LYDIA KA

IMO 9314844

Vessel information

Vessel Name LYDIA KA
IMO Number 9314844
MMSI 538011104
Vessel Type Tanker
Flag 🏳️ Marshall Is
Call Sign V7A6590
Length 183 m
Beam 27 m

Detected Events (100)

Ais Gap🛰️✗ North Sea Monitoring Zone
Aug 27, 2026 17:11 UTC 70.0%
  • Gap Duration: 5h 24m
  • Last Seen: 2026-08-27T17:11:22+00:00 at 36.5568, 26.6376 (Zone: North Sea Monitoring Zone)
  • Next Seen: 2026-08-27T22:35:51+00:00 at 35.8450, 27.4147

🛰️ 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: 2026-08-27T22:45:02.042033+00:00

Show Raw Evidence JSON
{
    "gap_minutes": 324.5,
    "last_seen": {
        "ts": "2026-08-27T17:11:22+00:00",
        "lat": 36.556798299999996970655047334730625152587890625,
        "lon": 26.63764499999999912915882305242121219635009765625,
        "sog": 10.699999999999999289457264239899814128875732421875,
        "zone_id": "discovered_120"
    },
    "next_seen": {
        "ts": "2026-08-27T22:35:51+00:00",
        "lat": 35.84502330000000114296199171803891658782958984375,
        "lon": 27.41472830000000016070771380327641963958740234375,
        "zone_ids": [
            "discovered_093"
        ]
    },
    "gap_enrichment": {
        "status": "not_found",
        "corridor": {
            "start": {
                "lat": 36.556798299999996970655047334730625152587890625,
                "lon": 26.63764499999999912915882305242121219635009765625,
                "ts": "2026-08-27T17:11:22+00:00"
            },
            "end": {
                "lat": 35.84502330000000114296199171803891658782958984375,
                "lon": 27.41472830000000016070771380327641963958740234375,
                "ts": "2026-08-27T22:35:51+00:00"
            },
            "bbox": {
                "min_lat": 35.66484299999999763031155453063547611236572265625,
                "min_lon": 26.414359999999998507291820715181529521942138671875,
                "max_lat": 36.73697800000000057707438827492296695709228515625,
                "max_lon": 27.638013000000000829459168016910552978515625
            },
            "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": "2026-08-27T22:45:02.042033+00:00"
    }
}
Methodology: 2026.01.18
Zone Dwell North Sea Monitoring Zone
Aug 27, 2026 15:35 UTC 80.0%
  • Zone: North Sea Monitoring Zone
  • Duration: 1h 35m
  • Data Points: 18 AIS positions
  • Period: 2026-08-27T15:35:32+00:00 to 2026-08-27T17:11:22+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_120",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 95.7999999999999971578290569595992565155029296875,
    "points_in_zone": 18,
    "first_point": {
        "ts": "2026-08-27T15:35:32+00:00",
        "lat": 36.77896170000000353184077539481222629547119140625,
        "lon": 26.402576700000000897716745384968817234039306640625
    },
    "last_point": {
        "ts": "2026-08-27T17:11:22+00:00",
        "lat": 36.556798299999996970655047334730625152587890625,
        "lon": 26.63764499999999912915882305242121219635009765625
    }
}
Methodology: 2026.01.18
Zone Dwell North Sea Monitoring Zone
Aug 27, 2026 14:05 UTC 80.0%
  • Zone: North Sea Monitoring Zone
  • Duration: 3h 5m
  • Data Points: 22 AIS positions
  • Period: 2026-08-27T14:05:41+00:00 to 2026-08-27T17:11:22+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_120",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 185.69999999999998863131622783839702606201171875,
    "points_in_zone": 22,
    "first_point": {
        "ts": "2026-08-27T14:05:41+00:00",
        "lat": 36.99871499999999713281795266084372997283935546875,
        "lon": 26.179359999999999075726009323261678218841552734375
    },
    "last_point": {
        "ts": "2026-08-27T17:11:22+00:00",
        "lat": 36.556798299999996970655047334730625152587890625,
        "lon": 26.63764499999999912915882305242121219635009765625
    }
}
Methodology: 2026.01.18
Zone Dwell North Sea Monitoring Zone
Aug 27, 2026 13:03 UTC 80.0%
  • Zone: North Sea Monitoring Zone
  • Duration: 4h 7m
  • Data Points: 39 AIS positions
  • Period: 2026-08-27T13:03:41+00:00 to 2026-08-27T17:11:22+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_120",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 247.69999999999998863131622783839702606201171875,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-08-27T13:03:41+00:00",
        "lat": 37.1652433000000002039087121374905109405517578125,
        "lon": 26.06797329999999845995262148790061473846435546875
    },
    "last_point": {
        "ts": "2026-08-27T17:11:22+00:00",
        "lat": 36.556798299999996970655047334730625152587890625,
        "lon": 26.63764499999999912915882305242121219635009765625
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_109
Aug 27, 2026 12:01 UTC 80.0%
  • Zone: discovered_109
  • Duration: 1h 49m
  • Data Points: 37 AIS positions
  • Period: 2026-08-27T12:01:31+00:00 to 2026-08-27T13:51:01+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_109",
    "zone_name": "Norwegian Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 109.5,
    "points_in_zone": 37,
    "first_point": {
        "ts": "2026-08-27T12:01:31+00:00",
        "lat": 37.325888300000002573142410255968570709228515625,
        "lon": 25.942923300000000352838469552807509899139404296875
    },
    "last_point": {
        "ts": "2026-08-27T13:51:01+00:00",
        "lat": 37.03841829999999646361175109632313251495361328125,
        "lon": 26.1530766999999997324266587384045124053955078125
    }
}
Methodology: 2026.01.18
Zone Dwell North Sea Monitoring Zone
Aug 27, 2026 12:01 UTC 80.0%
  • Zone: North Sea Monitoring Zone
  • Duration: 5h 9m
  • Data Points: 59 AIS positions
  • Period: 2026-08-27T12:01:31+00:00 to 2026-08-27T17:11:22+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_120",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 309.8999999999999772626324556767940521240234375,
    "points_in_zone": 59,
    "first_point": {
        "ts": "2026-08-27T12:01:31+00:00",
        "lat": 37.325888300000002573142410255968570709228515625,
        "lon": 25.942923300000000352838469552807509899139404296875
    },
    "last_point": {
        "ts": "2026-08-27T17:11:22+00:00",
        "lat": 36.556798299999996970655047334730625152587890625,
        "lon": 26.63764499999999912915882305242121219635009765625
    }
}
Methodology: 2026.01.18
Zone Dwell North Sea Monitoring Zone
Aug 27, 2026 11:51 UTC 80.0%
  • Zone: North Sea Monitoring Zone
  • Duration: 5h 20m
  • Data Points: 60 AIS positions
  • Period: 2026-08-27T11:51:11+00:00 to 2026-08-27T17:11:22+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_120",
    "zone_name": "North Sea Monitoring Zone",
    "dwell_minutes": 320.19999999999998863131622783839702606201171875,
    "points_in_zone": 60,
    "first_point": {
        "ts": "2026-08-27T11:51:11+00:00",
        "lat": 37.352751699999998891144059598445892333984375,
        "lon": 25.92259500000000116415321826934814453125
    },
    "last_point": {
        "ts": "2026-08-27T17:11:22+00:00",
        "lat": 36.556798299999996970655047334730625152587890625,
        "lon": 26.63764499999999912915882305242121219635009765625
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_109
Aug 27, 2026 11:05 UTC 80.0%
  • Zone: discovered_109
  • Duration: 2h 46m
  • Data Points: 54 AIS positions
  • Period: 2026-08-27T11:05:01+00:00 to 2026-08-27T13:51:01+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_109",
    "zone_name": "Norwegian Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 166,
    "points_in_zone": 54,
    "first_point": {
        "ts": "2026-08-27T11:05:01+00:00",
        "lat": 37.4714383000000026413545128889381885528564453125,
        "lon": 25.839065000000001504076863056980073451995849609375
    },
    "last_point": {
        "ts": "2026-08-27T13:51:01+00:00",
        "lat": 37.03841829999999646361175109632313251495361328125,
        "lon": 26.1530766999999997324266587384045124053955078125
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_109
Aug 27, 2026 10:07 UTC 80.0%
  • Zone: discovered_109
  • Duration: 3h 43m
  • Data Points: 65 AIS positions
  • Period: 2026-08-27T10:07:51+00:00 to 2026-08-27T13:51:01+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_109",
    "zone_name": "Norwegian Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 223.19999999999998863131622783839702606201171875,
    "points_in_zone": 65,
    "first_point": {
        "ts": "2026-08-27T10:07:51+00:00",
        "lat": 37.62873669999999748370100860483944416046142578125,
        "lon": 25.758661700000001104626790038309991359710693359375
    },
    "last_point": {
        "ts": "2026-08-27T13:51:01+00:00",
        "lat": 37.03841829999999646361175109632313251495361328125,
        "lon": 26.1530766999999997324266587384045124053955078125
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_109
Aug 27, 2026 09:51 UTC 80.0%
  • Zone: discovered_109
  • Duration: 3h 59m
  • Data Points: 68 AIS positions
  • Period: 2026-08-27T09:51:11+00:00 to 2026-08-27T13:51:01+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_109",
    "zone_name": "Norwegian Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 239.80000000000001136868377216160297393798828125,
    "points_in_zone": 68,
    "first_point": {
        "ts": "2026-08-27T09:51:11+00:00",
        "lat": 37.67627999999999843794284970499575138092041015625,
        "lon": 25.73737330000000156360329128801822662353515625
    },
    "last_point": {
        "ts": "2026-08-27T13:51:01+00:00",
        "lat": 37.03841829999999646361175109632313251495361328125,
        "lon": 26.1530766999999997324266587384045124053955078125
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 25, 2026 09:08 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 1h 49m
  • Data Points: 28 AIS positions
  • Period: 2026-08-25T09:08:35+00:00 to 2026-08-25T10:57:52+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 109.2999999999999971578290569595992565155029296875,
    "points_in_zone": 28,
    "first_point": {
        "ts": "2026-08-25T09:08:35+00:00",
        "lat": 40.948606699999999136707629077136516571044921875,
        "lon": 28.743283300000001645457814447581768035888671875
    },
    "last_point": {
        "ts": "2026-08-25T10:57:52+00:00",
        "lat": 40.88035330000000300287865684367716312408447265625,
        "lon": 28.5071149999999988722265698015689849853515625
    }
}
Methodology: 2026.01.18
Sts Bosphorus/Dardanelles Approach
Aug 25, 2026 08:29 UTC 55/100
Vessel A: IMO 8727939 (NAVIGER 5) RUSSIA
Vessel B: IMO 9314844 (LYDIA KA) Marshall Is
  • Minimum Distance: 467 meters
  • Average Distance: 474 meters
  • Duration: 39 minutes
  • Period: 2026-08-25T08:32:38+00:00 to 2026-08-25T09:11:37+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 55/100

Low-confidence STS candidate - may warrant review. Two tankers (NAVIGER 5 and LYDIA KA) maintained close proximity (min 467m, avg 474m) for 39 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 467m, avg 474m
Duration5/25Duration 39 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±10m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273345600,
        "imo": 8727939,
        "name": "NAVIGER 5",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 538011104,
        "imo": 9314844,
        "name": "LYDIA KA",
        "flag": "Marshall Is"
    },
    "min_distance_m": 466.8999999999999772626324556767940521240234375,
    "avg_distance_m": 474.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 10,
    "duration_minutes": 39,
    "overlap_duration_s": 2339,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-25T08:32:38+00:00",
        "end": "2026-08-25T09:11:37+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 55,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 467m, avg 474m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 39 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b110m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Low-confidence STS candidate - may warrant review. Two tankers (NAVIGER 5 and LYDIA KA) maintained close proximity (min 467m, avg 474m) for 39 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts🛰️? Bosphorus/Dardanelles Approach
Aug 25, 2026 08:04 UTC 55/100
Vessel A: INTEGRATOR (INTEGRATOR) RUSSIA
Vessel B: IMO 9314844 (LYDIA KA) Marshall Is
  • Minimum Distance: 479 meters
  • Average Distance: 484 meters
  • Duration: 33 minutes
  • Period: 2026-08-25T08:04:22+00:00 to 2026-08-25T08:38:12+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 55/100

