IMO 9359569
Vessel information
Detected Events (100)
- Zone: Bosphorus/Dardanelles Approach
- Duration: 1h 10m
- Data Points: 3 AIS positions
- Period: 2026-07-22T20:09:43+00:00 to 2026-07-22T21:19:57+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 70.2000000000000028421709430404007434844970703125,
"points_in_zone": 3,
"first_point": {
"ts": "2026-07-22T20:09:43+00:00",
"lat": 40.69852499999999650981408194638788700103759765625,
"lon": 28.67334170000000170830389834009110927581787109375
},
"last_point": {
"ts": "2026-07-22T21:19:57+00:00",
"lat": 40.73288670000000166737663676030933856964111328125,
"lon": 28.684813299999998292832970037125051021575927734375
}
}- Duration: 1h 33m
- Radius: 815 meters
- Data Points: 37 AIS positions
- Centroid: 40.7342, 28.6727
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 815.200000000000045474735088646411895751953125,
"duration_minutes": 93.400000000000005684341886080801486968994140625,
"points": 37,
"centroid": {
"lat": 40.73423400540539063285905285738408565521240234375,
"lon": 28.672747797297301275420977617613971233367919921875
},
"bbox": {
"min_lat": 40.727069999999997662598616443574428558349609375,
"min_lon": 28.670643299999998276916812756098806858062744140625,
"max_lat": 40.74053500000000127556631923653185367584228515625,
"max_lon": 28.675308300000001082707967725582420825958251953125
},
"zone_id": "osint_bosphorus"
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 1h 37m
- Data Points: 38 AIS positions
- Period: 2026-07-22T07:00:04+00:00 to 2026-07-22T08:37:25+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 97.2999999999999971578290569595992565155029296875,
"points_in_zone": 38,
"first_point": {
"ts": "2026-07-22T07:00:04+00:00",
"lat": 40.74111500000000063437255448661744594573974609375,
"lon": 28.675619999999998555040292558260262012481689453125
},
"last_point": {
"ts": "2026-07-22T08:37:25+00:00",
"lat": 40.727069999999997662598616443574428558349609375,
"lon": 28.670643299999998276916812756098806858062744140625
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 2h 37m
- Data Points: 59 AIS positions
- Period: 2026-07-22T06:00:25+00:00 to 2026-07-22T08:37:25+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 157,
"points_in_zone": 59,
"first_point": {
"ts": "2026-07-22T06:00:25+00:00",
"lat": 40.749809999999996534825186245143413543701171875,
"lon": 28.680538299999998486100594163872301578521728515625
},
"last_point": {
"ts": "2026-07-22T08:37:25+00:00",
"lat": 40.727069999999997662598616443574428558349609375,
"lon": 28.670643299999998276916812756098806858062744140625
}
}- Duration: 2h 17m
- Radius: 1,216 meters
- Data Points: 51 AIS positions
- Centroid: 40.7370, 28.6740
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 1216.09999999999990905052982270717620849609375,
"duration_minutes": 137.19999999999998863131622783839702606201171875,
"points": 51,
"centroid": {
"lat": 40.73702457450979608211127924732863903045654296875,
"lon": 28.67397758431371812548604793846607208251953125
},
"bbox": {
"min_lat": 40.727069999999997662598616443574428558349609375,
"min_lon": 28.670643299999998276916812756098806858062744140625,
"max_lat": 40.7473667000000006055415724404156208038330078125,
"max_lon": 28.678713299999998298517311923205852508544921875
},
"zone_id": "osint_bosphorus"
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 3h 31m
- Data Points: 77 AIS positions
- Period: 2026-07-22T05:06:06+00:00 to 2026-07-22T08:37:25+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 211.30000000000001136868377216160297393798828125,
"points_in_zone": 77,
"first_point": {
"ts": "2026-07-22T05:06:06+00:00",
"lat": 40.75785830000000231621015700511634349822998046875,
"lon": 28.687155000000000626414475846104323863983154296875
},
"last_point": {
"ts": "2026-07-22T08:37:25+00:00",
"lat": 40.727069999999997662598616443574428558349609375,
"lon": 28.670643299999998276916812756098806858062744140625
}
}- Duration: 2h 24m
- Radius: 1,245 meters
- Data Points: 54 AIS positions
- Centroid: 40.7408, 28.6757
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 1244.700000000000045474735088646411895751953125,
"duration_minutes": 144.19999999999998863131622783839702606201171875,
"points": 54,
"centroid": {
"lat": 40.74075898148146990251916577108204364776611328125,
"lon": 28.675672133333332425308981328271329402923583984375
},
"bbox": {
"min_lat": 40.73066000000000030922819860279560089111328125,
"min_lon": 28.671508299999999280771589837968349456787109375,
"max_lat": 40.7509950000000031877789297141134738922119140625,
"max_lon": 28.681676700000000579393599764443933963775634765625
},
"zone_id": "osint_bosphorus"
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 3h 49m
- Data Points: 81 AIS positions
- Period: 2026-07-22T04:48:06+00:00 to 2026-07-22T08:37:25+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 229.30000000000001136868377216160297393798828125,
"points_in_zone": 81,
"first_point": {
"ts": "2026-07-22T04:48:06+00:00",
"lat": 40.76100999999999885403667576611042022705078125,
"lon": 28.689260000000000871978045324794948101043701171875
},
"last_point": {
"ts": "2026-07-22T08:37:25+00:00",
"lat": 40.727069999999997662598616443574428558349609375,
"lon": 28.670643299999998276916812756098806858062744140625
}
}- Duration: 2h 13m
- Radius: 1,351 meters
- Data Points: 44 AIS positions
- Centroid: 40.7500, 28.6811
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 1351.09999999999990905052982270717620849609375,
"duration_minutes": 133.900000000000005684341886080801486968994140625,
"points": 44,
"centroid": {
"lat": 40.75001276363635582811184576712548732757568359375,
"lon": 28.681149545454548643874659319408237934112548828125
},
"bbox": {
"min_lat": 40.74053500000000127556631923653185367584228515625,
"min_lon": 28.675308300000001082707967725582420825958251953125,
"max_lat": 40.76061829999999730489435023628175258636474609375,
"max_lon": 28.688990000000000435420588473789393901824951171875
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 444 meters
- Average Distance: 450 meters
- Duration: 56 minutes
- Period: 2026-07-19T23:04:47+00:00 to 2026-07-20T00:00:48+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 444m, avg 450m) for 56 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 Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 444m, avg 450m |
| Duration | 10/25 | Duration 56 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±5m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
🛰️ Satellite Corroboration
Satellite imagery available but requires review
Preview available for manual review
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"vessel_b": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"min_distance_m": 443.69999999999998863131622783839702606201171875,
"avg_distance_m": 449.8999999999999772626324556767940521240234375,
"distance_consistency_m": 5.29999999999999982236431605997495353221893310546875,
"duration_minutes": 56,
"overlap_duration_s": 3361,
"speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_a_std": 0.070000000000000006661338147750939242541790008544921875,
"speed_b_avg": 0.0899999999999999966693309261245303787291049957275390625,
"speed_b_std": 0.08000000000000000166533453693773481063544750213623046875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-07-19T23:04:47+00:00",
"end": "2026-07-20T00:00:48+00:00"
},
"points_count": {
"vessel_a": 9,
"vessel_b": 9
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 60,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 444m, avg 450m"
},
"duration": {
"score": 10,
"max": 25,
"detail": "Duration 56 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b15m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 444m, avg 450m) for 56 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
},
"sar": {
"status": "inconclusive",
"centroid": {
"lat": 40.95895500000000311047188006341457366943359375,
"lon": 28.744161399999999417786966660059988498687744140625
},
"time_window": {
"start_ts": "2026-07-19T23:04:47+00:00",
"end_ts": "2026-07-20T00:00:48+00:00"
},
"searched_at": "2026-07-20T05:45:01.776569+00:00",
"scene_id": "S1D_IW_GRDH_1SDV_20260720T041345_20260720T041410_003752_006BAD_2476_COG",
"scene_datetime": "2026-07-20T04:13:45.759758Z",
"platform": "sentinel-1d",
"bbox": {
"min_lon": 26.11334599999999994679455994628369808197021484375,
"min_lat": 40.40309500000000042518877307884395122528076171875,
"max_lon": 29.581807999999998770590536878444254398345947265625,
"max_lat": 42.3123250000000012960299500264227390289306640625
},
"assets": {
"preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/07\/event_992009_thumbnail_20260720054506.png",
"stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/07\/event_992009_thumbnail_20260720054506.png",
"source": "copernicus_dataspace"
},
"notes": "Preview available for manual review"
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 1h 36m
- Data Points: 16 AIS positions
- Period: 2026-07-19T22:24:49+00:00 to 2026-07-20T00:00:48+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 96,
"points_in_zone": 16,
"first_point": {
"ts": "2026-07-19T22:24:49+00:00",
"lat": 40.96106499999999783767634653486311435699462890625,
"lon": 28.744963299999998440625859075225889682769775390625
},
"last_point": {
"ts": "2026-07-20T00:00:48+00:00",
"lat": 40.96060829999999697292878408916294574737548828125,
"lon": 28.745443300000001585203790455125272274017333984375
}
}- Duration: 1h 36m
- Radius: 51 meters
- Data Points: 16 AIS positions
- Centroid: 40.9609, 28.7450
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 51,
"duration_minutes": 96,
"points": 16,
"centroid": {
"lat": 40.960913756249993866731529124081134796142578125,
"lon": 28.74499028750000206855474971234798431396484375
},
"bbox": {
"min_lat": 40.96060829999999697292878408916294574737548828125,
"min_lon": 28.744853299999999052261046017520129680633544921875,
"max_lat": 40.96108670000000273603291134350001811981201171875,
"max_lon": 28.745443300000001585203790455125272274017333984375
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 444 meters
- Average Distance: 453 meters
- Duration: 1h 24m
- Period: 2026-07-19T22:36:51+00:00 to 2026-07-20T00:00:48+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 444m, avg 453m) for 84 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 444m, avg 453m |
| Duration | 15/25 | Duration 84 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±7m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"vessel_b": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"min_distance_m": 443.69999999999998863131622783839702606201171875,
"avg_distance_m": 452.69999999999998863131622783839702606201171875,
"distance_consistency_m": 6.9000000000000003552713678800500929355621337890625,
"duration_minutes": 84,
"overlap_duration_s": 5037,
"speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
"speed_a_std": 0.070000000000000006661338147750939242541790008544921875,
"speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
"speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-07-19T22:36:51+00:00",
"end": "2026-07-20T00:00:48+00:00"
},
"points_count": {
"vessel_a": 14,
"vessel_b": 14
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 65,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 444m, avg 453m"
},
"duration": {
"score": 15,
"max": 25,
"detail": "Duration 84 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b17m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 444m, avg 453m) for 84 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Minimum Distance: 444 meters
- Average Distance: 455 meters
- Duration: 3 hours
- Period: 2026-07-19T21:00:48+00:00 to 2026-07-20T00:00:48+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 444m, avg 455m) for 180 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 444m, avg 455m |
| Duration | 25/25 | Duration 180 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±8m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
🛰️ 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": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"vessel_b": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"min_distance_m": 443.69999999999998863131622783839702606201171875,
"avg_distance_m": 455,
"distance_consistency_m": 7.70000000000000017763568394002504646778106689453125,
"duration_minutes": 180,
"overlap_duration_s": 10800,
"speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
"speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
"speed_b_avg": 0.0899999999999999966693309261245303787291049957275390625,
"speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-07-19T21:00:48+00:00",
"end": "2026-07-20T00:00:48+00:00"
},
"points_count": {
"vessel_a": 18,
"vessel_b": 18
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 444m, avg 455m"
},
"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 \u00b18m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 444m, avg 455m) for 180 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 40.95901669999999938909240881912410259246826171875,
"lon": 28.744098699999998558496372424997389316558837890625
},
"time_window": {
"start_ts": "2026-07-19T21:00:48+00:00",
"end_ts": "2026-07-20T00:00:48+00:00"
},
"searched_at": "2026-07-20T03:30:04.872125+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 3 hours
- Data Points: 18 AIS positions
