695403821766376495361328125
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 2, 2026 04:04 UTC 80/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9383962 (EASTERLY JUPITER) Marshall Is
  • Minimum Distance: 327 meters
  • Average Distance: 330 meters
  • Duration: 5h 57m
  • Period: 2026-04-02T04:23:46+00:00 to 2026-04-02T10:20:49+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (KOCATEPE and EASTERLY JUPITER) maintained close proximity (min 326m, avg 330m) for 357 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 Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 326m, avg 330m
Duration25/25Duration 357 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 538010209,
        "imo": 9383962,
        "name": "EASTERLY JUPITER",
        "flag": "Marshall Is"
    },
    "min_distance_m": 326.5,
    "avg_distance_m": 330.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 2.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 357.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 21423,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_b_std": 0.200000000000000011102230246251565404236316680908203125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.1499999999999999944488848768742172978818416595458984375,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        }
    },
    "time_window": {
        "start": "2026-04-02T04:23:46+00:00",
        "end": "2026-04-02T10:20:49+00:00"
    },
    "points_count": {
        "vessel_a": 78,
        "vessel_b": 78
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 326m, avg 330m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 357 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and EASTERLY JUPITER) maintained close proximity (min 326m, avg 330m) for 357 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 Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 2, 2026 04:03 UTC 95/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9396672 (FAIR STAR) LIBERIA
  • Minimum Distance: 84 meters
  • Average Distance: 88 meters
  • Duration: 6h 15m
  • Period: 2026-04-02T04:56:50+00:00 to 2026-04-02T11:11:49+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 84m, avg 88m) for 375 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 Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 84m, avg 88m
Duration25/25Duration 375 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636022971,
        "imo": 9396672,
        "name": "FAIR STAR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 84.2000000000000028421709430404007434844970703125,
    "avg_distance_m": 87.599999999999994315658113919198513031005859375,
    "distance_consistency_m": 1.1999999999999999555910790149937383830547332763671875,
    "duration_minutes": 375,
    "overlap_duration_s": 22499,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-04-02T04:56:50+00:00",
        "end": "2026-04-02T11:11:49+00:00"
    },
    "points_count": {
        "vessel_a": 76,
        "vessel_b": 76
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 84m, avg 88m"
            },
            "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 \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 84m, avg 88m) for 375 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 Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 2, 2026 04:02 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 6h 29m
  • Data Points: 78 AIS positions
  • Period: 2026-04-02T04:41:53+00:00 to 2026-04-02T11:11:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 389.8999999999999772626324556767940521240234375,
    "points_in_zone": 78,
    "first_point": {
        "ts": "2026-04-02T04:41:53+00:00",
        "lat": 34.7081917000000004236426320858299732208251953125,
        "lon": 33.319940000000002555680111981928348541259765625
    },
    "last_point": {
        "ts": "2026-04-02T11:11:49+00:00",
        "lat": 34.7082233000000002220986061729490756988525390625,
        "lon": 33.3198866999999978588675730861723423004150390625
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 2, 2026 04:02 UTC 75.0% ▼
  • Duration: 6h 29m
  • Radius: 5 meters
  • Data Points: 78 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 389.8999999999999772626324556767940521240234375,
    "points": 78,
    "centroid": {
        "lat": 34.708198565384606126826838590204715728759765625,
        "lon": 33.31991034230768633506158948875963687896728515625
    },
    "bbox": {
        "min_lat": 34.70816500000000104364517028443515300750732421875,
        "min_lon": 33.31987670000000179015842149965465068817138671875,
        "max_lat": 34.7082233000000002220986061729490756988525390625,
        "max_lon": 33.31995669999999876154106459580361843109130859375
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 2, 2026 03:17 UTC 95/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9396672 (FAIR STAR) LIBERIA
  • Minimum Distance: 84 meters
  • Average Distance: 87 meters
  • Duration: 6h 24m
  • Period: 2026-04-02T03:47:49+00:00 to 2026-04-02T10:11:48+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 84m, avg 87m) for 384 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 Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 84m, avg 87m
Duration25/25Duration 384 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636022971,
        "imo": 9396672,
        "name": "FAIR STAR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 84.2000000000000028421709430404007434844970703125,
    "avg_distance_m": 87.2999999999999971578290569595992565155029296875,
    "distance_consistency_m": 1.3000000000000000444089209850062616169452667236328125,
    "duration_minutes": 384,
    "overlap_duration_s": 23039,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-04-02T03:47:49+00:00",
        "end": "2026-04-02T10:11:48+00:00"
    },
    "points_count": {
        "vessel_a": 84,
        "vessel_b": 84
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 84m, avg 87m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 384 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 84m, avg 87m) for 384 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 Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 2, 2026 03:16 UTC 80/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9383962 (EASTERLY JUPITER) Marshall Is
  • Minimum Distance: 327 meters
  • Average Distance: 330 meters
  • Duration: 6h 15m
  • Period: 2026-04-02T03:56:49+00:00 to 2026-04-02T10:11:48+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (KOCATEPE and EASTERLY JUPITER) maintained close proximity (min 326m, avg 330m) for 375 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 Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 326m, avg 330m
Duration25/25Duration 375 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 538010209,
        "imo": 9383962,
        "name": "EASTERLY JUPITER",
        "flag": "Marshall Is"
    },
    "min_distance_m": 326.5,
    "avg_distance_m": 330.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 2.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 375,
    "overlap_duration_s": 22499,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.14000000000000001332267629550187848508358001708984375,
    "speed_b_std": 0.190000000000000002220446049250313080847263336181640625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.14000000000000001332267629550187848508358001708984375,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        }
    },
    "time_window": {
        "start": "2026-04-02T03:56:49+00:00",
        "end": "2026-04-02T10:11:48+00:00"
    },
    "points_count": {
        "vessel_a": 82,
