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            "duration": {
                "score": 15,
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            "start_ts": "2026-09-08T07:03:46+00:00",
            "end_ts": "2026-09-08T08:09:46+00:00"
        },
        "searched_at": "2026-09-08T13:45:06.784513+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273378580,
        "imo": 9142916,
        "name": "OKEAN",
        "flag": "RUSSIA"
    },
    "min_distance_m": 5.5,
    "avg_distance_m": 9.5,
    "distance_consistency_m": 2.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 66,
    "overlap_duration_s": 3960,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-08T07:03:46+00:00",
        "end": "2026-09-08T08:09:46+00:00"
    },
    "points_count": {
        "vessel_a": 19,
        "vessel_b": 19
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 6m, avg 10m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 66 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and OKEAN) maintained close proximity (min 6m, avg 10m) for 66 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.651433400000001938678906299173831939697265625,
            "lon": 142.646031099999987645787768997251987457275390625
        },
        "time_window": {
            "start_ts": "2026-09-08T07:03:46+00:00",
            "end_ts": "2026-09-08T08:09:46+00:00"
        },
        "searched_at": "2026-09-08T13:45:09.201526+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 394.6000000000000227373675443232059478759765625,
    "points_in_zone": 103,
    "first_point": {
        "ts": "2026-09-08T07:23:03+00:00",
        "lat": 46.651448299999998425846570171415805816650390625,
        "lon": 142.646018300000008593997335992753505706787109375
    },
    "last_point": {
        "ts": "2026-09-08T13:57:39+00:00",
        "lat": 46.652528300000000172076397575438022613525390625,
        "lon": 142.664361700000000610089045949280261993408203125
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 394.6000000000000227373675443232059478759765625,
    "points_in_zone": 103,
    "first_point": {
        "ts": "2026-09-08T07:23:03+00:00",
        "lat": 46.651448299999998425846570171415805816650390625,
        "lon": 142.646018300000008593997335992753505706787109375
    },
    "last_point": {
        "ts": "2026-09-08T13:57:39+00:00",
        "lat": 46.652528300000000172076397575438022613525390625,
        "lon": 142.664361700000000610089045949280261993408203125
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273378580,
        "imo": 9142916,
        "name": "OKEAN",
        "flag": "RUSSIA"
    },
    "min_distance_m": 4.9000000000000003552713678800500929355621337890625,
    "avg_distance_m": 8.9000000000000003552713678800500929355621337890625,
    "distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 126,
    "overlap_duration_s": 7561,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-08T06:03:45+00:00",
        "end": "2026-09-08T08:09:46+00:00"
    },
    "points_count": {
        "vessel_a": 37,
        "vessel_b": 37
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 5m, avg 9m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 126 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and OKEAN) maintained close proximity (min 5m, avg 9m) for 126 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.65144409999999908222889644093811511993408203125,
            "lon": 142.64605960000000095533323474228382110595703125
        },
        "time_window": {
            "start_ts": "2026-09-08T06:03:45+00:00",
            "end_ts": "2026-09-08T08:09:46+00:00"
        },
        "searched_at": "2026-09-08T12:45:06.818386+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273378580,
        "imo": 9142916,
        "name": "OKEAN",
        "flag": "RUSSIA"
    },
    "min_distance_m": 4.9000000000000003552713678800500929355621337890625,
    "avg_distance_m": 8.9000000000000003552713678800500929355621337890625,
    "distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 126,
    "overlap_duration_s": 7561,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-08T06:03:45+00:00",
        "end": "2026-09-08T08:09:46+00:00"
    },
    "points_count": {
        "vessel_a": 37,
        "vessel_b": 37
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 5m, avg 9m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 126 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and OKEAN) maintained close proximity (min 5m, avg 9m) for 126 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.65144409999999908222889644093811511993408203125,
            "lon": 142.64605960000000095533323474228382110595703125
        },
        "time_window": {
            "start_ts": "2026-09-08T06:03:45+00:00",
            "end_ts": "2026-09-08T08:09:46+00:00"
        },
        "searched_at": "2026-09-08T12:45:09.205531+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 397.19999999999998863131622783839702606201171875,
    "points_in_zone": 101,
    "first_point": {
        "ts": "2026-09-08T06:50:44+00:00",
        "lat": 46.6514499999999969759301166050136089324951171875,
        "lon": 142.645929999999992787707014940679073333740234375
    },
    "last_point": {
        "ts": "2026-09-08T13:27:54+00:00",
        "lat": 46.65261170000000134905349113978445529937744140625,
        "lon": 142.664271700000000464569893665611743927001953125
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 397.19999999999998863131622783839702606201171875,
    "points_in_zone": 101,
    "first_point": {
        "ts": "2026-09-08T06:50:44+00:00",
        "lat": 46.6514499999999969759301166050136089324951171875,
        "lon": 142.645929999999992787707014940679073333740234375
    },
    "last_point": {
        "ts": "2026-09-08T13:27:54+00:00",
        "lat": 46.65261170000000134905349113978445529937744140625,
        "lon": 142.664271700000000464569893665611743927001953125
    }
}

