Vessel information
Detected Events (46)
- Zone: Strait of Gibraltar Surveillance Zone
- Duration: 1h 53m
- Data Points: 26 AIS positions
- Period: 2026-07-31T21:02:51+00:00 to 2026-07-31T22:55:52+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"dwell_minutes": 113,
"points_in_zone": 26,
"first_point": {
"ts": "2026-07-31T21:02:51+00:00",
"lat": 35.01213169999999763604137115180492401123046875,
"lon": 129.05374000000000478394213132560253143310546875
},
"last_point": {
"ts": "2026-07-31T22:55:52+00:00",
"lat": 35.0095232999999979028871166519820690155029296875,
"lon": 129.06477000000000998625182546675205230712890625
}
}- Duration: 1h 53m
- Radius: 1,027 meters
- Data Points: 26 AIS positions
- Centroid: 35.0080, 129.0638
- Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 1027.09999999999990905052982270717620849609375,
"duration_minutes": 113,
"points": 26,
"centroid": {
"lat": 35.00803795384614858221539179794490337371826171875,
"lon": 129.063832561538475829365779645740985870361328125
},
"bbox": {
"min_lat": 35.00516669999999663787093595601618289947509765625,
"min_lon": 129.05374000000000478394213132560253143310546875,
"max_lat": 35.01213169999999763604137115180492401123046875,
"max_lon": 129.06695669999999154242686927318572998046875
},
"zone_id": "discovered_001"
}- Duration: 2h 9m
- Radius: 967 meters
- Data Points: 30 AIS positions
- Centroid: 35.0089, 129.0636
- Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 966.799999999999954525264911353588104248046875,
"duration_minutes": 129.69999999999998863131622783839702606201171875,
"points": 30,
"centroid": {
"lat": 35.00886450333333499429500079713761806488037109375,
"lon": 129.06355983333338599550188519060611724853515625
},
"bbox": {
"min_lat": 35.00516669999999663787093595601618289947509765625,
"min_lon": 129.05374000000000478394213132560253143310546875,
"max_lat": 35.01613669999999700621629017405211925506591796875,
"max_lon": 129.06882830000000694781192578375339508056640625
},
"zone_id": "discovered_001"
}- Zone: Strait of Gibraltar Surveillance Zone
- Duration: 2h 25m
- Data Points: 34 AIS positions
- Period: 2026-07-31T20:30:11+00:00 to 2026-07-31T22:55:52+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"dwell_minutes": 145.69999999999998863131622783839702606201171875,
"points_in_zone": 34,
"first_point": {
"ts": "2026-07-31T20:30:11+00:00",
"lat": 35.030214999999998326529748737812042236328125,
"lon": 129.0819083000000091487891040742397308349609375
},
"last_point": {
"ts": "2026-07-31T22:55:52+00:00",
"lat": 35.0095232999999979028871166519820690155029296875,
"lon": 129.06477000000000998625182546675205230712890625
}
}- Gap Duration: 4h 18m
- Last Seen: 2026-07-31T00:31:56+00:00 at 35.2853, 129.3312 (Zone: Gulf of Cádiz Sanctions Monitoring Zone)
- Next Seen: 2026-07-31T04:50:39+00:00 at 35.2805, 129.3222
🛰️ Gap Corroboration
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
Show Raw Evidence JSON
{
"gap_minutes": 258.69999999999998863131622783839702606201171875,
"last_seen": {
"ts": "2026-07-31T00:31:56+00:00",
"lat": 35.2852517000000034386175684630870819091796875,
"lon": 129.331191700000005084802978672087192535400390625,
"sog": 10.5,
"zone_id": "discovered_002"
},
"next_seen": {
"ts": "2026-07-31T04:50:39+00:00",
"lat": 35.28050669999999655601641279645264148712158203125,
"lon": 129.322206700000009504947229288518428802490234375,
"zone_ids": [
"discovered_002"
]
},
"gap_enrichment": {
"status": "not_found",
"corridor": {
"start": {
"lat": 35.2852517000000034386175684630870819091796875,
"lon": 129.331191700000005084802978672087192535400390625,
"ts": "2026-07-31T00:31:56+00:00"
},
"end": {
"lat": 35.28050669999999655601641279645264148712158203125,
"lon": 129.322206700000009504947229288518428802490234375,
"ts": "2026-07-31T04:50:39+00:00"
},
"bbox": {
"min_lat": 35.10032700000000005502442945726215839385986328125,
"min_lon": 129.101482000000004290996002964675426483154296875,
"max_lat": 35.46543199999999984584064804948866367340087890625,
"max_lon": 129.551917000000003099557943642139434814453125
},
"buffer_km": 20
},
"sar": {
"status": "not_found",
"notes": "No Sentinel-1 scenes covering corridor and time window"
},
"viirs": {
"status": "not_found",
"notes": "No VIIRS thermal\/light detections in corridor"
},
"searched_at": "2026-07-31T05:15:05.471695+00:00"
}
}- Zone: Gulf of Cádiz Sanctions Monitoring Zone
- Duration: 5h 28m
- Data Points: 19 AIS positions
- Period: 2026-07-31T00:02:16+00:00 to 2026-07-31T05:30:59+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_002",
"zone_name": "Archipelago Sea Sanction Zone",
"dwell_minutes": 328.69999999999998863131622783839702606201171875,
"points_in_zone": 19,
"first_point": {
"ts": "2026-07-31T00:02:16+00:00",
"lat": 35.2030383000000028914655558764934539794921875,
"lon": 129.2712467000000060579623095691204071044921875
},
"last_point": {
"ts": "2026-07-31T05:30:59+00:00",
"lat": 35.1991799999999983583620632998645305633544921875,
"lon": 129.2560882999999876119545660912990570068359375
}
}- Zone: Gulf of Cádiz Sanctions Monitoring Zone
- Duration: 5h 40m
- Data Points: 22 AIS positions
- Period: 2026-07-30T23:50:57+00:00 to 2026-07-31T05:30:59+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_002",
"zone_name": "Archipelago Sea Sanction Zone",
"dwell_minutes": 340,
"points_in_zone": 22,
"first_point": {
"ts": "2026-07-30T23:50:57+00:00",
"lat": 35.1704433000000022957465262152254581451416015625,
"lon": 129.245803300000005719994078390300273895263671875
},
"last_point": {
"ts": "2026-07-31T05:30:59+00:00",
"lat": 35.1991799999999983583620632998645305633544921875,
"lon": 129.2560882999999876119545660912990570068359375
}
}- Zone: Gulf of Cádiz Sanctions Monitoring Zone
- Duration: 1h 3m
- Data Points: 16 AIS positions
- Period: 2026-07-30T04:00:38+00:00 to 2026-07-30T05:03:38+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_002",
"zone_name": "Archipelago Sea Sanction Zone",
"dwell_minutes": 63,
"points_in_zone": 16,
"first_point": {
"ts": "2026-07-30T04:00:38+00:00",
"lat": 35.27195999999999997953636921010911464691162109375,
"lon": 129.327706699999993134042597375810146331787109375
},
"last_point": {
"ts": "2026-07-30T05:03:38+00:00",
"lat": 35.18148000000000052978066378273069858551025390625,
"lon": 129.24947670000000243817339651286602020263671875
}
}- Zone: Gulf of Cádiz Sanctions Monitoring Zone
- Duration: 1h 19m
- Data Points: 18 AIS positions
- Period: 2026-07-30T03:44:18+00:00 to 2026-07-30T05:03:38+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_002",
"zone_name": "Archipelago Sea Sanction Zone",
"dwell_minutes": 79.2999999999999971578290569595992565155029296875,
"points_in_zone": 18,
"first_point": {
"ts": "2026-07-30T03:44:18+00:00",
"lat": 35.2946917000000013331373338587582111358642578125,
"lon": 129.343306699999999409556039609014987945556640625
},
"last_point": {
"ts": "2026-07-30T05:03:38+00:00",
"lat": 35.18148000000000052978066378273069858551025390625,
"lon": 129.24947670000000243817339651286602020263671875
}
}- Gap Duration: 6h 25m
- Last Seen: 2026-07-29T21:18:35+00:00 at 35.2969, 129.3491 (Zone: Gulf of Cádiz Sanctions Monitoring Zone)
- Next Seen: 2026-07-30T03:44:18+00:00 at 35.2947, 129.3433
🛰️ Gap Corroboration
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
Show Raw Evidence JSON
{
"gap_minutes": 385.69999999999998863131622783839702606201171875,
"last_seen": {
"ts": "2026-07-29T21:18:35+00:00",
"lat": 35.29688329999999751862560515291988849639892578125,
"lon": 129.349148299999995970210875384509563446044921875,
"sog": 10,
"zone_id": "discovered_002"
},
"next_seen": {
"ts": "2026-07-30T03:44:18+00:00",
"lat": 35.2946917000000013331373338587582111358642578125,
"lon": 129.343306699999999409556039609014987945556640625,
"zone_ids": [
"discovered_002"
]
},
"gap_enrichment": {
"status": "not_found",
"corridor": {
"start": {