        "vessel_b": 82
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 326m, avg 330m"
            },
            "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 \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and EASTERLY JUPITER) maintained close proximity (min 326m, avg 330m) for 375 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 Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 2, 2026 03:14 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 84 AIS positions
  • Period: 2026-04-02T03:50:51+00:00 to 2026-04-02T10:20:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 390,
    "points_in_zone": 84,
    "first_point": {
        "ts": "2026-04-02T03:50:51+00:00",
        "lat": 34.70816500000000104364517028443515300750732421875,
        "lon": 33.3199249999999977944753482006490230560302734375
    },
    "last_point": {
        "ts": "2026-04-02T10:20:49+00:00",
        "lat": 34.70820669999999807942003826610743999481201171875,
        "lon": 33.31989999999999696456143283285200595855712890625
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 2, 2026 03:14 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 5 meters
  • Data Points: 84 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.5,
    "duration_minutes": 390,
    "points": 84,
    "centroid": {
        "lat": 34.70819599047617742826332687400281429290771484375,
        "lon": 33.31991388928571495853248052299022674560546875
    },
    "bbox": {
        "min_lat": 34.70816500000000104364517028443515300750732421875,
        "min_lon": 33.31987670000000179015842149965465068817138671875,
        "max_lat": 34.7082233000000002220986061729490756988525390625,
        "max_lon": 33.31995669999999876154106459580361843109130859375
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 2, 2026 02:08 UTC 95/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9396672 (FAIR STAR) LIBERIA
  • Minimum Distance: 84 meters
  • Average Distance: 87 meters
  • Duration: 6h 30m
  • Period: 2026-04-02T02:35:46+00:00 to 2026-04-02T09:05:48+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 84m, avg 87m) for 390 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 84m, avg 87m
Duration25/25Duration 390 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636022971,
        "imo": 9396672,
        "name": "FAIR STAR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 83.5,
    "avg_distance_m": 87.2999999999999971578290569595992565155029296875,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 390,
    "overlap_duration_s": 23402,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-04-02T02:35:46+00:00",
        "end": "2026-04-02T09:05:48+00:00"
    },
    "points_count": {
        "vessel_a": 80,
        "vessel_b": 80
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 84m, avg 87m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 84m, avg 87m) for 390 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 2, 2026 02:04 UTC 80/100 ▼
Vessel A: IMO 9383962 (EASTERLY JUPITER) Marshall Is
Vessel B: IMO 9274666 (KOCATEPE) Panama
  • Minimum Distance: 327 meters
  • Average Distance: 330 meters
  • Duration: 6h 32m
  • Period: 2026-04-02T02:34:31+00:00 to 2026-04-02T09:07:04+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (EASTERLY JUPITER and KOCATEPE) maintained close proximity (min 326m, avg 330m) for 393 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 Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 326m, avg 330m
Duration25/25Duration 393 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538010209,
        "imo": 9383962,
        "name": "EASTERLY JUPITER",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "min_distance_m": 326.5,
    "avg_distance_m": 329.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 2.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 392.6000000000000227373675443232059478759765625,
    "overlap_duration_s": 23553,
    "speed_a_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-04-02T02:34:31+00:00",
        "end": "2026-04-02T09:07:04+00:00"
    },
    "points_count": {
        "vessel_a": 80,
        "vessel_b": 80
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 326m, avg 330m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 393 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (EASTERLY JUPITER and KOCATEPE) maintained close proximity (min 326m, avg 330m) for 393 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 Eastern Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 2, 2026 02:02 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 82 AIS positions
  • Period: 2026-04-02T02:32:48+00:00 to 2026-04-02T09:08:46+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 396,
    "points_in_zone": 82,
    "first_point": {
        "ts": "2026-04-02T02:32:48+00:00",
        "lat": 34.70816330000000249356162385083734989166259765625,
        "lon": 33.3199249999999977944753482006490230560302734375
    },
    "last_point": {
        "ts": "2026-04-02T09:08:46+00:00",
        "lat": 34.70819829999999939218469080515205860137939453125,
        "lon": 33.31989829999999841447788639925420284271240234375
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 2, 2026 02:02 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 5 meters
  • Data Points: 82 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.5,
    "duration_minutes": 396,
    "points": 82,
    "centroid": {
        "lat": 34.70819290365853504454207723028957843780517578125,
        "lon": 33.31991764268291689177203807048499584197998046875
    },
    "bbox": {
        "min_lat": 34.70816169999999800666046212427318096160888671875,
        "min_lon": 33.31987670000000179015842149965465068817138671875,
        "max_lat": 34.7082233000000002220986061729490756988525390625,
        "max_lon": 33.31995669999999876154106459580361843109130859375
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 2, 2026 01:04 UTC 80/100 ▼
Vessel A: IMO 9383962 (EASTERLY JUPITER) Marshall Is
Vessel B: IMO 9274666 (KOCATEPE) Panama
  • Minimum Distance: 327 meters
  • Average Distance: 330 meters
  • Duration: 6h 26m
  • Period: 2026-04-02T01:58:30+00:00 to 2026-04-02T08:25:10+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (EASTERLY JUPITER and KOCATEPE) maintained close proximity (min 326m, avg 330m) for 387 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 326m, avg 330m
Duration25/25Duration 387 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538010209,
        "imo": 9383962,
        "name": "EASTERLY JUPITER",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "min_distance_m": 326.5,
    "avg_distance_m": 329.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 2,
    "duration_minutes": 386.69999999999998863131622783839702606201171875,
    "overlap_duration_s": 23200,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-04-02T01:58:30+00:00",
        "end": "2026-04-02T08:25:10+00:00"
    },
    "points_count": {
        "vessel_a": 81,
        "vessel_b": 81
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 326m, avg 330m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (EASTERLY JUPITER and KOCATEPE) maintained close proximity (min 326m, avg 330m) for 387 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 2, 2026 01:02 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 81 AIS positions
  • Period: 2026-04-02T01:56:46+00:00 to 2026-04-02T08:26:52+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 390.1000000000000227373675443232059478759765625,
    "points_in_zone": 81,
    "first_point": {
        "ts": "2026-04-02T01:56:46+00:00",
        "lat": 34.70817329999999856227077543735504150390625,
