BUKHTA NAGAEVA

IMO 9183817

Vessel information

Vessel Name BUKHTA NAGAEVA
IMO Number 9183817
MMSI 273219140
Vessel Type Tanker - Hazard C (Minor)
Flag 🇷🇺 RUSSIA
Call Sign UBVT6
Length 162 m
Beam 27 m

Detected Events (100)

Sts🛰️✗ Prigorodnoye/Sakhalin LNG
Oct 23, 2026 08:06 UTC 72/100 ▼
Vessel A: SOLARIS (SOLARIS) OMAN
Vessel B: IMO 9183817 (BUKHTA NAGAEVA) RUSSIA
  • Minimum Distance: 68 meters
  • Average Distance: 155 meters
  • Duration: 40 minutes
  • Period: 2026-10-23T08:06:06+00:00 to 2026-10-23T08:46:08+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Prigorodnoye/Sakhalin LNG

Confidence Analysis

Score: 72/100

Moderate-confidence STS candidate. Two tankers (SOLARIS and BUKHTA NAGAEVA) maintained close proximity (min 68m, avg 155m) for 40 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
FactorScoreDetail
Distance Tightness25/25Min distance 68m, avg 155m
Duration5/25Duration 40 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency12/15Distance variance ±49m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Prigorodnoye/Sakhalin LNG

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-10-23T09:45:01.336324+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 461000248,
        "imo": 9333436,
        "name": "SOLARIS",
        "flag": "OMAN"
    },
    "vessel_b": {
        "mmsi": 273219140,
        "imo": 9183817,
        "name": "BUKHTA NAGAEVA",
        "flag": "RUSSIA"
    },
    "min_distance_m": 68.400000000000005684341886080801486968994140625,
    "avg_distance_m": 154.900000000000005684341886080801486968994140625,
    "distance_consistency_m": 49.39999999999999857891452847979962825775146484375,
    "duration_minutes": 40,
    "overlap_duration_s": 2402,
    "speed_a_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-10-23T08:06:06+00:00",
        "end": "2026-10-23T08:46:08+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 72,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 68m, avg 155m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 40 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b149m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SOLARIS and BUKHTA NAGAEVA) maintained close proximity (min 68m, avg 155m) for 40 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."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.6499450000000024374458007514476776123046875,
            "lon": 142.54302999999998746716300956904888153076171875
        },
        "time_window": {
            "start_ts": "2026-10-23T08:06:06+00:00",
            "end_ts": "2026-10-23T08:46:08+00:00"
        },
        "searched_at": "2026-10-23T09:45:01.336324+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Sakhalin South Approach
Oct 23, 2026 08:06 UTC 72/100 ▼
Vessel A: SOLARIS (SOLARIS) OMAN
Vessel B: IMO 9183817 (BUKHTA NAGAEVA) RUSSIA
  • Minimum Distance: 68 meters
  • Average Distance: 155 meters
  • Duration: 40 minutes
  • Period: 2026-10-23T08:06:06+00:00 to 2026-10-23T08:46:08+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Sakhalin South Approach

Confidence Analysis

Score: 72/100

Moderate-confidence STS candidate. Two tankers (SOLARIS and BUKHTA NAGAEVA) maintained close proximity (min 68m, avg 155m) for 40 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
FactorScoreDetail
Distance Tightness25/25Min distance 68m, avg 155m
Duration5/25Duration 40 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency12/15Distance variance ±49m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Sakhalin South Approach

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-10-23T09:45:03.770125+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 461000248,
        "imo": 9333436,
        "name": "SOLARIS",
        "flag": "OMAN"
    },
    "vessel_b": {
        "mmsi": 273219140,
        "imo": 9183817,
        "name": "BUKHTA NAGAEVA",
        "flag": "RUSSIA"
    },
    "min_distance_m": 68.400000000000005684341886080801486968994140625,
    "avg_distance_m": 154.900000000000005684341886080801486968994140625,
    "distance_consistency_m": 49.39999999999999857891452847979962825775146484375,
    "duration_minutes": 40,
    "overlap_duration_s": 2402,
    "speed_a_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-10-23T08:06:06+00:00",
        "end": "2026-10-23T08:46:08+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 72,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 68m, avg 155m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 40 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b149m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SOLARIS and BUKHTA NAGAEVA) maintained close proximity (min 68m, avg 155m) for 40 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."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.6499450000000024374458007514476776123046875,
            "lon": 142.54302999999998746716300956904888153076171875
        },
        "time_window": {
            "start_ts": "2026-10-23T08:06:06+00:00",
            "end_ts": "2026-10-23T08:46:08+00:00"
        },
        "searched_at": "2026-10-23T09:45:03.770125+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Prigorodnoye/Sakhalin LNG
Oct 23, 2026 07:40 UTC 82/100 ▼
Vessel A: IMO 9183817 (BUKHTA NAGAEVA) RUSSIA
Vessel B: SOLARIS (SOLARIS) OMAN
  • Minimum Distance: 68 meters
  • Average Distance: 155 meters
  • Duration: 1h 4m
  • Period: 2026-10-23T07:40:37+00:00 to 2026-10-23T08:44:54+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Prigorodnoye/Sakhalin LNG

Confidence Analysis

Score: 82/100

High-confidence STS candidate. Two tankers (BUKHTA NAGAEVA and SOLARIS) maintained close proximity (min 68m, avg 155m) for 64 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
FactorScoreDetail
Distance Tightness25/25Min distance 68m, avg 155m
Duration15/25Duration 64 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency12/15Distance variance ±39m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Prigorodnoye/Sakhalin LNG

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-10-23T13:30:01.431178+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273219140,
        "imo": 9183817,
        "name": "BUKHTA NAGAEVA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 461000248,
        "imo": 9333436,
        "name": "SOLARIS",
        "flag": "OMAN"
    },
    "min_distance_m": 68.400000000000005684341886080801486968994140625,
    "avg_distance_m": 154.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 39.2999999999999971578290569595992565155029296875,
    "duration_minutes": 64.2999999999999971578290569595992565155029296875,
    "overlap_duration_s": 3857,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_b_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-10-23T07:40:37+00:00",
        "end": "2026-10-23T08:44:54+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 82,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 68m, avg 155m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 64 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b139m"
            },
            "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 (BUKHTA NAGAEVA and SOLARIS) maintained close proximity (min 68m, avg 155m) for 64 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": 46.6499189999999970268618199042975902557373046875,
            "lon": 142.542867900000004510729922913014888763427734375
        },
        "time_window": {
            "start_ts": "2026-10-23T07:40:37+00:00",
            "end_ts": "2026-10-23T08:44:54+00:00"
        },
        "searched_at": "2026-10-23T13:30:01.431178+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Sakhalin South Approach
Oct 23, 2026 07:40 UTC 82/100 ▼
Vessel A: IMO 9183817 (BUKHTA NAGAEVA) RUSSIA
Vessel B: SOLARIS (SOLARIS) OMAN
  • Minimum Distance: 68 meters
  • Average Distance: 155 meters
  • Duration: 1h 4m
  • Period: 2026-10-23T07:40:37+00:00 to 2026-10-23T08:44:54+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Sakhalin South Approach

Confidence Analysis

Score: 82/100

High-confidence STS candidate. Two tankers (BUKHTA NAGAEVA and SOLARIS) maintained close proximity (min 68m, avg 155m) for 64 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
FactorScoreDetail
Distance Tightness25/25Min distance 68m, avg 155m
Duration15/25Duration 64 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency12/15Distance variance ±39m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Sakhalin South Approach

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-10-23T13:30:04.136586+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273219140,
        "imo": 9183817,
        "name": "BUKHTA NAGAEVA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 461000248,
        "imo": 9333436,
        "name": "SOLARIS",
        "flag": "OMAN"
    },
    "min_distance_m": 68.400000000000005684341886080801486968994140625,
    "avg_distance_m": 154.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 39.2999999999999971578290569595992565155029296875,
    "duration_minutes": 64.2999999999999971578290569595992565155029296875,
    "overlap_duration_s": 3857,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_b_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-10-23T07:40:37+00:00",
        "end": "2026-10-23T08:44:54+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 82,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 68m, avg 155m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 64 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b139m"
            },
            "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 (BUKHTA NAGAEVA and SOLARIS) maintained close proximity (min 68m, avg 155m) for 64 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": 46.6499189999999970268618199042975902557373046875,
            "lon": 142.542867900000004510729922913014888763427734375
        },
        "time_window": {
            "start_ts": "2026-10-23T07:40:37+00:00",
            "end_ts": "2026-10-23T08:44:54+00:00"
        },
        "searched_at": "2026-10-23T13:30:04.136586+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 23, 2026 07:40 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 1h 11m
  • Data Points: 8 AIS positions
  • Period: 2026-10-23T07:40:37+00:00 to 2026-10-23T08:52:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 71.400000000000005684341886080801486968994140625,
    "points_in_zone": 8,
    "first_point": {
        "ts": "2026-10-23T07:40:37+00:00",
        "lat": 46.649266699999998309067450463771820068359375,
        "lon": 142.54298330000000305517460219562053680419921875
    },
    "last_point": {
        "ts": "2026-10-23T08:52:02+00:00",
        "lat": 46.649716699999999036663211882114410400390625,
        "lon": 142.542633300000005647234502248466014862060546875
    }
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 23, 2026 07:40 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 1h 11m
  • Data Points: 8 AIS positions
  • Period: 2026-10-23T07:40:37+00:00 to 2026-10-23T08:52:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 71.400000000000005684341886080801486968994140625,
    "points_in_zone": 8,
    "first_point": {
        "ts": "2026-10-23T07:40:37+00:00",
        "lat": 46.649266699999998309067450463771820068359375,
        "lon": 142.54298330000000305517460219562053680419921875
    },
    "last_point": {
        "ts": "2026-10-23T08:52:02+00:00",
        "lat": 46.649716699999999036663211882114410400390625,
        "lon": 142.542633300000005647234502248466014862060546875
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Prigorodnoye/Sakhalin LNG
Oct 23, 2026 06:34 UTC 88/100 ▼
Vessel A: IMO 9183817 (BUKHTA NAGAEVA) RUSSIA
Vessel B: SOLARIS (SOLARIS) OMAN
  • Minimum Distance: 43 meters
  • Average Distance: 141 meters
  • Duration: 2h 10m
  • Period: 2026-10-23T06:34:34+00:00 to 2026-10-23T08:44:54+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Prigorodnoye/Sakhalin LNG

Confidence Analysis

Score: 88/100

High-confidence STS candidate. Two tankers (BUKHTA NAGAEVA and SOLARIS) maintained close proximity (min 43m, avg 141m) for 130 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Prigorodnoye/Sakhalin LNG, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 43m, avg 141m
Duration25/25Duration 130 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±50m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Prigorodnoye/Sakhalin LNG

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-10-23T12:45:08.328258+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273219140,
        "imo": 9183817,
        "name": "BUKHTA NAGAEVA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 461000248,
        "imo": 9333436,
        "name": "SOLARIS",
        "flag": "OMAN"
    },
    "min_distance_m": 42.89999999999999857891452847979962825775146484375,
    "avg_distance_m": 140.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 50.2000000000000028421709430404007434844970703125,
    "duration_minutes": 130.30000000000001136868377216160297393798828125,
    "overlap_duration_s": 7820,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-10-23T06:34:34+00:00",
        "end": "2026-10-23T08:44:54+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 88,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 43m, avg 141m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 130 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b150m"
            },
            "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 (BUKHTA NAGAEVA and SOLARIS) maintained close proximity (min 43m, avg 141m) for 130 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.6496518000000008896677172742784023284912109375,
            "lon": 142.542968500000000631189323030412197113037109375
        },
        "time_window": {
            "start_ts": "2026-10-23T06:34:34+00:00",
            "end_ts": "2026-10-23T08:44:54+00:00"
        },
        "searched_at": "2026-10-23T12:45:08.328258+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Sakhalin South Approach
Oct 23, 2026 06:34 UTC 88/100 ▼
Vessel A: IMO 9183817 (BUKHTA NAGAEVA) RUSSIA
Vessel B: SOLARIS (SOLARIS) OMAN
  • Minimum Distance: 43 meters
  • Average Distance: 141 meters
  • Duration: 2h 10m
  • Period: 2026-10-23T06:34:34+00:00 to 2026-10-23T08:44:54+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Sakhalin South Approach