"lat": 35.29688329999999751862560515291988849639892578125,
"lon": 129.349148299999995970210875384509563446044921875,
"ts": "2026-07-29T21:18:35+00:00"
},
"end": {
"lat": 35.2946917000000013331373338587582111358642578125,
"lon": 129.343306699999999409556039609014987945556640625,
"ts": "2026-07-30T03:44:18+00:00"
},
"bbox": {
"min_lat": 35.11451199999999772671799291856586933135986328125,
"min_lon": 129.12254599999999982173903845250606536865234375,
"max_lat": 35.4770630000000011250449460931122303009033203125,
"max_lon": 129.56990899999999555802787654101848602294921875
},
"buffer_km": 20
},
"sar": {
"status": "not_found",
"notes": "No Sentinel-1 scenes covering corridor and time window"
},
"viirs": {
"status": "not_found",
"notes": "No VIIRS thermal\/light detections in corridor"
},
"searched_at": "2026-07-30T04:00:01.964689+00:00"
}
}- Zone: Gulf of Cádiz Sanctions Monitoring Zone
- Duration: 6h 25m
- Data Points: 2 AIS positions
- Period: 2026-07-29T21:18:35+00:00 to 2026-07-30T03:44:18+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_002",
"zone_name": "Archipelago Sea Sanction Zone",
"dwell_minutes": 385.69999999999998863131622783839702606201171875,
"points_in_zone": 2,
"first_point": {
"ts": "2026-07-29T21:18:35+00:00",
"lat": 35.29688329999999751862560515291988849639892578125,
"lon": 129.349148299999995970210875384509563446044921875
},
"last_point": {
"ts": "2026-07-30T03:44:18+00:00",
"lat": 35.2946917000000013331373338587582111358642578125,
"lon": 129.343306699999999409556039609014987945556640625
}
}- Zone: Gulf of Cádiz Sanctions Monitoring Zone
- Duration: 1h 3m
- Data Points: 17 AIS positions
- Period: 2026-07-29T20:15:14+00:00 to 2026-07-29T21:18:35+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_002",
"zone_name": "Archipelago Sea Sanction Zone",
"dwell_minutes": 63.39999999999999857891452847979962825775146484375,
"points_in_zone": 17,
"first_point": {
"ts": "2026-07-29T20:15:14+00:00",
"lat": 35.17162499999999880628820392303168773651123046875,
"lon": 129.248303300000003446257323957979679107666015625
},
"last_point": {
"ts": "2026-07-29T21:18:35+00:00",
"lat": 35.29688329999999751862560515291988849639892578125,
"lon": 129.349148299999995970210875384509563446044921875
}
}- Zone: Strait of Gibraltar Surveillance Zone
- Duration: 1h 35m
- Data Points: 22 AIS positions
- Period: 2026-07-29T09:00:30+00:00 to 2026-07-29T10:35:32+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"dwell_minutes": 95,
"points_in_zone": 22,
"first_point": {
"ts": "2026-07-29T09:00:30+00:00",
"lat": 35.02039500000000060708771343342959880828857421875,
"lon": 129.017211699999990059950505383312702178955078125
},
"last_point": {
"ts": "2026-07-29T10:35:32+00:00",
"lat": 34.9842833000000013043973012827336788177490234375,
"lon": 128.843963300000012850432540290057659149169921875
}
}- Zone: Strait of Gibraltar Surveillance Zone
- Duration: 1h 47m
- Data Points: 25 AIS positions
- Period: 2026-07-29T08:47:40+00:00 to 2026-07-29T10:35:32+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"dwell_minutes": 107.900000000000005684341886080801486968994140625,
"points_in_zone": 25,
"first_point": {
"ts": "2026-07-29T08:47:40+00:00",
"lat": 35.029865000000000918589648790657520294189453125,
"lon": 129.05410499999999274223227985203266143798828125
},
"last_point": {
"ts": "2026-07-29T10:35:32+00:00",
"lat": 34.9842833000000013043973012827336788177490234375,
"lon": 128.843963300000012850432540290057659149169921875
}
}- Minimum Distance: 36 meters
- Average Distance: 63 meters
- Duration: 39 minutes
- Period: 2026-07-25T21:31:19+00:00 to 2026-07-25T22:10:21+00:00
- Vessel A Avg Speed: 0.3 knots
- Vessel B Avg Speed: 0.2 knots
- Zone: Strait of Gibraltar Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (TAHITI and KUKDONG3HO) maintained close proximity (min 36m, avg 63m) for 39 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 36m, avg 63m |
| Duration | 5/25 | Duration 39 minutes |
| Speed Stability | 17/20 | both nearly stationary; stable speeds |
| Distance Consistency | 15/15 | Distance variance ±28m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Strait of Gibraltar Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 440115430,
"name": "TAHITI",
"flag": "REPUBLIC OF KOREA"
},
"vessel_b": {
"mmsi": 440112380,
"name": "KUKDONG3HO",
"flag": "REPUBLIC OF KOREA"
},
"min_distance_m": 36,
"avg_distance_m": 62.7000000000000028421709430404007434844970703125,
"distance_consistency_m": 27.60000000000000142108547152020037174224853515625,
"duration_minutes": 39,
"overlap_duration_s": 2342,
"speed_a_avg": 0.330000000000000015543122344752191565930843353271484375,
"speed_a_std": 0.450000000000000011102230246251565404236316680908203125,
"speed_b_avg": 0.2300000000000000099920072216264088638126850128173828125,
"speed_b_std": 0.11000000000000000055511151231257827021181583404541015625,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.330000000000000015543122344752191565930843353271484375,
"max_sog": 1.5
},
"vessel_b": {
"avg_sog": 0.2300000000000000099920072216264088638126850128173828125,
"max_sog": 0.40000000000000002220446049250313080847263336181640625
}
},
"time_window": {
"start": "2026-07-25T21:31:19+00:00",
"end": "2026-07-25T22:10:21+00:00"
},
"points_count": {
"vessel_a": 9,
"vessel_b": 9
},
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"score": {
"value": 72,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 36m, avg 63m"
},
"duration": {
"score": 5,
"max": 25,
"detail": "Duration 39 minutes"
},
"speed_stability": {
"score": 17,
"max": 20,
"detail": "both nearly stationary; stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b128m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (TAHITI and KUKDONG3HO) maintained close proximity (min 36m, avg 63m) for 39 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
}
}- Zone: Strait of Gibraltar Surveillance Zone
- Duration: 1h 10m
- Data Points: 20 AIS positions
- Period: 2026-07-25T21:01:32+00:00 to 2026-07-25T22:12:12+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"dwell_minutes": 70.7000000000000028421709430404007434844970703125,
"points_in_zone": 20,
"first_point": {
"ts": "2026-07-25T21:01:32+00:00",
"lat": 35.009486699999996517362887971103191375732421875,
"lon": 129.063881699999996044425643049180507659912109375
},
"last_point": {
"ts": "2026-07-25T22:12:12+00:00",
"lat": 35.029996699999998099883669055998325347900390625,
"lon": 129.0813233000000082029146142303943634033203125
}
}- Zone: Strait of Gibraltar Surveillance Zone
- Duration: 2h 11m
- Data Points: 36 AIS positions
- Period: 2026-07-25T20:01:10+00:00 to 2026-07-25T22:12:12+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"dwell_minutes": 131,
"points_in_zone": 36,
"first_point": {
"ts": "2026-07-25T20:01:10+00:00",
"lat": 35.00961000000000211684891837649047374725341796875,
"lon": 129.0636266999999861582182347774505615234375
},
"last_point": {
"ts": "2026-07-25T22:12:12+00:00",
"lat": 35.029996699999998099883669055998325347900390625,
"lon": 129.0813233000000082029146142303943634033203125
}
}- Duration: 2h 5m
- Radius: 921 meters
- Data Points: 35 AIS positions
- Centroid: 35.0097, 129.0644
- Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 920.8999999999999772626324556767940521240234375,
"duration_minutes": 125.900000000000005684341886080801486968994140625,
"points": 35,
"centroid": {
"lat": 35.0096654714285620002556242980062961578369140625,
"lon": 129.064442439999993439414538443088531494140625
},
"bbox": {
"min_lat": 35.0091766999999975951141095720231533050537109375,
"min_lon": 129.0636266999999861582182347774505615234375,
"max_lat": 35.01628670000000198569978238083422183990478515625,
"max_lon": 129.070526699999987840783433057367801666259765625
},
"zone_id": "discovered_001"
}- Zone: Strait of Gibraltar Surveillance Zone
- Duration: 3h 11m
- Data Points: 46 AIS positions