Low-confidence STS candidate - may warrant review. Two tankers (INTEGRATOR and LYDIA KA) maintained close proximity (min 478m, avg 484m) for 34 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 478m, avg 484m
Duration5/25Duration 34 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±4m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1D_IW_GRDH_1SDV_20260825T041347_20260825T041412_004277_007DED_EF2B_COG • Acquired: 2026-08-25T04:13:47.435068Z • Platform: sentinel-1d

Searched: 2026-08-25T14:45:10.971630+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273275360,
        "imo": 9436941,
        "name": "INTEGRATOR",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 538011104,
        "imo": 9314844,
        "name": "LYDIA KA",
        "flag": "Marshall Is"
    },
    "min_distance_m": 478.5,
    "avg_distance_m": 484.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 4.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 33.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 2030,
    "speed_a_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-25T08:04:22+00:00",
        "end": "2026-08-25T08:38:12+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 55,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 478m, avg 484m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 34 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Low-confidence STS candidate - may warrant review. Two tankers (INTEGRATOR and LYDIA KA) maintained close proximity (min 478m, avg 484m) for 34 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 40.94593830000000167501639225520193576812744140625,
            "lon": 28.743138200000000637146513327024877071380615234375
        },
        "time_window": {
            "start_ts": "2026-08-25T08:04:22+00:00",
            "end_ts": "2026-08-25T08:38:12+00:00"
        },
        "searched_at": "2026-08-25T14:45:10.971630+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260825T041347_20260825T041412_004277_007DED_EF2B_COG",
        "scene_datetime": "2026-08-25T04:13:47.435068Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 26.1133209999999991168806445784866809844970703125,
            "min_lat": 40.40303800000000222780727199278771877288818359375,
            "max_lon": 29.58188799999999929468685877509415149688720703125,
            "max_lat": 42.31227100000000262980393017642199993133544921875
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1124553_thumbnail_20260825144516.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1124553_thumbnail_20260825144516.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 25, 2026 08:02 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 2h 55m
  • Data Points: 31 AIS positions
  • Period: 2026-08-25T08:02:35+00:00 to 2026-08-25T10:57:52+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 175.30000000000001136868377216160297393798828125,
    "points_in_zone": 31,
    "first_point": {
        "ts": "2026-08-25T08:02:35+00:00",
        "lat": 40.94781830000000155678208102472126483917236328125,
        "lon": 28.74200330000000036534402170218527317047119140625
    },
    "last_point": {
        "ts": "2026-08-25T10:57:52+00:00",
        "lat": 40.88035330000000300287865684367716312408447265625,
        "lon": 28.5071149999999988722265698015689849853515625
    }
}
Methodology: 2026.01.18
Sts🛰️? Bosphorus/Dardanelles Approach
Aug 25, 2026 07:56 UTC 55/100
Vessel A: INTEGRATOR (INTEGRATOR) RUSSIA
Vessel B: IMO 9314844 (LYDIA KA) Marshall Is
  • Minimum Distance: 479 meters
  • Average Distance: 485 meters
  • Duration: 38 minutes
  • Period: 2026-08-25T07:59:22+00:00 to 2026-08-25T08:38:12+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 55/100

Low-confidence STS candidate - may warrant review. Two tankers (INTEGRATOR and LYDIA KA) maintained close proximity (min 478m, avg 485m) for 39 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 478m, avg 485m
Duration5/25Duration 39 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±5m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1D_IW_GRDH_1SDV_20260825T041347_20260825T041412_004277_007DED_EF2B_COG • Acquired: 2026-08-25T04:13:47.435068Z • Platform: sentinel-1d

Searched: 2026-08-25T09:15:04.788077+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273275360,
        "imo": 9436941,
        "name": "INTEGRATOR",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 538011104,
        "imo": 9314844,
        "name": "LYDIA KA",
        "flag": "Marshall Is"
    },
    "min_distance_m": 478.5,
    "avg_distance_m": 484.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 5.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 38.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 2330,
    "speed_a_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-08-25T07:59:22+00:00",
        "end": "2026-08-25T08:38:12+00:00"
    },
    "points_count": {
        "vessel_a": 14,
        "vessel_b": 14
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 55,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 478m, avg 485m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 39 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Low-confidence STS candidate - may warrant review. Two tankers (INTEGRATOR and LYDIA KA) maintained close proximity (min 478m, avg 485m) for 39 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 40.94588040000000006557456799782812595367431640625,
            "lon": 28.742903299999998267821865738369524478912353515625
        },
        "time_window": {
            "start_ts": "2026-08-25T07:56:40+00:00",
            "end_ts": "2026-08-25T08:38:12+00:00"
        },
        "searched_at": "2026-08-25T09:15:04.788077+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260825T041347_20260825T041412_004277_007DED_EF2B_COG",
        "scene_datetime": "2026-08-25T04:13:47.435068Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 26.1133209999999991168806445784866809844970703125,
            "min_lat": 40.40303800000000222780727199278771877288818359375,
            "max_lon": 29.58188799999999929468685877509415149688720703125,
            "max_lat": 42.31227100000000262980393017642199993133544921875
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1122271_thumbnail_20260825091509.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1122271_thumbnail_20260825091509.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 25, 2026 07:11 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 3h 46m
  • Data Points: 36 AIS positions
  • Period: 2026-08-25T07:11:38+00:00 to 2026-08-25T10:57:52+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 226.19999999999998863131622783839702606201171875,
    "points_in_zone": 36,
    "first_point": {
        "ts": "2026-08-25T07:11:38+00:00",
        "lat": 40.94792830000000094514689408242702484130859375,
        "lon": 28.74199829999999877827576710842549800872802734375
    },
    "last_point": {
        "ts": "2026-08-25T10:57:52+00:00",
        "lat": 40.88035330000000300287865684367716312408447265625,
        "lon": 28.5071149999999988722265698015689849853515625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 25, 2026 07:11 UTC 75.0%
  • Duration: 2h 26m
  • Radius: 1,076 meters
  • Data Points: 13 AIS positions
  • Centroid: 40.9475, 28.7411
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 1075.90000000000009094947017729282379150390625,
    "duration_minutes": 146.900000000000005684341886080801486968994140625,
    "points": 13,
    "centroid": {
        "lat": 40.94753320000000229583747568540275096893310546875,
        "lon": 28.741081015384619234964702627621591091156005859375
    },
    "bbox": {
        "min_lat": 40.93989330000000137488314067013561725616455078125,
        "min_lon": 28.73322329999999880101313465274870395660400390625,
        "max_lat": 40.95140669999999971651050145737826824188232421875,
        "max_lon": 28.743403300000000655245457892306149005889892578125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 25, 2026 06:11 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 4h 46m
  • Data Points: 39 AIS positions
  • Period: 2026-08-25T06:11:34+00:00 to 2026-08-25T10:57:52+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 286.30000000000001136868377216160297393798828125,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-08-25T06:11:34+00:00",
        "lat": 40.947890000000001009539118967950344085693359375,
        "lon": 28.741588300000000089085006038658320903778076171875
    },
    "last_point": {
        "ts": "2026-08-25T10:57:52+00:00",
        "lat": 40.88035330000000300287865684367716312408447265625,
        "lon": 28.5071149999999988722265698015689849853515625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 25, 2026 06:11 UTC 75.0%
  • Duration: 3h 27m
  • Radius: 1,087 meters
  • Data Points: 16 AIS positions
  • Centroid: 40.9476, 28.7412
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 1087.09999999999990905052982270717620849609375,
    "duration_minutes": 207,
    "points": 16,
    "centroid": {
        "lat": 40.94760530625000427562554250471293926239013671875,
        "lon": 28.7411742562500052144969231449067592620849609375
    },
    "bbox": {
        "min_lat": 40.93989330000000137488314067013561725616455078125,
        "min_lon": 28.73322329999999880101313465274870395660400390625,
        "max_lat": 40.95140669999999971651050145737826824188232421875,
        "max_lon": 28.743403300000000655245457892306149005889892578125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts🛰️? Bosphorus/Dardanelles Approach
Aug 25, 2026 05:08 UTC 55/100
Vessel A: IMO 9314844 (LYDIA KA) Marshall Is
Vessel B: IMO 8727939 (NAVIGER 5) RUSSIA
  • Minimum Distance: 476 meters
  • Average Distance: 488 meters
  • Duration: 33 minutes
  • Period: 2026-08-25T05:08:33+00:00 to 2026-08-25T05:41:39+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 55/100

Low-confidence STS candidate - may warrant review. Two tankers (LYDIA KA and NAVIGER 5) maintained close proximity (min 476m, avg 488m) for 33 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 476m, avg 488m
Duration5/25Duration 33 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±8m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1D_IW_GRDH_1SDV_20260825T041347_20260825T041412_004277_007DED_EF2B_COG • Acquired: 2026-08-25T04:13:47.435068Z • Platform: sentinel-1d

Searched: 2026-08-25T11:30:07.470692+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538011104,
        "imo": 9314844,
        "name": "LYDIA KA",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 273345600,
        "imo": 8727939,
        "name": "NAVIGER 5",
        "flag": "RUSSIA"
    },
    "min_distance_m": 476.1000000000000227373675443232059478759765625,
    "avg_distance_m": 487.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 8.199999999999999289457264239899814128875732421875,
    "duration_minutes": 33.10000000000000142108547152020037174224853515625,
    "overlap_duration_s": 1986,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-25T05:08:33+00:00",
        "end": "2026-08-25T05:41:39+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 55,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 476m, avg 488m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 33 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b18m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Low-confidence STS candidate - may warrant review. Two tankers (LYDIA KA and NAVIGER 5) maintained close proximity (min 476m, avg 488m) for 33 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 40.94742360000000047648427425883710384368896484375,
            "lon": 28.745501600000000763657226343639194965362548828125
        },
        "time_window": {
            "start_ts": "2026-08-25T05:08:33+00:00",
            "end_ts": "2026-08-25T05:41:39+00:00"
        },
        "searched_at": "2026-08-25T11:30:07.470692+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260825T041347_20260825T041412_004277_007DED_EF2B_COG",
        "scene_datetime": "2026-08-25T04:13:47.435068Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 26.1133209999999991168806445784866809844970703125,
            "min_lat": 40.40303800000000222780727199278771877288818359375,
            "max_lon": 29.58188799999999929468685877509415149688720703125,
            "max_lat": 42.31227100000000262980393017642199993133544921875
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1123218_thumbnail_20260825113011.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1123218_thumbnail_20260825113011.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 25, 2026 05:08 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 5h 49m
  • Data Points: 48 AIS positions
  • Period: 2026-08-25T05:08:33+00:00 to 2026-08-25T10:57:52+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 349.30000000000001136868377216160297393798828125,
    "points_in_zone": 48,
    "first_point": {
        "ts": "2026-08-25T05:08:33+00:00",
        "lat": 40.94803999999999888359525357373058795928955078125,
        "lon": 28.7430599999999998317434801720082759857177734375
    },
    "last_point": {
        "ts": "2026-08-25T10:57:52+00:00",
        "lat": 40.88035330000000300287865684367716312408447265625,
        "lon": 28.5071149999999988722265698015689849853515625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 25, 2026 05:08 UTC 75.0%
  • Duration: 4h 30m
  • Radius: 1,121 meters
  • Data Points: 25 AIS positions
  • Centroid: 40.9477, 28.7416
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 1121,
    "duration_minutes": 270,
    "points": 25,
    "centroid": {
        "lat": 40.94772933200000153419750859029591083526611328125,
        "lon": 28.741614919999992849852787912823259830474853515625
    },
    "bbox": {
        "min_lat": 40.93989330000000137488314067013561725616455078125,
        "min_lon": 28.73322329999999880101313465274870395660400390625,
        "max_lat": 40.95140669999999971651050145737826824188232421875,
        "max_lon": 28.743403300000000655245457892306149005889892578125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts🛰️? Bosphorus/Dardanelles Approach
Aug 25, 2026 04:59 UTC 55/100
Vessel A: IMO 9314844 (LYDIA KA) Marshall Is
Vessel B: IMO 8727939 (NAVIGER 5) RUSSIA
  • Minimum Distance: 475 meters
  • Average Distance: 486 meters
  • Duration: 42 minutes
  • Period: 2026-08-25T04:59:35+00:00 to 2026-08-25T05:41:39+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 55/100