Confidence Analysis

Score: 88/100

High-confidence STS candidate. Two tankers (BUKHTA NAGAEVA and SOLARIS) maintained close proximity (min 43m, avg 141m) for 130 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Sakhalin South Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 43m, avg 141m
Duration25/25Duration 130 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±50m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Sakhalin South Approach

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-10-23T12:45:10.712340+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273219140,
        "imo": 9183817,
        "name": "BUKHTA NAGAEVA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 461000248,
        "imo": 9333436,
        "name": "SOLARIS",
        "flag": "OMAN"
    },
    "min_distance_m": 42.89999999999999857891452847979962825775146484375,
    "avg_distance_m": 140.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 50.2000000000000028421709430404007434844970703125,
    "duration_minutes": 130.30000000000001136868377216160297393798828125,
    "overlap_duration_s": 7820,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-10-23T06:34:34+00:00",
        "end": "2026-10-23T08:44:54+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 88,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 43m, avg 141m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 130 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b150m"
            },
            "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 (BUKHTA NAGAEVA and SOLARIS) maintained close proximity (min 43m, avg 141m) for 130 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Sakhalin South Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.6496518000000008896677172742784023284912109375,
            "lon": 142.542968500000000631189323030412197113037109375
        },
        "time_window": {
            "start_ts": "2026-10-23T06:34:34+00:00",
            "end_ts": "2026-10-23T08:44:54+00:00"
        },
        "searched_at": "2026-10-23T12:45:10.712340+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 23, 2026 06:34 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 2h 17m
  • Data Points: 10 AIS positions
  • Period: 2026-10-23T06:34:34+00:00 to 2026-10-23T08:52:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 137.5,
    "points_in_zone": 10,
    "first_point": {
        "ts": "2026-10-23T06:34:34+00:00",
        "lat": 46.6488666999999992412995197810232639312744140625,
        "lon": 142.543100000000009686118573881685733795166015625
    },
    "last_point": {
        "ts": "2026-10-23T08:52:02+00:00",
        "lat": 46.649716699999999036663211882114410400390625,
        "lon": 142.542633300000005647234502248466014862060546875
    }
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 23, 2026 06:34 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 2h 17m
  • Data Points: 10 AIS positions
  • Period: 2026-10-23T06:34:34+00:00 to 2026-10-23T08:52:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 137.5,
    "points_in_zone": 10,
    "first_point": {
        "ts": "2026-10-23T06:34:34+00:00",
        "lat": 46.6488666999999992412995197810232639312744140625,
        "lon": 142.543100000000009686118573881685733795166015625
    },
    "last_point": {
        "ts": "2026-10-23T08:52:02+00:00",
        "lat": 46.649716699999999036663211882114410400390625,
        "lon": 142.542633300000005647234502248466014862060546875
    }
}
Methodology: 2026.01.18
Loiter Prigorodnoye/Sakhalin LNG
Oct 23, 2026 06:34 UTC 75.0% ▼
  • Duration: 2h 17m
  • Radius: 55 meters
  • Data Points: 10 AIS positions
  • Centroid: 46.6493, 142.5429
  • Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
    "radius_m": 55,
    "duration_minutes": 137.5,
    "points": 10,
    "centroid": {
        "lat": 46.6493416800000062494291341863572597503662109375,
        "lon": 142.54289833000001408436219207942485809326171875
    },
    "bbox": {
        "min_lat": 46.6488666999999992412995197810232639312744140625,
        "min_lon": 142.542633300000005647234502248466014862060546875,
        "max_lat": 46.649716699999999036663211882114410400390625,
        "max_lon": 142.543100000000009686118573881685733795166015625
    },
    "zone_id": "russia_prigorodnoye"
}
Methodology: 2026.01.18
Loiter Sakhalin South Approach
Oct 23, 2026 06:34 UTC 75.0% ▼
  • Duration: 2h 17m
  • Radius: 55 meters
  • Data Points: 10 AIS positions
  • Centroid: 46.6493, 142.5429
  • Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
    "radius_m": 55,
    "duration_minutes": 137.5,
    "points": 10,
    "centroid": {
        "lat": 46.6493416800000062494291341863572597503662109375,
        "lon": 142.54289833000001408436219207942485809326171875
    },
    "bbox": {
        "min_lat": 46.6488666999999992412995197810232639312744140625,
        "min_lon": 142.542633300000005647234502248466014862060546875,
        "max_lat": 46.649716699999999036663211882114410400390625,
        "max_lon": 142.543100000000009686118573881685733795166015625
    },
    "zone_id": "russia_sakhalin_south"
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 23, 2026 05:55 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 2h 56m
  • Data Points: 11 AIS positions
  • Period: 2026-10-23T05:55:19+00:00 to 2026-10-23T08:52:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 176.69999999999998863131622783839702606201171875,
    "points_in_zone": 11,
    "first_point": {
        "ts": "2026-10-23T05:55:19+00:00",
        "lat": 46.6488666999999992412995197810232639312744140625,
        "lon": 142.543116700000012997406884096562862396240234375
    },
    "last_point": {
        "ts": "2026-10-23T08:52:02+00:00",
        "lat": 46.649716699999999036663211882114410400390625,
        "lon": 142.542633300000005647234502248466014862060546875
    }
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 23, 2026 05:55 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 2h 56m
  • Data Points: 11 AIS positions
  • Period: 2026-10-23T05:55:19+00:00 to 2026-10-23T08:52:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 176.69999999999998863131622783839702606201171875,
    "points_in_zone": 11,
    "first_point": {
        "ts": "2026-10-23T05:55:19+00:00",
        "lat": 46.6488666999999992412995197810232639312744140625,
        "lon": 142.543116700000012997406884096562862396240234375
    },
    "last_point": {
        "ts": "2026-10-23T08:52:02+00:00",
        "lat": 46.649716699999999036663211882114410400390625,
        "lon": 142.542633300000005647234502248466014862060546875
    }
}
Methodology: 2026.01.18
Loiter Prigorodnoye/Sakhalin LNG
Oct 23, 2026 05:55 UTC 75.0% ▼
  • Duration: 2h 56m
  • Radius: 51 meters
  • Data Points: 11 AIS positions
  • Centroid: 46.6493, 142.5429
  • Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
    "radius_m": 51.2999999999999971578290569595992565155029296875,
    "duration_minutes": 176.69999999999998863131622783839702606201171875,
    "points": 11,
    "centroid": {
        "lat": 46.64929850000000755017026676796376705169677734375,
        "lon": 142.542918181818180300979292951524257659912109375
    },
    "bbox": {
        "min_lat": 46.6488666999999992412995197810232639312744140625,
        "min_lon": 142.542633300000005647234502248466014862060546875,
        "max_lat": 46.649716699999999036663211882114410400390625,
        "max_lon": 142.543116700000012997406884096562862396240234375
    },
    "zone_id": "russia_prigorodnoye"
}
Methodology: 2026.01.18
Loiter Sakhalin South Approach
Oct 23, 2026 05:55 UTC 75.0% ▼
  • Duration: 2h 56m
  • Radius: 51 meters
  • Data Points: 11 AIS positions
  • Centroid: 46.6493, 142.5429
  • Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
    "radius_m": 51.2999999999999971578290569595992565155029296875,
    "duration_minutes": 176.69999999999998863131622783839702606201171875,
    "points": 11,
    "centroid": {
        "lat": 46.64929850000000755017026676796376705169677734375,
        "lon": 142.542918181818180300979292951524257659912109375
    },
    "bbox": {
        "min_lat": 46.6488666999999992412995197810232639312744140625,
        "min_lon": 142.542633300000005647234502248466014862060546875,
        "max_lat": 46.649716699999999036663211882114410400390625,
        "max_lon": 142.543116700000012997406884096562862396240234375
    },
    "zone_id": "russia_sakhalin_south"
}
Methodology: 2026.01.18
Sts🛰️✗ Prigorodnoye/Sakhalin LNG
Oct 23, 2026 04:25 UTC 92/100 ▼
Vessel A: IMO 9183817 (BUKHTA NAGAEVA) RUSSIA
Vessel B: SOLARIS (SOLARIS) OMAN
  • Minimum Distance: 43 meters
  • Average Distance: 147 meters
  • Duration: 4h 18m
  • Period: 2026-10-23T04:25:59+00:00 to 2026-10-23T08:44:54+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Prigorodnoye/Sakhalin LNG

Confidence Analysis

Score: 92/100

High-confidence STS candidate. Two tankers (BUKHTA NAGAEVA and SOLARIS) maintained close proximity (min 43m, avg 147m) for 259 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
FactorScoreDetail
Distance Tightness25/25Min distance 43m, avg 147m
Duration25/25Duration 259 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency12/15Distance variance ±50m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Prigorodnoye/Sakhalin LNG

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-10-23T10:45:07.932799+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273219140,
        "imo": 9183817,
        "name": "BUKHTA NAGAEVA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 461000248,
        "imo": 9333436,
        "name": "SOLARIS",
        "flag": "OMAN"
    },
    "min_distance_m": 42.89999999999999857891452847979962825775146484375,
    "avg_distance_m": 147.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 49.89999999999999857891452847979962825775146484375,
    "duration_minutes": 258.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 15535,
    "speed_a_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_a_std": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_avg": 0.13000000000000000444089209850062616169452667236328125,
    "speed_b_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.13000000000000000444089209850062616169452667236328125,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-10-23T04:25:59+00:00",
        "end": "2026-10-23T08:44:54+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 92,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 43m, avg 147m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 259 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b150m"
            },
            "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 (BUKHTA NAGAEVA and SOLARIS) maintained close proximity (min 43m, avg 147m) for 259 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."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.64946809999999999263309291563928127288818359375,
            "lon": 142.542810400000007575727067887783050537109375
        },
        "time_window": {
            "start_ts": "2026-10-23T04:25:59+00:00",
            "end_ts": "2026-10-23T08:44:54+00:00"
        },
        "searched_at": "2026-10-23T10:45:07.932799+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Sakhalin South Approach
Oct 23, 2026 04:25 UTC 92/100 ▼
Vessel A: IMO 9183817 (BUKHTA NAGAEVA) RUSSIA
Vessel B: SOLARIS (SOLARIS) OMAN
  • Minimum Distance: 43 meters
  • Average Distance: 147 meters
  • Duration: 4h 18m
  • Period: 2026-10-23T04:25:59+00:00 to 2026-10-23T08:44:54+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Sakhalin South Approach

Confidence Analysis

Score: 92/100

High-confidence STS candidate. Two tankers (BUKHTA NAGAEVA and SOLARIS) maintained close proximity (min 43m, avg 147m) for 259 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
FactorScoreDetail
Distance Tightness25/25Min distance 43m, avg 147m
Duration25/25Duration 259 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency12/15Distance variance ±50m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Sakhalin South Approach