- Period: 2026-07-25T19:01:00+00:00 to 2026-07-25T22:12:12+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"dwell_minutes": 191.19999999999998863131622783839702606201171875,
"points_in_zone": 46,
"first_point": {
"ts": "2026-07-25T19:01:00+00:00",
"lat": 35.009313300000002300293999724090099334716796875,
"lon": 129.063860000000005356923793442547321319580078125
},
"last_point": {
"ts": "2026-07-25T22:12:12+00:00",
"lat": 35.029996699999998099883669055998325347900390625,
"lon": 129.0813233000000082029146142303943634033203125
}
}- Duration: 3h 6m
- Radius: 934 meters
- Data Points: 45 AIS positions
- Centroid: 35.0096, 129.0643
- Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 934,
"duration_minutes": 186.099999999999994315658113919198513031005859375,
"points": 45,
"centroid": {
"lat": 35.00962410666664936798042617738246917724609375,
"lon": 129.064271900000022696985979564487934112548828125
},
"bbox": {
"min_lat": 35.0091766999999975951141095720231533050537109375,
"min_lon": 129.0635383000000047104549594223499298095703125,
"max_lat": 35.01628670000000198569978238083422183990478515625,
"max_lon": 129.070526699999987840783433057367801666259765625
},
"zone_id": "discovered_001"
}- Duration: 3h 46m
- Radius: 938 meters
- Data Points: 53 AIS positions
- Centroid: 35.0096, 129.0642
- Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 937.8999999999999772626324556767940521240234375,
"duration_minutes": 226.099999999999994315658113919198513031005859375,
"points": 53,
"centroid": {
"lat": 35.00960729056601650199809228070080280303955078125,
"lon": 129.06422834339622340849018655717372894287109375
},
"bbox": {
"min_lat": 35.00759169999999897981979302130639553070068359375,
"min_lon": 129.062905000000000654836185276508331298828125,
"max_lat": 35.01628670000000198569978238083422183990478515625,
"max_lon": 129.070526699999987840783433057367801666259765625
},
"zone_id": "discovered_001"
}- Zone: Strait of Gibraltar Surveillance Zone
- Duration: 3h 58m
- Data Points: 57 AIS positions
- Period: 2026-07-25T18:13:19+00:00 to 2026-07-25T22:12:12+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"dwell_minutes": 238.900000000000005684341886080801486968994140625,
"points_in_zone": 57,
"first_point": {
"ts": "2026-07-25T18:13:19+00:00",
"lat": 35.02719499999999896999725024215877056121826171875,
"lon": 129.0793433000000050014932639896869659423828125
},
"last_point": {
"ts": "2026-07-25T22:12:12+00:00",
"lat": 35.029996699999998099883669055998325347900390625,
"lon": 129.0813233000000082029146142303943634033203125
}
}- Zone: Strait of Gibraltar Surveillance Zone
- Duration: 1h 4m
- Data Points: 30 AIS positions
- Period: 2026-07-22T21:32:24+00:00 to 2026-07-22T22:36:44+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"dwell_minutes": 64.2999999999999971578290569595992565155029296875,
"points_in_zone": 30,
"first_point": {
"ts": "2026-07-22T21:32:24+00:00",
"lat": 35.03020670000000080790414358489215373992919921875,
"lon": 129.054941700000000537329469807446002960205078125
},
"last_point": {
"ts": "2026-07-22T22:36:44+00:00",
"lat": 34.986168300000002773231244646012783050537109375,
"lon": 128.859016700000012178861652500927448272705078125
}
}- Zone: Gulf of Cádiz Sanctions Monitoring Zone
- Duration: 1h 5m
- Data Points: 35 AIS positions
- Period: 2026-07-22T07:22:18+00:00 to 2026-07-22T08:27:19+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_002",
"zone_name": "Archipelago Sea Sanction Zone",
"dwell_minutes": 65,
"points_in_zone": 35,
"first_point": {
"ts": "2026-07-22T07:22:18+00:00",
"lat": 35.306528299999996534097590483725070953369140625,
"lon": 129.346215000000000827640178613364696502685546875
},
"last_point": {
"ts": "2026-07-22T08:27:19+00:00",
"lat": 35.1843649999999996680344338528811931610107421875,
"lon": 129.245463300000011486190487630665302276611328125
}
}- Minimum Distance: 6 meters
- Average Distance: 14 meters
- Duration: 34 minutes
- Period: 2026-07-16T02:03:47+00:00 to 2026-07-16T02:38:17+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.7 knots
- Zone: Strait of Gibraltar Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (BUKWANG and KUKDONG3HO) maintained close proximity (min 6m, avg 14m) for 34 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.7 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 6m, avg 14m |
| Duration | 5/25 | Duration 34 minutes |
| Speed Stability | 12/20 | both very slow; somewhat variable speeds |
| Distance Consistency | 15/15 | Distance variance ±6m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Strait of Gibraltar Surveillance Zone |
🛰️ Satellite Corroboration
No satellite imagery for this time/location
No Sentinel-1 scenes covering AOI and time window
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 440191310,
"imo": 9181352,
"name": "BUKWANG",
"flag": "REPUBLIC OF KOREA"
},
"vessel_b": {
"mmsi": 440112380,
"name": "KUKDONG3HO",
"flag": "REPUBLIC OF KOREA"
},
"min_distance_m": 6.4000000000000003552713678800500929355621337890625,
"avg_distance_m": 14.199999999999999289457264239899814128875732421875,
"distance_consistency_m": 6,
"duration_minutes": 34.5,
"overlap_duration_s": 2070,
"speed_a_avg": 0.13000000000000000444089209850062616169452667236328125,
"speed_a_std": 0.1499999999999999944488848768742172978818416595458984375,
"speed_b_avg": 0.70999999999999996447286321199499070644378662109375,
"speed_b_std": 0.58999999999999996891375531049561686813831329345703125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.13000000000000000444089209850062616169452667236328125,
"max_sog": 0.5
},
"vessel_b": {
"avg_sog": 0.70999999999999996447286321199499070644378662109375,
"max_sog": 1.5
}
},
"time_window": {
"start": "2026-07-16T02:03:47+00:00",
"end": "2026-07-16T02:38:17+00:00"
},
"points_count": {
"vessel_a": 12,
"vessel_b": 12
},
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"score": {
"value": 67,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 6m, avg 14m"
},
"duration": {
"score": 5,
"max": 25,
"detail": "Duration 34 minutes"
},
"speed_stability": {
"score": 12,
"max": 20,
"detail": "both very slow; somewhat variable 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: Strait of Gibraltar Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (BUKWANG and KUKDONG3HO) maintained close proximity (min 6m, avg 14m) for 34 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.7 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 35.029514100000000098589225672185420989990234375,
"lon": 129.07296400000001312946551479399204254150390625
},
"time_window": {
"start_ts": "2026-07-16T02:03:47+00:00",
"end_ts": "2026-07-16T02:38:17+00:00"
},
"searched_at": "2026-07-16T08:45:07.360809+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 54 meters
- Average Distance: 60 meters
- Duration: 30 minutes
- Period: 2026-07-16T02:01:33+00:00 to 2026-07-16T02:31:53+00:00
- Vessel A Avg Speed: 0.4 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Strait of Gibraltar Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (KUKDONG3HO and SUNGJIN ACE) maintained close proximity (min 54m, avg 60m) for 30 minutes. Both vessels were slow-moving (avg speeds 0.4 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 54m, avg 60m |
| Duration | 5/25 | Duration 30 minutes |
| Speed Stability | 17/20 | both nearly stationary; stable speeds |
| Distance Consistency | 15/15 | Distance variance ±5m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Strait of Gibraltar Surveillance Zone |
🛰️ Satellite Corroboration
No satellite imagery for this time/location
No Sentinel-1 scenes covering AOI and time window
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 440112380,
"name": "KUKDONG3HO",
"flag": "REPUBLIC OF KOREA"
},
"vessel_b": {
"mmsi": 440156960,
"name": "SUNGJIN ACE",
"flag": "REPUBLIC OF KOREA"
},
"min_distance_m": 54.10000000000000142108547152020037174224853515625,