- Period: 2026-07-19T21:00:48+00:00 to 2026-07-20T00:00:48+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 180,
"points_in_zone": 18,
"first_point": {
"ts": "2026-07-19T21:00:48+00:00",
"lat": 40.9613650000000006912159733474254608154296875,
"lon": 28.744749999999999801048033987171947956085205078125
},
"last_point": {
"ts": "2026-07-20T00:00:48+00:00",
"lat": 40.96060829999999697292878408916294574737548828125,
"lon": 28.745443300000001585203790455125272274017333984375
}
}- Duration: 3 hours
- Radius: 56 meters
- Data Points: 18 AIS positions
- Centroid: 40.9610, 28.7450
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 55.7999999999999971578290569595992565155029296875,
"duration_minutes": 180,
"points": 18,
"centroid": {
"lat": 40.96095657777777176988820428960025310516357421875,
"lon": 28.7449650722222287413387675769627094268798828125
},
"bbox": {
"min_lat": 40.96060829999999697292878408916294574737548828125,
"min_lon": 28.744749999999999801048033987171947956085205078125,
"max_lat": 40.9613650000000006912159733474254608154296875,
"max_lon": 28.745443300000001585203790455125272274017333984375
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 444 meters
- Average Distance: 455 meters
- Duration: 3h 18m
- Period: 2026-07-19T20:42:48+00:00 to 2026-07-20T00:00:48+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 444m, avg 455m) for 198 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 Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 444m, avg 455m |
| Duration | 25/25 | Duration 198 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±8m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"vessel_b": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"min_distance_m": 443.69999999999998863131622783839702606201171875,
"avg_distance_m": 454.6000000000000227373675443232059478759765625,
"distance_consistency_m": 7.5,
"duration_minutes": 198,
"overlap_duration_s": 11880,
"speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
"speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
"speed_b_avg": 0.0899999999999999966693309261245303787291049957275390625,
"speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-07-19T20:42:48+00:00",
"end": "2026-07-20T00:00:48+00:00"
},
"points_count": {
"vessel_a": 20,
"vessel_b": 20
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 444m, avg 455m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 198 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b18m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 444m, avg 455m) for 198 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 4 hours
- Data Points: 24 AIS positions
- Period: 2026-07-19T20:00:46+00:00 to 2026-07-20T00:00:48+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 240,
"points_in_zone": 24,
"first_point": {
"ts": "2026-07-19T20:00:46+00:00",
"lat": 40.96107500000000101181285572238266468048095703125,
"lon": 28.74504999999999910187398199923336505889892578125
},
"last_point": {
"ts": "2026-07-20T00:00:48+00:00",
"lat": 40.96060829999999697292878408916294574737548828125,
"lon": 28.745443300000001585203790455125272274017333984375
}
}- Duration: 4 hours
- Radius: 59 meters
- Data Points: 24 AIS positions
- Centroid: 40.9610, 28.7450
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 59.10000000000000142108547152020037174224853515625,
"duration_minutes": 240,
"points": 24,
"centroid": {
"lat": 40.96098875000000560930857318453490734100341796875,
"lon": 28.744952766666660437522295978851616382598876953125
},
"bbox": {
"min_lat": 40.96060829999999697292878408916294574737548828125,
"min_lon": 28.744749999999999801048033987171947956085205078125,
"max_lat": 40.9613650000000006912159733474254608154296875,
"max_lon": 28.745443300000001585203790455125272274017333984375
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 482 meters
- Average Distance: 490 meters
- Duration: 42 minutes
- Period: 2026-07-19T19:30:47+00:00 to 2026-07-19T20:12:50+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Low-confidence STS candidate - may warrant review. Two tankers (SAMANYOLU and SERGEY LVOV) maintained close proximity (min 482m, avg 490m) for 42 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 482m, avg 490m |
| Duration | 5/25 | Duration 42 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±7m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
🛰️ 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": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"vessel_b": {
"mmsi": 273295620,
"imo": 9884150,
"name": "SERGEY LVOV",
"flag": "RUSSIA"
},
"min_distance_m": 481.69999999999998863131622783839702606201171875,
"avg_distance_m": 489.80000000000001136868377216160297393798828125,
"distance_consistency_m": 7.20000000000000017763568394002504646778106689453125,
"duration_minutes": 42,
"overlap_duration_s": 2523,
"speed_a_avg": 0.08000000000000000166533453693773481063544750213623046875,
"speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-07-19T19:30:47+00:00",
"end": "2026-07-19T20:12:50+00:00"
},
"points_count": {
"vessel_a": 4,
"vessel_b": 4
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 55,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 482m, avg 490m"
},
"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 \u00b17m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Low-confidence STS candidate - may warrant review. Two tankers (SAMANYOLU and SERGEY LVOV) maintained close proximity (min 482m, avg 490m) for 42 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 40.963133999999996603946783579885959625244140625,
"lon": 28.745805799999999408100848086178302764892578125
},
"time_window": {
"start_ts": "2026-07-19T19:06:23+00:00",
"end_ts": "2026-07-19T20:12:50+00:00"
},
"searched_at": "2026-07-20T01:45:01.819955+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 445 meters
- Average Distance: 454 meters
- Duration: 1h 54m
- Period: 2026-07-19T19:32:01+00:00 to 2026-07-19T21:26:00+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 445m, avg 454m) for 114 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 445m, avg 454m |
| Duration | 20/25 | Duration 114 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±7m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 445.1000000000000227373675443232059478759765625,
"avg_distance_m": 453.69999999999998863131622783839702606201171875,
"distance_consistency_m": 6.5999999999999996447286321199499070644378662109375,
"duration_minutes": 114,
"overlap_duration_s": 6839,
"speed_a_avg": 0.11000000000000000055511151231257827021181583404541015625,
"speed_a_std": 0.11000000000000000055511151231257827021181583404541015625,
"speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
"speed_b_std": 0.08000000000000000166533453693773481063544750213623046875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.11000000000000000055511151231257827021181583404541015625,
"max_sog": 0.299999999999999988897769753748434595763683319091796875
},
"vessel_b": {
"avg_sog": 0.059999999999999997779553950749686919152736663818359375,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-07-19T19:32:01+00:00",
"end": "2026-07-19T21:26:00+00:00"
},
"points_count": {
"vessel_a": 12,
"vessel_b": 12
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 70,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 445m, avg 454m"
},
"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 \u00b17m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 445m, avg 454m) for 114 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 5 hours
- Data Points: 28 AIS positions
- Period: 2026-07-19T19:00:47+00:00 to 2026-07-20T00:00:48+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 300,
"points_in_zone": 28,
"first_point": {
"ts": "2026-07-19T19:00:47+00:00",
"lat": 40.9610832999999985304384608753025531768798828125,
"lon": 28.74500499999999902911440585739910602569580078125
},
"last_point": {
"ts": "2026-07-20T00:00:48+00:00",
"lat": 40.96060829999999697292878408916294574737548828125,
"lon": 28.745443300000001585203790455125272274017333984375
}
}- Duration: 5 hours
- Radius: 60 meters
- Data Points: 28 AIS positions
- Centroid: 40.9610, 28.7449
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 60,
"duration_minutes": 300,
"points": 28,
"centroid": {
"lat": 40.9609966642857301621916121803224086761474609375,
"lon": 28.744947014285710196190848364494740962982177734375
},
"bbox": {
"min_lat": 40.96060829999999697292878408916294574737548828125,
"min_lon": 28.744749999999999801048033987171947956085205078125,
"max_lat": 40.9613650000000006912159733474254608154296875,
"max_lon": 28.745443300000001585203790455125272274017333984375
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 472 meters
- Average Distance: 489 meters
- Duration: 1h 42m
- Period: 2026-07-19T18:30:47+00:00 to 2026-07-19T20:12:50+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SAMANYOLU and SERGEY LVOV) maintained close proximity (min 472m, avg 489m) for 102 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 472m, avg 489m |
| Duration | 20/25 | Duration 102 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: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"vessel_b": {
"mmsi": 273295620,
"imo": 9884150,
"name": "SERGEY LVOV",
"flag": "RUSSIA"
},
"min_distance_m": 472.19999999999998863131622783839702606201171875,
"avg_distance_m": 489.30000000000001136868377216160297393798828125,
"distance_consistency_m": 9.4000000000000003552713678800500929355621337890625,
"duration_minutes": 102,
"overlap_duration_s": 6123,
"speed_a_avg": 0.059999999999999997779553950749686919152736663818359375,
"speed_a_std": 0.070000000000000006661338147750939242541790008544921875,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.059999999999999997779553950749686919152736663818359375,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-07-19T18:30:47+00:00",
"end": "2026-07-19T20:12:50+00:00"
},
"points_count": {
"vessel_a": 9,
"vessel_b": 9
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 70,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 472m, avg 489m"
},
"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 \u00b19m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and SERGEY LVOV) maintained close proximity (min 472m, avg 489m) for 102 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 5h 30m
- Data Points: 31 AIS positions
- Period: 2026-07-19T18:30:47+00:00 to 2026-07-20T00:00:48+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 330,
"points_in_zone": 31,
"first_point": {
"ts": "2026-07-19T18:30:47+00:00",
"lat": 40.96080669999999912533894530497491359710693359375,
"lon": 28.744996700000001510488800704479217529296875
},
"last_point": {
"ts": "2026-07-20T00:00:48+00:00",
"lat": 40.96060829999999697292878408916294574737548828125,
"lon": 28.745443300000001585203790455125272274017333984375
}
}- Duration: 5h 30m
- Radius: 59 meters
- Data Points: 31 AIS positions
- Centroid: 40.9610, 28.7449
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 59,
"duration_minutes": 330,
"points": 31,
"centroid": {
"lat": 40.96098601935484140312837553210556507110595703125,
"lon": 28.744949722580638962199373054318130016326904296875
},
"bbox": {
"min_lat": 40.96060829999999697292878408916294574737548828125,
"min_lon": 28.744749999999999801048033987171947956085205078125,
"max_lat": 40.9613650000000006912159733474254608154296875,
"max_lon": 28.745443300000001585203790455125272274017333984375
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 445 meters
- Average Distance: 456 meters
- Duration: 3h 3m
- Period: 2026-07-19T18:23:02+00:00 to 2026-07-19T21:26:00+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 444m, avg 456m) for 183 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 444m, avg 456m |
| Duration | 25/25 | Duration 183 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: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 444.5,
"avg_distance_m": 456.30000000000001136868377216160297393798828125,
"distance_consistency_m": 8.5999999999999996447286321199499070644378662109375,
"duration_minutes": 183,
"overlap_duration_s": 10978,
"speed_a_avg": 0.14000000000000001332267629550187848508358001708984375,
"speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
"speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
"speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.14000000000000001332267629550187848508358001708984375,
"max_sog": 0.299999999999999988897769753748434595763683319091796875
},
"vessel_b": {
"avg_sog": 0.059999999999999997779553950749686919152736663818359375,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-07-19T18:23:02+00:00",
"end": "2026-07-19T21:26:00+00:00"
},
"points_count": {
"vessel_a": 23,
"vessel_b": 23
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 444m, avg 456m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 183 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b19m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 444m, avg 456m) for 183 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 30m
- Data Points: 36 AIS positions
- Period: 2026-07-19T17:30:49+00:00 to 2026-07-20T00:00:48+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 390,
"points_in_zone": 36,
"first_point": {
"ts": "2026-07-19T17:30:49+00:00",
"lat": 40.9609650000000016234480426646769046783447265625,
"lon": 28.7447982999999993580786394886672496795654296875