        "lon": 33.3199182999999976573235471732914447784423828125
    },
    "last_point": {
        "ts": "2026-04-02T08:26:52+00:00",
        "lat": 34.70818669999999883657437749207019805908203125,
        "lon": 33.31989329999999682740963180549442768096923828125
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 2, 2026 01:02 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 5 meters
  • Data Points: 81 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 390.1000000000000227373675443232059478759765625,
    "points": 81,
    "centroid": {
        "lat": 34.7081915185185181371707585640251636505126953125,
        "lon": 33.31992221975308865467013674788177013397216796875
    },
    "bbox": {
        "min_lat": 34.70816169999999800666046212427318096160888671875,
        "min_lon": 33.31988170000000337722667609341442584991455078125,
        "max_lat": 34.7082233000000002220986061729490756988525390625,
        "max_lon": 33.31995669999999876154106459580361843109130859375
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 2, 2026 01:02 UTC 95/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9396672 (FAIR STAR) LIBERIA
  • Minimum Distance: 84 meters
  • Average Distance: 87 meters
  • Duration: 6h 30m
  • Period: 2026-04-02T01:56:46+00:00 to 2026-04-02T08:26:52+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 84m, avg 87m) for 390 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 84m, avg 87m
Duration25/25Duration 390 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636022971,
        "imo": 9396672,
        "name": "FAIR STAR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 83.5,
    "avg_distance_m": 87,
    "distance_consistency_m": 1.5,
    "duration_minutes": 390.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 23406,
    "speed_a_avg": 0,
    "speed_a_std": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-04-02T01:56:46+00:00",
        "end": "2026-04-02T08:26:52+00:00"
    },
    "points_count": {
        "vessel_a": 81,
        "vessel_b": 81
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 84m, avg 87m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 84m, avg 87m) for 390 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 2, 2026 00:11 UTC 95/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9396672 (FAIR STAR) LIBERIA
  • Minimum Distance: 84 meters
  • Average Distance: 87 meters
  • Duration: 6h 27m
  • Period: 2026-04-02T00:56:51+00:00 to 2026-04-02T07:23:53+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 84m, avg 87m) for 387 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 84m, avg 87m
Duration25/25Duration 387 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636022971,
        "imo": 9396672,
        "name": "FAIR STAR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 83.5,
    "avg_distance_m": 86.900000000000005684341886080801486968994140625,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 387,
    "overlap_duration_s": 23222,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-04-02T00:56:51+00:00",
        "end": "2026-04-02T07:23:53+00:00"
    },
    "points_count": {
        "vessel_a": 79,
        "vessel_b": 79
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 84m, avg 87m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 84m, avg 87m) for 387 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 2, 2026 00:10 UTC 80/100 ▼
Vessel A: IMO 9383962 (EASTERLY JUPITER) Marshall Is
Vessel B: IMO 9274666 (KOCATEPE) Panama
  • Minimum Distance: 327 meters
  • Average Distance: 330 meters
  • Duration: 6h 26m
  • Period: 2026-04-02T00:55:33+00:00 to 2026-04-02T07:22:04+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (EASTERLY JUPITER and KOCATEPE) maintained close proximity (min 326m, avg 330m) for 386 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 326m, avg 330m
Duration25/25Duration 386 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538010209,
        "imo": 9383962,
        "name": "EASTERLY JUPITER",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "min_distance_m": 326.5,
    "avg_distance_m": 329.5,
    "distance_consistency_m": 1.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 386.5,
    "overlap_duration_s": 23191,
    "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": "2026-04-02T00:55:33+00:00",
        "end": "2026-04-02T07:22:04+00:00"
    },
    "points_count": {
        "vessel_a": 82,
        "vessel_b": 82
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 326m, avg 330m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 386 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (EASTERLY JUPITER and KOCATEPE) maintained close proximity (min 326m, avg 330m) for 386 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 2, 2026 00:08 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 6h 33m
  • Data Points: 81 AIS positions
  • Period: 2026-04-02T00:50:48+00:00 to 2026-04-02T07:23:53+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 393.1000000000000227373675443232059478759765625,
    "points_in_zone": 81,
    "first_point": {
        "ts": "2026-04-02T00:50:48+00:00",
        "lat": 34.7081950000000034606273402459919452667236328125,
        "lon": 33.319933300000002418528310954570770263671875
    },
    "last_point": {
        "ts": "2026-04-02T07:23:53+00:00",
        "lat": 34.70820330000000097925294539891183376312255859375,
        "lon": 33.3199182999999976573235471732914447784423828125
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 2, 2026 00:08 UTC 75.0% ▼
  • Duration: 6h 33m
  • Radius: 4 meters
  • Data Points: 81 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 393.1000000000000227373675443232059478759765625,
    "points": 81,
    "centroid": {
        "lat": 34.70819174444444144000954111106693744659423828125,
        "lon": 33.31992614938271657365476130507886409759521484375
    },
    "bbox": {
        "min_lat": 34.70816169999999800666046212427318096160888671875,
        "min_lon": 33.3198967000000010330040822736918926239013671875,
        "max_lat": 34.7082233000000002220986061729490756988525390625,
        "max_lon": 33.31995669999999876154106459580361843109130859375
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 1, 2026 23:04 UTC 80/100 ▼
Vessel A: IMO 9383962 (EASTERLY JUPITER) Marshall Is
Vessel B: IMO 9274666 (KOCATEPE) Panama
  • Minimum Distance: 327 meters
  • Average Distance: 330 meters
  • Duration: 6h 29m
  • Period: 2026-04-01T23:52:26+00:00 to 2026-04-02T06:22:06+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (EASTERLY JUPITER and KOCATEPE) maintained close proximity (min 326m, avg 330m) for 390 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 326m, avg 330m
Duration25/25Duration 390 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538010209,
        "imo": 9383962,
        "name": "EASTERLY JUPITER",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "min_distance_m": 326.5,
    "avg_distance_m": 329.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 1.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 389.69999999999998863131622783839702606201171875,
    "overlap_duration_s": 23380,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-04-01T23:52:26+00:00",
        "end": "2026-04-02T06:22:06+00:00"
    },
    "points_count": {
        "vessel_a": 82,
        "vessel_b": 82
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 326m, avg 330m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (EASTERLY JUPITER and KOCATEPE) maintained close proximity (min 326m, avg 330m) for 390 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 1, 2026 23:02 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 81 AIS positions