Low-confidence STS candidate - may warrant review. Two tankers (LYDIA KA and NAVIGER 5) maintained close proximity (min 475m, avg 486m) for 42 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 475m, avg 486m
Duration5/25Duration 42 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±9m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1D_IW_GRDH_1SDV_20260825T041347_20260825T041412_004277_007DED_EF2B_COG • Acquired: 2026-08-25T04:13:47.435068Z • Platform: sentinel-1d

Searched: 2026-08-25T06:00:12.259027+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538011104,
        "imo": 9314844,
        "name": "LYDIA KA",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 273345600,
        "imo": 8727939,
        "name": "NAVIGER 5",
        "flag": "RUSSIA"
    },
    "min_distance_m": 474.8999999999999772626324556767940521240234375,
    "avg_distance_m": 485.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 8.9000000000000003552713678800500929355621337890625,
    "duration_minutes": 42.10000000000000142108547152020037174224853515625,
    "overlap_duration_s": 2524,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-25T04:59:35+00:00",
        "end": "2026-08-25T05:41:39+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 55,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 475m, avg 486m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 42 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b19m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Low-confidence STS candidate - may warrant review. Two tankers (LYDIA KA and NAVIGER 5) maintained close proximity (min 475m, avg 486m) for 42 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 40.947430400000001782245817594230175018310546875,
            "lon": 28.745569499999998441808202187530696392059326171875
        },
        "time_window": {
            "start_ts": "2026-08-25T04:59:35+00:00",
            "end_ts": "2026-08-25T05:41:39+00:00"
        },
        "searched_at": "2026-08-25T06:00:12.259027+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260825T041347_20260825T041412_004277_007DED_EF2B_COG",
        "scene_datetime": "2026-08-25T04:13:47.435068Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 26.1133209999999991168806445784866809844970703125,
            "min_lat": 40.40303800000000222780727199278771877288818359375,
            "max_lon": 29.58188799999999929468685877509415149688720703125,
            "max_lat": 42.31227100000000262980393017642199993133544921875
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1120911_thumbnail_20260825060016.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1120911_thumbnail_20260825060016.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 25, 2026 04:20 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 37m
  • Data Points: 53 AIS positions
  • Period: 2026-08-25T04:20:33+00:00 to 2026-08-25T10:57:52+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 397.30000000000001136868377216160297393798828125,
    "points_in_zone": 53,
    "first_point": {
        "ts": "2026-08-25T04:20:33+00:00",
        "lat": 40.9478916999999995596226654015481472015380859375,
        "lon": 28.742688300000001078160494216717779636383056640625
    },
    "last_point": {
        "ts": "2026-08-25T10:57:52+00:00",
        "lat": 40.88035330000000300287865684367716312408447265625,
        "lon": 28.5071149999999988722265698015689849853515625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 25, 2026 04:20 UTC 75.0%
  • Duration: 5h 18m
  • Radius: 1,136 meters
  • Data Points: 30 AIS positions
  • Centroid: 40.9478, 28.7418
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 1135.90000000000009094947017729282379150390625,
    "duration_minutes": 318,
    "points": 30,
    "centroid": {
        "lat": 40.94775955666666078514026594348251819610595703125,
        "lon": 28.7418459299999966560790198855102062225341796875
    },
    "bbox": {
        "min_lat": 40.93989330000000137488314067013561725616455078125,
        "min_lon": 28.73322329999999880101313465274870395660400390625,
        "max_lat": 40.95140669999999971651050145737826824188232421875,
        "max_lon": 28.743403300000000655245457892306149005889892578125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts🛰️? Bosphorus/Dardanelles Approach
Aug 25, 2026 03:59 UTC 55/100
Vessel A: IMO 8727939 (NAVIGER 5) RUSSIA
Vessel B: IMO 9314844 (LYDIA KA) Marshall Is
  • Minimum Distance: 464 meters
  • Average Distance: 481 meters
  • Duration: 36 minutes
  • Period: 2026-08-25T03:59:37+00:00 to 2026-08-25T04:35:37+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 55/100

Low-confidence STS candidate - may warrant review. Two tankers (NAVIGER 5 and LYDIA KA) maintained close proximity (min 464m, avg 481m) for 36 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 464m, avg 481m
Duration5/25Duration 36 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±11m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1D_IW_GRDH_1SDV_20260825T041347_20260825T041412_004277_007DED_EF2B_COG • Acquired: 2026-08-25T04:13:47.435068Z • Platform: sentinel-1d

Searched: 2026-08-25T06:15:07.880892+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273345600,
        "imo": 8727939,
        "name": "NAVIGER 5",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 538011104,
        "imo": 9314844,
        "name": "LYDIA KA",
        "flag": "Marshall Is"
    },
    "min_distance_m": 464.19999999999998863131622783839702606201171875,
    "avg_distance_m": 480.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 11.0999999999999996447286321199499070644378662109375,
    "duration_minutes": 36,
    "overlap_duration_s": 2160,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-08-25T03:59:37+00:00",
        "end": "2026-08-25T04:35:37+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 55,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 464m, avg 481m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 36 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b111m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Low-confidence STS candidate - may warrant review. Two tankers (NAVIGER 5 and LYDIA KA) maintained close proximity (min 464m, avg 481m) for 36 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 40.9473851999999993722667568363249301910400390625,
            "lon": 28.74538319999999913534338702447712421417236328125
        },
        "time_window": {
            "start_ts": "2026-08-25T03:59:37+00:00",
            "end_ts": "2026-08-25T04:35:37+00:00"
        },
        "searched_at": "2026-08-25T06:15:07.880892+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260825T041347_20260825T041412_004277_007DED_EF2B_COG",
        "scene_datetime": "2026-08-25T04:13:47.435068Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 26.1133209999999991168806445784866809844970703125,
            "min_lat": 40.40303800000000222780727199278771877288818359375,
            "max_lon": 29.58188799999999929468685877509415149688720703125,
            "max_lat": 42.31227100000000262980393017642199993133544921875
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1120926_thumbnail_20260825061511.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1120926_thumbnail_20260825061511.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 25, 2026 03:08 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 29m
  • Data Points: 43 AIS positions
  • Period: 2026-08-25T03:59:34+00:00 to 2026-08-25T10:28:32+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 389,
    "points_in_zone": 43,
    "first_point": {
        "ts": "2026-08-25T03:59:34+00:00",
        "lat": 40.94787500000000335376171278767287731170654296875,
        "lon": 28.742278299999998836256054346449673175811767578125
    },
    "last_point": {
        "ts": "2026-08-25T10:28:32+00:00",
        "lat": 40.8969383000000021866071620024740695953369140625,
        "lon": 28.6112667000000016059857443906366825103759765625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 25, 2026 03:08 UTC 75.0%
  • Duration: 6h 29m
  • Radius: 1,152 meters
  • Data Points: 39 AIS positions
  • Centroid: 40.9478, 28.7420
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 1151.5,
    "duration_minutes": 389.8999999999999772626324556767940521240234375,
    "points": 39,
    "centroid": {
        "lat": 40.94782927435897335044501232914626598358154296875,
        "lon": 28.742023625641021311594158760271966457366943359375
    },
    "bbox": {
        "min_lat": 40.93989330000000137488314067013561725616455078125,
        "min_lon": 28.73322329999999880101313465274870395660400390625,
        "max_lat": 40.95140669999999971651050145737826824188232421875,
        "max_lon": 28.743403300000000655245457892306149005889892578125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 25, 2026 02:02 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 36m
  • Data Points: 39 AIS positions
  • Period: 2026-08-25T02:50:40+00:00 to 2026-08-25T09:27:22+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 396.69999999999998863131622783839702606201171875,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-08-25T02:50:40+00:00",
        "lat": 40.947890000000001009539118967950344085693359375,
        "lon": 28.742443300000001471516952733509242534637451171875
    },
    "last_point": {
        "ts": "2026-08-25T09:27:22+00:00",
        "lat": 40.95140669999999971651050145737826824188232421875,
        "lon": 28.74210000000000064801497501321136951446533203125
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 25, 2026 02:02 UTC 75.0%
  • Duration: 6h 36m
  • Radius: 363 meters
  • Data Points: 39 AIS positions
  • Centroid: 40.9481, 28.7425
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 363.1000000000000227373675443232059478759765625,
    "duration_minutes": 396.69999999999998863131622783839702606201171875,
    "points": 39,
    "centroid": {
        "lat": 40.94814820769230578889619209803640842437744140625,
        "lon": 28.74245294358973268344925600104033946990966796875
    },
    "bbox": {
        "min_lat": 40.947800000000000864019966684281826019287109375,
        "min_lon": 28.74151330000000115205693873576819896697998046875,
        "max_lat": 40.95140669999999971651050145737826824188232421875,
        "max_lon": 28.743403300000000655245457892306149005889892578125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 25, 2026 01:05 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 39m
  • Data Points: 43 AIS positions
  • Period: 2026-08-25T01:50:40+00:00 to 2026-08-25T08:29:41+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 399,
    "points_in_zone": 43,
    "first_point": {
        "ts": "2026-08-25T01:50:40+00:00",
        "lat": 40.947851700000001073931343853473663330078125,
        "lon": 28.741736700000000581667336518876254558563232421875
    },
    "last_point": {
        "ts": "2026-08-25T08:29:41+00:00",
        "lat": 40.94818500000000227601049118675291538238525390625,
        "lon": 28.74273000000000166664904099889099597930908203125
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 25, 2026 01:05 UTC 75.0%
  • Duration: 6h 39m
  • Radius: 74 meters
  • Data Points: 43 AIS positions
  • Centroid: 40.9480, 28.7424
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 74.099999999999994315658113919198513031005859375,
    "duration_minutes": 399,
    "points": 43,
    "centroid": {
        "lat": 40.94798039069767270348165766336023807525634765625,
        "lon": 28.7423749953488396613465738482773303985595703125
    },
    "bbox": {
        "min_lat": 40.947800000000000864019966684281826019287109375,
        "min_lon": 28.74151330000000115205693873576819896697998046875,
        "max_lat": 40.9482167000000032430762075819075107574462890625,
        "max_lon": 28.74325329999999922847564448602497577667236328125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 25, 2026 00:02 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 20m
  • Data Points: 44 AIS positions
  • Period: 2026-08-25T00:56:40+00:00 to 2026-08-25T07:17:34+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 380.8999999999999772626324556767940521240234375,
    "points_in_zone": 44,
    "first_point": {
        "ts": "2026-08-25T00:56:40+00:00",
        "lat": 40.94799330000000026075213099829852581024169921875,
        "lon": 28.741871700000000799946064944379031658172607421875
    },
    "last_point": {
        "ts": "2026-08-25T07:17:34+00:00",
        "lat": 40.9479682999999994308382156305015087127685546875,
        "lon": 28.7421216999999984409441822208464145660400390625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 25, 2026 00:02 UTC 75.0%
  • Duration: 6h 20m
  • Radius: 81 meters
  • Data Points: 44 AIS positions
  • Centroid: 40.9480, 28.7423
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 81.2000000000000028421709430404007434844970703125,
    "duration_minutes": 380.8999999999999772626324556767940521240234375,
    "points": 44,
    "centroid": {
        "lat": 40.94797435909089955430317786522209644317626953125,
        "lon": 28.742291325000000057343640946783125400543212890625
    },
    "bbox": {
        "min_lat": 40.947800000000000864019966684281826019287109375,
        "min_lon": 28.741371699999998412522472790442407131195068359375,
        "max_lat": 40.94816999999999751480572740547358989715576171875,
        "max_lon": 28.74325329999999922847564448602497577667236328125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts🛰️? Bosphorus/Dardanelles Approach
Aug 24, 2026 23:38 UTC 65/100
Vessel A: IMO 8727939 (NAVIGER 5) RUSSIA
Vessel B: IMO 9314844 (LYDIA KA) Marshall Is
  • Minimum Distance: 421 meters
  • Average Distance: 447 meters
  • Duration: 1h 3m
  • Period: 2026-08-24T23:38:37+00:00 to 2026-08-25T00:41:36+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (NAVIGER 5 and LYDIA KA) maintained close proximity (min 420m, avg 447m) for 63 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 420m, avg 447m
Duration15/25Duration 63 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±21m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1D_IW_GRDH_1SDV_20260825T041347_20260825T041412_004277_007DED_EF2B_COG • Acquired: 2026-08-25T04:13:47.435068Z • Platform: sentinel-1d

