IMO 9396787
Vessel information
Detected Events (100)
- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 1h 23m
- Data Points: 11 AIS positions
- Period: 2026-10-27T10:10:41+00:00 to 2026-10-27T11:33:39+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 83,
"points_in_zone": 11,
"first_point": {
"ts": "2026-10-27T10:10:41+00:00",
"lat": 34.6876682999999985668182489462196826934814453125,
"lon": 33.33477500000000048885340220294892787933349609375
},
"last_point": {
"ts": "2026-10-27T11:33:39+00:00",
"lat": 34.649979999999999336068867705762386322021484375,
"lon": 33.29416330000000101563273346982896327972412109375
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 2h 23m
- Data Points: 16 AIS positions
- Period: 2026-10-27T09:10:34+00:00 to 2026-10-27T11:33:39+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 143.099999999999994315658113919198513031005859375,
"points_in_zone": 16,
"first_point": {
"ts": "2026-10-27T09:10:34+00:00",
"lat": 34.687493299999999862848198972642421722412109375,
"lon": 33.3346767000000028247086447663605213165283203125
},
"last_point": {
"ts": "2026-10-27T11:33:39+00:00",
"lat": 34.649979999999999336068867705762386322021484375,
"lon": 33.29416330000000101563273346982896327972412109375
}
}- Duration: 1h 58m
- Radius: 88 meters
- Data Points: 11 AIS positions
- Centroid: 34.6876, 33.3346
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 87.599999999999994315658113919198513031005859375,
"duration_minutes": 118.099999999999994315658113919198513031005859375,
"points": 11,
"centroid": {
"lat": 34.68759241818181493499650969170033931732177734375,
"lon": 33.33463425454545614456947077997028827667236328125
},
"bbox": {
"min_lat": 34.687454999999999927240423858165740966796875,
"min_lon": 33.333761699999996608312358148396015167236328125,
"max_lat": 34.68791499999999672354533686302602291107177734375,
"max_lon": 33.33482169999999911169652477838099002838134765625
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 3h 29m
- Data Points: 19 AIS positions
- Period: 2026-10-27T08:04:30+00:00 to 2026-10-27T11:33:39+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 209.19999999999998863131622783839702606201171875,
"points_in_zone": 19,
"first_point": {
"ts": "2026-10-27T08:04:30+00:00",
"lat": 34.68719829999999859637682675383985042572021484375,
"lon": 33.33459830000000323479980579577386379241943359375
},
"last_point": {
"ts": "2026-10-27T11:33:39+00:00",
"lat": 34.649979999999999336068867705762386322021484375,
"lon": 33.29416330000000101563273346982896327972412109375
}
}- Duration: 3h 4m
- Radius: 91 meters
- Data Points: 14 AIS positions
- Centroid: 34.6875, 33.3346
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 90.599999999999994315658113919198513031005859375,
"duration_minutes": 184.19999999999998863131622783839702606201171875,
"points": 14,
"centroid": {
"lat": 34.68752094285714093757633236236870288848876953125,
"lon": 33.33462822142858072993476525880396366119384765625
},
"bbox": {
"min_lat": 34.68719829999999859637682675383985042572021484375,
"min_lon": 33.333761699999996608312358148396015167236328125,
"max_lat": 34.68791499999999672354533686302602291107177734375,
"max_lon": 33.33482169999999911169652477838099002838134765625
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 4h 23m
- Data Points: 23 AIS positions
- Period: 2026-10-27T07:10:35+00:00 to 2026-10-27T11:33:39+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 263.1000000000000227373675443232059478759765625,
"points_in_zone": 23,
"first_point": {
"ts": "2026-10-27T07:10:35+00:00",
"lat": 34.68707169999999706533344578929245471954345703125,
"lon": 33.33456670000000343634383170865476131439208984375
},
"last_point": {
"ts": "2026-10-27T11:33:39+00:00",
"lat": 34.649979999999999336068867705762386322021484375,
"lon": 33.29416330000000101563273346982896327972412109375
}
}- Duration: 3h 58m
- Radius: 95 meters
- Data Points: 18 AIS positions
- Centroid: 34.6874, 33.3346
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 95.2000000000000028421709430404007434844970703125,
"duration_minutes": 238.099999999999994315658113919198513031005859375,
"points": 18,
"centroid": {
"lat": 34.6874220333333340704484726302325725555419921875,
"lon": 33.3346121388888860792576451785862445831298828125
},
"bbox": {
"min_lat": 34.68702669999999699257386964745819568634033203125,
"min_lon": 33.333761699999996608312358148396015167236328125,
"max_lat": 34.68791499999999672354533686302602291107177734375,
"max_lon": 33.33482169999999911169652477838099002838134765625
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 5h 29m
- Data Points: 26 AIS positions
- Period: 2026-10-27T06:04:38+00:00 to 2026-10-27T11:33:39+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 329,
"points_in_zone": 26,
"first_point": {
"ts": "2026-10-27T06:04:38+00:00",
"lat": 34.686700000000001864464138634502887725830078125,
"lon": 33.33442000000000149384504766203463077545166015625
},
"last_point": {
"ts": "2026-10-27T11:33:39+00:00",
"lat": 34.649979999999999336068867705762386322021484375,
"lon": 33.29416330000000101563273346982896327972412109375
}
}- Duration: 5h 4m
- Radius: 100 meters
- Data Points: 21 AIS positions
- Centroid: 34.6873, 33.3346
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 100,
"duration_minutes": 304,
"points": 21,
"centroid": {
"lat": 34.68733356666667333456643973477184772491455078125,
"lon": 33.334596276190467278865980915725231170654296875
},
"bbox": {
"min_lat": 34.686700000000001864464138634502887725830078125,
"min_lon": 33.333761699999996608312358148396015167236328125,
"max_lat": 34.68791499999999672354533686302602291107177734375,
"max_lon": 33.33482169999999911169652477838099002838134765625
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 2m
- Data Points: 27 AIS positions
- Period: 2026-10-27T05:31:34+00:00 to 2026-10-27T11:33:39+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 362.1000000000000227373675443232059478759765625,
"points_in_zone": 27,
"first_point": {
"ts": "2026-10-27T05:31:34+00:00",
"lat": 34.685648299999996879705577157437801361083984375,
"lon": 33.33423330000000106565494206734001636505126953125
},
"last_point": {
"ts": "2026-10-27T11:33:39+00:00",
"lat": 34.649979999999999336068867705762386322021484375,
"lon": 33.29416330000000101563273346982896327972412109375
}
}- Duration: 5h 37m
- Radius: 181 meters
- Data Points: 22 AIS positions
- Centroid: 34.6873, 33.3346
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 181.30000000000001136868377216160297393798828125,
"duration_minutes": 337.1000000000000227373675443232059478759765625,
"points": 22,
"centroid": {
"lat": 34.687256963636372120163287036120891571044921875,
"lon": 33.33457977727272947277015191502869129180908203125
},
"bbox": {
"min_lat": 34.685648299999996879705577157437801361083984375,
"min_lon": 33.333761699999996608312358148396015167236328125,
"max_lat": 34.68791499999999672354533686302602291107177734375,
"max_lon": 33.33482169999999911169652477838099002838134765625
},
"zone_id": "discovered_039"
}- Duration: 6h 25m
- Radius: 1,585 meters
- Data Points: 22 AIS positions
- Centroid: 34.6862, 33.3344
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 1585.299999999999954525264911353588104248046875,
"duration_minutes": 385.69999999999998863131622783839702606201171875,
"points": 22,
"centroid": {
"lat": 34.68624059999999786896296427585184574127197265625,
"lon": 33.33441962727273022437657346017658710479736328125
},
"bbox": {
"min_lat": 34.67220669999999671517798560671508312225341796875,
"min_lon": 33.33115670000000108075255411677062511444091796875,
"max_lat": 34.68771000000000270802047452889382839202880859375,
"max_lon": 33.33482169999999911169652477838099002838134765625
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 25m
- Data Points: 22 AIS positions
- Period: 2026-10-27T04:17:46+00:00 to 2026-10-27T10:43:30+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 385.69999999999998863131622783839702606201171875,
"points_in_zone": 22,
"first_point": {
"ts": "2026-10-27T04:17:46+00:00",
"lat": 34.67220669999999671517798560671508312225341796875,
"lon": 33.33115670000000108075255411677062511444091796875
},
"last_point": {
"ts": "2026-10-27T10:43:30+00:00",
"lat": 34.68771000000000270802047452889382839202880859375,
"lon": 33.33469500000000351747075910679996013641357421875
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 32m
- Data Points: 25 AIS positions
- Period: 2026-10-27T03:52:38+00:00 to 2026-10-27T10:25:34+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 392.8999999999999772626324556767940521240234375,
"points_in_zone": 25,
"first_point": {
"ts": "2026-10-27T03:52:38+00:00",
"lat": 34.69756170000000139452822622843086719512939453125,
"lon": 33.30742500000000205773176276125013828277587890625
},
"last_point": {
"ts": "2026-10-27T10:25:34+00:00",
"lat": 34.68762670000000269965312327258288860321044921875,
"lon": 33.334796699999998281782609410583972930908203125
}
}- Minimum Distance: 57 meters
- Average Distance: 69 meters
- Duration: 1h 18m
- Period: 2026-10-27T02:19:38+00:00 to 2026-10-27T03:37:47+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (HARBIYE and ZONDAR) maintained close proximity (min 57m, avg 69m) for 78 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 57m, avg 69m |
| Duration | 15/25 | Duration 78 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±14m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea 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": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 538005166,
"imo": 9351634,
"name": "ZONDAR",
"flag": "Marshall Is"
},
"min_distance_m": 56.7999999999999971578290569595992565155029296875,
"avg_distance_m": 68.900000000000005684341886080801486968994140625,
"distance_consistency_m": 14.0999999999999996447286321199499070644378662109375,
"duration_minutes": 78.2000000000000028421709430404007434844970703125,
"overlap_duration_s": 4689,
"speed_a_avg": 0.11999999999999999555910790149937383830547332763671875,
"speed_a_std": 0.270000000000000017763568394002504646778106689453125,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.11999999999999999555910790149937383830547332763671875,
"max_sog": 0.59999999999999997779553950749686919152736663818359375
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-27T02:19:38+00:00",
"end": "2026-10-27T03:37:47+00:00"
},
"points_count": {
"vessel_a": 5,
"vessel_b": 5
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 85,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 57m, avg 69m"
},
"duration": {
"score": 15,
"max": 25,
"detail": "Duration 78 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b114m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (HARBIYE and ZONDAR) maintained close proximity (min 57m, avg 69m) for 78 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 34.7079566999999968857082421891391277313232421875,
"lon": 33.3202399999999983037923811934888362884521484375
},
"time_window": {
"start_ts": "2026-10-27T02:19:38+00:00",
"end_ts": "2026-10-27T03:37:47+00:00"
},
"searched_at": "2026-10-27T04:00:05.032595+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 15m
- Data Points: 26 AIS positions
- Period: 2026-10-27T02:04:37+00:00 to 2026-10-27T08:19:35+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 375,
"points_in_zone": 26,
"first_point": {
"ts": "2026-10-27T02:04:37+00:00",
"lat": 34.7082266999999973222656990401446819305419921875,
"lon": 33.3199350000000009686118573881685733795166015625
},
"last_point": {
"ts": "2026-10-27T08:19:35+00:00",
"lat": 34.68729499999999887904778006486594676971435546875,
"lon": 33.3346099999999978535925038158893585205078125
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 26m
- Data Points: 28 AIS positions
- Period: 2026-10-27T01:52:40+00:00 to 2026-10-27T08:19:35+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 386.8999999999999772626324556767940521240234375,
"points_in_zone": 28,
"first_point": {
"ts": "2026-10-27T01:52:40+00:00",