  • Period: 2026-04-01T23:50:47+00:00 to 2026-04-02T06:26:48+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 396,
    "points_in_zone": 81,
    "first_point": {
        "ts": "2026-04-01T23:50:47+00:00",
        "lat": 34.70819000000000187355908565223217010498046875,
        "lon": 33.31990170000000262007233686745166778564453125
    },
    "last_point": {
        "ts": "2026-04-02T06:26:48+00:00",
        "lat": 34.70819329999999780511643621139228343963623046875,
        "lon": 33.31990830000000158861439558677375316619873046875
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 1, 2026 23:02 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 4 meters
  • Data Points: 81 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 396,
    "points": 81,
    "centroid": {
        "lat": 34.70819110987654454447692842222750186920166015625,
        "lon": 33.31992518395060898228621226735413074493408203125
    },
    "bbox": {
        "min_lat": 34.70816169999999800666046212427318096160888671875,
        "min_lon": 33.31988170000000337722667609341442584991455078125,
        "max_lat": 34.7082233000000002220986061729490756988525390625,
        "max_lon": 33.31995669999999876154106459580361843109130859375
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 1, 2026 23:02 UTC 95/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9396672 (FAIR STAR) LIBERIA
  • Minimum Distance: 84 meters
  • Average Distance: 87 meters
  • Duration: 6h 33m
  • Period: 2026-04-01T23:53:48+00:00 to 2026-04-02T06:26:48+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 84m, avg 87m) for 393 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 84m, avg 87m
Duration25/25Duration 393 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636022971,
        "imo": 9396672,
        "name": "FAIR STAR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 83.5,
    "avg_distance_m": 86.900000000000005684341886080801486968994140625,
    "distance_consistency_m": 1.5,
    "duration_minutes": 393,
    "overlap_duration_s": 23580,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-04-01T23:53:48+00:00",
        "end": "2026-04-02T06:26:48+00:00"
    },
    "points_count": {
        "vessel_a": 80,
        "vessel_b": 80
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 84m, avg 87m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 393 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 84m, avg 87m) for 393 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 1, 2026 22:04 UTC 80/100 ▼
Vessel A: IMO 9383962 (EASTERLY JUPITER) Marshall Is
Vessel B: IMO 9274666 (KOCATEPE) Panama
  • Minimum Distance: 315 meters
  • Average Distance: 330 meters
  • Duration: 6h 29m
  • Period: 2026-04-01T22:52:49+00:00 to 2026-04-02T05:22:07+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (EASTERLY JUPITER and KOCATEPE) maintained close proximity (min 315m, avg 330m) for 389 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 315m, avg 330m
Duration25/25Duration 389 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538010209,
        "imo": 9383962,
        "name": "EASTERLY JUPITER",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "min_distance_m": 315.1000000000000227373675443232059478759765625,
    "avg_distance_m": 329.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 2.5,
    "duration_minutes": 389.30000000000001136868377216160297393798828125,
    "overlap_duration_s": 23358,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_b_avg": 0,
    "speed_b_std": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 1.5
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-04-01T22:52:49+00:00",
        "end": "2026-04-02T05:22:07+00:00"
    },
    "points_count": {
        "vessel_a": 86,
        "vessel_b": 86
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 315m, avg 330m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 389 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (EASTERLY JUPITER and KOCATEPE) maintained close proximity (min 315m, avg 330m) for 389 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 1, 2026 22:02 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 81 AIS positions
  • Period: 2026-04-01T22:50:47+00:00 to 2026-04-02T05:26:52+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 396.1000000000000227373675443232059478759765625,
    "points_in_zone": 81,
    "first_point": {
        "ts": "2026-04-01T22:50:47+00:00",
        "lat": 34.70820330000000097925294539891183376312255859375,
        "lon": 33.319891699999999445935827679932117462158203125
    },
    "last_point": {
        "ts": "2026-04-02T05:26:52+00:00",
        "lat": 34.7081950000000034606273402459919452667236328125,
        "lon": 33.319923299999999244391801767051219940185546875
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 1, 2026 22:02 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 5 meters
  • Data Points: 81 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 5.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 396.1000000000000227373675443232059478759765625,
    "points": 81,
    "centroid": {
        "lat": 34.7081902691358124002363183535635471343994140625,
        "lon": 33.31992032592592778428297606296837329864501953125
    },
    "bbox": {
        "min_lat": 34.70816169999999800666046212427318096160888671875,
        "min_lon": 33.31986330000000151585481944493949413299560546875,
        "max_lat": 34.70821670000000125355654745362699031829833984375,
        "max_lon": 33.31995669999999876154106459580361843109130859375
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 1, 2026 22:02 UTC 95/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9396672 (FAIR STAR) LIBERIA
  • Minimum Distance: 84 meters
  • Average Distance: 87 meters
  • Duration: 6h 27m
  • Period: 2026-04-01T22:59:46+00:00 to 2026-04-02T05:26:52+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 84m, avg 87m) for 387 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 84m, avg 87m
Duration25/25Duration 387 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636022971,
        "imo": 9396672,
        "name": "FAIR STAR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 83.5,
    "avg_distance_m": 87.099999999999994315658113919198513031005859375,
    "distance_consistency_m": 2,
    "duration_minutes": 387.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 23226,
    "speed_a_avg": 0,
    "speed_a_std": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_avg": 0,
    "speed_b_std": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-04-01T22:59:46+00:00",
        "end": "2026-04-02T05:26:52+00:00"
    },
    "points_count": {
        "vessel_a": 80,
        "vessel_b": 80
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 84m, avg 87m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 84m, avg 87m) for 387 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 1, 2026 21:02 UTC 80/100 ▼
Vessel A: IMO 9383962 (EASTERLY JUPITER) Marshall Is
Vessel B: IMO 9274666 (KOCATEPE) Panama
  • Minimum Distance: 315 meters
  • Average Distance: 331 meters
  • Duration: 6h 34m
  • Period: 2026-04-01T21:50:50+00:00 to 2026-04-02T04:25:03+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (EASTERLY JUPITER and KOCATEPE) maintained close proximity (min 315m, avg 331m) for 394 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 315m, avg 331m
Duration25/25Duration 394 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±5m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538010209,
        "imo": 9383962,
