ZHENG HE 3

IMO 9264465

Vessel information

Vessel Name ZHENG HE 3
IMO Number 9264465
MMSI 311001785
Vessel Type Tanker
Flag 🇧🇸 Bahamas
Call Sign C6IV6
Length 144 m
Beam 24 m

Detected Events (32)

Zone Dwell Central Atlantic Surveillance Zone
May 7, 2026 08:33 UTC 80.0% ▼
  • Zone: Central Atlantic Surveillance Zone
  • Duration: 1h 2m
  • Data Points: 9 AIS positions
  • Period: 2026-05-07T08:33:58+00:00 to 2026-05-07T09:36:08+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_088",
    "zone_name": "Central Atlantic Surveillance Zone",
    "dwell_minutes": 62.2000000000000028421709430404007434844970703125,
    "points_in_zone": 9,
    "first_point": {
        "ts": "2026-05-07T08:33:58+00:00",
        "lat": 37.263131700000002410888555459678173065185546875,
        "lon": 26.0314699999999987767296261154115200042724609375
    },
    "last_point": {
        "ts": "2026-05-07T09:36:08+00:00",
        "lat": 37.467753299999998262137523852288722991943359375,
        "lon": 25.89793999999999840611053514294326305389404296875
    }
}
Methodology: 2026.01.18
Zone Dwell Central Atlantic Surveillance Zone
May 7, 2026 07:41 UTC 80.0% ▼
  • Zone: Central Atlantic Surveillance Zone
  • Duration: 1h 54m
  • Data Points: 20 AIS positions
  • Period: 2026-05-07T07:41:28+00:00 to 2026-05-07T09:36:08+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_088",
    "zone_name": "Central Atlantic Surveillance Zone",
    "dwell_minutes": 114.7000000000000028421709430404007434844970703125,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-05-07T07:41:28+00:00",
        "lat": 37.0873433000000005677065928466618061065673828125,
        "lon": 26.14023329999999845085767447017133235931396484375
    },
    "last_point": {
        "ts": "2026-05-07T09:36:08+00:00",
        "lat": 37.467753299999998262137523852288722991943359375,
        "lon": 25.89793999999999840611053514294326305389404296875
    }
}
Methodology: 2026.01.18
Ais Gap🛰️✓ Brittany Coast Surveillance Zone
May 7, 2026 02:07 UTC 70.0% ▼
  • Gap Duration: 4h 59m
  • Last Seen: 2026-05-07T02:07:06+00:00 at 36.2116, 27.1523 (Zone: Brittany Coast Surveillance Zone)
  • Next Seen: 2026-05-07T07:06:37+00:00 at 36.9722, 26.2085

🛰️ Gap Corroboration

🛰️ Imagery Available

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

SAR Imagery (Sentinel-1)

Status: ✓ Snapshot available

SAR snapshot available for review

Scene: S1A_IW_GRDH_1SDV_20260507T042402_20260507T042427_064406_081C5E_C8B6_COG • Time: 2026-05-07T04:24:02.900801Z