"avg_distance_m": 60.10000000000000142108547152020037174224853515625,
"distance_consistency_m": 4.5999999999999996447286321199499070644378662109375,
"duration_minutes": 30.300000000000000710542735760100185871124267578125,
"overlap_duration_s": 1820,
"speed_a_avg": 0.440000000000000002220446049250313080847263336181640625,
"speed_a_std": 0.450000000000000011102230246251565404236316680908203125,
"speed_b_avg": 0.11999999999999999555910790149937383830547332763671875,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.440000000000000002220446049250313080847263336181640625,
"max_sog": 1.5
},
"vessel_b": {
"avg_sog": 0.11999999999999999555910790149937383830547332763671875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-07-16T02:01:33+00:00",
"end": "2026-07-16T02:31:53+00:00"
},
"points_count": {
"vessel_a": 8,
"vessel_b": 8
},
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"score": {
"value": 72,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 54m, avg 60m"
},
"duration": {
"score": 5,
"max": 25,
"detail": "Duration 30 minutes"
},
"speed_stability": {
"score": 17,
"max": 20,
"detail": "both nearly stationary; 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: Strait of Gibraltar Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (KUKDONG3HO and SUNGJIN ACE) maintained close proximity (min 54m, avg 60m) for 30 minutes. Both vessels were slow-moving (avg speeds 0.4 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 35.02952959999999649198798579163849353790283203125,
"lon": 129.07322149999998828207026235759258270263671875
},
"time_window": {
"start_ts": "2026-07-16T02:01:33+00:00",
"end_ts": "2026-07-16T02:31:53+00:00"
},
"searched_at": "2026-07-16T08:45:12.149112+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 55 meters
- Average Distance: 66 meters
- Duration: 1h 11m
- Period: 2026-07-16T01:27:48+00:00 to 2026-07-16T02:39:29+00:00
- Vessel A Avg Speed: 0.4 knots
- Vessel B Avg Speed: 0.5 knots
- Zone: Strait of Gibraltar Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SUNGJIN ACE and KUKDONG3HO) maintained close proximity (min 55m, avg 66m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.4 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 55m, avg 66m |
| Duration | 15/25 | Duration 72 minutes |
| Speed Stability | 14/20 | both nearly stationary; somewhat variable speeds |
| Distance Consistency | 15/15 | Distance variance ±14m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Strait of Gibraltar Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 440156960,
"name": "SUNGJIN ACE",
"flag": "REPUBLIC OF KOREA"
},
"vessel_b": {
"mmsi": 440112380,
"name": "KUKDONG3HO",
"flag": "REPUBLIC OF KOREA"
},
"min_distance_m": 55.10000000000000142108547152020037174224853515625,
"avg_distance_m": 65.7000000000000028421709430404007434844970703125,
"distance_consistency_m": 14.5,
"duration_minutes": 71.7000000000000028421709430404007434844970703125,
"overlap_duration_s": 4301,
"speed_a_avg": 0.38000000000000000444089209850062616169452667236328125,
"speed_a_std": 0.5300000000000000266453525910037569701671600341796875,
"speed_b_avg": 0.4899999999999999911182158029987476766109466552734375,
"speed_b_std": 0.479999999999999982236431605997495353221893310546875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.38000000000000000444089209850062616169452667236328125,
"max_sog": 1.899999999999999911182158029987476766109466552734375
},
"vessel_b": {
"avg_sog": 0.4899999999999999911182158029987476766109466552734375,
"max_sog": 1.5
}
},
"time_window": {
"start": "2026-07-16T01:27:48+00:00",
"end": "2026-07-16T02:39:29+00:00"
},
"points_count": {
"vessel_a": 18,
"vessel_b": 18
},
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"score": {
"value": 79,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 55m, avg 66m"
},
"duration": {
"score": 15,
"max": 25,
"detail": "Duration 72 minutes"
},
"speed_stability": {
"score": 14,
"max": 20,
"detail": "both nearly stationary; somewhat variable 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: Strait of Gibraltar Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SUNGJIN ACE and KUKDONG3HO) maintained close proximity (min 55m, avg 66m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.4 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
}
}- Minimum Distance: 6 meters
- Average Distance: 13 meters
- Duration: 1h 30m
- Period: 2026-07-16T01:07:37+00:00 to 2026-07-16T02:38:17+00:00
- Vessel A Avg Speed: 0.2 knots
- Vessel B Avg Speed: 0.5 knots
- Zone: Strait of Gibraltar Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (BUKWANG and KUKDONG3HO) maintained close proximity (min 6m, avg 13m) for 91 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 6m, avg 13m |
| Duration | 20/25 | Duration 91 minutes |
| Speed Stability | 17/20 | both nearly stationary; stable speeds |
| Distance Consistency | 15/15 | Distance variance ±5m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Strait of Gibraltar Surveillance Zone |
🛰️ Satellite Corroboration
No satellite imagery for this time/location
No Sentinel-1 scenes covering AOI and time window
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 440191310,
"imo": 9181352,
"name": "BUKWANG",
"flag": "REPUBLIC OF KOREA"
},
"vessel_b": {
"mmsi": 440112380,
"name": "KUKDONG3HO",
"flag": "REPUBLIC OF KOREA"
},
"min_distance_m": 6.4000000000000003552713678800500929355621337890625,
"avg_distance_m": 13.4000000000000003552713678800500929355621337890625,
"distance_consistency_m": 4.5999999999999996447286321199499070644378662109375,
"duration_minutes": 90.7000000000000028421709430404007434844970703125,
"overlap_duration_s": 5440,
"speed_a_avg": 0.1499999999999999944488848768742172978818416595458984375,
"speed_a_std": 0.1499999999999999944488848768742172978818416595458984375,
"speed_b_avg": 0.450000000000000011102230246251565404236316680908203125,
"speed_b_std": 0.479999999999999982236431605997495353221893310546875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.1499999999999999944488848768742172978818416595458984375,
"max_sog": 0.5
},
"vessel_b": {
"avg_sog": 0.450000000000000011102230246251565404236316680908203125,
"max_sog": 1.5
}
},
"time_window": {
"start": "2026-07-16T01:07:37+00:00",
"end": "2026-07-16T02:38:17+00:00"
},
"points_count": {
"vessel_a": 28,
"vessel_b": 28
},
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"score": {
"value": 87,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 6m, avg 13m"
},
"duration": {
"score": 20,
"max": 25,
"detail": "Duration 91 minutes"
},
"speed_stability": {
"score": 17,
"max": 20,
"detail": "both nearly stationary; stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b15m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (BUKWANG and KUKDONG3HO) maintained close proximity (min 6m, avg 13m) for 91 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 35.0295966999999990321157383732497692108154296875,
"lon": 129.07278700000000526415533386170864105224609375
},
"time_window": {
"start_ts": "2026-07-16T01:07:37+00:00",
"end_ts": "2026-07-16T02:38:17+00:00"
},
"searched_at": "2026-07-16T07:45:11.339797+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 43 meters
- Average Distance: 55 meters
- Duration: 39 minutes
- Period: 2026-07-16T01:07:05+00:00 to 2026-07-16T01:46:52+00:00
- Vessel A Avg Speed: 0.5 knots
- Vessel B Avg Speed: 0.3 knots
- Zone: Strait of Gibraltar Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (JINSUNG and KUKDONG3HO) maintained close proximity (min 43m, avg 55m) for 40 minutes. Both vessels were slow-moving (avg speeds 0.5 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 43m, avg 55m |
| Duration | 5/25 | Duration 40 minutes |
| Speed Stability | 15/20 | both very slow; stable speeds |