},
"last_point": {
"ts": "2026-07-20T00:00:48+00:00",
"lat": 40.96060829999999697292878408916294574737548828125,
"lon": 28.745443300000001585203790455125272274017333984375
}
}- Duration: 6h 30m
- Radius: 59 meters
- Data Points: 36 AIS positions
- Centroid: 40.9610, 28.7449
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 59.2000000000000028421709430404007434844970703125,
"duration_minutes": 390,
"points": 36,
"centroid": {
"lat": 40.9609800444444545064470730721950531005859375,
"lon": 28.7449393888888806714021484367549419403076171875
},
"bbox": {
"min_lat": 40.96060829999999697292878408916294574737548828125,
"min_lon": 28.744749999999999801048033987171947956085205078125,
"max_lat": 40.9613650000000006912159733474254608154296875,
"max_lon": 28.745443300000001585203790455125272274017333984375
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 441 meters
- Average Distance: 457 meters
- Duration: 3h 3m
- Period: 2026-07-19T17:12:48+00:00 to 2026-07-19T20:15:47+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 441m, avg 457m) for 183 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 441m, avg 457m |
| Duration | 25/25 | Duration 183 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±8m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"vessel_b": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"min_distance_m": 440.69999999999998863131622783839702606201171875,
"avg_distance_m": 457,
"distance_consistency_m": 8,
"duration_minutes": 183,
"overlap_duration_s": 10979,
"speed_a_avg": 0.059999999999999997779553950749686919152736663818359375,
"speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
"speed_b_avg": 0.11000000000000000055511151231257827021181583404541015625,
"speed_b_std": 0.08000000000000000166533453693773481063544750213623046875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.059999999999999997779553950749686919152736663818359375,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.11000000000000000055511151231257827021181583404541015625,
"max_sog": 0.299999999999999988897769753748434595763683319091796875
}
},
"time_window": {
"start": "2026-07-19T17:12:48+00:00",
"end": "2026-07-19T20:15:47+00:00"
},
"points_count": {
"vessel_a": 18,
"vessel_b": 18
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 441m, avg 457m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 183 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b18m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 441m, avg 457m) for 183 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 32m
- Data Points: 31 AIS positions
- Period: 2026-07-19T16:22:49+00:00 to 2026-07-19T22:54:51+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 392,
"points_in_zone": 31,
"first_point": {
"ts": "2026-07-19T16:22:49+00:00",
"lat": 40.96056829999999848723746254108846187591552734375,
"lon": 28.745258299999999707097231294028460979461669921875
},
"last_point": {
"ts": "2026-07-19T22:54:51+00:00",
"lat": 40.9608817000000016150806914083659648895263671875,
"lon": 28.744973300000001614762368262745440006256103515625
}
}- Duration: 6h 32m
- Radius: 54 meters
- Data Points: 31 AIS positions
- Centroid: 40.9610, 28.7449
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 53.60000000000000142108547152020037174224853515625,
"duration_minutes": 392,
"points": 31,
"centroid": {
"lat": 40.960979838709675959762535057961940765380859375,
"lon": 28.744925422580646312553653842769563198089599609375
},
"bbox": {
"min_lat": 40.96056829999999848723746254108846187591552734375,
"min_lon": 28.744749999999999801048033987171947956085205078125,
"max_lat": 40.9613650000000006912159733474254608154296875,
"max_lon": 28.74526829999999932852006168104708194732666015625
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 445 meters
- Average Distance: 459 meters
- Duration: 1h 16m
- Period: 2026-07-19T15:06:46+00:00 to 2026-07-19T16:22:49+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.2 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 445m, avg 459m) for 76 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 445m, avg 459m |
| Duration | 15/25 | Duration 76 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±11m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
🛰️ 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": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"vessel_b": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"min_distance_m": 444.69999999999998863131622783839702606201171875,
"avg_distance_m": 459.3999999999999772626324556767940521240234375,
"distance_consistency_m": 11,
"duration_minutes": 76,
"overlap_duration_s": 4563,
"speed_a_avg": 0.0899999999999999966693309261245303787291049957275390625,
"speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
"speed_b_avg": 0.1600000000000000033306690738754696212708950042724609375,
"speed_b_std": 0.11000000000000000055511151231257827021181583404541015625,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0.1600000000000000033306690738754696212708950042724609375,
"max_sog": 0.299999999999999988897769753748434595763683319091796875
}
},
"time_window": {
"start": "2026-07-19T15:06:46+00:00",
"end": "2026-07-19T16:22:49+00:00"
},
"points_count": {
"vessel_a": 7,
"vessel_b": 7
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 65,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 445m, avg 459m"
},
"duration": {
"score": 15,
"max": 25,
"detail": "Duration 76 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b111m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 445m, avg 459m) for 76 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 40.9586886000000021113010006956756114959716796875,
"lon": 28.744314700000000328827809426002204418182373046875
},
"time_window": {
"start_ts": "2026-07-19T15:06:46+00:00",
"end_ts": "2026-07-19T16:22:49+00:00"
},
"searched_at": "2026-07-19T21:15:01.857930+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 34m
- Data Points: 30 AIS positions
- Period: 2026-07-19T15:54:50+00:00 to 2026-07-19T22:28:52+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 394,
"points_in_zone": 30,
"first_point": {
"ts": "2026-07-19T15:54:50+00:00",
"lat": 40.9606466999999980771463015116751194000244140625,
"lon": 28.7451267000000001416992745362222194671630859375
},
"last_point": {
"ts": "2026-07-19T22:28:52+00:00",
"lat": 40.96102669999999790206857142038643360137939453125,
"lon": 28.744853299999999052261046017520129680633544921875
}
}- Duration: 6h 34m
- Radius: 50 meters
- Data Points: 30 AIS positions
- Centroid: 40.9609, 28.7450
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 49.5,
"duration_minutes": 394,
"points": 30,
"centroid": {
"lat": 40.96094799666666830262329312972724437713623046875,
"lon": 28.744956386666668635143651044927537441253662109375
},
"bbox": {
"min_lat": 40.96056829999999848723746254108846187591552734375,
"min_lon": 28.744749999999999801048033987171947956085205078125,
"max_lat": 40.9613650000000006912159733474254608154296875,
"max_lon": 28.745311699999998467092154896818101406097412109375
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 445 meters
- Average Distance: 463 meters
- Duration: 1h 30m
- Period: 2026-07-19T14:52:50+00:00 to 2026-07-19T16:22:49+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 445m, avg 463m) for 90 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 445m, avg 463m |
| Duration | 20/25 | Duration 90 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±13m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"vessel_b": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"min_distance_m": 444.69999999999998863131622783839702606201171875,
"avg_distance_m": 463.19999999999998863131622783839702606201171875,
"distance_consistency_m": 13,
"duration_minutes": 90,
"overlap_duration_s": 5399,
"speed_a_avg": 0.0899999999999999966693309261245303787291049957275390625,
"speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
"speed_b_avg": 0.11999999999999999555910790149937383830547332763671875,
"speed_b_std": 0.11999999999999999555910790149937383830547332763671875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0.11999999999999999555910790149937383830547332763671875,
"max_sog": 0.299999999999999988897769753748434595763683319091796875
}
},
"time_window": {
"start": "2026-07-19T14:52:50+00:00",
"end": "2026-07-19T16:22:49+00:00"
},
"points_count": {
"vessel_a": 9,
"vessel_b": 9
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 70,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 445m, avg 463m"
},
"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 \u00b113m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 445m, avg 463m) for 90 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 32m
- Data Points: 33 AIS positions
- Period: 2026-07-19T14:52:50+00:00 to 2026-07-19T21:24:50+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 392,
"points_in_zone": 33,
"first_point": {
"ts": "2026-07-19T14:52:50+00:00",
"lat": 40.96098330000000231621015700511634349822998046875,
"lon": 28.745051700000001204671207233332097530364990234375
},
"last_point": {
"ts": "2026-07-19T21:24:50+00:00",
"lat": 40.96123330000000350992195308208465576171875,
"lon": 28.744776699999999181045495788566768169403076171875
}
}- Duration: 6h 32m
- Radius: 53 meters
- Data Points: 33 AIS positions
- Centroid: 40.9609, 28.7450
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 53.39999999999999857891452847979962825775146484375,
"duration_minutes": 392,
"points": 33,
"centroid": {
"lat": 40.96091666060607394683756865561008453369140625,
"lon": 28.74498030606060439140492235310375690460205078125
},
"bbox": {
"min_lat": 40.96056829999999848723746254108846187591552734375,
"min_lon": 28.744749999999999801048033987171947956085205078125,
"max_lat": 40.9613650000000006912159733474254608154296875,
"max_lon": 28.745311699999998467092154896818101406097412109375
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 445 meters
- Average Distance: 458 meters
- Duration: 3h 6m
- Period: 2026-07-19T13:07:57+00:00 to 2026-07-19T16:14:00+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 445m, avg 458m) for 186 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 445m, avg 458m |
| Duration | 25/25 | Duration 186 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±8m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 445.1000000000000227373675443232059478759765625,
"avg_distance_m": 458,
"distance_consistency_m": 8.199999999999999289457264239899814128875732421875,
"duration_minutes": 186.099999999999994315658113919198513031005859375,
"overlap_duration_s": 11163,
"speed_a_avg": 0.11999999999999999555910790149937383830547332763671875,
"speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
"speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
"speed_b_std": 0.059999999999999997779553950749686919152736663818359375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.11999999999999999555910790149937383830547332763671875,
"max_sog": 0.299999999999999988897769753748434595763683319091796875
},
"vessel_b": {
"avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-07-19T13:07:57+00:00",
"end": "2026-07-19T16:14:00+00:00"
},
"points_count": {
"vessel_a": 13,
"vessel_b": 13
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 445m, avg 458m"
},
"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 \u00b18m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 445m, avg 458m) for 186 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Minimum Distance: 490 meters
- Average Distance: 495 meters
- Duration: 5h 45m
- Period: 2026-07-19T13:06:27+00:00 to 2026-07-19T18:52:24+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 490m, avg 495m) for 346 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 490m, avg 495m |
| Duration | 25/25 | Duration 346 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: Bosphorus/Dardanelles Approach |
🛰️ 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": 273295620,
"imo": 9884150,
"name": "SERGEY LVOV",
"flag": "RUSSIA"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 490.3999999999999772626324556767940521240234375,
"avg_distance_m": 494.8999999999999772626324556767940521240234375,
"distance_consistency_m": 3.29999999999999982236431605997495353221893310546875,
"duration_minutes": 345.8999999999999772626324556767940521240234375,
"overlap_duration_s": 20757,
"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": "2026-07-19T13:06:27+00:00",
"end": "2026-07-19T18:52:24+00:00"
},
"points_count": {
"vessel_a": 5,
"vessel_b": 5
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 490m, avg 495m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 346 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: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 490m, avg 495m) for 346 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 40.96290119999999745914465165697038173675537109375,
"lon": 28.745940799999999626379576511681079864501953125
},
"time_window": {
"start_ts": "2026-07-19T13:06:27+00:00",
"end_ts": "2026-07-19T18:52:24+00:00"
},
"searched_at": "2026-07-19T19:15:01.886723+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 34m
- Data Points: 33 AIS positions
- Period: 2026-07-19T13:54:52+00:00 to 2026-07-19T20:29:47+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 394.8999999999999772626324556767940521240234375,