"lat": 34.708224999999998772182152606546878814697265625,
"lon": 33.3199299999999993815436027944087982177734375
},
"last_point": {
"ts": "2026-10-27T08:19:35+00:00",
"lat": 34.68729499999999887904778006486594676971435546875,
"lon": 33.3346099999999978535925038158893585205078125
}
}- Duration: 1h 53m
- Radius: 501 meters
- Data Points: 10 AIS positions
- Centroid: 34.7078, 33.3195
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 501,
"duration_minutes": 113.900000000000005684341886080801486968994140625,
"points": 10,
"centroid": {
"lat": 34.70782232999999905587173998355865478515625,
"lon": 33.31949566000000828580596134997904300689697265625
},
"bbox": {
"min_lat": 34.7045600000000007412381819449365139007568359375,
"min_lon": 33.315713299999998753264662809669971466064453125,
"max_lat": 34.70824830000000105201252154074609279632568359375,
"max_lon": 33.31999830000000173413354787044227123260498046875
},
"zone_id": "discovered_039"
}- Minimum Distance: 300 meters
- Average Distance: 304 meters
- Duration: 1h 42m
- Period: 2026-10-27T00:22:39+00:00 to 2026-10-27T02:04:37+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (HARBIYE and HISTRIA ATLAS) maintained close proximity (min 300m, avg 304m) for 102 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 10/25 | Min distance 300m, avg 304m |
| Duration | 20/25 | Duration 102 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±3m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 636019212,
"imo": 9800790,
"name": "HISTRIA ATLAS",
"flag": "Liberia"
},
"min_distance_m": 300.30000000000001136868377216160297393798828125,
"avg_distance_m": 304.3999999999999772626324556767940521240234375,
"distance_consistency_m": 3.20000000000000017763568394002504646778106689453125,
"duration_minutes": 102,
"overlap_duration_s": 6118,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-10-27T00:22:39+00:00",
"end": "2026-10-27T02:04:37+00:00"
},
"points_count": {
"vessel_a": 8,
"vessel_b": 8
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 10,
"max": 25,
"detail": "Min distance 300m, avg 304m"
},
"duration": {
"score": 20,
"max": 25,
"detail": "Duration 102 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b13m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (HARBIYE and HISTRIA ATLAS) maintained close proximity (min 300m, avg 304m) for 102 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 39m
- Data Points: 25 AIS positions
- Period: 2026-10-27T00:40:36+00:00 to 2026-10-27T07:19:37+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 399,
"points_in_zone": 25,
"first_point": {
"ts": "2026-10-27T00:40:36+00:00",
"lat": 34.7082300000000003592504072003066539764404296875,
"lon": 33.31994499999999703732100897468626499176025390625
},
"last_point": {
"ts": "2026-10-27T07:19:37+00:00",
"lat": 34.68702669999999699257386964745819568634033203125,
"lon": 33.334571699999997917984728701412677764892578125
}
}- Duration: 3h 32m
- Radius: 524 meters
- Data Points: 16 AIS positions
- Centroid: 34.7080, 33.3197
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 523.5,
"duration_minutes": 212.80000000000001136868377216160297393798828125,
"points": 16,
"centroid": {
"lat": 34.70797353750000269201336777769029140472412109375,
"lon": 33.31965936875000267036739387549459934234619140625
},
"bbox": {
"min_lat": 34.7045600000000007412381819449365139007568359375,
"min_lon": 33.315713299999998753264662809669971466064453125,
"max_lat": 34.70824830000000105201252154074609279632568359375,
"max_lon": 33.31999830000000173413354787044227123260498046875
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 18m
- Data Points: 28 AIS positions
- Period: 2026-10-26T23:13:36+00:00 to 2026-10-27T05:31:34+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 378,
"points_in_zone": 28,
"first_point": {
"ts": "2026-10-26T23:13:36+00:00",
"lat": 34.7082199999999971851138980127871036529541015625,
"lon": 33.319940000000002555680111981928348541259765625
},
"last_point": {
"ts": "2026-10-27T05:31:34+00:00",
"lat": 34.685648299999996879705577157437801361083984375,
"lon": 33.33423330000000106565494206734001636505126953125
}
}- Duration: 4h 32m
- Radius: 531 meters
- Data Points: 20 AIS positions
- Centroid: 34.7080, 33.3197
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 531.1000000000000227373675443232059478759765625,
"duration_minutes": 272.8999999999999772626324556767940521240234375,
"points": 20,
"centroid": {
"lat": 34.70802357999999543380909017287194728851318359375,
"lon": 33.3197158299999927066892269067466259002685546875
},
"bbox": {
"min_lat": 34.7045600000000007412381819449365139007568359375,
"min_lon": 33.315713299999998753264662809669971466064453125,
"max_lat": 34.70824830000000105201252154074609279632568359375,
"max_lon": 33.31999830000000173413354787044227123260498046875
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 9m
- Data Points: 30 AIS positions
- Period: 2026-10-26T22:16:39+00:00 to 2026-10-27T04:26:09+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 369.5,
"points_in_zone": 30,
"first_point": {
"ts": "2026-10-26T22:16:39+00:00",
"lat": 34.708228300000001809166860766708850860595703125,
"lon": 33.319923299999999244391801767051219940185546875
},
"last_point": {
"ts": "2026-10-27T04:26:09+00:00",
"lat": 34.68080330000000088830347522161900997161865234375,
"lon": 33.3333999999999974761522025801241397857666015625
}
}- Duration: 5h 29m
- Radius: 535 meters
- Data Points: 23 AIS positions
- Centroid: 34.7080, 33.3197
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 535,
"duration_minutes": 329.8999999999999772626324556767940521240234375,
"points": 23,
"centroid": {
"lat": 34.70804999565217485724133439362049102783203125,
"lon": 33.3197428217391262705859844572842121124267578125
},
"bbox": {
"min_lat": 34.7045600000000007412381819449365139007568359375,
"min_lon": 33.315713299999998753264662809669971466064453125,
"max_lat": 34.70824830000000105201252154074609279632568359375,
"max_lon": 33.31999830000000173413354787044227123260498046875
},
"zone_id": "discovered_039"
}- Minimum Distance: 71 meters
- Average Distance: 73 meters
- Duration: 1h 15m
- Period: 2026-10-26T22:15:23+00:00 to 2026-10-26T23:30:23+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (ZONDAR and HARBIYE) maintained close proximity (min 71m, avg 72m) for 75 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 71m, avg 72m |
| Duration | 15/25 | Duration 75 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±1m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 538005166,
"imo": 9351634,
"name": "ZONDAR",
"flag": "Marshall Is"
},
"vessel_b": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"min_distance_m": 71.2000000000000028421709430404007434844970703125,
"avg_distance_m": 72.5,
"distance_consistency_m": 0.90000000000000002220446049250313080847263336181640625,
"duration_minutes": 75,
"overlap_duration_s": 4500,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T22:15:23+00:00",
"end": "2026-10-26T23:30:23+00:00"
},
"points_count": {
"vessel_a": 4,
"vessel_b": 4
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 85,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 71m, avg 72m"
},
"duration": {
"score": 15,
"max": 25,
"detail": "Duration 75 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b11m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (ZONDAR and HARBIYE) maintained close proximity (min 71m, avg 72m) for 75 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 34m
- Data Points: 26 AIS positions
- Period: 2026-10-26T21:22:39+00:00 to 2026-10-27T03:56:53+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 394.19999999999998863131622783839702606201171875,
"points_in_zone": 26,
"first_point": {
"ts": "2026-10-26T21:22:39+00:00",
"lat": 34.70824999999999960209606797434389591217041015625,
"lon": 33.31993829999999690016920794732868671417236328125
},
"last_point": {
"ts": "2026-10-27T03:56:53+00:00",
"lat": 34.69021000000000043428372009657323360443115234375,
"lon": 33.3020250000000004320099833421409130096435546875
}
}- Duration: 6h 23m
- Radius: 536 meters
- Data Points: 24 AIS positions
- Centroid: 34.7081, 33.3198
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 536.1000000000000227373675443232059478759765625,
"duration_minutes": 383.8999999999999772626324556767940521240234375,
"points": 24,
"centroid": {
"lat": 34.70805832916666844312203465960919857025146484375,
"lon": 33.31975096666666757982966373674571514129638671875
},
"bbox": {
"min_lat": 34.7045600000000007412381819449365139007568359375,
"min_lon": 33.315713299999998753264662809669971466064453125,
"max_lat": 34.70824999999999960209606797434389591217041015625,
"max_lon": 33.31999830000000173413354787044227123260498046875
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 33m
- Data Points: 22 AIS positions
- Period: 2026-10-26T20:55:35+00:00 to 2026-10-27T03:28:38+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 393.1000000000000227373675443232059478759765625,
"points_in_zone": 22,
"first_point": {
"ts": "2026-10-26T20:55:35+00:00",
"lat": 34.7082300000000003592504072003066539764404296875,
"lon": 33.319933300000002418528310954570770263671875
},
"last_point": {
"ts": "2026-10-27T03:28:38+00:00",
"lat": 34.70807669999999944820956443436443805694580078125,
"lon": 33.31996670000000193567757378332316875457763671875
}
}- Duration: 6h 33m
- Radius: 16 meters
- Data Points: 22 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 15.699999999999999289457264239899814128875732421875,
"duration_minutes": 393.1000000000000227373675443232059478759765625,
"points": 22,
"centroid": {
"lat": 34.70821567727272594083842705003917217254638671875,
"lon": 33.3199342363636361596945789642632007598876953125
},
"bbox": {
"min_lat": 34.70807669999999944820956443436443805694580078125,
"min_lon": 33.31990330000000000154614099301397800445556640625,
"max_lat": 34.70824999999999960209606797434389591217041015625,
"max_lon": 33.3199699999999978672349243424832820892333984375
},
"zone_id": "discovered_039"
}- Minimum Distance: 303 meters
- Average Distance: 304 meters
- Duration: 1h 54m
- Period: 2026-10-26T19:36:10+00:00 to 2026-10-26T21:30:08+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (HISTRIA ATLAS and HARBIYE) maintained close proximity (min 303m, avg 304m) for 114 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 10/25 | Min distance 303m, avg 304m |
| Duration | 20/25 | Duration 114 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±1m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea 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": 636019212,
"imo": 9800790,
"name": "HISTRIA ATLAS",
"flag": "Liberia"
},
"vessel_b": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"min_distance_m": 302.8999999999999772626324556767940521240234375,
"avg_distance_m": 303.6000000000000227373675443232059478759765625,
"distance_consistency_m": 0.90000000000000002220446049250313080847263336181640625,
"duration_minutes": 114,
"overlap_duration_s": 6838,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T19:36:10+00:00",
"end": "2026-10-26T21:30:08+00:00"
},
"points_count": {
"vessel_a": 2,
"vessel_b": 2
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 10,
"max": 25,
"detail": "Min distance 303m, avg 304m"
},
"duration": {
"score": 20,
"max": 25,
"detail": "Duration 114 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b11m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (HISTRIA ATLAS and HARBIYE) maintained close proximity (min 303m, avg 304m) for 114 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 34.7091582999999985759131959639489650726318359375,
"lon": 33.3211579000000028827344067394733428955078125
},
"time_window": {
"start_ts": "2026-10-26T19:36:10+00:00",
"end_ts": "2026-10-26T21:30:08+00:00"
},
"searched_at": "2026-10-26T22:45:10.688293+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 39m
- Data Points: 25 AIS positions
- Period: 2026-10-26T19:40:37+00:00 to 2026-10-27T02:19:38+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 399,
