IMO 9917402
Vessel information
Detected Events (100)
- Zone: Prigorodnoye/Sakhalin LNG
- Duration: 1h 55m
- Data Points: 33 AIS positions
- Period: 2026-10-07T22:09:56+00:00 to 2026-10-08T00:05:39+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"dwell_minutes": 115.7000000000000028421709430404007434844970703125,
"points_in_zone": 33,
"first_point": {
"ts": "2026-10-07T22:09:56+00:00",
"lat": 46.37380499999999727833710494451224803924560546875,
"lon": 142.69905499999998710336512885987758636474609375
},
"last_point": {
"ts": "2026-10-08T00:05:39+00:00",
"lat": 46.262623300000001336229615844786167144775390625,
"lon": 142.731081700000004275352694094181060791015625
}
}- Zone: Sakhalin South Approach
- Duration: 1h 55m
- Data Points: 33 AIS positions
- Period: 2026-10-07T22:09:56+00:00 to 2026-10-08T00:05:39+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"dwell_minutes": 115.7000000000000028421709430404007434844970703125,
"points_in_zone": 33,
"first_point": {
"ts": "2026-10-07T22:09:56+00:00",
"lat": 46.37380499999999727833710494451224803924560546875,
"lon": 142.69905499999998710336512885987758636474609375
},
"last_point": {
"ts": "2026-10-08T00:05:39+00:00",
"lat": 46.262623300000001336229615844786167144775390625,
"lon": 142.731081700000004275352694094181060791015625
}
}- Minimum Distance: 10 meters
- Average Distance: 19 meters
- Duration: 56 minutes
- Period: 2026-10-07T22:01:58+00:00 to 2026-10-07T22:58:08+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Prigorodnoye/Sakhalin LNG
Confidence Analysis
High-confidence STS candidate. Two tankers (ORIS and GLORISEA) maintained close proximity (min 10m, avg 19m) 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 Prigorodnoye/Sakhalin LNG, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 10m, avg 19m |
| 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: Prigorodnoye/Sakhalin LNG |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"vessel_b": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"min_distance_m": 9.699999999999999289457264239899814128875732421875,
"avg_distance_m": 19.10000000000000142108547152020037174224853515625,
"distance_consistency_m": 4.79999999999999982236431605997495353221893310546875,
"duration_minutes": 56.2000000000000028421709430404007434844970703125,
"overlap_duration_s": 3370,
"speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
"speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.059999999999999997779553950749686919152736663818359375,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-10-07T22:01:58+00:00",
"end": "2026-10-07T22:58:08+00:00"
},
"points_count": {
"vessel_a": 21,
"vessel_b": 21
},
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"score": {
"value": 80,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 10m, avg 19m"
},
"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: Prigorodnoye\/Sakhalin LNG"
}
},
"summary": "High-confidence STS candidate. Two tankers (ORIS and GLORISEA) maintained close proximity (min 10m, avg 19m) 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 Prigorodnoye\/Sakhalin LNG, a known STS activity area."
}
}- Minimum Distance: 10 meters
- Average Distance: 19 meters
- Duration: 56 minutes
- Period: 2026-10-07T22:01:58+00:00 to 2026-10-07T22:58:08+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Sakhalin South Approach
Confidence Analysis
High-confidence STS candidate. Two tankers (ORIS and GLORISEA) maintained close proximity (min 10m, avg 19m) 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 Sakhalin South Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 10m, avg 19m |
| 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: Sakhalin South Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"vessel_b": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"min_distance_m": 9.699999999999999289457264239899814128875732421875,
"avg_distance_m": 19.10000000000000142108547152020037174224853515625,
"distance_consistency_m": 4.79999999999999982236431605997495353221893310546875,
"duration_minutes": 56.2000000000000028421709430404007434844970703125,
"overlap_duration_s": 3370,
"speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
"speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.059999999999999997779553950749686919152736663818359375,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-10-07T22:01:58+00:00",
"end": "2026-10-07T22:58:08+00:00"
},
"points_count": {
"vessel_a": 21,
"vessel_b": 21
},
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"score": {
"value": 80,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 10m, avg 19m"
},
"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: Sakhalin South Approach"
}
},
"summary": "High-confidence STS candidate. Two tankers (ORIS and GLORISEA) maintained close proximity (min 10m, avg 19m) 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 Sakhalin South Approach, a known STS activity area."
}
}- Zone: Prigorodnoye/Sakhalin LNG
- Duration: 2h 55m
- Data Points: 36 AIS positions
- Period: 2026-10-07T21:09:56+00:00 to 2026-10-08T00:05:39+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"dwell_minutes": 175.69999999999998863131622783839702606201171875,
"points_in_zone": 36,
"first_point": {
"ts": "2026-10-07T21:09:56+00:00",
"lat": 46.373598299999997607301338575780391693115234375,
"lon": 142.69893830000000889413058757781982421875
},
"last_point": {
"ts": "2026-10-08T00:05:39+00:00",
"lat": 46.262623300000001336229615844786167144775390625,
"lon": 142.731081700000004275352694094181060791015625
}
}- Zone: Sakhalin South Approach
- Duration: 2h 55m
- Data Points: 36 AIS positions
- Period: 2026-10-07T21:09:56+00:00 to 2026-10-08T00:05:39+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"dwell_minutes": 175.69999999999998863131622783839702606201171875,
"points_in_zone": 36,
"first_point": {
"ts": "2026-10-07T21:09:56+00:00",
"lat": 46.373598299999997607301338575780391693115234375,
"lon": 142.69893830000000889413058757781982421875
},
"last_point": {
"ts": "2026-10-08T00:05:39+00:00",
"lat": 46.262623300000001336229615844786167144775390625,
"lon": 142.731081700000004275352694094181060791015625
}
}- Duration: 2h 20m
- Radius: 660 meters
- Data Points: 20 AIS positions
- Centroid: 46.3738, 142.6983
- Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
"radius_m": 660.3999999999999772626324556767940521240234375,
"duration_minutes": 140.400000000000005684341886080801486968994140625,
"points": 20,
"centroid": {
"lat": 46.37375183500000019876097212545573711395263671875,
"lon": 142.698323500000043395630200393497943878173828125
},
"bbox": {
"min_lat": 46.368026700000001483203959651291370391845703125,
"min_lon": 142.694753300000002127490006387233734130859375,
"max_lat": 46.37545329999999665915311197750270366668701171875,
"max_lon": 142.700614999999999099600245244801044464111328125
},
"zone_id": "russia_prigorodnoye"
}- Duration: 2h 20m
- Radius: 660 meters
- Data Points: 20 AIS positions
- Centroid: 46.3738, 142.6983
- Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
"radius_m": 660.3999999999999772626324556767940521240234375,
"duration_minutes": 140.400000000000005684341886080801486968994140625,
"points": 20,
"centroid": {
"lat": 46.37375183500000019876097212545573711395263671875,
"lon": 142.698323500000043395630200393497943878173828125
},
"bbox": {
"min_lat": 46.368026700000001483203959651291370391845703125,
"min_lon": 142.694753300000002127490006387233734130859375,
"max_lat": 46.37545329999999665915311197750270366668701171875,
"max_lon": 142.700614999999999099600245244801044464111328125
},
"zone_id": "russia_sakhalin_south"
}- Minimum Distance: 10 meters
- Average Distance: 19 meters
- Duration: 2h 39m
- Period: 2026-10-07T20:18:52+00:00 to 2026-10-07T22:57:51+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Prigorodnoye/Sakhalin LNG
Confidence Analysis
High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 19m) for 159 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 Prigorodnoye/Sakhalin LNG, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 10m, avg 19m |
| Duration | 25/25 | Duration 159 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±4m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Prigorodnoye/Sakhalin LNG |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"vessel_b": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"min_distance_m": 9.699999999999999289457264239899814128875732421875,
"avg_distance_m": 18.89999999999999857891452847979962825775146484375,
"distance_consistency_m": 3.70000000000000017763568394002504646778106689453125,
"duration_minutes": 159,
"overlap_duration_s": 9539,
"speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
"speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
"speed_b_avg": 0.0899999999999999966693309261245303787291049957275390625,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"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": "2026-10-07T20:18:52+00:00",
"end": "2026-10-07T22:57:51+00:00"
},
"points_count": {
"vessel_a": 15,
"vessel_b": 15
},
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 10m, avg 19m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 159 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b14m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
}
},
"summary": "High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 19m) for 159 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 Prigorodnoye\/Sakhalin LNG, a known STS activity area."
}
}- Minimum Distance: 10 meters
- Average Distance: 19 meters
- Duration: 2h 39m
- Period: 2026-10-07T20:18:52+00:00 to 2026-10-07T22:57:51+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Sakhalin South Approach
Confidence Analysis
High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 19m) for 159 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 Sakhalin South Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 10m, avg 19m |
| Duration | 25/25 | Duration 159 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±4m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Sakhalin South Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"vessel_b": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"min_distance_m": 9.699999999999999289457264239899814128875732421875,
"avg_distance_m": 18.89999999999999857891452847979962825775146484375,
"distance_consistency_m": 3.70000000000000017763568394002504646778106689453125,
"duration_minutes": 159,
"overlap_duration_s": 9539,
"speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
"speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
"speed_b_avg": 0.0899999999999999966693309261245303787291049957275390625,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"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": "2026-10-07T20:18:52+00:00",
"end": "2026-10-07T22:57:51+00:00"
},
"points_count": {
"vessel_a": 15,
"vessel_b": 15
},
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 10m, avg 19m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 159 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b14m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Sakhalin South Approach"
}
},
"summary": "High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 19m) for 159 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 Sakhalin South Approach, a known STS activity area."
