ZAPRAVSHCHIK 05

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 261.1000000000000227373675443232059478759765625,
    "avg_distance_m": 262.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 0.5,
    "duration_minutes": 33.2999999999999971578290569595992565155029296875,
    "overlap_duration_s": 1997,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-07T20:11:54+00:00",
        "end": "2026-09-07T20:45:11+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 261m, avg 262m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 33 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b10m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 261m, avg 262m) for 33 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": 46.62457020000000085246938397176563739776611328125,
            "lon": 142.767634200000003374952939338982105255126953125
        },
        "time_window": {
            "start_ts": "2026-09-07T20:11:54+00:00",
            "end_ts": "2026-09-07T20:45:11+00:00"
        },
        "searched_at": "2026-09-07T21:15:01.827394+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": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 261.1000000000000227373675443232059478759765625,
    "avg_distance_m": 262.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 0.5,
    "duration_minutes": 33.2999999999999971578290569595992565155029296875,
    "overlap_duration_s": 1997,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-07T20:11:54+00:00",
        "end": "2026-09-07T20:45:11+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 261m, avg 262m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 33 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b10m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 261m, avg 262m) for 33 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": 46.62457020000000085246938397176563739776611328125,
            "lon": 142.767634200000003374952939338982105255126953125
        },
        "time_window": {
            "start_ts": "2026-09-07T20:11:54+00:00",
            "end_ts": "2026-09-07T20:45:11+00:00"
        },
        "searched_at": "2026-09-07T21:15:04.330808+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 254.400000000000005684341886080801486968994140625,
    "avg_distance_m": 255.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 0.90000000000000002220446049250313080847263336181640625,
    "duration_minutes": 36,
    "overlap_duration_s": 2161,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-07T20:09:31+00:00",
        "end": "2026-09-07T20:45:32+00:00"
    },
    "points_count": {
        "vessel_a": 11,
        "vessel_b": 11
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 254m, avg 256m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 36 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": "Moderate-confidence STS candidate. Two tankers (FLAGMAN and ZAPRAVSHCHIK 05) maintained close proximity (min 254m, avg 256m) for 36 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": 46.62462560000000166837708093225955963134765625,
            "lon": 142.76763199999999187639332376420497894287109375
        },
        "time_window": {
            "start_ts": "2026-09-07T20:09:31+00:00",
            "end_ts": "2026-09-07T20:45:32+00:00"
        },
        "searched_at": "2026-09-07T21:15:06.795652+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 254.400000000000005684341886080801486968994140625,
    "avg_distance_m": 255.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 0.90000000000000002220446049250313080847263336181640625,
    "duration_minutes": 36,
    "overlap_duration_s": 2161,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-07T20:09:31+00:00",
        "end": "2026-09-07T20:45:32+00:00"
    },
    "points_count": {
        "vessel_a": 11,
        "vessel_b": 11
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 254m, avg 256m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 36 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": "Moderate-confidence STS candidate. Two tankers (FLAGMAN and ZAPRAVSHCHIK 05) maintained close proximity (min 254m, avg 256m) for 36 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": 46.62462560000000166837708093225955963134765625,
            "lon": 142.76763199999999187639332376420497894287109375
        },
        "time_window": {
            "start_ts": "2026-09-07T20:09:31+00:00",
            "end_ts": "2026-09-07T20:45:32+00:00"
        },
        "searched_at": "2026-09-07T21:15:11.020646+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 181,
    "points_in_zone": 7,
    "first_point": {
        "ts": "2026-09-07T20:08:45+00:00",
        "lat": 46.62516329999999697974999435245990753173828125,
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    "last_point": {
        "ts": "2026-09-07T23:09:45+00:00",
        "lat": 46.62515830000000249810909735970199108123779296875,
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}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 181,
    "points_in_zone": 7,
    "first_point": {
        "ts": "2026-09-07T20:08:45+00:00",
        "lat": 46.62516329999999697974999435245990753173828125,
        "lon": 142.76615670000001045991666615009307861328125
    },
    "last_point": {
        "ts": "2026-09-07T23:09:45+00:00",
        "lat": 46.62515830000000249810909735970199108123779296875,
        "lon": 142.76614499999999452484189532697200775146484375
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 62,
    "points_in_zone": 2,
    "first_point": {
        "ts": "2026-09-07T03:51:38+00:00",
        "lat": 46.6251299999999986312104738317430019378662109375,
        "lon": 142.766266699999988531999406404793262481689453125
    },
    "last_point": {
        "ts": "2026-09-07T04:53:38+00:00",
        "lat": 46.625141700000000355430529452860355377197265625,
        "lon": 142.766261700000001155785867013037204742431640625
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 62,
    "points_in_zone": 2,
    "first_point": {
        "ts": "2026-09-07T03:51:38+00:00",
        "lat": 46.6251299999999986312104738317430019378662109375,