SAR preview

SAR coverage thumbnail

VIIRS Thermal Anomaly

Status: ✗ No detections

No VIIRS thermal/light detections in corridor

Searched: 2026-05-07T07:15:11.515992+00:00

Show Raw Evidence JSON
{
    "gap_minutes": 299.5,
    "last_seen": {
        "ts": "2026-05-07T02:07:06+00:00",
        "lat": 36.211641700000001264925231225788593292236328125,
        "lon": 27.152300000000000324007487506605684757232666015625,
        "sog": 13,
        "zone_id": "discovered_070"
    },
    "next_seen": {
        "ts": "2026-05-07T07:06:37+00:00",
        "lat": 36.9721617000000009056748240254819393157958984375,
        "lon": 26.208496700000001311536834691651165485382080078125,
        "zone_ids": [
            "discovered_086"
        ]
    },
    "gap_enrichment": {
        "status": "done",
        "corridor": {
            "start": {
                "lat": 36.211641700000001264925231225788593292236328125,
                "lon": 27.152300000000000324007487506605684757232666015625,
                "ts": "2026-05-07T02:07:06+00:00"
            },
            "end": {
                "lat": 36.9721617000000009056748240254819393157958984375,
                "lon": 26.208496700000001311536834691651165485382080078125,
                "ts": "2026-05-07T07:06:37+00:00"
            },
            "bbox": {
                "min_lat": 36.03146199999999765850589028559625148773193359375,
                "min_lon": 25.98408500000000032059688237495720386505126953125,
                "max_lat": 37.15234199999999731289790361188352108001708984375,
                "max_lon": 27.3767110000000002401066012680530548095703125
            },
            "buffer_km": 20
        },
        "sar": {
            "status": "snapshot",
            "scene_id": "S1A_IW_GRDH_1SDV_20260507T042402_20260507T042427_064406_081C5E_C8B6_COG",
            "scene_time": "2026-05-07T04:24:02.900801Z",
            "platform": "sentinel-1a",
            "assets": {
                "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/05\/event_494899_thumbnail_20260507071515.png",
                "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/05\/event_494899_thumbnail_20260507071515.png",
                "source": "copernicus_dataspace"
            },
            "notes": "SAR snapshot available for review"
        },
        "viirs": {
            "status": "not_found",
            "notes": "No VIIRS thermal\/light detections in corridor"
        },
        "searched_at": "2026-05-07T07:15:11.515992+00:00"
    }
}
Methodology: 2026.01.18
Zone Dwell Brittany Coast Surveillance Zone
May 7, 2026 00:03 UTC 80.0% ▼
  • Zone: Brittany Coast Surveillance Zone
  • Duration: 2h 4m
  • Data Points: 45 AIS positions
  • Period: 2026-05-07T00:03:07+00:00 to 2026-05-07T02:07:06+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_070",
    "zone_name": "Brittany Coast Surveillance Zone",
    "dwell_minutes": 124,
    "points_in_zone": 45,
    "first_point": {
        "ts": "2026-05-07T00:03:07+00:00",
        "lat": 35.8907566999999971812940202653408050537109375,
        "lon": 27.537131699999999767669578432105481624603271484375
    },
    "last_point": {
        "ts": "2026-05-07T02:07:06+00:00",
        "lat": 36.211641700000001264925231225788593292236328125,
        "lon": 27.152300000000000324007487506605684757232666015625
    }
}
Methodology: 2026.01.18
Zone Dwell Brittany Coast Surveillance Zone
May 6, 2026 23:00 UTC 80.0% ▼
  • Zone: Brittany Coast Surveillance Zone
  • Duration: 3h 7m
  • Data Points: 52 AIS positions
  • Period: 2026-05-06T23:00:07+00:00 to 2026-05-07T02:07:06+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_070",
    "zone_name": "Brittany Coast Surveillance Zone",
    "dwell_minutes": 187,
    "points_in_zone": 52,
    "first_point": {
        "ts": "2026-05-06T23:00:07+00:00",
        "lat": 35.726190000000002555680111981928348541259765625,
        "lon": 27.711529999999999773763192933984100818634033203125
    },
    "last_point": {
        "ts": "2026-05-07T02:07:06+00:00",
        "lat": 36.211641700000001264925231225788593292236328125,
        "lon": 27.152300000000000324007487506605684757232666015625
    }
}
Methodology: 2026.01.18
Zone Dwell Brittany Coast Surveillance Zone
May 6, 2026 22:54 UTC 80.0% ▼
  • Zone: Brittany Coast Surveillance Zone
  • Duration: 3h 13m
  • Data Points: 53 AIS positions
  • Period: 2026-05-06T22:54:06+00:00 to 2026-05-07T02:07:06+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_070",
    "zone_name": "Brittany Coast Surveillance Zone",
    "dwell_minutes": 193,
    "points_in_zone": 53,
    "first_point": {
        "ts": "2026-05-06T22:54:06+00:00",
        "lat": 35.7102849999999989449861459434032440185546875,
        "lon": 27.72822670000000044865373638458549976348876953125
    },
    "last_point": {
        "ts": "2026-05-07T02:07:06+00:00",
        "lat": 36.211641700000001264925231225788593292236328125,
        "lon": 27.152300000000000324007487506605684757232666015625
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Sanctioned Vessel Zone