"points_in_zone": 25,
"first_point": {
"ts": "2026-10-26T19:40:37+00:00",
"lat": 34.708224999999998772182152606546878814697265625,
"lon": 33.31992670000000344998625223524868488311767578125
},
"last_point": {
"ts": "2026-10-27T02:19:38+00:00",
"lat": 34.7082333000000033962351153604686260223388671875,
"lon": 33.31990330000000000154614099301397800445556640625
}
}- Duration: 6h 39m
- Radius: 3 meters
- Data Points: 25 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 3.100000000000000088817841970012523233890533447265625,
"duration_minutes": 399,
"points": 25,
"centroid": {
"lat": 34.7082282639999988305135047994554042816162109375,
"lon": 33.3199318639999972901932778768241405487060546875
},
"bbox": {
"min_lat": 34.70819999999999794226823723874986171722412109375,
"min_lon": 33.31990330000000000154614099301397800445556640625,
"max_lat": 34.70824999999999960209606797434389591217041015625,
"max_lon": 33.31995330000000166137397172860801219940185546875
},
"zone_id": "discovered_039"
}- Minimum Distance: 72 meters
- Average Distance: 74 meters
- Duration: 1h 12m
- Period: 2026-10-26T18:36:22+00:00 to 2026-10-26T19:48:22+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (ZONDAR and HARBIYE) maintained close proximity (min 72m, avg 74m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 72m, avg 74m |
| Duration | 15/25 | Duration 72 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 538005166,
"imo": 9351634,
"name": "ZONDAR",
"flag": "Marshall Is"
},
"vessel_b": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"min_distance_m": 71.7000000000000028421709430404007434844970703125,
"avg_distance_m": 73.5,
"distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
"duration_minutes": 72,
"overlap_duration_s": 4320,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T18:36:22+00:00",
"end": "2026-10-26T19:48:22+00:00"
},
"points_count": {
"vessel_a": 3,
"vessel_b": 3
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 85,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 72m, avg 74m"
},
"duration": {
"score": 15,
"max": 25,
"detail": "Duration 72 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b12m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (ZONDAR and HARBIYE) maintained close proximity (min 72m, avg 74m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 18m
- Data Points: 26 AIS positions
- Period: 2026-10-26T18:22:32+00:00 to 2026-10-27T00:40:36+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 378.1000000000000227373675443232059478759765625,
"points_in_zone": 26,
"first_point": {
"ts": "2026-10-26T18:22:32+00:00",
"lat": 34.708228300000001809166860766708850860595703125,
"lon": 33.31991000000000013869794202037155628204345703125
},
"last_point": {
"ts": "2026-10-27T00:40:36+00:00",
"lat": 34.7082300000000003592504072003066539764404296875,
"lon": 33.31994499999999703732100897468626499176025390625
}
}- Duration: 6h 18m
- Radius: 4 meters
- Data Points: 26 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 4.4000000000000003552713678800500929355621337890625,
"duration_minutes": 378.1000000000000227373675443232059478759765625,
"points": 26,
"centroid": {
"lat": 34.70822890384615533321266411803662776947021484375,
"lon": 33.3199308307692234620844828896224498748779296875
},
"bbox": {
"min_lat": 34.70819999999999794226823723874986171722412109375,
"min_lon": 33.31991000000000013869794202037155628204345703125,
"max_lat": 34.7082683000000002948581823147833347320556640625,
"max_lon": 33.31995330000000166137397172860801219940185546875
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 33m
- Data Points: 24 AIS positions
- Period: 2026-10-26T17:55:38+00:00 to 2026-10-27T00:28:40+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 393,
"points_in_zone": 24,
"first_point": {
"ts": "2026-10-26T17:55:38+00:00",
"lat": 34.7082367000000004964022082276642322540283203125,
"lon": 33.3199283000000008314600563608109951019287109375
},
"last_point": {
"ts": "2026-10-27T00:28:40+00:00",
"lat": 34.708218299999998635030351579189300537109375,
"lon": 33.31992670000000344998625223524868488311767578125
}
}- Duration: 6h 33m
- Radius: 4 meters
- Data Points: 24 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 4.29999999999999982236431605997495353221893310546875,
"duration_minutes": 393,
"points": 24,
"centroid": {
"lat": 34.70822971666667200452138786204159259796142578125,
"lon": 33.31992999583332704105487209744751453399658203125
},
"bbox": {
"min_lat": 34.7082132999999970479620969854295253753662109375,
"min_lon": 33.31991000000000013869794202037155628204345703125,
"max_lat": 34.7082683000000002948581823147833347320556640625,
"max_lon": 33.31995330000000166137397172860801219940185546875
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 26m
- Data Points: 23 AIS positions
- Period: 2026-10-26T16:55:41+00:00 to 2026-10-26T23:22:34+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 386.8999999999999772626324556767940521240234375,
"points_in_zone": 23,
"first_point": {
"ts": "2026-10-26T16:55:41+00:00",
"lat": 34.70823169999999890933395363390445709228515625,
"lon": 33.319923299999999244391801767051219940185546875
},
"last_point": {
"ts": "2026-10-26T23:22:34+00:00",
"lat": 34.7082132999999970479620969854295253753662109375,
"lon": 33.31992670000000344998625223524868488311767578125
}
}- Duration: 6h 26m
- Radius: 4 meters
- Data Points: 23 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 4.20000000000000017763568394002504646778106689453125,
"duration_minutes": 386.8999999999999772626324556767940521240234375,
"points": 23,
"centroid": {
"lat": 34.7082307956521702863028622232377529144287109375,
"lon": 33.31992977826086388404291938059031963348388671875
},
"bbox": {
"min_lat": 34.7082132999999970479620969854295253753662109375,
"min_lon": 33.31991000000000013869794202037155628204345703125,
"max_lat": 34.7082683000000002948581823147833347320556640625,
"max_lon": 33.31995330000000166137397172860801219940185546875
},
"zone_id": "discovered_039"
}- Minimum Distance: 304 meters
- Average Distance: 305 meters
- Duration: 1h 48m
- Period: 2026-10-26T16:30:08+00:00 to 2026-10-26T18:18:09+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (HISTRIA ATLAS and HARBIYE) maintained close proximity (min 304m, avg 305m) for 108 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 10/25 | Min distance 304m, avg 305m |
| Duration | 20/25 | Duration 108 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea 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": 636019212,
"imo": 9800790,
"name": "HISTRIA ATLAS",
"flag": "Liberia"
},
"vessel_b": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"min_distance_m": 303.8999999999999772626324556767940521240234375,
"avg_distance_m": 305.1000000000000227373675443232059478759765625,
"distance_consistency_m": 1.8000000000000000444089209850062616169452667236328125,
"duration_minutes": 108,
"overlap_duration_s": 6481,
"speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
"speed_a_std": 0.070000000000000006661338147750939242541790008544921875,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T16:30:08+00:00",
"end": "2026-10-26T18:18:09+00:00"
},
"points_count": {
"vessel_a": 2,
"vessel_b": 2
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 10,
"max": 25,
"detail": "Min distance 304m, avg 305m"
},
"duration": {
"score": 20,
"max": 25,
"detail": "Duration 108 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b12m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (HISTRIA ATLAS and HARBIYE) maintained close proximity (min 304m, avg 305m) for 108 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 34.70915420000000040090526454150676727294921875,
"lon": 33.3211557999999996582118910737335681915283203125
},
"time_window": {
"start_ts": "2026-10-26T16:30:08+00:00",
"end_ts": "2026-10-26T18:18:09+00:00"
},
"searched_at": "2026-10-26T20:30:13.578052+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 30m
- Data Points: 20 AIS positions
- Period: 2026-10-26T15:46:34+00:00 to 2026-10-26T22:16:39+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 390.1000000000000227373675443232059478759765625,
"points_in_zone": 20,
"first_point": {
"ts": "2026-10-26T15:46:34+00:00",
"lat": 34.7082582999999971207216731272637844085693359375,
"lon": 33.319933300000002418528310954570770263671875
},
"last_point": {
"ts": "2026-10-26T22:16:39+00:00",
"lat": 34.708228300000001809166860766708850860595703125,
"lon": 33.319923299999999244391801767051219940185546875
}
}- Duration: 6h 30m
- Radius: 4 meters
- Data Points: 20 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 3.70000000000000017763568394002504646778106689453125,
"duration_minutes": 390.1000000000000227373675443232059478759765625,
"points": 20,
"centroid": {
"lat": 34.70823566499999657253283658064901828765869140625,
"lon": 33.31992974500000315174474962987005710601806640625
},
"bbox": {
"min_lat": 34.708218299999998635030351579189300537109375,
"min_lon": 33.31991000000000013869794202037155628204345703125,
"max_lat": 34.7082683000000002948581823147833347320556640625,
"max_lon": 33.31995669999999876154106459580361843109130859375
},
"zone_id": "discovered_039"
}- Minimum Distance: 72 meters
- Average Distance: 73 meters
- Duration: 1h 12m
- Period: 2026-10-26T14:34:37+00:00 to 2026-10-26T15:46:34+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (HARBIYE and ZONDAR) maintained close proximity (min 72m, avg 72m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 72m, avg 72m |
| Duration | 15/25 | Duration 72 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±1m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 538005166,
"imo": 9351634,
"name": "ZONDAR",
"flag": "Marshall Is"
},
"min_distance_m": 71.7000000000000028421709430404007434844970703125,
"avg_distance_m": 72.5,
"distance_consistency_m": 0.8000000000000000444089209850062616169452667236328125,
"duration_minutes": 72,
"overlap_duration_s": 4317,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T14:34:37+00:00",
"end": "2026-10-26T15:46:34+00:00"
},
"points_count": {
"vessel_a": 5,
"vessel_b": 5
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 85,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 72m, avg 72m"
},
"duration": {
"score": 15,
"max": 25,
"detail": "Duration 72 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b11m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (HARBIYE and ZONDAR) maintained close proximity (min 72m, avg 72m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Minimum Distance: 326 meters
- Average Distance: 332 meters
- Duration: 1h 20m
- Period: 2026-10-26T14:25:43+00:00 to 2026-10-26T15:46:34+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (HARBIYE and PURITY) maintained close proximity (min 326m, avg 332m) for 81 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 10/25 | Min distance 326m, avg 332m |
| Duration | 15/25 | Duration 81 minutes |
| Speed Stability | 17/20 | both nearly stationary; stable speeds |
| Distance Consistency | 15/15 | Distance variance ±12m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea 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": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 352004909,
"imo": 9325348,
"name": "PURITY",
"flag": "PANAMA"
},
"min_distance_m": 326,
"avg_distance_m": 332.3999999999999772626324556767940521240234375,
"distance_consistency_m": 11.5999999999999996447286321199499070644378662109375,
"duration_minutes": 80.7999999999999971578290569595992565155029296875,
"overlap_duration_s": 4851,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0.13000000000000000444089209850062616169452667236328125,
"speed_b_std": 0.330000000000000015543122344752191565930843353271484375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0.13000000000000000444089209850062616169452667236328125,
"max_sog": 0.8000000000000000444089209850062616169452667236328125
}
},
"time_window": {
"start": "2026-10-26T14:25:43+00:00",
"end": "2026-10-26T15:46:34+00:00"
},
