PROXIMA

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{
    "radius_m": 91.900000000000005684341886080801486968994140625,
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    "zone_id": "russia_prigorodnoye"
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{
    "zone_id": "russia_sakhalin_south",
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    "points_in_zone": 81,
    "first_point": {
        "ts": "2026-09-10T05:02:43+00:00",
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}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
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        "lat": 46.66400329999999740948624094016849994659423828125,
        "lon": 142.663309999999995625330484472215175628662109375
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}

{
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        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
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    "overlap_duration_s": 4301,
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    "speed_summary": {
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    },
    "time_window": {
        "start": "2026-09-10T05:00:07+00:00",
        "end": "2026-09-10T06:11:48+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 36m, avg 40m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 72 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "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 36m, avg 40m) for 72 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": {
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        "time_window": {
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            "end_ts": "2026-09-10T06:11:48+00:00"
        },
        "searched_at": "2026-09-10T11:30:05.136325+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
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        "name": "PROXIMA",
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    "speed_summary": {
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    },
    "time_window": {
        "start": "2026-09-10T05:00:07+00:00",
        "end": "2026-09-10T06:11:48+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 36m, avg 40m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 72 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "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 36m, avg 40m) for 72 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": "2026-09-10T06:11:48+00:00"
        },
        "searched_at": "2026-09-10T11:30:02.169095+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
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{
    "radius_m": 96,
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{
    "zone_id": "russia_prigorodnoye",
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{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
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}

{
    "vessel_a": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "min_distance_m": 30.699999999999999289457264239899814128875732421875,
    "avg_distance_m": 38.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 3.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 138,
    "overlap_duration_s": 8278,
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    "speed_summary": {
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    },
    "time_window": {
        "start": "2026-09-10T04:02:45+00:00",
        "end": "2026-09-10T06:20:43+00:00"
    },
    "points_count": {
        "vessel_a": 28,
        "vessel_b": 28
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 31m, avg 39m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 138 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (PROXIMA and OMSK) maintained close proximity (min 31m, avg 39m) for 138 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",
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            "lon": 142.66420729999998684434103779494762420654296875
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        "time_window": {
            "start_ts": "2026-09-10T04:02:45+00:00",
            "end_ts": "2026-09-10T06:20:43+00:00"
        },
        "searched_at": "2026-09-10T10:45:04.369540+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "min_distance_m": 30.699999999999999289457264239899814128875732421875,
    "avg_distance_m": 38.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 3.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 138,
    "overlap_duration_s": 8278,
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    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
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    "speed_summary": {
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    },
    "time_window": {
        "start": "2026-09-10T04:02:45+00:00",
        "end": "2026-09-10T06:20:43+00:00"
    },
    "points_count": {
        "vessel_a": 28,
        "vessel_b": 28
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 31m, avg 39m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 138 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (PROXIMA and OMSK) maintained close proximity (min 31m, avg 39m) for 138 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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        "time_window": {
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            "end_ts": "2026-09-10T06:20:43+00:00"
        },
        "searched_at": "2026-09-10T10:45:01.392180+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
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        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
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    "duration_minutes": 153.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 9183,
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    "speed_summary": {
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    "time_window": {
        "start": "2026-09-10T03:47:40+00:00",
        "end": "2026-09-10T06:20:43+00:00"
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    "points_count": {
        "vessel_a": 30,
        "vessel_b": 30
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 31m, avg 39m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 153 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (PROXIMA and OMSK) maintained close proximity (min 31m, avg 39m) for 153 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."
    }
}

{
    "vessel_a": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
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    "avg_distance_m": 39,
    "distance_consistency_m": 3.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 153.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 9183,
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    },
    "time_window": {
        "start": "2026-09-10T03:47:40+00:00",
        "end": "2026-09-10T06:20:43+00:00"
    },
    "points_count": {
        "vessel_a": 30,
        "vessel_b": 30
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 31m, avg 39m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 153 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (PROXIMA and OMSK) maintained close proximity (min 31m, avg 39m) for 153 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."
    }
}