Searched: 2026-08-25T06:15:02.057324+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273345600,
        "imo": 8727939,
        "name": "NAVIGER 5",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 538011104,
        "imo": 9314844,
        "name": "LYDIA KA",
        "flag": "Marshall Is"
    },
    "min_distance_m": 420.5,
    "avg_distance_m": 447.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 20.60000000000000142108547152020037174224853515625,
    "duration_minutes": 63,
    "overlap_duration_s": 3779,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-24T23:38:37+00:00",
        "end": "2026-08-25T00:41:36+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 420m, avg 447m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 63 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b121m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (NAVIGER 5 and LYDIA KA) maintained close proximity (min 420m, avg 447m) for 63 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 40.947511300000002165688783861696720123291015625,
            "lon": 28.745296499999998474095264100469648838043212890625
        },
        "time_window": {
            "start_ts": "2026-08-24T23:38:37+00:00",
            "end_ts": "2026-08-25T00:41:36+00:00"
        },
        "searched_at": "2026-08-25T06:15:02.057324+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260825T041347_20260825T041412_004277_007DED_EF2B_COG",
        "scene_datetime": "2026-08-25T04:13:47.435068Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 26.1133209999999991168806445784866809844970703125,
            "min_lat": 40.40303800000000222780727199278771877288818359375,
            "max_lon": 29.58188799999999929468685877509415149688720703125,
            "max_lat": 42.31227100000000262980393017642199993133544921875
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1120925_thumbnail_20260825061506.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1120925_thumbnail_20260825061506.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 23:17 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 29m
  • Data Points: 47 AIS positions
  • Period: 2026-08-24T23:41:38+00:00 to 2026-08-25T06:11:34+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 389.8999999999999772626324556767940521240234375,
    "points_in_zone": 47,
    "first_point": {
        "ts": "2026-08-24T23:41:38+00:00",
        "lat": 40.94826830000000228437784244306385517120361328125,
        "lon": 28.743005000000000137561073643155395984649658203125
    },
    "last_point": {
        "ts": "2026-08-25T06:11:34+00:00",
        "lat": 40.947890000000001009539118967950344085693359375,
        "lon": 28.741588300000000089085006038658320903778076171875
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 23:17 UTC 75.0%
  • Duration: 6h 29m
  • Radius: 91 meters
  • Data Points: 47 AIS positions
  • Centroid: 40.9480, 28.7424
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 90.5,
    "duration_minutes": 389.8999999999999772626324556767940521240234375,
    "points": 47,
    "centroid": {
        "lat": 40.9480134106382820391445420682430267333984375,
        "lon": 28.74243765957447038772443193010985851287841796875
    },
    "bbox": {
        "min_lat": 40.947800000000000864019966684281826019287109375,
        "min_lon": 28.741371699999998412522472790442407131195068359375,
        "max_lat": 40.9483350000000001500666257925331592559814453125,
        "max_lon": 28.74325329999999922847564448602497577667236328125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 21:50 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 35m
  • Data Points: 38 AIS positions
  • Period: 2026-08-24T21:50:38+00:00 to 2026-08-25T04:26:33+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 395.8999999999999772626324556767940521240234375,
    "points_in_zone": 38,
    "first_point": {
        "ts": "2026-08-24T21:50:38+00:00",
        "lat": 40.94885330000000323025233228690922260284423828125,
        "lon": 28.74049000000000120280674309469759464263916015625
    },
    "last_point": {
        "ts": "2026-08-25T04:26:33+00:00",
        "lat": 40.9478016999999994141035131178796291351318359375,
        "lon": 28.74289830000000023346728994511067867279052734375
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 21:50 UTC 75.0%
  • Duration: 6h 35m
  • Radius: 184 meters
  • Data Points: 38 AIS positions
  • Centroid: 40.9481, 28.7424
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 183.69999999999998863131622783839702606201171875,
    "duration_minutes": 395.8999999999999772626324556767940521240234375,
    "points": 38,
    "centroid": {
        "lat": 40.94805903947366942929875222034752368927001953125,
        "lon": 28.742403644736842949214405962266027927398681640625
    },
    "bbox": {
        "min_lat": 40.9478016999999994141035131178796291351318359375,
        "min_lon": 28.74049000000000120280674309469759464263916015625,
        "max_lat": 40.94885330000000323025233228690922260284423828125,
        "max_lon": 28.74312330000000059726517065428197383880615234375
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 20:11 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 33m
  • Data Points: 33 AIS positions
  • Period: 2026-08-24T20:44:37+00:00 to 2026-08-25T03:17:37+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 393,
    "points_in_zone": 33,
    "first_point": {
        "ts": "2026-08-24T20:44:37+00:00",
        "lat": 40.94839329999999932852006168104708194732666015625,
        "lon": 28.74075330000000150221239891834557056427001953125
    },
    "last_point": {
        "ts": "2026-08-25T03:17:37+00:00",
        "lat": 40.94816999999999751480572740547358989715576171875,
        "lon": 28.74273170000000021673258743248879909515380859375
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 20:11 UTC 75.0%
  • Duration: 6h 33m
  • Radius: 171 meters
  • Data Points: 33 AIS positions
  • Centroid: 40.9481, 28.7423
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 171.19999999999998863131622783839702606201171875,
    "duration_minutes": 393,
    "points": 33,
    "centroid": {
        "lat": 40.94809762727272328675098833627998828887939453125,
        "lon": 28.742262478787882429287492414005100727081298828125
    },
    "bbox": {
        "min_lat": 40.947851700000001073931343853473663330078125,
        "min_lon": 28.74049000000000120280674309469759464263916015625,
        "max_lat": 40.94885330000000323025233228690922260284423828125,
        "max_lon": 28.74312330000000059726517065428197383880615234375
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts Bosphorus/Dardanelles Approach
Aug 24, 2026 20:02 UTC 60/100
Vessel A: INTEGRATOR (INTEGRATOR) RUSSIA
Vessel B: IMO 9314844 (LYDIA KA) Marshall Is
  • Minimum Distance: 444 meters
  • Average Distance: 461 meters
  • Duration: 54 minutes
  • Period: 2026-08-24T20:02:23+00:00 to 2026-08-24T20:56:41+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 60/100

Moderate-confidence STS candidate. Two tankers (INTEGRATOR and LYDIA KA) maintained close proximity (min 444m, avg 461m) for 54 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 444m, avg 461m
Duration10/25Duration 54 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±12m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273275360,
        "imo": 9436941,
        "name": "INTEGRATOR",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 538011104,
        "imo": 9314844,
        "name": "LYDIA KA",
        "flag": "Marshall Is"
    },
    "min_distance_m": 444,
    "avg_distance_m": 460.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 12,
    "duration_minutes": 54.2999999999999971578290569595992565155029296875,
    "overlap_duration_s": 3258,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-24T20:02:23+00:00",
        "end": "2026-08-24T20:56:41+00:00"
    },
    "points_count": {
        "vessel_a": 11,
        "vessel_b": 11
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 60,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 444m, avg 461m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 54 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b112m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (INTEGRATOR and LYDIA KA) maintained close proximity (min 444m, avg 461m) for 54 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Aug 24, 2026 19:03 UTC 55/100
Vessel A: INTEGRATOR (INTEGRATOR) RUSSIA
Vessel B: IMO 9314844 (LYDIA KA) Marshall Is
  • Minimum Distance: 430 meters
  • Average Distance: 448 meters
  • Duration: 33 minutes
  • Period: 2026-08-24T19:03:22+00:00 to 2026-08-24T19:36:42+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 55/100

Low-confidence STS candidate - may warrant review. Two tankers (INTEGRATOR and LYDIA KA) maintained close proximity (min 430m, avg 448m) for 33 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 430m, avg 448m
Duration5/25Duration 33 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±18m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-08-25T01:00:08.100735+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273275360,
        "imo": 9436941,
        "name": "INTEGRATOR",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 538011104,
        "imo": 9314844,
        "name": "LYDIA KA",
        "flag": "Marshall Is"
    },
    "min_distance_m": 429.6000000000000227373675443232059478759765625,
    "avg_distance_m": 447.5,
    "distance_consistency_m": 18,
    "duration_minutes": 33.2999999999999971578290569595992565155029296875,
    "overlap_duration_s": 2000,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-24T19:03:22+00:00",
        "end": "2026-08-24T19:36:42+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 55,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 430m, avg 448m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 33 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: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Low-confidence STS candidate - may warrant review. Two tankers (INTEGRATOR and LYDIA KA) maintained close proximity (min 430m, avg 448m) for 33 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.946292499999998426574165932834148406982421875,
            "lon": 28.740528199999999969804775901138782501220703125
        },
        "time_window": {
            "start_ts": "2026-08-24T19:03:22+00:00",
            "end_ts": "2026-08-24T19:36:42+00:00"
        },
        "searched_at": "2026-08-25T01:00:08.100735+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 19:02 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 36m
  • Data Points: 27 AIS positions
  • Period: 2026-08-24T19:41:35+00:00 to 2026-08-25T02:17:37+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 396,
    "points_in_zone": 27,
    "first_point": {
        "ts": "2026-08-24T19:41:35+00:00",
        "lat": 40.94823170000000089885361376218497753143310546875,
        "lon": 28.740821700000001470698407501913607120513916015625
    },
    "last_point": {
        "ts": "2026-08-25T02:17:37+00:00",
        "lat": 40.94805170000000060781530919484794139862060546875,
        "lon": 28.742270000000001317630449193529784679412841796875
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 19:02 UTC 75.0%
  • Duration: 6h 36m
  • Radius: 151 meters
  • Data Points: 27 AIS positions
  • Centroid: 40.9481, 28.7420
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 150.69999999999998863131622783839702606201171875,
    "duration_minutes": 396,
    "points": 27,
    "centroid": {
        "lat": 40.948130929629627416943549178540706634521484375,
        "lon": 28.74200444814814403571290313266217708587646484375
    },
    "bbox": {
        "min_lat": 40.947851700000001073931343853473663330078125,
        "min_lon": 28.74049000000000120280674309469759464263916015625,
        "max_lat": 40.94885330000000323025233228690922260284423828125,
        "max_lon": 28.74312330000000059726517065428197383880615234375
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Aug 24, 2026 18:56 UTC 55/100
Vessel A: INTEGRATOR (INTEGRATOR) RUSSIA
Vessel B: IMO 9314844 (LYDIA KA) Marshall Is
  • Minimum Distance: 430 meters
  • Average Distance: 456 meters
  • Duration: 40 minutes
  • Period: 2026-08-24T18:56:02+00:00 to 2026-08-24T19:36:42+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 55/100