"points_count": {
"vessel_a": 6,
"vessel_b": 6
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 67,
"components": {
"distance_tightness": {
"score": 10,
"max": 25,
"detail": "Min distance 326m, avg 332m"
},
"duration": {
"score": 15,
"max": 25,
"detail": "Duration 81 minutes"
},
"speed_stability": {
"score": 17,
"max": 20,
"detail": "both nearly stationary; stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b112m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (HARBIYE and PURITY) maintained close proximity (min 326m, avg 332m) for 81 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 34.7089414000000004989487933926284313201904296875,
"lon": 33.32153790000000270765667664818465709686279296875
},
"time_window": {
"start_ts": "2026-10-26T14:25:43+00:00",
"end_ts": "2026-10-26T15:46:34+00:00"
},
"searched_at": "2026-10-26T20:30:01.719743+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 29m
- Data Points: 23 AIS positions
- Period: 2026-10-26T14:25:43+00:00 to 2026-10-26T20:55:35+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 389.8999999999999772626324556767940521240234375,
"points_in_zone": 23,
"first_point": {
"ts": "2026-10-26T14:25:43+00:00",
"lat": 34.70823169999999890933395363390445709228515625,
"lon": 33.31994329999999848723746254108846187591552734375
},
"last_point": {
"ts": "2026-10-26T20:55:35+00:00",
"lat": 34.7082300000000003592504072003066539764404296875,
"lon": 33.319933300000002418528310954570770263671875
}
}- Duration: 6h 29m
- Radius: 4 meters
- Data Points: 23 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 4,
"duration_minutes": 389.8999999999999772626324556767940521240234375,
"points": 23,
"centroid": {
"lat": 34.7082329043478097219121991656720638275146484375,
"lon": 33.3199331130434757142211310565471649169921875
},
"bbox": {
"min_lat": 34.70820499999999952933649183250963687896728515625,
"min_lon": 33.31991000000000013869794202037155628204345703125,
"max_lat": 34.7082683000000002948581823147833347320556640625,
"max_lon": 33.31996000000000179852577275596559047698974609375
},
"zone_id": "discovered_039"
}- Minimum Distance: 326 meters
- Average Distance: 331 meters
- Duration: 2h 14m
- Period: 2026-10-26T13:31:37+00:00 to 2026-10-26T15:46:34+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (HARBIYE and PURITY) maintained close proximity (min 326m, avg 331m) for 135 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 10/25 | Min distance 326m, avg 331m |
| Duration | 25/25 | Duration 135 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±9m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 352004909,
"imo": 9325348,
"name": "PURITY",
"flag": "PANAMA"
},
"min_distance_m": 326,
"avg_distance_m": 331.30000000000001136868377216160297393798828125,
"distance_consistency_m": 9.300000000000000710542735760100185871124267578125,
"duration_minutes": 134.900000000000005684341886080801486968994140625,
"overlap_duration_s": 8097,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0.0899999999999999966693309261245303787291049957275390625,
"speed_b_std": 0.270000000000000017763568394002504646778106689453125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
"max_sog": 0.8000000000000000444089209850062616169452667236328125
}
},
"time_window": {
"start": "2026-10-26T13:31:37+00:00",
"end": "2026-10-26T15:46:34+00:00"
},
"points_count": {
"vessel_a": 9,
"vessel_b": 9
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 80,
"components": {
"distance_tightness": {
"score": 10,
"max": 25,
"detail": "Min distance 326m, avg 331m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 135 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b19m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (HARBIYE and PURITY) maintained close proximity (min 326m, avg 331m) for 135 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 9m
- Data Points: 21 AIS positions
- Period: 2026-10-26T13:31:37+00:00 to 2026-10-26T19:40:37+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 369,
"points_in_zone": 21,
"first_point": {
"ts": "2026-10-26T13:31:37+00:00",
"lat": 34.7082367000000004964022082276642322540283203125,
"lon": 33.319936699999999518695403821766376495361328125
},
"last_point": {
"ts": "2026-10-26T19:40:37+00:00",
"lat": 34.708224999999998772182152606546878814697265625,
"lon": 33.31992670000000344998625223524868488311767578125
}
}- Duration: 6h 9m
- Radius: 4 meters
- Data Points: 21 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 4,
"duration_minutes": 369,
"points": 21,
"centroid": {
"lat": 34.70823334285713457347810617648065090179443359375,
"lon": 33.31993237619047931730165146291255950927734375
},
"bbox": {
"min_lat": 34.70820499999999952933649183250963687896728515625,
"min_lon": 33.31991000000000013869794202037155628204345703125,
"max_lat": 34.7082683000000002948581823147833347320556640625,
"max_lon": 33.31996000000000179852577275596559047698974609375
},
"zone_id": "discovered_039"
}- Minimum Distance: 71 meters
- Average Distance: 74 meters
- Duration: 54 minutes
- Period: 2026-10-26T13:00:23+00:00 to 2026-10-26T13:54:22+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (ZONDAR and HARBIYE) maintained close proximity (min 71m, avg 74m) for 54 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 71m, avg 74m |
| Duration | 10/25 | Duration 54 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 538005166,
"imo": 9351634,
"name": "ZONDAR",
"flag": "Marshall Is"
},
"vessel_b": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"min_distance_m": 70.7999999999999971578290569595992565155029296875,
"avg_distance_m": 73.5,
"distance_consistency_m": 2.100000000000000088817841970012523233890533447265625,
"duration_minutes": 54,
"overlap_duration_s": 3239,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T13:00:23+00:00",
"end": "2026-10-26T13:54:22+00:00"
},
"points_count": {
"vessel_a": 8,
"vessel_b": 8
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 80,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 71m, avg 74m"
},
"duration": {
"score": 10,
"max": 25,
"detail": "Duration 54 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b12m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (ZONDAR and HARBIYE) maintained close proximity (min 71m, avg 74m) for 54 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Minimum Distance: 71 meters
- Average Distance: 74 meters
- Duration: 1h 27m
- Period: 2026-10-26T12:22:32+00:00 to 2026-10-26T13:49:39+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (HARBIYE and ZONDAR) maintained close proximity (min 71m, avg 74m) for 87 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 71m, avg 74m |
| Duration | 15/25 | Duration 87 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea 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": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 538005166,
"imo": 9351634,
"name": "ZONDAR",
"flag": "Marshall Is"
},
"min_distance_m": 70.7999999999999971578290569595992565155029296875,
"avg_distance_m": 73.7999999999999971578290569595992565155029296875,
"distance_consistency_m": 2,
"duration_minutes": 87.099999999999994315658113919198513031005859375,
"overlap_duration_s": 5227,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T12:22:32+00:00",
"end": "2026-10-26T13:49:39+00:00"
},
"points_count": {
"vessel_a": 5,
"vessel_b": 5
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 85,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 71m, avg 74m"
},
"duration": {
"score": 15,
"max": 25,
"detail": "Duration 87 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b12m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (HARBIYE and ZONDAR) maintained close proximity (min 71m, avg 74m) for 87 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 34.70801440000000326335793943144381046295166015625,
"lon": 33.320233999999999241481418721377849578857421875
},
"time_window": {
"start_ts": "2026-10-26T12:22:32+00:00",
"end_ts": "2026-10-26T13:49:39+00:00"
},
"searched_at": "2026-10-26T14:45:02.042080+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 21m
- Data Points: 20 AIS positions
- Period: 2026-10-26T12:22:32+00:00 to 2026-10-26T18:43:45+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 381.19999999999998863131622783839702606201171875,
"points_in_zone": 20,
"first_point": {
"ts": "2026-10-26T12:22:32+00:00",
"lat": 34.70826670000000291338437818922102451324462890625,
"lon": 33.319968299999999317151377908885478973388671875
},
"last_point": {
"ts": "2026-10-26T18:43:45+00:00",
"lat": 34.7082199999999971851138980127871036529541015625,
"lon": 33.319933300000002418528310954570770263671875
}
}- Duration: 6h 21m
- Radius: 5 meters
- Data Points: 20 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 4.70000000000000017763568394002504646778106689453125,
"duration_minutes": 381.19999999999998863131622783839702606201171875,
"points": 20,
"centroid": {
"lat": 34.708234099999998534258338622748851776123046875,
"lon": 33.31993516000000710164385964162647724151611328125
},
"bbox": {
"min_lat": 34.70820499999999952933649183250963687896728515625,
"min_lon": 33.31991000000000013869794202037155628204345703125,
"max_lat": 34.70826670000000291338437818922102451324462890625,
"max_lon": 33.319968299999999317151377908885478973388671875
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 9m
- Data Points: 18 AIS positions
- Period: 2026-10-26T11:01:37+00:00 to 2026-10-26T17:10:38+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 369,
"points_in_zone": 18,
"first_point": {
"ts": "2026-10-26T11:01:37+00:00",
"lat": 34.70821000000000111640474642626941204071044921875,
"lon": 33.3199299999999993815436027944087982177734375
},
"last_point": {
"ts": "2026-10-26T17:10:38+00:00",
"lat": 34.708241700000002083470462821424007415771484375,
"lon": 33.3199249999999977944753482006490230560302734375
}
}- Duration: 6h 9m
- Radius: 4 meters
- Data Points: 18 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 4.29999999999999982236431605997495353221893310546875,
"duration_minutes": 369,
"points": 18,
"centroid": {
"lat": 34.7082370555555570490469108335673809051513671875,
"lon": 33.3199382333333318229051656089723110198974609375
},
"bbox": {
"min_lat": 34.70820499999999952933649183250963687896728515625,
"min_lon": 33.319923299999999244391801767051219940185546875,
"max_lat": 34.70826670000000291338437818922102451324462890625,
"max_lon": 33.319968299999999317151377908885478973388671875
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 27m
- Data Points: 19 AIS positions
- Period: 2026-10-26T10:43:35+00:00 to 2026-10-26T17:10:38+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 387.1000000000000227373675443232059478759765625,
"points_in_zone": 19,
"first_point": {
"ts": "2026-10-26T10:43:35+00:00",
"lat": 34.70823169999999890933395363390445709228515625,
"lon": 33.319933300000002418528310954570770263671875
},
"last_point": {
"ts": "2026-10-26T17:10:38+00:00",
"lat": 34.708241700000002083470462821424007415771484375,
"lon": 33.3199249999999977944753482006490230560302734375
}
}- Duration: 6h 27m
- Radius: 4 meters
- Data Points: 19 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 4.29999999999999982236431605997495353221893310546875,
"duration_minutes": 387.1000000000000227373675443232059478759765625,
"points": 19,
"centroid": {
"lat": 34.70823677368421300570844323374330997467041015625,
"lon": 33.31993797368421184046383132226765155792236328125
},
"bbox": {
"min_lat": 34.70820499999999952933649183250963687896728515625,
"min_lon": 33.319923299999999244391801767051219940185546875,
"max_lat": 34.70826670000000291338437818922102451324462890625,
"max_lon": 33.319968299999999317151377908885478973388671875
},
"zone_id": "discovered_039"
}- Minimum Distance: 325 meters
- Average Distance: 329 meters
- Duration: 2h 15m
- Period: 2026-10-26T10:07:33+00:00 to 2026-10-26T12:22:32+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (PURITY and HARBIYE) maintained close proximity (min 325m, avg 329m) for 135 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 10/25 | Min distance 325m, avg 329m |