}
}- Zone: Sakhalin South Approach
- Duration: 3h 46m
- Data Points: 38 AIS positions
- Period: 2026-10-07T20:18:52+00:00 to 2026-10-08T00:05:39+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"dwell_minutes": 226.80000000000001136868377216160297393798828125,
"points_in_zone": 38,
"first_point": {
"ts": "2026-10-07T20:18:52+00:00",
"lat": 46.37348999999999676902007195167243480682373046875,
"lon": 142.698769999999996116457623429596424102783203125
},
"last_point": {
"ts": "2026-10-08T00:05:39+00:00",
"lat": 46.262623300000001336229615844786167144775390625,
"lon": 142.731081700000004275352694094181060791015625
}
}- Zone: Prigorodnoye/Sakhalin LNG
- Duration: 3h 46m
- Data Points: 38 AIS positions
- Period: 2026-10-07T20:18:52+00:00 to 2026-10-08T00:05:39+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"dwell_minutes": 226.80000000000001136868377216160297393798828125,
"points_in_zone": 38,
"first_point": {
"ts": "2026-10-07T20:18:52+00:00",
"lat": 46.37348999999999676902007195167243480682373046875,
"lon": 142.698769999999996116457623429596424102783203125
},
"last_point": {
"ts": "2026-10-08T00:05:39+00:00",
"lat": 46.262623300000001336229615844786167144775390625,
"lon": 142.731081700000004275352694094181060791015625
}
}- Duration: 3h 11m
- Radius: 657 meters
- Data Points: 22 AIS positions
- Centroid: 46.3737, 142.6984
- Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
"radius_m": 656.6000000000000227373675443232059478759765625,
"duration_minutes": 191.400000000000005684341886080801486968994140625,
"points": 22,
"centroid": {
"lat": 46.37372538181818271141310106031596660614013671875,
"lon": 142.698370304545505860005505383014678955078125
},
"bbox": {
"min_lat": 46.368026700000001483203959651291370391845703125,
"min_lon": 142.694753300000002127490006387233734130859375,
"max_lat": 46.37545329999999665915311197750270366668701171875,
"max_lon": 142.700614999999999099600245244801044464111328125
},
"zone_id": "russia_prigorodnoye"
}- Duration: 3h 11m
- Radius: 657 meters
- Data Points: 22 AIS positions
- Centroid: 46.3737, 142.6984
- Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
"radius_m": 656.6000000000000227373675443232059478759765625,
"duration_minutes": 191.400000000000005684341886080801486968994140625,
"points": 22,
"centroid": {
"lat": 46.37372538181818271141310106031596660614013671875,
"lon": 142.698370304545505860005505383014678955078125
},
"bbox": {
"min_lat": 46.368026700000001483203959651291370391845703125,
"min_lon": 142.694753300000002127490006387233734130859375,
"max_lat": 46.37545329999999665915311197750270366668701171875,
"max_lon": 142.700614999999999099600245244801044464111328125
},
"zone_id": "russia_sakhalin_south"
}- Minimum Distance: 10 meters
- Average Distance: 20 meters
- Duration: 3h 41m
- Period: 2026-10-07T19:15:57+00:00 to 2026-10-07T22:57:51+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Prigorodnoye/Sakhalin LNG
Confidence Analysis
High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 20m) for 222 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 Prigorodnoye/Sakhalin LNG, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 10m, avg 20m |
| Duration | 25/25 | Duration 222 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±4m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Prigorodnoye/Sakhalin LNG |
🛰️ 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": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"vessel_b": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"min_distance_m": 9.699999999999999289457264239899814128875732421875,
"avg_distance_m": 19.5,
"distance_consistency_m": 3.899999999999999911182158029987476766109466552734375,
"duration_minutes": 221.900000000000005684341886080801486968994140625,
"overlap_duration_s": 13314,
"speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
"speed_b_avg": 0.0899999999999999966693309261245303787291049957275390625,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"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": "2026-10-07T19:15:57+00:00",
"end": "2026-10-07T22:57:51+00:00"
},
"points_count": {
"vessel_a": 18,
"vessel_b": 18
},
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 10m, avg 20m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 222 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b14m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
}
},
"summary": "High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 20m) for 222 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 Prigorodnoye\/Sakhalin LNG, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 46.3736904000000009773430065251886844635009765625,
"lon": 142.698874399999994011523085646331310272216796875
},
"time_window": {
"start_ts": "2026-10-07T19:15:57+00:00",
"end_ts": "2026-10-07T22:57:51+00:00"
},
"searched_at": "2026-10-08T01:45:01.368412+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 10 meters
- Average Distance: 20 meters
- Duration: 3h 41m
- Period: 2026-10-07T19:15:57+00:00 to 2026-10-07T22:57:51+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Sakhalin South Approach
Confidence Analysis
High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 20m) for 222 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 Sakhalin South Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 10m, avg 20m |
| Duration | 25/25 | Duration 222 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±4m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Sakhalin South 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": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"vessel_b": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"min_distance_m": 9.699999999999999289457264239899814128875732421875,
"avg_distance_m": 19.5,
"distance_consistency_m": 3.899999999999999911182158029987476766109466552734375,
"duration_minutes": 221.900000000000005684341886080801486968994140625,
"overlap_duration_s": 13314,
"speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
"speed_b_avg": 0.0899999999999999966693309261245303787291049957275390625,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"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": "2026-10-07T19:15:57+00:00",
"end": "2026-10-07T22:57:51+00:00"
},
"points_count": {
"vessel_a": 18,
"vessel_b": 18
},
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 10m, avg 20m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 222 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b14m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Sakhalin South Approach"
}
},
"summary": "High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 20m) for 222 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 Sakhalin South Approach, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 46.3736904000000009773430065251886844635009765625,
"lon": 142.698874399999994011523085646331310272216796875
},
"time_window": {
"start_ts": "2026-10-07T19:15:57+00:00",
"end_ts": "2026-10-07T22:57:51+00:00"
},
"searched_at": "2026-10-08T01:45:04.014358+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Sakhalin South Approach
- Duration: 5h 4m
- Data Points: 42 AIS positions
- Period: 2026-10-07T19:00:53+00:00 to 2026-10-08T00:05:39+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"dwell_minutes": 304.80000000000001136868377216160297393798828125,
"points_in_zone": 42,
"first_point": {
"ts": "2026-10-07T19:00:53+00:00",
"lat": 46.37251499999999992951416061259806156158447265625,
"lon": 142.698274999999995316102285869419574737548828125
},
"last_point": {
"ts": "2026-10-08T00:05:39+00:00",
"lat": 46.262623300000001336229615844786167144775390625,
"lon": 142.731081700000004275352694094181060791015625
}
}- Zone: Prigorodnoye/Sakhalin LNG
- Duration: 5h 4m
- Data Points: 42 AIS positions
- Period: 2026-10-07T19:00:53+00:00 to 2026-10-08T00:05:39+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"dwell_minutes": 304.80000000000001136868377216160297393798828125,
"points_in_zone": 42,
"first_point": {
"ts": "2026-10-07T19:00:53+00:00",
"lat": 46.37251499999999992951416061259806156158447265625,
"lon": 142.698274999999995316102285869419574737548828125
},
"last_point": {
"ts": "2026-10-08T00:05:39+00:00",
"lat": 46.262623300000001336229615844786167144775390625,
"lon": 142.731081700000004275352694094181060791015625
}
}- Duration: 4h 29m
- Radius: 639 meters
- Data Points: 26 AIS positions
- Centroid: 46.3736, 142.6984
- Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
"radius_m": 639.1000000000000227373675443232059478759765625,
"duration_minutes": 269.3999999999999772626324556767940521240234375,
"points": 26,
"centroid": {
"lat": 46.37356083461538247547650826163589954376220703125,
"lon": 142.6983647423077172788907773792743682861328125
},
"bbox": {
"min_lat": 46.368026700000001483203959651291370391845703125,
"min_lon": 142.694753300000002127490006387233734130859375,
"max_lat": 46.37545329999999665915311197750270366668701171875,
"max_lon": 142.700614999999999099600245244801044464111328125
},
"zone_id": "russia_prigorodnoye"
}- Duration: 4h 29m
- Radius: 639 meters
- Data Points: 26 AIS positions
- Centroid: 46.3736, 142.6984
- Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
"radius_m": 639.1000000000000227373675443232059478759765625,
"duration_minutes": 269.3999999999999772626324556767940521240234375,
"points": 26,
"centroid": {
"lat": 46.37356083461538247547650826163589954376220703125,
"lon": 142.6983647423077172788907773792743682861328125
},
"bbox": {
"min_lat": 46.368026700000001483203959651291370391845703125,
"min_lon": 142.694753300000002127490006387233734130859375,
"max_lat": 46.37545329999999665915311197750270366668701171875,
"max_lon": 142.700614999999999099600245244801044464111328125
},
"zone_id": "russia_sakhalin_south"
}- Minimum Distance: 10 meters
- Average Distance: 19 meters
- Duration: 4h 53m
- Period: 2026-10-07T18:03:56+00:00 to 2026-10-07T22:57:51+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Prigorodnoye/Sakhalin LNG
Confidence Analysis
High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 19m) for 294 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 Prigorodnoye/Sakhalin LNG, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 10m, avg 19m |
| Duration | 25/25 | Duration 294 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: Prigorodnoye/Sakhalin LNG |
🛰️ 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": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"vessel_b": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"min_distance_m": 9.699999999999999289457264239899814128875732421875,
"avg_distance_m": 19.39999999999999857891452847979962825775146484375,
"distance_consistency_m": 3.29999999999999982236431605997495353221893310546875,
"duration_minutes": 293.8999999999999772626324556767940521240234375,
"overlap_duration_s": 17635,
"speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0.070000000000000006661338147750939242541790008544921875,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.070000000000000006661338147750939242541790008544921875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-10-07T18:03:56+00:00",
"end": "2026-10-07T22:57:51+00:00"
},
"points_count": {
"vessel_a": 27,
"vessel_b": 27
},
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 10m, avg 19m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 294 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: Prigorodnoye\/Sakhalin LNG"
}
},
"summary": "High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 19m) for 294 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 Prigorodnoye\/Sakhalin LNG, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 46.37336619999999953734004520811140537261962890625,
"lon": 142.698718399999989969728630967438220977783203125
},
"time_window": {
"start_ts": "2026-10-07T18:03:56+00:00",
"end_ts": "2026-10-07T22:57:51+00:00"
},
"searched_at": "2026-10-08T00:30:06.794470+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 10 meters
- Average Distance: 19 meters
- Duration: 4h 53m
- Period: 2026-10-07T18:03:56+00:00 to 2026-10-07T22:57:51+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Sakhalin South Approach
Confidence Analysis
High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 19m) for 294 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 Sakhalin South Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 10m, avg 19m |
| Duration | 25/25 | Duration 294 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: Sakhalin South 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": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"vessel_b": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"min_distance_m": 9.699999999999999289457264239899814128875732421875,
"avg_distance_m": 19.39999999999999857891452847979962825775146484375,
"distance_consistency_m": 3.29999999999999982236431605997495353221893310546875,
"duration_minutes": 293.8999999999999772626324556767940521240234375,
"overlap_duration_s": 17635,
"speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0.070000000000000006661338147750939242541790008544921875,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.070000000000000006661338147750939242541790008544921875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-10-07T18:03:56+00:00",
"end": "2026-10-07T22:57:51+00:00"
},
"points_count": {
"vessel_a": 27,
"vessel_b": 27
},
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 10m, avg 19m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 294 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: Sakhalin South Approach"