"points_in_zone": 33,
"first_point": {
"ts": "2026-07-19T13:54:52+00:00",
"lat": 40.96074999999999732835931354202330112457275390625,
"lon": 28.745026700000000374757291865535080432891845703125
},
"last_point": {
"ts": "2026-07-19T20:29:47+00:00",
"lat": 40.9610449999999985948306857608258724212646484375,
"lon": 28.744855000000001155058271251618862152099609375
}
}- Duration: 6h 34m
- Radius: 41 meters
- Data Points: 33 AIS positions
- Centroid: 40.9609, 28.7450
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 40.60000000000000142108547152020037174224853515625,
"duration_minutes": 394.8999999999999772626324556767940521240234375,
"points": 33,
"centroid": {
"lat": 40.960863124242422372844885103404521942138671875,
"lon": 28.745006263636366128366717020981013774871826171875
},
"bbox": {
"min_lat": 40.96056829999999848723746254108846187591552734375,
"min_lon": 28.7447982999999993580786394886672496795654296875,
"max_lat": 40.9610832999999985304384608753025531768798828125,
"max_lon": 28.745311699999998467092154896818101406097412109375
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 445 meters
- Average Distance: 458 meters
- Duration: 3h 33m
- Period: 2026-07-19T12:41:02+00:00 to 2026-07-19T16:14:00+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 445m, avg 458m) for 213 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 445m, avg 458m |
| Duration | 25/25 | Duration 213 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±10m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
🛰️ 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": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 445.1000000000000227373675443232059478759765625,
"avg_distance_m": 458.30000000000001136868377216160297393798828125,
"distance_consistency_m": 9.5,
"duration_minutes": 213,
"overlap_duration_s": 12778,
"speed_a_avg": 0.11000000000000000055511151231257827021181583404541015625,
"speed_a_std": 0.0899999999999999966693309261245303787291049957275390625,
"speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
"speed_b_std": 0.059999999999999997779553950749686919152736663818359375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.11000000000000000055511151231257827021181583404541015625,
"max_sog": 0.299999999999999988897769753748434595763683319091796875
},
"vessel_b": {
"avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-07-19T12:41:02+00:00",
"end": "2026-07-19T16:14:00+00:00"
},
"points_count": {
"vessel_a": 15,
"vessel_b": 15
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 445m, avg 458m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 213 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b110m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 445m, avg 458m) for 213 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 40.9587322000000000343788997270166873931884765625,
"lon": 28.744267799999999368765202234499156475067138671875
},
"time_window": {
"start_ts": "2026-07-19T12:41:02+00:00",
"end_ts": "2026-07-19T16:14:00+00:00"
},
"searched_at": "2026-07-19T19:15:08.164864+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 471 meters
- Average Distance: 482 meters
- Duration: 34 minutes
- Period: 2026-07-19T12:32:24+00:00 to 2026-07-19T13:06:27+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Low-confidence STS candidate - may warrant review. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 471m, avg 482m) for 34 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 471m, avg 482m |
| Duration | 5/25 | Duration 34 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±15m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
🛰️ 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": 273295620,
"imo": 9884150,
"name": "SERGEY LVOV",
"flag": "RUSSIA"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 471.3999999999999772626324556767940521240234375,
"avg_distance_m": 482.1000000000000227373675443232059478759765625,
"distance_consistency_m": 15.199999999999999289457264239899814128875732421875,
"duration_minutes": 34,
"overlap_duration_s": 2043,
"speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
"speed_a_std": 0.14000000000000001332267629550187848508358001708984375,
"speed_b_avg": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-07-19T12:32:24+00:00",
"end": "2026-07-19T13:06:27+00:00"
},
"points_count": {
"vessel_a": 2,
"vessel_b": 2
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 55,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 471m, avg 482m"
},
"duration": {
"score": 5,
"max": 25,
"detail": "Duration 34 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b115m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Low-confidence STS candidate - may warrant review. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 471m, avg 482m) for 34 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 40.9627746000000030335286282934248447418212890625,
"lon": 28.746044200000000046202330850064754486083984375
},
"time_window": {
"start_ts": "2026-07-19T12:32:24+00:00",
"end_ts": "2026-07-19T13:06:27+00:00"
},
"searched_at": "2026-07-19T16:00:07.428809+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 23m
- Data Points: 33 AIS positions
- Period: 2026-07-19T12:40:50+00:00 to 2026-07-19T19:04:47+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 383.8999999999999772626324556767940521240234375,
"points_in_zone": 33,
"first_point": {
"ts": "2026-07-19T12:40:50+00:00",
"lat": 40.96083829999999892379491939209401607513427734375,
"lon": 28.745000000000000994759830064140260219573974609375
},
"last_point": {
"ts": "2026-07-19T19:04:47+00:00",
"lat": 40.96101829999999921483322395943105220794677734375,
"lon": 28.74492169999999902074705460108816623687744140625
}
}- Duration: 6h 23m
- Radius: 36 meters
- Data Points: 33 AIS positions
- Centroid: 40.9608, 28.7450
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 36.39999999999999857891452847979962825775146484375,
"duration_minutes": 383.8999999999999772626324556767940521240234375,
"points": 33,
"centroid": {
"lat": 40.9608232787878705494222231209278106689453125,
"lon": 28.74501954545454651679392554797232151031494140625
},
"bbox": {
"min_lat": 40.96056829999999848723746254108846187591552734375,
"min_lon": 28.7447982999999993580786394886672496795654296875,
"max_lat": 40.9610832999999985304384608753025531768798828125,
"max_lon": 28.745311699999998467092154896818101406097412109375
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 445 meters
- Average Distance: 462 meters
- Duration: 5h 11m
- Period: 2026-07-19T11:02:03+00:00 to 2026-07-19T16:14:00+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 445m, avg 462m) for 312 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 445m, avg 462m |
| Duration | 25/25 | Duration 312 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±10m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
🛰️ 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": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 445.1000000000000227373675443232059478759765625,
"avg_distance_m": 462.19999999999998863131622783839702606201171875,
"distance_consistency_m": 10.0999999999999996447286321199499070644378662109375,
"duration_minutes": 311.8999999999999772626324556767940521240234375,
"overlap_duration_s": 18717,
"speed_a_avg": 0.13000000000000000444089209850062616169452667236328125,
"speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
"speed_b_avg": 0.14000000000000001332267629550187848508358001708984375,
"speed_b_std": 0.1000000000000000055511151231257827021181583404541015625,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.13000000000000000444089209850062616169452667236328125,
"max_sog": 0.40000000000000002220446049250313080847263336181640625
},
"vessel_b": {
"avg_sog": 0.14000000000000001332267629550187848508358001708984375,
"max_sog": 0.299999999999999988897769753748434595763683319091796875
}
},
"time_window": {
"start": "2026-07-19T11:02:03+00:00",
"end": "2026-07-19T16:14:00+00:00"
},
"points_count": {
"vessel_a": 24,
"vessel_b": 24
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 445m, avg 462m"
},
"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 \u00b110m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 445m, avg 462m) for 312 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 40.95873590000000064037521951831877231597900390625,
"lon": 28.744280100000000999216354102827608585357666015625
},
"time_window": {
"start_ts": "2026-07-19T11:02:03+00:00",
"end_ts": "2026-07-19T16:14:00+00:00"
},
"searched_at": "2026-07-19T17:15:01.607519+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 29m
- Data Points: 36 AIS positions
- Period: 2026-07-19T11:24:50+00:00 to 2026-07-19T17:54:47+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 389.8999999999999772626324556767940521240234375,
"points_in_zone": 36,
"first_point": {
"ts": "2026-07-19T11:24:50+00:00",
"lat": 40.960686699999996562837623059749603271484375,
"lon": 28.745259999999998257180777727626264095306396484375
},
"last_point": {
"ts": "2026-07-19T17:54:47+00:00",
"lat": 40.960828300000002855085767805576324462890625,
"lon": 28.744948300000000784848452894948422908782958984375
}
}- Duration: 6h 29m
- Radius: 45 meters
- Data Points: 36 AIS positions
- Centroid: 40.9608, 28.7450
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 45.2000000000000028421709430404007434844970703125,
"duration_minutes": 389.8999999999999772626324556767940521240234375,
"points": 36,
"centroid": {
"lat": 40.960818516666648747559520415961742401123046875,
"lon": 28.74502643611111096788590657524764537811279296875
},
"bbox": {
"min_lat": 40.96056829999999848723746254108846187591552734375,
"min_lon": 28.744751699999998351131580420769751071929931640625,
"max_lat": 40.96116829999999708888935856521129608154296875,
"max_lon": 28.745354999999999989768184605054557323455810546875
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 445 meters
- Average Distance: 464 meters
- Duration: 5h 24m
- Period: 2026-07-19T10:43:57+00:00 to 2026-07-19T16:08:02+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 445m, avg 464m) for 324 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 445m, avg 464m |
| Duration | 25/25 | Duration 324 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±11m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 445.1000000000000227373675443232059478759765625,
"avg_distance_m": 463.6000000000000227373675443232059478759765625,
"distance_consistency_m": 11.199999999999999289457264239899814128875732421875,
"duration_minutes": 324.1000000000000227373675443232059478759765625,
"overlap_duration_s": 19445,
"speed_a_avg": 0.13000000000000000444089209850062616169452667236328125,
"speed_a_std": 0.11000000000000000055511151231257827021181583404541015625,
"speed_b_avg": 0.13000000000000000444089209850062616169452667236328125,
"speed_b_std": 0.11000000000000000055511151231257827021181583404541015625,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.13000000000000000444089209850062616169452667236328125,
"max_sog": 0.40000000000000002220446049250313080847263336181640625
},
"vessel_b": {
"avg_sog": 0.13000000000000000444089209850062616169452667236328125,
"max_sog": 0.299999999999999988897769753748434595763683319091796875
}
},
"time_window": {
"start": "2026-07-19T10:43:57+00:00",
"end": "2026-07-19T16:08:02+00:00"
},
"points_count": {
"vessel_a": 25,
"vessel_b": 25
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 445m, avg 464m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 324 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b111m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 445m, avg 464m) for 324 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 29m
- Data Points: 35 AIS positions
- Period: 2026-07-19T10:54:51+00:00 to 2026-07-19T17:24:48+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 389.8999999999999772626324556767940521240234375,
"points_in_zone": 35,
"first_point": {
"ts": "2026-07-19T10:54:51+00:00",
"lat": 40.96053330000000158861439558677375316619873046875,
"lon": 28.745464999999999378132997662760317325592041015625
},
"last_point": {
"ts": "2026-07-19T17:24:48+00:00",
"lat": 40.96094000000000079353412729687988758087158203125,
"lon": 28.744858300000000639329300611279904842376708984375
}
}- Duration: 6h 29m
- Radius: 50 meters
- Data Points: 35 AIS positions
- Centroid: 40.9608, 28.7451
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 50.2999999999999971578290569595992565155029296875,
"duration_minutes": 389.8999999999999772626324556767940521240234375,
"points": 35,
"centroid": {
"lat": 40.96078442571427302709707873873412609100341796875,
"lon": 28.74506895428572050832372042350471019744873046875
},
"bbox": {
"min_lat": 40.96053330000000158861439558677375316619873046875,
"min_lon": 28.744751699999998351131580420769751071929931640625,
"max_lat": 40.96116829999999708888935856521129608154296875,
"max_lon": 28.745464999999999378132997662760317325592041015625
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 469 meters
- Average Distance: 478 meters
- Duration: 3h 19m
- Period: 2026-07-19T09:47:24+00:00 to 2026-07-19T13:06:27+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 469m, avg 478m) for 199 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 469m, avg 478m |