        "lon": 142.766266699999988531999406404793262481689453125
    },
    "last_point": {
        "ts": "2026-09-07T04:53:38+00:00",
        "lat": 46.625141700000000355430529452860355377197265625,
        "lon": 142.766261700000001155785867013037204742431640625
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 118,
    "points_in_zone": 3,
    "first_point": {
        "ts": "2026-09-07T02:55:36+00:00",
        "lat": 46.625124999999997044142219237983226776123046875,
        "lon": 142.76626329999999143183231353759765625
    },
    "last_point": {
        "ts": "2026-09-07T04:53:38+00:00",
        "lat": 46.625141700000000355430529452860355377197265625,
        "lon": 142.766261700000001155785867013037204742431640625
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}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 118,
    "points_in_zone": 3,
    "first_point": {
        "ts": "2026-09-07T02:55:36+00:00",
        "lat": 46.625124999999997044142219237983226776123046875,
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        "lat": 46.625141700000000355430529452860355377197265625,
        "lon": 142.766261700000001155785867013037204742431640625
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 224,
    "points_in_zone": 5,
    "first_point": {
        "ts": "2026-09-07T01:09:37+00:00",
        "lat": 46.6251299999999986312104738317430019378662109375,
        "lon": 142.766268300000007229755283333361148834228515625
    },
    "last_point": {
        "ts": "2026-09-07T04:53:38+00:00",
        "lat": 46.625141700000000355430529452860355377197265625,
        "lon": 142.766261700000001155785867013037204742431640625
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 224,
    "points_in_zone": 5,
    "first_point": {
        "ts": "2026-09-07T01:09:37+00:00",
        "lat": 46.6251299999999986312104738317430019378662109375,
        "lon": 142.766268300000007229755283333361148834228515625
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    "last_point": {
        "ts": "2026-09-07T04:53:38+00:00",
        "lat": 46.625141700000000355430529452860355377197265625,
        "lon": 142.766261700000001155785867013037204742431640625
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}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 252.400000000000005684341886080801486968994140625,
    "avg_distance_m": 254.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 1.3000000000000000444089209850062616169452667236328125,
    "duration_minutes": 64.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 3889,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-07T00:14:20+00:00",
        "end": "2026-09-07T01:19:09+00:00"
    },
    "points_count": {
        "vessel_a": 26,
        "vessel_b": 26
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 252m, avg 254m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 65 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": "Moderate-confidence STS candidate. Two tankers (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 252m, avg 254m) for 65 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": "inconclusive",
        "centroid": {
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            "lon": 142.7676960000000008221832104027271270751953125
        },
        "time_window": {
            "start_ts": "2026-09-07T00:14:20+00:00",
            "end_ts": "2026-09-07T01:19:09+00:00"
        },
        "searched_at": "2026-09-07T06:45:02.031849+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260906T203938_20260906T204003_004462_008466_C195_COG",
        "scene_datetime": "2026-09-06T20:39:38.251266Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 140.570435000000003356035449542105197906494140625,
            "min_lat": 46.1116260000000011132215149700641632080078125,
            "max_lon": 144.29257200000000693762558512389659881591796875,
            "max_lat": 48.00598099999999845977072254754602909088134765625
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1236439_thumbnail_20260907064507.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1236439_thumbnail_20260907064507.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
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    "avg_distance_m": 254.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 1.3000000000000000444089209850062616169452667236328125,
    "duration_minutes": 64.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 3889,
    "speed_a_avg": 0,
    "speed_a_std": 0,
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        "vessel_b": {
            "avg_sog": 0,
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    "time_window": {
        "start": "2026-09-07T00:14:20+00:00",
        "end": "2026-09-07T01:19:09+00:00"
    },
    "points_count": {
        "vessel_a": 26,
        "vessel_b": 26
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    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 252m, avg 254m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 65 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"
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        },
        "summary": "Moderate-confidence STS candidate. Two tankers (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 252m, avg 254m) for 65 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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        "status": "inconclusive",
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            "start_ts": "2026-09-07T00:14:20+00:00",
            "end_ts": "2026-09-07T01:19:09+00:00"
        },
        "searched_at": "2026-09-07T06:45:08.658465+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260906T203938_20260906T204003_004462_008466_C195_COG",
        "scene_datetime": "2026-09-06T20:39:38.251266Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 140.570435000000003356035449542105197906494140625,
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        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1236440_thumbnail_20260907064512.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1236440_thumbnail_20260907064512.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