}
},
"summary": "High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 19m) for 294 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 Sakhalin South Approach, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 46.37336619999999953734004520811140537261962890625,
"lon": 142.698718399999989969728630967438220977783203125
},
"time_window": {
"start_ts": "2026-10-07T18:03:56+00:00",
"end_ts": "2026-10-07T22:57:51+00:00"
},
"searched_at": "2026-10-08T00:30:11.384610+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Sakhalin South Approach
- Duration: 6h 1m
- Data Points: 50 AIS positions
- Period: 2026-10-07T18:03:56+00:00 to 2026-10-08T00:05:39+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"dwell_minutes": 361.69999999999998863131622783839702606201171875,
"points_in_zone": 50,
"first_point": {
"ts": "2026-10-07T18:03:56+00:00",
"lat": 46.37275170000000201753209694288671016693115234375,
"lon": 142.698388300000004846879164688289165496826171875
},
"last_point": {
"ts": "2026-10-08T00:05:39+00:00",
"lat": 46.262623300000001336229615844786167144775390625,
"lon": 142.731081700000004275352694094181060791015625
}
}- Zone: Prigorodnoye/Sakhalin LNG
- Duration: 6h 1m
- Data Points: 50 AIS positions
- Period: 2026-10-07T18:03:56+00:00 to 2026-10-08T00:05:39+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"dwell_minutes": 361.69999999999998863131622783839702606201171875,
"points_in_zone": 50,
"first_point": {
"ts": "2026-10-07T18:03:56+00:00",
"lat": 46.37275170000000201753209694288671016693115234375,
"lon": 142.698388300000004846879164688289165496826171875
},
"last_point": {
"ts": "2026-10-08T00:05:39+00:00",
"lat": 46.262623300000001336229615844786167144775390625,
"lon": 142.731081700000004275352694094181060791015625
}
}- Duration: 5h 26m
- Radius: 617 meters
- Data Points: 34 AIS positions
- Centroid: 46.3733, 142.6984
- Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
"radius_m": 616.6000000000000227373675443232059478759765625,
"duration_minutes": 326.3999999999999772626324556767940521240234375,
"points": 34,
"centroid": {
"lat": 46.3733493647058736542021506465971469879150390625,
"lon": 142.69836024411762309682671912014484405517578125
},
"bbox": {
"min_lat": 46.368026700000001483203959651291370391845703125,
"min_lon": 142.694753300000002127490006387233734130859375,
"max_lat": 46.37545329999999665915311197750270366668701171875,
"max_lon": 142.700614999999999099600245244801044464111328125
},
"zone_id": "russia_prigorodnoye"
}- Duration: 5h 26m
- Radius: 617 meters
- Data Points: 34 AIS positions
- Centroid: 46.3733, 142.6984
- Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
"radius_m": 616.6000000000000227373675443232059478759765625,
"duration_minutes": 326.3999999999999772626324556767940521240234375,
"points": 34,
"centroid": {
"lat": 46.3733493647058736542021506465971469879150390625,
"lon": 142.69836024411762309682671912014484405517578125
},
"bbox": {
"min_lat": 46.368026700000001483203959651291370391845703125,
"min_lon": 142.694753300000002127490006387233734130859375,
"max_lat": 46.37545329999999665915311197750270366668701171875,
"max_lon": 142.700614999999999099600245244801044464111328125
},
"zone_id": "russia_sakhalin_south"
}- Minimum Distance: 11 meters
- Average Distance: 20 meters
- Duration: 2h 32m
- Period: 2026-10-07T17:05:38+00:00 to 2026-10-07T19:37:57+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Prigorodnoye/Sakhalin LNG
Confidence Analysis
High-confidence STS candidate. Two tankers (ORIS and GLORISEA) maintained close proximity (min 10m, avg 20m) for 152 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 Prigorodnoye/Sakhalin LNG, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 10m, avg 20m |
| Duration | 25/25 | Duration 152 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±6m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Prigorodnoye/Sakhalin LNG |
🛰️ 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": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"vessel_b": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"min_distance_m": 10.5,
"avg_distance_m": 20.199999999999999289457264239899814128875732421875,
"distance_consistency_m": 6.0999999999999996447286321199499070644378662109375,
"duration_minutes": 152.30000000000001136868377216160297393798828125,
"overlap_duration_s": 9139,
"speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0,
"speed_b_std": 0.01000000000000000020816681711721685132943093776702880859375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-10-07T17:05:38+00:00",
"end": "2026-10-07T19:37:57+00:00"
},
"points_count": {
"vessel_a": 50,
"vessel_b": 50
},
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 10m, avg 20m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 152 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b16m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
}
},
"summary": "High-confidence STS candidate. Two tankers (ORIS and GLORISEA) maintained close proximity (min 10m, avg 20m) for 152 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 Prigorodnoye\/Sakhalin LNG, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 46.37286370000000346180968335829675197601318359375,
"lon": 142.69847920000000840445864014327526092529296875
},
"time_window": {
"start_ts": "2026-10-07T17:05:38+00:00",
"end_ts": "2026-10-07T19:37:57+00:00"
},
"searched_at": "2026-10-07T23:45:01.605936+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 11 meters
- Average Distance: 20 meters
- Duration: 2h 32m
- Period: 2026-10-07T17:05:38+00:00 to 2026-10-07T19:37:57+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Sakhalin South Approach
Confidence Analysis
High-confidence STS candidate. Two tankers (ORIS and GLORISEA) maintained close proximity (min 10m, avg 20m) for 152 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 Sakhalin South Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 10m, avg 20m |
| Duration | 25/25 | Duration 152 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±6m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Sakhalin South 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": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"vessel_b": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"min_distance_m": 10.5,
"avg_distance_m": 20.199999999999999289457264239899814128875732421875,
"distance_consistency_m": 6.0999999999999996447286321199499070644378662109375,
"duration_minutes": 152.30000000000001136868377216160297393798828125,
"overlap_duration_s": 9139,
"speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0,
"speed_b_std": 0.01000000000000000020816681711721685132943093776702880859375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-10-07T17:05:38+00:00",
"end": "2026-10-07T19:37:57+00:00"
},
"points_count": {
"vessel_a": 50,
"vessel_b": 50
},
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 10m, avg 20m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 152 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b16m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Sakhalin South Approach"
}
},
"summary": "High-confidence STS candidate. Two tankers (ORIS and GLORISEA) maintained close proximity (min 10m, avg 20m) for 152 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 Sakhalin South Approach, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 46.37286370000000346180968335829675197601318359375,
"lon": 142.69847920000000840445864014327526092529296875
},
"time_window": {
"start_ts": "2026-10-07T17:05:38+00:00",
"end_ts": "2026-10-07T19:37:57+00:00"
},
"searched_at": "2026-10-07T23:45:04.263601+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Prigorodnoye/Sakhalin LNG
- Duration: 6h 31m
- Data Points: 55 AIS positions
- Period: 2026-10-07T17:33:55+00:00 to 2026-10-08T00:05:39+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"dwell_minutes": 391.69999999999998863131622783839702606201171875,
"points_in_zone": 55,
"first_point": {
"ts": "2026-10-07T17:33:55+00:00",
"lat": 46.37290500000000292857293970882892608642578125,
"lon": 142.698499999999995679900166578590869903564453125
},
"last_point": {
"ts": "2026-10-08T00:05:39+00:00",
"lat": 46.262623300000001336229615844786167144775390625,
"lon": 142.731081700000004275352694094181060791015625
}
}- Zone: Sakhalin South Approach
- Duration: 6h 31m
- Data Points: 55 AIS positions
- Period: 2026-10-07T17:33:55+00:00 to 2026-10-08T00:05:39+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"dwell_minutes": 391.69999999999998863131622783839702606201171875,
"points_in_zone": 55,
"first_point": {
"ts": "2026-10-07T17:33:55+00:00",
"lat": 46.37290500000000292857293970882892608642578125,
"lon": 142.698499999999995679900166578590869903564453125
},
"last_point": {
"ts": "2026-10-08T00:05:39+00:00",
"lat": 46.262623300000001336229615844786167144775390625,
"lon": 142.731081700000004275352694094181060791015625
}
}- Duration: 6h 26m
- Radius: 608 meters
- Data Points: 41 AIS positions
- Centroid: 46.3733, 142.6984
- Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
"radius_m": 608.3999999999999772626324556767940521240234375,
"duration_minutes": 386.3999999999999772626324556767940521240234375,
"points": 41,
"centroid": {
"lat": 46.3732780121951151386383571662008762359619140625,
"lon": 142.6983878829267951005022041499614715576171875
},
"bbox": {
"min_lat": 46.368026700000001483203959651291370391845703125,
"min_lon": 142.694753300000002127490006387233734130859375,
"max_lat": 46.37545329999999665915311197750270366668701171875,
"max_lon": 142.700614999999999099600245244801044464111328125
},
"zone_id": "russia_prigorodnoye"
}- Duration: 6h 26m
- Radius: 608 meters
- Data Points: 41 AIS positions
- Centroid: 46.3733, 142.6984
- Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
"radius_m": 608.3999999999999772626324556767940521240234375,
"duration_minutes": 386.3999999999999772626324556767940521240234375,
"points": 41,
"centroid": {
"lat": 46.3732780121951151386383571662008762359619140625,
"lon": 142.6983878829267951005022041499614715576171875
},
"bbox": {
"min_lat": 46.368026700000001483203959651291370391845703125,
"min_lon": 142.694753300000002127490006387233734130859375,
"max_lat": 46.37545329999999665915311197750270366668701171875,
"max_lon": 142.700614999999999099600245244801044464111328125
},
"zone_id": "russia_sakhalin_south"
}- Minimum Distance: 10 meters
- Average Distance: 19 meters
- Duration: 6h 3m
- Period: 2026-10-07T16:54:51+00:00 to 2026-10-07T22:57:51+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Prigorodnoye/Sakhalin LNG
Confidence Analysis
High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 19m) for 363 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 Prigorodnoye/Sakhalin LNG, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 10m, avg 19m |
| Duration | 25/25 | Duration 363 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: Prigorodnoye/Sakhalin LNG |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"vessel_b": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"min_distance_m": 9.699999999999999289457264239899814128875732421875,
"avg_distance_m": 19.39999999999999857891452847979962825775146484375,
"distance_consistency_m": 3,
"duration_minutes": 363,
"overlap_duration_s": 21780,
"speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.059999999999999997779553950749686919152736663818359375,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-10-07T16:54:51+00:00",
"end": "2026-10-07T22:57:51+00:00"
},
"points_count": {
"vessel_a": 35,
"vessel_b": 35
},
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 10m, avg 19m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 363 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: Prigorodnoye\/Sakhalin LNG"
}
},
"summary": "High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 19m) for 363 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 Prigorodnoye\/Sakhalin LNG, a known STS activity area."
}
}- Minimum Distance: 10 meters
- Average Distance: 19 meters
- Duration: 6h 3m
- Period: 2026-10-07T16:54:51+00:00 to 2026-10-07T22:57:51+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Sakhalin South Approach
Confidence Analysis
High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 19m) for 363 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 Sakhalin South Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 10m, avg 19m |
| Duration | 25/25 | Duration 363 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: Sakhalin South Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"vessel_b": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"min_distance_m": 9.699999999999999289457264239899814128875732421875,
"avg_distance_m": 19.39999999999999857891452847979962825775146484375,
"distance_consistency_m": 3,
"duration_minutes": 363,
"overlap_duration_s": 21780,
"speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.059999999999999997779553950749686919152736663818359375,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-10-07T16:54:51+00:00",
"end": "2026-10-07T22:57:51+00:00"
},
"points_count": {
"vessel_a": 35,
"vessel_b": 35
},
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 10m, avg 19m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 363 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: Sakhalin South Approach"
}
},
"summary": "High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 19m) for 363 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 Sakhalin South Approach, a known STS activity area."