        "name": "EASTERLY JUPITER",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "min_distance_m": 315.1000000000000227373675443232059478759765625,
    "avg_distance_m": 330.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 4.9000000000000003552713678800500929355621337890625,
    "duration_minutes": 394.19999999999998863131622783839702606201171875,
    "overlap_duration_s": 23653,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 1.5
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-04-01T21:50:50+00:00",
        "end": "2026-04-02T04:25:03+00:00"
    },
    "points_count": {
        "vessel_a": 91,
        "vessel_b": 91
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 315m, avg 331m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 394 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (EASTERLY JUPITER and KOCATEPE) maintained close proximity (min 315m, avg 331m) for 394 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 1, 2026 21:02 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 82 AIS positions
  • Period: 2026-04-01T21:50:48+00:00 to 2026-04-02T04:26:51+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 396.1000000000000227373675443232059478759765625,
    "points_in_zone": 82,
    "first_point": {
        "ts": "2026-04-01T21:50:48+00:00",
        "lat": 34.7081950000000034606273402459919452667236328125,
        "lon": 33.31990499999999855162968742661178112030029296875
    },
    "last_point": {
        "ts": "2026-04-02T04:26:51+00:00",
        "lat": 34.70819999999999794226823723874986171722412109375,
        "lon": 33.31994999999999862438926356844604015350341796875
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 1, 2026 21:02 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 6 meters
  • Data Points: 82 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 5.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 396.1000000000000227373675443232059478759765625,
    "points": 82,
    "centroid": {
        "lat": 34.70818983658536893699420033954083919525146484375,
        "lon": 33.319913412195120372416567988693714141845703125
    },
    "bbox": {
        "min_lat": 34.70816169999999800666046212427318096160888671875,
        "min_lon": 33.31986330000000151585481944493949413299560546875,
        "max_lat": 34.70823829999999787787601235322654247283935546875,
        "max_lon": 33.31995669999999876154106459580361843109130859375
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 1, 2026 21:02 UTC 95/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9396672 (FAIR STAR) LIBERIA
  • Minimum Distance: 84 meters
  • Average Distance: 88 meters
  • Duration: 6h 33m
  • Period: 2026-04-01T21:53:51+00:00 to 2026-04-02T04:26:51+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 84m, avg 88m) for 393 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 84m, avg 88m
Duration25/25Duration 393 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636022971,
        "imo": 9396672,
        "name": "FAIR STAR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 83.5,
    "avg_distance_m": 87.599999999999994315658113919198513031005859375,
    "distance_consistency_m": 2.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 393,
    "overlap_duration_s": 23580,
    "speed_a_avg": 0,
    "speed_a_std": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-04-01T21:53:51+00:00",
        "end": "2026-04-02T04:26:51+00:00"
    },
    "points_count": {
        "vessel_a": 81,
        "vessel_b": 81
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 84m, avg 88m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 393 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 84m, avg 88m) for 393 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 1, 2026 20:02 UTC 80/100 ▼
Vessel A: IMO 9383962 (EASTERLY JUPITER) Marshall Is
Vessel B: IMO 9274666 (KOCATEPE) Panama
  • Minimum Distance: 315 meters
  • Average Distance: 331 meters
  • Duration: 6h 34m
  • Period: 2026-04-01T20:50:48+00:00 to 2026-04-02T03:25:36+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (EASTERLY JUPITER and KOCATEPE) maintained close proximity (min 315m, avg 331m) for 395 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 315m, avg 331m
Duration25/25Duration 395 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±5m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538010209,
        "imo": 9383962,
        "name": "EASTERLY JUPITER",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "min_distance_m": 315.1000000000000227373675443232059478759765625,
    "avg_distance_m": 331.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 4.9000000000000003552713678800500929355621337890625,
    "duration_minutes": 394.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 23688,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 1.5
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-04-01T20:50:48+00:00",
        "end": "2026-04-02T03:25:36+00:00"
    },
    "points_count": {
        "vessel_a": 89,
        "vessel_b": 89
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 315m, avg 331m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 395 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (EASTERLY JUPITER and KOCATEPE) maintained close proximity (min 315m, avg 331m) for 395 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 1, 2026 20:02 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 86 AIS positions
  • Period: 2026-04-01T20:50:48+00:00 to 2026-04-02T03:26:51+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 396.1000000000000227373675443232059478759765625,
    "points_in_zone": 86,
    "first_point": {
        "ts": "2026-04-01T20:50:48+00:00",
        "lat": 34.70819999999999794226823723874986171722412109375,
        "lon": 33.31989329999999682740963180549442768096923828125
    },
    "last_point": {
        "ts": "2026-04-02T03:26:51+00:00",
        "lat": 34.70817000000000263071342487819492816925048828125,
        "lon": 33.31995669999999876154106459580361843109130859375
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 1, 2026 20:02 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 6 meters
  • Data Points: 86 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 5.5,
    "duration_minutes": 396.1000000000000227373675443232059478759765625,
    "points": 86,
    "centroid": {
        "lat": 34.70819093023254708896274678409099578857421875,
        "lon": 33.31991108139532542509186896495521068572998046875
    },
    "bbox": {
        "min_lat": 34.70816330000000249356162385083734989166259765625,
        "min_lon": 33.31986330000000151585481944493949413299560546875,
        "max_lat": 34.70823829999999787787601235322654247283935546875,
        "max_lon": 33.31995669999999876154106459580361843109130859375
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 1, 2026 20:02 UTC 95/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9396672 (FAIR STAR) LIBERIA
  • Minimum Distance: 83 meters
  • Average Distance: 88 meters
  • Duration: 6h 33m
  • Period: 2026-04-01T20:53:51+00:00 to 2026-04-02T03:26:51+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 83m, avg 88m) for 393 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 83m, avg 88m
Duration25/25Duration 393 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636022971,
        "imo": 9396672,
        "name": "FAIR STAR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 82.599999999999994315658113919198513031005859375,
    "avg_distance_m": 87.900000000000005684341886080801486968994140625,
    "distance_consistency_m": 2.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 393,
    "overlap_duration_s": 23580,
