Omsk

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 106.7000000000000028421709430404007434844970703125,
    "points_in_zone": 40,
    "first_point": {
        "ts": "2026-08-26T06:00:17+00:00",
        "lat": 46.45466669999999709261828684248030185699462890625,
        "lon": 142.838510000000013633325579576194286346435546875
    },
    "last_point": {
        "ts": "2026-08-26T07:46:58+00:00",
        "lat": 46.26546499999999895180735620670020580291748046875,
        "lon": 143.13506000000000994987203739583492279052734375
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 106.7000000000000028421709430404007434844970703125,
    "points_in_zone": 40,
    "first_point": {
        "ts": "2026-08-26T06:00:17+00:00",
        "lat": 46.45466669999999709261828684248030185699462890625,
        "lon": 142.838510000000013633325579576194286346435546875
    },
    "last_point": {
        "ts": "2026-08-26T07:46:58+00:00",
        "lat": 46.26546499999999895180735620670020580291748046875,
        "lon": 143.13506000000000994987203739583492279052734375
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 165.19999999999998863131622783839702606201171875,
    "points_in_zone": 58,
    "first_point": {
        "ts": "2026-08-26T05:01:49+00:00",
        "lat": 46.56385999999999825149643584154546260833740234375,
        "lon": 142.66622000000000980435288511216640472412109375
    },
    "last_point": {
        "ts": "2026-08-26T07:46:58+00:00",
        "lat": 46.26546499999999895180735620670020580291748046875,
        "lon": 143.13506000000000994987203739583492279052734375
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 165.19999999999998863131622783839702606201171875,
    "points_in_zone": 58,
    "first_point": {
        "ts": "2026-08-26T05:01:49+00:00",
        "lat": 46.56385999999999825149643584154546260833740234375,
        "lon": 142.66622000000000980435288511216640472412109375
    },
    "last_point": {
        "ts": "2026-08-26T07:46:58+00:00",
        "lat": 46.26546499999999895180735620670020580291748046875,
        "lon": 143.13506000000000994987203739583492279052734375
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 226.80000000000001136868377216160297393798828125,
    "points_in_zone": 78,
    "first_point": {
        "ts": "2026-08-26T04:00:08+00:00",
        "lat": 46.66563000000000016598278307355940341949462890625,
        "lon": 142.652590000000003556124283932149410247802734375
    },
    "last_point": {
        "ts": "2026-08-26T07:46:58+00:00",
        "lat": 46.26546499999999895180735620670020580291748046875,
        "lon": 143.13506000000000994987203739583492279052734375
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 226.80000000000001136868377216160297393798828125,
    "points_in_zone": 78,
    "first_point": {
        "ts": "2026-08-26T04:00:08+00:00",
        "lat": 46.66563000000000016598278307355940341949462890625,
        "lon": 142.652590000000003556124283932149410247802734375
    },
    "last_point": {
        "ts": "2026-08-26T07:46:58+00:00",
        "lat": 46.26546499999999895180735620670020580291748046875,
        "lon": 143.13506000000000994987203739583492279052734375
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 254.19999999999998863131622783839702606201171875,
    "points_in_zone": 85,
    "first_point": {
        "ts": "2026-08-26T03:32:43+00:00",
        "lat": 46.66226000000000340151018463075160980224609375,
        "lon": 142.662601700000010396252037025988101959228515625
    },
    "last_point": {
        "ts": "2026-08-26T07:46:58+00:00",
        "lat": 46.26546499999999895180735620670020580291748046875,
        "lon": 143.13506000000000994987203739583492279052734375
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 254.19999999999998863131622783839702606201171875,
    "points_in_zone": 85,
    "first_point": {
        "ts": "2026-08-26T03:32:43+00:00",
        "lat": 46.66226000000000340151018463075160980224609375,
        "lon": 142.662601700000010396252037025988101959228515625
    },
    "last_point": {
        "ts": "2026-08-26T07:46:58+00:00",
        "lat": 46.26546499999999895180735620670020580291748046875,
        "lon": 143.13506000000000994987203739583492279052734375
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "min_distance_m": 17.800000000000000710542735760100185871124267578125,
    "avg_distance_m": 43.2999999999999971578290569595992565155029296875,
    "distance_consistency_m": 13.699999999999999289457264239899814128875732421875,
    "duration_minutes": 61.10000000000000142108547152020037174224853515625,
    "overlap_duration_s": 3666,
    "speed_a_avg": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_a_std": 0.320000000000000006661338147750939242541790008544921875,
    "speed_b_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_b_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1499999999999999944488848768742172978818416595458984375,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-08-26T02:38:43+00:00",