| Duration | 25/25 | Duration 135 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±4m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea 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": 352004909,
"imo": 9325348,
"name": "PURITY",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"min_distance_m": 325,
"avg_distance_m": 328.8999999999999772626324556767940521240234375,
"distance_consistency_m": 3.5,
"duration_minutes": 135,
"overlap_duration_s": 8099,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T10:07:33+00:00",
"end": "2026-10-26T12:22:32+00:00"
},
"points_count": {
"vessel_a": 3,
"vessel_b": 3
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 80,
"components": {
"distance_tightness": {
"score": 10,
"max": 25,
"detail": "Min distance 325m, avg 329m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 135 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b14m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (PURITY and HARBIYE) maintained close proximity (min 325m, avg 329m) for 135 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 34.708972799999997960185282863676548004150390625,
"lon": 33.3215071999999992158336681313812732696533203125
},
"time_window": {
"start_ts": "2026-10-26T10:07:33+00:00",
"end_ts": "2026-10-26T12:22:32+00:00"
},
"searched_at": "2026-10-26T16:15:01.987966+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 303 meters
- Average Distance: 304 meters
- Duration: 1h 21m
- Period: 2026-10-26T10:03:08+00:00 to 2026-10-26T11:24:12+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (HISTRIA ATLAS and HARBIYE) maintained close proximity (min 303m, avg 304m) for 81 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 10/25 | Min distance 303m, avg 304m |
| Duration | 15/25 | Duration 81 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±1m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea 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": 636019212,
"imo": 9800790,
"name": "HISTRIA ATLAS",
"flag": "Liberia"
},
"vessel_b": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"min_distance_m": 303.3999999999999772626324556767940521240234375,
"avg_distance_m": 304.19999999999998863131622783839702606201171875,
"distance_consistency_m": 1.100000000000000088817841970012523233890533447265625,
"duration_minutes": 81.099999999999994315658113919198513031005859375,
"overlap_duration_s": 4864,
"speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T10:03:08+00:00",
"end": "2026-10-26T11:24:12+00:00"
},
"points_count": {
"vessel_a": 2,
"vessel_b": 2
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 70,
"components": {
"distance_tightness": {
"score": 10,
"max": 25,
"detail": "Min distance 303m, avg 304m"
},
"duration": {
"score": 15,
"max": 25,
"detail": "Duration 81 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b11m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (HISTRIA ATLAS and HARBIYE) maintained close proximity (min 303m, avg 304m) for 81 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 34.7091520999999971763827488757669925689697265625,
"lon": 33.32116620000000040136001189239323139190673828125
},
"time_window": {
"start_ts": "2026-10-26T10:03:08+00:00",
"end_ts": "2026-10-26T11:24:12+00:00"
},
"searched_at": "2026-10-26T15:45:02.014085+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 72 meters
- Average Distance: 73 meters
- Duration: 42 minutes
- Period: 2026-10-26T10:25:36+00:00 to 2026-10-26T11:07:36+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (HARBIYE and ZONDAR) maintained close proximity (min 72m, avg 73m) for 42 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 72m, avg 73m |
| Duration | 5/25 | Duration 42 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±1m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 538005166,
"imo": 9351634,
"name": "ZONDAR",
"flag": "Marshall Is"
},
"min_distance_m": 71.900000000000005684341886080801486968994140625,
"avg_distance_m": 73,
"distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
"duration_minutes": 42,
"overlap_duration_s": 2520,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T10:25:36+00:00",
"end": "2026-10-26T11:07:36+00:00"
},
"points_count": {
"vessel_a": 5,
"vessel_b": 5
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 72m, avg 73m"
},
"duration": {
"score": 5,
"max": 25,
"detail": "Duration 42 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b11m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (HARBIYE and ZONDAR) maintained close proximity (min 72m, avg 73m) for 42 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Minimum Distance: 72 meters
- Average Distance: 74 meters
- Duration: 1h 15m
- Period: 2026-10-26T09:52:36+00:00 to 2026-10-26T11:07:36+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (HARBIYE and ZONDAR) maintained close proximity (min 72m, avg 74m) for 75 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 72m, avg 74m |
| Duration | 15/25 | Duration 75 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 538005166,
"imo": 9351634,
"name": "ZONDAR",
"flag": "Marshall Is"
},
"min_distance_m": 71.900000000000005684341886080801486968994140625,
"avg_distance_m": 74.099999999999994315658113919198513031005859375,
"distance_consistency_m": 1.8000000000000000444089209850062616169452667236328125,
"duration_minutes": 75,
"overlap_duration_s": 4500,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T09:52:36+00:00",
"end": "2026-10-26T11:07:36+00:00"
},
"points_count": {
"vessel_a": 9,
"vessel_b": 9
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 85,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 72m, avg 74m"
},
"duration": {
"score": 15,
"max": 25,
"detail": "Duration 75 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b12m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (HARBIYE and ZONDAR) maintained close proximity (min 72m, avg 74m) for 75 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Minimum Distance: 325 meters
- Average Distance: 330 meters
- Duration: 2h 39m
- Period: 2026-10-26T09:43:31+00:00 to 2026-10-26T12:22:32+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (PURITY and HARBIYE) maintained close proximity (min 325m, avg 330m) for 159 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 10/25 | Min distance 325m, avg 330m |
| Duration | 25/25 | Duration 159 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±3m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 352004909,
"imo": 9325348,
"name": "PURITY",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"min_distance_m": 325,
"avg_distance_m": 329.80000000000001136868377216160297393798828125,
"distance_consistency_m": 2.70000000000000017763568394002504646778106689453125,
"duration_minutes": 159,
"overlap_duration_s": 9541,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T09:43:31+00:00",
"end": "2026-10-26T12:22:32+00:00"
},
"points_count": {
"vessel_a": 6,
"vessel_b": 6
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 80,
"components": {
"distance_tightness": {
"score": 10,
"max": 25,
"detail": "Min distance 325m, avg 330m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 159 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b13m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (PURITY and HARBIYE) maintained close proximity (min 325m, avg 330m) for 159 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 5h 59m
- Data Points: 22 AIS positions
- Period: 2026-10-26T09:52:36+00:00 to 2026-10-26T15:52:32+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 359.8999999999999772626324556767940521240234375,
"points_in_zone": 22,
"first_point": {
"ts": "2026-10-26T09:52:36+00:00",
"lat": 34.70824499999999801502781338058412075042724609375,
"lon": 33.31992000000000331283445120789110660552978515625
},
"last_point": {
"ts": "2026-10-26T15:52:32+00:00",
"lat": 34.70825669999999973924786900170147418975830078125,
"lon": 33.31995669999999876154106459580361843109130859375
}
}- Duration: 5h 59m
- Radius: 4 meters
- Data Points: 22 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 4.4000000000000003552713678800500929355621337890625,
"duration_minutes": 359.8999999999999772626324556767940521240234375,
"points": 22,
"centroid": {
"lat": 34.7082374454545430353391566313803195953369140625,
"lon": 33.31993658181817608010533149354159832000732421875
},
"bbox": {
"min_lat": 34.70820499999999952933649183250963687896728515625,
"min_lon": 33.31991330000000317568265018053352832794189453125,
"max_lat": 34.70826670000000291338437818922102451324462890625,
"max_lon": 33.319968299999999317151377908885478973388671875
},
"zone_id": "discovered_039"
}- Minimum Distance: 303 meters
- Average Distance: 305 meters
- Duration: 2h 24m
- Period: 2026-10-26T09:00:10+00:00 to 2026-10-26T11:24:12+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (HISTRIA ATLAS and HARBIYE) maintained close proximity (min 303m, avg 305m) for 144 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 10/25 | Min distance 303m, avg 305m |
| Duration | 25/25 | Duration 144 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea 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": 636019212,
"imo": 9800790,
"name": "HISTRIA ATLAS",
"flag": "Liberia"
},
"vessel_b": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"min_distance_m": 303.3999999999999772626324556767940521240234375,
"avg_distance_m": 305.1000000000000227373675443232059478759765625,
"distance_consistency_m": 1.8000000000000000444089209850062616169452667236328125,
"duration_minutes": 144,
"overlap_duration_s": 8642,
"speed_a_avg": 0.070000000000000006661338147750939242541790008544921875,
"speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.070000000000000006661338147750939242541790008544921875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T09:00:10+00:00",
"end": "2026-10-26T11:24:12+00:00"
},
"points_count": {
"vessel_a": 3,
"vessel_b": 3
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 80,
"components": {
"distance_tightness": {
"score": 10,
"max": 25,
"detail": "Min distance 303m, avg 305m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 144 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b12m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (HISTRIA ATLAS and HARBIYE) maintained close proximity (min 303m, avg 305m) for 144 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 34.70915719999999993206074577756226062774658203125,
"lon": 33.321169400000002269734977744519710540771484375
},
"time_window": {
"start_ts": "2026-10-26T09:00:10+00:00",
"end_ts": "2026-10-26T11:24:12+00:00"
},
"searched_at": "2026-10-26T15:15:04.914866+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 328 meters
- Average Distance: 330 meters
- Duration: 1h 45m
- Period: 2026-10-26T08:28:34+00:00 to 2026-10-26T10:13:38+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (HARBIYE and PURITY) maintained close proximity (min 328m, avg 330m) for 105 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 10/25 | Min distance 328m, avg 330m |
| Duration | 20/25 | Duration 105 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 352004909,
"imo": 9325348,
"name": "PURITY",
"flag": "PANAMA"
},
"min_distance_m": 327.80000000000001136868377216160297393798828125,
"avg_distance_m": 329.6000000000000227373675443232059478759765625,
"distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
"duration_minutes": 105.099999999999994315658113919198513031005859375,
"overlap_duration_s": 6304,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T08:28:34+00:00",
"end": "2026-10-26T10:13:38+00:00"
},
"points_count": {
"vessel_a": 12,
"vessel_b": 12
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 10,
"max": 25,
"detail": "Min distance 328m, avg 330m"
},
"duration": {
"score": 20,
"max": 25,