    "speed_a_avg": 0,
    "speed_a_std": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-04-01T20:53:51+00:00",
        "end": "2026-04-02T03:26:51+00:00"
    },
    "points_count": {
        "vessel_a": 85,
        "vessel_b": 85
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 83m, avg 88m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 393 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 83m, avg 88m) for 393 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 1, 2026 19:08 UTC 80/100 ▼
Vessel A: IMO 9383962 (EASTERLY JUPITER) Marshall Is
Vessel B: IMO 9274666 (KOCATEPE) Panama
  • Minimum Distance: 315 meters
  • Average Distance: 331 meters
  • Duration: 6h 34m
  • Period: 2026-04-01T19:50:53+00:00 to 2026-04-02T02:25:31+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (EASTERLY JUPITER and KOCATEPE) maintained close proximity (min 315m, avg 331m) for 395 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 315m, avg 331m
Duration25/25Duration 395 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±5m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538010209,
        "imo": 9383962,
        "name": "EASTERLY JUPITER",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "min_distance_m": 315.1000000000000227373675443232059478759765625,
    "avg_distance_m": 331,
    "distance_consistency_m": 4.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 394.6000000000000227373675443232059478759765625,
    "overlap_duration_s": 23678,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 1.5
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-04-01T19:50:53+00:00",
        "end": "2026-04-02T02:25:31+00:00"
    },
    "points_count": {
        "vessel_a": 94,
        "vessel_b": 94
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 315m, avg 331m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 395 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (EASTERLY JUPITER and KOCATEPE) maintained close proximity (min 315m, avg 331m) for 395 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 1, 2026 19:08 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 94 AIS positions
  • Period: 2026-04-01T19:50:47+00:00 to 2026-04-02T02:26:51+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 396.1000000000000227373675443232059478759765625,
    "points_in_zone": 94,
    "first_point": {
        "ts": "2026-04-01T19:50:47+00:00",
        "lat": 34.70820169999999649235178367234766483306884765625,
        "lon": 33.31989829999999841447788639925420284271240234375
    },
    "last_point": {
        "ts": "2026-04-02T02:26:51+00:00",
        "lat": 34.70817329999999856227077543735504150390625,
        "lon": 33.31992000000000331283445120789110660552978515625
    }
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 1, 2026 19:08 UTC 95/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9396672 (FAIR STAR) LIBERIA
  • Minimum Distance: 84 meters
  • Average Distance: 88 meters
  • Duration: 6h 30m
  • Period: 2026-04-01T19:56:47+00:00 to 2026-04-02T02:26:51+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 84m, avg 88m) for 390 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 84m, avg 88m
Duration25/25Duration 390 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636022971,
        "imo": 9396672,
        "name": "FAIR STAR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 84.400000000000005684341886080801486968994140625,
    "avg_distance_m": 88.2000000000000028421709430404007434844970703125,
    "distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 390.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 23404,
    "speed_a_avg": 0,
    "speed_a_std": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-04-01T19:56:47+00:00",
        "end": "2026-04-02T02:26:51+00:00"
    },
    "points_count": {
        "vessel_a": 93,
        "vessel_b": 93
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 84m, avg 88m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 84m, avg 88m) for 390 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 1, 2026 19:08 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 5 meters
  • Data Points: 94 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 5.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 396.1000000000000227373675443232059478759765625,
    "points": 94,
    "centroid": {
        "lat": 34.708192180851057173640583641827106475830078125,
        "lon": 33.31990841914893053399282507598400115966796875
    },
    "bbox": {
        "min_lat": 34.70817000000000263071342487819492816925048828125,
        "min_lon": 33.31986330000000151585481944493949413299560546875,
        "max_lat": 34.70823829999999787787601235322654247283935546875,
        "max_lon": 33.31994329999999848723746254108846187591552734375
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 1, 2026 18:32 UTC 95/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9396672 (FAIR STAR) LIBERIA
  • Minimum Distance: 85 meters
  • Average Distance: 89 meters
  • Duration: 6h 27m
  • Period: 2026-04-01T18:47:46+00:00 to 2026-04-02T01:14:47+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 85m, avg 88m) for 387 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 85m, avg 88m
Duration25/25Duration 387 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636022971,
        "imo": 9396672,
        "name": "FAIR STAR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 85,
    "avg_distance_m": 88.5,
    "distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 387,
    "overlap_duration_s": 23221,
    "speed_a_avg": 0,
    "speed_a_std": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-04-01T18:47:46+00:00",
        "end": "2026-04-02T01:14:47+00:00"
    },
    "points_count": {
        "vessel_a": 93,
        "vessel_b": 93
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 85m, avg 88m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 85m, avg 88m) for 387 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 1, 2026 18:31 UTC 80/100 ▼
Vessel A: IMO 9383962 (EASTERLY JUPITER) Marshall Is
Vessel B: IMO 9274666 (KOCATEPE) Panama
  • Minimum Distance: 315 meters
  • Average Distance: 331 meters
  • Duration: 6h 29m
  • Period: 2026-04-01T18:46:57+00:00 to 2026-04-02T01:16:30+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (EASTERLY JUPITER and KOCATEPE) maintained close proximity (min 315m, avg 331m) for 390 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 315m, avg 331m
Duration25/25Duration 390 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±5m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538010209,
        "imo": 9383962,
        "name": "EASTERLY JUPITER",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "min_distance_m": 315.1000000000000227373675443232059478759765625,
    "avg_distance_m": 330.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 4.9000000000000003552713678800500929355621337890625,
    "duration_minutes": 389.6000000000000227373675443232059478759765625,
    "overlap_duration_s": 23373,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 1.5
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-04-01T18:46:57+00:00",
        "end": "2026-04-02T01:16:30+00:00"
    },
    "points_count": {
        "vessel_a": 94,
        "vessel_b": 94
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 315m, avg 331m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (EASTERLY JUPITER and KOCATEPE) maintained close proximity (min 315m, avg 331m) for 390 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 1, 2026 18:29 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 6h 33m
  • Data Points: 95 AIS positions