}
}- Zone: Prigorodnoye/Sakhalin LNG
- Duration: 6h 31m
- Data Points: 41 AIS positions
- Period: 2026-10-07T16:54:51+00:00 to 2026-10-07T23:26:11+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"dwell_minutes": 391.30000000000001136868377216160297393798828125,
"points_in_zone": 41,
"first_point": {
"ts": "2026-10-07T16:54:51+00:00",
"lat": 46.37300499999999914280124357901513576507568359375,
"lon": 142.69861670000000231084413826465606689453125
},
"last_point": {
"ts": "2026-10-07T23:26:11+00:00",
"lat": 46.37402329999999750498318462632596492767333984375,
"lon": 142.698376700000011396696208976209163665771484375
}
}- Zone: Sakhalin South Approach
- Duration: 6h 31m
- Data Points: 41 AIS positions
- Period: 2026-10-07T16:54:51+00:00 to 2026-10-07T23:26:11+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"dwell_minutes": 391.30000000000001136868377216160297393798828125,
"points_in_zone": 41,
"first_point": {
"ts": "2026-10-07T16:54:51+00:00",
"lat": 46.37300499999999914280124357901513576507568359375,
"lon": 142.69861670000000231084413826465606689453125
},
"last_point": {
"ts": "2026-10-07T23:26:11+00:00",
"lat": 46.37402329999999750498318462632596492767333984375,
"lon": 142.698376700000011396696208976209163665771484375
}
}- Duration: 6h 31m
- Radius: 308 meters
- Data Points: 41 AIS positions
- Centroid: 46.3734, 142.6983
- Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
"radius_m": 308.1000000000000227373675443232059478759765625,
"duration_minutes": 391.30000000000001136868377216160297393798828125,
"points": 41,
"centroid": {
"lat": 46.3733994341463358068722300231456756591796875,
"lon": 142.698339143902416026321589015424251556396484375
},
"bbox": {
"min_lat": 46.37251499999999992951416061259806156158447265625,
"min_lon": 142.694753300000002127490006387233734130859375,
"max_lat": 46.37545329999999665915311197750270366668701171875,
"max_lon": 142.699064999999990277501638047397136688232421875
},
"zone_id": "russia_prigorodnoye"
}- Duration: 6h 31m
- Radius: 308 meters
- Data Points: 41 AIS positions
- Centroid: 46.3734, 142.6983
- Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
"radius_m": 308.1000000000000227373675443232059478759765625,
"duration_minutes": 391.30000000000001136868377216160297393798828125,
"points": 41,
"centroid": {
"lat": 46.3733994341463358068722300231456756591796875,
"lon": 142.698339143902416026321589015424251556396484375
},
"bbox": {
"min_lat": 46.37251499999999992951416061259806156158447265625,
"min_lon": 142.694753300000002127490006387233734130859375,
"max_lat": 46.37545329999999665915311197750270366668701171875,
"max_lon": 142.699064999999990277501638047397136688232421875
},
"zone_id": "russia_sakhalin_south"
}- Minimum Distance: 11 meters
- Average Distance: 20 meters
- Duration: 3h 42m
- Period: 2026-10-07T15:55:28+00:00 to 2026-10-07T19:37:57+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Prigorodnoye/Sakhalin LNG
Confidence Analysis
High-confidence STS candidate. Two tankers (ORIS and GLORISEA) maintained close proximity (min 10m, avg 20m) for 222 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 Prigorodnoye/Sakhalin LNG, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 10m, avg 20m |
| Duration | 25/25 | Duration 222 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±6m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Prigorodnoye/Sakhalin LNG |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"vessel_b": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"min_distance_m": 10.5,
"avg_distance_m": 20,
"distance_consistency_m": 5.9000000000000003552713678800500929355621337890625,
"duration_minutes": 222.5,
"overlap_duration_s": 13349,
"speed_a_avg": 0.059999999999999997779553950749686919152736663818359375,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
"speed_b_std": 0.0299999999999999988897769753748434595763683319091796875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.059999999999999997779553950749686919152736663818359375,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-10-07T15:55:28+00:00",
"end": "2026-10-07T19:37:57+00:00"
},
"points_count": {
"vessel_a": 67,
"vessel_b": 67
},
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 10m, avg 20m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 222 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b16m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
}
},
"summary": "High-confidence STS candidate. Two tankers (ORIS and GLORISEA) maintained close proximity (min 10m, avg 20m) for 222 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 Prigorodnoye\/Sakhalin LNG, a known STS activity area."
}
}- Minimum Distance: 11 meters
- Average Distance: 20 meters
- Duration: 3h 42m
- Period: 2026-10-07T15:55:28+00:00 to 2026-10-07T19:37:57+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Sakhalin South Approach
Confidence Analysis
High-confidence STS candidate. Two tankers (ORIS and GLORISEA) maintained close proximity (min 10m, avg 20m) for 222 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 Sakhalin South Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 10m, avg 20m |
| Duration | 25/25 | Duration 222 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±6m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Sakhalin South Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"vessel_b": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"min_distance_m": 10.5,
"avg_distance_m": 20,
"distance_consistency_m": 5.9000000000000003552713678800500929355621337890625,
"duration_minutes": 222.5,
"overlap_duration_s": 13349,
"speed_a_avg": 0.059999999999999997779553950749686919152736663818359375,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
"speed_b_std": 0.0299999999999999988897769753748434595763683319091796875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.059999999999999997779553950749686919152736663818359375,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-10-07T15:55:28+00:00",
"end": "2026-10-07T19:37:57+00:00"
},
"points_count": {
"vessel_a": 67,
"vessel_b": 67
},
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 10m, avg 20m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 222 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b16m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Sakhalin South Approach"
}
},
"summary": "High-confidence STS candidate. Two tankers (ORIS and GLORISEA) maintained close proximity (min 10m, avg 20m) for 222 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 Sakhalin South Approach, a known STS activity area."
}
}- Zone: Prigorodnoye/Sakhalin LNG
- Duration: 6h 30m
- Data Points: 31 AIS positions
- Period: 2026-10-07T15:12:50+00:00 to 2026-10-07T21:42:52+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"dwell_minutes": 390,
"points_in_zone": 31,
"first_point": {
"ts": "2026-10-07T15:12:50+00:00",
"lat": 46.37364000000000174850356415845453739166259765625,
"lon": 142.698688299999986384136718697845935821533203125
},
"last_point": {
"ts": "2026-10-07T21:42:52+00:00",
"lat": 46.37382170000000058962541515938937664031982421875,
"lon": 142.6990250000000060026650317013263702392578125
}
}- Zone: Sakhalin South Approach
- Duration: 6h 30m
- Data Points: 31 AIS positions
- Period: 2026-10-07T15:12:50+00:00 to 2026-10-07T21:42:52+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"dwell_minutes": 390,
"points_in_zone": 31,
"first_point": {
"ts": "2026-10-07T15:12:50+00:00",
"lat": 46.37364000000000174850356415845453739166259765625,
"lon": 142.698688299999986384136718697845935821533203125
},
"last_point": {
"ts": "2026-10-07T21:42:52+00:00",
"lat": 46.37382170000000058962541515938937664031982421875,
"lon": 142.6990250000000060026650317013263702392578125
}
}- Duration: 6h 30m
- Radius: 98 meters
- Data Points: 31 AIS positions
- Centroid: 46.3730, 142.6986
- Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
"radius_m": 98.099999999999994315658113919198513031005859375,
"duration_minutes": 390,
"points": 31,
"centroid": {
"lat": 46.37300231612902479128024424426257610321044921875,
"lon": 142.6985515000000077634467743337154388427734375
},
"bbox": {
"min_lat": 46.37251499999999992951416061259806156158447265625,
"min_lon": 142.69823999999999841747921891510486602783203125,
"max_lat": 46.37382170000000058962541515938937664031982421875,
"max_lon": 142.6990250000000060026650317013263702392578125
},
"zone_id": "russia_prigorodnoye"
}- Duration: 6h 30m
- Radius: 98 meters
- Data Points: 31 AIS positions
- Centroid: 46.3730, 142.6986
- Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
"radius_m": 98.099999999999994315658113919198513031005859375,
"duration_minutes": 390,
"points": 31,
"centroid": {
"lat": 46.37300231612902479128024424426257610321044921875,
"lon": 142.6985515000000077634467743337154388427734375
},
"bbox": {
"min_lat": 46.37251499999999992951416061259806156158447265625,
"min_lon": 142.69823999999999841747921891510486602783203125,
"max_lat": 46.37382170000000058962541515938937664031982421875,
"max_lon": 142.6990250000000060026650317013263702392578125
},
"zone_id": "russia_sakhalin_south"
}- Minimum Distance: 11 meters
- Average Distance: 20 meters
- Duration: 6h 6m
- Period: 2026-10-07T14:12:51+00:00 to 2026-10-07T20:18:52+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Prigorodnoye/Sakhalin LNG
Confidence Analysis
High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 11m, avg 20m) for 366 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 Prigorodnoye/Sakhalin LNG, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 11m, avg 20m |
| Duration | 25/25 | Duration 366 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: Prigorodnoye/Sakhalin LNG |
🛰️ 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": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"vessel_b": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"min_distance_m": 10.699999999999999289457264239899814128875732421875,
"avg_distance_m": 19.89999999999999857891452847979962825775146484375,
"distance_consistency_m": 3.100000000000000088817841970012523233890533447265625,
"duration_minutes": 366,
"overlap_duration_s": 21961,
"speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
"speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
"speed_b_avg": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-10-07T14:12:51+00:00",
"end": "2026-10-07T20:18:52+00:00"
},
"points_count": {
"vessel_a": 33,
"vessel_b": 33
},
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 11m, avg 20m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 366 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: Prigorodnoye\/Sakhalin LNG"
}
},
"summary": "High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 11m, avg 20m) for 366 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 Prigorodnoye\/Sakhalin LNG, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 46.37328140000000331610863213427364826202392578125,
"lon": 142.698461600000001681110006757080554962158203125
},
"time_window": {
"start_ts": "2026-10-07T14:12:51+00:00",
"end_ts": "2026-10-07T20:18:52+00:00"
},
"searched_at": "2026-10-07T20:45:01.384284+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 11 meters
- Average Distance: 20 meters
- Duration: 6h 6m
- Period: 2026-10-07T14:12:51+00:00 to 2026-10-07T20:18:52+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Sakhalin South Approach
Confidence Analysis
High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 11m, avg 20m) for 366 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 Sakhalin South Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 11m, avg 20m |
| Duration | 25/25 | Duration 366 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: Sakhalin South 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": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"vessel_b": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"min_distance_m": 10.699999999999999289457264239899814128875732421875,
"avg_distance_m": 19.89999999999999857891452847979962825775146484375,
"distance_consistency_m": 3.100000000000000088817841970012523233890533447265625,
"duration_minutes": 366,
"overlap_duration_s": 21961,
"speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
"speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
"speed_b_avg": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-10-07T14:12:51+00:00",
"end": "2026-10-07T20:18:52+00:00"
},
"points_count": {
"vessel_a": 33,
"vessel_b": 33
},
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 11m, avg 20m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 366 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: Sakhalin South Approach"
}
},
"summary": "High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 11m, avg 20m) for 366 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 Sakhalin South Approach, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 46.37328140000000331610863213427364826202392578125,
"lon": 142.698461600000001681110006757080554962158203125
},
"time_window": {
"start_ts": "2026-10-07T14:12:51+00:00",
"end_ts": "2026-10-07T20:18:52+00:00"
},
"searched_at": "2026-10-07T20:45:04.532346+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Sakhalin South Approach
- Duration: 6h 30m
- Data Points: 32 AIS positions
- Period: 2026-10-07T14:39:52+00:00 to 2026-10-07T21:09:56+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"dwell_minutes": 390.1000000000000227373675443232059478759765625,
"points_in_zone": 32,
"first_point": {
"ts": "2026-10-07T14:39:52+00:00",
"lat": 46.37443999999999988403942552395164966583251953125,
"lon": 142.698258299999992004813975654542446136474609375
},
"last_point": {
"ts": "2026-10-07T21:09:56+00:00",
"lat": 46.373598299999997607301338575780391693115234375,
"lon": 142.69893830000000889413058757781982421875
}
}- Zone: Prigorodnoye/Sakhalin LNG
- Duration: 6h 30m
- Data Points: 32 AIS positions
- Period: 2026-10-07T14:39:52+00:00 to 2026-10-07T21:09:56+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"dwell_minutes": 390.1000000000000227373675443232059478759765625,
"points_in_zone": 32,
"first_point": {
"ts": "2026-10-07T14:39:52+00:00",
"lat": 46.37443999999999988403942552395164966583251953125,
"lon": 142.698258299999992004813975654542446136474609375
},
"last_point": {
"ts": "2026-10-07T21:09:56+00:00",
"lat": 46.373598299999997607301338575780391693115234375,
"lon": 142.69893830000000889413058757781982421875
}
}- Duration: 6h 30m
- Radius: 152 meters
- Data Points: 32 AIS positions
- Centroid: 46.3731, 142.6985
- Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
"radius_m": 151.80000000000001136868377216160297393798828125,
"duration_minutes": 390.1000000000000227373675443232059478759765625,
"points": 32,
"centroid": {
"lat": 46.3730843781250001711669028736650943756103515625,
"lon": 142.698499890625015495970728807151317596435546875
},
"bbox": {
"min_lat": 46.37251499999999992951416061259806156158447265625,
"min_lon": 142.69823999999999841747921891510486602783203125,
"max_lat": 46.37443999999999988403942552395164966583251953125,
"max_lon": 142.69893830000000889413058757781982421875
},
"zone_id": "russia_prigorodnoye"
}- Duration: 6h 30m
- Radius: 152 meters
- Data Points: 32 AIS positions
- Centroid: 46.3731, 142.6985
- Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
"radius_m": 151.80000000000001136868377216160297393798828125,
"duration_minutes": 390.1000000000000227373675443232059478759765625,
"points": 32,
"centroid": {
"lat": 46.3730843781250001711669028736650943756103515625,
"lon": 142.698499890625015495970728807151317596435546875
},
"bbox": {
"min_lat": 46.37251499999999992951416061259806156158447265625,
"min_lon": 142.69823999999999841747921891510486602783203125,
"max_lat": 46.37443999999999988403942552395164966583251953125,
"max_lon": 142.69893830000000889413058757781982421875
},
"zone_id": "russia_sakhalin_south"
}- Minimum Distance: 11 meters
- Average Distance: 20 meters
- Duration: 6 hours
- Period: 2026-10-07T13:30:51+00:00 to 2026-10-07T19:30:53+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Prigorodnoye/Sakhalin LNG
Confidence Analysis
High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 11m, avg 20m) for 360 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 Prigorodnoye/Sakhalin LNG, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 11m, avg 20m |
| Duration | 25/25 | Duration 360 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: Prigorodnoye/Sakhalin LNG |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"vessel_b": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"min_distance_m": 10.699999999999999289457264239899814128875732421875,
"avg_distance_m": 19.800000000000000710542735760100185871124267578125,
"distance_consistency_m": 3.20000000000000017763568394002504646778106689453125,
"duration_minutes": 360,
"overlap_duration_s": 21602,
"speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
"speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
"speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-10-07T13:30:51+00:00",
"end": "2026-10-07T19:30:53+00:00"
},
"points_count": {
"vessel_a": 40,
"vessel_b": 40
},
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 11m, avg 20m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 360 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: Prigorodnoye\/Sakhalin LNG"
}
},
"summary": "High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 11m, avg 20m) for 360 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 Prigorodnoye\/Sakhalin LNG, a known STS activity area."