| Distance Consistency | 15/15 | Distance variance ±6m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Strait of Gibraltar Surveillance Zone |
🛰️ Satellite Corroboration
No satellite imagery for this time/location
No Sentinel-1 scenes covering AOI and time window
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 440192560,
"name": "JINSUNG",
"flag": "REPUBLIC OF KOREA"
},
"vessel_b": {
"mmsi": 440112380,
"name": "KUKDONG3HO",
"flag": "REPUBLIC OF KOREA"
},
"min_distance_m": 42.89999999999999857891452847979962825775146484375,
"avg_distance_m": 55.2000000000000028421709430404007434844970703125,
"distance_consistency_m": 6,
"duration_minutes": 39.7999999999999971578290569595992565155029296875,
"overlap_duration_s": 2387,
"speed_a_avg": 0.5100000000000000088817841970012523233890533447265625,
"speed_a_std": 0.330000000000000015543122344752191565930843353271484375,
"speed_b_avg": 0.2800000000000000266453525910037569701671600341796875,
"speed_b_std": 0.190000000000000002220446049250313080847263336181640625,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.5100000000000000088817841970012523233890533447265625,
"max_sog": 1.100000000000000088817841970012523233890533447265625
},
"vessel_b": {
"avg_sog": 0.2800000000000000266453525910037569701671600341796875,
"max_sog": 0.59999999999999997779553950749686919152736663818359375
}
},
"time_window": {
"start": "2026-07-16T01:07:05+00:00",
"end": "2026-07-16T01:46:52+00:00"
},
"points_count": {
"vessel_a": 10,
"vessel_b": 10
},
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"score": {
"value": 70,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 43m, avg 55m"
},
"duration": {
"score": 5,
"max": 25,
"detail": "Duration 40 minutes"
},
"speed_stability": {
"score": 15,
"max": 20,
"detail": "both very slow; 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: Strait of Gibraltar Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (JINSUNG and KUKDONG3HO) maintained close proximity (min 43m, avg 55m) for 40 minutes. Both vessels were slow-moving (avg speeds 0.5 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 35.02953480000000041627572500146925449371337890625,
"lon": 129.072809400000011237352737225592136383056640625
},
"time_window": {
"start_ts": "2026-07-16T01:07:05+00:00",
"end_ts": "2026-07-16T01:46:52+00:00"
},
"searched_at": "2026-07-16T07:45:08.950745+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Strait of Gibraltar Surveillance Zone
- Duration: 1h 25m
- Data Points: 21 AIS positions
- Period: 2026-07-16T01:06:13+00:00 to 2026-07-16T02:31:53+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"dwell_minutes": 85.7000000000000028421709430404007434844970703125,
"points_in_zone": 21,
"first_point": {
"ts": "2026-07-16T01:06:13+00:00",
"lat": 35.02976170000000166737663676030933856964111328125,
"lon": 129.07225329999999985375325195491313934326171875
},
"last_point": {
"ts": "2026-07-16T02:31:53+00:00",
"lat": 35.02951329999999785513864480890333652496337890625,
"lon": 129.07302329999998846687958575785160064697265625
}
}- Minimum Distance: 4 meters
- Average Distance: 13 meters
- Duration: 2h 33m
- Period: 2026-07-16T00:05:06+00:00 to 2026-07-16T02:38:17+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.4 knots
- Zone: Strait of Gibraltar Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (BUKWANG and KUKDONG3HO) maintained close proximity (min 4m, avg 13m) for 153 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.4 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 4m, avg 13m |
| Duration | 25/25 | Duration 153 minutes |
| Speed Stability | 17/20 | both nearly stationary; stable speeds |
| Distance Consistency | 15/15 | Distance variance ±5m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Strait of Gibraltar Surveillance Zone |
🛰️ Satellite Corroboration
No satellite imagery for this time/location
No Sentinel-1 scenes covering AOI and time window
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 440191310,
"imo": 9181352,
"name": "BUKWANG",
"flag": "REPUBLIC OF KOREA"
},
"vessel_b": {
"mmsi": 440112380,
"name": "KUKDONG3HO",
"flag": "REPUBLIC OF KOREA"
},
"min_distance_m": 3.5,
"avg_distance_m": 13.300000000000000710542735760100185871124267578125,
"distance_consistency_m": 5.0999999999999996447286321199499070644378662109375,
"duration_minutes": 153.19999999999998863131622783839702606201171875,
"overlap_duration_s": 9191,
"speed_a_avg": 0.14000000000000001332267629550187848508358001708984375,
"speed_a_std": 0.14000000000000001332267629550187848508358001708984375,
"speed_b_avg": 0.38000000000000000444089209850062616169452667236328125,
"speed_b_std": 0.409999999999999975575093458246556110680103302001953125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.14000000000000001332267629550187848508358001708984375,
"max_sog": 0.5
},
"vessel_b": {
"avg_sog": 0.38000000000000000444089209850062616169452667236328125,
"max_sog": 1.5
}
},
"time_window": {
"start": "2026-07-16T00:05:06+00:00",
"end": "2026-07-16T02:38:17+00:00"
},
"points_count": {
"vessel_a": 45,
"vessel_b": 45
},
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"score": {
"value": 92,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 4m, avg 13m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 153 minutes"
},
"speed_stability": {
"score": 17,
"max": 20,
"detail": "both nearly stationary; 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: Strait of Gibraltar Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (BUKWANG and KUKDONG3HO) maintained close proximity (min 4m, avg 13m) for 153 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.4 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 35.02957169999999820220182300545275211334228515625,
"lon": 129.072778900000002977321855723857879638671875
},
"time_window": {
"start_ts": "2026-07-16T00:05:06+00:00",
"end_ts": "2026-07-16T02:38:17+00:00"
},
"searched_at": "2026-07-16T06:45:01.899431+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 37 meters
- Average Distance: 55 meters
- Duration: 1h 12m
- Period: 2026-07-16T00:34:24+00:00 to 2026-07-16T01:46:52+00:00
- Vessel A Avg Speed: 0.4 knots
- Vessel B Avg Speed: 0.3 knots
- Zone: Strait of Gibraltar Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (JINSUNG and KUKDONG3HO) maintained close proximity (min 37m, avg 55m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.4 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 37m, avg 55m |
| Duration | 15/25 | Duration 72 minutes |
| Speed Stability | 17/20 | both nearly stationary; stable speeds |
| Distance Consistency | 15/15 | Distance variance ±8m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Strait of Gibraltar Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 440192560,
"name": "JINSUNG",
"flag": "REPUBLIC OF KOREA"
},
"vessel_b": {
"mmsi": 440112380,
"name": "KUKDONG3HO",
"flag": "REPUBLIC OF KOREA"
},
"min_distance_m": 36.7999999999999971578290569595992565155029296875,
"avg_distance_m": 54.7999999999999971578290569595992565155029296875,
"distance_consistency_m": 7.5999999999999996447286321199499070644378662109375,
"duration_minutes": 72.5,
"overlap_duration_s": 4348,
"speed_a_avg": 0.38000000000000000444089209850062616169452667236328125,
"speed_a_std": 0.330000000000000015543122344752191565930843353271484375,
"speed_b_avg": 0.340000000000000024424906541753443889319896697998046875,
"speed_b_std": 0.2300000000000000099920072216264088638126850128173828125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.38000000000000000444089209850062616169452667236328125,
"max_sog": 1.100000000000000088817841970012523233890533447265625
},
"vessel_b": {
"avg_sog": 0.340000000000000024424906541753443889319896697998046875,
"max_sog": 0.6999999999999999555910790149937383830547332763671875
}
},
"time_window": {
"start": "2026-07-16T00:34:24+00:00",
"end": "2026-07-16T01:46:52+00:00"
},
"points_count": {
"vessel_a": 16,
"vessel_b": 16