| Duration | 25/25 | Duration 199 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±13m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 273295620,
"imo": 9884150,
"name": "SERGEY LVOV",
"flag": "RUSSIA"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 469.3999999999999772626324556767940521240234375,
"avg_distance_m": 477.8999999999999772626324556767940521240234375,
"distance_consistency_m": 13,
"duration_minutes": 199.099999999999994315658113919198513031005859375,
"overlap_duration_s": 11943,
"speed_a_avg": 0.070000000000000006661338147750939242541790008544921875,
"speed_a_std": 0.11999999999999999555910790149937383830547332763671875,
"speed_b_avg": 0.070000000000000006661338147750939242541790008544921875,
"speed_b_std": 0.059999999999999997779553950749686919152736663818359375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.070000000000000006661338147750939242541790008544921875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.070000000000000006661338147750939242541790008544921875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-07-19T09:47:24+00:00",
"end": "2026-07-19T13:06:27+00:00"
},
"points_count": {
"vessel_a": 3,
"vessel_b": 3
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 469m, avg 478m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 199 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b113m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 469m, avg 478m) for 199 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Minimum Distance: 417 meters
- Average Distance: 463 meters
- Duration: 2h 44m
- Period: 2026-07-19T09:20:00+00:00 to 2026-07-19T12:04:50+00:00
- Vessel A Avg Speed: 0.2 knots
- Vessel B Avg Speed: 0.2 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 417m, avg 463m) for 165 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 417m, avg 463m |
| Duration | 25/25 | Duration 165 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±16m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"vessel_b": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"min_distance_m": 417.3999999999999772626324556767940521240234375,
"avg_distance_m": 463,
"distance_consistency_m": 15.699999999999999289457264239899814128875732421875,
"duration_minutes": 164.80000000000001136868377216160297393798828125,
"overlap_duration_s": 9890,
"speed_a_avg": 0.1600000000000000033306690738754696212708950042724609375,
"speed_a_std": 0.11000000000000000055511151231257827021181583404541015625,
"speed_b_avg": 0.179999999999999993338661852249060757458209991455078125,
"speed_b_std": 0.14000000000000001332267629550187848508358001708984375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.1600000000000000033306690738754696212708950042724609375,
"max_sog": 0.299999999999999988897769753748434595763683319091796875
},
"vessel_b": {
"avg_sog": 0.179999999999999993338661852249060757458209991455078125,
"max_sog": 0.40000000000000002220446049250313080847263336181640625
}
},
"time_window": {
"start": "2026-07-19T09:20:00+00:00",
"end": "2026-07-19T12:04:50+00:00"
},
"points_count": {
"vessel_a": 17,
"vessel_b": 17
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 417m, avg 463m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 165 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b116m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 417m, avg 463m) for 165 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 30m
- Data Points: 37 AIS positions
- Period: 2026-07-19T09:53:55+00:00 to 2026-07-19T16:24:50+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 390.8999999999999772626324556767940521240234375,
"points_in_zone": 37,
"first_point": {
"ts": "2026-07-19T09:53:55+00:00",
"lat": 40.9609166999999985137037583626806735992431640625,
"lon": 28.74500330000000047903085942380130290985107421875
},
"last_point": {
"ts": "2026-07-19T16:24:50+00:00",
"lat": 40.96059170000000193567757378332316875457763671875,
"lon": 28.74526829999999932852006168104708194732666015625
}
}- Duration: 6h 30m
- Radius: 53 meters
- Data Points: 37 AIS positions
- Centroid: 40.9608, 28.7451
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 53,
"duration_minutes": 390.8999999999999772626324556767940521240234375,
"points": 37,
"centroid": {
"lat": 40.960769054054054549851571209728717803955078125,
"lon": 28.745096264864866242305652122013270854949951171875
},
"bbox": {
"min_lat": 40.9605217000000010330040822736918926239013671875,
"min_lon": 28.744751699999998351131580420769751071929931640625,
"max_lat": 40.96116829999999708888935856521129608154296875,
"max_lon": 28.745464999999999378132997662760317325592041015625
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 417 meters
- Average Distance: 460 meters
- Duration: 3h 49m
- Period: 2026-07-19T08:15:00+00:00 to 2026-07-19T12:04:50+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.2 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 417m, avg 460m) for 230 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 417m, avg 460m |
| Duration | 25/25 | Duration 230 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±17m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"vessel_b": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"min_distance_m": 417.3999999999999772626324556767940521240234375,
"avg_distance_m": 459.69999999999998863131622783839702606201171875,
"distance_consistency_m": 16.60000000000000142108547152020037174224853515625,
"duration_minutes": 229.80000000000001136868377216160297393798828125,
"overlap_duration_s": 13790,
"speed_a_avg": 0.14000000000000001332267629550187848508358001708984375,
"speed_a_std": 0.11999999999999999555910790149937383830547332763671875,
"speed_b_avg": 0.179999999999999993338661852249060757458209991455078125,
"speed_b_std": 0.14000000000000001332267629550187848508358001708984375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.14000000000000001332267629550187848508358001708984375,
"max_sog": 0.299999999999999988897769753748434595763683319091796875
},
"vessel_b": {
"avg_sog": 0.179999999999999993338661852249060757458209991455078125,
"max_sog": 0.40000000000000002220446049250313080847263336181640625
}
},
"time_window": {
"start": "2026-07-19T08:15:00+00:00",
"end": "2026-07-19T12:04:50+00:00"
},
"points_count": {
"vessel_a": 21,
"vessel_b": 21
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 417m, avg 460m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 230 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b117m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 417m, avg 460m) for 230 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 25m
- Data Points: 35 AIS positions
- Period: 2026-07-19T08:41:01+00:00 to 2026-07-19T15:06:46+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 385.80000000000001136868377216160297393798828125,
"points_in_zone": 35,
"first_point": {
"ts": "2026-07-19T08:41:01+00:00",
"lat": 40.9618717000000032157913665287196636199951171875,
"lon": 28.74496500000000054342308430932462215423583984375
},
"last_point": {
"ts": "2026-07-19T15:06:46+00:00",
"lat": 40.960949999999996862243278883397579193115234375,
"lon": 28.7448617000000012922100722789764404296875
}
}- Duration: 6h 25m
- Radius: 124 meters
- Data Points: 35 AIS positions
- Centroid: 40.9609, 28.7450
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 123.599999999999994315658113919198513031005859375,
"duration_minutes": 385.80000000000001136868377216160297393798828125,
"points": 35,
"centroid": {
"lat": 40.96093019142858082659586216323077678680419921875,
"lon": 28.745046239999997084169081063009798526763916015625
},
"bbox": {
"min_lat": 40.9605217000000010330040822736918926239013671875,
"min_lon": 28.744751699999998351131580420769751071929931640625,
"max_lat": 40.9620400000000017826096154749393463134765625,
"max_lon": 28.745464999999999378132997662760317325592041015625
},
"zone_id": "osint_bosphorus"
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 19m
- Data Points: 34 AIS positions
- Period: 2026-07-19T07:57:05+00:00 to 2026-07-19T14:16:52+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 379.80000000000001136868377216160297393798828125,
"points_in_zone": 34,
"first_point": {
"ts": "2026-07-19T07:57:05+00:00",
"lat": 40.9618382999999965932147460989654064178466796875,
"lon": 28.7448949999999996407495927996933460235595703125
},
"last_point": {
"ts": "2026-07-19T14:16:52+00:00",
"lat": 40.96094329999999672509147785604000091552734375,
"lon": 28.744963299999998440625859075225889682769775390625
}
}- Duration: 6h 19m
- Radius: 114 meters
- Data Points: 34 AIS positions
- Centroid: 40.9610, 28.7450
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 113.900000000000005684341886080801486968994140625,
"duration_minutes": 379.80000000000001136868377216160297393798828125,
"points": 34,
"centroid": {
"lat": 40.9610184323529296079868800006806850433349609375,
"lon": 28.745038038235296795619433396495878696441650390625
},
"bbox": {
"min_lat": 40.9605217000000010330040822736918926239013671875,
"min_lon": 28.744751699999998351131580420769751071929931640625,
"max_lat": 40.9620400000000017826096154749393463134765625,
"max_lon": 28.745464999999999378132997662760317325592041015625
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 423 meters
- Average Distance: 433 meters
- Duration: 1h 21m
- Period: 2026-07-19T07:01:56+00:00 to 2026-07-19T08:23:03+00:00
- Vessel A Avg Speed: 0.2 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 423m, avg 433m) for 81 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 423m, avg 433m |
| Duration | 15/25 | Duration 81 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±10m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
🛰️ 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": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 422.8999999999999772626324556767940521240234375,
"avg_distance_m": 433.30000000000001136868377216160297393798828125,
"distance_consistency_m": 9.699999999999999289457264239899814128875732421875,
"duration_minutes": 81.099999999999994315658113919198513031005859375,
"overlap_duration_s": 4867,
"speed_a_avg": 0.1600000000000000033306690738754696212708950042724609375,
"speed_a_std": 0.11000000000000000055511151231257827021181583404541015625,
"speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.1600000000000000033306690738754696212708950042724609375,
"max_sog": 0.40000000000000002220446049250313080847263336181640625
},
"vessel_b": {
"avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-07-19T07:01:56+00:00",
"end": "2026-07-19T08:23:03+00:00"
},
"points_count": {
"vessel_a": 7,
"vessel_b": 7
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 65,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 423m, avg 433m"
},
"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 \u00b110m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 423m, avg 433m) for 81 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 40.95989519999999828314685146324336528778076171875,
"lon": 28.744064900000001472335497965104877948760986328125
},
"time_window": {
"start_ts": "2026-07-19T07:01:56+00:00",
"end_ts": "2026-07-19T08:23:03+00:00"
},
"searched_at": "2026-07-19T13:30:02.178143+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 422 meters
- Average Distance: 433 meters
- Duration: 56 minutes
- Period: 2026-07-19T06:37:07+00:00 to 2026-07-19T07:33:04+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 422m, avg 433m) for 56 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 422m, avg 433m |
| Duration | 10/25 | Duration 56 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: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"vessel_b": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"min_distance_m": 422,
"avg_distance_m": 433.19999999999998863131622783839702606201171875,
"distance_consistency_m": 9.300000000000000710542735760100185871124267578125,
"duration_minutes": 56,
"overlap_duration_s": 3357,
"speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
"speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-07-19T06:37:07+00:00",
"end": "2026-07-19T07:33:04+00:00"
},
"points_count": {
"vessel_a": 6,
"vessel_b": 6
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 60,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 422m, avg 433m"
},
"duration": {
"score": 10,
"max": 25,
"detail": "Duration 56 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b19m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 422m, avg 433m) for 56 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 29m
- Data Points: 35 AIS positions
- Period: 2026-07-19T06:55:08+00:00 to 2026-07-19T13:24:50+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 389.69999999999998863131622783839702606201171875,
"points_in_zone": 35,
"first_point": {
"ts": "2026-07-19T06:55:08+00:00",
"lat": 40.96157329999999774372554384171962738037109375,
"lon": 28.744820000000000703721525496803224086761474609375
},
"last_point": {
"ts": "2026-07-19T13:24:50+00:00",
"lat": 40.9607682999999980211214278824627399444580078125,
"lon": 28.744941699999998263592715375125408172607421875
}
}- Duration: 6h 29m
- Radius: 100 meters
- Data Points: 35 AIS positions
- Centroid: 40.9611, 28.7450
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 99.900000000000005684341886080801486968994140625,
"duration_minutes": 389.69999999999998863131622783839702606201171875,
"points": 35,
"centroid": {
"lat": 40.96114814571427586997742764651775360107421875,