}
}- Minimum Distance: 11 meters
- Average Distance: 20 meters
- Duration: 6 hours
- Period: 2026-10-07T13:30:51+00:00 to 2026-10-07T19:30:53+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Sakhalin South Approach
Confidence Analysis
High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 11m, avg 20m) for 360 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 Sakhalin South Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 11m, avg 20m |
| Duration | 25/25 | Duration 360 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: Sakhalin South Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"vessel_b": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"min_distance_m": 10.699999999999999289457264239899814128875732421875,
"avg_distance_m": 19.800000000000000710542735760100185871124267578125,
"distance_consistency_m": 3.20000000000000017763568394002504646778106689453125,
"duration_minutes": 360,
"overlap_duration_s": 21602,
"speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
"speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
"speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-10-07T13:30:51+00:00",
"end": "2026-10-07T19:30:53+00:00"
},
"points_count": {
"vessel_a": 40,
"vessel_b": 40
},
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 11m, avg 20m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 360 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: Sakhalin South Approach"
}
},
"summary": "High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 11m, avg 20m) for 360 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 Sakhalin South Approach, a known STS activity area."
}
}- Zone: Sakhalin South Approach
- Duration: 6h 36m
- Data Points: 37 AIS positions
- Period: 2026-10-07T13:42:51+00:00 to 2026-10-07T20:18:52+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"dwell_minutes": 396,
"points_in_zone": 37,
"first_point": {
"ts": "2026-10-07T13:42:51+00:00",
"lat": 46.3745100000000007867129170335829257965087890625,
"lon": 142.69817499999999199644662439823150634765625
},
"last_point": {
"ts": "2026-10-07T20:18:52+00:00",
"lat": 46.37348999999999676902007195167243480682373046875,
"lon": 142.698769999999996116457623429596424102783203125
}
}- Zone: Prigorodnoye/Sakhalin LNG
- Duration: 6h 36m
- Data Points: 37 AIS positions
- Period: 2026-10-07T13:42:51+00:00 to 2026-10-07T20:18:52+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"dwell_minutes": 396,
"points_in_zone": 37,
"first_point": {
"ts": "2026-10-07T13:42:51+00:00",
"lat": 46.3745100000000007867129170335829257965087890625,
"lon": 142.69817499999999199644662439823150634765625
},
"last_point": {
"ts": "2026-10-07T20:18:52+00:00",
"lat": 46.37348999999999676902007195167243480682373046875,
"lon": 142.698769999999996116457623429596424102783203125
}
}- Duration: 6h 36m
- Radius: 150 meters
- Data Points: 37 AIS positions
- Centroid: 46.3734, 142.6984
- Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
"radius_m": 150,
"duration_minutes": 396,
"points": 37,
"centroid": {
"lat": 46.373353921621628614957444369792938232421875,
"lon": 142.698402875675611767292139120399951934814453125
},
"bbox": {
"min_lat": 46.37251499999999992951416061259806156158447265625,
"min_lon": 142.6980432999999948151526041328907012939453125,
"max_lat": 46.3746799999999979036147124134004116058349609375,
"max_lon": 142.698769999999996116457623429596424102783203125
},
"zone_id": "russia_prigorodnoye"
}- Duration: 6h 36m
- Radius: 150 meters
- Data Points: 37 AIS positions
- Centroid: 46.3734, 142.6984
- Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
"radius_m": 150,
"duration_minutes": 396,
"points": 37,
"centroid": {
"lat": 46.373353921621628614957444369792938232421875,
"lon": 142.698402875675611767292139120399951934814453125
},
"bbox": {
"min_lat": 46.37251499999999992951416061259806156158447265625,
"min_lon": 142.6980432999999948151526041328907012939453125,
"max_lat": 46.3746799999999979036147124134004116058349609375,
"max_lon": 142.698769999999996116457623429596424102783203125
},
"zone_id": "russia_sakhalin_south"
}- Minimum Distance: 11 meters
- Average Distance: 20 meters
- Duration: 6h 24m
- Period: 2026-10-07T12:33:48+00:00 to 2026-10-07T18:57:56+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Prigorodnoye/Sakhalin LNG
Confidence Analysis
High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 11m, avg 20m) for 384 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 Prigorodnoye/Sakhalin LNG, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 11m, avg 20m |
| Duration | 25/25 | Duration 384 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: Prigorodnoye/Sakhalin LNG |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"vessel_b": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"min_distance_m": 10.699999999999999289457264239899814128875732421875,
"avg_distance_m": 20,
"distance_consistency_m": 3.399999999999999911182158029987476766109466552734375,
"duration_minutes": 384.1000000000000227373675443232059478759765625,
"overlap_duration_s": 23048,
"speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
"speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
"speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-10-07T12:33:48+00:00",
"end": "2026-10-07T18:57:56+00:00"
},
"points_count": {
"vessel_a": 41,
"vessel_b": 41
},
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 11m, avg 20m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 384 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: Prigorodnoye\/Sakhalin LNG"
}
},
"summary": "High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 11m, avg 20m) for 384 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 Prigorodnoye\/Sakhalin LNG, a known STS activity area."
}
}- Minimum Distance: 11 meters
- Average Distance: 20 meters
- Duration: 6h 24m
- Period: 2026-10-07T12:33:48+00:00 to 2026-10-07T18:57:56+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Sakhalin South Approach
Confidence Analysis
High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 11m, avg 20m) for 384 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 Sakhalin South Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 11m, avg 20m |
| Duration | 25/25 | Duration 384 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: Sakhalin South Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"vessel_b": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"min_distance_m": 10.699999999999999289457264239899814128875732421875,
"avg_distance_m": 20,
"distance_consistency_m": 3.399999999999999911182158029987476766109466552734375,
"duration_minutes": 384.1000000000000227373675443232059478759765625,
"overlap_duration_s": 23048,
"speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
"speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
"speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
"speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-10-07T12:33:48+00:00",
"end": "2026-10-07T18:57:56+00:00"
},
"points_count": {
"vessel_a": 41,
"vessel_b": 41
},
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 11m, avg 20m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 384 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: Sakhalin South Approach"
}
},
"summary": "High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 11m, avg 20m) for 384 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 Sakhalin South Approach, a known STS activity area."
}
}- Zone: Sakhalin South Approach
- Duration: 6h 24m
- Data Points: 41 AIS positions
- Period: 2026-10-07T12:57:50+00:00 to 2026-10-07T19:21:55+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"dwell_minutes": 384.1000000000000227373675443232059478759765625,
"points_in_zone": 41,
"first_point": {
"ts": "2026-10-07T12:57:50+00:00",
"lat": 46.37475830000000343034116667695343494415283203125,
"lon": 142.697869999999994661266100592911243438720703125
},
"last_point": {
"ts": "2026-10-07T19:21:55+00:00",
"lat": 46.37272999999999711917553213424980640411376953125,
"lon": 142.698344999999989113348419778048992156982421875
}
}- Zone: Prigorodnoye/Sakhalin LNG
- Duration: 6h 24m
- Data Points: 41 AIS positions
- Period: 2026-10-07T12:57:50+00:00 to 2026-10-07T19:21:55+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"dwell_minutes": 384.1000000000000227373675443232059478759765625,
"points_in_zone": 41,
"first_point": {
"ts": "2026-10-07T12:57:50+00:00",
"lat": 46.37475830000000343034116667695343494415283203125,
"lon": 142.697869999999994661266100592911243438720703125
},
"last_point": {
"ts": "2026-10-07T19:21:55+00:00",
"lat": 46.37272999999999711917553213424980640411376953125,
"lon": 142.698344999999989113348419778048992156982421875
}
}- Duration: 6h 24m
- Radius: 140 meters
- Data Points: 41 AIS positions
- Centroid: 46.3736, 142.6983
- Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
"radius_m": 140.19999999999998863131622783839702606201171875,
"duration_minutes": 384.1000000000000227373675443232059478759765625,
"points": 41,
"centroid": {
"lat": 46.37356089512194756707685883156955242156982421875,
"lon": 142.69832909999996672922861762344837188720703125
},
"bbox": {
"min_lat": 46.37251499999999992951416061259806156158447265625,
"min_lon": 142.6978467000000136977178044617176055908203125,
"max_lat": 46.3747766999999981862856657244265079498291015625,
"max_lon": 142.6987116999999898325768299400806427001953125
},
"zone_id": "russia_prigorodnoye"
}- Duration: 6h 24m
- Radius: 140 meters
- Data Points: 41 AIS positions
- Centroid: 46.3736, 142.6983
- Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
"radius_m": 140.19999999999998863131622783839702606201171875,
"duration_minutes": 384.1000000000000227373675443232059478759765625,
"points": 41,
"centroid": {
"lat": 46.37356089512194756707685883156955242156982421875,
"lon": 142.69832909999996672922861762344837188720703125
},
"bbox": {
"min_lat": 46.37251499999999992951416061259806156158447265625,
"min_lon": 142.6978467000000136977178044617176055908203125,
"max_lat": 46.3747766999999981862856657244265079498291015625,
"max_lon": 142.6987116999999898325768299400806427001953125
},
"zone_id": "russia_sakhalin_south"
}- Minimum Distance: 10 meters
- Average Distance: 20 meters
- Duration: 6h 24m
- Period: 2026-10-07T11:09:50+00:00 to 2026-10-07T17:33:55+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Prigorodnoye/Sakhalin LNG
Confidence Analysis
High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 20m) for 384 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 Prigorodnoye/Sakhalin LNG, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 10m, avg 20m |
| Duration | 25/25 | Duration 384 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±6m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Prigorodnoye/Sakhalin LNG |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"vessel_b": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"min_distance_m": 10.199999999999999289457264239899814128875732421875,
"avg_distance_m": 20.300000000000000710542735760100185871124267578125,
"distance_consistency_m": 5.79999999999999982236431605997495353221893310546875,
"duration_minutes": 384.1000000000000227373675443232059478759765625,
"overlap_duration_s": 23045,
"speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0.070000000000000006661338147750939242541790008544921875,
"speed_b_std": 0.059999999999999997779553950749686919152736663818359375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.070000000000000006661338147750939242541790008544921875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-10-07T11:09:50+00:00",
"end": "2026-10-07T17:33:55+00:00"
},
"points_count": {
"vessel_a": 43,
"vessel_b": 43
},
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 10m, avg 20m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 384 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b16m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
}
},
"summary": "High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 20m) for 384 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 Prigorodnoye\/Sakhalin LNG, a known STS activity area."