"detail": "Duration 105 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b12m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (HARBIYE and PURITY) maintained close proximity (min 328m, avg 330m) for 105 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Minimum Distance: 72 meters
- Average Distance: 74 meters
- Duration: 3 hours
- Period: 2026-10-26T08:07:33+00:00 to 2026-10-26T11:07:36+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (HARBIYE and ZONDAR) maintained close proximity (min 72m, avg 74m) for 180 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 72m, avg 74m |
| Duration | 25/25 | Duration 180 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 538005166,
"imo": 9351634,
"name": "ZONDAR",
"flag": "Marshall Is"
},
"min_distance_m": 71.5,
"avg_distance_m": 73.7999999999999971578290569595992565155029296875,
"distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
"duration_minutes": 180.099999999999994315658113919198513031005859375,
"overlap_duration_s": 10803,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T08:07:33+00:00",
"end": "2026-10-26T11:07:36+00:00"
},
"points_count": {
"vessel_a": 18,
"vessel_b": 18
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 72m, avg 74m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 180 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b12m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (HARBIYE and ZONDAR) maintained close proximity (min 72m, avg 74m) for 180 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Minimum Distance: 303 meters
- Average Distance: 306 meters
- Duration: 3h 12m
- Period: 2026-10-26T08:12:07+00:00 to 2026-10-26T11:24:12+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (HISTRIA ATLAS and HARBIYE) maintained close proximity (min 303m, avg 306m) for 192 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 10/25 | Min distance 303m, avg 306m |
| Duration | 25/25 | Duration 192 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea 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": 636019212,
"imo": 9800790,
"name": "HISTRIA ATLAS",
"flag": "Liberia"
},
"vessel_b": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"min_distance_m": 303.3999999999999772626324556767940521240234375,
"avg_distance_m": 305.5,
"distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
"duration_minutes": 192.099999999999994315658113919198513031005859375,
"overlap_duration_s": 11525,
"speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T08:12:07+00:00",
"end": "2026-10-26T11:24:12+00:00"
},
"points_count": {
"vessel_a": 5,
"vessel_b": 5
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 80,
"components": {
"distance_tightness": {
"score": 10,
"max": 25,
"detail": "Min distance 303m, avg 306m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 192 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b12m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (HISTRIA ATLAS and HARBIYE) maintained close proximity (min 303m, avg 306m) for 192 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 34.70917200000000235604602494277060031890869140625,
"lon": 33.32116979999999983874658937565982341766357421875
},
"time_window": {
"start_ts": "2026-10-26T08:12:07+00:00",
"end_ts": "2026-10-26T11:24:12+00:00"
},
"searched_at": "2026-10-26T13:45:01.426746+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 36m
- Data Points: 26 AIS positions
- Period: 2026-10-26T08:43:36+00:00 to 2026-10-26T15:19:37+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 396,
"points_in_zone": 26,
"first_point": {
"ts": "2026-10-26T08:43:36+00:00",
"lat": 34.70823829999999787787601235322654247283935546875,
"lon": 33.31994830000000007430571713484823703765869140625
},
"last_point": {
"ts": "2026-10-26T15:19:37+00:00",
"lat": 34.7082367000000004964022082276642322540283203125,
"lon": 33.31996000000000179852577275596559047698974609375
}
}- Duration: 6h 36m
- Radius: 5 meters
- Data Points: 26 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 4.5999999999999996447286321199499070644378662109375,
"duration_minutes": 396,
"points": 26,
"centroid": {
"lat": 34.708234569230768329362035728991031646728515625,
"lon": 33.319936911538462709359009750187397003173828125
},
"bbox": {
"min_lat": 34.70820499999999952933649183250963687896728515625,
"min_lon": 33.31991330000000317568265018053352832794189453125,
"max_lat": 34.70826670000000291338437818922102451324462890625,
"max_lon": 33.319968299999999317151377908885478973388671875
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 33m
- Data Points: 28 AIS positions
- Period: 2026-10-26T07:52:36+00:00 to 2026-10-26T14:25:43+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 393.1000000000000227373675443232059478759765625,
"points_in_zone": 28,
"first_point": {
"ts": "2026-10-26T07:52:36+00:00",
"lat": 34.70824499999999801502781338058412075042724609375,
"lon": 33.319936699999999518695403821766376495361328125
},
"last_point": {
"ts": "2026-10-26T14:25:43+00:00",
"lat": 34.70823169999999890933395363390445709228515625,
"lon": 33.31994329999999848723746254108846187591552734375
}
}- Duration: 6h 33m
- Radius: 4 meters
- Data Points: 28 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 4.29999999999999982236431605997495353221893310546875,
"duration_minutes": 393.1000000000000227373675443232059478759765625,
"points": 28,
"centroid": {
"lat": 34.7082389392857066923170350492000579833984375,
"lon": 33.31993617857142453431151807308197021484375
},
"bbox": {
"min_lat": 34.70821000000000111640474642626941204071044921875,
"min_lon": 33.31991330000000317568265018053352832794189453125,
"max_lat": 34.708273300000001881926436908543109893798828125,
"max_lon": 33.319968299999999317151377908885478973388671875
},
"zone_id": "discovered_039"
}- Minimum Distance: 328 meters
- Average Distance: 328 meters
- Duration: 1h 30m
- Period: 2026-10-26T07:43:30+00:00 to 2026-10-26T09:13:30+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (PURITY and HARBIYE) maintained close proximity (min 328m, avg 328m) for 90 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 10/25 | Min distance 328m, avg 328m |
| Duration | 20/25 | Duration 90 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±0m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 352004909,
"imo": 9325348,
"name": "PURITY",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"min_distance_m": 327.80000000000001136868377216160297393798828125,
"avg_distance_m": 328.1000000000000227373675443232059478759765625,
"distance_consistency_m": 0.299999999999999988897769753748434595763683319091796875,
"duration_minutes": 90,
"overlap_duration_s": 5400,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T07:43:30+00:00",
"end": "2026-10-26T09:13:30+00:00"
},
"points_count": {
"vessel_a": 6,
"vessel_b": 6
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 10,
"max": 25,
"detail": "Min distance 328m, avg 328m"
},
"duration": {
"score": 20,
"max": 25,
"detail": "Duration 90 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b10m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (PURITY and HARBIYE) maintained close proximity (min 328m, avg 328m) for 90 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Minimum Distance: 71 meters
- Average Distance: 74 meters
- Duration: 5h 6m
- Period: 2026-10-26T06:01:32+00:00 to 2026-10-26T11:07:36+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (HARBIYE and ZONDAR) maintained close proximity (min 71m, avg 74m) for 306 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 71m, avg 74m |
| Duration | 25/25 | Duration 306 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 538005166,
"imo": 9351634,
"name": "ZONDAR",
"flag": "Marshall Is"
},
"min_distance_m": 71.2999999999999971578290569595992565155029296875,
"avg_distance_m": 73.7000000000000028421709430404007434844970703125,
"distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
"duration_minutes": 306.1000000000000227373675443232059478759765625,
"overlap_duration_s": 18364,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T06:01:32+00:00",
"end": "2026-10-26T11:07:36+00:00"
},
"points_count": {
"vessel_a": 26,
"vessel_b": 26
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 71m, avg 74m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 306 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b12m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (HARBIYE and ZONDAR) maintained close proximity (min 71m, avg 74m) for 306 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 21m
- Data Points: 25 AIS positions
- Period: 2026-10-26T06:43:33+00:00 to 2026-10-26T13:04:43+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 381.19999999999998863131622783839702606201171875,
"points_in_zone": 25,
"first_point": {
"ts": "2026-10-26T06:43:33+00:00",
"lat": 34.708218299999998635030351579189300537109375,
"lon": 33.3199417000000011057636584155261516571044921875
},
"last_point": {
"ts": "2026-10-26T13:04:43+00:00",
"lat": 34.70824669999999656511135981418192386627197265625,
"lon": 33.3199283000000008314600563608109951019287109375
}
}- Duration: 6h 21m
- Radius: 4 meters
- Data Points: 25 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 4.20000000000000017763568394002504646778106689453125,
"duration_minutes": 381.19999999999998863131622783839702606201171875,
"points": 25,
"centroid": {
"lat": 34.70823927199999303638833225704729557037353515625,
"lon": 33.31993625599999830910746823064982891082763671875
},
"bbox": {
"min_lat": 34.70821000000000111640474642626941204071044921875,
"min_lon": 33.31991330000000317568265018053352832794189453125,
"max_lat": 34.708273300000001881926436908543109893798828125,
"max_lon": 33.319968299999999317151377908885478973388671875
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 26m
- Data Points: 29 AIS positions
- Period: 2026-10-26T05:55:38+00:00 to 2026-10-26T12:22:32+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 386.8999999999999772626324556767940521240234375,
"points_in_zone": 29,
"first_point": {
"ts": "2026-10-26T05:55:38+00:00",
"lat": 34.70823500000000194631866179406642913818359375,
"lon": 33.319933300000002418528310954570770263671875
},
"last_point": {
"ts": "2026-10-26T12:22:32+00:00",
"lat": 34.70826670000000291338437818922102451324462890625,
"lon": 33.319968299999999317151377908885478973388671875
}
}- Duration: 6h 26m
- Radius: 4 meters
- Data Points: 29 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 4.4000000000000003552713678800500929355621337890625,
"duration_minutes": 386.8999999999999772626324556767940521240234375,
"points": 29,
"centroid": {
"lat": 34.70823621034482897584894089959561824798583984375,
"lon": 33.31993700000000302452463074587285518646240234375
},
"bbox": {
"min_lat": 34.70821000000000111640474642626941204071044921875,
"min_lon": 33.31991330000000317568265018053352832794189453125,
"max_lat": 34.708273300000001881926436908543109893798828125,
"max_lon": 33.319968299999999317151377908885478973388671875
},
"zone_id": "discovered_039"
}- Minimum Distance: 326 meters
- Average Distance: 330 meters
- Duration: 1h 18m
- Period: 2026-10-26T04:49:29+00:00 to 2026-10-26T06:07:29+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (PURITY and HARBIYE) maintained close proximity (min 326m, avg 330m) for 78 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 10/25 | Min distance 326m, avg 330m |
| Duration | 15/25 | Duration 78 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea 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": 352004909,
"imo": 9325348,
"name": "PURITY",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"min_distance_m": 326,
"avg_distance_m": 329.5,
"distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
"duration_minutes": 78,
"overlap_duration_s": 4680,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T04:49:29+00:00",
"end": "2026-10-26T06:07:29+00:00"
},
"points_count": {
"vessel_a": 7,
"vessel_b": 7
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 70,
"components": {
"distance_tightness": {
"score": 10,
"max": 25,
"detail": "Min distance 326m, avg 330m"
},
"duration": {
"score": 15,
"max": 25,