May 2, 2026 14:02 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Sanctioned Vessel Zone
  • Duration: 4h 21m
  • Data Points: 3 AIS positions
  • Period: 2026-05-02T14:02:42+00:00 to 2026-05-02T18:23:52+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_018",
    "zone_name": "Eastern Mediterranean Sanctioned Vessel Zone",
    "dwell_minutes": 261.19999999999998863131622783839702606201171875,
    "points_in_zone": 3,
    "first_point": {
        "ts": "2026-05-02T14:02:42+00:00",
        "lat": 31.537189999999998946123014320619404315948486328125,
        "lon": 32.39562500000000255795384873636066913604736328125
    },
    "last_point": {
        "ts": "2026-05-02T18:23:52+00:00",
        "lat": 31.536971699999998719476934638805687427520751953125,
        "lon": 32.3956500000000033878677641041576862335205078125
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Sanctioned Vessel Zone
May 2, 2026 13:04 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Sanctioned Vessel Zone
  • Duration: 5h 19m
  • Data Points: 17 AIS positions
  • Period: 2026-05-02T13:04:13+00:00 to 2026-05-02T18:23:52+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_018",
    "zone_name": "Eastern Mediterranean Sanctioned Vessel Zone",
    "dwell_minutes": 319.6000000000000227373675443232059478759765625,
    "points_in_zone": 17,
    "first_point": {
        "ts": "2026-05-02T13:04:13+00:00",
        "lat": 31.537253299999999711644704802893102169036865234375,
        "lon": 32.3955782999999968296833685599267482757568359375
    },
    "last_point": {
        "ts": "2026-05-02T18:23:52+00:00",
        "lat": 31.536971699999998719476934638805687427520751953125,
        "lon": 32.3956500000000033878677641041576862335205078125
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Sanctioned Vessel Zone
May 2, 2026 13:04 UTC 75.0% ▼
  • Duration: 5h 19m
  • Radius: 22 meters
  • Data Points: 17 AIS positions
  • Centroid: 31.5372, 32.3956
  • Zone: Eastern Mediterranean Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 22.199999999999999289457264239899814128875732421875,
    "duration_minutes": 319.6000000000000227373675443232059478759765625,
    "points": 17,
    "centroid": {
        "lat": 31.537170388235296059065149165689945220947265625,
        "lon": 32.39562097058823297857088618911802768707275390625
    },
    "bbox": {
        "min_lat": 31.536971699999998719476934638805687427520751953125,
        "min_lon": 32.39556999999999931105776340700685977935791015625,
        "max_lat": 31.537254999999998261728251236490905284881591796875,
        "max_lon": 32.3956749999999971123543218709528446197509765625
    },
    "zone_id": "discovered_018"
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Sanctioned Vessel Zone
May 2, 2026 12:01 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Sanctioned Vessel Zone
  • Duration: 6h 22m
  • Data Points: 32 AIS positions
  • Period: 2026-05-02T12:01:42+00:00 to 2026-05-02T18:23:52+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_018",
    "zone_name": "Eastern Mediterranean Sanctioned Vessel Zone",
    "dwell_minutes": 382.19999999999998863131622783839702606201171875,
    "points_in_zone": 32,
    "first_point": {
        "ts": "2026-05-02T12:01:42+00:00",
        "lat": 31.537561700000001252419679076410830020904541015625,
        "lon": 32.3953733000000028141585062257945537567138671875
    },
    "last_point": {
        "ts": "2026-05-02T18:23:52+00:00",
        "lat": 31.536971699999998719476934638805687427520751953125,
        "lon": 32.3956500000000033878677641041576862335205078125
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Sanctioned Vessel Zone
May 2, 2026 12:01 UTC 75.0% ▼
  • Duration: 6h 22m
  • Radius: 39 meters
  • Data Points: 32 AIS positions
  • Centroid: 31.5373, 32.3955
  • Zone: Eastern Mediterranean Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 38.60000000000000142108547152020037174224853515625,
    "duration_minutes": 382.19999999999998863131622783839702606201171875,
    "points": 32,
    "centroid": {
        "lat": 31.537304065624997662098394357599318027496337890625,
        "lon": 32.39552795937499496403688681311905384063720703125
    },
    "bbox": {
        "min_lat": 31.536971699999998719476934638805687427520751953125,
        "min_lon": 32.39530830000000349855326930992305278778076171875,
        "max_lat": 31.537561700000001252419679076410830020904541015625,
        "max_lon": 32.3956749999999971123543218709528446197509765625
    },
    "zone_id": "discovered_018"
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Sanctioned Vessel Zone
May 2, 2026 11:13 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Sanctioned Vessel Zone
  • Duration: 6h 31m
  • Data Points: 35 AIS positions
  • Period: 2026-05-02T11:52:23+00:00 to 2026-05-02T18:23:52+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_018",
    "zone_name": "Eastern Mediterranean Sanctioned Vessel Zone",
    "dwell_minutes": 391.5,
    "points_in_zone": 35,
    "first_point": {
        "ts": "2026-05-02T11:52:23+00:00",
        "lat": 31.53763670000000018944774637930095195770263671875,