}
}- Minimum Distance: 10 meters
- Average Distance: 20 meters
- Duration: 6h 24m
- Period: 2026-10-07T11:09:50+00:00 to 2026-10-07T17:33:55+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Sakhalin South Approach
Confidence Analysis
High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 20m) for 384 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 Sakhalin South Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 10m, avg 20m |
| Duration | 25/25 | Duration 384 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±6m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Sakhalin South Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"vessel_b": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"min_distance_m": 10.199999999999999289457264239899814128875732421875,
"avg_distance_m": 20.300000000000000710542735760100185871124267578125,
"distance_consistency_m": 5.79999999999999982236431605997495353221893310546875,
"duration_minutes": 384.1000000000000227373675443232059478759765625,
"overlap_duration_s": 23045,
"speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0.070000000000000006661338147750939242541790008544921875,
"speed_b_std": 0.059999999999999997779553950749686919152736663818359375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.070000000000000006661338147750939242541790008544921875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-10-07T11:09:50+00:00",
"end": "2026-10-07T17:33:55+00:00"
},
"points_count": {
"vessel_a": 43,
"vessel_b": 43
},
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 10m, avg 20m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 384 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b16m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Sakhalin South Approach"
}
},
"summary": "High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 20m) for 384 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 Sakhalin South Approach, a known STS activity area."
}
}- Zone: Prigorodnoye/Sakhalin LNG
- Duration: 6h 30m
- Data Points: 45 AIS positions
- Period: 2026-10-07T11:36:52+00:00 to 2026-10-07T18:06:54+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"dwell_minutes": 390,
"points_in_zone": 45,
"first_point": {
"ts": "2026-10-07T11:36:52+00:00",
"lat": 46.3741933000000017273123376071453094482421875,
"lon": 142.695573300000006611298886127769947052001953125
},
"last_point": {
"ts": "2026-10-07T18:06:54+00:00",
"lat": 46.372673300000002427623257972300052642822265625,
"lon": 142.698363300000011122392606921494007110595703125
}
}- Zone: Sakhalin South Approach
- Duration: 6h 30m
- Data Points: 45 AIS positions
- Period: 2026-10-07T11:36:52+00:00 to 2026-10-07T18:06:54+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"dwell_minutes": 390,
"points_in_zone": 45,
"first_point": {
"ts": "2026-10-07T11:36:52+00:00",
"lat": 46.3741933000000017273123376071453094482421875,
"lon": 142.695573300000006611298886127769947052001953125
},
"last_point": {
"ts": "2026-10-07T18:06:54+00:00",
"lat": 46.372673300000002427623257972300052642822265625,
"lon": 142.698363300000011122392606921494007110595703125
}
}- Duration: 6h 30m
- Radius: 195 meters
- Data Points: 45 AIS positions
- Centroid: 46.3740, 142.6981
- Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
"radius_m": 195,
"duration_minutes": 390,
"points": 45,
"centroid": {
"lat": 46.3740093311111110097044729627668857574462890625,
"lon": 142.698093402222212944252532906830310821533203125
},
"bbox": {
"min_lat": 46.372673300000002427623257972300052642822265625,
"min_lon": 142.695573300000006611298886127769947052001953125,
"max_lat": 46.3747766999999981862856657244265079498291015625,
"max_lon": 142.6987116999999898325768299400806427001953125
},
"zone_id": "russia_prigorodnoye"
}- Duration: 6h 30m
- Radius: 195 meters
- Data Points: 45 AIS positions
- Centroid: 46.3740, 142.6981
- Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
"radius_m": 195,
"duration_minutes": 390,
"points": 45,
"centroid": {
"lat": 46.3740093311111110097044729627668857574462890625,
"lon": 142.698093402222212944252532906830310821533203125
},
"bbox": {
"min_lat": 46.372673300000002427623257972300052642822265625,
"min_lon": 142.695573300000006611298886127769947052001953125,
"max_lat": 46.3747766999999981862856657244265079498291015625,
"max_lon": 142.6987116999999898325768299400806427001953125
},
"zone_id": "russia_sakhalin_south"
}- Minimum Distance: 10 meters
- Average Distance: 20 meters
- Duration: 6h 15m
- Period: 2026-10-07T10:39:50+00:00 to 2026-10-07T16:54:51+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Prigorodnoye/Sakhalin LNG
Confidence Analysis
High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 20m) for 375 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 Prigorodnoye/Sakhalin LNG, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 10m, avg 20m |
| Duration | 25/25 | Duration 375 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±6m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Prigorodnoye/Sakhalin LNG |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"vessel_b": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"min_distance_m": 10.199999999999999289457264239899814128875732421875,
"avg_distance_m": 20.300000000000000710542735760100185871124267578125,
"distance_consistency_m": 5.70000000000000017763568394002504646778106689453125,
"duration_minutes": 375,
"overlap_duration_s": 22501,
"speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
"speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-10-07T10:39:50+00:00",
"end": "2026-10-07T16:54:51+00:00"
},
"points_count": {
"vessel_a": 45,
"vessel_b": 45
},
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 10m, avg 20m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 375 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b16m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
}
},
"summary": "High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 20m) for 375 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 Prigorodnoye\/Sakhalin LNG, a known STS activity area."
}
}- Minimum Distance: 10 meters
- Average Distance: 20 meters
- Duration: 6h 15m
- Period: 2026-10-07T10:39:50+00:00 to 2026-10-07T16:54:51+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Sakhalin South Approach
Confidence Analysis
High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 20m) for 375 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 Sakhalin South Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 10m, avg 20m |
| Duration | 25/25 | Duration 375 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±6m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Sakhalin South Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"vessel_b": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"min_distance_m": 10.199999999999999289457264239899814128875732421875,
"avg_distance_m": 20.300000000000000710542735760100185871124267578125,
"distance_consistency_m": 5.70000000000000017763568394002504646778106689453125,
"duration_minutes": 375,
"overlap_duration_s": 22501,
"speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
"speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-10-07T10:39:50+00:00",
"end": "2026-10-07T16:54:51+00:00"
},
"points_count": {
"vessel_a": 45,
"vessel_b": 45
},
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 10m, avg 20m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 375 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b16m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Sakhalin South Approach"
}
},
"summary": "High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 10m, avg 20m) for 375 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 Sakhalin South Approach, a known STS activity area."
}
}- Zone: Prigorodnoye/Sakhalin LNG
- Duration: 6h 30m
- Data Points: 45 AIS positions
- Period: 2026-10-07T10:51:49+00:00 to 2026-10-07T17:21:55+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"dwell_minutes": 390.1000000000000227373675443232059478759765625,
"points_in_zone": 45,
"first_point": {
"ts": "2026-10-07T10:51:49+00:00",
"lat": 46.3733466999999990321157383732497692108154296875,
"lon": 142.694941699999986894908943213522434234619140625
},
"last_point": {
"ts": "2026-10-07T17:21:55+00:00",
"lat": 46.373046700000003284003469161689281463623046875,
"lon": 142.69860330000000203654053620994091033935546875
}
}- Zone: Sakhalin South Approach
- Duration: 6h 30m
- Data Points: 45 AIS positions
- Period: 2026-10-07T10:51:49+00:00 to 2026-10-07T17:21:55+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"dwell_minutes": 390.1000000000000227373675443232059478759765625,
"points_in_zone": 45,
"first_point": {
"ts": "2026-10-07T10:51:49+00:00",
"lat": 46.3733466999999990321157383732497692108154296875,
"lon": 142.694941699999986894908943213522434234619140625
},
"last_point": {
"ts": "2026-10-07T17:21:55+00:00",
"lat": 46.373046700000003284003469161689281463623046875,
"lon": 142.69860330000000203654053620994091033935546875
}
}- Duration: 6h 30m
- Radius: 220 meters
- Data Points: 45 AIS positions
- Centroid: 46.3741, 142.6976
- Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
"radius_m": 220.30000000000001136868377216160297393798828125,
"duration_minutes": 390.1000000000000227373675443232059478759765625,
"points": 45,
"centroid": {
"lat": 46.37412177333333573869822430424392223358154296875,
"lon": 142.69756225777774716334533877670764923095703125
},
"bbox": {
"min_lat": 46.37295999999999907004166743718087673187255859375,
"min_lon": 142.6948849999999993087840266525745391845703125,
"max_lat": 46.3747766999999981862856657244265079498291015625,
"max_lon": 142.6987116999999898325768299400806427001953125
},
"zone_id": "russia_prigorodnoye"
}- Duration: 6h 30m
- Radius: 220 meters
- Data Points: 45 AIS positions
- Centroid: 46.3741, 142.6976
- Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
"radius_m": 220.30000000000001136868377216160297393798828125,
"duration_minutes": 390.1000000000000227373675443232059478759765625,
"points": 45,
"centroid": {
"lat": 46.37412177333333573869822430424392223358154296875,
"lon": 142.69756225777774716334533877670764923095703125
},
"bbox": {
"min_lat": 46.37295999999999907004166743718087673187255859375,
"min_lon": 142.6948849999999993087840266525745391845703125,
"max_lat": 46.3747766999999981862856657244265079498291015625,
"max_lon": 142.6987116999999898325768299400806427001953125
},
"zone_id": "russia_sakhalin_south"
}- Minimum Distance: 4 meters
- Average Distance: 20 meters
- Duration: 6h 9m
- Period: 2026-10-07T09:54:51+00:00 to 2026-10-07T16:03:54+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Prigorodnoye/Sakhalin LNG
Confidence Analysis
High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 4m, avg 20m) for 369 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 Prigorodnoye/Sakhalin LNG, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 4m, avg 20m |
| Duration | 25/25 | Duration 369 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±6m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Prigorodnoye/Sakhalin LNG |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"vessel_b": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"min_distance_m": 4.4000000000000003552713678800500929355621337890625,
"avg_distance_m": 20.199999999999999289457264239899814128875732421875,
"distance_consistency_m": 5.9000000000000003552713678800500929355621337890625,
"duration_minutes": 369.1000000000000227373675443232059478759765625,
"overlap_duration_s": 22143,
"speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
"speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-10-07T09:54:51+00:00",
"end": "2026-10-07T16:03:54+00:00"
},
"points_count": {
"vessel_a": 44,
"vessel_b": 44
},
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 4m, avg 20m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 369 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b16m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
}
},
"summary": "High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 4m, avg 20m) for 369 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 Prigorodnoye\/Sakhalin LNG, a known STS activity area."
}
}- Minimum Distance: 4 meters
- Average Distance: 20 meters
- Duration: 6h 9m
- Period: 2026-10-07T09:54:51+00:00 to 2026-10-07T16:03:54+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Sakhalin South Approach
Confidence Analysis
High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 4m, avg 20m) for 369 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 Sakhalin South Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 4m, avg 20m |
| Duration | 25/25 | Duration 369 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±6m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Sakhalin South Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"vessel_b": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"min_distance_m": 4.4000000000000003552713678800500929355621337890625,
"avg_distance_m": 20.199999999999999289457264239899814128875732421875,
"distance_consistency_m": 5.9000000000000003552713678800500929355621337890625,
"duration_minutes": 369.1000000000000227373675443232059478759765625,
"overlap_duration_s": 22143,
"speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
"speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
},
"vessel_b": {
"avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
"max_sog": 0.200000000000000011102230246251565404236316680908203125
}
},
"time_window": {
"start": "2026-10-07T09:54:51+00:00",
"end": "2026-10-07T16:03:54+00:00"
},
"points_count": {
"vessel_a": 44,
"vessel_b": 44
},
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 4m, avg 20m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 369 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b16m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Sakhalin South Approach"
}
},
"summary": "High-confidence STS candidate. Two tankers (GLORISEA and ORIS) maintained close proximity (min 4m, avg 20m) for 369 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 Sakhalin South Approach, a known STS activity area."