Low-confidence STS candidate - may warrant review. Two tankers (INTEGRATOR and LYDIA KA) maintained close proximity (min 430m, avg 456m) for 41 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 430m, avg 456m
Duration5/25Duration 41 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±21m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-08-24T20:15:01.839299+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273275360,
        "imo": 9436941,
        "name": "INTEGRATOR",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 538011104,
        "imo": 9314844,
        "name": "LYDIA KA",
        "flag": "Marshall Is"
    },
    "min_distance_m": 429.6000000000000227373675443232059478759765625,
    "avg_distance_m": 455.5,
    "distance_consistency_m": 21.300000000000000710542735760100185871124267578125,
    "duration_minutes": 40.7000000000000028421709430404007434844970703125,
    "overlap_duration_s": 2440,
    "speed_a_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-24T18:56:02+00:00",
        "end": "2026-08-24T19:36:42+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 55,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 430m, avg 456m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 41 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b121m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Low-confidence STS candidate - may warrant review. Two tankers (INTEGRATOR and LYDIA KA) maintained close proximity (min 430m, avg 456m) for 41 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.94628970000000123263816931284964084625244140625,
            "lon": 28.74051010000000161426214617677032947540283203125
        },
        "time_window": {
            "start_ts": "2026-08-24T18:56:02+00:00",
            "end_ts": "2026-08-24T19:36:42+00:00"
        },
        "searched_at": "2026-08-24T20:15:01.839299+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Aug 24, 2026 17:53 UTC 75/100
Vessel A: IMO 9314844 (LYDIA KA) Marshall Is
Vessel B: INTEGRATOR (INTEGRATOR) RUSSIA
  • Minimum Distance: 430 meters
  • Average Distance: 463 meters
  • Duration: 2h 54m
  • Period: 2026-08-24T17:53:33+00:00 to 2026-08-24T20:47:36+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (LYDIA KA and INTEGRATOR) maintained close proximity (min 430m, avg 463m) for 174 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 430m, avg 463m
Duration25/25Duration 174 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±20m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-08-24T21:30:02.040743+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538011104,
        "imo": 9314844,
        "name": "LYDIA KA",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 273275360,
        "imo": 9436941,
        "name": "INTEGRATOR",
        "flag": "RUSSIA"
    },
    "min_distance_m": 429.6000000000000227373675443232059478759765625,
    "avg_distance_m": 463.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 20,
    "duration_minutes": 174.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 10443,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-08-24T17:53:33+00:00",
        "end": "2026-08-24T20:47:36+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 430m, avg 463m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 174 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very 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: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (LYDIA KA and INTEGRATOR) maintained close proximity (min 430m, avg 463m) for 174 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.94618109999999688852767576463520526885986328125,
            "lon": 28.74063960000000150785126606933772563934326171875
        },
        "time_window": {
            "start_ts": "2026-08-24T17:53:33+00:00",
            "end_ts": "2026-08-24T20:47:36+00:00"
        },
        "searched_at": "2026-08-24T21:30:02.040743+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 17:23 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 36m
  • Data Points: 20 AIS positions
  • Period: 2026-08-24T17:53:33+00:00 to 2026-08-25T00:29:37+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 396.1000000000000227373675443232059478759765625,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-08-24T17:53:33+00:00",
        "lat": 40.94809500000000213049133890308439731597900390625,
        "lon": 28.74089670000000040772647480480372905731201171875
    },
    "last_point": {
        "ts": "2026-08-25T00:29:37+00:00",
        "lat": 40.9480999999999966121322358958423137664794921875,
        "lon": 28.742753300000000393765731132589280605316162109375
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 17:23 UTC 75.0%
  • Duration: 6h 36m
  • Radius: 133 meters
  • Data Points: 20 AIS positions
  • Centroid: 40.9482, 28.7418
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 132.80000000000001136868377216160297393798828125,
    "duration_minutes": 396.1000000000000227373675443232059478759765625,
    "points": 20,
    "centroid": {
        "lat": 40.9482406650000001491207513026893138885498046875,
        "lon": 28.7418439150000040172017179429531097412109375
    },
    "bbox": {
        "min_lat": 40.9479917000000028792783268727362155914306640625,
        "min_lon": 28.74049000000000120280674309469759464263916015625,
        "max_lat": 40.94885330000000323025233228690922260284423828125,
        "max_lon": 28.74312330000000059726517065428197383880615234375
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 16:44 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 33m
  • Data Points: 13 AIS positions
  • Period: 2026-08-24T16:44:34+00:00 to 2026-08-24T23:17:36+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 393,
    "points_in_zone": 13,
    "first_point": {
        "ts": "2026-08-24T16:44:34+00:00",
        "lat": 40.94862330000000127938619698397815227508544921875,
        "lon": 28.740378299999999711644704802893102169036865234375
    },
    "last_point": {
        "ts": "2026-08-24T23:17:36+00:00",
        "lat": 40.94799830000000184782038559205830097198486328125,
        "lon": 28.742650000000001142552719102241098880767822265625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 16:44 UTC 75.0%
  • Duration: 6h 33m
  • Radius: 155 meters
  • Data Points: 13 AIS positions
  • Centroid: 40.9483, 28.7409
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 155.400000000000005684341886080801486968994140625,
    "duration_minutes": 393,
    "points": 13,
    "centroid": {
        "lat": 40.9483201230769253697872045449912548065185546875,
        "lon": 28.7408543538461600519440253265202045440673828125
    },
    "bbox": {
        "min_lat": 40.94799830000000184782038559205830097198486328125,
        "min_lon": 28.740378299999999711644704802893102169036865234375,
        "max_lat": 40.94885330000000323025233228690922260284423828125,
        "max_lon": 28.742650000000001142552719102241098880767822265625
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Aug 24, 2026 15:53 UTC 60/100
Vessel A: IMO 9314844 (LYDIA KA) Marshall Is
Vessel B: INTEGRATOR (INTEGRATOR) RUSSIA
  • Minimum Distance: 483 meters
  • Average Distance: 489 meters
  • Duration: 51 minutes
  • Period: 2026-08-24T15:53:35+00:00 to 2026-08-24T16:44:34+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 60/100

Moderate-confidence STS candidate. Two tankers (LYDIA KA and INTEGRATOR) maintained close proximity (min 483m, avg 489m) for 51 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 483m, avg 489m
Duration10/25Duration 51 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±6m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-08-24T17:15:12.483859+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538011104,
        "imo": 9314844,
        "name": "LYDIA KA",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 273275360,
        "imo": 9436941,
        "name": "INTEGRATOR",
        "flag": "RUSSIA"
    },
    "min_distance_m": 483.19999999999998863131622783839702606201171875,
    "avg_distance_m": 489.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 5.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 51,
    "overlap_duration_s": 3059,
    "speed_a_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_a_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_b_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-08-24T15:53:35+00:00",
        "end": "2026-08-24T16:44:34+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 60,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 483m, avg 489m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 51 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b16m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (LYDIA KA and INTEGRATOR) maintained close proximity (min 483m, avg 489m) for 51 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.94636469999999661695255781523883342742919921875,
            "lon": 28.74039309999999858291630516760051250457763671875
        },
        "time_window": {
            "start_ts": "2026-08-24T15:53:35+00:00",
            "end_ts": "2026-08-24T16:44:34+00:00"
        },
        "searched_at": "2026-08-24T17:15:12.483859+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 15:14 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 9m
  • Data Points: 16 AIS positions
  • Period: 2026-08-24T15:41:33+00:00 to 2026-08-24T21:50:38+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 369.1000000000000227373675443232059478759765625,
    "points_in_zone": 16,
    "first_point": {
        "ts": "2026-08-24T15:41:33+00:00",
        "lat": 40.94856999999999658257365808822214603424072265625,
        "lon": 28.74039330000000092013578978367149829864501953125
    },
    "last_point": {
        "ts": "2026-08-24T21:50:38+00:00",
        "lat": 40.94885330000000323025233228690922260284423828125,
        "lon": 28.74049000000000120280674309469759464263916015625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 15:14 UTC 75.0%
  • Duration: 6h 9m
  • Radius: 51 meters
  • Data Points: 16 AIS positions
  • Centroid: 40.9484, 28.7406
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 51,
    "duration_minutes": 369.1000000000000227373675443232059478759765625,
    "points": 16,
    "centroid": {
        "lat": 40.94840624375000714962880010716617107391357421875,
        "lon": 28.740626868750009492714525549672544002532958984375
    },
    "bbox": {
        "min_lat": 40.94807999999999736928657512180507183074951171875,
        "min_lon": 28.740375000000000227373675443232059478759765625,
        "max_lat": 40.94885330000000323025233228690922260284423828125,
        "max_lon": 28.740911700000001616217559785582125186920166015625
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 14:08 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 18m
  • Data Points: 19 AIS positions
  • Period: 2026-08-24T14:29:32+00:00 to 2026-08-24T20:47:36+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 378.1000000000000227373675443232059478759765625,
    "points_in_zone": 19,
    "first_point": {
        "ts": "2026-08-24T14:29:32+00:00",
        "lat": 40.94895999999999958163243718445301055908203125,
        "lon": 28.74017669999999924357325653545558452606201171875
    },
    "last_point": {
        "ts": "2026-08-24T20:47:36+00:00",
        "lat": 40.94836500000000256704879575408995151519775390625,
        "lon": 28.740718300000001050875653163529932498931884765625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 14:08 UTC 75.0%
  • Duration: 6h 18m
  • Radius: 66 meters
  • Data Points: 19 AIS positions
  • Centroid: 40.9484, 28.7406
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 66.2000000000000028421709430404007434844970703125,
    "duration_minutes": 378.1000000000000227373675443232059478759765625,
    "points": 19,
    "centroid": {
        "lat": 40.9484470999999956575265969149768352508544921875,
        "lon": 28.740576310526318337679185788147151470184326171875
    },
    "bbox": {
        "min_lat": 40.94807999999999736928657512180507183074951171875,
        "min_lon": 28.74017669999999924357325653545558452606201171875,
        "max_lat": 40.94895999999999958163243718445301055908203125,
        "max_lon": 28.740911700000001616217559785582125186920166015625
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 13:44 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 27m
  • Data Points: 18 AIS positions
  • Period: 2026-08-24T13:44:35+00:00 to 2026-08-24T20:11:36+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 387,
    "points_in_zone": 18,
    "first_point": {
        "ts": "2026-08-24T13:44:35+00:00",
        "lat": 40.9486050000000005866240826435387134552001953125,
        "lon": 28.740330000000000154614099301397800445556640625
    },
    "last_point": {
        "ts": "2026-08-24T20:11:36+00:00",
        "lat": 40.94807999999999736928657512180507183074951171875,
        "lon": 28.740911700000001616217559785582125186920166015625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 13:44 UTC 75.0%
  • Duration: 6h 27m
  • Radius: 62 meters
  • Data Points: 18 AIS positions
  • Centroid: 40.9485, 28.7405
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 62.2999999999999971578290569595992565155029296875,
    "duration_minutes": 387,
    "points": 18,
    "centroid": {
        "lat": 40.94846804999999534402377321384847164154052734375,
        "lon": 28.7405320388888867455534636974334716796875
    },
    "bbox": {
        "min_lat": 40.94807999999999736928657512180507183074951171875,
        "min_lon": 28.74017669999999924357325653545558452606201171875,
        "max_lat": 40.94895999999999958163243718445301055908203125,
        "max_lon": 28.740911700000001616217559785582125186920166015625
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Aug 24, 2026 12:14 UTC 55/100
Vessel A: IMO 9314844 (LYDIA KA) Marshall Is
Vessel B: INTEGRATOR (INTEGRATOR) RUSSIA
  • Minimum Distance: 479 meters
  • Average Distance: 489 meters
  • Duration: 33 minutes
  • Period: 2026-08-24T12:14:33+00:00 to 2026-08-24T12:47:35+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 55/100