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-10-23T10:45:10.431778+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273219140,
        "imo": 9183817,
        "name": "BUKHTA NAGAEVA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 461000248,
        "imo": 9333436,
        "name": "SOLARIS",
        "flag": "OMAN"
    },
    "min_distance_m": 42.89999999999999857891452847979962825775146484375,
    "avg_distance_m": 147.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 49.89999999999999857891452847979962825775146484375,
    "duration_minutes": 258.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 15535,
    "speed_a_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_a_std": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_avg": 0.13000000000000000444089209850062616169452667236328125,
    "speed_b_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.13000000000000000444089209850062616169452667236328125,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-10-23T04:25:59+00:00",
        "end": "2026-10-23T08:44:54+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 92,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 43m, avg 147m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 259 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b150m"
            },
            "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 (BUKHTA NAGAEVA and SOLARIS) maintained close proximity (min 43m, avg 147m) for 259 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."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.64946809999999999263309291563928127288818359375,
            "lon": 142.542810400000007575727067887783050537109375
        },
        "time_window": {
            "start_ts": "2026-10-23T04:25:59+00:00",
            "end_ts": "2026-10-23T08:44:54+00:00"
        },
        "searched_at": "2026-10-23T10:45:10.431778+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 23, 2026 04:25 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 4h 26m
  • Data Points: 13 AIS positions
  • Period: 2026-10-23T04:25:59+00:00 to 2026-10-23T08:52:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 266.1000000000000227373675443232059478759765625,
    "points_in_zone": 13,
    "first_point": {
        "ts": "2026-10-23T04:25:59+00:00",
        "lat": 46.6484166999999985137037583626806735992431640625,
        "lon": 142.543116700000012997406884096562862396240234375
    },
    "last_point": {
        "ts": "2026-10-23T08:52:02+00:00",
        "lat": 46.649716699999999036663211882114410400390625,
        "lon": 142.542633300000005647234502248466014862060546875
    }
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 23, 2026 04:25 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 4h 26m
  • Data Points: 13 AIS positions
  • Period: 2026-10-23T04:25:59+00:00 to 2026-10-23T08:52:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 266.1000000000000227373675443232059478759765625,
    "points_in_zone": 13,
    "first_point": {
        "ts": "2026-10-23T04:25:59+00:00",
        "lat": 46.6484166999999985137037583626806735992431640625,
        "lon": 142.543116700000012997406884096562862396240234375
    },
    "last_point": {
        "ts": "2026-10-23T08:52:02+00:00",
        "lat": 46.649716699999999036663211882114410400390625,
        "lon": 142.542633300000005647234502248466014862060546875
    }
}
Methodology: 2026.01.18
Loiter Prigorodnoye/Sakhalin LNG
Oct 23, 2026 04:25 UTC 75.0% ▼
  • Duration: 4h 26m
  • Radius: 87 meters
  • Data Points: 13 AIS positions
  • Centroid: 46.6492, 142.5429
  • Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
    "radius_m": 86.900000000000005684341886080801486968994140625,
    "duration_minutes": 266.1000000000000227373675443232059478759765625,
    "points": 13,
    "centroid": {
        "lat": 46.64918976153845875387560226954519748687744140625,
        "lon": 142.5429461538461737291072495281696319580078125
    },
    "bbox": {
        "min_lat": 46.6484166999999985137037583626806735992431640625,
        "min_lon": 142.542633300000005647234502248466014862060546875,
        "max_lat": 46.649716699999999036663211882114410400390625,
        "max_lon": 142.543116700000012997406884096562862396240234375
    },
    "zone_id": "russia_prigorodnoye"
}
Methodology: 2026.01.18
Loiter Sakhalin South Approach
Oct 23, 2026 04:25 UTC 75.0% ▼
  • Duration: 4h 26m
  • Radius: 87 meters
  • Data Points: 13 AIS positions
  • Centroid: 46.6492, 142.5429
  • Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
    "radius_m": 86.900000000000005684341886080801486968994140625,
    "duration_minutes": 266.1000000000000227373675443232059478759765625,
    "points": 13,
    "centroid": {
        "lat": 46.64918976153845875387560226954519748687744140625,
        "lon": 142.5429461538461737291072495281696319580078125
    },
    "bbox": {
        "min_lat": 46.6484166999999985137037583626806735992431640625,
        "min_lon": 142.542633300000005647234502248466014862060546875,
        "max_lat": 46.649716699999999036663211882114410400390625,
        "max_lon": 142.543116700000012997406884096562862396240234375
    },
    "zone_id": "russia_sakhalin_south"
}
Methodology: 2026.01.18
Sts🛰️✗ Prigorodnoye/Sakhalin LNG
Oct 23, 2026 03:04 UTC 88/100 ▼
Vessel A: IMO 9183817 (BUKHTA NAGAEVA) RUSSIA
Vessel B: SOLARIS (SOLARIS) OMAN
  • Minimum Distance: 43 meters
  • Average Distance: 159 meters
  • Duration: 5h 40m
  • Period: 2026-10-23T03:04:49+00:00 to 2026-10-23T08:44:54+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Prigorodnoye/Sakhalin LNG

Confidence Analysis

Score: 88/100

High-confidence STS candidate. Two tankers (BUKHTA NAGAEVA and SOLARIS) maintained close proximity (min 43m, avg 159m) for 340 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Prigorodnoye/Sakhalin LNG, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 43m, avg 159m
Duration25/25Duration 340 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±72m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Prigorodnoye/Sakhalin LNG

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-10-23T09:45:09.775084+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273219140,
        "imo": 9183817,
        "name": "BUKHTA NAGAEVA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 461000248,
        "imo": 9333436,
        "name": "SOLARIS",
        "flag": "OMAN"
    },
    "min_distance_m": 42.89999999999999857891452847979962825775146484375,
    "avg_distance_m": 159.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 71.7999999999999971578290569595992565155029296875,
    "duration_minutes": 340.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 20405,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_b_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.1499999999999999944488848768742172978818416595458984375,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-10-23T03:04:49+00:00",
        "end": "2026-10-23T08:44:54+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 88,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 43m, avg 159m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 340 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b172m"
            },
            "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 (BUKHTA NAGAEVA and SOLARIS) maintained close proximity (min 43m, avg 159m) for 340 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.649187200000000075306161306798458099365234375,
            "lon": 142.542925599999989572097547352313995361328125
        },
        "time_window": {
            "start_ts": "2026-10-23T03:04:49+00:00",
            "end_ts": "2026-10-23T08:44:54+00:00"
        },
        "searched_at": "2026-10-23T09:45:09.775084+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Sakhalin South Approach
Oct 23, 2026 03:04 UTC 88/100 ▼
Vessel A: IMO 9183817 (BUKHTA NAGAEVA) RUSSIA
Vessel B: SOLARIS (SOLARIS) OMAN
  • Minimum Distance: 43 meters
  • Average Distance: 159 meters
  • Duration: 5h 40m
  • Period: 2026-10-23T03:04:49+00:00 to 2026-10-23T08:44:54+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Sakhalin South Approach

Confidence Analysis

Score: 88/100

High-confidence STS candidate. Two tankers (BUKHTA NAGAEVA and SOLARIS) maintained close proximity (min 43m, avg 159m) for 340 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Sakhalin South Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 43m, avg 159m
Duration25/25Duration 340 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±72m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Sakhalin South Approach

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-10-23T09:45:12.668636+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273219140,
        "imo": 9183817,
        "name": "BUKHTA NAGAEVA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 461000248,
        "imo": 9333436,
        "name": "SOLARIS",
        "flag": "OMAN"
    },
    "min_distance_m": 42.89999999999999857891452847979962825775146484375,
    "avg_distance_m": 159.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 71.7999999999999971578290569595992565155029296875,
    "duration_minutes": 340.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 20405,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_b_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.1499999999999999944488848768742172978818416595458984375,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-10-23T03:04:49+00:00",
        "end": "2026-10-23T08:44:54+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 88,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 43m, avg 159m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 340 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b172m"
            },
            "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 (BUKHTA NAGAEVA and SOLARIS) maintained close proximity (min 43m, avg 159m) for 340 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Sakhalin South Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.649187200000000075306161306798458099365234375,
            "lon": 142.542925599999989572097547352313995361328125
        },
        "time_window": {
            "start_ts": "2026-10-23T03:04:49+00:00",
            "end_ts": "2026-10-23T08:44:54+00:00"
        },
        "searched_at": "2026-10-23T09:45:12.668636+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 23, 2026 03:00 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 5h 51m
  • Data Points: 17 AIS positions
  • Period: 2026-10-23T03:00:20+00:00 to 2026-10-23T08:52:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 351.69999999999998863131622783839702606201171875,
    "points_in_zone": 17,
    "first_point": {
        "ts": "2026-10-23T03:00:20+00:00",
        "lat": 46.648366699999996853875927627086639404296875,
        "lon": 142.542966699999993807068676687777042388916015625
    },
    "last_point": {
        "ts": "2026-10-23T08:52:02+00:00",
        "lat": 46.649716699999999036663211882114410400390625,
        "lon": 142.542633300000005647234502248466014862060546875
    }
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 23, 2026 03:00 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 5h 51m
  • Data Points: 17 AIS positions
  • Period: 2026-10-23T03:00:20+00:00 to 2026-10-23T08:52:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 351.69999999999998863131622783839702606201171875,
    "points_in_zone": 17,
    "first_point": {
        "ts": "2026-10-23T03:00:20+00:00",
        "lat": 46.648366699999996853875927627086639404296875,
        "lon": 142.542966699999993807068676687777042388916015625
    },
    "last_point": {
        "ts": "2026-10-23T08:52:02+00:00",
        "lat": 46.649716699999999036663211882114410400390625,
        "lon": 142.542633300000005647234502248466014862060546875
    }
}
Methodology: 2026.01.18
Loiter Prigorodnoye/Sakhalin LNG
Oct 23, 2026 03:00 UTC 75.0% ▼
  • Duration: 5h 51m
  • Radius: 86 meters
  • Data Points: 17 AIS positions
  • Centroid: 46.6490, 142.5430
  • Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
    "radius_m": 86,
    "duration_minutes": 351.69999999999998863131622783839702606201171875,
    "points": 17,
    "centroid": {
        "lat": 46.6490019764705863281051279045641422271728515625,
        "lon": 142.542968629411774372783838771283626556396484375
    },
    "bbox": {
        "min_lat": 46.6482333000000011224983609281480312347412109375,
        "min_lon": 142.542633300000005647234502248466014862060546875,
        "max_lat": 46.649716699999999036663211882114410400390625,
        "max_lon": 142.543116700000012997406884096562862396240234375
    },
    "zone_id": "russia_prigorodnoye"
}
Methodology: 2026.01.18
Loiter Sakhalin South Approach
Oct 23, 2026 03:00 UTC 75.0% ▼
  • Duration: 5h 51m
  • Radius: 86 meters
  • Data Points: 17 AIS positions
  • Centroid: 46.6490, 142.5430
  • Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
    "radius_m": 86,
    "duration_minutes": 351.69999999999998863131622783839702606201171875,
    "points": 17,
    "centroid": {
        "lat": 46.6490019764705863281051279045641422271728515625,
        "lon": 142.542968629411774372783838771283626556396484375
    },
    "bbox": {
        "min_lat": 46.6482333000000011224983609281480312347412109375,
        "min_lon": 142.542633300000005647234502248466014862060546875,
        "max_lat": 46.649716699999999036663211882114410400390625,
        "max_lon": 142.543116700000012997406884096562862396240234375
    },
    "zone_id": "russia_sakhalin_south"
}
Methodology: 2026.01.18
Sts Prigorodnoye/Sakhalin LNG
Oct 23, 2026 02:05 UTC 88/100 ▼
Vessel A: IMO 9183817 (BUKHTA NAGAEVA) RUSSIA
Vessel B: SOLARIS (SOLARIS) OMAN
  • Minimum Distance: 43 meters
  • Average Distance: 167 meters
  • Duration: 6h 25m
  • Period: 2026-10-23T02:18:59+00:00 to 2026-10-23T08:44:54+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Prigorodnoye/Sakhalin LNG

