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{
    "radius_m": 933.700000000000045474735088646411895751953125,
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    "radius_m": 933.700000000000045474735088646411895751953125,
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        "imo": 9142916,
        "name": "OKEAN",
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        "vessel_a": {
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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    },
    "time_window": {
        "start": "2026-06-21T05:11:58+00:00",
        "end": "2026-06-21T07:23:40+00:00"
    },
    "points_count": {
        "vessel_a": 38,
        "vessel_b": 38
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    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 19m, avg 25m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 132 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 (AZOV and OKEAN) maintained close proximity (min 19m, avg 25m) for 132 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": {
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            "end_ts": "2026-06-21T07:23:40+00:00"
        },
        "searched_at": "2026-06-21T11:45:01.530374+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
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        "mmsi": 273378580,
        "imo": 9142916,
        "name": "OKEAN",
        "flag": "RUSSIA"
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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    "time_window": {
        "start": "2026-06-21T05:11:58+00:00",
        "end": "2026-06-21T07:23:40+00:00"
    },
    "points_count": {
        "vessel_a": 38,
        "vessel_b": 38
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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 19m, avg 25m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 132 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 (AZOV and OKEAN) maintained close proximity (min 19m, avg 25m) for 132 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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            "end_ts": "2026-06-21T07:23:40+00:00"
        },
        "searched_at": "2026-06-21T11:45:07.148199+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "russia_prigorodnoye",
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{
    "zone_id": "russia_sakhalin_south",
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    "first_point": {
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{
    "radius_m": 970.299999999999954525264911353588104248046875,
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{
    "radius_m": 970.299999999999954525264911353588104248046875,
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{
    "zone_id": "russia_sakhalin_south",
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{
    "zone_id": "russia_prigorodnoye",
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{
    "radius_m": 1001,
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{
    "radius_m": 1001,
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}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273378580,
        "imo": 9142916,
        "name": "OKEAN",
        "flag": "RUSSIA"
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    "min_distance_m": 18.699999999999999289457264239899814128875732421875,
    "avg_distance_m": 24.800000000000000710542735760100185871124267578125,
    "distance_consistency_m": 2.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 202.69999999999998863131622783839702606201171875,
    "overlap_duration_s": 12163,
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    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
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            "max_sog": 0.200000000000000011102230246251565404236316680908203125
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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    },
    "time_window": {
        "start": "2026-06-21T04:00:57+00:00",
        "end": "2026-06-21T07:23:40+00:00"
    },
    "points_count": {
        "vessel_a": 61,
        "vessel_b": 61
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 19m, avg 25m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 203 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and OKEAN) maintained close proximity (min 19m, avg 25m) for 203 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": 142.6480612999999948442564345896244049072265625
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        "time_window": {
            "start_ts": "2026-06-21T04:00:57+00:00",
            "end_ts": "2026-06-21T07:23:40+00:00"
        },
        "searched_at": "2026-06-21T10:45:01.637655+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
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        "mmsi": 273378580,
        "imo": 9142916,
        "name": "OKEAN",
        "flag": "RUSSIA"
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    "avg_distance_m": 24.800000000000000710542735760100185871124267578125,
    "distance_consistency_m": 2.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 202.69999999999998863131622783839702606201171875,
    "overlap_duration_s": 12163,
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    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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    },
    "time_window": {
        "start": "2026-06-21T04:00:57+00:00",
        "end": "2026-06-21T07:23:40+00:00"
    },
    "points_count": {
        "vessel_a": 61,
        "vessel_b": 61
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 19m, avg 25m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 203 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and OKEAN) maintained close proximity (min 19m, avg 25m) for 203 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": 142.6480612999999948442564345896244049072265625
        },
        "time_window": {
            "start_ts": "2026-06-21T04:00:57+00:00",
            "end_ts": "2026-06-21T07:23:40+00:00"
        },
        "searched_at": "2026-06-21T10:45:04.095867+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273378580,
        "imo": 9142916,
        "name": "OKEAN",
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        "value": 95,
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                "max": 25,
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            },
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                "max": 25,
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            },
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