"detail": "Duration 78 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b12m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (PURITY and HARBIYE) maintained close proximity (min 326m, avg 330m) for 78 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 34.7089629999999971232682582922279834747314453125,
"lon": 33.32150270000000347181412507779896259307861328125
},
"time_window": {
"start_ts": "2026-10-26T04:49:29+00:00",
"end_ts": "2026-10-26T06:07:29+00:00"
},
"searched_at": "2026-10-26T10:45:03.716562+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 32m
- Data Points: 34 AIS positions
- Period: 2026-10-26T04:43:37+00:00 to 2026-10-26T11:16:33+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 392.8999999999999772626324556767940521240234375,
"points_in_zone": 34,
"first_point": {
"ts": "2026-10-26T04:43:37+00:00",
"lat": 34.70823169999999890933395363390445709228515625,
"lon": 33.319933300000002418528310954570770263671875
},
"last_point": {
"ts": "2026-10-26T11:16:33+00:00",
"lat": 34.70824830000000105201252154074609279632568359375,
"lon": 33.3199283000000008314600563608109951019287109375
}
}- Duration: 6h 32m
- Radius: 4 meters
- Data Points: 34 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 4.4000000000000003552713678800500929355621337890625,
"duration_minutes": 392.8999999999999772626324556767940521240234375,
"points": 34,
"centroid": {
"lat": 34.7082343147058764998291735537350177764892578125,
"lon": 33.31993611470587524081565788947045803070068359375
},
"bbox": {
"min_lat": 34.70821000000000111640474642626941204071044921875,
"min_lon": 33.31991330000000317568265018053352832794189453125,
"max_lat": 34.708273300000001881926436908543109893798828125,
"max_lon": 33.31995330000000166137397172860801219940185546875
},
"zone_id": "discovered_039"
}- Minimum Distance: 72 meters
- Average Distance: 74 meters
- Duration: 36 minutes
- Period: 2026-10-26T04:43:37+00:00 to 2026-10-26T05:19:40+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (HARBIYE and ZONDAR) maintained close proximity (min 72m, avg 74m) for 36 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 72m, avg 74m |
| Duration | 5/25 | Duration 36 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 538005166,
"imo": 9351634,
"name": "ZONDAR",
"flag": "Marshall Is"
},
"min_distance_m": 71.599999999999994315658113919198513031005859375,
"avg_distance_m": 73.7000000000000028421709430404007434844970703125,
"distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
"duration_minutes": 36,
"overlap_duration_s": 2163,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T04:43:37+00:00",
"end": "2026-10-26T05:19:40+00:00"
},
"points_count": {
"vessel_a": 6,
"vessel_b": 6
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 72m, avg 74m"
},
"duration": {
"score": 5,
"max": 25,
"detail": "Duration 36 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b12m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (HARBIYE and ZONDAR) maintained close proximity (min 72m, avg 74m) for 36 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Minimum Distance: 71 meters
- Average Distance: 73 meters
- Duration: 1h 54m
- Period: 2026-10-26T03:25:32+00:00 to 2026-10-26T05:19:40+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (HARBIYE and ZONDAR) maintained close proximity (min 71m, avg 73m) for 114 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 71m, avg 73m |
| Duration | 20/25 | Duration 114 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±1m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 538005166,
"imo": 9351634,
"name": "ZONDAR",
"flag": "Marshall Is"
},
"min_distance_m": 71.400000000000005684341886080801486968994140625,
"avg_distance_m": 73.2000000000000028421709430404007434844970703125,
"distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
"duration_minutes": 114.099999999999994315658113919198513031005859375,
"overlap_duration_s": 6848,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T03:25:32+00:00",
"end": "2026-10-26T05:19:40+00:00"
},
"points_count": {
"vessel_a": 11,
"vessel_b": 11
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 90,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 71m, avg 73m"
},
"duration": {
"score": 20,
"max": 25,
"detail": "Duration 114 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b11m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (HARBIYE and ZONDAR) maintained close proximity (min 71m, avg 73m) for 114 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 30m
- Data Points: 31 AIS positions
- Period: 2026-10-26T03:58:28+00:00 to 2026-10-26T10:28:32+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 390.1000000000000227373675443232059478759765625,
"points_in_zone": 31,
"first_point": {
"ts": "2026-10-26T03:58:28+00:00",
"lat": 34.7082400000000035333869163878262042999267578125,
"lon": 33.319933300000002418528310954570770263671875
},
"last_point": {
"ts": "2026-10-26T10:28:32+00:00",
"lat": 34.70823169999999890933395363390445709228515625,
"lon": 33.31994999999999862438926356844604015350341796875
}
}- Duration: 6h 30m
- Radius: 4 meters
- Data Points: 31 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 4.4000000000000003552713678800500929355621337890625,
"duration_minutes": 390.1000000000000227373675443232059478759765625,
"points": 31,
"centroid": {
"lat": 34.70823424838709314599327626638114452362060546875,
"lon": 33.3199367612903216695485753007233142852783203125
},
"bbox": {
"min_lat": 34.70821000000000111640474642626941204071044921875,
"min_lon": 33.31991330000000317568265018053352832794189453125,
"max_lat": 34.708273300000001881926436908543109893798828125,
"max_lon": 33.31995330000000166137397172860801219940185546875
},
"zone_id": "discovered_039"
}- Minimum Distance: 326 meters
- Average Distance: 329 meters
- Duration: 3h 6m
- Period: 2026-10-26T03:01:29+00:00 to 2026-10-26T06:07:29+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (PURITY and HARBIYE) maintained close proximity (min 326m, avg 329m) for 186 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 10/25 | Min distance 326m, avg 329m |
| Duration | 25/25 | Duration 186 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea 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": 352004909,
"imo": 9325348,
"name": "PURITY",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"min_distance_m": 326,
"avg_distance_m": 329.3999999999999772626324556767940521240234375,
"distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
"duration_minutes": 186,
"overlap_duration_s": 11160,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T03:01:29+00:00",
"end": "2026-10-26T06:07:29+00:00"
},
"points_count": {
"vessel_a": 14,
"vessel_b": 14
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 80,
"components": {
"distance_tightness": {
"score": 10,
"max": 25,
"detail": "Min distance 326m, avg 329m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 186 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b12m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (PURITY and HARBIYE) maintained close proximity (min 326m, avg 329m) for 186 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 34.70896470000000277877916232682764530181884765625,
"lon": 33.32149940000000043482941691763699054718017578125
},
"time_window": {
"start_ts": "2026-10-26T03:01:29+00:00",
"end_ts": "2026-10-26T06:07:29+00:00"
},
"searched_at": "2026-10-26T09:00:15.467867+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 326 meters
- Average Distance: 330 meters
- Duration: 3h 51m
- Period: 2026-10-26T02:16:31+00:00 to 2026-10-26T06:07:29+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (PURITY and HARBIYE) maintained close proximity (min 326m, avg 330m) for 231 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 10/25 | Min distance 326m, avg 330m |
| Duration | 25/25 | Duration 231 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 352004909,
"imo": 9325348,
"name": "PURITY",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"min_distance_m": 326,
"avg_distance_m": 329.6000000000000227373675443232059478759765625,
"distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
"duration_minutes": 231,
"overlap_duration_s": 13858,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T02:16:31+00:00",
"end": "2026-10-26T06:07:29+00:00"
},
"points_count": {
"vessel_a": 16,
"vessel_b": 16
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 80,
"components": {
"distance_tightness": {
"score": 10,
"max": 25,
"detail": "Min distance 326m, avg 330m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 231 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b12m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (PURITY and HARBIYE) maintained close proximity (min 326m, avg 330m) for 231 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 15m
- Data Points: 31 AIS positions
- Period: 2026-10-26T02:55:27+00:00 to 2026-10-26T09:10:41+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 375.19999999999998863131622783839702606201171875,
"points_in_zone": 31,
"first_point": {
"ts": "2026-10-26T02:55:27+00:00",
"lat": 34.70824999999999960209606797434389591217041015625,
"lon": 33.31991169999999868878148845396935939788818359375
},
"last_point": {
"ts": "2026-10-26T09:10:41+00:00",
"lat": 34.70824329999999946494426694698631763458251953125,
"lon": 33.3199283000000008314600563608109951019287109375
}
}- Duration: 6h 15m
- Radius: 4 meters
- Data Points: 31 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 4.29999999999999982236431605997495353221893310546875,
"duration_minutes": 375.19999999999998863131622783839702606201171875,
"points": 31,
"centroid": {
"lat": 34.7082347838709637244392069987952709197998046875,
"lon": 33.319937141935469071540865115821361541748046875
},
"bbox": {
"min_lat": 34.70821000000000111640474642626941204071044921875,
"min_lon": 33.31991169999999868878148845396935939788818359375,
"max_lat": 34.708273300000001881926436908543109893798828125,
"max_lon": 33.31995330000000166137397172860801219940185546875
},
"zone_id": "discovered_039"
}- Minimum Distance: 302 meters
- Average Distance: 303 meters
- Duration: 4h 57m
- Period: 2026-10-26T01:06:07+00:00 to 2026-10-26T06:03:09+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (HISTRIA ATLAS and HARBIYE) maintained close proximity (min 302m, avg 303m) for 297 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 10/25 | Min distance 302m, avg 303m |
| Duration | 25/25 | Duration 297 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea 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": 636019212,
"imo": 9800790,
"name": "HISTRIA ATLAS",
"flag": "Liberia"
},
"vessel_b": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"min_distance_m": 301.80000000000001136868377216160297393798828125,
"avg_distance_m": 303.19999999999998863131622783839702606201171875,
"distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
"duration_minutes": 297,
"overlap_duration_s": 17822,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T01:06:07+00:00",
"end": "2026-10-26T06:03:09+00:00"
},
"points_count": {
"vessel_a": 3,
"vessel_b": 3
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 80,
"components": {
"distance_tightness": {
"score": 10,
"max": 25,
"detail": "Min distance 302m, avg 303m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 297 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b12m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (HISTRIA ATLAS and HARBIYE) maintained close proximity (min 302m, avg 303m) for 297 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 34.70916559999999861929609323851764202117919921875,
"lon": 33.3211450000000013460521586239337921142578125
},
"time_window": {
"start_ts": "2026-10-26T01:06:07+00:00",
"end_ts": "2026-10-26T06:03:09+00:00"
},
"searched_at": "2026-10-26T07:15:04.592768+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 326 meters
- Average Distance: 329 meters
- Duration: 4h 51m