{
    "radius_m": 1166.59999999999990905052982270717620849609375,
    "duration_minutes": 124.900000000000005684341886080801486968994140625,
    "points": 39,
    "centroid": {
        "lat": 46.65170362564102646274477592669427394866943359375,
        "lon": 142.647100092307681507008965127170085906982421875
    },
    "bbox": {
        "min_lat": 46.64928499999999900182956480421125888824462890625,
        "min_lon": 142.645728300000001809166860766708850860595703125,
        "max_lat": 46.65635670000000345680746249854564666748046875,
        "max_lon": 142.660760000000010450094123370945453643798828125
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "radius_m": 1166.59999999999990905052982270717620849609375,
    "duration_minutes": 124.900000000000005684341886080801486968994140625,
    "points": 39,
    "centroid": {
        "lat": 46.65170362564102646274477592669427394866943359375,
        "lon": 142.647100092307681507008965127170085906982421875
    },
    "bbox": {
        "min_lat": 46.64928499999999900182956480421125888824462890625,
        "min_lon": 142.645728300000001809166860766708850860595703125,
        "max_lat": 46.65635670000000345680746249854564666748046875,
        "max_lon": 142.660760000000010450094123370945453643798828125
    },
    "zone_id": "russia_sakhalin_south"
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273378580,
        "imo": 9142916,
        "name": "OKEAN",
        "flag": "RUSSIA"
    },
    "min_distance_m": 4.9000000000000003552713678800500929355621337890625,
    "avg_distance_m": 9.300000000000000710542735760100185871124267578125,
    "distance_consistency_m": 1.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 186,
    "overlap_duration_s": 11161,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-08T05:03:45+00:00",
        "end": "2026-09-08T08:09:46+00:00"
    },
    "points_count": {
        "vessel_a": 52,
        "vessel_b": 52
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 5m, avg 9m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 186 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and OKEAN) maintained close proximity (min 5m, avg 9m) for 186 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.65143470000000291975084110163152217864990234375,
            "lon": 142.646060199999993756136973388493061065673828125
        },
        "time_window": {
            "start_ts": "2026-09-08T05:03:45+00:00",
            "end_ts": "2026-09-08T08:09:46+00:00"
        },
        "searched_at": "2026-09-08T11:45:15.341547+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273378580,
        "imo": 9142916,
        "name": "OKEAN",
        "flag": "RUSSIA"
    },
    "min_distance_m": 4.9000000000000003552713678800500929355621337890625,
    "avg_distance_m": 9.300000000000000710542735760100185871124267578125,
    "distance_consistency_m": 1.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 186,
    "overlap_duration_s": 11161,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-08T05:03:45+00:00",
        "end": "2026-09-08T08:09:46+00:00"
    },
    "points_count": {
        "vessel_a": 52,
        "vessel_b": 52
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 5m, avg 9m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 186 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and OKEAN) maintained close proximity (min 5m, avg 9m) for 186 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.65143470000000291975084110163152217864990234375,
            "lon": 142.646060199999993756136973388493061065673828125
        },
        "time_window": {
            "start_ts": "2026-09-08T05:03:45+00:00",
            "end_ts": "2026-09-08T08:09:46+00:00"
        },
        "searched_at": "2026-09-08T11:45:19.046225+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 397.19999999999998863131622783839702606201171875,
    "points_in_zone": 103,
    "first_point": {
        "ts": "2026-09-08T05:51:13+00:00",
        "lat": 46.6514533000000000129148247651755809783935546875,
        "lon": 142.646015000000005557012627832591533660888671875
    },
    "last_point": {
        "ts": "2026-09-08T12:28:25+00:00",
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{
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{
    "radius_m": 1011.200000000000045474735088646411895751953125,
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{
    "radius_m": 1011.200000000000045474735088646411895751953125,
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}