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        "mmsi": 273439180,
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        "vessel_b": {
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    },
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        "start": "2026-09-06T23:45:50+00:00",
        "end": "2026-09-07T01:19:09+00:00"
    },
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    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 252m, avg 254m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 93 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"
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        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 252m, avg 254m) for 93 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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{
    "vessel_a": {
        "mmsi": 273456730,
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        "vessel_b": {
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                "max": 25,
                "detail": "Min distance 252m, avg 254m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 93 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
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                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
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                "score": 5,
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        "summary": "High-confidence STS candidate. Two tankers (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 252m, avg 254m) for 93 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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{
    "zone_id": "russia_prigorodnoye",
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{
    "zone_id": "russia_sakhalin_south",
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    "vessel_a": {
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        "start": "2026-09-06T22:35:31+00:00",
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                "max": 25,
                "detail": "Min distance 254m, avg 255m"
            },
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                "max": 25,
                "detail": "Duration 53 minutes"
            },
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                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
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                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
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                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
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        "summary": "Moderate-confidence STS candidate. Two tankers (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 254m, avg 255m) for 53 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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{
    "vessel_a": {
        "mmsi": 273456730,
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                "max": 25,
                "detail": "Min distance 254m, avg 255m"
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            },
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                "detail": "both nearly stationary; very stable speeds"
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                "detail": "Distance variance \u00b11m"
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                "score": 5,
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                "detail": "Isolation data not available"
            },
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{
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{
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{
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    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-06T21:18:33+00:00",
        "end": "2026-09-06T22:11:53+00:00"
    },
    "points_count": {
        "vessel_a": 22,
        "vessel_b": 22
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 252m, avg 255m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 53 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": "Moderate-confidence STS candidate. Two tankers (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 252m, avg 255m) for 53 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": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 252.400000000000005684341886080801486968994140625,
    "avg_distance_m": 254.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 53.2999999999999971578290569595992565155029296875,
    "overlap_duration_s": 3200,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-06T21:18:33+00:00",
        "end": "2026-09-06T22:11:53+00:00"
    },
    "points_count": {
        "vessel_a": 22,
        "vessel_b": 22
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 252m, avg 255m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 53 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": "Moderate-confidence STS candidate. Two tankers (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 252m, avg 255m) for 53 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": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 253,
    "avg_distance_m": 254.099999999999994315658113919198513031005859375,
    "distance_consistency_m": 0.90000000000000002220446049250313080847263336181640625,
    "duration_minutes": 53,
    "overlap_duration_s": 3181,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-06T20:09:16+00:00",
        "end": "2026-09-06T21:02:17+00:00"
    },
    "points_count": {
        "vessel_a": 23,
        "vessel_b": 23
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 253m, avg 254m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 53 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": "Moderate-confidence STS candidate. Two tankers (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 253m, avg 254m) for 53 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": "inconclusive",
        "centroid": {