- Period: 2026-10-26T01:16:31+00:00 to 2026-10-26T06:07:29+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (PURITY and HARBIYE) maintained close proximity (min 326m, avg 329m) for 291 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 10/25 | Min distance 326m, avg 329m |
| Duration | 25/25 | Duration 291 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 352004909,
"imo": 9325348,
"name": "PURITY",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"min_distance_m": 326,
"avg_distance_m": 329.30000000000001136868377216160297393798828125,
"distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
"duration_minutes": 291,
"overlap_duration_s": 17458,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T01:16:31+00:00",
"end": "2026-10-26T06:07:29+00:00"
},
"points_count": {
"vessel_a": 21,
"vessel_b": 21
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 80,
"components": {
"distance_tightness": {
"score": 10,
"max": 25,
"detail": "Min distance 326m, avg 329m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 291 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b12m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (PURITY and HARBIYE) maintained close proximity (min 326m, avg 329m) for 291 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 36m
- Data Points: 28 AIS positions
- Period: 2026-10-26T01:52:30+00:00 to 2026-10-26T08:28:34+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 396.1000000000000227373675443232059478759765625,
"points_in_zone": 28,
"first_point": {
"ts": "2026-10-26T01:52:30+00:00",
"lat": 34.70824499999999801502781338058412075042724609375,
"lon": 33.3199350000000009686118573881685733795166015625
},
"last_point": {
"ts": "2026-10-26T08:28:34+00:00",
"lat": 34.708273300000001881926436908543109893798828125,
"lon": 33.3199417000000011057636584155261516571044921875
}
}- Duration: 6h 36m
- Radius: 4 meters
- Data Points: 28 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 4.29999999999999982236431605997495353221893310546875,
"duration_minutes": 396.1000000000000227373675443232059478759765625,
"points": 28,
"centroid": {
"lat": 34.7082348178571322705465718172490596771240234375,
"lon": 33.31993594642856493237559334374964237213134765625
},
"bbox": {
"min_lat": 34.70821000000000111640474642626941204071044921875,
"min_lon": 33.31991169999999868878148845396935939788818359375,
"max_lat": 34.708273300000001881926436908543109893798828125,
"max_lon": 33.31995330000000166137397172860801219940185546875
},
"zone_id": "discovered_039"
}- Minimum Distance: 71 meters
- Average Distance: 74 meters
- Duration: 4h 8m
- Period: 2026-10-26T01:03:25+00:00 to 2026-10-26T05:12:22+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (ZONDAR and HARBIYE) maintained close proximity (min 71m, avg 74m) for 249 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 71m, avg 74m |
| Duration | 25/25 | Duration 249 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 538005166,
"imo": 9351634,
"name": "ZONDAR",
"flag": "Marshall Is"
},
"vessel_b": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"min_distance_m": 71.400000000000005684341886080801486968994140625,
"avg_distance_m": 74.099999999999994315658113919198513031005859375,
"distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
"duration_minutes": 248.900000000000005684341886080801486968994140625,
"overlap_duration_s": 14937,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T01:03:25+00:00",
"end": "2026-10-26T05:12:22+00:00"
},
"points_count": {
"vessel_a": 11,
"vessel_b": 11
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 71m, avg 74m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 249 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b12m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (ZONDAR and HARBIYE) maintained close proximity (min 71m, avg 74m) for 249 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Minimum Distance: 326 meters
- Average Distance: 329 meters
- Duration: 5h 12m
- Period: 2026-10-26T00:55:30+00:00 to 2026-10-26T06:07:29+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (PURITY and HARBIYE) maintained close proximity (min 326m, avg 329m) for 312 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 10/25 | Min distance 326m, avg 329m |
| Duration | 25/25 | Duration 312 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 352004909,
"imo": 9325348,
"name": "PURITY",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"min_distance_m": 326,
"avg_distance_m": 329.19999999999998863131622783839702606201171875,
"distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
"duration_minutes": 312,
"overlap_duration_s": 18719,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T00:55:30+00:00",
"end": "2026-10-26T06:07:29+00:00"
},
"points_count": {
"vessel_a": 23,
"vessel_b": 23
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 80,
"components": {
"distance_tightness": {
"score": 10,
"max": 25,
"detail": "Min distance 326m, avg 329m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 312 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b12m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (PURITY and HARBIYE) maintained close proximity (min 326m, avg 329m) for 312 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Minimum Distance: 299 meters
- Average Distance: 302 meters
- Duration: 48 minutes
- Period: 2026-10-26T00:28:31+00:00 to 2026-10-26T01:16:31+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (HARBIYE and HISTRIA ATLAS) maintained close proximity (min 299m, avg 302m) for 48 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 15/25 | Min distance 299m, avg 302m |
| Duration | 10/25 | Duration 48 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 636019212,
"imo": 9800790,
"name": "HISTRIA ATLAS",
"flag": "Liberia"
},
"min_distance_m": 299.30000000000001136868377216160297393798828125,
"avg_distance_m": 301.8999999999999772626324556767940521240234375,
"distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
"duration_minutes": 48,
"overlap_duration_s": 2880,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
"speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-10-26T00:28:31+00:00",
"end": "2026-10-26T01:16:31+00:00"
},
"points_count": {
"vessel_a": 5,
"vessel_b": 5
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 70,
"components": {
"distance_tightness": {
"score": 15,
"max": 25,
"detail": "Min distance 299m, avg 302m"
},
"duration": {
"score": 10,
"max": 25,
"detail": "Duration 48 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b12m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (HARBIYE and HISTRIA ATLAS) maintained close proximity (min 299m, avg 302m) for 48 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 30m
- Data Points: 31 AIS positions
- Period: 2026-10-26T00:13:33+00:00 to 2026-10-26T06:43:33+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 390,
"points_in_zone": 31,
"first_point": {
"ts": "2026-10-26T00:13:33+00:00",
"lat": 34.7082333000000033962351153604686260223388671875,
"lon": 33.319968299999999317151377908885478973388671875
},
"last_point": {
"ts": "2026-10-26T06:43:33+00:00",
"lat": 34.708218299999998635030351579189300537109375,
"lon": 33.3199417000000011057636584155261516571044921875
}
}- Duration: 6h 30m
- Radius: 4 meters
- Data Points: 31 AIS positions
- Centroid: 34.7082, 33.3199
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 3.79999999999999982236431605997495353221893310546875,
"duration_minutes": 390,
"points": 31,
"centroid": {
"lat": 34.7082345677419397134144674055278301239013671875,
"lon": 33.3199333258064456231295480392873287200927734375
},
"bbox": {
"min_lat": 34.70821000000000111640474642626941204071044921875,
"min_lon": 33.31990830000000158861439558677375316619873046875,
"max_lat": 34.70826170000000132631612359546124935150146484375,
"max_lon": 33.319968299999999317151377908885478973388671875
},
"zone_id": "discovered_039"
}- Minimum Distance: 69 meters
- Average Distance: 72 meters
- Duration: 30 minutes
- Period: 2026-10-26T00:06:23+00:00 to 2026-10-26T00:36:23+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (ZONDAR and HARBIYE) maintained close proximity (min 69m, avg 72m) for 30 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 69m, avg 72m |
| Duration | 5/25 | Duration 30 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea 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": 538005166,
"imo": 9351634,
"name": "ZONDAR",
"flag": "Marshall Is"
},
"vessel_b": {
"mmsi": 352003668,
"imo": 9396787,
"name": "HARBIYE",
"flag": "PANAMA"
},
"min_distance_m": 69.2000000000000028421709430404007434844970703125,
"avg_distance_m": 71.599999999999994315658113919198513031005859375,
"distance_consistency_m": 2.100000000000000088817841970012523233890533447265625,
"duration_minutes": 30,
"overlap_duration_s": 1800,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-10-26T00:06:23+00:00",
"end": "2026-10-26T00:36:23+00:00"
},
"points_count": {
"vessel_a": 3,
"vessel_b": 3
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 69m, avg 72m"
},
"duration": {
"score": 5,
"max": 25,
"detail": "Duration 30 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b12m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (ZONDAR and HARBIYE) maintained close proximity (min 69m, avg 72m) for 30 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 34.70801610000000181344148586504161357879638671875,
"lon": 33.32023970000000190339051187038421630859375
},
"time_window": {
"start_ts": "2026-10-26T00:06:23+00:00",
"end_ts": "2026-10-26T00:36:23+00:00"
},
"searched_at": "2026-10-26T06:45:01.790267+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}Recent Position Data
| Time (UTC) | Lat | Lon | Speed | Course | Zone |
|---|---|---|---|---|---|
| Oct 27 11:33 | 34.6500 | 33.2942 | 10.5 kn | 220.4° | Northern Baltic Sea Surveillance Zone |
| Oct 27 11:31 | 34.6548 | 33.2991 | 10.2 kn | 220.0° | Northern Baltic Sea Surveillance Zone |
| Oct 27 11:28 | 34.6616 | 33.3060 | 9.6 kn | 220.2° | Northern Baltic Sea Surveillance Zone |
| Oct 27 11:25 | 34.6676 | 33.3121 | 9.0 kn | 220.0° | Northern Baltic Sea Surveillance Zone |
| Oct 27 11:18 | 34.6791 | 33.3238 | 7.0 kn | 219.7° | Northern Baltic Sea Surveillance Zone |
| Oct 27 11:08 | 34.6879 | 33.3338 | 0.8 kn | 286.0° | Northern Baltic Sea Surveillance Zone |
| Oct 27 11:04 | 34.6875 | 33.3343 | 0.2 kn | 29.5° | Northern Baltic Sea Surveillance Zone |
| Oct 27 10:43 | 34.6877 | 33.3347 | 0.0 kn | 57.1° | Northern Baltic Sea Surveillance Zone |
| Oct 27 10:34 | 34.6876 | 33.3348 | 0.0 kn | 57.1° | Northern Baltic Sea Surveillance Zone |
| Oct 27 10:25 | 34.6876 | 33.3348 | 0.0 kn | 57.1° | Northern Baltic Sea Surveillance Zone |
| Oct 27 10:10 | 34.6877 | 33.3348 | 0.0 kn | 57.1° | Northern Baltic Sea Surveillance Zone |
| Oct 27 09:52 | 34.6875 | 33.3348 | 0.0 kn | 57.1° | Northern Baltic Sea Surveillance Zone |
| Oct 27 09:31 | 34.6875 | 33.3348 | 0.0 kn | 57.1° | Northern Baltic Sea Surveillance Zone |
| Oct 27 09:19 | 34.6875 | 33.3348 | 0.0 kn | 57.1° | Northern Baltic Sea Surveillance Zone |
| Oct 27 09:13 | 34.6875 | 33.3347 | 0.0 kn | 57.1° | Northern Baltic Sea Surveillance Zone |
| Oct 27 09:10 | 34.6875 | 33.3347 | 0.0 kn | 57.1° | Northern Baltic Sea Surveillance Zone |
| Oct 27 08:19 | 34.6873 | 33.3346 | 0.0 kn | 57.1° | Northern Baltic Sea Surveillance Zone |
| Oct 27 08:13 | 34.6873 | 33.3346 | 0.0 kn | 57.1° | Northern Baltic Sea Surveillance Zone |
| Oct 27 08:04 | 34.6872 | 33.3346 | 0.0 kn | 57.1° | Northern Baltic Sea Surveillance Zone |
| Oct 27 07:37 | 34.6871 | 33.3345 | 0.0 kn | 57.1° | Northern Baltic Sea Surveillance Zone |
Showing 20 of 100 recent positions.
Data Source
Vessel observed through FleetLeaks' AIS monitoring system in zones of interest. Identity and position data derived from AIS broadcasts and public maritime databases.
Disclaimer: AIS data can be spoofed or falsified. Vessel identities should be independently verified before making compliance decisions.