Confidence Analysis

Score: 88/100

High-confidence STS candidate. Two tankers (BUKHTA NAGAEVA and SOLARIS) maintained close proximity (min 43m, avg 167m) for 386 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). Moderate distance variation observed during the encounter. Event occurred in Prigorodnoye/Sakhalin LNG, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 43m, avg 167m
Duration25/25Duration 386 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±82m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273219140,
        "imo": 9183817,
        "name": "BUKHTA NAGAEVA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 461000248,
        "imo": 9333436,
        "name": "SOLARIS",
        "flag": "OMAN"
    },
    "min_distance_m": 42.89999999999999857891452847979962825775146484375,
    "avg_distance_m": 167.099999999999994315658113919198513031005859375,
    "distance_consistency_m": 82.2999999999999971578290569595992565155029296875,
    "duration_minutes": 385.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 23155,
    "speed_a_avg": 0.11999999999999999555910790149937383830547332763671875,
    "speed_a_std": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_b_avg": 0.179999999999999993338661852249060757458209991455078125,
    "speed_b_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.11999999999999999555910790149937383830547332763671875,
            "max_sog": 0.59999999999999997779553950749686919152736663818359375
        },
        "vessel_b": {
            "avg_sog": 0.179999999999999993338661852249060757458209991455078125,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-10-23T02:18:59+00:00",
        "end": "2026-10-23T08:44:54+00:00"
    },
    "points_count": {
        "vessel_a": 25,
        "vessel_b": 25
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 88,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 43m, avg 167m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 386 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b182m"
            },
            "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 (BUKHTA NAGAEVA and SOLARIS) maintained close proximity (min 43m, avg 167m) for 386 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). Moderate distance variation observed during the encounter. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Sakhalin South Approach
Oct 23, 2026 02:05 UTC 88/100 ▼
Vessel A: IMO 9183817 (BUKHTA NAGAEVA) RUSSIA
Vessel B: SOLARIS (SOLARIS) OMAN
  • Minimum Distance: 43 meters
  • Average Distance: 167 meters
  • Duration: 6h 25m
  • Period: 2026-10-23T02:18:59+00:00 to 2026-10-23T08:44:54+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Sakhalin South Approach