}
}- Zone: Prigorodnoye/Sakhalin LNG
- Duration: 6h 18m
- Data Points: 45 AIS positions
- Period: 2026-10-07T09:54:51+00:00 to 2026-10-07T16:12:53+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"dwell_minutes": 378,
"points_in_zone": 45,
"first_point": {
"ts": "2026-10-07T09:54:51+00:00",
"lat": 46.37279500000000354020812665112316608428955078125,
"lon": 142.694883299999986547845765016973018646240234375
},
"last_point": {
"ts": "2026-10-07T16:12:53+00:00",
"lat": 46.373168300000003227978595532476902008056640625,
"lon": 142.69869330000000218205968849360942840576171875
}
}- Zone: Sakhalin South Approach
- Duration: 6h 18m
- Data Points: 45 AIS positions
- Period: 2026-10-07T09:54:51+00:00 to 2026-10-07T16:12:53+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"dwell_minutes": 378,
"points_in_zone": 45,
"first_point": {
"ts": "2026-10-07T09:54:51+00:00",
"lat": 46.37279500000000354020812665112316608428955078125,
"lon": 142.694883299999986547845765016973018646240234375
},
"last_point": {
"ts": "2026-10-07T16:12:53+00:00",
"lat": 46.373168300000003227978595532476902008056640625,
"lon": 142.69869330000000218205968849360942840576171875
}
}- Duration: 6h 18m
- Radius: 229 meters
- Data Points: 45 AIS positions
- Centroid: 46.3741, 142.6972
- Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
"radius_m": 229.099999999999994315658113919198513031005859375,
"duration_minutes": 378,
"points": 45,
"centroid": {
"lat": 46.374116884444447350688278675079345703125,
"lon": 142.6971671866666611094842664897441864013671875
},
"bbox": {
"min_lat": 46.37279500000000354020812665112316608428955078125,
"min_lon": 142.694873300000011795418686233460903167724609375,
"max_lat": 46.3747766999999981862856657244265079498291015625,
"max_lon": 142.6987116999999898325768299400806427001953125
},
"zone_id": "russia_prigorodnoye"
}- Duration: 6h 18m
- Radius: 229 meters
- Data Points: 45 AIS positions
- Centroid: 46.3741, 142.6972
- Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
"radius_m": 229.099999999999994315658113919198513031005859375,
"duration_minutes": 378,
"points": 45,
"centroid": {
"lat": 46.374116884444447350688278675079345703125,
"lon": 142.6971671866666611094842664897441864013671875
},
"bbox": {
"min_lat": 46.37279500000000354020812665112316608428955078125,
"min_lon": 142.694873300000011795418686233460903167724609375,
"max_lat": 46.3747766999999981862856657244265079498291015625,
"max_lon": 142.6987116999999898325768299400806427001953125
},
"zone_id": "russia_sakhalin_south"
}- Minimum Distance: 8 meters
- Average Distance: 23 meters
- Duration: 3h 7m
- Period: 2026-10-07T08:34:57+00:00 to 2026-10-07T11:42:49+00:00
- Vessel A Avg Speed: 0.2 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Prigorodnoye/Sakhalin LNG
Confidence Analysis
High-confidence STS candidate. Two tankers (ORIS and GLORISEA) maintained close proximity (min 8m, avg 23m) for 188 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye/Sakhalin LNG, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 8m, avg 23m |
| Duration | 25/25 | Duration 188 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: Prigorodnoye/Sakhalin LNG |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"vessel_b": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"min_distance_m": 8.4000000000000003552713678800500929355621337890625,
"avg_distance_m": 22.699999999999999289457264239899814128875732421875,
"distance_consistency_m": 11.5,
"duration_minutes": 187.900000000000005684341886080801486968994140625,
"overlap_duration_s": 11272,
"speed_a_avg": 0.179999999999999993338661852249060757458209991455078125,
"speed_a_std": 0.2300000000000000099920072216264088638126850128173828125,
"speed_b_avg": 0.1000000000000000055511151231257827021181583404541015625,
"speed_b_std": 0.13000000000000000444089209850062616169452667236328125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.179999999999999993338661852249060757458209991455078125,
"max_sog": 1.399999999999999911182158029987476766109466552734375
},
"vessel_b": {
"avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
"max_sog": 0.40000000000000002220446049250313080847263336181640625
}
},
"time_window": {
"start": "2026-10-07T08:34:57+00:00",
"end": "2026-10-07T11:42:49+00:00"
},
"points_count": {
"vessel_a": 35,
"vessel_b": 35
},
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 8m, avg 23m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 188 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: Prigorodnoye\/Sakhalin LNG"
}
},
"summary": "High-confidence STS candidate. Two tankers (ORIS and GLORISEA) maintained close proximity (min 8m, avg 23m) for 188 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
}
}- Minimum Distance: 8 meters
- Average Distance: 23 meters
- Duration: 3h 7m
- Period: 2026-10-07T08:34:57+00:00 to 2026-10-07T11:42:49+00:00
- Vessel A Avg Speed: 0.2 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Sakhalin South Approach
Confidence Analysis
High-confidence STS candidate. Two tankers (ORIS and GLORISEA) maintained close proximity (min 8m, avg 23m) for 188 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 8m, avg 23m |
| Duration | 25/25 | Duration 188 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: Sakhalin South Approach |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 671388100,
"imo": 9004310,
"name": "ORIS",
"flag": "TOGO"
},
"vessel_b": {
"mmsi": 477664300,
"imo": 9917402,
"name": "GLORISEA",
"flag": "HONG KONG"
},
"min_distance_m": 8.4000000000000003552713678800500929355621337890625,
"avg_distance_m": 22.699999999999999289457264239899814128875732421875,
"distance_consistency_m": 11.5,
"duration_minutes": 187.900000000000005684341886080801486968994140625,
"overlap_duration_s": 11272,
"speed_a_avg": 0.179999999999999993338661852249060757458209991455078125,
"speed_a_std": 0.2300000000000000099920072216264088638126850128173828125,
"speed_b_avg": 0.1000000000000000055511151231257827021181583404541015625,
"speed_b_std": 0.13000000000000000444089209850062616169452667236328125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.179999999999999993338661852249060757458209991455078125,
"max_sog": 1.399999999999999911182158029987476766109466552734375
},
"vessel_b": {
"avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
"max_sog": 0.40000000000000002220446049250313080847263336181640625
}
},
"time_window": {
"start": "2026-10-07T08:34:57+00:00",
"end": "2026-10-07T11:42:49+00:00"
},
"points_count": {
"vessel_a": 35,
"vessel_b": 35
},
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"score": {
"value": 95,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 8m, avg 23m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 188 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: Sakhalin South Approach"
}
},
"summary": "High-confidence STS candidate. Two tankers (ORIS and GLORISEA) maintained close proximity (min 8m, avg 23m) for 188 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
}
}- Zone: Sakhalin South Approach
- Duration: 6h 27m
- Data Points: 50 AIS positions
- Period: 2026-10-07T08:45:51+00:00 to 2026-10-07T15:12:50+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"dwell_minutes": 387,
"points_in_zone": 50,
"first_point": {
"ts": "2026-10-07T08:45:51+00:00",
"lat": 46.3721232999999983803718350827693939208984375,
"lon": 142.69531829999999672509147785604000091552734375
},
"last_point": {
"ts": "2026-10-07T15:12:50+00:00",
"lat": 46.37364000000000174850356415845453739166259765625,
"lon": 142.698688299999986384136718697845935821533203125
}
}- Zone: Prigorodnoye/Sakhalin LNG
- Duration: 6h 27m
- Data Points: 50 AIS positions
- Period: 2026-10-07T08:45:51+00:00 to 2026-10-07T15:12:50+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"dwell_minutes": 387,
"points_in_zone": 50,
"first_point": {
"ts": "2026-10-07T08:45:51+00:00",
"lat": 46.3721232999999983803718350827693939208984375,
"lon": 142.69531829999999672509147785604000091552734375
},
"last_point": {
"ts": "2026-10-07T15:12:50+00:00",
"lat": 46.37364000000000174850356415845453739166259765625,
"lon": 142.698688299999986384136718697845935821533203125
}
}- Duration: 6h 27m
- Radius: 264 meters
- Data Points: 50 AIS positions
- Centroid: 46.3739, 142.6967
- Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
"radius_m": 263.5,
"duration_minutes": 387,
"points": 50,
"centroid": {
"lat": 46.3738794640000122626588563434779644012451171875,
"lon": 142.696711401999976942533976398408412933349609375
},
"bbox": {
"min_lat": 46.371863300000001117950887419283390045166015625,
"min_lon": 142.69467670000000225627445615828037261962890625,
"max_lat": 46.3747766999999981862856657244265079498291015625,
"max_lon": 142.698688299999986384136718697845935821533203125
},
"zone_id": "russia_prigorodnoye"
}- Duration: 6h 27m
- Radius: 264 meters
- Data Points: 50 AIS positions
- Centroid: 46.3739, 142.6967
- Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
"radius_m": 263.5,
"duration_minutes": 387,
"points": 50,
"centroid": {
"lat": 46.3738794640000122626588563434779644012451171875,
"lon": 142.696711401999976942533976398408412933349609375
},
"bbox": {
"min_lat": 46.371863300000001117950887419283390045166015625,
"min_lon": 142.69467670000000225627445615828037261962890625,
"max_lat": 46.3747766999999981862856657244265079498291015625,
"max_lon": 142.698688299999986384136718697845935821533203125
},
"zone_id": "russia_sakhalin_south"
}- Zone: Sakhalin South Approach
- Duration: 6h 29m
- Data Points: 47 AIS positions
- Period: 2026-10-07T07:42:54+00:00 to 2026-10-07T14:12:51+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"dwell_minutes": 389.8999999999999772626324556767940521240234375,
"points_in_zone": 47,
"first_point": {
"ts": "2026-10-07T07:42:54+00:00",
"lat": 46.3718199999999995952748577110469341278076171875,
"lon": 142.6959650000000010550138540565967559814453125
},
"last_point": {
"ts": "2026-10-07T14:12:51+00:00",
"lat": 46.3746383000000008678398444317281246185302734375,
"lon": 142.698131700000004684625309891998767852783203125
}
}- Zone: Prigorodnoye/Sakhalin LNG
- Duration: 6h 29m
- Data Points: 47 AIS positions