        "end": "2026-08-26T03:39:49+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 82,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 18m, avg 43m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 61 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b114m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and PROXIMA) maintained close proximity (min 18m, avg 43m) for 61 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": "inconclusive",
        "centroid": {
            "lat": 46.66154709999999994352037901990115642547607421875,
            "lon": 142.661116700000007995186024345457553863525390625
        },
        "time_window": {
            "start_ts": "2026-08-26T02:38:43+00:00",
            "end_ts": "2026-08-26T03:39:49+00:00"
        },
        "searched_at": "2026-08-26T09:15:01.907909+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260825T203937_20260825T204002_004287_007E4B_2260_COG",
        "scene_datetime": "2026-08-25T20:39:37.994435Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 140.56968699999998761995811946690082550048828125,
            "min_lat": 46.11166399999999754300006316043436527252197265625,
            "max_lon": 144.29180900000000065119820646941661834716796875,
            "max_lat": 48.00600399999999723377186455763876438140869140625
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1132981_thumbnail_20260826091506.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1132981_thumbnail_20260826091506.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "min_distance_m": 17.800000000000000710542735760100185871124267578125,
    "avg_distance_m": 43.2999999999999971578290569595992565155029296875,
    "distance_consistency_m": 13.699999999999999289457264239899814128875732421875,
    "duration_minutes": 61.10000000000000142108547152020037174224853515625,
    "overlap_duration_s": 3666,
    "speed_a_avg": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_a_std": 0.320000000000000006661338147750939242541790008544921875,
    "speed_b_avg": 0.070000000000000006661338147750939242541790008544921875,
    "speed_b_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1499999999999999944488848768742172978818416595458984375,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0.070000000000000006661338147750939242541790008544921875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-08-26T02:38:43+00:00",
        "end": "2026-08-26T03:39:49+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 82,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 18m, avg 43m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 61 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b114m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and PROXIMA) maintained close proximity (min 18m, avg 43m) for 61 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": "inconclusive",
        "centroid": {
            "lat": 46.66154709999999994352037901990115642547607421875,
            "lon": 142.661116700000007995186024345457553863525390625
        },
        "time_window": {
            "start_ts": "2026-08-26T02:38:43+00:00",
            "end_ts": "2026-08-26T03:39:49+00:00"
        },
        "searched_at": "2026-08-26T09:00:18.191107+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260825T203937_20260825T204002_004287_007E4B_2260_COG",
        "scene_datetime": "2026-08-25T20:39:37.994435Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 140.56968699999998761995811946690082550048828125,
            "min_lat": 46.11166399999999754300006316043436527252197265625,
            "max_lon": 144.29180900000000065119820646941661834716796875,
            "max_lat": 48.00600399999999723377186455763876438140869140625
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1132980_thumbnail_20260826090022.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1132980_thumbnail_20260826090022.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "min_distance_m": 17.800000000000000710542735760100185871124267578125,
    "avg_distance_m": 39.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 10.199999999999999289457264239899814128875732421875,
    "duration_minutes": 148.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 8887,
    "speed_a_avg": 0.11999999999999999555910790149937383830547332763671875,
    "speed_a_std": 0.2200000000000000011102230246251565404236316680908203125,
    "speed_b_avg": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_b_std": 0.200000000000000011102230246251565404236316680908203125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.11999999999999999555910790149937383830547332763671875,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0.1600000000000000033306690738754696212708950042724609375,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-08-26T01:11:42+00:00",