},
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"score": {
"value": 82,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 37m, avg 55m"
},
"duration": {
"score": 15,
"max": 25,
"detail": "Duration 72 minutes"
},
"speed_stability": {
"score": 17,
"max": 20,
"detail": "both nearly stationary; 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: Strait of Gibraltar Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (JINSUNG and KUKDONG3HO) maintained close proximity (min 37m, avg 55m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.4 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
}
}- Zone: Strait of Gibraltar Surveillance Zone
- Duration: 2h 31m
- Data Points: 39 AIS positions
- Period: 2026-07-16T00:00:42+00:00 to 2026-07-16T02:31:53+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"dwell_minutes": 151.19999999999998863131622783839702606201171875,
"points_in_zone": 39,
"first_point": {
"ts": "2026-07-16T00:00:42+00:00",
"lat": 35.02948169999999805668267072178423404693603515625,
"lon": 129.07288829999998824860085733234882354736328125
},
"last_point": {
"ts": "2026-07-16T02:31:53+00:00",
"lat": 35.02951329999999785513864480890333652496337890625,
"lon": 129.07302329999998846687958575785160064697265625
}
}- Duration: 2h 31m
- Radius: 49 meters
- Data Points: 39 AIS positions
- Centroid: 35.0296, 129.0728
- Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 48.7000000000000028421709430404007434844970703125,
"duration_minutes": 151.19999999999998863131622783839702606201171875,
"points": 39,
"centroid": {
"lat": 35.02960893846153567210421897470951080322265625,
"lon": 129.072753410256410688816686160862445831298828125
},
"bbox": {
"min_lat": 35.02938329999999922392817097716033458709716796875,
"min_lon": 129.07225329999999985375325195491313934326171875,
"max_lat": 35.02979500000000001591615728102624416351318359375,
"max_lon": 129.073074999999988676790962927043437957763671875
},
"zone_id": "discovered_001"
}- Minimum Distance: 34 meters
- Average Distance: 53 meters
- Duration: 2h 30m
- Period: 2026-07-15T23:16:05+00:00 to 2026-07-16T01:46:52+00:00
- Vessel A Avg Speed: 0.3 knots
- Vessel B Avg Speed: 0.3 knots
- Zone: Strait of Gibraltar Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (JINSUNG and KUKDONG3HO) maintained close proximity (min 34m, avg 53m) for 151 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 34m, avg 53m |
| Duration | 25/25 | Duration 151 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±7m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Strait of Gibraltar Surveillance Zone |
🛰️ Satellite Corroboration
No satellite imagery for this time/location
No Sentinel-1 scenes covering AOI and time window
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 440192560,
"name": "JINSUNG",
"flag": "REPUBLIC OF KOREA"
},
"vessel_b": {
"mmsi": 440112380,
"name": "KUKDONG3HO",
"flag": "REPUBLIC OF KOREA"
},
"min_distance_m": 34.10000000000000142108547152020037174224853515625,
"avg_distance_m": 53.2000000000000028421709430404007434844970703125,
"distance_consistency_m": 7.20000000000000017763568394002504646778106689453125,
"duration_minutes": 150.80000000000001136868377216160297393798828125,
"overlap_duration_s": 9047,
"speed_a_avg": 0.309999999999999997779553950749686919152736663818359375,
"speed_a_std": 0.270000000000000017763568394002504646778106689453125,
"speed_b_avg": 0.309999999999999997779553950749686919152736663818359375,
"speed_b_std": 0.2399999999999999911182158029987476766109466552734375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.309999999999999997779553950749686919152736663818359375,
"max_sog": 1.100000000000000088817841970012523233890533447265625
},
"vessel_b": {
"avg_sog": 0.309999999999999997779553950749686919152736663818359375,
"max_sog": 1
}
},
"time_window": {
"start": "2026-07-15T23:16:05+00:00",
"end": "2026-07-16T01:46:52+00:00"
},
"points_count": {
"vessel_a": 31,
"vessel_b": 31
},
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 34m, avg 53m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 151 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b17m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (JINSUNG and KUKDONG3HO) maintained close proximity (min 34m, avg 53m) for 151 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 35.02939549999999968576958053745329380035400390625,
"lon": 129.07292929999999842038960196077823638916015625
},
"time_window": {
"start_ts": "2026-07-15T23:16:05+00:00",
"end_ts": "2026-07-16T01:46:52+00:00"
},
"searched_at": "2026-07-16T05:45:04.233612+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 4 meters
- Average Distance: 13 meters
- Duration: 3h 33m
- Period: 2026-07-15T23:04:26+00:00 to 2026-07-16T02:38:17+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.4 knots
- Zone: Strait of Gibraltar Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (BUKWANG and KUKDONG3HO) maintained close proximity (min 4m, avg 13m) for 214 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.4 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 4m, avg 13m |
| Duration | 25/25 | Duration 214 minutes |
| Speed Stability | 17/20 | both nearly stationary; stable speeds |
| Distance Consistency | 15/15 | Distance variance ±5m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Strait of Gibraltar Surveillance Zone |
🛰️ Satellite Corroboration
No satellite imagery for this time/location
No Sentinel-1 scenes covering AOI and time window
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 440191310,
"imo": 9181352,
"name": "BUKWANG",
"flag": "REPUBLIC OF KOREA"
},
"vessel_b": {
"mmsi": 440112380,
"name": "KUKDONG3HO",
"flag": "REPUBLIC OF KOREA"
},
"min_distance_m": 3.5,
"avg_distance_m": 13.199999999999999289457264239899814128875732421875,
"distance_consistency_m": 4.70000000000000017763568394002504646778106689453125,
"duration_minutes": 213.80000000000001136868377216160297393798828125,
"overlap_duration_s": 12831,
"speed_a_avg": 0.13000000000000000444089209850062616169452667236328125,
"speed_a_std": 0.13000000000000000444089209850062616169452667236328125,
"speed_b_avg": 0.36999999999999999555910790149937383830547332763671875,
"speed_b_std": 0.38000000000000000444089209850062616169452667236328125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.13000000000000000444089209850062616169452667236328125,
"max_sog": 0.5
},
"vessel_b": {
"avg_sog": 0.36999999999999999555910790149937383830547332763671875,
"max_sog": 1.5
}
},
"time_window": {
"start": "2026-07-15T23:04:26+00:00",
"end": "2026-07-16T02:38:17+00:00"
},
"points_count": {
"vessel_a": 58,
"vessel_b": 58
},
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"score": {
"value": 92,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 4m, avg 13m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 214 minutes"
},
"speed_stability": {
"score": 17,
"max": 20,
"detail": "both nearly stationary; 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: Strait of Gibraltar Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (BUKWANG and KUKDONG3HO) maintained close proximity (min 4m, avg 13m) for 214 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.4 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 35.02953850000000102227204479277133941650390625,
"lon": 129.07281080000001338703441433608531951904296875
},
"time_window": {
"start_ts": "2026-07-15T23:04:26+00:00",
"end_ts": "2026-07-16T02:38:17+00:00"
},
"searched_at": "2026-07-16T05:45:01.400748+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Strait of Gibraltar Surveillance Zone
- Duration: 3h 29m
- Data Points: 52 AIS positions
- Period: 2026-07-15T23:02:52+00:00 to 2026-07-16T02:31:53+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"dwell_minutes": 209,
"points_in_zone": 52,
"first_point": {
"ts": "2026-07-15T23:02:52+00:00",