- Period: 2026-10-07T07:42:54+00:00 to 2026-10-07T14:12:51+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"dwell_minutes": 389.8999999999999772626324556767940521240234375,
"points_in_zone": 47,
"first_point": {
"ts": "2026-10-07T07:42:54+00:00",
"lat": 46.3718199999999995952748577110469341278076171875,
"lon": 142.6959650000000010550138540565967559814453125
},
"last_point": {
"ts": "2026-10-07T14:12:51+00:00",
"lat": 46.3746383000000008678398444317281246185302734375,
"lon": 142.698131700000004684625309891998767852783203125
}
}- Duration: 6h 29m
- Radius: 235 meters
- Data Points: 47 AIS positions
- Centroid: 46.3737, 142.6964
- Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
"radius_m": 234.900000000000005684341886080801486968994140625,
"duration_minutes": 389.8999999999999772626324556767940521240234375,
"points": 47,
"centroid": {
"lat": 46.3736910255319116913597099483013153076171875,
"lon": 142.696445359574454414541833102703094482421875
},
"bbox": {
"min_lat": 46.3718199999999995952748577110469341278076171875,
"min_lon": 142.69467670000000225627445615828037261962890625,
"max_lat": 46.3747766999999981862856657244265079498291015625,
"max_lon": 142.69817499999999199644662439823150634765625
},
"zone_id": "russia_prigorodnoye"
}- Duration: 6h 29m
- Radius: 235 meters
- Data Points: 47 AIS positions
- Centroid: 46.3737, 142.6964
- Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
"radius_m": 234.900000000000005684341886080801486968994140625,
"duration_minutes": 389.8999999999999772626324556767940521240234375,
"points": 47,
"centroid": {
"lat": 46.3736910255319116913597099483013153076171875,
"lon": 142.696445359574454414541833102703094482421875
},
"bbox": {
"min_lat": 46.3718199999999995952748577110469341278076171875,
"min_lon": 142.69467670000000225627445615828037261962890625,
"max_lat": 46.3747766999999981862856657244265079498291015625,
"max_lon": 142.69817499999999199644662439823150634765625
},
"zone_id": "russia_sakhalin_south"
}- Zone: Prigorodnoye/Sakhalin LNG
- Duration: 6h 27m
- Data Points: 53 AIS positions
- Period: 2026-10-07T06:33:49+00:00 to 2026-10-07T13:00:47+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"dwell_minutes": 387,
"points_in_zone": 53,
"first_point": {
"ts": "2026-10-07T06:33:49+00:00",
"lat": 46.371769999999997935447026975452899932861328125,
"lon": 142.695863300000013396129361353814601898193359375
},
"last_point": {
"ts": "2026-10-07T13:00:47+00:00",
"lat": 46.3747766999999981862856657244265079498291015625,
"lon": 142.6978467000000136977178044617176055908203125
}
}- Zone: Sakhalin South Approach
- Duration: 6h 27m
- Data Points: 53 AIS positions
- Period: 2026-10-07T06:33:49+00:00 to 2026-10-07T13:00:47+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"dwell_minutes": 387,
"points_in_zone": 53,
"first_point": {
"ts": "2026-10-07T06:33:49+00:00",
"lat": 46.371769999999997935447026975452899932861328125,
"lon": 142.695863300000013396129361353814601898193359375
},
"last_point": {
"ts": "2026-10-07T13:00:47+00:00",
"lat": 46.3747766999999981862856657244265079498291015625,
"lon": 142.6978467000000136977178044617176055908203125
}
}- Duration: 6h 27m
- Radius: 244 meters
- Data Points: 53 AIS positions
- Centroid: 46.3730, 142.6960
- Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
"radius_m": 243.80000000000001136868377216160297393798828125,
"duration_minutes": 387,
"points": 53,
"centroid": {
"lat": 46.3729865716981066725566051900386810302734375,
"lon": 142.696015666037737901206128299236297607421875
},
"bbox": {
"min_lat": 46.3717182999999977255356498062610626220703125,
"min_lon": 142.69467670000000225627445615828037261962890625,
"max_lat": 46.3747766999999981862856657244265079498291015625,
"max_lon": 142.698021699999998190833139233291149139404296875
},
"zone_id": "russia_prigorodnoye"
}- Duration: 6h 27m
- Radius: 244 meters
- Data Points: 53 AIS positions
- Centroid: 46.3730, 142.6960
- Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
"radius_m": 243.80000000000001136868377216160297393798828125,
"duration_minutes": 387,
"points": 53,
"centroid": {
"lat": 46.3729865716981066725566051900386810302734375,
"lon": 142.696015666037737901206128299236297607421875
},
"bbox": {
"min_lat": 46.3717182999999977255356498062610626220703125,
"min_lon": 142.69467670000000225627445615828037261962890625,
"max_lat": 46.3747766999999981862856657244265079498291015625,
"max_lon": 142.698021699999998190833139233291149139404296875
},
"zone_id": "russia_sakhalin_south"
}- Zone: Prigorodnoye/Sakhalin LNG
- Duration: 6h 33m
- Data Points: 51 AIS positions
- Period: 2026-10-07T05:51:49+00:00 to 2026-10-07T12:24:53+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"dwell_minutes": 393.1000000000000227373675443232059478759765625,
"points_in_zone": 51,
"first_point": {
"ts": "2026-10-07T05:51:49+00:00",
"lat": 46.37173829999999696838131058029830455780029296875,
"lon": 142.69580999999999448846210725605487823486328125
},
"last_point": {
"ts": "2026-10-07T12:24:53+00:00",
"lat": 46.3744999999999976125764078460633754730224609375,
"lon": 142.69779829999998810308170504868030548095703125
}
}- Zone: Sakhalin South Approach
- Duration: 6h 33m
- Data Points: 51 AIS positions
- Period: 2026-10-07T05:51:49+00:00 to 2026-10-07T12:24:53+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"dwell_minutes": 393.1000000000000227373675443232059478759765625,
"points_in_zone": 51,
"first_point": {
"ts": "2026-10-07T05:51:49+00:00",
"lat": 46.37173829999999696838131058029830455780029296875,
"lon": 142.69580999999999448846210725605487823486328125
},
"last_point": {
"ts": "2026-10-07T12:24:53+00:00",
"lat": 46.3744999999999976125764078460633754730224609375,
"lon": 142.69779829999998810308170504868030548095703125
}
}- Duration: 6h 33m
- Radius: 251 meters
- Data Points: 51 AIS positions
- Centroid: 46.3727, 142.6958
- Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
"radius_m": 251.30000000000001136868377216160297393798828125,
"duration_minutes": 393.1000000000000227373675443232059478759765625,
"points": 51,
"centroid": {
"lat": 46.3727490843137246656624483875930309295654296875,
"lon": 142.69581892549018675708794035017490386962890625
},
"bbox": {
"min_lat": 46.3717182999999977255356498062610626220703125,
"min_lon": 142.69467670000000225627445615828037261962890625,
"max_lat": 46.3746416999999979680069372989237308502197265625,
"max_lon": 142.69791670000000749496393837034702301025390625
},
"zone_id": "russia_prigorodnoye"
}- Duration: 6h 33m
- Radius: 251 meters
- Data Points: 51 AIS positions
- Centroid: 46.3727, 142.6958
- Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
"radius_m": 251.30000000000001136868377216160297393798828125,
"duration_minutes": 393.1000000000000227373675443232059478759765625,
"points": 51,
"centroid": {
"lat": 46.3727490843137246656624483875930309295654296875,
"lon": 142.69581892549018675708794035017490386962890625
},
"bbox": {
"min_lat": 46.3717182999999977255356498062610626220703125,
"min_lon": 142.69467670000000225627445615828037261962890625,
"max_lat": 46.3746416999999979680069372989237308502197265625,
"max_lon": 142.69791670000000749496393837034702301025390625
},
"zone_id": "russia_sakhalin_south"
}- Zone: Prigorodnoye/Sakhalin LNG
- Duration: 6h 36m
- Data Points: 49 AIS positions
- Period: 2026-10-07T04:51:46+00:00 to 2026-10-07T11:27:48+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_prigorodnoye",
"zone_name": "Prigorodnoye\/Sakhalin LNG",
"dwell_minutes": 396,
"points_in_zone": 49,
"first_point": {
"ts": "2026-10-07T04:51:46+00:00",
"lat": 46.37171330000000324389475281350314617156982421875,
"lon": 142.696143299999988585113896988332271575927734375
},
"last_point": {
"ts": "2026-10-07T11:27:48+00:00",
"lat": 46.3738282999999995581674738787114620208740234375,
"lon": 142.69535500000000638465280644595623016357421875
}
}- Zone: Sakhalin South Approach
- Duration: 6h 36m
- Data Points: 49 AIS positions
- Period: 2026-10-07T04:51:46+00:00 to 2026-10-07T11:27:48+00:00
Show Raw Evidence JSON
{
"zone_id": "russia_sakhalin_south",
"zone_name": "Sakhalin South Approach",
"dwell_minutes": 396,
"points_in_zone": 49,
"first_point": {
"ts": "2026-10-07T04:51:46+00:00",
"lat": 46.37171330000000324389475281350314617156982421875,
"lon": 142.696143299999988585113896988332271575927734375
},
"last_point": {
"ts": "2026-10-07T11:27:48+00:00",
"lat": 46.3738282999999995581674738787114620208740234375,
"lon": 142.69535500000000638465280644595623016357421875
}
}Recent Position Data
| Time (UTC) | Lat | Lon | Speed | Course | Zone |
|---|---|---|---|---|---|
| Oct 8 00:05 | 46.2626 | 142.7311 | 11.4 kn | 176.6° | Prigorodnoye/Sakhalin LNG |
| Oct 7 23:57 | 46.2867 | 142.7273 | 11.1 kn | 166.9° | Prigorodnoye/Sakhalin LNG |
| Oct 7 23:56 | 46.2897 | 142.7262 | 11.1 kn | 167.3° | Prigorodnoye/Sakhalin LNG |
| Oct 7 23:55 | 46.2927 | 142.7252 | 11.1 kn | 166.4° | Prigorodnoye/Sakhalin LNG |
| Oct 7 23:53 | 46.2987 | 142.7232 | 11.2 kn | 166.4° | Prigorodnoye/Sakhalin LNG |
| Oct 7 23:51 | 46.3060 | 142.7208 | 11.4 kn | 166.8° | Prigorodnoye/Sakhalin LNG |
| Oct 7 23:50 | 46.3091 | 142.7197 | 11.5 kn | 167.1° | Prigorodnoye/Sakhalin LNG |
| Oct 7 23:47 | 46.3185 | 142.7167 | 11.7 kn | 167.7° | Prigorodnoye/Sakhalin LNG |
| Oct 7 23:46 | 46.3227 | 142.7154 | 11.5 kn | 167.6° | Prigorodnoye/Sakhalin LNG |
| Oct 7 23:45 | 46.3259 | 142.7144 | 11.5 kn | 167.8° | Prigorodnoye/Sakhalin LNG |
| Oct 7 23:43 | 46.3321 | 142.7124 | 11.3 kn | 167.8° | Prigorodnoye/Sakhalin LNG |
| Oct 7 23:41 | 46.3367 | 142.7109 | 11.1 kn | 167.1° | Prigorodnoye/Sakhalin LNG |
| Oct 7 23:40 | 46.3392 | 142.7101 | 11.2 kn | 167.1° | Prigorodnoye/Sakhalin LNG |
| Oct 7 23:38 | 46.3467 | 142.7076 | 11.0 kn | 167.6° | Prigorodnoye/Sakhalin LNG |
| Oct 7 23:37 | 46.3497 | 142.7067 | 10.8 kn | 166.8° | Prigorodnoye/Sakhalin LNG |
| Oct 7 23:35 | 46.3550 | 142.7049 | 10.4 kn | 167.2° | Prigorodnoye/Sakhalin LNG |
| Oct 7 23:30 | 46.3680 | 142.7006 | 7.5 kn | 167.3° | Prigorodnoye/Sakhalin LNG |
| Oct 7 23:26 | 46.3740 | 142.6984 | 1.0 kn | 128.1° | Prigorodnoye/Sakhalin LNG |
| Oct 7 23:22 | 46.3744 | 142.6966 | 1.1 kn | 103.6° | Prigorodnoye/Sakhalin LNG |
| Oct 7 23:18 | 46.3746 | 142.6953 | 0.8 kn | 94.3° | Prigorodnoye/Sakhalin LNG |
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.