Low-confidence STS candidate - may warrant review. Two tankers (LYDIA KA and INTEGRATOR) maintained close proximity (min 479m, avg 488m) for 33 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 479m, avg 488m
Duration5/25Duration 33 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±13m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-08-24T18:45:09.472149+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538011104,
        "imo": 9314844,
        "name": "LYDIA KA",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 273275360,
        "imo": 9436941,
        "name": "INTEGRATOR",
        "flag": "RUSSIA"
    },
    "min_distance_m": 479.19999999999998863131622783839702606201171875,
    "avg_distance_m": 488.5,
    "distance_consistency_m": 13.199999999999999289457264239899814128875732421875,
    "duration_minutes": 33,
    "overlap_duration_s": 1982,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_b_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-08-24T12:14:33+00:00",
        "end": "2026-08-24T12:47:35+00:00"
    },
    "points_count": {
        "vessel_a": 2,
        "vessel_b": 2
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 55,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 479m, avg 488m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 33 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b113m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Low-confidence STS candidate - may warrant review. Two tankers (LYDIA KA and INTEGRATOR) maintained close proximity (min 479m, avg 488m) for 33 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.94624540000000223471943172626197338104248046875,
            "lon": 28.740403300000000541558620170690119266510009765625
        },
        "time_window": {
            "start_ts": "2026-08-24T12:14:33+00:00",
            "end_ts": "2026-08-24T12:47:35+00:00"
        },
        "searched_at": "2026-08-24T18:45:09.472149+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 12:02 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 30m
  • Data Points: 17 AIS positions
  • Period: 2026-08-24T12:47:35+00:00 to 2026-08-24T19:17:37+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 390,
    "points_in_zone": 17,
    "first_point": {
        "ts": "2026-08-24T12:47:35+00:00",
        "lat": 40.948458299999998644125298596918582916259765625,
        "lon": 28.740339999999999776036929688416421413421630859375
    },
    "last_point": {
        "ts": "2026-08-24T19:17:37+00:00",
        "lat": 40.9482382999999998673956724815070629119873046875,
        "lon": 28.740725000000001188027454190887510776519775390625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 12:02 UTC 75.0%
  • Duration: 6h 30m
  • Radius: 57 meters
  • Data Points: 17 AIS positions
  • Centroid: 40.9485, 28.7405
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 57.2999999999999971578290569595992565155029296875,
    "duration_minutes": 390,
    "points": 17,
    "centroid": {
        "lat": 40.9485042058823438537729089148342609405517578125,
        "lon": 28.740481370588231158080816385336220264434814453125
    },
    "bbox": {
        "min_lat": 40.94809500000000213049133890308439731597900390625,
        "min_lon": 28.74017669999999924357325653545558452606201171875,
        "max_lat": 40.94895999999999958163243718445301055908203125,
        "max_lon": 28.740899999999999891997504164464771747589111328125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Aug 24, 2026 11:56 UTC 60/100
Vessel A: IMO 9314844 (LYDIA KA) Marshall Is
Vessel B: INTEGRATOR (INTEGRATOR) RUSSIA
  • Minimum Distance: 467 meters
  • Average Distance: 479 meters
  • Duration: 51 minutes
  • Period: 2026-08-24T11:56:29+00:00 to 2026-08-24T12:47:35+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 60/100

Moderate-confidence STS candidate. Two tankers (LYDIA KA and INTEGRATOR) maintained close proximity (min 467m, avg 479m) for 51 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 467m, avg 479m
Duration10/25Duration 51 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±14m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-08-24T15:15:02.041178+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538011104,
        "imo": 9314844,
        "name": "LYDIA KA",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 273275360,
        "imo": 9436941,
        "name": "INTEGRATOR",
        "flag": "RUSSIA"
    },
    "min_distance_m": 466.8999999999999772626324556767940521240234375,
    "avg_distance_m": 478.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 13.699999999999999289457264239899814128875732421875,
    "duration_minutes": 51.10000000000000142108547152020037174224853515625,
    "overlap_duration_s": 3066,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-08-24T11:56:29+00:00",
        "end": "2026-08-24T12:47:35+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 60,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 467m, avg 479m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 51 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b114m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (LYDIA KA and INTEGRATOR) maintained close proximity (min 467m, avg 479m) for 51 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.94634169999999784295141580514609813690185546875,
            "lon": 28.7403544000000010782969184219837188720703125
        },
        "time_window": {
            "start_ts": "2026-08-24T11:56:29+00:00",
            "end_ts": "2026-08-24T12:47:35+00:00"
        },
        "searched_at": "2026-08-24T15:15:02.041178+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 11:14 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 18m
  • Data Points: 20 AIS positions
  • Period: 2026-08-24T11:38:32+00:00 to 2026-08-24T17:56:31+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 378,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-08-24T11:38:32+00:00",
        "lat": 40.94904170000000220852598431520164012908935546875,
        "lon": 28.74022670000000090340108727104961872100830078125
    },
    "last_point": {
        "ts": "2026-08-24T17:56:31+00:00",
        "lat": 40.94813669999999916626620688475668430328369140625,
        "lon": 28.740899999999999891997504164464771747589111328125
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 11:14 UTC 75.0%
  • Duration: 6h 18m
  • Radius: 67 meters
  • Data Points: 20 AIS positions
  • Centroid: 40.9486, 28.7404
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 66.5,
    "duration_minutes": 378,
    "points": 20,
    "centroid": {
        "lat": 40.94857458499999580681105726398527622222900390625,
        "lon": 28.740424499999999596866473439149558544158935546875
    },
    "bbox": {
        "min_lat": 40.94809500000000213049133890308439731597900390625,
        "min_lon": 28.740165000000001072066879714839160442352294921875,
        "max_lat": 40.94904170000000220852598431520164012908935546875,
        "max_lon": 28.740899999999999891997504164464771747589111328125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Aug 24, 2026 10:32 UTC 68/100
Vessel A: IMO 9314844 (LYDIA KA) Marshall Is
Vessel B: INTEGRATOR (INTEGRATOR) RUSSIA
  • Minimum Distance: 292 meters
  • Average Distance: 374 meters
  • Duration: 1h 6m
  • Period: 2026-08-24T10:32:28+00:00 to 2026-08-24T11:38:32+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 68/100

Moderate-confidence STS candidate. Two tankers (LYDIA KA and INTEGRATOR) maintained close proximity (min 292m, avg 374m) for 66 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 292m, avg 374m
Duration15/25Duration 66 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±96m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-08-24T16:45:12.175728+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538011104,
        "imo": 9314844,
        "name": "LYDIA KA",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 273275360,
        "imo": 9436941,
        "name": "INTEGRATOR",
        "flag": "RUSSIA"
    },
    "min_distance_m": 292.30000000000001136868377216160297393798828125,
    "avg_distance_m": 373.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 95.5,
    "duration_minutes": 66.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 3964,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_avg": 0.11999999999999999555910790149937383830547332763671875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.11999999999999999555910790149937383830547332763671875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-08-24T10:32:28+00:00",
        "end": "2026-08-24T11:38:32+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 68,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 292m, avg 374m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 66 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b196m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (LYDIA KA and INTEGRATOR) maintained close proximity (min 292m, avg 374m) for 66 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.94692479999999790152287459932267665863037109375,
            "lon": 28.74049649999999900273905950598418712615966796875
        },
        "time_window": {
            "start_ts": "2026-08-24T10:32:28+00:00",
            "end_ts": "2026-08-24T11:38:32+00:00"
        },
        "searched_at": "2026-08-24T16:45:12.175728+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 10:08 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 12m
  • Data Points: 20 AIS positions
  • Period: 2026-08-24T10:32:28+00:00 to 2026-08-24T16:44:34+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 372.1000000000000227373675443232059478759765625,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-08-24T10:32:28+00:00",
        "lat": 40.94826669999999779747668071649968624114990234375,
        "lon": 28.74074829999999991514414432458579540252685546875
    },
    "last_point": {
        "ts": "2026-08-24T16:44:34+00:00",
        "lat": 40.94862330000000127938619698397815227508544921875,
        "lon": 28.740378299999999711644704802893102169036865234375
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 10:08 UTC 75.0%
  • Duration: 6h 12m
  • Radius: 49 meters
  • Data Points: 20 AIS positions
  • Centroid: 40.9486, 28.7404
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 49.39999999999999857891452847979962825775146484375,
    "duration_minutes": 372.1000000000000227373675443232059478759765625,
    "points": 20,
    "centroid": {
        "lat": 40.94861716499999459983882843516767024993896484375,
        "lon": 28.740386329999989101224855403415858745574951171875
    },
    "bbox": {
        "min_lat": 40.94826669999999779747668071649968624114990234375,
        "min_lon": 28.740165000000001072066879714839160442352294921875,
        "max_lat": 40.94904170000000220852598431520164012908935546875,
        "max_lon": 28.74074829999999991514414432458579540252685546875
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 09:08 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 30m
  • Data Points: 21 AIS positions
  • Period: 2026-08-24T09:29:34+00:00 to 2026-08-24T15:59:34+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 390,
    "points_in_zone": 21,
    "first_point": {
        "ts": "2026-08-24T09:29:34+00:00",
        "lat": 40.948503299999998716884874738752841949462890625,
        "lon": 28.74074170000000094660208560526371002197265625
    },
    "last_point": {
        "ts": "2026-08-24T15:59:34+00:00",
        "lat": 40.9485432999999972025761962868273258209228515625,
        "lon": 28.74038170000000036452547647058963775634765625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 09:08 UTC 75.0%
  • Duration: 6h 30m
  • Radius: 51 meters
  • Data Points: 21 AIS positions
  • Centroid: 40.9486, 28.7404
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 50.60000000000000142108547152020037174224853515625,
    "duration_minutes": 390,
    "points": 21,
    "centroid": {
        "lat": 40.948610076190476547708385623991489410400390625,
        "lon": 28.740414442857140642217927961610257625579833984375
    },
    "bbox": {
        "min_lat": 40.94826669999999779747668071649968624114990234375,
        "min_lon": 28.740165000000001072066879714839160442352294921875,
        "max_lat": 40.94904170000000220852598431520164012908935546875,
        "max_lon": 28.74074829999999991514414432458579540252685546875
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Aug 24, 2026 09:02 UTC 65/100
Vessel A: INTEGRATOR (INTEGRATOR) RUSSIA
Vessel B: IMO 9314844 (LYDIA KA) Marshall Is
  • Minimum Distance: 258 meters
  • Average Distance: 275 meters
  • Duration: 34 minutes
  • Period: 2026-08-24T09:02:52+00:00 to 2026-08-24T09:37:12+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (INTEGRATOR and LYDIA KA) maintained close proximity (min 258m, avg 275m) for 34 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 258m, avg 275m
Duration5/25Duration 34 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±10m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-08-24T15:30:01.371839+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273275360,
        "imo": 9436941,
        "name": "INTEGRATOR",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 538011104,
        "imo": 9314844,
        "name": "LYDIA KA",
        "flag": "Marshall Is"
    },
    "min_distance_m": 258.1000000000000227373675443232059478759765625,
    "avg_distance_m": 275.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 10.5,
    "duration_minutes": 34.2999999999999971578290569595992565155029296875,
    "overlap_duration_s": 2060,
    "speed_a_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-08-24T09:02:52+00:00",
        "end": "2026-08-24T09:37:12+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 258m, avg 275m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 34 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b110m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (INTEGRATOR and LYDIA KA) maintained close proximity (min 258m, avg 275m) for 34 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.9473770000000030222508939914405345916748046875,
            "lon": 28.7408123000000017555066733621060848236083984375
        },
        "time_window": {
            "start_ts": "2026-08-24T09:02:52+00:00",
            "end_ts": "2026-08-24T09:37:12+00:00"
        },
        "searched_at": "2026-08-24T15:30:01.371839+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Bosphorus/Dardanelles Approach
Aug 24, 2026 08:05 UTC 78/100
Vessel A: IMO 9314844 (LYDIA KA) Marshall Is
Vessel B: INTEGRATOR (INTEGRATOR) RUSSIA
  • Minimum Distance: 265 meters
  • Average Distance: 350 meters
  • Duration: 3h 33m
  • Period: 2026-08-24T08:05:29+00:00 to 2026-08-24T11:38:32+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 78/100