        "end": "2026-08-26T03:39:49+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 18m, avg 40m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 148 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b110m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and PROXIMA) maintained close proximity (min 18m, avg 40m) for 148 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 46.66174550000000209593054023571312427520751953125,
            "lon": 142.66022709999998596686054952442646026611328125
        },
        "time_window": {
            "start_ts": "2026-08-26T01:11:42+00:00",
            "end_ts": "2026-08-26T03:39:49+00:00"
        },
        "searched_at": "2026-08-26T07:45:17.965421+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260825T203937_20260825T204002_004287_007E4B_2260_COG",
        "scene_datetime": "2026-08-25T20:39:37.994435Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 140.56968699999998761995811946690082550048828125,
            "min_lat": 46.11166399999999754300006316043436527252197265625,
            "max_lon": 144.29180900000000065119820646941661834716796875,
            "max_lat": 48.00600399999999723377186455763876438140869140625
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1132328_thumbnail_20260826074521.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1132328_thumbnail_20260826074521.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "min_distance_m": 17.800000000000000710542735760100185871124267578125,
    "avg_distance_m": 39.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 10.199999999999999289457264239899814128875732421875,
    "duration_minutes": 148.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 8887,
    "speed_a_avg": 0.11999999999999999555910790149937383830547332763671875,
    "speed_a_std": 0.2200000000000000011102230246251565404236316680908203125,
    "speed_b_avg": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_b_std": 0.200000000000000011102230246251565404236316680908203125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.11999999999999999555910790149937383830547332763671875,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0.1600000000000000033306690738754696212708950042724609375,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-08-26T01:11:42+00:00",
        "end": "2026-08-26T03:39:49+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 18m, avg 40m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 148 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b110m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and PROXIMA) maintained close proximity (min 18m, avg 40m) for 148 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 46.66174550000000209593054023571312427520751953125,
            "lon": 142.66022709999998596686054952442646026611328125
        },
        "time_window": {
            "start_ts": "2026-08-26T01:11:42+00:00",
            "end_ts": "2026-08-26T03:39:49+00:00"
        },
        "searched_at": "2026-08-26T07:45:13.346283+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260825T203937_20260825T204002_004287_007E4B_2260_COG",
        "scene_datetime": "2026-08-25T20:39:37.994435Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 140.56968699999998761995811946690082550048828125,
            "min_lat": 46.11166399999999754300006316043436527252197265625,
            "max_lon": 144.29180900000000065119820646941661834716796875,
            "max_lat": 48.00600399999999723377186455763876438140869140625
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1132327_thumbnail_20260826074516.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1132327_thumbnail_20260826074516.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "min_distance_m": 17.800000000000000710542735760100185871124267578125,
    "avg_distance_m": 39.7000000000000028421709430404007434844970703125,
    "distance_consistency_m": 10.199999999999999289457264239899814128875732421875,
    "duration_minutes": 211.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 12667,
    "speed_a_avg": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.200000000000000011102230246251565404236316680908203125,
    "speed_b_avg": 0.299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.440000000000000002220446049250313080847263336181640625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.11000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0.299999999999999988897769753748434595763683319091796875,
            "max_sog": 1.6999999999999999555910790149937383830547332763671875
        }
    },
    "time_window": {
        "start": "2026-08-26T00:08:42+00:00",
        "end": "2026-08-26T03:39:49+00:00"
    },
    "points_count": {
        "vessel_a": 16,
        "vessel_b": 16
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 92,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 18m, avg 40m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 211 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b110m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and PROXIMA) maintained close proximity (min 18m, avg 40m) for 211 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "min_distance_m": 17.800000000000000710542735760100185871124267578125,