"lon": 28.74501057142857263215773855336010456085205078125
},
"bbox": {
"min_lat": 40.9605217000000010330040822736918926239013671875,
"min_lon": 28.744751699999998351131580420769751071929931640625,
"max_lat": 40.9620400000000017826096154749393463134765625,
"max_lon": 28.745464999999999378132997662760317325592041015625
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 415 meters
- Average Distance: 430 meters
- Duration: 3 hours
- Period: 2026-07-19T05:22:58+00:00 to 2026-07-19T08:23:03+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 415m, avg 430m) for 180 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 415m, avg 430m |
| Duration | 25/25 | Duration 180 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: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 414.69999999999998863131622783839702606201171875,
"avg_distance_m": 430,
"distance_consistency_m": 9.300000000000000710542735760100185871124267578125,
"duration_minutes": 180.099999999999994315658113919198513031005859375,
"overlap_duration_s": 10805,
"speed_a_avg": 0.11000000000000000055511151231257827021181583404541015625,
"speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
"speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.11000000000000000055511151231257827021181583404541015625,
"max_sog": 0.40000000000000002220446049250313080847263336181640625
},
"vessel_b": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-07-19T05:22:58+00:00",
"end": "2026-07-19T08:23:03+00:00"
},
"points_count": {
"vessel_a": 15,
"vessel_b": 15
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 415m, avg 430m"
},
"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 \u00b19m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 415m, avg 430m) for 180 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 25m
- Data Points: 38 AIS positions
- Period: 2026-07-19T05:57:07+00:00 to 2026-07-19T12:22:49+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 385.69999999999998863131622783839702606201171875,
"points_in_zone": 38,
"first_point": {
"ts": "2026-07-19T05:57:07+00:00",
"lat": 40.9616266999999965037204674445092678070068359375,
"lon": 28.74483000000000032514435588382184505462646484375
},
"last_point": {
"ts": "2026-07-19T12:22:49+00:00",
"lat": 40.9610033000000015590558177791535854339599609375,
"lon": 28.74487669999999894798747845925390720367431640625
}
}- Duration: 6h 25m
- Radius: 93 meters
- Data Points: 38 AIS positions
- Centroid: 40.9613, 28.7450
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 93,
"duration_minutes": 385.69999999999998863131622783839702606201171875,
"points": 38,
"centroid": {
"lat": 40.9612805710526259872494847513735294342041015625,
"lon": 28.744982807894739806897632661275565624237060546875
},
"bbox": {
"min_lat": 40.9605217000000010330040822736918926239013671875,
"min_lon": 28.744751699999998351131580420769751071929931640625,
"max_lat": 40.9620400000000017826096154749393463134765625,
"max_lon": 28.745464999999999378132997662760317325592041015625
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 438 meters
- Average Distance: 467 meters
- Duration: 42 minutes
- Period: 2026-07-19T04:24:58+00:00 to 2026-07-19T05:06:58+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Low-confidence STS candidate - may warrant review. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 438m, avg 467m) for 42 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 438m, avg 467m |
| Duration | 5/25 | Duration 42 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±23m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
🛰️ 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": 273295620,
"imo": 9884150,
"name": "SERGEY LVOV",
"flag": "RUSSIA"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 438.30000000000001136868377216160297393798828125,
"avg_distance_m": 467.30000000000001136868377216160297393798828125,
"distance_consistency_m": 22.800000000000000710542735760100185871124267578125,
"duration_minutes": 42,
"overlap_duration_s": 2520,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-07-19T04:24:58+00:00",
"end": "2026-07-19T05:06:58+00:00"
},
"points_count": {
"vessel_a": 4,
"vessel_b": 4
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 55,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 438m, avg 467m"
},
"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 \u00b123m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Low-confidence STS candidate - may warrant review. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 438m, avg 467m) for 42 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 40.96349539999999933570506982505321502685546875,
"lon": 28.745756499999998823113855905830860137939453125
},
"time_window": {
"start_ts": "2026-07-19T04:24:58+00:00",
"end_ts": "2026-07-19T05:06:58+00:00"
},
"searched_at": "2026-07-19T10:45:10.695985+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 27m
- Data Points: 40 AIS positions
- Period: 2026-07-19T04:57:11+00:00 to 2026-07-19T11:24:50+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 387.6000000000000227373675443232059478759765625,
"points_in_zone": 40,
"first_point": {
"ts": "2026-07-19T04:57:11+00:00",
"lat": 40.96153170000000187656041816808283329010009765625,
"lon": 28.744775000000000630961949354968965053558349609375
},
"last_point": {
"ts": "2026-07-19T11:24:50+00:00",
"lat": 40.960686699999996562837623059749603271484375,
"lon": 28.745259999999998257180777727626264095306396484375
}
}- Duration: 6h 27m
- Radius: 108 meters
- Data Points: 40 AIS positions
- Centroid: 40.9614, 28.7449
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 108,
"duration_minutes": 387.6000000000000227373675443232059478759765625,
"points": 40,
"centroid": {
"lat": 40.9614158325000090599132818169891834259033203125,
"lon": 28.744944457499997270133462734520435333251953125
},
"bbox": {
"min_lat": 40.9605217000000010330040822736918926239013671875,
"min_lon": 28.744775000000000630961949354968965053558349609375,
"max_lat": 40.9620400000000017826096154749393463134765625,
"max_lon": 28.745464999999999378132997662760317325592041015625
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 415 meters
- Average Distance: 437 meters
- Duration: 4h 57m
- Period: 2026-07-19T03:25:59+00:00 to 2026-07-19T08:23:03+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 415m, avg 437m) for 297 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 415m, avg 437m |
| Duration | 25/25 | Duration 297 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: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 414.69999999999998863131622783839702606201171875,
"avg_distance_m": 436.80000000000001136868377216160297393798828125,
"distance_consistency_m": 13.5,
"duration_minutes": 297.1000000000000227373675443232059478759765625,
"overlap_duration_s": 17824,
"speed_a_avg": 0.11000000000000000055511151231257827021181583404541015625,
"speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
"speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.11000000000000000055511151231257827021181583404541015625,
"max_sog": 0.40000000000000002220446049250313080847263336181640625
},
"vessel_b": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-07-19T03:25:59+00:00",
"end": "2026-07-19T08:23:03+00:00"
},
"points_count": {
"vessel_a": 22,
"vessel_b": 22
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 415m, avg 437m"
},
"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 \u00b114m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 415m, avg 437m) for 297 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Minimum Distance: 438 meters
- Average Distance: 465 meters
- Duration: 1h 26m
- Period: 2026-07-19T03:40:03+00:00 to 2026-07-19T05:06:58+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 438m, avg 465m) 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 Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 438m, avg 465m |
| Duration | 15/25 | Duration 87 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±17m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
🛰️ 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": 273295620,
"imo": 9884150,
"name": "SERGEY LVOV",
"flag": "RUSSIA"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 438.30000000000001136868377216160297393798828125,
"avg_distance_m": 465.3999999999999772626324556767940521240234375,
"distance_consistency_m": 16.699999999999999289457264239899814128875732421875,
"duration_minutes": 86.900000000000005684341886080801486968994140625,
"overlap_duration_s": 5215,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
"speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-07-19T03:40:03+00:00",
"end": "2026-07-19T05:06:58+00:00"
},
"points_count": {
"vessel_a": 7,
"vessel_b": 7
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 65,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 438m, avg 465m"
},
"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 \u00b117m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 438m, avg 465m) 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 40.962917099999998526982381008565425872802734375,
"lon": 28.746113199999999920919435680843889713287353515625
},
"time_window": {
"start_ts": "2026-07-19T03:21:09+00:00",
"end_ts": "2026-07-19T05:06:58+00:00"
},
"searched_at": "2026-07-19T09:30:15.884158+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 32m
- Data Points: 40 AIS positions
- Period: 2026-07-19T03:51:11+00:00 to 2026-07-19T10:23:52+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 392.69999999999998863131622783839702606201171875,
"points_in_zone": 40,
"first_point": {
"ts": "2026-07-19T03:51:11+00:00",
"lat": 40.96098669999999941637724987231194972991943359375,
"lon": 28.744981700000000301997715723700821399688720703125
},
"last_point": {
"ts": "2026-07-19T10:23:52+00:00",
"lat": 40.9605217000000010330040822736918926239013671875,
"lon": 28.745450000000001722355591482482850551605224609375
}
}- Duration: 6h 32m
- Radius: 118 meters
- Data Points: 40 AIS positions
- Centroid: 40.9615, 28.7449
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 117.599999999999994315658113919198513031005859375,
"duration_minutes": 392.69999999999998863131622783839702606201171875,
"points": 40,
"centroid": {
"lat": 40.96149570750001345231794402934610843658447265625,
"lon": 28.74490066749999783723978907801210880279541015625
},
"bbox": {
"min_lat": 40.9605217000000010330040822736918926239013671875,
"min_lon": 28.744775000000000630961949354968965053558349609375,
"max_lat": 40.9620400000000017826096154749393463134765625,
"max_lon": 28.745450000000001722355591482482850551605224609375
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 428 meters
- Average Distance: 446 meters
- Duration: 2h 8m
- Period: 2026-07-19T02:19:13+00:00 to 2026-07-19T04:27:11+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 428m, avg 446m) for 128 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 Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 428m, avg 446m |
| Duration | 25/25 | Duration 128 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±11m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"vessel_b": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"min_distance_m": 428.30000000000001136868377216160297393798828125,
"avg_distance_m": 445.80000000000001136868377216160297393798828125,
"distance_consistency_m": 11.300000000000000710542735760100185871124267578125,
"duration_minutes": 128,
"overlap_duration_s": 7678,
"speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
"speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
"speed_b_avg": 0.11999999999999999555910790149937383830547332763671875,
"speed_b_std": 0.1000000000000000055511151231257827021181583404541015625,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0.11999999999999999555910790149937383830547332763671875,
"max_sog": 0.299999999999999988897769753748434595763683319091796875
}
},
"time_window": {
"start": "2026-07-19T02:19:13+00:00",
"end": "2026-07-19T04:27:11+00:00"
},
"points_count": {
"vessel_a": 10,
"vessel_b": 10
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 428m, avg 446m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 128 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b111m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 428m, avg 446m) for 128 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Minimum Distance: 438 meters
- Average Distance: 470 meters
- Duration: 2h 58m
- Period: 2026-07-19T02:08:03+00:00 to 2026-07-19T05:06:58+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 438m, avg 470m) for 179 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 438m, avg 470m |
| Duration | 25/25 | Duration 179 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±13m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 273295620,
"imo": 9884150,
"name": "SERGEY LVOV",
"flag": "RUSSIA"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 438.30000000000001136868377216160297393798828125,
"avg_distance_m": 469.80000000000001136868377216160297393798828125,
"distance_consistency_m": 12.9000000000000003552713678800500929355621337890625,
"duration_minutes": 178.900000000000005684341886080801486968994140625,
"overlap_duration_s": 10735,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-07-19T02:08:03+00:00",
"end": "2026-07-19T05:06:58+00:00"