Moderate-confidence STS candidate. Two tankers (LYDIA KA and INTEGRATOR) maintained close proximity (min 265m, avg 350m) for 213 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 265m, avg 350m
Duration25/25Duration 213 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±64m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538011104,
        "imo": 9314844,
        "name": "LYDIA KA",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 273275360,
        "imo": 9436941,
        "name": "INTEGRATOR",
        "flag": "RUSSIA"
    },
    "min_distance_m": 264.80000000000001136868377216160297393798828125,
    "avg_distance_m": 349.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 64.099999999999994315658113919198513031005859375,
    "duration_minutes": 213.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 12783,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.14000000000000001332267629550187848508358001708984375,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.14000000000000001332267629550187848508358001708984375,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        }
    },
    "time_window": {
        "start": "2026-08-24T08:05:29+00:00",
        "end": "2026-08-24T11:38:32+00:00"
    },
    "points_count": {
        "vessel_a": 14,
        "vessel_b": 14
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 78,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 265m, avg 350m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 213 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b164m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (LYDIA KA and INTEGRATOR) maintained close proximity (min 265m, avg 350m) for 213 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 08:05 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 18m
  • Data Points: 19 AIS positions
  • Period: 2026-08-24T08:56:28+00:00 to 2026-08-24T15:14:32+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 378.1000000000000227373675443232059478759765625,
    "points_in_zone": 19,
    "first_point": {
        "ts": "2026-08-24T08:56:28+00:00",
        "lat": 40.94902830000000193422238226048648357391357421875,
        "lon": 28.74065829999999976962499204091727733612060546875
    },
    "last_point": {
        "ts": "2026-08-24T15:14:32+00:00",
        "lat": 40.94853330000000113386704470030963420867919921875,
        "lon": 28.740423299999999784404280944727361202239990234375
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 08:05 UTC 75.0%
  • Duration: 6h 18m
  • Radius: 50 meters
  • Data Points: 19 AIS positions
  • Centroid: 40.9486, 28.7404
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 49.7000000000000028421709430404007434844970703125,
    "duration_minutes": 378.1000000000000227373675443232059478759765625,
    "points": 19,
    "centroid": {
        "lat": 40.9486438578947371524918708018958568572998046875,
        "lon": 28.740431578947369217758023296482861042022705078125
    },
    "bbox": {
        "min_lat": 40.94826669999999779747668071649968624114990234375,
        "min_lon": 28.740165000000001072066879714839160442352294921875,
        "max_lat": 40.94904170000000220852598431520164012908935546875,
        "max_lon": 28.74074829999999991514414432458579540252685546875
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts Bosphorus/Dardanelles Approach
Aug 24, 2026 07:58 UTC 57/100
Vessel A: INTEGRATOR (INTEGRATOR) RUSSIA
Vessel B: IMO 9314844 (LYDIA KA) Marshall Is
  • Minimum Distance: 336 meters
  • Average Distance: 380 meters
  • Duration: 44 minutes
  • Period: 2026-08-24T07:58:03+00:00 to 2026-08-24T08:42:52+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 57/100