    "avg_distance_m": 39.7000000000000028421709430404007434844970703125,
    "distance_consistency_m": 10.199999999999999289457264239899814128875732421875,
    "duration_minutes": 211.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 12667,
    "speed_a_avg": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.200000000000000011102230246251565404236316680908203125,
    "speed_b_avg": 0.299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.440000000000000002220446049250313080847263336181640625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.11000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0.299999999999999988897769753748434595763683319091796875,
            "max_sog": 1.6999999999999999555910790149937383830547332763671875
        }
    },
    "time_window": {
        "start": "2026-08-26T00:08:42+00:00",
        "end": "2026-08-26T03:39:49+00:00"
    },
    "points_count": {
        "vessel_a": 16,
        "vessel_b": 16
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 92,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 18m, avg 40m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 211 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b110m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and PROXIMA) maintained close proximity (min 18m, avg 40m) for 211 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "radius_m": 1010.299999999999954525264911353588104248046875,
    "duration_minutes": 249.099999999999994315658113919198513031005859375,
    "points": 28,
    "centroid": {
        "lat": 46.66271976071428895238568657077848911285400390625,
        "lon": 142.657226614285690402539330534636974334716796875
    },
    "bbox": {
        "min_lat": 46.65738830000000092468326329253613948822021484375,
        "min_lon": 142.64653670000001284279278479516506195068359375,
        "max_lat": 46.66736670000000231084413826465606689453125,
        "max_lon": 142.662601700000010396252037025988101959228515625
    },
    "zone_id": "russia_sakhalin_south"
}

{
    "radius_m": 1010.299999999999954525264911353588104248046875,
    "duration_minutes": 249.099999999999994315658113919198513031005859375,
    "points": 28,
    "centroid": {
        "lat": 46.66271976071428895238568657077848911285400390625,
        "lon": 142.657226614285690402539330534636974334716796875
    },
    "bbox": {
        "min_lat": 46.65738830000000092468326329253613948822021484375,
        "min_lon": 142.64653670000001284279278479516506195068359375,
        "max_lat": 46.66736670000000231084413826465606689453125,
        "max_lon": 142.662601700000010396252037025988101959228515625
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 399.30000000000001136868377216160297393798828125,
    "points_in_zone": 92,
    "first_point": {
        "ts": "2026-08-26T00:50:42+00:00",
        "lat": 46.66259670000000170375642483122646808624267578125,
        "lon": 142.659443299999992404991644434630870819091796875
    },
    "last_point": {
        "ts": "2026-08-26T07:29:58+00:00",
        "lat": 46.31427999999999656211002729833126068115234375,
        "lon": 143.111046700000002829256118275225162506103515625
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 399.30000000000001136868377216160297393798828125,
    "points_in_zone": 92,
    "first_point": {
        "ts": "2026-08-26T00:50:42+00:00",
        "lat": 46.66259670000000170375642483122646808624267578125,
        "lon": 142.659443299999992404991644434630870819091796875
    },
    "last_point": {
        "ts": "2026-08-26T07:29:58+00:00",
        "lat": 46.31427999999999656211002729833126068115234375,
        "lon": 143.111046700000002829256118275225162506103515625
    }
}

{
    "radius_m": 1031.09999999999990905052982270717620849609375,
    "duration_minutes": 303.1000000000000227373675443232059478759765625,
    "points": 34,
    "centroid": {
        "lat": 46.66245142058824058040045201778411865234375,
        "lon": 142.65782368529409041002509184181690216064453125
    },
    "bbox": {
        "min_lat": 46.65738830000000092468326329253613948822021484375,
        "min_lon": 142.64653670000001284279278479516506195068359375,
        "max_lat": 46.66736670000000231084413826465606689453125,
        "max_lon": 142.662601700000010396252037025988101959228515625
    },
    "zone_id": "russia_sakhalin_south"
}

{
    "radius_m": 1031.09999999999990905052982270717620849609375,
    "duration_minutes": 303.1000000000000227373675443232059478759765625,
    "points": 34,
    "centroid": {
        "lat": 46.66245142058824058040045201778411865234375,
        "lon": 142.65782368529409041002509184181690216064453125
    },
    "bbox": {
        "min_lat": 46.65738830000000092468326329253613948822021484375,