"lat": 35.02961169999999668789314455352723598480224609375,
"lon": 129.072546700000003738750820048153400421142578125
},
"last_point": {
"ts": "2026-07-16T02:31:53+00:00",
"lat": 35.02951329999999785513864480890333652496337890625,
"lon": 129.07302329999998846687958575785160064697265625
}
}- Duration: 3h 29m
- Radius: 53 meters
- Data Points: 52 AIS positions
- Centroid: 35.0296, 129.0728
- Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 52.89999999999999857891452847979962825775146484375,
"duration_minutes": 209,
"points": 52,
"centroid": {
"lat": 35.02957801923076175398819032125174999237060546875,
"lon": 129.0727877519231014957767911255359649658203125
},
"bbox": {
"min_lat": 35.029283300000003009699867106974124908447265625,
"min_lon": 129.07225329999999985375325195491313934326171875,
"max_lat": 35.02979500000000001591615728102624416351318359375,
"max_lon": 129.07311329999998861239873804152011871337890625
},
"zone_id": "discovered_001"
}- Minimum Distance: 34 meters
- Average Distance: 53 meters
- Duration: 3h 38m
- Period: 2026-07-15T22:08:23+00:00 to 2026-07-16T01:46:52+00:00
- Vessel A Avg Speed: 0.3 knots
- Vessel B Avg Speed: 0.3 knots
- Zone: Strait of Gibraltar Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (JINSUNG and KUKDONG3HO) maintained close proximity (min 34m, avg 53m) for 218 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 34m, avg 53m |
| Duration | 25/25 | Duration 218 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±6m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Strait of Gibraltar Surveillance Zone |
🛰️ Satellite Corroboration
No satellite imagery for this time/location
No Sentinel-1 scenes covering AOI and time window
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 440192560,
"name": "JINSUNG",
"flag": "REPUBLIC OF KOREA"
},
"vessel_b": {
"mmsi": 440112380,
"name": "KUKDONG3HO",
"flag": "REPUBLIC OF KOREA"
},
"min_distance_m": 34.10000000000000142108547152020037174224853515625,
"avg_distance_m": 52.60000000000000142108547152020037174224853515625,
"distance_consistency_m": 6.20000000000000017763568394002504646778106689453125,
"duration_minutes": 218.5,
"overlap_duration_s": 13109,
"speed_a_avg": 0.309999999999999997779553950749686919152736663818359375,
"speed_a_std": 0.2399999999999999911182158029987476766109466552734375,
"speed_b_avg": 0.299999999999999988897769753748434595763683319091796875,
"speed_b_std": 0.2300000000000000099920072216264088638126850128173828125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.309999999999999997779553950749686919152736663818359375,
"max_sog": 1.100000000000000088817841970012523233890533447265625
},
"vessel_b": {
"avg_sog": 0.299999999999999988897769753748434595763683319091796875,
"max_sog": 1
}
},
"time_window": {
"start": "2026-07-15T22:08:23+00:00",
"end": "2026-07-16T01:46:52+00:00"
},
"points_count": {
"vessel_a": 43,
"vessel_b": 43
},
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 34m, avg 53m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 218 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: Strait of Gibraltar Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (JINSUNG and KUKDONG3HO) maintained close proximity (min 34m, avg 53m) for 218 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 35.029413599999998041312210261821746826171875,
"lon": 129.07284789999999929932528175413608551025390625
},
"time_window": {
"start_ts": "2026-07-15T22:08:23+00:00",
"end_ts": "2026-07-16T01:46:52+00:00"
},
"searched_at": "2026-07-16T04:45:04.648112+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 4 meters
- Average Distance: 13 meters
- Duration: 4h 30m
- Period: 2026-07-15T22:07:56+00:00 to 2026-07-16T02:38:17+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.3 knots
- Zone: Strait of Gibraltar Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (BUKWANG and KUKDONG3HO) maintained close proximity (min 4m, avg 13m) for 270 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 4m, avg 13m |
| Duration | 25/25 | Duration 270 minutes |
| Speed Stability | 17/20 | both nearly stationary; stable speeds |
| Distance Consistency | 15/15 | Distance variance ±4m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Strait of Gibraltar Surveillance Zone |
🛰️ Satellite Corroboration
No satellite imagery for this time/location
No Sentinel-1 scenes covering AOI and time window
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 440191310,
"imo": 9181352,
"name": "BUKWANG",
"flag": "REPUBLIC OF KOREA"
},
"vessel_b": {
"mmsi": 440112380,
"name": "KUKDONG3HO",
"flag": "REPUBLIC OF KOREA"
},
"min_distance_m": 3.5,
"avg_distance_m": 12.800000000000000710542735760100185871124267578125,
"distance_consistency_m": 4.4000000000000003552713678800500929355621337890625,
"duration_minutes": 270.3999999999999772626324556767940521240234375,
"overlap_duration_s": 16221,
"speed_a_avg": 0.14000000000000001332267629550187848508358001708984375,
"speed_a_std": 0.13000000000000000444089209850062616169452667236328125,
"speed_b_avg": 0.340000000000000024424906541753443889319896697998046875,
"speed_b_std": 0.35999999999999998667732370449812151491641998291015625,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.14000000000000001332267629550187848508358001708984375,
"max_sog": 0.5
},
"vessel_b": {
"avg_sog": 0.340000000000000024424906541753443889319896697998046875,
"max_sog": 1.5
}
},
"time_window": {
"start": "2026-07-15T22:07:56+00:00",
"end": "2026-07-16T02:38:17+00:00"
},
"points_count": {
"vessel_a": 71,
"vessel_b": 71
},
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"score": {
"value": 92,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 4m, avg 13m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 270 minutes"
},
"speed_stability": {
"score": 17,
"max": 20,
"detail": "both nearly stationary; 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: Strait of Gibraltar Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (BUKWANG and KUKDONG3HO) maintained close proximity (min 4m, avg 13m) for 270 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 35.02954849999999709098119637928903102874755859375,
"lon": 129.072747700000007853304850868880748748779296875
},
"time_window": {
"start_ts": "2026-07-15T22:07:56+00:00",
"end_ts": "2026-07-16T02:38:17+00:00"
},
"searched_at": "2026-07-16T04:45:07.213937+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Strait of Gibraltar Surveillance Zone
- Duration: 4h 24m
- Data Points: 67 AIS positions
- Period: 2026-07-15T22:06:59+00:00 to 2026-07-16T02:31:53+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"dwell_minutes": 264.8999999999999772626324556767940521240234375,
"points_in_zone": 67,
"first_point": {
"ts": "2026-07-15T22:06:59+00:00",
"lat": 35.0296282999999988305717124603688716888427734375,
"lon": 129.07246670000000676736817695200443267822265625
},
"last_point": {
"ts": "2026-07-16T02:31:53+00:00",
"lat": 35.02951329999999785513864480890333652496337890625,
"lon": 129.07302329999998846687958575785160064697265625
}
}- Duration: 4h 24m
- Radius: 50 meters
- Data Points: 67 AIS positions
- Centroid: 35.0296, 129.0727
- Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 49.89999999999999857891452847979962825775146484375,
"duration_minutes": 264.8999999999999772626324556767940521240234375,
"points": 67,
"centroid": {
"lat": 35.02959062388060118564681033603847026824951171875,
"lon": 129.072709249253790630973526276648044586181640625
},
"bbox": {
"min_lat": 35.029283300000003009699867106974124908447265625,
"min_lon": 129.07225329999999985375325195491313934326171875,
"max_lat": 35.02979500000000001591615728102624416351318359375,
"max_lon": 129.07311329999998861239873804152011871337890625
},
"zone_id": "discovered_001"
}- Minimum Distance: 34 meters
- Average Distance: 53 meters
- Duration: 4h 4m
- Period: 2026-07-15T21:42:49+00:00 to 2026-07-16T01:46:52+00:00