            "lat": 46.62455039999999684141585021279752254486083984375,
            "lon": 142.76769189999998843632056377828121185302734375
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        "time_window": {
            "start_ts": "2026-09-06T20:09:16+00:00",
            "end_ts": "2026-09-06T21:02:17+00:00"
        },
        "searched_at": "2026-09-07T02:45:04.302095+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260906T203938_20260906T204003_004462_008466_C195_COG",
        "scene_datetime": "2026-09-06T20:39:38.251266Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 140.570435000000003356035449542105197906494140625,
            "min_lat": 46.1116260000000011132215149700641632080078125,
            "max_lon": 144.29257200000000693762558512389659881591796875,
            "max_lat": 48.00598099999999845977072254754602909088134765625
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1234665_thumbnail_20260907024508.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1234665_thumbnail_20260907024508.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 253,
    "avg_distance_m": 254.099999999999994315658113919198513031005859375,
    "distance_consistency_m": 0.90000000000000002220446049250313080847263336181640625,
    "duration_minutes": 53,
    "overlap_duration_s": 3181,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-06T20:09:16+00:00",
        "end": "2026-09-06T21:02:17+00:00"
    },
    "points_count": {
        "vessel_a": 23,
        "vessel_b": 23
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 253m, avg 254m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 53 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": "Moderate-confidence STS candidate. Two tankers (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 253m, avg 254m) for 53 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": "inconclusive",
        "centroid": {
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            "lon": 142.76769189999998843632056377828121185302734375
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        "time_window": {
            "start_ts": "2026-09-06T20:09:16+00:00",
            "end_ts": "2026-09-06T21:02:17+00:00"
        },
        "searched_at": "2026-09-07T02:45:09.297019+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260906T203938_20260906T204003_004462_008466_C195_COG",
        "scene_datetime": "2026-09-06T20:39:38.251266Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 140.570435000000003356035449542105197906494140625,
            "min_lat": 46.1116260000000011132215149700641632080078125,
            "max_lon": 144.29257200000000693762558512389659881591796875,
            "max_lat": 48.00598099999999845977072254754602909088134765625
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1234666_thumbnail_20260907024512.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1234666_thumbnail_20260907024512.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 252.400000000000005684341886080801486968994140625,
    "avg_distance_m": 254.400000000000005684341886080801486968994140625,
    "distance_consistency_m": 1,
    "duration_minutes": 113.900000000000005684341886080801486968994140625,
    "overlap_duration_s": 6833,
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    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-06T19:08:24+00:00",
        "end": "2026-09-06T21:02:17+00:00"
    },
    "points_count": {
        "vessel_a": 45,
        "vessel_b": 45
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 252m, avg 254m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 114 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 (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 252m, avg 254m) for 114 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": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 252.400000000000005684341886080801486968994140625,
    "avg_distance_m": 254.400000000000005684341886080801486968994140625,
    "distance_consistency_m": 1,
    "duration_minutes": 113.900000000000005684341886080801486968994140625,
    "overlap_duration_s": 6833,
    "speed_a_avg": 0,
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    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
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    },
    "time_window": {
        "start": "2026-09-06T19:08:24+00:00",
        "end": "2026-09-06T21:02:17+00:00"
    },
    "points_count": {
        "vessel_a": 45,
        "vessel_b": 45
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 252m, avg 254m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 114 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 (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 252m, avg 254m) for 114 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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{
    "zone_id": "russia_sakhalin_south",
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{
    "radius_m": 1.3000000000000000444089209850062616169452667236328125,
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{
    "radius_m": 1.3000000000000000444089209850062616169452667236328125,
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{
    "zone_id": "russia_prigorodnoye",
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}

{
    "zone_id": "russia_sakhalin_south",
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}

{
    "zone_id": "russia_prigorodnoye",
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        "ts": "2026-09-06T00:40:37+00:00",
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{
    "zone_id": "russia_sakhalin_south",
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    "points_in_zone": 9,
    "first_point": {
        "ts": "2026-09-06T00:40:37+00:00",
        "lat": 46.62515669999999801120793563313782215118408203125,
        "lon": 142.766163299999988112176652066409587860107421875
    },
    "last_point": {
        "ts": "2026-09-06T03:12:37+00:00",
        "lat": 46.62515669999999801120793563313782215118408203125,
        "lon": 142.76614169999999148785718716681003570556640625
    }
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 254.5,