{
    "radius_m": 112.7000000000000028421709430404007434844970703125,
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}

{
    "radius_m": 112.7000000000000028421709430404007434844970703125,
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{
    "zone_id": "russia_prigorodnoye",
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    "points_in_zone": 76,
    "first_point": {
        "ts": "2026-09-10T03:50:44+00:00",
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{
    "zone_id": "russia_sakhalin_south",
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    "points_in_zone": 76,
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        "ts": "2026-09-10T03:50:44+00:00",
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}

{
    "vessel_a": {
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        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "min_distance_m": 30.699999999999999289457264239899814128875732421875,
    "avg_distance_m": 39,
    "distance_consistency_m": 3.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 249.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 14944,
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    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
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    "speed_summary": {
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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        "vessel_b": {
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    },
    "time_window": {
        "start": "2026-09-10T02:11:39+00:00",
        "end": "2026-09-10T06:20:43+00:00"
    },
    "points_count": {
        "vessel_a": 44,
        "vessel_b": 44
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 31m, avg 39m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 249 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 (PROXIMA and OMSK) maintained close proximity (min 31m, avg 39m) for 249 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": {
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            "start_ts": "2026-09-10T02:11:39+00:00",
            "end_ts": "2026-09-10T06:20:43+00:00"
        },
        "searched_at": "2026-09-10T09:00:01.652286+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
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        "name": "OMSK",
        "flag": "Russia"
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    "speed_summary": {
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    "time_window": {
        "start": "2026-09-10T02:11:39+00:00",
        "end": "2026-09-10T06:20:43+00:00"
    },
    "points_count": {
        "vessel_a": 44,
        "vessel_b": 44
    },
    "zone_id": "russia_prigorodnoye",
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    "score": {
        "value": 95,
        "components": {
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                "score": 25,
                "max": 25,
                "detail": "Min distance 31m, avg 39m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 249 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 (PROXIMA and OMSK) maintained close proximity (min 31m, avg 39m) for 249 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."
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            "end_ts": "2026-09-10T06:20:43+00:00"
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        "searched_at": "2026-09-10T08:45:14.919606+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
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}

{
    "radius_m": 124.599999999999994315658113919198513031005859375,
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{
    "zone_id": "russia_prigorodnoye",
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{
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{
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{
    "zone_id": "russia_prigorodnoye",
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    "dwell_minutes": 390,
    "points_in_zone": 74,
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{
    "vessel_a": {
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        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "min_distance_m": 30.699999999999999289457264239899814128875732421875,
    "avg_distance_m": 39.2999999999999971578290569595992565155029296875,
    "distance_consistency_m": 3.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 285,
    "overlap_duration_s": 17099,
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    "speed_summary": {
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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    },
    "time_window": {
        "start": "2026-09-10T01:35:44+00:00",
        "end": "2026-09-10T06:20:43+00:00"
    },
    "points_count": {
        "vessel_a": 51,
        "vessel_b": 51
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 31m, avg 39m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 285 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 (PROXIMA and OMSK) maintained close proximity (min 31m, avg 39m) for 285 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."
    }
}