- Vessel A Avg Speed: 0.3 knots
- Vessel B Avg Speed: 0.3 knots
- Zone: Strait of Gibraltar Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (JINSUNG and KUKDONG3HO) maintained close proximity (min 34m, avg 53m) for 244 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 34m, avg 53m |
| Duration | 25/25 | Duration 244 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±7m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Strait of Gibraltar Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 440192560,
"name": "JINSUNG",
"flag": "REPUBLIC OF KOREA"
},
"vessel_b": {
"mmsi": 440112380,
"name": "KUKDONG3HO",
"flag": "REPUBLIC OF KOREA"
},
"min_distance_m": 34.10000000000000142108547152020037174224853515625,
"avg_distance_m": 53.2000000000000028421709430404007434844970703125,
"distance_consistency_m": 7.20000000000000017763568394002504646778106689453125,
"duration_minutes": 244.099999999999994315658113919198513031005859375,
"overlap_duration_s": 14643,
"speed_a_avg": 0.330000000000000015543122344752191565930843353271484375,
"speed_a_std": 0.289999999999999980015985556747182272374629974365234375,
"speed_b_avg": 0.2800000000000000266453525910037569701671600341796875,
"speed_b_std": 0.2300000000000000099920072216264088638126850128173828125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.330000000000000015543122344752191565930843353271484375,
"max_sog": 1.5
},
"vessel_b": {
"avg_sog": 0.2800000000000000266453525910037569701671600341796875,
"max_sog": 1
}
},
"time_window": {
"start": "2026-07-15T21:42:49+00:00",
"end": "2026-07-16T01:46:52+00:00"
},
"points_count": {
"vessel_a": 47,
"vessel_b": 47
},
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 34m, avg 53m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 244 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b17m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (JINSUNG and KUKDONG3HO) maintained close proximity (min 34m, avg 53m) for 244 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
}
}- Minimum Distance: 4 meters
- Average Distance: 13 meters
- Duration: 4h 58m
- Period: 2026-07-15T21:39:24+00:00 to 2026-07-16T02:38:17+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.3 knots
- Zone: Strait of Gibraltar Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (BUKWANG and KUKDONG3HO) maintained close proximity (min 4m, avg 13m) for 299 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 4m, avg 13m |
| Duration | 25/25 | Duration 299 minutes |
| Speed Stability | 17/20 | both nearly stationary; stable speeds |
| Distance Consistency | 15/15 | Distance variance ±4m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Strait of Gibraltar Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 440191310,
"imo": 9181352,
"name": "BUKWANG",
"flag": "REPUBLIC OF KOREA"
},
"vessel_b": {
"mmsi": 440112380,
"name": "KUKDONG3HO",
"flag": "REPUBLIC OF KOREA"
},
"min_distance_m": 3.5,
"avg_distance_m": 12.699999999999999289457264239899814128875732421875,
"distance_consistency_m": 4.29999999999999982236431605997495353221893310546875,
"duration_minutes": 298.8999999999999772626324556767940521240234375,
"overlap_duration_s": 17933,
"speed_a_avg": 0.14000000000000001332267629550187848508358001708984375,
"speed_a_std": 0.13000000000000000444089209850062616169452667236328125,
"speed_b_avg": 0.330000000000000015543122344752191565930843353271484375,
"speed_b_std": 0.34999999999999997779553950749686919152736663818359375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.14000000000000001332267629550187848508358001708984375,
"max_sog": 0.5
},
"vessel_b": {
"avg_sog": 0.330000000000000015543122344752191565930843353271484375,
"max_sog": 1.5
}
},
"time_window": {
"start": "2026-07-15T21:39:24+00:00",
"end": "2026-07-16T02:38:17+00:00"
},
"points_count": {
"vessel_a": 77,
"vessel_b": 77
},
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"score": {
"value": 92,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 4m, avg 13m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 299 minutes"
},
"speed_stability": {
"score": 17,
"max": 20,
"detail": "both nearly stationary; 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: Strait of Gibraltar Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (BUKWANG and KUKDONG3HO) maintained close proximity (min 4m, avg 13m) for 299 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
}
}- Zone: Strait of Gibraltar Surveillance Zone
- Duration: 5h 16m
- Data Points: 77 AIS positions
- Period: 2026-07-15T21:15:50+00:00 to 2026-07-16T02:31:53+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_001",
"zone_name": "Strait of Gibraltar Surveillance Zone",
"dwell_minutes": 316.1000000000000227373675443232059478759765625,
"points_in_zone": 77,
"first_point": {
"ts": "2026-07-15T21:15:50+00:00",
"lat": 35.0299432999999993398887454532086849212646484375,
"lon": 129.06586329999998952189343981444835662841796875
},
"last_point": {
"ts": "2026-07-16T02:31:53+00:00",
"lat": 35.02951329999999785513864480890333652496337890625,
"lon": 129.07302329999998846687958575785160064697265625
}
}- Duration: 5h 16m
- Radius: 879 meters
- Data Points: 77 AIS positions
- Centroid: 35.0295, 129.0723
- Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 878.6000000000000227373675443232059478759765625,
"duration_minutes": 316.1000000000000227373675443232059478759765625,
"points": 77,
"centroid": {
"lat": 35.0295187662337781375754275359213352203369140625,
"lon": 129.072310081818187654789653606712818145751953125
},
"bbox": {
"min_lat": 35.02673829999999810524968779645860195159912109375,
"min_lon": 129.062886700000007067501428537070751190185546875,
"max_lat": 35.0299432999999993398887454532086849212646484375,
"max_lon": 129.07311329999998861239873804152011871337890625
},
"zone_id": "discovered_001"
}Recent Position Data
| Time (UTC) | Lat | Lon | Speed | Course | Zone |
|---|---|---|---|---|---|
| Jul 31 22:55 | 35.0095 | 129.0648 | 0.4 kn | 88.2° | Strait of Gibraltar Surveillance Zone |
| Jul 31 22:53 | 35.0095 | 129.0647 | 0.4 kn | 145.2° | Strait of Gibraltar Surveillance Zone |
| Jul 31 22:49 | 35.0095 | 129.0645 | 0.0 kn | 92.4° | Strait of Gibraltar Surveillance Zone |
| Jul 31 22:47 | 35.0095 | 129.0644 | 0.0 kn | 138.1° | Strait of Gibraltar Surveillance Zone |
| Jul 31 22:43 | 35.0095 | 129.0643 | 0.1 kn | 155.8° | Strait of Gibraltar Surveillance Zone |
| Jul 31 22:38 | 35.0095 | 129.0643 | 0.2 kn | 297.7° | Strait of Gibraltar Surveillance Zone |
| Jul 31 22:36 | 35.0095 | 129.0643 | 0.1 kn | 282.8° | Strait of Gibraltar Surveillance Zone |
| Jul 31 22:33 | 35.0095 | 129.0643 | 0.1 kn | 270.2° | Strait of Gibraltar Surveillance Zone |
| Jul 31 22:29 | 35.0095 | 129.0645 | 0.0 kn | 266.1° | Strait of Gibraltar Surveillance Zone |
| Jul 31 22:26 | 35.0095 | 129.0644 | 0.0 kn | 96.0° | Strait of Gibraltar Surveillance Zone |
| Jul 31 22:18 | 35.0094 | 129.0640 | 0.3 kn | 63.3° | Strait of Gibraltar Surveillance Zone |
| Jul 31 22:16 | 35.0093 | 129.0637 | 0.3 kn | 69.7° | Strait of Gibraltar Surveillance Zone |
| Jul 31 22:06 | 35.0094 | 129.0645 | 1.1 kn | 310.6° | Strait of Gibraltar Surveillance Zone |
| Jul 31 21:53 | 35.0059 | 129.0663 | 0.3 kn | 343.2° | Strait of Gibraltar Surveillance Zone |
| Jul 31 21:48 | 35.0053 | 129.0666 | 0.3 kn | 266.8° | Strait of Gibraltar Surveillance Zone |
| Jul 31 21:41 | 35.0053 | 129.0669 | 0.2 kn | 275.4° | Strait of Gibraltar Surveillance Zone |
| Jul 31 21:38 | 35.0052 | 129.0669 | 0.2 kn | 288.4° | Strait of Gibraltar Surveillance Zone |
| Jul 31 21:36 | 35.0052 | 129.0670 | 0.3 kn | 359.0° | Strait of Gibraltar Surveillance Zone |
| Jul 31 21:27 | 35.0052 | 129.0666 | 0.6 kn | 319.2° | Strait of Gibraltar Surveillance Zone |
| Jul 31 21:23 | 35.0053 | 129.0662 | 1.2 kn | 129.2° | Strait of Gibraltar 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.