        "min_lon": 142.64653670000001284279278479516506195068359375,
        "max_lat": 46.66736670000000231084413826465606689453125,
        "max_lon": 142.662601700000010396252037025988101959228515625
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 398.80000000000001136868377216160297393798828125,
    "points_in_zone": 76,
    "first_point": {
        "ts": "2026-08-25T23:50:41+00:00",
        "lat": 46.66124330000000242080204770900309085845947265625,
        "lon": 142.66027170000000978689058683812618255615234375
    },
    "last_point": {
        "ts": "2026-08-26T06:29:29+00:00",
        "lat": 46.43291500000000127101884572766721248626708984375,
        "lon": 142.9606532999999899402610026299953460693359375
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 398.80000000000001136868377216160297393798828125,
    "points_in_zone": 76,
    "first_point": {
        "ts": "2026-08-25T23:50:41+00:00",
        "lat": 46.66124330000000242080204770900309085845947265625,
        "lon": 142.66027170000000978689058683812618255615234375
    },
    "last_point": {
        "ts": "2026-08-26T06:29:29+00:00",
        "lat": 46.43291500000000127101884572766721248626708984375,
        "lon": 142.9606532999999899402610026299953460693359375
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "min_distance_m": 17.800000000000000710542735760100185871124267578125,
    "avg_distance_m": 39.10000000000000142108547152020037174224853515625,
    "distance_consistency_m": 11.5,
    "duration_minutes": 268.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 16088,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_b_avg": 0.450000000000000011102230246251565404236316680908203125,
    "speed_b_std": 0.57999999999999996003197111349436454474925994873046875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0.450000000000000011102230246251565404236316680908203125,
            "max_sog": 2
        }
    },
    "time_window": {
        "start": "2026-08-25T23:11:41+00:00",
        "end": "2026-08-26T03:39:49+00:00"
    },
    "points_count": {
        "vessel_a": 23,
        "vessel_b": 23
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 89,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 18m, avg 39m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 268 minutes"
            },
            "speed_stability": {
                "score": 14,
                "max": 20,
                "detail": "both nearly stationary; somewhat variable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b112m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and PROXIMA) maintained close proximity (min 18m, avg 39m) for 268 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "min_distance_m": 17.800000000000000710542735760100185871124267578125,
    "avg_distance_m": 39.10000000000000142108547152020037174224853515625,
    "distance_consistency_m": 11.5,
    "duration_minutes": 268.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 16088,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_b_avg": 0.450000000000000011102230246251565404236316680908203125,
    "speed_b_std": 0.57999999999999996003197111349436454474925994873046875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0.450000000000000011102230246251565404236316680908203125,
            "max_sog": 2
        }
    },
    "time_window": {
        "start": "2026-08-25T23:11:41+00:00",
        "end": "2026-08-26T03:39:49+00:00"
    },
    "points_count": {
        "vessel_a": 23,
        "vessel_b": 23
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 89,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 18m, avg 39m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 268 minutes"
            },
            "speed_stability": {
                "score": 14,
                "max": 20,
                "detail": "both nearly stationary; somewhat variable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b112m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and PROXIMA) maintained close proximity (min 18m, avg 39m) for 268 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "min_distance_m": 17.800000000000000710542735760100185871124267578125,
    "avg_distance_m": 39.10000000000000142108547152020037174224853515625,
    "distance_consistency_m": 11.199999999999999289457264239899814128875732421875,
    "duration_minutes": 304.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 18248,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_b_avg": 0.460000000000000019984014443252817727625370025634765625,
    "speed_b_std": 0.56999999999999995115018691649311222136020660400390625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0.460000000000000019984014443252817727625370025634765625,
            "max_sog": 2
        }
    },
    "time_window": {
        "start": "2026-08-25T22:35:41+00:00",
        "end": "2026-08-26T03:39:49+00:00"
    },
    "points_count": {
        "vessel_a": 24,
        "vessel_b": 24