Confidence Analysis

Score: 88/100

High-confidence STS candidate. Two tankers (BUKHTA NAGAEVA and SOLARIS) maintained close proximity (min 43m, avg 167m) for 386 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). Moderate distance variation observed during the encounter. Event occurred in Sakhalin South Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 43m, avg 167m
Duration25/25Duration 386 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±82m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Sakhalin South Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273219140,
        "imo": 9183817,
        "name": "BUKHTA NAGAEVA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 461000248,
        "imo": 9333436,
        "name": "SOLARIS",
        "flag": "OMAN"
    },
    "min_distance_m": 42.89999999999999857891452847979962825775146484375,
    "avg_distance_m": 167.099999999999994315658113919198513031005859375,
    "distance_consistency_m": 82.2999999999999971578290569595992565155029296875,
    "duration_minutes": 385.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 23155,
    "speed_a_avg": 0.11999999999999999555910790149937383830547332763671875,
    "speed_a_std": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_b_avg": 0.179999999999999993338661852249060757458209991455078125,
    "speed_b_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.11999999999999999555910790149937383830547332763671875,
            "max_sog": 0.59999999999999997779553950749686919152736663818359375
        },
        "vessel_b": {
            "avg_sog": 0.179999999999999993338661852249060757458209991455078125,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-10-23T02:18:59+00:00",
        "end": "2026-10-23T08:44:54+00:00"
    },
    "points_count": {
        "vessel_a": 25,
        "vessel_b": 25
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 88,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 43m, avg 167m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 386 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b182m"
            },
            "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 (BUKHTA NAGAEVA and SOLARIS) maintained close proximity (min 43m, avg 167m) for 386 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). Moderate distance variation observed during the encounter. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 23, 2026 02:01 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 6h 31m
  • Data Points: 25 AIS positions
  • Period: 2026-10-23T02:21:00+00:00 to 2026-10-23T08:52:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 391,
    "points_in_zone": 25,
    "first_point": {
        "ts": "2026-10-23T02:21:00+00:00",
        "lat": 46.64821669999999897981979302130639553070068359375,
        "lon": 142.54508329999998750281520187854766845703125
    },
    "last_point": {
        "ts": "2026-10-23T08:52:02+00:00",
        "lat": 46.649716699999999036663211882114410400390625,
        "lon": 142.542633300000005647234502248466014862060546875
    }
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 23, 2026 02:01 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 6h 31m
  • Data Points: 25 AIS positions
  • Period: 2026-10-23T02:21:00+00:00 to 2026-10-23T08:52:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 391,
    "points_in_zone": 25,
    "first_point": {
        "ts": "2026-10-23T02:21:00+00:00",
        "lat": 46.64821669999999897981979302130639553070068359375,
        "lon": 142.54508329999998750281520187854766845703125
    },
    "last_point": {
        "ts": "2026-10-23T08:52:02+00:00",
        "lat": 46.649716699999999036663211882114410400390625,
        "lon": 142.542633300000005647234502248466014862060546875
    }
}
Methodology: 2026.01.18
Loiter Prigorodnoye/Sakhalin LNG
Oct 23, 2026 02:01 UTC 75.0% ▼
  • Duration: 6h 31m
  • Radius: 164 meters
  • Data Points: 25 AIS positions
  • Centroid: 46.6488, 142.5431
  • Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
    "radius_m": 164.400000000000005684341886080801486968994140625,
    "duration_minutes": 391,
    "points": 25,
    "centroid": {
        "lat": 46.64878934800000109817119664512574672698974609375,
        "lon": 142.543103999999999587089405395090579986572265625
    },
    "bbox": {
        "min_lat": 46.64816669999999731999196228571236133575439453125,
        "min_lon": 142.542633300000005647234502248466014862060546875,
        "max_lat": 46.649716699999999036663211882114410400390625,
        "max_lon": 142.54508329999998750281520187854766845703125
    },
    "zone_id": "russia_prigorodnoye"
}
Methodology: 2026.01.18
Loiter Sakhalin South Approach
Oct 23, 2026 02:01 UTC 75.0% ▼
  • Duration: 6h 31m
  • Radius: 164 meters
  • Data Points: 25 AIS positions
  • Centroid: 46.6488, 142.5431
  • Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
    "radius_m": 164.400000000000005684341886080801486968994140625,
    "duration_minutes": 391,
    "points": 25,
    "centroid": {
        "lat": 46.64878934800000109817119664512574672698974609375,
        "lon": 142.543103999999999587089405395090579986572265625
    },
    "bbox": {
        "min_lat": 46.64816669999999731999196228571236133575439453125,
        "min_lon": 142.542633300000005647234502248466014862060546875,
        "max_lat": 46.649716699999999036663211882114410400390625,
        "max_lon": 142.54508329999998750281520187854766845703125
    },
    "zone_id": "russia_sakhalin_south"
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 23, 2026 01:00 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 6h 37m
  • Data Points: 28 AIS positions
  • Period: 2026-10-23T01:51:23+00:00 to 2026-10-23T08:28:35+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 397.19999999999998863131622783839702606201171875,
    "points_in_zone": 28,
    "first_point": {
        "ts": "2026-10-23T01:51:23+00:00",
        "lat": 46.64826670000000063964762375690042972564697265625,
        "lon": 142.553750000000007958078640513122081756591796875
    },
    "last_point": {
        "ts": "2026-10-23T08:28:35+00:00",
        "lat": 46.6494500000000016370904631912708282470703125,
        "lon": 142.54284999999998717612470500171184539794921875
    }
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 23, 2026 01:00 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 6h 37m
  • Data Points: 28 AIS positions
  • Period: 2026-10-23T01:51:23+00:00 to 2026-10-23T08:28:35+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 397.19999999999998863131622783839702606201171875,
    "points_in_zone": 28,
    "first_point": {
        "ts": "2026-10-23T01:51:23+00:00",
        "lat": 46.64826670000000063964762375690042972564697265625,
        "lon": 142.553750000000007958078640513122081756591796875
    },
    "last_point": {
        "ts": "2026-10-23T08:28:35+00:00",
        "lat": 46.6494500000000016370904631912708282470703125,
        "lon": 142.54284999999998717612470500171184539794921875
    }
}
Methodology: 2026.01.18
Loiter Prigorodnoye/Sakhalin LNG
Oct 23, 2026 01:00 UTC 75.0% ▼
  • Duration: 6h 37m
  • Radius: 679 meters
  • Data Points: 28 AIS positions
  • Centroid: 46.6486, 142.5449
  • Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
    "radius_m": 679.3999999999999772626324556767940521240234375,
    "duration_minutes": 397.19999999999998863131622783839702606201171875,
    "points": 28,
    "centroid": {
        "lat": 46.6485571535714456103960401378571987152099609375,
        "lon": 142.5448851214285923560964874923229217529296875
    },
    "bbox": {
        "min_lat": 46.64811670000000276559148915112018585205078125,
        "min_lon": 142.542833300000012286545825190842151641845703125,
        "max_lat": 46.6494500000000016370904631912708282470703125,
        "max_lon": 142.553750000000007958078640513122081756591796875
    },
    "zone_id": "russia_prigorodnoye"
}
Methodology: 2026.01.18
Loiter Sakhalin South Approach
Oct 23, 2026 01:00 UTC 75.0% ▼
  • Duration: 6h 37m
  • Radius: 679 meters
  • Data Points: 28 AIS positions
  • Centroid: 46.6486, 142.5449
  • Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
    "radius_m": 679.3999999999999772626324556767940521240234375,
    "duration_minutes": 397.19999999999998863131622783839702606201171875,
    "points": 28,
    "centroid": {
        "lat": 46.6485571535714456103960401378571987152099609375,
        "lon": 142.5448851214285923560964874923229217529296875
    },
    "bbox": {
        "min_lat": 46.64811670000000276559148915112018585205078125,
        "min_lon": 142.542833300000012286545825190842151641845703125,
        "max_lat": 46.6494500000000016370904631912708282470703125,
        "max_lon": 142.553750000000007958078640513122081756591796875
    },
    "zone_id": "russia_sakhalin_south"
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 23, 2026 00:27 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 6h 16m
  • Data Points: 35 AIS positions
  • Period: 2026-10-23T00:27:08+00:00 to 2026-10-23T06:43:58+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 376.80000000000001136868377216160297393798828125,
    "points_in_zone": 35,
    "first_point": {
        "ts": "2026-10-23T00:27:08+00:00",
        "lat": 46.65446670000000040090526454150676727294921875,
        "lon": 142.557316700000001219450496137142181396484375
    },
    "last_point": {
        "ts": "2026-10-23T06:43:58+00:00",
        "lat": 46.64916670000000209483914659358561038970947265625,
        "lon": 142.54301670000000967775122262537479400634765625
    }
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 23, 2026 00:27 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 6h 16m
  • Data Points: 35 AIS positions
  • Period: 2026-10-23T00:27:08+00:00 to 2026-10-23T06:43:58+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 376.80000000000001136868377216160297393798828125,
    "points_in_zone": 35,
    "first_point": {
        "ts": "2026-10-23T00:27:08+00:00",
        "lat": 46.65446670000000040090526454150676727294921875,
        "lon": 142.557316700000001219450496137142181396484375
    },
    "last_point": {
        "ts": "2026-10-23T06:43:58+00:00",
        "lat": 46.64916670000000209483914659358561038970947265625,
        "lon": 142.54301670000000967775122262537479400634765625
    }
}
Methodology: 2026.01.18
Loiter Prigorodnoye/Sakhalin LNG
Oct 23, 2026 00:27 UTC 75.0% ▼
  • Duration: 6h 16m
  • Radius: 850 meters
  • Data Points: 35 AIS positions
  • Centroid: 46.6498, 142.5486
  • Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
    "radius_m": 850,
    "duration_minutes": 376.80000000000001136868377216160297393798828125,
    "points": 35,
    "centroid": {
        "lat": 46.649834774285722005515708588063716888427734375,
        "lon": 142.54857572571427226648665964603424072265625
    },
    "bbox": {
        "min_lat": 46.64811670000000276559148915112018585205078125,
        "min_lon": 142.5428666999999904874130152165889739990234375,
        "max_lat": 46.6550833000000011452357284724712371826171875,
        "max_lon": 142.557316700000001219450496137142181396484375
    },
    "zone_id": "russia_prigorodnoye"
}
Methodology: 2026.01.18
Loiter Sakhalin South Approach
Oct 23, 2026 00:27 UTC 75.0% ▼
  • Duration: 6h 16m
  • Radius: 850 meters
  • Data Points: 35 AIS positions
  • Centroid: 46.6498, 142.5486
  • Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
    "radius_m": 850,
    "duration_minutes": 376.80000000000001136868377216160297393798828125,
    "points": 35,
    "centroid": {
        "lat": 46.649834774285722005515708588063716888427734375,
        "lon": 142.54857572571427226648665964603424072265625
    },
    "bbox": {
        "min_lat": 46.64811670000000276559148915112018585205078125,
        "min_lon": 142.5428666999999904874130152165889739990234375,
        "max_lat": 46.6550833000000011452357284724712371826171875,
        "max_lon": 142.557316700000001219450496137142181396484375
    },
    "zone_id": "russia_sakhalin_south"
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 22, 2026 23:00 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 6h 32m
  • Data Points: 34 AIS positions
  • Period: 2026-10-22T23:22:55+00:00 to 2026-10-23T05:55:19+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 392.3999999999999772626324556767940521240234375,
    "points_in_zone": 34,
    "first_point": {
        "ts": "2026-10-22T23:22:55+00:00",
        "lat": 46.6550833000000011452357284724712371826171875,
        "lon": 142.5569166999999879408278502523899078369140625
    },
    "last_point": {
        "ts": "2026-10-23T05:55:19+00:00",
        "lat": 46.6488666999999992412995197810232639312744140625,
        "lon": 142.543116700000012997406884096562862396240234375
    }
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 22, 2026 23:00 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 6h 32m
  • Data Points: 34 AIS positions
  • Period: 2026-10-22T23:22:55+00:00 to 2026-10-23T05:55:19+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 392.3999999999999772626324556767940521240234375,
    "points_in_zone": 34,
    "first_point": {
        "ts": "2026-10-22T23:22:55+00:00",
        "lat": 46.6550833000000011452357284724712371826171875,
        "lon": 142.5569166999999879408278502523899078369140625
    },
    "last_point": {
        "ts": "2026-10-23T05:55:19+00:00",
        "lat": 46.6488666999999992412995197810232639312744140625,
        "lon": 142.543116700000012997406884096562862396240234375
    }
}
Methodology: 2026.01.18
Loiter Prigorodnoye/Sakhalin LNG
Oct 22, 2026 23:00 UTC 75.0% ▼
  • Duration: 6h 32m
  • Radius: 818 meters
  • Data Points: 34 AIS positions
  • Centroid: 46.6500, 142.5491
  • Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
    "radius_m": 817.6000000000000227373675443232059478759765625,
    "duration_minutes": 392.3999999999999772626324556767940521240234375,
    "points": 34,
    "centroid": {
        "lat": 46.6500372647058867414671112783253192901611328125,
        "lon": 142.549145599999974365346133708953857421875
    },
    "bbox": {
        "min_lat": 46.64811670000000276559148915112018585205078125,
        "min_lon": 142.5428666999999904874130152165889739990234375,
        "max_lat": 46.6550833000000011452357284724712371826171875,
        "max_lon": 142.557316700000001219450496137142181396484375
    },
    "zone_id": "russia_prigorodnoye"
}
Methodology: 2026.01.18
Loiter Sakhalin South Approach
Oct 22, 2026 23:00 UTC 75.0% ▼
  • Duration: 6h 32m
  • Radius: 818 meters
  • Data Points: 34 AIS positions
  • Centroid: 46.6500, 142.5491
  • Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
    "radius_m": 817.6000000000000227373675443232059478759765625,
    "duration_minutes": 392.3999999999999772626324556767940521240234375,
    "points": 34,
    "centroid": {
        "lat": 46.6500372647058867414671112783253192901611328125,
        "lon": 142.549145599999974365346133708953857421875
    },
    "bbox": {
        "min_lat": 46.64811670000000276559148915112018585205078125,
        "min_lon": 142.5428666999999904874130152165889739990234375,
        "max_lat": 46.6550833000000011452357284724712371826171875,
        "max_lon": 142.557316700000001219450496137142181396484375
    },
    "zone_id": "russia_sakhalin_south"
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 22, 2026 22:02 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 6h 39m
  • Data Points: 39 AIS positions
  • Period: 2026-10-22T22:20:29+00:00 to 2026-10-23T04:59:44+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 399.19999999999998863131622783839702606201171875,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-10-22T22:20:29+00:00",
        "lat": 46.65509999999999735109668108634650707244873046875,
        "lon": 142.556883300000009739960660226643085479736328125
    },
    "last_point": {
        "ts": "2026-10-23T04:59:44+00:00",
        "lat": 46.64876670000000302707121591083705425262451171875,
        "lon": 142.543083300000006374830263666808605194091796875
    }
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 22, 2026 22:02 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 6h 39m
  • Data Points: 39 AIS positions
  • Period: 2026-10-22T22:20:29+00:00 to 2026-10-23T04:59:44+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 399.19999999999998863131622783839702606201171875,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-10-22T22:20:29+00:00",
        "lat": 46.65509999999999735109668108634650707244873046875,
        "lon": 142.556883300000009739960660226643085479736328125
    },
    "last_point": {
        "ts": "2026-10-23T04:59:44+00:00",
        "lat": 46.64876670000000302707121591083705425262451171875,
        "lon": 142.543083300000006374830263666808605194091796875
    }
}
Methodology: 2026.01.18
Loiter Prigorodnoye/Sakhalin LNG
Oct 22, 2026 22:02 UTC 75.0% ▼
  • Duration: 6h 39m
  • Radius: 685 meters
  • Data Points: 39 AIS positions
  • Centroid: 46.6508, 142.5505
  • Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
    "radius_m": 685,
    "duration_minutes": 399.19999999999998863131622783839702606201171875,
    "points": 39,
    "centroid": {
        "lat": 46.650849153846138506196439266204833984375,
        "lon": 142.550482489743586711483658291399478912353515625
    },
    "bbox": {
        "min_lat": 46.64811670000000276559148915112018585205078125,
        "min_lon": 142.5428666999999904874130152165889739990234375,
        "max_lat": 46.65523329999999901929186307825148105621337890625,
        "max_lon": 142.557316700000001219450496137142181396484375
    },
    "zone_id": "russia_prigorodnoye"
}
Methodology: 2026.01.18
Loiter Sakhalin South Approach
Oct 22, 2026 22:02 UTC 75.0% ▼
  • Duration: 6h 39m
  • Radius: 685 meters
  • Data Points: 39 AIS positions
  • Centroid: 46.6508, 142.5505
  • Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
    "radius_m": 685,
    "duration_minutes": 399.19999999999998863131622783839702606201171875,
    "points": 39,
    "centroid": {
        "lat": 46.650849153846138506196439266204833984375,
        "lon": 142.550482489743586711483658291399478912353515625
    },
    "bbox": {
        "min_lat": 46.64811670000000276559148915112018585205078125,
        "min_lon": 142.5428666999999904874130152165889739990234375,
        "max_lat": 46.65523329999999901929186307825148105621337890625,
        "max_lon": 142.557316700000001219450496137142181396484375
    },
    "zone_id": "russia_sakhalin_south"
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 22, 2026 21:07 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 6h 30m
  • Data Points: 41 AIS positions
  • Period: 2026-10-22T21:55:45+00:00 to 2026-10-23T04:25:59+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 390.19999999999998863131622783839702606201171875,
    "points_in_zone": 41,
    "first_point": {
        "ts": "2026-10-22T21:55:45+00:00",
        "lat": 46.6549667000000027883288566954433917999267578125,
        "lon": 142.5570500000000038198777474462985992431640625
    },
    "last_point": {
        "ts": "2026-10-23T04:25:59+00:00",
        "lat": 46.6484166999999985137037583626806735992431640625,
        "lon": 142.543116700000012997406884096562862396240234375
    }
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 22, 2026 21:07 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 6h 30m
  • Data Points: 41 AIS positions