{
    "vessel_a": {
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        "imo": 9329655,
        "name": "PROXIMA",
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    "overlap_duration_s": 17099,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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    },
    "time_window": {
        "start": "2026-09-10T01:35:44+00:00",
        "end": "2026-09-10T06:20:43+00:00"
    },
    "points_count": {
        "vessel_a": 51,
        "vessel_b": 51
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 31m, avg 39m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 285 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 (PROXIMA and OMSK) maintained close proximity (min 31m, avg 39m) for 285 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": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "min_distance_m": 30.699999999999999289457264239899814128875732421875,
    "avg_distance_m": 39.10000000000000142108547152020037174224853515625,
    "distance_consistency_m": 3.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 369,
    "overlap_duration_s": 22141,
    "speed_a_avg": 0,
    "speed_a_std": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-10T00:11:42+00:00",
        "end": "2026-09-10T06:20:43+00:00"
    },
    "points_count": {
        "vessel_a": 62,
        "vessel_b": 62
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 31m, avg 39m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 369 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \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 (PROXIMA and OMSK) maintained close proximity (min 31m, avg 39m) for 369 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": 46.66270229999999941128407954238355159759521484375,
            "lon": 142.664269899999993640449247322976589202880859375
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        "time_window": {
            "start_ts": "2026-09-10T00:11:42+00:00",
            "end_ts": "2026-09-10T06:20:43+00:00"
        },
        "searched_at": "2026-09-10T07:00:02.181076+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
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    "duration_minutes": 369,
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    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
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    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
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    },
    "time_window": {
        "start": "2026-09-10T00:11:42+00:00",
        "end": "2026-09-10T06:20:43+00:00"
    },
    "points_count": {
        "vessel_a": 62,
        "vessel_b": 62
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 31m, avg 39m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 369 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \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 (PROXIMA and OMSK) maintained close proximity (min 31m, avg 39m) for 369 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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        "time_window": {
            "start_ts": "2026-09-10T00:11:42+00:00",
            "end_ts": "2026-09-10T06:20:43+00:00"
        },
        "searched_at": "2026-09-10T06:45:12.235452+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "radius_m": 46,
    "duration_minutes": 399,
    "points": 65,
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{
    "radius_m": 46,
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}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 399,
    "points_in_zone": 65,
    "first_point": {
        "ts": "2026-09-10T00:50:45+00:00",
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}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 399,
    "points_in_zone": 65,
    "first_point": {
        "ts": "2026-09-10T00:50:45+00:00",
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        "lat": 46.66298669999999759738784632645547389984130859375,
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}

{
    "vessel_a": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "min_distance_m": 30.699999999999999289457264239899814128875732421875,
    "avg_distance_m": 39,
    "distance_consistency_m": 3.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 381,
    "overlap_duration_s": 22860,
    "speed_a_avg": 0,
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    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
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    "speed_summary": {
        "vessel_a": {
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    },
    "time_window": {
        "start": "2026-09-09T23:59:43+00:00",
        "end": "2026-09-10T06:20:43+00:00"
    },
    "points_count": {
        "vessel_a": 66,
        "vessel_b": 66
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 31m, avg 39m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 381 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 (PROXIMA and OMSK) maintained close proximity (min 31m, avg 39m) for 381 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."
    }
}

{
    "vessel_a": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
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    "time_window": {
        "start": "2026-09-09T23:59:43+00:00",
        "end": "2026-09-10T06:20:43+00:00"
    },
    "points_count": {
        "vessel_a": 66,
        "vessel_b": 66
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 31m, avg 39m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 381 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 (PROXIMA and OMSK) maintained close proximity (min 31m, avg 39m) for 381 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."
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}

{
    "radius_m": 38.89999999999999857891452847979962825775146484375,
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{
    "radius_m": 38.89999999999999857891452847979962825775146484375,
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{
    "zone_id": "russia_prigorodnoye",
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}

{
    "zone_id": "russia_sakhalin_south",
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    "first_point": {
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{
    "vessel_a": {
        "mmsi": 273264690,
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    },
    "vessel_b": {
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        "name": "OMSK",
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    },
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    "score": {
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                "max": 25,
                "detail": "Min distance 32m, avg 40m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 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,
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                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (PROXIMA and OMSK) maintained close proximity (min 32m, avg 40m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "min_distance_m": 31.5,
    "avg_distance_m": 39.7000000000000028421709430404007434844970703125,
    "distance_consistency_m": 3,
    "duration_minutes": 387.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 23224,
    "speed_a_avg": 0,
    "speed_a_std": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-09T22:59:41+00:00",
        "end": "2026-09-10T05:26:45+00:00"
    },
    "points_count": {
        "vessel_a": 64,
        "vessel_b": 64
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 32m, avg 40m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 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 (PROXIMA and OMSK) maintained close proximity (min 32m, avg 40m) for 387 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}