    "avg_distance_m": 256.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 33,
    "overlap_duration_s": 1980,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T23:10:03+00:00",
        "end": "2026-09-05T23:43:03+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 254m, avg 257m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 33 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": "Moderate-confidence STS candidate. Two tankers (FLAGMAN and ZAPRAVSHCHIK 05) maintained close proximity (min 254m, avg 257m) for 33 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": 46.6246172999999970443241181783378124237060546875,
            "lon": 142.76764789999998583880369551479816436767578125
        },
        "time_window": {
            "start_ts": "2026-09-05T23:10:03+00:00",
            "end_ts": "2026-09-05T23:43:03+00:00"
        },
        "searched_at": "2026-09-06T05:45:12.767131+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 254.5,
    "avg_distance_m": 256.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 33,
    "overlap_duration_s": 1980,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T23:10:03+00:00",
        "end": "2026-09-05T23:43:03+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 254m, avg 257m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 33 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": "Moderate-confidence STS candidate. Two tankers (FLAGMAN and ZAPRAVSHCHIK 05) maintained close proximity (min 254m, avg 257m) for 33 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": 46.6246172999999970443241181783378124237060546875,
            "lon": 142.76764789999998583880369551479816436767578125
        },
        "time_window": {
            "start_ts": "2026-09-05T23:10:03+00:00",
            "end_ts": "2026-09-05T23:43:03+00:00"
        },
        "searched_at": "2026-09-06T05:45:15.211416+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": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 260.19999999999998863131622783839702606201171875,
    "avg_distance_m": 261.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 0.90000000000000002220446049250313080847263336181640625,
    "duration_minutes": 54,
    "overlap_duration_s": 3241,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T23:05:35+00:00",
        "end": "2026-09-05T23:59:36+00:00"
    },
    "points_count": {
        "vessel_a": 23,
        "vessel_b": 23
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 260m, avg 262m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 54 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": "Moderate-confidence STS candidate. Two tankers (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 260m, avg 262m) for 54 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": 46.62456660000000141508280648849904537200927734375,
            "lon": 142.7676437000000078114680945873260498046875
        },
        "time_window": {
            "start_ts": "2026-09-05T23:05:35+00:00",
            "end_ts": "2026-09-05T23:59:36+00:00"
        },
        "searched_at": "2026-09-06T05:45:07.360808+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": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 260.19999999999998863131622783839702606201171875,
    "avg_distance_m": 261.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 0.90000000000000002220446049250313080847263336181640625,
    "duration_minutes": 54,
    "overlap_duration_s": 3241,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T23:05:35+00:00",
        "end": "2026-09-05T23:59:36+00:00"
    },
    "points_count": {
        "vessel_a": 23,
        "vessel_b": 23
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 260m, avg 262m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 54 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": "Moderate-confidence STS candidate. Two tankers (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 260m, avg 262m) for 54 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": 46.62456660000000141508280648849904537200927734375,
            "lon": 142.7676437000000078114680945873260498046875
        },
        "time_window": {
            "start_ts": "2026-09-05T23:05:35+00:00",
            "end_ts": "2026-09-05T23:59:36+00:00"
        },
        "searched_at": "2026-09-06T05:45:10.083248+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 248,
    "points_in_zone": 22,
    "first_point": {
        "ts": "2026-09-05T23:04:37+00:00",
        "lat": 46.62514829999999932397258817218244075775146484375,
        "lon": 142.76615670000001045991666615009307861328125
    },
    "last_point": {
        "ts": "2026-09-06T03:12:37+00:00",
        "lat": 46.62515669999999801120793563313782215118408203125,
        "lon": 142.76614169999999148785718716681003570556640625
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 248,
    "points_in_zone": 22,
    "first_point": {
        "ts": "2026-09-05T23:04:37+00:00",
        "lat": 46.62514829999999932397258817218244075775146484375,
        "lon": 142.76615670000001045991666615009307861328125
    },
    "last_point": {
        "ts": "2026-09-06T03:12:37+00:00",
        "lat": 46.62515669999999801120793563313782215118408203125,
        "lon": 142.76614169999999148785718716681003570556640625
    }
}

{
    "radius_m": 1.5,
    "duration_minutes": 248,
    "points": 22,
    "centroid": {
        "lat": 46.6251515909090841205397737212479114532470703125,
        "lon": 142.766155836363623166107572615146636962890625
    },
    "bbox": {
        "min_lat": 46.625145000000003392415237613022327423095703125,
        "min_lon": 142.766138299999994387690094299614429473876953125,
        "max_lat": 46.62515830000000249810909735970199108123779296875,
        "max_lon": 142.766166700000013634053175337612628936767578125
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "radius_m": 1.5,
    "duration_minutes": 248,
    "points": 22,
    "centroid": {
        "lat": 46.6251515909090841205397737212479114532470703125,
        "lon": 142.766155836363623166107572615146636962890625
    },
    "bbox": {
        "min_lat": 46.625145000000003392415237613022327423095703125,