  • Period: 2026-10-22T21:55:45+00:00 to 2026-10-23T04:25:59+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 390.19999999999998863131622783839702606201171875,
    "points_in_zone": 41,
    "first_point": {
        "ts": "2026-10-22T21:55:45+00:00",
        "lat": 46.6549667000000027883288566954433917999267578125,
        "lon": 142.5570500000000038198777474462985992431640625
    },
    "last_point": {
        "ts": "2026-10-23T04:25:59+00:00",
        "lat": 46.6484166999999985137037583626806735992431640625,
        "lon": 142.543116700000012997406884096562862396240234375
    }
}
Methodology: 2026.01.18
Loiter Prigorodnoye/Sakhalin LNG
Oct 22, 2026 21:07 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 707 meters
  • Data Points: 41 AIS positions
  • Centroid: 46.6512, 142.5511
  • Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
    "radius_m": 706.5,
    "duration_minutes": 390.19999999999998863131622783839702606201171875,
    "points": 41,
    "centroid": {
        "lat": 46.65120366585363598233016091398894786834716796875,
        "lon": 142.55113497073170947260223329067230224609375
    },
    "bbox": {
        "min_lat": 46.64811670000000276559148915112018585205078125,
        "min_lon": 142.5428666999999904874130152165889739990234375,
        "max_lat": 46.65523329999999901929186307825148105621337890625,
        "max_lon": 142.557316700000001219450496137142181396484375
    },
    "zone_id": "russia_prigorodnoye"
}
Methodology: 2026.01.18
Loiter Sakhalin South Approach
Oct 22, 2026 21:07 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 707 meters
  • Data Points: 41 AIS positions
  • Centroid: 46.6512, 142.5511
  • Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
    "radius_m": 706.5,
    "duration_minutes": 390.19999999999998863131622783839702606201171875,
    "points": 41,
    "centroid": {
        "lat": 46.65120366585363598233016091398894786834716796875,
        "lon": 142.55113497073170947260223329067230224609375
    },
    "bbox": {
        "min_lat": 46.64811670000000276559148915112018585205078125,
        "min_lon": 142.5428666999999904874130152165889739990234375,
        "max_lat": 46.65523329999999901929186307825148105621337890625,
        "max_lon": 142.557316700000001219450496137142181396484375
    },
    "zone_id": "russia_sakhalin_south"
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 22, 2026 20:35 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 6h 31m
  • Data Points: 44 AIS positions
  • Period: 2026-10-22T20:35:28+00:00 to 2026-10-23T03:07:11+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 391.69999999999998863131622783839702606201171875,
    "points_in_zone": 44,
    "first_point": {
        "ts": "2026-10-22T20:35:28+00:00",
        "lat": 46.65480000000000160298441187478601932525634765625,
        "lon": 142.557216699999997899794834665954113006591796875
    },
    "last_point": {
        "ts": "2026-10-23T03:07:11+00:00",
        "lat": 46.6485167000000018333594198338687419891357421875,
        "lon": 142.543049999999993815436027944087982177734375
    }
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 22, 2026 20:35 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 6h 31m
  • Data Points: 44 AIS positions
  • Period: 2026-10-22T20:35:28+00:00 to 2026-10-23T03:07:11+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 391.69999999999998863131622783839702606201171875,
    "points_in_zone": 44,
    "first_point": {
        "ts": "2026-10-22T20:35:28+00:00",
        "lat": 46.65480000000000160298441187478601932525634765625,
        "lon": 142.557216699999997899794834665954113006591796875
    },
    "last_point": {
        "ts": "2026-10-23T03:07:11+00:00",
        "lat": 46.6485167000000018333594198338687419891357421875,
        "lon": 142.543049999999993815436027944087982177734375
    }
}
Methodology: 2026.01.18
Loiter Prigorodnoye/Sakhalin LNG
Oct 22, 2026 20:35 UTC 75.0% ▼
  • Duration: 6h 31m
  • Radius: 806 meters
  • Data Points: 44 AIS positions
  • Centroid: 46.6517, 142.5522
  • Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
    "radius_m": 805.8999999999999772626324556767940521240234375,
    "duration_minutes": 391.69999999999998863131622783839702606201171875,
    "points": 44,
    "centroid": {
        "lat": 46.65174319090906607243596226908266544342041015625,
        "lon": 142.552187509090884987017489038407802581787109375
    },
    "bbox": {
        "min_lat": 46.64811670000000276559148915112018585205078125,
        "min_lon": 142.5428666999999904874130152165889739990234375,
        "max_lat": 46.65523329999999901929186307825148105621337890625,
        "max_lon": 142.557316700000001219450496137142181396484375
    },
    "zone_id": "russia_prigorodnoye"
}
Methodology: 2026.01.18
Loiter Sakhalin South Approach
Oct 22, 2026 20:35 UTC 75.0% ▼
  • Duration: 6h 31m
  • Radius: 806 meters
  • Data Points: 44 AIS positions
  • Centroid: 46.6517, 142.5522
  • Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
    "radius_m": 805.8999999999999772626324556767940521240234375,
    "duration_minutes": 391.69999999999998863131622783839702606201171875,
    "points": 44,
    "centroid": {
        "lat": 46.65174319090906607243596226908266544342041015625,
        "lon": 142.552187509090884987017489038407802581787109375
    },
    "bbox": {
        "min_lat": 46.64811670000000276559148915112018585205078125,
        "min_lon": 142.5428666999999904874130152165889739990234375,
        "max_lat": 46.65523329999999901929186307825148105621337890625,
        "max_lon": 142.557316700000001219450496137142181396484375
    },
    "zone_id": "russia_sakhalin_south"
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 22, 2026 19:00 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 6h 32m
  • Data Points: 34 AIS positions
  • Period: 2026-10-22T19:46:23+00:00 to 2026-10-23T02:18:59+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 392.6000000000000227373675443232059478759765625,
    "points_in_zone": 34,
    "first_point": {
        "ts": "2026-10-22T19:46:23+00:00",
        "lat": 46.65480000000000160298441187478601932525634765625,
        "lon": 142.557166700000010450821719132363796234130859375
    },
    "last_point": {
        "ts": "2026-10-23T02:18:59+00:00",
        "lat": 46.6482333000000011224983609281480312347412109375,
        "lon": 142.5455332999999882304109632968902587890625
    }
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 22, 2026 19:00 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 6h 32m
  • Data Points: 34 AIS positions
  • Period: 2026-10-22T19:46:23+00:00 to 2026-10-23T02:18:59+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 392.6000000000000227373675443232059478759765625,
    "points_in_zone": 34,
    "first_point": {
        "ts": "2026-10-22T19:46:23+00:00",
        "lat": 46.65480000000000160298441187478601932525634765625,
        "lon": 142.557166700000010450821719132363796234130859375
    },
    "last_point": {
        "ts": "2026-10-23T02:18:59+00:00",
        "lat": 46.6482333000000011224983609281480312347412109375,
        "lon": 142.5455332999999882304109632968902587890625
    }
}
Methodology: 2026.01.18
Loiter Prigorodnoye/Sakhalin LNG
Oct 22, 2026 19:00 UTC 75.0% ▼
  • Duration: 6h 32m
  • Radius: 906 meters
  • Data Points: 34 AIS positions
  • Centroid: 46.6529, 142.5552
  • Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
    "radius_m": 906.1000000000000227373675443232059478759765625,
    "duration_minutes": 392.6000000000000227373675443232059478759765625,
    "points": 34,
    "centroid": {
        "lat": 46.6529254970588027617850457318127155303955078125,
        "lon": 142.55521226764705033929203636944293975830078125
    },
    "bbox": {
        "min_lat": 46.64811670000000276559148915112018585205078125,
        "min_lon": 142.5455332999999882304109632968902587890625,
        "max_lat": 46.65523329999999901929186307825148105621337890625,
        "max_lon": 142.557316700000001219450496137142181396484375
    },
    "zone_id": "russia_prigorodnoye"
}
Methodology: 2026.01.18
Loiter Sakhalin South Approach
Oct 22, 2026 19:00 UTC 75.0% ▼
  • Duration: 6h 32m
  • Radius: 906 meters
  • Data Points: 34 AIS positions
  • Centroid: 46.6529, 142.5552
  • Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
    "radius_m": 906.1000000000000227373675443232059478759765625,
    "duration_minutes": 392.6000000000000227373675443232059478759765625,
    "points": 34,
    "centroid": {
        "lat": 46.6529254970588027617850457318127155303955078125,
        "lon": 142.55521226764705033929203636944293975830078125
    },
    "bbox": {
        "min_lat": 46.64811670000000276559148915112018585205078125,
        "min_lon": 142.5455332999999882304109632968902587890625,
        "max_lat": 46.65523329999999901929186307825148105621337890625,
        "max_lon": 142.557316700000001219450496137142181396484375
    },
    "zone_id": "russia_sakhalin_south"
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 22, 2026 18:44 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 6h 30m
  • Data Points: 23 AIS positions
  • Period: 2026-10-22T18:44:15+00:00 to 2026-10-23T01:14:50+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 390.6000000000000227373675443232059478759765625,
    "points_in_zone": 23,
    "first_point": {
        "ts": "2026-10-22T18:44:15+00:00",
        "lat": 46.65483329999999995152393239550292491912841796875,
        "lon": 142.557383299999997916529537178575992584228515625
    },
    "last_point": {
        "ts": "2026-10-23T01:14:50+00:00",
        "lat": 46.6544999999999987494447850622236728668212890625,
        "lon": 142.5560166999999864856363274157047271728515625
    }
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 22, 2026 18:44 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 6h 30m
  • Data Points: 23 AIS positions
  • Period: 2026-10-22T18:44:15+00:00 to 2026-10-23T01:14:50+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 390.6000000000000227373675443232059478759765625,
    "points_in_zone": 23,
    "first_point": {
        "ts": "2026-10-22T18:44:15+00:00",
        "lat": 46.65483329999999995152393239550292491912841796875,
        "lon": 142.557383299999997916529537178575992584228515625
    },
    "last_point": {
        "ts": "2026-10-23T01:14:50+00:00",
        "lat": 46.6544999999999987494447850622236728668212890625,
        "lon": 142.5560166999999864856363274157047271728515625
    }
}
Methodology: 2026.01.18
Loiter Prigorodnoye/Sakhalin LNG
Oct 22, 2026 18:44 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 87 meters
  • Data Points: 23 AIS positions
  • Centroid: 46.6549, 142.5570
  • Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
    "radius_m": 87.2999999999999971578290569595992565155029296875,
    "duration_minutes": 390.6000000000000227373675443232059478759765625,
    "points": 23,
    "centroid": {
        "lat": 46.65489203478261259760984103195369243621826171875,
        "lon": 142.557004356521730414897319860756397247314453125
    },
    "bbox": {
        "min_lat": 46.65446670000000040090526454150676727294921875,
        "min_lon": 142.5560166999999864856363274157047271728515625,
        "max_lat": 46.65523329999999901929186307825148105621337890625,
        "max_lon": 142.557383299999997916529537178575992584228515625
    },
    "zone_id": "russia_prigorodnoye"
}
Methodology: 2026.01.18
Loiter Sakhalin South Approach
Oct 22, 2026 18:44 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 87 meters
  • Data Points: 23 AIS positions
  • Centroid: 46.6549, 142.5570
  • Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
    "radius_m": 87.2999999999999971578290569595992565155029296875,
    "duration_minutes": 390.6000000000000227373675443232059478759765625,
    "points": 23,
    "centroid": {
        "lat": 46.65489203478261259760984103195369243621826171875,
        "lon": 142.557004356521730414897319860756397247314453125
    },
    "bbox": {
        "min_lat": 46.65446670000000040090526454150676727294921875,
        "min_lon": 142.5560166999999864856363274157047271728515625,
        "max_lat": 46.65523329999999901929186307825148105621337890625,
        "max_lon": 142.557383299999997916529537178575992584228515625
    },
    "zone_id": "russia_sakhalin_south"
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 22, 2026 17:55 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 6h 32m
  • Data Points: 22 AIS positions
  • Period: 2026-10-22T17:55:10+00:00 to 2026-10-23T00:27:08+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 392,
    "points_in_zone": 22,
    "first_point": {
        "ts": "2026-10-22T17:55:10+00:00",
        "lat": 46.6550332999999994854078977368772029876708984375,
        "lon": 142.55703330000000050858943723142147064208984375
    },
    "last_point": {
        "ts": "2026-10-23T00:27:08+00:00",
        "lat": 46.65446670000000040090526454150676727294921875,
        "lon": 142.557316700000001219450496137142181396484375
    }
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 22, 2026 17:55 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 6h 32m
  • Data Points: 22 AIS positions
  • Period: 2026-10-22T17:55:10+00:00 to 2026-10-23T00:27:08+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 392,
    "points_in_zone": 22,
    "first_point": {
        "ts": "2026-10-22T17:55:10+00:00",
        "lat": 46.6550332999999994854078977368772029876708984375,
        "lon": 142.55703330000000050858943723142147064208984375
    },
    "last_point": {
        "ts": "2026-10-23T00:27:08+00:00",
        "lat": 46.65446670000000040090526454150676727294921875,
        "lon": 142.557316700000001219450496137142181396484375
    }
}
Methodology: 2026.01.18
Loiter Prigorodnoye/Sakhalin LNG
Oct 22, 2026 17:55 UTC 75.0% ▼
  • Duration: 6h 32m
  • Radius: 57 meters
  • Data Points: 22 AIS positions
  • Centroid: 46.6549, 142.5570
  • Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
    "radius_m": 56.5,
    "duration_minutes": 392,
    "points": 22,
    "centroid": {
        "lat": 46.65493788636363348132363171316683292388916015625,
        "lon": 142.5570401545454615188646130263805389404296875
    },
    "bbox": {
        "min_lat": 46.65446670000000040090526454150676727294921875,
        "min_lon": 142.55661670000000640357029624283313751220703125,
        "max_lat": 46.65523329999999901929186307825148105621337890625,
        "max_lon": 142.557383299999997916529537178575992584228515625
    },
    "zone_id": "russia_prigorodnoye"
}
Methodology: 2026.01.18
Loiter Sakhalin South Approach
Oct 22, 2026 17:55 UTC 75.0% ▼
  • Duration: 6h 32m
  • Radius: 57 meters
  • Data Points: 22 AIS positions
  • Centroid: 46.6549, 142.5570
  • Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
    "radius_m": 56.5,
    "duration_minutes": 392,
    "points": 22,
    "centroid": {
        "lat": 46.65493788636363348132363171316683292388916015625,
        "lon": 142.5570401545454615188646130263805389404296875
    },
    "bbox": {
        "min_lat": 46.65446670000000040090526454150676727294921875,
        "min_lon": 142.55661670000000640357029624283313751220703125,
        "max_lat": 46.65523329999999901929186307825148105621337890625,
        "max_lon": 142.557383299999997916529537178575992584228515625
    },
    "zone_id": "russia_sakhalin_south"
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 22, 2026 12:52 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 6h 31m
  • Data Points: 7 AIS positions
  • Period: 2026-10-22T12:52:36+00:00 to 2026-10-22T19:23:58+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 391.3999999999999772626324556767940521240234375,
    "points_in_zone": 7,
    "first_point": {
        "ts": "2026-10-22T12:52:36+00:00",
        "lat": 46.65466669999999993478922988288104534149169921875,
        "lon": 142.557316700000001219450496137142181396484375
    },
    "last_point": {
        "ts": "2026-10-22T19:23:58+00:00",
        "lat": 46.6548666999999994686731952242553234100341796875,
        "lon": 142.557183299999991277218214236199855804443359375
    }
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 22, 2026 12:52 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 6h 31m
  • Data Points: 7 AIS positions
  • Period: 2026-10-22T12:52:36+00:00 to 2026-10-22T19:23:58+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 391.3999999999999772626324556767940521240234375,
    "points_in_zone": 7,
    "first_point": {
        "ts": "2026-10-22T12:52:36+00:00",
        "lat": 46.65466669999999993478922988288104534149169921875,
        "lon": 142.557316700000001219450496137142181396484375
    },
    "last_point": {
        "ts": "2026-10-22T19:23:58+00:00",
        "lat": 46.6548666999999994686731952242553234100341796875,
        "lon": 142.557183299999991277218214236199855804443359375
    }
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 22, 2026 11:45 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 6h 11m
  • Data Points: 5 AIS positions
  • Period: 2026-10-22T11:45:56+00:00 to 2026-10-22T17:57:30+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 371.6000000000000227373675443232059478759765625,
    "points_in_zone": 5,
    "first_point": {
        "ts": "2026-10-22T11:45:56+00:00",
        "lat": 46.6544166999999987410774338059127330780029296875,
        "lon": 142.557466699999991988079273141920566558837890625
    },
    "last_point": {
        "ts": "2026-10-22T17:57:30+00:00",
        "lat": 46.65476670000000325444489135406911373138427734375,
        "lon": 142.557199999999994588506524451076984405517578125
    }
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 22, 2026 11:45 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 6h 11m
  • Data Points: 5 AIS positions
  • Period: 2026-10-22T11:45:56+00:00 to 2026-10-22T17:57:30+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 371.6000000000000227373675443232059478759765625,
    "points_in_zone": 5,
    "first_point": {
        "ts": "2026-10-22T11:45:56+00:00",
        "lat": 46.6544166999999987410774338059127330780029296875,
        "lon": 142.557466699999991988079273141920566558837890625
    },
    "last_point": {
        "ts": "2026-10-22T17:57:30+00:00",
        "lat": 46.65476670000000325444489135406911373138427734375,
        "lon": 142.557199999999994588506524451076984405517578125
    }
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 22, 2026 10:20 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 2h 37m
  • Data Points: 5 AIS positions
  • Period: 2026-10-22T10:20:48+00:00 to 2026-10-22T12:58:14+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 157.400000000000005684341886080801486968994140625,
    "points_in_zone": 5,
    "first_point": {
        "ts": "2026-10-22T10:20:48+00:00",
        "lat": 46.65485000000000326281224261038005352020263671875,
        "lon": 142.557183299999991277218214236199855804443359375
    },
    "last_point": {
        "ts": "2026-10-22T12:58:14+00:00",
        "lat": 46.6545167000000020607330952771008014678955078125,
        "lon": 142.55725000000001045918907038867473602294921875
    }
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 22, 2026 10:20 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 2h 37m
  • Data Points: 5 AIS positions
  • Period: 2026-10-22T10:20:48+00:00 to 2026-10-22T12:58:14+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 157.400000000000005684341886080801486968994140625,
    "points_in_zone": 5,
    "first_point": {
        "ts": "2026-10-22T10:20:48+00:00",