{
    "radius_m": 64,
    "duration_minutes": 390,
    "points": 65,
    "centroid": {
        "lat": 46.66255749076920977813642821274697780609130859375,
        "lon": 142.66437369384613020883989520370960235595703125
    },
    "bbox": {
        "min_lat": 46.66224170000000270874807029031217098236083984375,
        "min_lon": 142.664141699999987622504704631865024566650390625,
        "max_lat": 46.66311170000000174695742316544055938720703125,
        "max_lon": 142.664448300000003655441105365753173828125
    },
    "zone_id": "russia_sakhalin_south"
}

{
    "radius_m": 64,
    "duration_minutes": 390,
    "points": 65,
    "centroid": {
        "lat": 46.66255749076920977813642821274697780609130859375,
        "lon": 142.66437369384613020883989520370960235595703125
    },
    "bbox": {
        "min_lat": 46.66224170000000270874807029031217098236083984375,
        "min_lon": 142.664141699999987622504704631865024566650390625,
        "max_lat": 46.66311170000000174695742316544055938720703125,
        "max_lon": 142.664448300000003655441105365753173828125
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 390,
    "points_in_zone": 65,
    "first_point": {
        "ts": "2026-09-09T22:56:46+00:00",
        "lat": 46.663105000000001609805622138082981109619140625,
        "lon": 142.664141699999987622504704631865024566650390625
    },
    "last_point": {
        "ts": "2026-09-10T05:26:45+00:00",
        "lat": 46.66259170000000011668817023746669292449951171875,
        "lon": 142.66433000000000674845068715512752532958984375
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 390,
    "points_in_zone": 65,
    "first_point": {
        "ts": "2026-09-09T22:56:46+00:00",
        "lat": 46.663105000000001609805622138082981109619140625,
        "lon": 142.664141699999987622504704631865024566650390625
    },
    "last_point": {
        "ts": "2026-09-10T05:26:45+00:00",
        "lat": 46.66259170000000011668817023746669292449951171875,
        "lon": 142.66433000000000674845068715512752532958984375
    }
}

{
    "vessel_a": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "min_distance_m": 31.5,
    "avg_distance_m": 52,
    "distance_consistency_m": 63.5,
    "duration_minutes": 381,
    "overlap_duration_s": 22859,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0.179999999999999993338661852249060757458209991455078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 1.3000000000000000444089209850062616169452667236328125
        }
    },
    "time_window": {
        "start": "2026-09-09T21:59:46+00:00",
        "end": "2026-09-10T04:20:45+00:00"
    },
    "points_count": {
        "vessel_a": 66,
        "vessel_b": 66
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 88,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 32m, avg 52m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 381 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b164m"
            },
            "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 (PROXIMA and OMSK) maintained close proximity (min 32m, avg 52m) for 381 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Sakhalin South Approach, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273264690,
        "imo": 9329655,
        "name": "PROXIMA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273371330,
        "imo": 9418509,
        "name": "OMSK",
        "flag": "Russia"
    },
    "min_distance_m": 31.5,
    "avg_distance_m": 52,
    "distance_consistency_m": 63.5,
    "duration_minutes": 381,
    "overlap_duration_s": 22859,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0.179999999999999993338661852249060757458209991455078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 1.3000000000000000444089209850062616169452667236328125
        }
    },
    "time_window": {
        "start": "2026-09-09T21:59:46+00:00",
        "end": "2026-09-10T04:20:45+00:00"
    },
    "points_count": {
        "vessel_a": 66,
        "vessel_b": 66
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 88,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 32m, avg 52m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 381 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b164m"
            },
            "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 (PROXIMA and OMSK) maintained close proximity (min 32m, avg 52m) for 381 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    }
}