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 89,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 18m, avg 39m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 304 minutes"
            },
            "speed_stability": {
                "score": 14,
                "max": 20,
                "detail": "both nearly stationary; somewhat variable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b111m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and PROXIMA) maintained close proximity (min 18m, avg 39m) for 304 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 46.66166489999999811288944329135119915008544921875,
            "lon": 142.66014430000001311782398261129856109619140625
        },
        "time_window": {
            "start_ts": "2026-08-25T22:35:41+00:00",
            "end_ts": "2026-08-26T03:39:49+00:00"
        },
        "searched_at": "2026-08-26T05:00:10.949334+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260825T203937_20260825T204002_004287_007E4B_2260_COG",
        "scene_datetime": "2026-08-25T20:39:37.994435Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 140.56968699999998761995811946690082550048828125,
            "min_lat": 46.11166399999999754300006316043436527252197265625,
            "max_lon": 144.29180900000000065119820646941661834716796875,
            "max_lat": 48.00600399999999723377186455763876438140869140625
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1131275_thumbnail_20260826050015.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1131275_thumbnail_20260826050015.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "min_distance_m": 17.800000000000000710542735760100185871124267578125,
    "avg_distance_m": 39.10000000000000142108547152020037174224853515625,
    "distance_consistency_m": 11.199999999999999289457264239899814128875732421875,
    "duration_minutes": 304.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 18248,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_b_avg": 0.460000000000000019984014443252817727625370025634765625,
    "speed_b_std": 0.56999999999999995115018691649311222136020660400390625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0.460000000000000019984014443252817727625370025634765625,
            "max_sog": 2
        }
    },
    "time_window": {
        "start": "2026-08-25T22:35:41+00:00",
        "end": "2026-08-26T03:39:49+00:00"
    },
    "points_count": {
        "vessel_a": 24,
        "vessel_b": 24
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 89,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 18m, avg 39m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 304 minutes"
            },
            "speed_stability": {
                "score": 14,
                "max": 20,
                "detail": "both nearly stationary; somewhat variable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b111m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and PROXIMA) maintained close proximity (min 18m, avg 39m) for 304 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 46.66166489999999811288944329135119915008544921875,
            "lon": 142.66014430000001311782398261129856109619140625
        },
        "time_window": {
            "start_ts": "2026-08-25T22:35:41+00:00",
            "end_ts": "2026-08-26T03:39:49+00:00"
        },
        "searched_at": "2026-08-26T05:00:05.623919+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260825T203937_20260825T204002_004287_007E4B_2260_COG",
        "scene_datetime": "2026-08-25T20:39:37.994435Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 140.56968699999998761995811946690082550048828125,
            "min_lat": 46.11166399999999754300006316043436527252197265625,
            "max_lon": 144.29180900000000065119820646941661834716796875,
            "max_lat": 48.00600399999999723377186455763876438140869140625
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1131274_thumbnail_20260826050009.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1131274_thumbnail_20260826050009.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "min_distance_m": 17.800000000000000710542735760100185871124267578125,
    "avg_distance_m": 39.10000000000000142108547152020037174224853515625,
    "distance_consistency_m": 11,
    "duration_minutes": 340.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 20409,
    "speed_a_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_a_std": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_b_avg": 0.450000000000000011102230246251565404236316680908203125,
    "speed_b_std": 0.5500000000000000444089209850062616169452667236328125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0.450000000000000011102230246251565404236316680908203125,
            "max_sog": 2
        }
    },
    "time_window": {
        "start": "2026-08-25T21:59:40+00:00",
        "end": "2026-08-26T03:39:49+00:00"
    },
    "points_count": {
        "vessel_a": 26,