        "lon": 32.3953417000000030157025321386754512786865234375
    },
    "last_point": {
        "ts": "2026-05-02T18:23:52+00:00",
        "lat": 31.536971699999998719476934638805687427520751953125,
        "lon": 32.3956500000000033878677641041576862335205078125
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Sanctioned Vessel Zone
May 2, 2026 11:13 UTC 75.0% ▼
  • Duration: 6h 31m
  • Radius: 42 meters
  • Data Points: 35 AIS positions
  • Centroid: 31.5373, 32.3955
  • Zone: Eastern Mediterranean Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 41.7999999999999971578290569595992565155029296875,
    "duration_minutes": 391.5,
    "points": 35,
    "centroid": {
        "lat": 31.537329148571433989900469896383583545684814453125,
        "lon": 32.39551089714285581067088060081005096435546875
    },
    "bbox": {
        "min_lat": 31.536971699999998719476934638805687427520751953125,
        "min_lon": 32.39530830000000349855326930992305278778076171875,
        "max_lat": 31.53763670000000018944774637930095195770263671875,
        "max_lon": 32.3956749999999971123543218709528446197509765625
    },
    "zone_id": "discovered_018"
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Sanctioned Vessel Zone
May 2, 2026 10:37 UTC 75.0% ▼
  • Duration: 3h 28m
  • Radius: 614 meters
  • Data Points: 40 AIS positions
  • Centroid: 31.5373, 32.3952
  • Zone: Eastern Mediterranean Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 613.5,
    "duration_minutes": 208,
    "points": 40,
    "centroid": {
        "lat": 31.53732604499999325753378798253834247589111328125,
        "lon": 32.3952389100000033295145840384066104888916015625
    },
    "bbox": {
        "min_lat": 31.533023299999999977671905071474611759185791015625,
        "min_lon": 32.38915670000000091022229753434658050537109375,
        "max_lat": 31.539190000000001390390025335364043712615966796875,
        "max_lon": 32.3956749999999971123543218709528446197509765625
    },
    "zone_id": "discovered_018"
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Sanctioned Vessel Zone
May 2, 2026 10:16 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Sanctioned Vessel Zone
  • Duration: 3h 48m
  • Data Points: 48 AIS positions
  • Period: 2026-05-02T10:16:54+00:00 to 2026-05-02T14:05:24+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_018",
    "zone_name": "Eastern Mediterranean Sanctioned Vessel Zone",
    "dwell_minutes": 228.5,
    "points_in_zone": 48,
    "first_point": {
        "ts": "2026-05-02T10:16:54+00:00",
        "lat": 31.6052083000000010315488907508552074432373046875,
        "lon": 32.35944330000000235258994507603347301483154296875
    },
    "last_point": {
        "ts": "2026-05-02T14:05:24+00:00",
        "lat": 31.537196699999999083274815347976982593536376953125,
        "lon": 32.39560329999999765959728392772376537322998046875
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Sanctioned Vessel Zone
May 2, 2026 08:57 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Sanctioned Vessel Zone
  • Duration: 5h 7m
  • Data Points: 49 AIS positions
  • Period: 2026-05-02T08:57:52+00:00 to 2026-05-02T14:05:24+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_018",
    "zone_name": "Eastern Mediterranean Sanctioned Vessel Zone",
    "dwell_minutes": 307.5,
    "points_in_zone": 49,
    "first_point": {
        "ts": "2026-05-02T08:57:52+00:00",
        "lat": 31.881060000000001508624336565844714641571044921875,
        "lon": 32.36168169999999832953108125366270542144775390625
    },
    "last_point": {
        "ts": "2026-05-02T14:05:24+00:00",
        "lat": 31.537196699999999083274815347976982593536376953125,
        "lon": 32.39560329999999765959728392772376537322998046875
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Sanctioned Vessel Zone
May 2, 2026 02:34 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Sanctioned Vessel Zone
  • Duration: 6h 23m
  • Data Points: 3 AIS positions
  • Period: 2026-05-02T02:34:24+00:00 to 2026-05-02T08:57:52+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_018",
    "zone_name": "Eastern Mediterranean Sanctioned Vessel Zone",
    "dwell_minutes": 383.5,
    "points_in_zone": 3,
    "first_point": {
        "ts": "2026-05-02T02:34:24+00:00",
        "lat": 32.43549170000000003710738383233547210693359375,
        "lon": 32.29107830000000234349499805830419063568115234375
    },
    "last_point": {
        "ts": "2026-05-02T08:57:52+00:00",
        "lat": 31.881060000000001508624336565844714641571044921875,
        "lon": 32.36168169999999832953108125366270542144775390625
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Sanctioned Vessel Zone
May 1, 2026 23:05 UTC 93/100 ▼
Vessel A: IMO 9264465 (ZHENG HE 3) Bahamas
Vessel B: IMO 9173032 (NEXUS) Antigua Barbuda
  • Minimum Distance: 29 meters
  • Average Distance: 45 meters
  • Duration: 3h 26m
  • Period: 2026-05-01T23:12:23+00:00 to 2026-05-02T02:38:23+00:00
  • Vessel A Avg Speed: 0.8 knots
  • Vessel B Avg Speed: 0.7 knots
  • Zone: Eastern Mediterranean Sanctioned Vessel Zone