  • Period: 2026-04-01T18:44:50+00:00 to 2026-04-02T01:17:53+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 393.1000000000000227373675443232059478759765625,
    "points_in_zone": 95,
    "first_point": {
        "ts": "2026-04-01T18:44:50+00:00",
        "lat": 34.70820830000000256632119999267160892486572265625,
        "lon": 33.31992170000000186291799764148890972137451171875
    },
    "last_point": {
        "ts": "2026-04-02T01:17:53+00:00",
        "lat": 34.7081850000000002864908310584723949432373046875,
        "lon": 33.3199283000000008314600563608109951019287109375
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 1, 2026 18:29 UTC 75.0% ▼
  • Duration: 6h 33m
  • Radius: 5 meters
  • Data Points: 95 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.9000000000000003552713678800500929355621337890625,
    "duration_minutes": 393.1000000000000227373675443232059478759765625,
    "points": 95,
    "centroid": {
        "lat": 34.70819566842104819670566939748823642730712890625,
        "lon": 33.319907910526325167666072957217693328857421875
    },
    "bbox": {
        "min_lat": 34.70817170000000118079697131179273128509521484375,
        "min_lon": 33.31986330000000151585481944493949413299560546875,
        "max_lat": 34.70823829999999787787601235322654247283935546875,
        "max_lon": 33.31993829999999690016920794732868671417236328125
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 1, 2026 17:08 UTC 80/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9383962 (EASTERLY JUPITER) Marshall Is
  • Minimum Distance: 315 meters
  • Average Distance: 331 meters
  • Duration: 6h 24m
  • Period: 2026-04-01T17:26:48+00:00 to 2026-04-01T23:50:47+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (KOCATEPE and EASTERLY JUPITER) maintained close proximity (min 315m, avg 331m) for 384 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 315m, avg 331m
Duration25/25Duration 384 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±5m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 538010209,
        "imo": 9383962,
        "name": "EASTERLY JUPITER",
        "flag": "Marshall Is"
    },
    "min_distance_m": 315.1000000000000227373675443232059478759765625,
    "avg_distance_m": 331,
    "distance_consistency_m": 5.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 384,
    "overlap_duration_s": 23039,
    "speed_a_avg": 0,
    "speed_a_std": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 1.5
        }
    },
    "time_window": {
        "start": "2026-04-01T17:26:48+00:00",
        "end": "2026-04-01T23:50:47+00:00"
    },
    "points_count": {
        "vessel_a": 78,
        "vessel_b": 78
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 315m, avg 331m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 384 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and EASTERLY JUPITER) maintained close proximity (min 315m, avg 331m) for 384 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 1, 2026 17:03 UTC 95/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9396672 (FAIR STAR) LIBERIA
  • Minimum Distance: 86 meters
  • Average Distance: 89 meters
  • Duration: 6h 33m
  • Period: 2026-04-01T17:23:47+00:00 to 2026-04-01T23:56:46+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 86m, avg 89m) for 393 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 86m, avg 89m
Duration25/25Duration 393 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636022971,
        "imo": 9396672,
        "name": "FAIR STAR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 85.7000000000000028421709430404007434844970703125,
    "avg_distance_m": 88.599999999999994315658113919198513031005859375,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 393,
    "overlap_duration_s": 23579,
    "speed_a_avg": 0,
    "speed_a_std": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-04-01T17:23:47+00:00",
        "end": "2026-04-01T23:56:46+00:00"
    },
    "points_count": {
        "vessel_a": 81,
        "vessel_b": 81
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 86m, avg 89m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 393 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 86m, avg 89m) for 393 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 1, 2026 17:02 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 6h 35m
  • Data Points: 82 AIS positions
  • Period: 2026-04-01T17:20:52+00:00 to 2026-04-01T23:56:46+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 395.8999999999999772626324556767940521240234375,
    "points_in_zone": 82,
    "first_point": {
        "ts": "2026-04-01T17:20:52+00:00",
        "lat": 34.70819000000000187355908565223217010498046875,
        "lon": 33.31989999999999696456143283285200595855712890625
    },
    "last_point": {
        "ts": "2026-04-01T23:56:46+00:00",
        "lat": 34.70820669999999807942003826610743999481201171875,
        "lon": 33.31988170000000337722667609341442584991455078125
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 1, 2026 17:02 UTC 75.0% ▼
  • Duration: 6h 35m
  • Radius: 5 meters
  • Data Points: 82 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 395.8999999999999772626324556767940521240234375,
    "points": 82,
    "centroid": {
        "lat": 34.70819723414632562707993201911449432373046875,
        "lon": 33.31990491585366243043608847074210643768310546875
    },
    "bbox": {
        "min_lat": 34.70817170000000118079697131179273128509521484375,
        "min_lon": 33.31986330000000151585481944493949413299560546875,
        "max_lat": 34.70823829999999787787601235322654247283935546875,
        "max_lon": 33.319936699999999518695403821766376495361328125
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 1, 2026 16:34 UTC 80/100 ▼
Vessel A: IMO 9383962 (EASTERLY JUPITER) Marshall Is
Vessel B: IMO 9274666 (KOCATEPE) Panama
  • Minimum Distance: 326 meters
  • Average Distance: 331 meters
  • Duration: 6h 29m
  • Period: 2026-04-01T16:55:58+00:00 to 2026-04-01T23:25:51+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (EASTERLY JUPITER and KOCATEPE) maintained close proximity (min 326m, avg 331m) for 390 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 326m, avg 331m
Duration25/25Duration 390 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±5m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538010209,
        "imo": 9383962,
        "name": "EASTERLY JUPITER",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "min_distance_m": 326,
    "avg_distance_m": 331.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 5,
    "duration_minutes": 389.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 23393,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-04-01T16:55:58+00:00",
        "end": "2026-04-01T23:25:51+00:00"
    },
    "points_count": {
        "vessel_a": 76,
        "vessel_b": 76
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 326m, avg 331m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (EASTERLY JUPITER and KOCATEPE) maintained close proximity (min 326m, avg 331m) for 390 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 1, 2026 16:33 UTC 95/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9396672 (FAIR STAR) LIBERIA
  • Minimum Distance: 86 meters
  • Average Distance: 89 meters
  • Duration: 6h 29m
  • Period: 2026-04-01T16:56:49+00:00 to 2026-04-01T23:26:45+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 86m, avg 88m) for 390 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 86m, avg 88m
Duration25/25Duration 390 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636022971,
        "imo": 9396672,