        "lat": 46.65485000000000326281224261038005352020263671875,
        "lon": 142.557183299999991277218214236199855804443359375
    },
    "last_point": {
        "ts": "2026-10-22T12:58:14+00:00",
        "lat": 46.6545167000000020607330952771008014678955078125,
        "lon": 142.55725000000001045918907038867473602294921875
    }
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 22, 2026 08:08 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 4h 49m
  • Data Points: 9 AIS positions
  • Period: 2026-10-22T08:08:41+00:00 to 2026-10-22T12:58:14+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 289.6000000000000227373675443232059478759765625,
    "points_in_zone": 9,
    "first_point": {
        "ts": "2026-10-22T08:08:41+00:00",
        "lat": 46.65416669999999754736563772894442081451416015625,
        "lon": 142.5573666999999886684236116707324981689453125
    },
    "last_point": {
        "ts": "2026-10-22T12:58:14+00:00",
        "lat": 46.6545167000000020607330952771008014678955078125,
        "lon": 142.55725000000001045918907038867473602294921875
    }
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 22, 2026 08:08 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 4h 49m
  • Data Points: 9 AIS positions
  • Period: 2026-10-22T08:08:41+00:00 to 2026-10-22T12:58:14+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 289.6000000000000227373675443232059478759765625,
    "points_in_zone": 9,
    "first_point": {
        "ts": "2026-10-22T08:08:41+00:00",
        "lat": 46.65416669999999754736563772894442081451416015625,
        "lon": 142.5573666999999886684236116707324981689453125
    },
    "last_point": {
        "ts": "2026-10-22T12:58:14+00:00",
        "lat": 46.6545167000000020607330952771008014678955078125,
        "lon": 142.55725000000001045918907038867473602294921875
    }
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 22, 2026 07:08 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 5h 49m
  • Data Points: 12 AIS positions
  • Period: 2026-10-22T07:08:57+00:00 to 2026-10-22T12:58:14+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 349.30000000000001136868377216160297393798828125,
    "points_in_zone": 12,
    "first_point": {
        "ts": "2026-10-22T07:08:57+00:00",
        "lat": 46.6532667000000031976014724932610988616943359375,
        "lon": 142.55698330000001305961632169783115386962890625
    },
    "last_point": {
        "ts": "2026-10-22T12:58:14+00:00",
        "lat": 46.6545167000000020607330952771008014678955078125,
        "lon": 142.55725000000001045918907038867473602294921875
    }
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 22, 2026 07:08 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 5h 49m
  • Data Points: 12 AIS positions
  • Period: 2026-10-22T07:08:57+00:00 to 2026-10-22T12:58:14+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 349.30000000000001136868377216160297393798828125,
    "points_in_zone": 12,
    "first_point": {
        "ts": "2026-10-22T07:08:57+00:00",
        "lat": 46.6532667000000031976014724932610988616943359375,
        "lon": 142.55698330000001305961632169783115386962890625
    },
    "last_point": {
        "ts": "2026-10-22T12:58:14+00:00",
        "lat": 46.6545167000000020607330952771008014678955078125,
        "lon": 142.55725000000001045918907038867473602294921875
    }
}
Methodology: 2026.01.18
Loiter Prigorodnoye/Sakhalin LNG
Oct 22, 2026 07:08 UTC 75.0% ▼
  • Duration: 5h 49m
  • Radius: 114 meters
  • Data Points: 12 AIS positions
  • Centroid: 46.6543, 142.5573
  • Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
    "radius_m": 113.599999999999994315658113919198513031005859375,
    "duration_minutes": 349.30000000000001136868377216160297393798828125,
    "points": 12,
    "centroid": {
        "lat": 46.654266675000002351225703023374080657958984375,
        "lon": 142.557290283333344405036768876016139984130859375
    },
    "bbox": {
        "min_lat": 46.6532667000000031976014724932610988616943359375,
        "min_lon": 142.55698330000001305961632169783115386962890625,
        "max_lat": 46.65485000000000326281224261038005352020263671875,
        "max_lon": 142.557466699999991988079273141920566558837890625
    },
    "zone_id": "russia_prigorodnoye"
}
Methodology: 2026.01.18
Loiter Sakhalin South Approach
Oct 22, 2026 07:08 UTC 75.0% ▼
  • Duration: 5h 49m
  • Radius: 114 meters
  • Data Points: 12 AIS positions
  • Centroid: 46.6543, 142.5573
  • Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
    "radius_m": 113.599999999999994315658113919198513031005859375,
    "duration_minutes": 349.30000000000001136868377216160297393798828125,
    "points": 12,
    "centroid": {
        "lat": 46.654266675000002351225703023374080657958984375,
        "lon": 142.557290283333344405036768876016139984130859375
    },
    "bbox": {
        "min_lat": 46.6532667000000031976014724932610988616943359375,
        "min_lon": 142.55698330000001305961632169783115386962890625,
        "max_lat": 46.65485000000000326281224261038005352020263671875,
        "max_lon": 142.557466699999991988079273141920566558837890625
    },
    "zone_id": "russia_sakhalin_south"
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 22, 2026 06:04 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 6h 11m
  • Data Points: 13 AIS positions
  • Period: 2026-10-22T06:46:45+00:00 to 2026-10-22T12:58:14+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 371.5,
    "points_in_zone": 13,
    "first_point": {
        "ts": "2026-10-22T06:46:45+00:00",
        "lat": 46.6532667000000031976014724932610988616943359375,
        "lon": 142.55703330000000050858943723142147064208984375
    },
    "last_point": {
        "ts": "2026-10-22T12:58:14+00:00",
        "lat": 46.6545167000000020607330952771008014678955078125,
        "lon": 142.55725000000001045918907038867473602294921875
    }
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 22, 2026 06:04 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 6h 11m
  • Data Points: 13 AIS positions
  • Period: 2026-10-22T06:46:45+00:00 to 2026-10-22T12:58:14+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 371.5,
    "points_in_zone": 13,
    "first_point": {
        "ts": "2026-10-22T06:46:45+00:00",
        "lat": 46.6532667000000031976014724932610988616943359375,
        "lon": 142.55703330000000050858943723142147064208984375
    },
    "last_point": {
        "ts": "2026-10-22T12:58:14+00:00",
        "lat": 46.6545167000000020607330952771008014678955078125,
        "lon": 142.55725000000001045918907038867473602294921875
    }
}
Methodology: 2026.01.18
Loiter Prigorodnoye/Sakhalin LNG
Oct 22, 2026 06:04 UTC 75.0% ▼
  • Duration: 6h 11m
  • Radius: 105 meters
  • Data Points: 13 AIS positions
  • Centroid: 46.6542, 142.5573
  • Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
    "radius_m": 104.900000000000005684341886080801486968994140625,
    "duration_minutes": 371.5,
    "points": 13,
    "centroid": {
        "lat": 46.6541897538461540762000367976725101470947265625,
        "lon": 142.5572705153846300163422711193561553955078125
    },
    "bbox": {
        "min_lat": 46.6532667000000031976014724932610988616943359375,
        "min_lon": 142.55698330000001305961632169783115386962890625,
        "max_lat": 46.65485000000000326281224261038005352020263671875,
        "max_lon": 142.557466699999991988079273141920566558837890625
    },
    "zone_id": "russia_prigorodnoye"
}
Methodology: 2026.01.18
Loiter Sakhalin South Approach
Oct 22, 2026 06:04 UTC 75.0% ▼
  • Duration: 6h 11m
  • Radius: 105 meters
  • Data Points: 13 AIS positions
  • Centroid: 46.6542, 142.5573
  • Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
    "radius_m": 104.900000000000005684341886080801486968994140625,
    "duration_minutes": 371.5,
    "points": 13,
    "centroid": {
        "lat": 46.6541897538461540762000367976725101470947265625,
        "lon": 142.5572705153846300163422711193561553955078125
    },
    "bbox": {
        "min_lat": 46.6532667000000031976014724932610988616943359375,
        "min_lon": 142.55698330000001305961632169783115386962890625,
        "max_lat": 46.65485000000000326281224261038005352020263671875,
        "max_lon": 142.557466699999991988079273141920566558837890625
    },
    "zone_id": "russia_sakhalin_south"
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 22, 2026 05:00 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 6h 24m
  • Data Points: 21 AIS positions
  • Period: 2026-10-22T05:21:56+00:00 to 2026-10-22T11:45:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 384,
    "points_in_zone": 21,
    "first_point": {
        "ts": "2026-10-22T05:21:56+00:00",
        "lat": 46.65308329999999870096871745772659778594970703125,
        "lon": 142.55678330000000642030499875545501708984375
    },
    "last_point": {
        "ts": "2026-10-22T11:45:56+00:00",
        "lat": 46.6544166999999987410774338059127330780029296875,
        "lon": 142.557466699999991988079273141920566558837890625
    }
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 22, 2026 05:00 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 6h 24m
  • Data Points: 21 AIS positions
  • Period: 2026-10-22T05:21:56+00:00 to 2026-10-22T11:45:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 384,
    "points_in_zone": 21,
    "first_point": {
        "ts": "2026-10-22T05:21:56+00:00",
        "lat": 46.65308329999999870096871745772659778594970703125,
        "lon": 142.55678330000000642030499875545501708984375
    },
    "last_point": {
        "ts": "2026-10-22T11:45:56+00:00",
        "lat": 46.6544166999999987410774338059127330780029296875,
        "lon": 142.557466699999991988079273141920566558837890625
    }
}
Methodology: 2026.01.18
Loiter Prigorodnoye/Sakhalin LNG
Oct 22, 2026 05:00 UTC 75.0% ▼
  • Duration: 6h 24m
  • Radius: 142 meters
  • Data Points: 21 AIS positions
  • Centroid: 46.6536, 142.5570
  • Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
    "radius_m": 141.599999999999994315658113919198513031005859375,
    "duration_minutes": 384,
    "points": 21,
    "centroid": {
        "lat": 46.653583333333330074310651980340480804443359375,
        "lon": 142.5569825333333255912293680012226104736328125
    },
    "bbox": {
        "min_lat": 46.65268329999999963320078677497804164886474609375,
        "min_lon": 142.556283299999989822026691399514675140380859375,
        "max_lat": 46.65485000000000326281224261038005352020263671875,
        "max_lon": 142.557466699999991988079273141920566558837890625
    },
    "zone_id": "russia_prigorodnoye"
}
Methodology: 2026.01.18
Loiter Sakhalin South Approach
Oct 22, 2026 05:00 UTC 75.0% ▼
  • Duration: 6h 24m
  • Radius: 142 meters
  • Data Points: 21 AIS positions
  • Centroid: 46.6536, 142.5570
  • Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
    "radius_m": 141.599999999999994315658113919198513031005859375,
    "duration_minutes": 384,
    "points": 21,
    "centroid": {
        "lat": 46.653583333333330074310651980340480804443359375,
        "lon": 142.5569825333333255912293680012226104736328125
    },
    "bbox": {
        "min_lat": 46.65268329999999963320078677497804164886474609375,
        "min_lon": 142.556283299999989822026691399514675140380859375,
        "max_lat": 46.65485000000000326281224261038005352020263671875,
        "max_lon": 142.557466699999991988079273141920566558837890625
    },
    "zone_id": "russia_sakhalin_south"
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 22, 2026 04:07 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 6h 26m
  • Data Points: 24 AIS positions
  • Period: 2026-10-22T04:28:11+00:00 to 2026-10-22T10:54:22+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 386.19999999999998863131622783839702606201171875,
    "points_in_zone": 24,
    "first_point": {
        "ts": "2026-10-22T04:28:11+00:00",
        "lat": 46.653216700000001537773641757667064666748046875,
        "lon": 142.557016699999991260483511723577976226806640625
    },
    "last_point": {
        "ts": "2026-10-22T10:54:22+00:00",
        "lat": 46.6545832999999987578121363185346126556396484375,
        "lon": 142.557383299999997916529537178575992584228515625
    }
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 22, 2026 04:07 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 6h 26m
  • Data Points: 24 AIS positions
  • Period: 2026-10-22T04:28:11+00:00 to 2026-10-22T10:54:22+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 386.19999999999998863131622783839702606201171875,
    "points_in_zone": 24,
    "first_point": {
        "ts": "2026-10-22T04:28:11+00:00",
        "lat": 46.653216700000001537773641757667064666748046875,
        "lon": 142.557016699999991260483511723577976226806640625
    },
    "last_point": {
        "ts": "2026-10-22T10:54:22+00:00",
        "lat": 46.6545832999999987578121363185346126556396484375,
        "lon": 142.557383299999997916529537178575992584228515625
    }
}
Methodology: 2026.01.18
Loiter Prigorodnoye/Sakhalin LNG
Oct 22, 2026 04:07 UTC 75.0% ▼
  • Duration: 6h 26m
  • Radius: 156 meters
  • Data Points: 24 AIS positions
  • Centroid: 46.6535, 142.5569
  • Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
    "radius_m": 156.19999999999998863131622783839702606201171875,
    "duration_minutes": 386.19999999999998863131622783839702606201171875,
    "points": 24,
    "centroid": {
        "lat": 46.65345694583333369109823252074420452117919921875,
        "lon": 142.556918745833314687843085266649723052978515625
    },
    "bbox": {
        "min_lat": 46.65268329999999963320078677497804164886474609375,
        "min_lon": 142.556283299999989822026691399514675140380859375,
        "max_lat": 46.65485000000000326281224261038005352020263671875,
        "max_lon": 142.557383299999997916529537178575992584228515625
    },
    "zone_id": "russia_prigorodnoye"
}
Methodology: 2026.01.18
Loiter Sakhalin South Approach
Oct 22, 2026 04:07 UTC 75.0% ▼
  • Duration: 6h 26m
  • Radius: 156 meters
  • Data Points: 24 AIS positions
  • Centroid: 46.6535, 142.5569
  • Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
    "radius_m": 156.19999999999998863131622783839702606201171875,
    "duration_minutes": 386.19999999999998863131622783839702606201171875,
    "points": 24,
    "centroid": {
        "lat": 46.65345694583333369109823252074420452117919921875,
        "lon": 142.556918745833314687843085266649723052978515625
    },
    "bbox": {
        "min_lat": 46.65268329999999963320078677497804164886474609375,
        "min_lon": 142.556283299999989822026691399514675140380859375,
        "max_lat": 46.65485000000000326281224261038005352020263671875,
        "max_lon": 142.557383299999997916529537178575992584228515625
    },
    "zone_id": "russia_sakhalin_south"
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 22, 2026 03:40 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 6h 25m
  • Data Points: 25 AIS positions
  • Period: 2026-10-22T03:55:17+00:00 to 2026-10-22T10:20:48+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 385.5,
    "points_in_zone": 25,
    "first_point": {
        "ts": "2026-10-22T03:55:17+00:00",
        "lat": 46.652766700000000810177880339324474334716796875,
        "lon": 142.5563667000000123152858577668666839599609375
    },
    "last_point": {
        "ts": "2026-10-22T10:20:48+00:00",
        "lat": 46.65485000000000326281224261038005352020263671875,
        "lon": 142.557183299999991277218214236199855804443359375
    }
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 22, 2026 03:40 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 6h 25m
  • Data Points: 25 AIS positions
  • Period: 2026-10-22T03:55:17+00:00 to 2026-10-22T10:20:48+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 385.5,
    "points_in_zone": 25,
    "first_point": {
        "ts": "2026-10-22T03:55:17+00:00",
        "lat": 46.652766700000000810177880339324474334716796875,
        "lon": 142.5563667000000123152858577668666839599609375
    },
    "last_point": {
        "ts": "2026-10-22T10:20:48+00:00",
        "lat": 46.65485000000000326281224261038005352020263671875,
        "lon": 142.557183299999991277218214236199855804443359375
    }
}
Methodology: 2026.01.18
Loiter Prigorodnoye/Sakhalin LNG
Oct 22, 2026 03:40 UTC 75.0% ▼
  • Duration: 6h 25m
  • Radius: 167 meters
  • Data Points: 25 AIS positions
  • Centroid: 46.6534, 142.5569
  • Zone: Prigorodnoye/Sakhalin LNG
Show Raw Evidence JSON
{
    "radius_m": 166.80000000000001136868377216160297393798828125,
    "duration_minutes": 385.5,
    "points": 25,
    "centroid": {
        "lat": 46.653365336000007346228812821209430694580078125,
        "lon": 142.5568680000000085783540271222591400146484375
    },
    "bbox": {
        "min_lat": 46.65268329999999963320078677497804164886474609375,
        "min_lon": 142.556283299999989822026691399514675140380859375,
        "max_lat": 46.65485000000000326281224261038005352020263671875,
        "max_lon": 142.5573666999999886684236116707324981689453125
    },
    "zone_id": "russia_prigorodnoye"
}
Methodology: 2026.01.18
Loiter Sakhalin South Approach
Oct 22, 2026 03:40 UTC 75.0% ▼
  • Duration: 6h 25m
  • Radius: 167 meters
  • Data Points: 25 AIS positions
  • Centroid: 46.6534, 142.5569
  • Zone: Sakhalin South Approach
Show Raw Evidence JSON
{
    "radius_m": 166.80000000000001136868377216160297393798828125,
    "duration_minutes": 385.5,
    "points": 25,
    "centroid": {
        "lat": 46.653365336000007346228812821209430694580078125,
        "lon": 142.5568680000000085783540271222591400146484375
    },
    "bbox": {
        "min_lat": 46.65268329999999963320078677497804164886474609375,
        "min_lon": 142.556283299999989822026691399514675140380859375,
        "max_lat": 46.65485000000000326281224261038005352020263671875,
        "max_lon": 142.5573666999999886684236116707324981689453125
    },
    "zone_id": "russia_sakhalin_south"
}
Methodology: 2026.01.18
Zone Dwell Prigorodnoye/Sakhalin LNG
Oct 22, 2026 02:01 UTC 80.0% ▼
  • Zone: Prigorodnoye/Sakhalin LNG
  • Duration: 6h 38m
  • Data Points: 31 AIS positions
  • Period: 2026-10-22T02:20:57+00:00 to 2026-10-22T08:59:27+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 398.5,
    "points_in_zone": 31,
    "first_point": {
        "ts": "2026-10-22T02:20:57+00:00",
        "lat": 46.65308329999999870096871745772659778594970703125,
        "lon": 142.55684999999999718056642450392246246337890625
    },
    "last_point": {
        "ts": "2026-10-22T08:59:27+00:00",
        "lat": 46.65448330000000254358383244834840297698974609375,
        "lon": 142.557316700000001219450496137142181396484375
    }
}
Methodology: 2026.01.18
Zone Dwell Sakhalin South Approach
Oct 22, 2026 02:01 UTC 80.0% ▼
  • Zone: Sakhalin South Approach
  • Duration: 6h 38m
  • Data Points: 31 AIS positions
  • Period: 2026-10-22T02:20:57+00:00 to 2026-10-22T08:59:27+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 398.5,
    "points_in_zone": 31,
    "first_point": {
        "ts": "2026-10-22T02:20:57+00:00",
        "lat": 46.65308329999999870096871745772659778594970703125,
        "lon": 142.55684999999999718056642450392246246337890625
    },
    "last_point": {
        "ts": "2026-10-22T08:59:27+00:00",
        "lat": 46.65448330000000254358383244834840297698974609375,
        "lon": 142.557316700000001219450496137142181396484375
    }
}
Methodology: 2026.01.18