        "vessel_b": 26
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 89,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 18m, avg 39m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 340 minutes"
            },
            "speed_stability": {
                "score": 14,
                "max": 20,
                "detail": "both nearly stationary; somewhat variable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b111m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and PROXIMA) maintained close proximity (min 18m, avg 39m) for 340 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "min_distance_m": 17.800000000000000710542735760100185871124267578125,
    "avg_distance_m": 39.10000000000000142108547152020037174224853515625,
    "distance_consistency_m": 11,
    "duration_minutes": 340.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 20409,
    "speed_a_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_a_std": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_b_avg": 0.450000000000000011102230246251565404236316680908203125,
    "speed_b_std": 0.5500000000000000444089209850062616169452667236328125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0.450000000000000011102230246251565404236316680908203125,
            "max_sog": 2
        }
    },
    "time_window": {
        "start": "2026-08-25T21:59:40+00:00",
        "end": "2026-08-26T03:39:49+00:00"
    },
    "points_count": {
        "vessel_a": 26,
        "vessel_b": 26
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 89,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 18m, avg 39m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 340 minutes"
            },
            "speed_stability": {
                "score": 14,
                "max": 20,
                "detail": "both nearly stationary; somewhat variable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b111m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and PROXIMA) maintained close proximity (min 18m, avg 39m) for 340 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "radius_m": 1045,
    "duration_minutes": 390.1000000000000227373675443232059478759765625,
    "points": 38,
    "centroid": {
        "lat": 46.66230136052632104792792233638465404510498046875,
        "lon": 142.658176321052650337151135317981243133544921875
    },
    "bbox": {
        "min_lat": 46.65738830000000092468326329253613948822021484375,
        "min_lon": 142.64653670000001284279278479516506195068359375,
        "max_lat": 46.66736670000000231084413826465606689453125,
        "max_lon": 142.662601700000010396252037025988101959228515625
    },
    "zone_id": "russia_sakhalin_south"
}

{
    "radius_m": 1045,
    "duration_minutes": 390.1000000000000227373675443232059478759765625,
    "points": 38,
    "centroid": {
        "lat": 46.66230136052632104792792233638465404510498046875,
        "lon": 142.658176321052650337151135317981243133544921875
    },
    "bbox": {
        "min_lat": 46.65738830000000092468326329253613948822021484375,
        "min_lon": 142.64653670000001284279278479516506195068359375,
        "max_lat": 46.66736670000000231084413826465606689453125,
        "max_lon": 142.662601700000010396252037025988101959228515625
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 389.6000000000000227373675443232059478759765625,
    "points_in_zone": 42,
    "first_point": {
        "ts": "2026-08-25T21:59:40+00:00",
        "lat": 46.66103170000000233130776905454695224761962890625,
        "lon": 142.66129000000000814907252788543701171875
    },
    "last_point": {
        "ts": "2026-08-26T04:29:17+00:00",
        "lat": 46.6262966999999974859747453592717647552490234375,
        "lon": 142.6373882999999977982952259480953216552734375
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 389.6000000000000227373675443232059478759765625,
    "points_in_zone": 42,
    "first_point": {
        "ts": "2026-08-25T21:59:40+00:00",
        "lat": 46.66103170000000233130776905454695224761962890625,
        "lon": 142.66129000000000814907252788543701171875
    },
    "last_point": {
        "ts": "2026-08-26T04:29:17+00:00",
        "lat": 46.6262966999999974859747453592717647552490234375,
        "lon": 142.6373882999999977982952259480953216552734375
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "min_distance_m": 20.300000000000000710542735760100185871124267578125,
    "avg_distance_m": 50.60000000000000142108547152020037174224853515625,
    "distance_consistency_m": 38.7000000000000028421709430404007434844970703125,
    "duration_minutes": 363.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 21827,
    "speed_a_avg": 0.13000000000000000444089209850062616169452667236328125,
    "speed_a_std": 0.2099999999999999922284388276239042170345783233642578125,
    "speed_b_avg": 0.520000000000000017763568394002504646778106689453125,