},
"points_count": {
"vessel_a": 14,
"vessel_b": 14
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 438m, avg 470m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 179 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b113m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 438m, avg 470m) for 179 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 34m
- Data Points: 39 AIS positions
- Period: 2026-07-19T02:45:10+00:00 to 2026-07-19T09:20:00+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 394.80000000000001136868377216160297393798828125,
"points_in_zone": 39,
"first_point": {
"ts": "2026-07-19T02:45:10+00:00",
"lat": 40.96087829999999740948624094016849994659423828125,
"lon": 28.745039999999999480451151612214744091033935546875
},
"last_point": {
"ts": "2026-07-19T09:20:00+00:00",
"lat": 40.9615000000000009094947017729282379150390625,
"lon": 28.74486329999999867368387640453875064849853515625
}
}- Duration: 6h 34m
- Radius: 79 meters
- Data Points: 39 AIS positions
- Centroid: 40.9615, 28.7449
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 78.900000000000005684341886080801486968994140625,
"duration_minutes": 394.80000000000001136868377216160297393798828125,
"points": 39,
"centroid": {
"lat": 40.9615194410256435730843804776668548583984375,
"lon": 28.744895258974363372317384346388280391693115234375
},
"bbox": {
"min_lat": 40.9608367000000015423211152665317058563232421875,
"min_lon": 28.744775000000000630961949354968965053558349609375,
"max_lat": 40.9620400000000017826096154749393463134765625,
"max_lon": 28.745181699999999835881681065075099468231201171875
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 434 meters
- Average Distance: 446 meters
- Duration: 1h 36m
- Period: 2026-07-19T01:04:56+00:00 to 2026-07-19T02:40:55+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 434m, avg 446m) for 96 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 434m, avg 446m |
| Duration | 20/25 | Duration 96 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±8m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
🛰️ 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": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 434.30000000000001136868377216160297393798828125,
"avg_distance_m": 446.30000000000001136868377216160297393798828125,
"distance_consistency_m": 7.79999999999999982236431605997495353221893310546875,
"duration_minutes": 96,
"overlap_duration_s": 5759,
"speed_a_avg": 0.11999999999999999555910790149937383830547332763671875,
"speed_a_std": 0.11000000000000000055511151231257827021181583404541015625,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.11999999999999999555910790149937383830547332763671875,
"max_sog": 0.40000000000000002220446049250313080847263336181640625
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-07-19T01:04:56+00:00",
"end": "2026-07-19T02:40:55+00:00"
},
"points_count": {
"vessel_a": 10,
"vessel_b": 10
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 70,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 434m, avg 446m"
},
"duration": {
"score": 20,
"max": 25,
"detail": "Duration 96 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b18m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 434m, avg 446m) for 96 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 40.95899969999999967740222928114235401153564453125,
"lon": 28.744175500000000766931407270021736621856689453125
},
"time_window": {
"start_ts": "2026-07-19T01:04:56+00:00",
"end_ts": "2026-07-19T02:40:55+00:00"
},
"searched_at": "2026-07-19T07:30:02.238171+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 438 meters
- Average Distance: 469 meters
- Duration: 3h 13m
- Period: 2026-07-19T01:53:04+00:00 to 2026-07-19T05:06:58+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 438m, avg 469m) for 194 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 438m, avg 469m |
| Duration | 25/25 | Duration 194 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±12m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 273295620,
"imo": 9884150,
"name": "SERGEY LVOV",
"flag": "RUSSIA"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 438.30000000000001136868377216160297393798828125,
"avg_distance_m": 468.8999999999999772626324556767940521240234375,
"distance_consistency_m": 12.4000000000000003552713678800500929355621337890625,
"duration_minutes": 193.900000000000005684341886080801486968994140625,
"overlap_duration_s": 11634,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-07-19T01:53:04+00:00",
"end": "2026-07-19T05:06:58+00:00"
},
"points_count": {
"vessel_a": 16,
"vessel_b": 16
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 438m, avg 469m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 194 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b112m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 438m, avg 469m) for 194 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 29m
- Data Points: 40 AIS positions
- Period: 2026-07-19T01:45:15+00:00 to 2026-07-19T08:15:00+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 389.80000000000001136868377216160297393798828125,
"points_in_zone": 40,
"first_point": {
"ts": "2026-07-19T01:45:15+00:00",
"lat": 40.960949999999996862243278883397579193115234375,
"lon": 28.745035000000001446096575818955898284912109375
},
"last_point": {
"ts": "2026-07-19T08:15:00+00:00",
"lat": 40.96186829999999901019691606052219867706298828125,
"lon": 28.744945000000001300577423535287380218505859375
}
}- Duration: 6h 29m
- Radius: 68 meters
- Data Points: 40 AIS positions
- Centroid: 40.9614, 28.7449
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 68.400000000000005684341886080801486968994140625,
"duration_minutes": 389.80000000000001136868377216160297393798828125,
"points": 40,
"centroid": {
"lat": 40.96142149749999816776835359632968902587890625,
"lon": 28.74490046249999153360477066598832607269287109375
},
"bbox": {
"min_lat": 40.9608367000000015423211152665317058563232421875,
"min_lon": 28.744775000000000630961949354968965053558349609375,
"max_lat": 40.96186829999999901019691606052219867706298828125,
"max_lon": 28.745181699999999835881681065075099468231201171875
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 438 meters
- Average Distance: 469 meters
- Duration: 4h 9m
- Period: 2026-07-19T00:57:02+00:00 to 2026-07-19T05:06:58+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 438m, avg 469m) for 250 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 438m, avg 469m |
| Duration | 25/25 | Duration 250 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±11m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 273295620,
"imo": 9884150,
"name": "SERGEY LVOV",
"flag": "RUSSIA"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 438.30000000000001136868377216160297393798828125,
"avg_distance_m": 469.30000000000001136868377216160297393798828125,
"distance_consistency_m": 11.300000000000000710542735760100185871124267578125,
"duration_minutes": 249.900000000000005684341886080801486968994140625,
"overlap_duration_s": 14996,
"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": "2026-07-19T00:57:02+00:00",
"end": "2026-07-19T05:06:58+00:00"
},
"points_count": {
"vessel_a": 20,
"vessel_b": 20
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 438m, avg 469m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 250 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b111m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 438m, avg 469m) for 250 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Minimum Distance: 434 meters
- Average Distance: 451 meters
- Duration: 2h 36m
- Period: 2026-07-19T00:04:56+00:00 to 2026-07-19T02:40:55+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 434m, avg 451m) for 156 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 434m, avg 451m |
| Duration | 25/25 | Duration 156 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: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 434.30000000000001136868377216160297393798828125,
"avg_distance_m": 451.30000000000001136868377216160297393798828125,
"distance_consistency_m": 9.199999999999999289457264239899814128875732421875,
"duration_minutes": 156,
"overlap_duration_s": 9359,
"speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
"speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
"max_sog": 0.40000000000000002220446049250313080847263336181640625
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-07-19T00:04:56+00:00",
"end": "2026-07-19T02:40:55+00:00"
},
"points_count": {
"vessel_a": 16,
"vessel_b": 16
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 434m, avg 451m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 156 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b19m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 434m, avg 451m) for 156 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 31m
- Data Points: 39 AIS positions
- Period: 2026-07-19T00:55:16+00:00 to 2026-07-19T07:27:05+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 391.80000000000001136868377216160297393798828125,
"points_in_zone": 39,
"first_point": {
"ts": "2026-07-19T00:55:16+00:00",
"lat": 40.96092829999999906931407167576253414154052734375,
"lon": 28.745129999999999625970303895883262157440185546875
},
"last_point": {
"ts": "2026-07-19T07:27:05+00:00",
"lat": 40.9618032999999996945916791446506977081298828125,
"lon": 28.74496669999999909350663074292242527008056640625
}
}- Duration: 6h 31m
- Radius: 59 meters
- Data Points: 39 AIS positions
- Centroid: 40.9613, 28.7449
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 59,
"duration_minutes": 391.80000000000001136868377216160297393798828125,
"points": 39,
"centroid": {
"lat": 40.96131482564101844445758615620434284210205078125,
"lon": 28.74492410769230588130085379816591739654541015625
},
"bbox": {
"min_lat": 40.96080829999999650681274943053722381591796875,
"min_lon": 28.744775000000000630961949354968965053558349609375,
"max_lat": 40.9618032999999996945916791446506977081298828125,
"max_lon": 28.745181699999999835881681065075099468231201171875
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 434 meters
- Average Distance: 452 meters
- Duration: 2h 42m
- Period: 2026-07-18T23:58:56+00:00 to 2026-07-19T02:40:55+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 434m, avg 452m) for 162 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 434m, avg 452m |
| Duration | 25/25 | Duration 162 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: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 434.30000000000001136868377216160297393798828125,
"avg_distance_m": 451.6000000000000227373675443232059478759765625,
"distance_consistency_m": 9,
"duration_minutes": 162,
"overlap_duration_s": 9719,
"speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
"speed_a_std": 0.0899999999999999966693309261245303787291049957275390625,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
"max_sog": 0.40000000000000002220446049250313080847263336181640625
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-07-18T23:58:56+00:00",
"end": "2026-07-19T02:40:55+00:00"
},
"points_count": {
"vessel_a": 17,
"vessel_b": 17
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 434m, avg 452m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 162 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b19m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 434m, avg 452m) for 162 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 29m
- Data Points: 34 AIS positions
- Period: 2026-07-18T23:33:15+00:00 to 2026-07-19T06:03:08+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 389.8999999999999772626324556767940521240234375,
"points_in_zone": 34,
"first_point": {
"ts": "2026-07-18T23:33:15+00:00",
"lat": 40.961056700000000319050741381943225860595703125,
"lon": 28.74491499999999888359525357373058795928955078125
},
"last_point": {
"ts": "2026-07-19T06:03:08+00:00",
"lat": 40.96164499999999719648258178494870662689208984375,
"lon": 28.74486999999999881083567743189632892608642578125
}
}- Duration: 6h 29m
- Radius: 54 meters
- Data Points: 34 AIS positions
- Centroid: 40.9612, 28.7449
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 54.10000000000000142108547152020037174224853515625,
"duration_minutes": 389.8999999999999772626324556767940521240234375,
"points": 34,
"centroid": {
"lat": 40.96119681176469384809024631977081298828125,
"lon": 28.74494755588235506138516939245164394378662109375
},
"bbox": {
"min_lat": 40.96080829999999650681274943053722381591796875,
"min_lon": 28.744775000000000630961949354968965053558349609375,
"max_lat": 40.9616783000000026504494599066674709320068359375,
"max_lon": 28.745181699999999835881681065075099468231201171875
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 438 meters
- Average Distance: 469 meters
- Duration: 5h 54m
- Period: 2026-07-18T22:56:57+00:00 to 2026-07-19T04:51:03+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 438m, avg 469m) for 354 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 438m, avg 469m |
| Duration | 25/25 | Duration 354 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±10m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 273295620,
"imo": 9884150,
"name": "SERGEY LVOV",
"flag": "RUSSIA"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 438.30000000000001136868377216160297393798828125,