Recent Position Data

Time (UTC) Lat Lon Speed Course Zone
Oct 23 08:52 46.6497 142.5426 0.2 kn 359.3° Prigorodnoye/Sakhalin LNG
Oct 23 08:44 46.6494 142.5429 0.1 kn 318.5° Prigorodnoye/Sakhalin LNG
Oct 23 08:42 46.6494 142.5429 0.1 kn 321.4° Prigorodnoye/Sakhalin LNG
Oct 23 08:34 46.6494 142.5429 0.0 kn 360.0° Prigorodnoye/Sakhalin LNG
Oct 23 08:28 46.6495 142.5429 0.0 kn 360.0° Prigorodnoye/Sakhalin LNG
Oct 23 08:19 46.6494 142.5428 0.0 kn 360.0° Prigorodnoye/Sakhalin LNG
Oct 23 08:13 46.6494 142.5429 0.1 kn 320.6° Prigorodnoye/Sakhalin LNG
Oct 23 07:40 46.6493 142.5430 0.0 kn 360.0° Prigorodnoye/Sakhalin LNG
Oct 23 06:43 46.6492 142.5430 0.0 kn 360.0° Prigorodnoye/Sakhalin LNG
Oct 23 06:34 46.6489 142.5431 0.1 kn 65.9° Prigorodnoye/Sakhalin LNG
Oct 23 05:55 46.6489 142.5431 0.1 kn 155.9° Prigorodnoye/Sakhalin LNG
Oct 23 04:59 46.6488 142.5431 0.3 kn 334.7° Prigorodnoye/Sakhalin LNG
Oct 23 04:25 46.6484 142.5431 0.0 kn 360.0° Prigorodnoye/Sakhalin LNG
Oct 23 03:52 46.6482 142.5431 0.0 kn 360.0° Prigorodnoye/Sakhalin LNG
Oct 23 03:07 46.6485 142.5431 0.0 kn 360.0° Prigorodnoye/Sakhalin LNG
Oct 23 03:04 46.6485 142.5431 0.0 kn 360.0° Prigorodnoye/Sakhalin LNG
Oct 23 03:00 46.6484 142.5430 0.1 kn 356.8° Prigorodnoye/Sakhalin LNG
Oct 23 02:56 46.6484 142.5429 0.1 kn 77.1° Prigorodnoye/Sakhalin LNG
Oct 23 02:54 46.6484 142.5430 0.0 kn 360.0° Prigorodnoye/Sakhalin LNG
Oct 23 02:46 46.6485 142.5429 0.1 kn 119.6° 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.