Confidence Analysis

Score: 93/100

High-confidence STS candidate. Two tankers (ZHENG HE 3 and NEXUS) maintained close proximity (min 29m, avg 45m) for 206 minutes. Both vessels were slow-moving (avg speeds 0.8 and 0.7 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctioned Vessel Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 29m, avg 45m
Duration25/25Duration 206 minutes
Speed Stability18/20both very slow; very stable speeds
Distance Consistency15/15Distance variance ±26m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 311001785,
        "imo": 9264465,
        "name": "ZHENG HE 3",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 304414000,
        "imo": 9173032,
        "name": "NEXUS",
        "flag": "Antigua Barbuda"
    },
    "min_distance_m": 29.10000000000000142108547152020037174224853515625,
    "avg_distance_m": 45,
    "distance_consistency_m": 25.60000000000000142108547152020037174224853515625,
    "duration_minutes": 206,
    "overlap_duration_s": 12360,
    "speed_a_avg": 0.75,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.7399999999999999911182158029987476766109466552734375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.75,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0.7399999999999999911182158029987476766109466552734375,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        }
    },
    "time_window": {
        "start": "2026-05-01T23:12:23+00:00",
        "end": "2026-05-02T02:38:23+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
    },
    "zone_id": "discovered_018",
    "zone_name": "Eastern Mediterranean Sanctioned Vessel Zone",
    "score": {
        "value": 93,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 29m, avg 45m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 206 minutes"
            },
            "speed_stability": {
                "score": 18,
                "max": 20,
                "detail": "both very slow; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b126m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Sanctioned Vessel Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZHENG HE 3 and NEXUS) maintained close proximity (min 29m, avg 45m) for 206 minutes. Both vessels were slow-moving (avg speeds 0.8 and 0.7 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctioned Vessel Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Sanctioned Vessel Zone
May 1, 2026 23:04 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Sanctioned Vessel Zone
  • Duration: 3h 34m
  • Data Points: 18 AIS positions
  • Period: 2026-05-01T23:04:14+00:00 to 2026-05-02T02:38:23+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_018",
    "zone_name": "Eastern Mediterranean Sanctioned Vessel Zone",
    "dwell_minutes": 214.19999999999998863131622783839702606201171875,
    "points_in_zone": 18,
    "first_point": {
        "ts": "2026-05-01T23:04:14+00:00",
        "lat": 32.4576066999999994777681422419846057891845703125,
        "lon": 32.3365466999999995323378243483603000640869140625
    },
    "last_point": {
        "ts": "2026-05-02T02:38:23+00:00",
        "lat": 32.43526669999999967330950312316417694091796875,
        "lon": 32.29000669999999928450051811523735523223876953125
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Sanctioned Vessel Zone
May 1, 2026 22:36 UTC 80/100 ▼
Vessel A: IMO 9173032 (NEXUS) Antigua Barbuda
Vessel B: IMO 9264465 (ZHENG HE 3) Bahamas
  • Minimum Distance: 29 meters
  • Average Distance: 54 meters
  • Duration: 1h 12m
  • Period: 2026-05-01T22:36:28+00:00 to 2026-05-01T23:48:26+00:00
  • Vessel A Avg Speed: 0.8 knots
  • Vessel B Avg Speed: 0.8 knots
  • Zone: Eastern Mediterranean Sanctioned Vessel Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (NEXUS and ZHENG HE 3) maintained close proximity (min 29m, avg 54m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.8 and 0.8 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctioned Vessel Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 29m, avg 54m
Duration15/25Duration 72 minutes
Speed Stability18/20both very slow; very stable speeds
Distance Consistency12/15Distance variance ±46m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 304414000,
        "imo": 9173032,
        "name": "NEXUS",
        "flag": "Antigua Barbuda"
    },
    "vessel_b": {
        "mmsi": 311001785,
        "imo": 9264465,
        "name": "ZHENG HE 3",
        "flag": "Bahamas"
    },
    "min_distance_m": 29.10000000000000142108547152020037174224853515625,
    "avg_distance_m": 54,
    "distance_consistency_m": 46.10000000000000142108547152020037174224853515625,
    "duration_minutes": 72,
    "overlap_duration_s": 4318,
    "speed_a_avg": 0.75,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.75,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.75,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0.75,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        }
    },
    "time_window": {