{
    "vessel_a": {
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        "flag": "Russia"
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        "imo": 9142916,
        "name": "OKEAN",
        "flag": "RUSSIA"
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    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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    },
    "time_window": {
        "start": "2026-09-08T04:03:45+00:00",
        "end": "2026-09-08T08:09:46+00:00"
    },
    "points_count": {
        "vessel_a": 68,
        "vessel_b": 68
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 5m, avg 9m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 246 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and OKEAN) maintained close proximity (min 5m, avg 9m) for 246 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
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            "start_ts": "2026-09-08T04:03:45+00:00",
            "end_ts": "2026-09-08T08:09:46+00:00"
        },
        "searched_at": "2026-09-08T10:45:12.021553+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
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        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273378580,
        "imo": 9142916,
        "name": "OKEAN",
        "flag": "RUSSIA"
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    "duration_minutes": 246,
    "overlap_duration_s": 14761,
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    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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    },
    "time_window": {
        "start": "2026-09-08T04:03:45+00:00",
        "end": "2026-09-08T08:09:46+00:00"
    },
    "points_count": {
        "vessel_a": 68,
        "vessel_b": 68
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    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 5m, avg 9m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 246 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and OKEAN) maintained close proximity (min 5m, avg 9m) for 246 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
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        "time_window": {
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            "end_ts": "2026-09-08T08:09:46+00:00"
        },
        "searched_at": "2026-09-08T11:00:01.691741+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "russia_prigorodnoye",
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    "first_point": {
        "ts": "2026-09-08T04:51:44+00:00",
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}

{
    "zone_id": "russia_sakhalin_south",
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    "points_in_zone": 110,
    "first_point": {
        "ts": "2026-09-08T04:51:44+00:00",
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{
    "radius_m": 1026.799999999999954525264911353588104248046875,
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{
    "radius_m": 1026.799999999999954525264911353588104248046875,
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}