Low-confidence STS candidate - may warrant review. Two tankers (INTEGRATOR and LYDIA KA) maintained close proximity (min 336m, avg 380m) for 45 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 336m, avg 380m
Duration5/25Duration 45 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency12/15Distance variance ±36m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273275360,
        "imo": 9436941,
        "name": "INTEGRATOR",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 538011104,
        "imo": 9314844,
        "name": "LYDIA KA",
        "flag": "Marshall Is"
    },
    "min_distance_m": 336,
    "avg_distance_m": 379.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 36.39999999999999857891452847979962825775146484375,
    "duration_minutes": 44.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 2689,
    "speed_a_avg": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_a_std": 0.14000000000000001332267629550187848508358001708984375,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1700000000000000122124532708767219446599483489990234375,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-08-24T07:58:03+00:00",
        "end": "2026-08-24T08:42:52+00:00"
    },
    "points_count": {
        "vessel_a": 11,
        "vessel_b": 11
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 57,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 336m, avg 380m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 45 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b136m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Low-confidence STS candidate - may warrant review. Two tankers (INTEGRATOR and LYDIA KA) maintained close proximity (min 336m, avg 380m) for 45 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 06:02 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 33m
  • Data Points: 21 AIS positions
  • Period: 2026-08-24T06:14:34+00:00 to 2026-08-24T12:47:35+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 393,
    "points_in_zone": 21,
    "first_point": {
        "ts": "2026-08-24T06:14:34+00:00",
        "lat": 40.94920330000000063819243223406374454498291015625,
        "lon": 28.740088300000000032241587177850306034088134765625
    },
    "last_point": {
        "ts": "2026-08-24T12:47:35+00:00",
        "lat": 40.948458299999998644125298596918582916259765625,
        "lon": 28.740339999999999776036929688416421413421630859375
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 06:02 UTC 75.0%
  • Duration: 6h 33m
  • Radius: 94 meters
  • Data Points: 21 AIS positions
  • Centroid: 40.9490, 28.7405
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 93.7000000000000028421709430404007434844970703125,
    "duration_minutes": 393,
    "points": 21,
    "centroid": {
        "lat": 40.94903325238094993210324901156127452850341796875,
        "lon": 28.740465709523807191771993529982864856719970703125
    },
    "bbox": {
        "min_lat": 40.94826669999999779747668071649968624114990234375,
        "min_lon": 28.740069999999999339479472837410867214202880859375,
        "max_lat": 40.9498650000000026238922146148979663848876953125,
        "max_lon": 28.74074829999999991514414432458579540252685546875
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 05:23 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 33m
  • Data Points: 26 AIS positions
  • Period: 2026-08-24T05:41:35+00:00 to 2026-08-24T12:14:33+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 393,
    "points_in_zone": 26,
    "first_point": {
        "ts": "2026-08-24T05:41:35+00:00",
        "lat": 40.94913999999999987267074175179004669189453125,
        "lon": 28.740158300000000934915078687481582164764404296875
    },
    "last_point": {
        "ts": "2026-08-24T12:14:33+00:00",
        "lat": 40.9484317000000004327375791035592555999755859375,
        "lon": 28.7404532999999986486727721057832241058349609375
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 05:23 UTC 75.0%
  • Duration: 6h 33m
  • Radius: 95 meters
  • Data Points: 26 AIS positions
  • Centroid: 40.9491, 28.7404
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 95.2999999999999971578290569595992565155029296875,
    "duration_minutes": 393,
    "points": 26,
    "centroid": {
        "lat": 40.94908128461536733766479301266372203826904296875,
        "lon": 28.740392746153847980394857586361467838287353515625
    },
    "bbox": {
        "min_lat": 40.94826669999999779747668071649968624114990234375,
        "min_lon": 28.740068300000000789395926403813064098358154296875,
        "max_lat": 40.9498650000000026238922146148979663848876953125,
        "max_lon": 28.74074829999999991514414432458579540252685546875
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 04:08 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 23m
  • Data Points: 24 AIS positions
  • Period: 2026-08-24T04:50:33+00:00 to 2026-08-24T11:14:30+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 383.8999999999999772626324556767940521240234375,
    "points_in_zone": 24,
    "first_point": {
        "ts": "2026-08-24T04:50:33+00:00",
        "lat": 40.949088299999999662759364582598209381103515625,
        "lon": 28.7401899999999983492671162821352481842041015625
    },
    "last_point": {
        "ts": "2026-08-24T11:14:30+00:00",
        "lat": 40.948790000000002464730641804635524749755859375,
        "lon": 28.740236700000000524823917658068239688873291015625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 04:08 UTC 75.0%
  • Duration: 6h 23m
  • Radius: 104 meters
  • Data Points: 24 AIS positions
  • Centroid: 40.9492, 28.7404
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 103.900000000000005684341886080801486968994140625,
    "duration_minutes": 383.8999999999999772626324556767940521240234375,
    "points": 24,
    "centroid": {
        "lat": 40.9491580500000083020495367236435413360595703125,
        "lon": 28.74037394999999150968506000936031341552734375
    },
    "bbox": {
        "min_lat": 40.94826669999999779747668071649968624114990234375,
        "min_lon": 28.740068300000000789395926403813064098358154296875,
        "max_lat": 40.9498650000000026238922146148979663848876953125,
        "max_lon": 28.74074829999999991514414432458579540252685546875
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 03:05 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 35m
  • Data Points: 29 AIS positions
  • Period: 2026-08-24T03:32:36+00:00 to 2026-08-24T10:08:32+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 395.8999999999999772626324556767940521240234375,
    "points_in_zone": 29,
    "first_point": {
        "ts": "2026-08-24T03:32:36+00:00",
        "lat": 40.94876000000000004774847184307873249053955078125,
        "lon": 28.74034329999999926030795904807746410369873046875
    },
    "last_point": {
        "ts": "2026-08-24T10:08:32+00:00",
        "lat": 40.9485882999999972753357724286615848541259765625,
        "lon": 28.74061329999999969686541589908301830291748046875
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 03:05 UTC 75.0%
  • Duration: 6h 35m
  • Radius: 85 meters
  • Data Points: 29 AIS positions
  • Centroid: 40.9491, 28.7403
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 85.2000000000000028421709430404007434844970703125,
    "duration_minutes": 395.8999999999999772626324556767940521240234375,
    "points": 29,
    "centroid": {
        "lat": 40.949134648275872905287542380392551422119140625,
        "lon": 28.740341831034474040507120662368834018707275390625
    },
    "bbox": {
        "min_lat": 40.948503299999998716884874738752841949462890625,
        "min_lon": 28.740068300000000789395926403813064098358154296875,
        "max_lat": 40.9498650000000026238922146148979663848876953125,
        "max_lon": 28.74074170000000094660208560526371002197265625
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 02:17 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 35m
  • Data Points: 31 AIS positions
  • Period: 2026-08-24T02:32:32+00:00 to 2026-08-24T09:08:28+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 395.8999999999999772626324556767940521240234375,
    "points_in_zone": 31,
    "first_point": {
        "ts": "2026-08-24T02:32:32+00:00",
        "lat": 40.948696699999999282226781360805034637451171875,
        "lon": 28.740368300000000090221874415874481201171875
    },
    "last_point": {
        "ts": "2026-08-24T09:08:28+00:00",
        "lat": 40.9487299999999976307663018815219402313232421875,
        "lon": 28.740411699999999228793967631645500659942626953125
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 02:17 UTC 75.0%
  • Duration: 6h 35m
  • Radius: 88 meters
  • Data Points: 31 AIS positions
  • Centroid: 40.9491, 28.7403
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 88,
    "duration_minutes": 395.8999999999999772626324556767940521240234375,
    "points": 31,
    "centroid": {
        "lat": 40.94911219999999474339347216300666332244873046875,
        "lon": 28.7403255838709554836896131746470928192138671875
    },
    "bbox": {
        "min_lat": 40.94854670000000140817064675502479076385498046875,
        "min_lon": 28.740068300000000789395926403813064098358154296875,
        "max_lat": 40.9498650000000026238922146148979663848876953125,
        "max_lon": 28.74065829999999976962499204091727733612060546875
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 01:20 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 27m
  • Data Points: 32 AIS positions
  • Period: 2026-08-24T01:59:31+00:00 to 2026-08-24T08:26:37+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 387.1000000000000227373675443232059478759765625,
    "points_in_zone": 32,
    "first_point": {
        "ts": "2026-08-24T01:59:31+00:00",
        "lat": 40.9487816999999978406776790507137775421142578125,
        "lon": 28.7403699999999986403054208494722843170166015625
    },
    "last_point": {
        "ts": "2026-08-24T08:26:37+00:00",
        "lat": 40.949821700000001101216184906661510467529296875,
        "lon": 28.740508299999998342855178634636104106903076171875
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 01:20 UTC 75.0%
  • Duration: 6h 27m
  • Radius: 94 meters
  • Data Points: 32 AIS positions
  • Centroid: 40.9491, 28.7403
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 93.7000000000000028421709430404007434844970703125,
    "duration_minutes": 387.1000000000000227373675443232059478759765625,
    "points": 32,
    "centroid": {
        "lat": 40.94906135312499628753357683308422565460205078125,
        "lon": 28.7403131187499951693098410032689571380615234375
    },
    "bbox": {
        "min_lat": 40.94854670000000140817064675502479076385498046875,
        "min_lon": 28.740068300000000789395926403813064098358154296875,
        "max_lat": 40.9498650000000026238922146148979663848876953125,
        "max_lon": 28.74065170000000080108293332159519195556640625
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 00:44 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 5h 42m
  • Data Points: 32 AIS positions
  • Period: 2026-08-24T00:44:33+00:00 to 2026-08-24T06:26:32+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 342,
    "points_in_zone": 32,
    "first_point": {
        "ts": "2026-08-24T00:44:33+00:00",
        "lat": 40.94862669999999837955328985117375850677490234375,
        "lon": 28.74052830000000113841451820917427539825439453125
    },
    "last_point": {
        "ts": "2026-08-24T06:26:32+00:00",
        "lat": 40.9493532999999985122485668398439884185791015625,
        "lon": 28.740069999999999339479472837410867214202880859375
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 00:44 UTC 75.0%
  • Duration: 5h 42m
  • Radius: 55 meters
  • Data Points: 32 AIS positions
  • Centroid: 40.9489, 28.7403
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 54.7000000000000028421709430404007434844970703125,
    "duration_minutes": 342,
    "points": 32,
    "centroid": {
        "lat": 40.94888854062499916608430794440209865570068359375,
        "lon": 28.740286921874993453229762963019311428070068359375
    },
    "bbox": {
        "min_lat": 40.94854670000000140817064675502479076385498046875,
        "min_lon": 28.740068300000000789395926403813064098358154296875,
        "max_lat": 40.9493532999999985122485668398439884185791015625,
        "max_lon": 28.74052830000000113841451820917427539825439453125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 23, 2026 23:02 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 36m
  • Data Points: 30 AIS positions
  • Period: 2026-08-23T23:11:35+00:00 to 2026-08-24T05:47:36+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 396,
    "points_in_zone": 30,
    "first_point": {
        "ts": "2026-08-23T23:11:35+00:00",
        "lat": 40.94899170000000054869815357960760593414306640625,
        "lon": 28.74038170000000036452547647058963775634765625
    },
    "last_point": {
        "ts": "2026-08-24T05:47:36+00:00",
        "lat": 40.94912670000000076697688200511038303375244140625,
        "lon": 28.740098299999999653664417564868927001953125
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 23, 2026 23:02 UTC 75.0%
  • Duration: 6h 36m
  • Radius: 37 meters
  • Data Points: 30 AIS positions
  • Centroid: 40.9488, 28.7403
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 37.2000000000000028421709430404007434844970703125,
    "duration_minutes": 396,
    "points": 30,
    "centroid": {
        "lat": 40.94884083333331403764532296918332576751708984375,
        "lon": 28.740324890000000124246071209199726581573486328125
    },
    "bbox": {
        "min_lat": 40.94854670000000140817064675502479076385498046875,
        "min_lon": 28.7400717000000014422766980715095996856689453125,
        "max_lat": 40.94913999999999987267074175179004669189453125,
        "max_lon": 28.74052830000000113841451820917427539825439453125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 23, 2026 22:05 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 29m
  • Data Points: 28 AIS positions
  • Period: 2026-08-23T22:53:35+00:00 to 2026-08-24T05:23:32+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 389.8999999999999772626324556767940521240234375,
    "points_in_zone": 28,
    "first_point": {
        "ts": "2026-08-23T22:53:35+00:00",
        "lat": 40.94888329999999854180714464746415615081787109375,
        "lon": 28.740375000000000227373675443232059478759765625
    },
    "last_point": {
        "ts": "2026-08-24T05:23:32+00:00",
        "lat": 40.94907330000000200698195840232074260711669921875,
        "lon": 28.74008669999999909805410425178706645965576171875
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 23, 2026 22:05 UTC 75.0%
  • Duration: 6h 29m
  • Radius: 37 meters
  • Data Points: 28 AIS positions
  • Centroid: 40.9488, 28.7404
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 37.39999999999999857891452847979962825775146484375,
    "duration_minutes": 389.8999999999999772626324556767940521240234375,
    "points": 28,
    "centroid": {
        "lat": 40.9488056535714264327907585538923740386962890625,
        "lon": 28.740356967857138670296990312635898590087890625
    },
    "bbox": {
        "min_lat": 40.94854670000000140817064675502479076385498046875,
        "min_lon": 28.74008669999999909805410425178706645965576171875,
        "max_lat": 40.949088299999999662759364582598209381103515625,
        "max_lon": 28.74052830000000113841451820917427539825439453125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 23, 2026 20:08 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 30m
  • Data Points: 23 AIS positions
  • Period: 2026-08-23T20:08:29+00:00 to 2026-08-24T02:38:31+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 390,
    "points_in_zone": 23,
    "first_point": {
        "ts": "2026-08-23T20:08:29+00:00",
        "lat": 40.948841700000002674642018973827362060546875,
        "lon": 28.740240000000000009094947017729282379150390625
    },
    "last_point": {
        "ts": "2026-08-24T02:38:31+00:00",
        "lat": 40.9487333000000006677510100416839122772216796875,
        "lon": 28.74038170000000036452547647058963775634765625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 23, 2026 20:08 UTC 75.0%
  • Duration: 6h 30m
  • Radius: 22 meters
  • Data Points: 23 AIS positions
  • Centroid: 40.9488, 28.7404
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 22.39999999999999857891452847979962825775146484375,
    "duration_minutes": 390,
    "points": 23,
    "centroid": {
        "lat": 40.9487904391304340379065251909196376800537109375,
        "lon": 28.740374713043475907170432037673890590667724609375
    },
    "bbox": {
        "min_lat": 40.94862669999999837955328985117375850677490234375,
        "min_lon": 28.740240000000000009094947017729282379150390625,
        "max_lat": 40.94899170000000054869815357960760593414306640625,
        "max_lon": 28.74052830000000113841451820917427539825439453125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 23, 2026 19:38 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 36m
  • Data Points: 21 AIS positions
  • Period: 2026-08-23T19:53:31+00:00 to 2026-08-24T02:29:32+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 396,
    "points_in_zone": 21,
    "first_point": {
        "ts": "2026-08-23T19:53:31+00:00",
        "lat": 40.949195000000003119566827081143856048583984375,
        "lon": 28.7402000000000015234036254696547985076904296875
    },
    "last_point": {
        "ts": "2026-08-24T02:29:32+00:00",
        "lat": 40.94871669999999852507244213484227657318115234375,
        "lon": 28.740398299999998954490365576930344104766845703125
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 23, 2026 19:38 UTC 75.0%
  • Duration: 6h 36m
  • Radius: 44 meters
  • Data Points: 21 AIS positions
  • Centroid: 40.9488, 28.7404
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 43.7999999999999971578290569595992565155029296875,
    "duration_minutes": 396,
    "points": 21,
    "centroid": {
        "lat": 40.94882175238095811664607026614248752593994140625,
        "lon": 28.7403669857142887167356093414127826690673828125
    },
    "bbox": {
        "min_lat": 40.94862669999999837955328985117375850677490234375,
        "min_lon": 28.7402000000000015234036254696547985076904296875,
        "max_lat": 40.949195000000003119566827081143856048583984375,
        "max_lon": 28.74052830000000113841451820917427539825439453125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 23, 2026 18:35 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 35m
  • Data Points: 19 AIS positions
  • Period: 2026-08-23T18:50:33+00:00 to 2026-08-24T01:26:27+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 395.8999999999999772626324556767940521240234375,
    "points_in_zone": 19,
    "first_point": {
        "ts": "2026-08-23T18:50:33+00:00",
        "lat": 40.94880669999999867059159441851079463958740234375,
        "lon": 28.74040000000000105728759081102907657623291015625
    },
    "last_point": {
        "ts": "2026-08-24T01:26:27+00:00",
        "lat": 40.94874829999999832352841622196137905120849609375,
        "lon": 28.74039499999999947021933621726930141448974609375
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 23, 2026 18:35 UTC 75.0%
  • Duration: 6h 35m
  • Radius: 40 meters
  • Data Points: 19 AIS positions
  • Centroid: 40.9489, 28.7404
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 40.10000000000000142108547152020037174224853515625,
    "duration_minutes": 395.8999999999999772626324556767940521240234375,
    "points": 19,
    "centroid": {
        "lat": 40.94887921578947498346678912639617919921875,
        "lon": 28.7403513157894821006266283802688121795654296875
    },
    "bbox": {
        "min_lat": 40.94862669999999837955328985117375850677490234375,
        "min_lon": 28.7402000000000015234036254696547985076904296875,
        "max_lat": 40.949223299999999881038093008100986480712890625,
        "max_lon": 28.74052830000000113841451820917427539825439453125
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 23, 2026 16:02 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 36m
  • Data Points: 22 AIS positions
  • Period: 2026-08-23T16:41:29+00:00 to 2026-08-23T23:17:33+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 396.1000000000000227373675443232059478759765625,
    "points_in_zone": 22,
    "first_point": {
        "ts": "2026-08-23T16:41:29+00:00",
        "lat": 40.94823170000000089885361376218497753143310546875,
        "lon": 28.740815000000001333546606474556028842926025390625
    },
    "last_point": {
        "ts": "2026-08-23T23:17:33+00:00",
        "lat": 40.94889500000000026602720026858150959014892578125,
        "lon": 28.740351700000001500256985309533774852752685546875
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 23, 2026 16:02 UTC 75.0%
  • Duration: 6h 36m
  • Radius: 71 meters
  • Data Points: 22 AIS positions
  • Centroid: 40.9488, 28.7404
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 71.400000000000005684341886080801486968994140625,
    "duration_minutes": 396.1000000000000227373675443232059478759765625,
    "points": 22,
    "centroid": {
        "lat": 40.94879674545455117140591028146445751190185546875,
        "lon": 28.740410227272729315473043243400752544403076171875
    },
    "bbox": {
        "min_lat": 40.94823170000000089885361376218497753143310546875,
        "min_lon": 28.7402000000000015234036254696547985076904296875,
        "max_lat": 40.949223299999999881038093008100986480712890625,
        "max_lon": 28.740815000000001333546606474556028842926025390625
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18

Recent Position Data

Time (UTC) Lat Lon Speed Course Zone
Aug 27 22:37 35.8407 27.4169 11.2 kn 157.9° Northern Baltic Surveillance Zone
Aug 27 22:35 35.8450 27.4147 11.2 kn 157.4° Northern Baltic Surveillance Zone
Aug 27 17:11 36.5568 26.6376 10.7 kn 140.8° North Sea Surveillance Zone
Aug 27 17:09 36.5603 26.6341 10.7 kn 140.5° North Sea Surveillance Zone
Aug 27 17:05 36.5696 26.6246 10.7 kn 140.0° North Sea Surveillance Zone
Aug 27 17:03 36.5741 26.6197 10.7 kn 137.3° North Sea Surveillance Zone
Aug 27 17:02 36.5763 26.6172 10.7 kn 137.1° North Sea Surveillance Zone
Aug 27 17:00 36.5807 26.6121 10.6 kn 136.8° North Sea Surveillance Zone
Aug 27 16:59 36.5846 26.6075 10.7 kn 136.8° North Sea Surveillance Zone
Aug 27 16:54 36.5948 26.5955 10.7 kn 136.4° North Sea Surveillance Zone
Aug 27 16:52 36.5980 26.5917 10.7 kn 136.1° North Sea Surveillance Zone
Aug 27 16:47 36.6099 26.5775 10.7 kn 135.9° North Sea Surveillance Zone
Aug 27 16:43 36.6176 26.5684 10.8 kn 136.0° North Sea Surveillance Zone
Aug 27 16:37 36.6325 26.5506 10.8 kn 136.0° North Sea Surveillance Zone
Aug 27 16:36 36.6346 26.5480 10.9 kn 136.2° North Sea Surveillance Zone
Aug 27 16:35 36.6368 26.5453 10.9 kn 136.3° North Sea Surveillance Zone
Aug 27 16:32 36.6434 26.5374 10.9 kn 135.7° North Sea Surveillance Zone
Aug 27 16:27 36.6535 26.5257 11.1 kn 141.7° North Sea Surveillance Zone
Aug 27 15:44 36.7587 26.4230 11.0 kn 141.0° North Sea Surveillance Zone
Aug 27 15:35 36.7790 26.4026 11.0 kn 140.5° North Sea Surveillance 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.