        "start": "2026-05-01T22:36:28+00:00",
        "end": "2026-05-01T23:48:26+00:00"
    },
    "points_count": {
        "vessel_a": 25,
        "vessel_b": 25
    },
    "zone_id": "discovered_018",
    "zone_name": "Eastern Mediterranean Sanctioned Vessel Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 29m, avg 54m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 72 minutes"
            },
            "speed_stability": {
                "score": 18,
                "max": 20,
                "detail": "both very slow; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b146m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Sanctioned Vessel Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NEXUS and ZHENG HE 3) maintained close proximity (min 29m, avg 54m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.8 and 0.8 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Sanctioned Vessel Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Sanctioned Vessel Zone
May 1, 2026 22:04 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Sanctioned Vessel Zone
  • Duration: 4h 33m
  • Data Points: 28 AIS positions
  • Period: 2026-05-01T22:04:53+00:00 to 2026-05-02T02:38:23+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_018",
    "zone_name": "Eastern Mediterranean Sanctioned Vessel Zone",
    "dwell_minutes": 273.5,
    "points_in_zone": 28,
    "first_point": {
        "ts": "2026-05-01T22:04:53+00:00",
        "lat": 32.46932170000000184018063009716570377349853515625,
        "lon": 32.343653299999999717329046688973903656005859375
    },
    "last_point": {
        "ts": "2026-05-02T02:38:23+00:00",
        "lat": 32.43526669999999967330950312316417694091796875,
        "lon": 32.29000669999999928450051811523735523223876953125
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Sanctioned Vessel Zone
May 1, 2026 22:04 UTC 75.0% ▼
  • Duration: 1h 36m
  • Radius: 1,458 meters
  • Data Points: 26 AIS positions
  • Centroid: 32.4578, 32.3361
  • Zone: Eastern Mediterranean Sanctioned Vessel Zone
Show Raw Evidence JSON
{
    "radius_m": 1457.700000000000045474735088646411895751953125,
    "duration_minutes": 96.2000000000000028421709430404007434844970703125,
    "points": 26,
    "centroid": {
        "lat": 32.45782032692307694787814398296177387237548828125,
        "lon": 32.33614686153845951821494963951408863067626953125
    },
    "bbox": {
        "min_lat": 32.4512433000000015681507647968828678131103515625,
        "min_lon": 32.33048169999999998935891198925673961639404296875,
        "max_lat": 32.46932170000000184018063009716570377349853515625,
        "max_lon": 32.343653299999999717329046688973903656005859375
    },
    "zone_id": "discovered_018"
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Sanctioned Vessel Zone
May 1, 2026 05:30 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Sanctioned Vessel Zone
  • Duration: 3h 54m
  • Data Points: 14 AIS positions
  • Period: 2026-05-01T05:30:23+00:00 to 2026-05-01T09:25:03+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_018",
    "zone_name": "Eastern Mediterranean Sanctioned Vessel Zone",
    "dwell_minutes": 234.69999999999998863131622783839702606201171875,
    "points_in_zone": 14,
    "first_point": {
        "ts": "2026-05-01T05:30:23+00:00",
        "lat": 31.544636700000001638954927329905331134796142578125,
        "lon": 32.335561699999999518695403821766376495361328125
    },
    "last_point": {
        "ts": "2026-05-01T09:25:03+00:00",
        "lat": 32.34872829999999765959728392772376537322998046875,
        "lon": 32.3022849999999976944309310056269168853759765625
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Sanctioned Vessel Zone
May 1, 2026 02:13 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Sanctioned Vessel Zone
  • Duration: 3h 44m
  • Data Points: 15 AIS positions
  • Period: 2026-05-01T02:13:46+00:00 to 2026-05-01T05:58:42+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_018",
    "zone_name": "Eastern Mediterranean Sanctioned Vessel Zone",
    "dwell_minutes": 224.900000000000005684341886080801486968994140625,
    "points_in_zone": 15,
    "first_point": {
        "ts": "2026-05-01T02:13:46+00:00",
        "lat": 31.532088300000001623857315280474722385406494140625,
        "lon": 32.34690169999999653782651876099407672882080078125
    },
    "last_point": {
        "ts": "2026-05-01T05:58:42+00:00",
        "lat": 31.613969999999998350403984659351408481597900390625,
        "lon": 32.2980299999999971305442159064114093780517578125
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_016
May 1, 2026 01:55 UTC 80.0% ▼
  • Zone: discovered_016
  • Duration: 4h 2m
  • Data Points: 16 AIS positions
  • Period: 2026-05-01T01:55:46+00:00 to 2026-05-01T05:58:42+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_016",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "dwell_minutes": 242.900000000000005684341886080801486968994140625,
    "points_in_zone": 16,
    "first_point": {