"avg_distance_m": 469.30000000000001136868377216160297393798828125,
"distance_consistency_m": 10.4000000000000003552713678800500929355621337890625,
"duration_minutes": 354.1000000000000227373675443232059478759765625,
"overlap_duration_s": 21246,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
"speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-07-18T22:56:57+00:00",
"end": "2026-07-19T04:51:03+00:00"
},
"points_count": {
"vessel_a": 22,
"vessel_b": 22
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 438m, avg 469m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 354 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b110m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 438m, avg 469m) for 354 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Minimum Distance: 433 meters
- Average Distance: 451 meters
- Duration: 3h 39m
- Period: 2026-07-18T22:09:19+00:00 to 2026-07-19T01:49:14+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 433m, avg 451m) for 220 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 Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 433m, avg 451m |
| Duration | 25/25 | Duration 220 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±8m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"vessel_b": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"min_distance_m": 433.19999999999998863131622783839702606201171875,
"avg_distance_m": 450.80000000000001136868377216160297393798828125,
"distance_consistency_m": 7.5,
"duration_minutes": 219.900000000000005684341886080801486968994140625,
"overlap_duration_s": 13195,
"speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
"speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
"speed_b_avg": 0.13000000000000000444089209850062616169452667236328125,
"speed_b_std": 0.11999999999999999555910790149937383830547332763671875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0.13000000000000000444089209850062616169452667236328125,
"max_sog": 0.5
}
},
"time_window": {
"start": "2026-07-18T22:09:19+00:00",
"end": "2026-07-19T01:49:14+00:00"
},
"points_count": {
"vessel_a": 18,
"vessel_b": 18
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 433m, avg 451m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 220 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b18m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 433m, avg 451m) for 220 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 35m
- Data Points: 34 AIS positions
- Period: 2026-07-18T22:43:16+00:00 to 2026-07-19T05:19:08+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 395.8999999999999772626324556767940521240234375,
"points_in_zone": 34,
"first_point": {
"ts": "2026-07-18T22:43:16+00:00",
"lat": 40.961056700000000319050741381943225860595703125,
"lon": 28.74492169999999902074705460108816623687744140625
},
"last_point": {
"ts": "2026-07-19T05:19:08+00:00",
"lat": 40.9615782999999993307937984354794025421142578125,
"lon": 28.744789999999998286739355535246431827545166015625
}
}- Duration: 6h 35m
- Radius: 63 meters
- Data Points: 34 AIS positions
- Centroid: 40.9611, 28.7450
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 63.2000000000000028421709430404007434844970703125,
"duration_minutes": 395.8999999999999772626324556767940521240234375,
"points": 34,
"centroid": {
"lat": 40.961115002941170359918032772839069366455078125,
"lon": 28.744958388235300361657209577970206737518310546875
},
"bbox": {
"min_lat": 40.96080829999999650681274943053722381591796875,
"min_lon": 28.744775000000000630961949354968965053558349609375,
"max_lat": 40.9616783000000026504494599066674709320068359375,
"max_lon": 28.745181699999999835881681065075099468231201171875
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 458 meters
- Average Distance: 472 meters
- Duration: 5h 52m
- Period: 2026-07-18T21:59:59+00:00 to 2026-07-19T03:51:59+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 458m, avg 472m) for 352 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 458m, avg 472m |
| Duration | 25/25 | Duration 352 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±7m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 273295620,
"imo": 9884150,
"name": "SERGEY LVOV",
"flag": "RUSSIA"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 458.19999999999998863131622783839702606201171875,
"avg_distance_m": 472.3999999999999772626324556767940521240234375,
"distance_consistency_m": 6.70000000000000017763568394002504646778106689453125,
"duration_minutes": 352,
"overlap_duration_s": 21120,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
"speed_b_std": 0.0299999999999999988897769753748434595763683319091796875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-07-18T21:59:59+00:00",
"end": "2026-07-19T03:51:59+00:00"
},
"points_count": {
"vessel_a": 23,
"vessel_b": 23
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 458m, avg 472m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 352 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b17m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 458m, avg 472m) for 352 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Zone: Bosphorus/Dardanelles Approach
- Duration: 6h 35m
- Data Points: 32 AIS positions
- Period: 2026-07-18T21:51:18+00:00 to 2026-07-19T04:27:11+00:00
Show Raw Evidence JSON
{
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"dwell_minutes": 395.8999999999999772626324556767940521240234375,
"points_in_zone": 32,
"first_point": {
"ts": "2026-07-18T21:51:18+00:00",
"lat": 40.961136699999997290433384478092193603515625,
"lon": 28.744904999999999262172423186711966991424560546875
},
"last_point": {
"ts": "2026-07-19T04:27:11+00:00",
"lat": 40.961354999999997517079464159905910491943359375,
"lon": 28.744918299999998367866282933391630649566650390625
}
}- Duration: 6h 35m
- Radius: 36 meters
- Data Points: 32 AIS positions
- Centroid: 40.9610, 28.7450
- Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
"radius_m": 36.39999999999999857891452847979962825775146484375,
"duration_minutes": 395.8999999999999772626324556767940521240234375,
"points": 32,
"centroid": {
"lat": 40.9610302156250014604665921069681644439697265625,
"lon": 28.74497390937500540530891157686710357666015625
},
"bbox": {
"min_lat": 40.96080829999999650681274943053722381591796875,
"min_lon": 28.744833299999999809415385243482887744903564453125,
"max_lat": 40.961354999999997517079464159905910491943359375,
"max_lon": 28.745181699999999835881681065075099468231201171875
},
"zone_id": "osint_bosphorus"
}- Minimum Distance: 432 meters
- Average Distance: 449 meters
- Duration: 2h 36m
- Period: 2026-07-18T21:04:56+00:00 to 2026-07-18T23:40:57+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 432m, avg 449m) for 156 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 432m, avg 449m |
| Duration | 25/25 | Duration 156 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±10m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 431.8999999999999772626324556767940521240234375,
"avg_distance_m": 449.30000000000001136868377216160297393798828125,
"distance_consistency_m": 9.800000000000000710542735760100185871124267578125,
"duration_minutes": 156,
"overlap_duration_s": 9361,
"speed_a_avg": 0.14000000000000001332267629550187848508358001708984375,
"speed_a_std": 0.14000000000000001332267629550187848508358001708984375,
"speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
"speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.14000000000000001332267629550187848508358001708984375,
"max_sog": 0.5
},
"vessel_b": {
"avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-07-18T21:04:56+00:00",
"end": "2026-07-18T23:40:57+00:00"
},
"points_count": {
"vessel_a": 14,
"vessel_b": 14
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 432m, avg 449m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 156 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b110m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (YARA J and SAMANYOLU) maintained close proximity (min 432m, avg 449m) for 156 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Minimum Distance: 446 meters
- Average Distance: 459 meters
- Duration: 48 minutes
- Period: 2026-07-18T20:31:16+00:00 to 2026-07-18T21:19:17+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 446m, avg 459m) for 48 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 Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 446m, avg 459m |
| Duration | 10/25 | Duration 48 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±17m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"vessel_b": {
"mmsi": 620800363,
"imo": 9221803,
"name": "YARA J",
"flag": "COMOROS"
},
"min_distance_m": 445.69999999999998863131622783839702606201171875,
"avg_distance_m": 458.6000000000000227373675443232059478759765625,
"distance_consistency_m": 16.699999999999999289457264239899814128875732421875,
"duration_minutes": 48,
"overlap_duration_s": 2881,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0.14000000000000001332267629550187848508358001708984375,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0.14000000000000001332267629550187848508358001708984375,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-07-18T20:31:16+00:00",
"end": "2026-07-18T21:19:17+00:00"
},
"points_count": {
"vessel_a": 5,
"vessel_b": 5
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 60,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 446m, avg 459m"
},
"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 \u00b117m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SAMANYOLU and YARA J) maintained close proximity (min 446m, avg 459m) for 48 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}- Minimum Distance: 458 meters
- Average Distance: 478 meters
- Duration: 6h 7m
- Period: 2026-07-18T20:17:57+00:00 to 2026-07-19T02:24:58+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Bosphorus/Dardanelles Approach
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 458m, avg 478m) for 367 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 5/25 | Min distance 458m, avg 478m |
| Duration | 25/25 | Duration 367 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±10m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Bosphorus/Dardanelles Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 273295620,
"imo": 9884150,
"name": "SERGEY LVOV",
"flag": "RUSSIA"
},
"vessel_b": {
"mmsi": 511101642,
"imo": 9359569,
"name": "SAMANYOLU",
"flag": "PALAU"
},
"min_distance_m": 458.19999999999998863131622783839702606201171875,
"avg_distance_m": 478.19999999999998863131622783839702606201171875,
"distance_consistency_m": 10.0999999999999996447286321199499070644378662109375,
"duration_minutes": 367,
"overlap_duration_s": 22021,
"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": "2026-07-18T20:17:57+00:00",
"end": "2026-07-19T02:24:58+00:00"
},
"points_count": {
"vessel_a": 25,
"vessel_b": 25
},
"zone_id": "osint_bosphorus",
"zone_name": "Bosphorus\/Dardanelles Approach",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 5,
"max": 25,
"detail": "Min distance 458m, avg 478m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 367 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b110m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (SERGEY LVOV and SAMANYOLU) maintained close proximity (min 458m, avg 478m) for 367 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
}
}Recent Position Data
| Time (UTC) | Lat | Lon | Speed | Course | Zone |
|---|---|---|---|---|---|
| Jul 22 21:19 | 40.7329 | 28.6848 | 6.2 kn | 191.3° | Bosphorus/Dardanelles Approach |
| Jul 22 21:18 | 40.7360 | 28.6857 | 6.1 kn | 192.3° | Bosphorus/Dardanelles Approach |
| Jul 22 20:09 | 40.6985 | 28.6733 | 1.7 kn | 208.1° | Bosphorus/Dardanelles Approach |
| Jul 22 08:37 | 40.7271 | 28.6706 | 0.6 kn | 198.1° | Bosphorus/Dardanelles Approach |
| Jul 22 08:34 | 40.7276 | 28.6708 | 0.6 kn | 192.6° | Bosphorus/Dardanelles Approach |
| Jul 22 08:32 | 40.7280 | 28.6709 | 0.6 kn | 195.9° | Bosphorus/Dardanelles Approach |
| Jul 22 08:28 | 40.7286 | 28.6711 | 0.6 kn | 185.8° | Bosphorus/Dardanelles Approach |
| Jul 22 08:26 | 40.7290 | 28.6711 | 0.6 kn | 191.7° | Bosphorus/Dardanelles Approach |
| Jul 22 08:24 | 40.7293 | 28.6711 | 0.5 kn | 190.0° | Bosphorus/Dardanelles Approach |
| Jul 22 08:21 | 40.7298 | 28.6713 | 0.6 kn | 191.0° | Bosphorus/Dardanelles Approach |
| Jul 22 08:18 | 40.7303 | 28.6714 | 0.6 kn | 191.9° | Bosphorus/Dardanelles Approach |
| Jul 22 08:15 | 40.7307 | 28.6715 | 0.5 kn | 190.6° | Bosphorus/Dardanelles Approach |
| Jul 22 08:13 | 40.7311 | 28.6716 | 0.6 kn | 184.7° | Bosphorus/Dardanelles Approach |
| Jul 22 08:11 | 40.7315 | 28.6717 | 0.6 kn | 188.4° | Bosphorus/Dardanelles Approach |
| Jul 22 08:08 | 40.7319 | 28.6718 | 0.5 kn | 193.9° | Bosphorus/Dardanelles Approach |
| Jul 22 08:06 | 40.7322 | 28.6719 | 0.5 kn | 197.6° | Bosphorus/Dardanelles Approach |
| Jul 22 08:04 | 40.7326 | 28.6720 | 0.5 kn | 189.7° | Bosphorus/Dardanelles Approach |
| Jul 22 08:01 | 40.7331 | 28.6720 | 0.5 kn | 176.5° | Bosphorus/Dardanelles Approach |
| Jul 22 07:59 | 40.7334 | 28.6720 | 0.4 kn | 186.9° | Bosphorus/Dardanelles Approach |
| Jul 22 07:56 | 40.7336 | 28.6721 | 0.4 kn | 185.3° | Bosphorus/Dardanelles Approach |
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.