{
    "zone_id": "russia_prigorodnoye",
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{
    "zone_id": "russia_sakhalin_south",
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{
    "radius_m": 1038.5,
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{
    "radius_m": 1038.5,
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    "zone_id": "russia_sakhalin_south"
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273378580,
        "imo": 9142916,
        "name": "OKEAN",
        "flag": "RUSSIA"
    },
    "min_distance_m": 4.9000000000000003552713678800500929355621337890625,
    "avg_distance_m": 9.0999999999999996447286321199499070644378662109375,
    "distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 309,
    "overlap_duration_s": 18542,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-08T03:00:44+00:00",
        "end": "2026-09-08T08:09:46+00:00"
    },
    "points_count": {
        "vessel_a": 87,
        "vessel_b": 87
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 5m, avg 9m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 309 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and OKEAN) maintained close proximity (min 5m, avg 9m) for 309 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
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            "lon": 142.64591569999998910134308971464633941650390625
        },
        "time_window": {
            "start_ts": "2026-09-08T03:00:44+00:00",
            "end_ts": "2026-09-08T08:09:46+00:00"
        },
        "searched_at": "2026-09-08T09:45:01.608617+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273378580,
        "imo": 9142916,
        "name": "OKEAN",
        "flag": "RUSSIA"
    },
    "min_distance_m": 4.9000000000000003552713678800500929355621337890625,
    "avg_distance_m": 9.0999999999999996447286321199499070644378662109375,
    "distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 309,
    "overlap_duration_s": 18542,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-08T03:00:44+00:00",
        "end": "2026-09-08T08:09:46+00:00"
    },
    "points_count": {
        "vessel_a": 87,
        "vessel_b": 87
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 5m, avg 9m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 309 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and OKEAN) maintained close proximity (min 5m, avg 9m) for 309 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
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            "lon": 142.64591569999998910134308971464633941650390625
        },
        "time_window": {
            "start_ts": "2026-09-08T03:00:44+00:00",
            "end_ts": "2026-09-08T08:09:46+00:00"
        },
        "searched_at": "2026-09-08T09:45:04.108829+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273378580,
        "imo": 9142916,
        "name": "OKEAN",
        "flag": "RUSSIA"
    },
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    "avg_distance_m": 9.0999999999999996447286321199499070644378662109375,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 345,
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    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
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    "speed_summary": {
        "vessel_a": {
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    },
    "time_window": {
        "start": "2026-09-08T02:24:44+00:00",
        "end": "2026-09-08T08:09:46+00:00"
    },
    "points_count": {
        "vessel_a": 96,
        "vessel_b": 96
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 5m, avg 9m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 345 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and OKEAN) maintained close proximity (min 5m, avg 9m) for 345 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273371330,
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        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273378580,
        "imo": 9142916,
        "name": "OKEAN",
        "flag": "RUSSIA"
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    "speed_summary": {
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    "time_window": {
        "start": "2026-09-08T02:24:44+00:00",
        "end": "2026-09-08T08:09:46+00:00"
    },
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        "vessel_a": 96,
        "vessel_b": 96
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    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 5m, avg 9m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 345 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
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}

{
    "zone_id": "russia_prigorodnoye",
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        "lat": 46.654463300000003300738171674311161041259765625,
        "lon": 142.663424999999989495336194522678852081298828125
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}

{
    "zone_id": "russia_sakhalin_south",
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    "radius_m": 1044.59999999999990905052982270717620849609375,
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}

{
    "vessel_a": {
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        "name": "OMSK",
        "flag": "Russia"
    },
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        "imo": 9142916,
        "name": "OKEAN",
        "flag": "RUSSIA"
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    "speed_summary": {
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    },
    "time_window": {
        "start": "2026-09-08T01:36:43+00:00",
        "end": "2026-09-08T08:09:46+00:00"
    },
    "points_count": {
        "vessel_a": 108,
        "vessel_b": 108
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 5m, avg 9m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 393 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and OKEAN) maintained close proximity (min 5m, avg 9m) for 393 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "vessel_a": {
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    },
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    "speed_summary": {
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    },
    "time_window": {
        "start": "2026-09-08T01:36:43+00:00",
        "end": "2026-09-08T08:09:46+00:00"
    },
    "points_count": {
        "vessel_a": 108,
        "vessel_b": 108
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
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                "score": 25,
                "max": 25,
                "detail": "Min distance 5m, avg 9m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 393 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and OKEAN) maintained close proximity (min 5m, avg 9m) for 393 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "zone_id": "russia_prigorodnoye",
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    "points_in_zone": 128,
    "first_point": {
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}

{
    "zone_id": "russia_sakhalin_south",
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    "radius_m": 1045.90000000000009094947017729282379150390625,
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{
    "radius_m": 1045.90000000000009094947017729282379150390625,
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    "points": 128,
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{
    "vessel_a": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
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        "imo": 9142916,
        "name": "OKEAN",
        "flag": "RUSSIA"
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    },
    "time_window": {
        "start": "2026-09-08T00:54:43+00:00",
        "end": "2026-09-08T07:27:46+00:00"
    },
    "points_count": {
        "vessel_a": 110,
        "vessel_b": 110
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 5m, avg 9m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 393 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (OMSK and OKEAN) maintained close proximity (min 5m, avg 9m) for 393 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "vessel_a": {
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    "time_window": {
        "start": "2026-09-08T00:54:43+00:00",
        "end": "2026-09-08T07:27:46+00:00"
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                "max": 25,
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