        "ts": "2026-05-01T01:55:46+00:00",
        "lat": 31.53188829999999853725967113859951496124267578125,
        "lon": 32.346693299999998316707205958664417266845703125
    },
    "last_point": {
        "ts": "2026-05-01T05:58:42+00:00",
        "lat": 31.613969999999998350403984659351408481597900390625,
        "lon": 32.2980299999999971305442159064114093780517578125
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Sanctioned Vessel Zone
May 1, 2026 01:55 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Sanctioned Vessel Zone
  • Duration: 4h 2m
  • Data Points: 16 AIS positions
  • Period: 2026-05-01T01:55:46+00:00 to 2026-05-01T05:58:42+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_018",
    "zone_name": "Eastern Mediterranean Sanctioned Vessel Zone",
    "dwell_minutes": 242.900000000000005684341886080801486968994140625,
    "points_in_zone": 16,
    "first_point": {
        "ts": "2026-05-01T01:55:46+00:00",
        "lat": 31.53188829999999853725967113859951496124267578125,
        "lon": 32.346693299999998316707205958664417266845703125
    },
    "last_point": {
        "ts": "2026-05-01T05:58:42+00:00",
        "lat": 31.613969999999998350403984659351408481597900390625,
        "lon": 32.2980299999999971305442159064114093780517578125
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_016
Apr 30, 2026 19:37 UTC 80.0% ▼
  • Zone: discovered_016
  • Duration: 6h 24m
  • Data Points: 5 AIS positions
  • Period: 2026-04-30T19:49:46+00:00 to 2026-05-01T02:13:46+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_016",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "dwell_minutes": 384,
    "points_in_zone": 5,
    "first_point": {
        "ts": "2026-04-30T19:49:46+00:00",
        "lat": 31.532606699999998767225406481884419918060302734375,
        "lon": 32.3449166999999988547642715275287628173828125
    },
    "last_point": {
        "ts": "2026-05-01T02:13:46+00:00",
        "lat": 31.532088300000001623857315280474722385406494140625,
        "lon": 32.34690169999999653782651876099407672882080078125
    }
}
Methodology: 2026.01.18
Zone Dwell Dodecanese Sea Monitoring Zone
Feb 14, 2026 05:06 UTC 80.0% ▼
  • Zone: Dodecanese Sea Monitoring Zone
  • Duration: 1h 3m
  • Data Points: 51 AIS positions
  • Period: 2026-02-14T05:06:28+00:00 to 2026-02-14T06:10:07+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_069",
    "zone_name": "Dodecanese Sea Monitoring Zone",
    "dwell_minutes": 63.60000000000000142108547152020037174224853515625,
    "points_in_zone": 51,
    "first_point": {
        "ts": "2026-02-14T05:06:28+00:00",
        "lat": 37.113128299999999626379576511681079864501953125,
        "lon": 26.59512670000000156278474605642259120941162109375
    },
    "last_point": {
        "ts": "2026-02-14T06:10:07+00:00",
        "lat": 36.925375000000002501110429875552654266357421875,
        "lon": 26.67037499999999994315658113919198513031005859375
    }
}
Methodology: 2026.01.18
Zone Dwell Novorossiysk/Sheskharis Terminal
Feb 11, 2026 01:03 UTC 80.0% ▼
  • Zone: Novorossiysk/Sheskharis Terminal
  • Duration: 1h 5m
  • Data Points: 10 AIS positions
  • Period: 2026-02-11T01:03:45+00:00 to 2026-02-11T02:09:23+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_novorossiysk",
    "zone_name": "Novorossiysk\/Sheskharis Terminal",
    "dwell_minutes": 65.599999999999994315658113919198513031005859375,
    "points_in_zone": 10,
    "first_point": {
        "ts": "2026-02-11T01:03:45+00:00",
        "lat": 44.89526670000000052596078603528439998626708984375,
        "lon": 38.06480169999999674246282665990293025970458984375
    },
    "last_point": {
        "ts": "2026-02-11T02:09:23+00:00",
        "lat": 44.7281150000000025102053768932819366455078125,
        "lon": 37.7748100000000022191670723259449005126953125
    }
}
Methodology: 2026.01.18
Zone Dwell Novorossiysk/Sheskharis Terminal
Feb 11, 2026 00:36 UTC 80.0% ▼
  • Zone: Novorossiysk/Sheskharis Terminal
  • Duration: 1h 32m
  • Data Points: 14 AIS positions
  • Period: 2026-02-11T00:36:57+00:00 to 2026-02-11T02:09:23+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_novorossiysk",
    "zone_name": "Novorossiysk\/Sheskharis Terminal",
    "dwell_minutes": 92.400000000000005684341886080801486968994140625,
    "points_in_zone": 14,
    "first_point": {
        "ts": "2026-02-11T00:36:57+00:00",
        "lat": 44.7144167000000010148141882382333278656005859375,
        "lon": 37.78581669999999803621903993189334869384765625
    },
    "last_point": {
        "ts": "2026-02-11T02:09:23+00:00",
        "lat": 44.7281150000000025102053768932819366455078125,
        "lon": 37.7748100000000022191670723259449005126953125
    }
}
Methodology: 2026.01.18
Ais Gap🛰️✓ Southeast Aegean Monitoring Zone
Jan 20, 2026 06:54 UTC 70.0% ▼
  • Gap Duration: 5h 7m
  • Last Seen: 2026-01-20T06:54:27+00:00 at 36.9074, 26.6685 (Zone: Southeast Aegean Monitoring Zone)
  • Next Seen: 2026-01-20T12:01:38+00:00 at 36.0119, 27.3543