        "name": "FAIR STAR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 85.7000000000000028421709430404007434844970703125,
    "avg_distance_m": 88.5,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 389.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 23396,
    "speed_a_avg": 0,
    "speed_a_std": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-04-01T16:56:49+00:00",
        "end": "2026-04-01T23:26:45+00:00"
    },
    "points_count": {
        "vessel_a": 82,
        "vessel_b": 82
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 86m, avg 88m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and FAIR STAR) maintained close proximity (min 86m, avg 88m) for 390 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 1, 2026 16:32 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 83 AIS positions
  • Period: 2026-04-01T16:50:46+00:00 to 2026-04-01T23:26:45+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 396,
    "points_in_zone": 83,
    "first_point": {
        "ts": "2026-04-01T16:50:46+00:00",
        "lat": 34.70820169999999649235178367234766483306884765625,
        "lon": 33.3199316999999979316271492280066013336181640625
    },
    "last_point": {
        "ts": "2026-04-01T23:26:45+00:00",
        "lat": 34.7081850000000002864908310584723949432373046875,
        "lon": 33.31989829999999841447788639925420284271240234375
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 1, 2026 16:32 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 5 meters
  • Data Points: 83 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 396,
    "points": 83,
    "centroid": {
        "lat": 34.7081989746988028855412267148494720458984375,
        "lon": 33.3199079481927782353523070923984050750732421875
    },
    "bbox": {
        "min_lat": 34.70817170000000118079697131179273128509521484375,
        "min_lon": 33.31986500000000006593836587853729724884033203125,
        "max_lat": 34.70823829999999787787601235322654247283935546875,
        "max_lon": 33.31994329999999848723746254108846187591552734375
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Zone Dwell Istanbul Black Sea Surveillance Zone
Apr 1, 2026 15:02 UTC 80.0% ▼
  • Zone: Istanbul Black Sea Surveillance Zone
  • Duration: 6h 32m
  • Data Points: 74 AIS positions
  • Period: 2026-04-01T15:50:52+00:00 to 2026-04-01T22:23:48+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "dwell_minutes": 392.8999999999999772626324556767940521240234375,
    "points_in_zone": 74,
    "first_point": {
        "ts": "2026-04-01T15:50:52+00:00",
        "lat": 34.708179999999998699422576464712619781494140625,
        "lon": 33.31991000000000013869794202037155628204345703125
    },
    "last_point": {
        "ts": "2026-04-01T22:23:48+00:00",
        "lat": 34.70819000000000187355908565223217010498046875,
        "lon": 33.31987670000000179015842149965465068817138671875
    }
}
Methodology: 2026.01.18
Loiter Istanbul Black Sea Surveillance Zone
Apr 1, 2026 15:02 UTC 75.0% ▼
  • Duration: 6h 32m
  • Radius: 5 meters
  • Data Points: 74 AIS positions
  • Centroid: 34.7082, 33.3199
  • Zone: Istanbul Black Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.5,
    "duration_minutes": 392.8999999999999772626324556767940521240234375,
    "points": 74,
    "centroid": {
        "lat": 34.70819756756757357152309850789606571197509765625,
        "lon": 33.31991434459460066364044905640184879302978515625
    },
    "bbox": {
        "min_lat": 34.70817170000000118079697131179273128509521484375,
        "min_lon": 33.31987670000000179015842149965465068817138671875,
        "max_lat": 34.7082333000000033962351153604686260223388671875,
        "max_lon": 33.31995330000000166137397172860801219940185546875
    },
    "zone_id": "discovered_029"
}
Methodology: 2026.01.18
Sts Istanbul Black Sea Surveillance Zone
Apr 1, 2026 15:01 UTC 80/100 ▼
Vessel A: IMO 9274666 (KOCATEPE) Panama
Vessel B: IMO 9383962 (EASTERLY JUPITER) Marshall Is
  • Minimum Distance: 326 meters
  • Average Distance: 331 meters
  • Duration: 6h 30m
  • Period: 2026-04-01T15:53:48+00:00 to 2026-04-01T22:23:48+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Istanbul Black Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (KOCATEPE and EASTERLY JUPITER) maintained close proximity (min 326m, avg 331m) for 390 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 326m, avg 331m
Duration25/25Duration 390 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctions Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003673,
        "imo": 9274666,
        "name": "KOCATEPE",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 538010209,
        "imo": 9383962,
        "name": "EASTERLY JUPITER",
        "flag": "Marshall Is"
    },
    "min_distance_m": 326,
    "avg_distance_m": 330.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 2.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 390,
    "overlap_duration_s": 23400,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-04-01T15:53:48+00:00",
        "end": "2026-04-01T22:23:48+00:00"
    },
    "points_count": {
        "vessel_a": 73,
        "vessel_b": 73
    },
    "zone_id": "discovered_029",
    "zone_name": "Eastern Mediterranean Sanctions Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 326m, avg 331m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 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 Mediterranean Sanctions Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (KOCATEPE and EASTERLY JUPITER) maintained close proximity (min 326m, avg 331m) for 390 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 Mediterranean Sanctions Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18

Recent Position Data

Time (UTC) Lat Lon Speed Course Zone
Aug 25 03:48 36.4053 23.3866 11.6 kn 210.5° Laconian Gulf STS Zone
Aug 25 03:45 36.4115 23.3910 11.6 kn 210.4° Laconian Gulf STS Zone
Aug 25 03:34 36.4439 23.4137 11.6 kn 208.0° Laconian Gulf STS Zone
Aug 25 03:03 36.5345 23.4667 12.1 kn 200.8° Laconian Gulf STS Zone
Aug 25 03:02 36.5397 23.4691 12.2 kn 201.5° Laconian Gulf STS Zone
Aug 25 02:57 36.5556 23.4769 12.3 kn 201.5° Laconian Gulf STS Zone
Aug 25 02:55 36.5615 23.4798 12.3 kn 201.2° Laconian Gulf STS Zone
Aug 25 02:49 36.5792 23.4881 12.3 kn 198.3° Laconian Gulf STS Zone
Aug 25 02:48 36.5824 23.4894 12.3 kn 198.6° Laconian Gulf STS Zone
Aug 25 02:44 36.5948 23.4946 12.2 kn 198.1° Laconian Gulf STS Zone
Aug 25 02:40 36.6077 23.4998 12.2 kn 198.0° Laconian Gulf STS Zone
Aug 24 23:15 37.2001 23.6765 10.2 kn 184.0° Southern Black Sea Sanctioned Vessel Zone
Aug 24 22:12 37.3864 23.6938 11.2 kn 187.5° Southern Black Sea Sanctioned Vessel Zone
Aug 24 22:08 37.3968 23.6955 11.2 kn 187.1° Southern Black Sea Sanctioned Vessel Zone
Aug 24 22:04 37.4081 23.6972 11.2 kn 186.6° Southern Black Sea Sanctioned Vessel Zone
Aug 24 22:03 37.4112 23.6977 11.2 kn 187.2° Southern Black Sea Sanctioned Vessel Zone
Aug 24 22:01 37.4174 23.6986 11.2 kn 187.0° Southern Black Sea Sanctioned Vessel Zone
Aug 24 21:58 37.4268 23.7000 11.2 kn 186.4° Southern Black Sea Sanctioned Vessel Zone
Aug 24 21:57 37.4299 23.7005 11.2 kn 187.4° Southern Black Sea Sanctioned Vessel Zone
Aug 24 21:55 37.4366 23.7016 11.2 kn 187.3° Southern Black Sea Sanctioned Vessel Zone

Showing 20 of 100 recent positions.

Data Source

Vessel observed through FleetLeaks' AIS monitoring system in zones of interest. Identity and position data derived from AIS broadcasts and public maritime databases.

Disclaimer: AIS data can be spoofed or falsified. Vessel identities should be independently verified before making compliance decisions.