    "speed_b_std": 0.5100000000000000088817841970012523233890533447265625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.13000000000000000444089209850062616169452667236328125,
            "max_sog": 0.90000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0.520000000000000017763568394002504646778106689453125,
            "max_sog": 2
        }
    },
    "time_window": {
        "start": "2026-08-25T20:55:56+00:00",
        "end": "2026-08-26T02:59:43+00:00"
    },
    "points_count": {
        "vessel_a": 33,
        "vessel_b": 33
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 84,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 20m, avg 51m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 364 minutes"
            },
            "speed_stability": {
                "score": 12,
                "max": 20,
                "detail": "both very slow; somewhat variable 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 (OMSK and PROXIMA) maintained close proximity (min 20m, avg 51m) for 364 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "min_distance_m": 20.300000000000000710542735760100185871124267578125,
    "avg_distance_m": 50.60000000000000142108547152020037174224853515625,
    "distance_consistency_m": 38.7000000000000028421709430404007434844970703125,
    "duration_minutes": 363.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 21827,
    "speed_a_avg": 0.13000000000000000444089209850062616169452667236328125,
    "speed_a_std": 0.2099999999999999922284388276239042170345783233642578125,
    "speed_b_avg": 0.520000000000000017763568394002504646778106689453125,
    "speed_b_std": 0.5100000000000000088817841970012523233890533447265625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.13000000000000000444089209850062616169452667236328125,
            "max_sog": 0.90000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0.520000000000000017763568394002504646778106689453125,
            "max_sog": 2
        }
    },
    "time_window": {
        "start": "2026-08-25T20:55:56+00:00",
        "end": "2026-08-26T02:59:43+00:00"
    },
    "points_count": {
        "vessel_a": 33,
        "vessel_b": 33
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 84,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 20m, avg 51m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 364 minutes"
            },
            "speed_stability": {
                "score": 12,
                "max": 20,
                "detail": "both very slow; somewhat variable 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 (OMSK and PROXIMA) maintained close proximity (min 20m, avg 51m) for 364 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "radius_m": 1132.59999999999990905052982270717620849609375,
    "duration_minutes": 398.1000000000000227373675443232059478759765625,
    "points": 36,
    "centroid": {
        "lat": 46.660689308333331837275181896984577178955078125,
        "lon": 142.6605435666666608085506595671176910400390625
    },
    "bbox": {
        "min_lat": 46.65053329999999931487764115445315837860107421875,
        "min_lon": 142.659345000000001846274244599044322967529296875,
        "max_lat": 46.66259670000000170375642483122646808624267578125,
        "max_lon": 142.661554999999992787707014940679073333740234375
    },
    "zone_id": "russia_sakhalin_south"
}

{
    "radius_m": 1132.59999999999990905052982270717620849609375,
    "duration_minutes": 398.1000000000000227373675443232059478759765625,
    "points": 36,
    "centroid": {
        "lat": 46.660689308333331837275181896984577178955078125,
        "lon": 142.6605435666666608085506595671176910400390625
    },
    "bbox": {
        "min_lat": 46.65053329999999931487764115445315837860107421875,
        "min_lon": 142.659345000000001846274244599044322967529296875,
        "max_lat": 46.66259670000000170375642483122646808624267578125,
        "max_lon": 142.661554999999992787707014940679073333740234375
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 398.1000000000000227373675443232059478759765625,
    "points_in_zone": 36,
    "first_point": {
        "ts": "2026-08-25T20:21:36+00:00",
        "lat": 46.65053329999999931487764115445315837860107421875,
        "lon": 142.6593583000000080573954619467258453369140625
    },
    "last_point": {
        "ts": "2026-08-26T02:59:43+00:00",
        "lat": 46.6610917000000000598447513766586780548095703125,
        "lon": 142.66095169999999825449776835739612579345703125
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 398.1000000000000227373675443232059478759765625,
    "points_in_zone": 36,
    "first_point": {
        "ts": "2026-08-25T20:21:36+00:00",
        "lat": 46.65053329999999931487764115445315837860107421875,
        "lon": 142.6593583000000080573954619467258453369140625
    },
    "last_point": {
        "ts": "2026-08-26T02:59:43+00:00",
        "lat": 46.6610917000000000598447513766586780548095703125,
        "lon": 142.66095169999999825449776835739612579345703125
    }
}