🛰️ Gap Corroboration

🛰️ Imagery Available

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

SAR Imagery (Sentinel-1)

Status: ✓ Snapshot available

SAR snapshot available for review

Scene: S1C_IW_GRDH_1SDV_20260120T041509_20260120T041534_005982_00C002_D9AA_COG • Time: 2026-01-20T04:15:09.432317Z

SAR preview

SAR coverage thumbnail

VIIRS Thermal Anomaly

Status: ✓ Signal detected

1 thermal/light anomalies detected

Detections: 1 thermal anomalies

View detections
LocationBrightnessTime
36.8207, 27.0846325.7 K2026-01-20T11:14:00+00:00

Searched: 2026-01-23T00:45:59.640766+00:00

Show Raw Evidence JSON
{
    "gap_minutes": 307.19999999999998863131622783839702606201171875,
    "last_seen": {
        "ts": "2026-01-20T06:54:27+00:00",
        "lat": 36.90744500000000272166289505548775196075439453125,
        "lon": 26.66849500000000006139089236967265605926513671875,
        "sog": 13.199999999999999289457264239899814128875732421875,
        "zone_id": "discovered_075"
    },
    "next_seen": {
        "ts": "2026-01-20T12:01:38+00:00",
        "lat": 36.011899999999997135091689415276050567626953125,
        "lon": 27.354293299999998367866282933391630649566650390625,
        "zone_ids": [
            "discovered_072",
            "discovered_163"
        ]
    },
    "gap_enrichment": {
        "status": "done",
        "corridor": {
            "start": {
                "lat": 36.90744500000000272166289505548775196075439453125,
                "lon": 26.66849500000000006139089236967265605926513671875,
                "ts": "2026-01-20T06:54:27+00:00"
            },
            "end": {
                "lat": 36.011899999999997135091689415276050567626953125,
                "lon": 27.354293299999998367866282933391630649566650390625,
                "ts": "2026-01-20T12:01:38+00:00"
            },
            "bbox": {
                "min_lat": 35.83171999999999712827047915197908878326416015625,
                "min_lon": 26.444466999999999501369529752992093563079833984375,
                "max_lat": 37.0876250000000027284841053187847137451171875,
                "max_lon": 27.578320999999998974772097426466643810272216796875
            },
            "buffer_km": 20
        },
        "sar": {
            "status": "snapshot",
            "scene_id": "S1C_IW_GRDH_1SDV_20260120T041509_20260120T041534_005982_00C002_D9AA_COG",
            "scene_time": "2026-01-20T04:15:09.432317Z",
            "platform": "sentinel-1c",
            "assets": {
                "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/01\/event_8629_thumbnail_20260123004603.png",
                "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/01\/event_8629_thumbnail_20260123004603.png",
                "source": "copernicus_dataspace"
            },
            "notes": "SAR snapshot available for review"
        },
        "viirs": {
            "status": "signal",
            "dataset": "VIIRS_SNPP",
            "detection_count": 1,
            "top_detections": [
                {
                    "lat": 36.82070999999999827423380338586866855621337890625,
                    "lon": 27.084559999999999746478351880796253681182861328125,
                    "brightness": 325.69999999999998863131622783839702606201171875,
                    "frp": 1.850000000000000088817841970012523233890533447265625,
                    "confidence": "n",
                    "acq_date": "2026-01-20",
                    "acq_time": "1114",
                    "satellite": "N",
                    "daynight": "D",
                    "acq_datetime": "2026-01-20T11:14:00+00:00"
                }
            ],
            "notes": "1 thermal\/light anomalies detected"
        },
        "searched_at": "2026-01-23T00:45:59.640766+00:00"
    }
}
Methodology: 2026.01.18
Zone Dwell Southeast Aegean Monitoring Zone
Jan 20, 2026 05:50 UTC 80.0% ▼
  • Zone: Southeast Aegean Monitoring Zone
  • Duration: 1h 4m
  • Data Points: 47 AIS positions
  • Period: 2026-01-20T05:50:07+00:00 to 2026-01-20T06:54:27+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_075",
    "zone_name": "Southeast Aegean Monitoring Zone",
    "dwell_minutes": 64.2999999999999971578290569595992565155029296875,
    "points_in_zone": 47,
    "first_point": {
        "ts": "2026-01-20T05:50:07+00:00",
        "lat": 37.097638299999999844658304937183856964111328125,
        "lon": 26.591668299999998481553120655007660388946533203125
    },
    "last_point": {
        "ts": "2026-01-20T06:54:27+00:00",
        "lat": 36.90744500000000272166289505548775196075439453125,
        "lon": 26.66849500000000006139089236967265605926513671875
    }
}
Methodology: 2026.01.18

Recent Position Data

Time (UTC) Lat Lon Speed Course Zone
Jun 5 18:56 37.0030 26.6676 12.8 kn 178.0° Northeast Aegean Monitoring Zone
Jun 5 18:52 37.0155 26.6671 12.7 kn 178.0° Northeast Aegean Monitoring Zone
Jun 5 18:44 37.0432 26.6621 12.5 kn 150.0° Northeast Aegean Monitoring Zone
Jun 5 18:37 37.0611 26.6411 12.4 kn 132.0° Northeast Aegean Monitoring Zone
Jun 5 18:34 37.0679 26.6316 12.3 kn 133.0° Northeast Aegean Monitoring Zone
Jun 4 09:40 40.9429 28.9207 12.4 kn 238.0° Bosphorus/Dardanelles Approach
Jun 4 09:39 40.9448 28.9245 12.5 kn 237.0° Bosphorus/Dardanelles Approach
May 20 00:59 40.9297 28.9824 13.7 kn 0.0° Bosphorus/Dardanelles Approach
May 7 09:36 37.4678 25.8979 13.4 kn 338.0° Central Atlantic Surveillance Zone
May 7 09:21 37.4196 25.9240 13.1 kn 335.0° Central Atlantic Surveillance Zone
May 7 09:19 37.4130 25.9279 13.1 kn 334.0° Central Atlantic Surveillance Zone
May 7 09:07 37.3743 25.9548 13.4 kn 329.0° Central Atlantic Surveillance Zone
May 7 09:02 37.3560 25.9687 13.4 kn 328.0° Central Atlantic Surveillance Zone
May 7 08:50 37.3177 25.9967 13.6 kn 331.0° Central Atlantic Surveillance Zone
May 7 08:45 37.3013 26.0074 13.5 kn 333.0° Central Atlantic Surveillance Zone
May 7 08:42 37.2915 26.0134 13.4 kn 334.0° Central Atlantic Surveillance Zone
May 7 08:33 37.2631 26.0315 13.4 kn 332.0° Central Atlantic Surveillance Zone
May 7 07:56 37.1391 26.1062 13.7 kn 334.0° discovered_086
May 7 07:53 37.1287 26.1124 13.7 kn 335.0° discovered_086
May 7 07:51 37.1202 26.1177 13.7 kn 334.0° discovered_086

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.