        "min_lon": 142.766138299999994387690094299614429473876953125,
        "max_lat": 46.62515830000000249810909735970199108123779296875,
        "max_lon": 142.766166700000013634053175337612628936767578125
    },
    "zone_id": "russia_sakhalin_south"
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 254.5,
    "avg_distance_m": 257.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 1.5,
    "duration_minutes": 96,
    "overlap_duration_s": 5761,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T22:07:02+00:00",
        "end": "2026-09-05T23:43:03+00:00"
    },
    "points_count": {
        "vessel_a": 16,
        "vessel_b": 16
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 254m, avg 257m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 96 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 (FLAGMAN and ZAPRAVSHCHIK 05) maintained close proximity (min 254m, avg 257m) for 96 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": 46.62461309999999770070644444786012172698974609375,
            "lon": 142.767645100000009961149771697819232940673828125
        },
        "time_window": {
            "start_ts": "2026-09-05T22:07:02+00:00",
            "end_ts": "2026-09-05T23:43:03+00:00"
        },
        "searched_at": "2026-09-06T05:00:07.155052+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 254.5,
    "avg_distance_m": 257.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 1.5,
    "duration_minutes": 96,
    "overlap_duration_s": 5761,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T22:07:02+00:00",
        "end": "2026-09-05T23:43:03+00:00"
    },
    "points_count": {
        "vessel_a": 16,
        "vessel_b": 16
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 254m, avg 257m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 96 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 (FLAGMAN and ZAPRAVSHCHIK 05) maintained close proximity (min 254m, avg 257m) for 96 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": 46.62461309999999770070644444786012172698974609375,
            "lon": 142.767645100000009961149771697819232940673828125
        },
        "time_window": {
            "start_ts": "2026-09-05T22:07:02+00:00",
            "end_ts": "2026-09-05T23:43:03+00:00"
        },
        "searched_at": "2026-09-06T05:00:09.656525+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": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 260.19999999999998863131622783839702606201171875,
    "avg_distance_m": 261.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 0.90000000000000002220446049250313080847263336181640625,
    "duration_minutes": 114.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 6889,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T22:04:47+00:00",
        "end": "2026-09-05T23:59:36+00:00"
    },
    "points_count": {
        "vessel_a": 45,
        "vessel_b": 45
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 260m, avg 262m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 115 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 (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 260m, avg 262m) for 115 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": 46.624566799999996646874933503568172454833984375,
            "lon": 142.767643099999986588954925537109375
        },
        "time_window": {
            "start_ts": "2026-09-05T22:04:47+00:00",
            "end_ts": "2026-09-05T23:59:36+00:00"
        },
        "searched_at": "2026-09-06T05:00:01.909207+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": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 260.19999999999998863131622783839702606201171875,
    "avg_distance_m": 261.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 0.90000000000000002220446049250313080847263336181640625,
    "duration_minutes": 114.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 6889,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T22:04:47+00:00",
        "end": "2026-09-05T23:59:36+00:00"
    },
    "points_count": {
        "vessel_a": 45,
        "vessel_b": 45
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 260m, avg 262m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 115 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 (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 260m, avg 262m) for 115 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": 46.624566799999996646874933503568172454833984375,
            "lon": 142.767643099999986588954925537109375
        },
        "time_window": {
            "start_ts": "2026-09-05T22:04:47+00:00",
            "end_ts": "2026-09-05T23:59:36+00:00"
        },
        "searched_at": "2026-09-06T05:00:04.708876+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 308,
    "points_in_zone": 34,
    "first_point": {
        "ts": "2026-09-05T22:04:39+00:00",
        "lat": 46.62514999999999787405613460578024387359619140625,
        "lon": 142.766150000000010322764865122735500335693359375
    },
    "last_point": {
        "ts": "2026-09-06T03:12:37+00:00",
        "lat": 46.62515669999999801120793563313782215118408203125,
        "lon": 142.76614169999999148785718716681003570556640625
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 308,
    "points_in_zone": 34,
    "first_point": {
        "ts": "2026-09-05T22:04:39+00:00",
        "lat": 46.62514999999999787405613460578024387359619140625,
        "lon": 142.766150000000010322764865122735500335693359375
    },
    "last_point": {
        "ts": "2026-09-06T03:12:37+00:00",
        "lat": 46.62515669999999801120793563313782215118408203125,
        "lon": 142.76614169999999148785718716681003570556640625
    }
}

{
    "radius_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 308,
    "points": 34,
    "centroid": {
        "lat": 46.625151617647048851722502149641513824462890625,
        "lon": 142.7661564235294235913897864520549774169921875
    },
    "bbox": {
        "min_lat": 46.625145000000003392415237613022327423095703125,
        "min_lon": 142.766138299999994387690094299614429473876953125,
        "max_lat": 46.62515830000000249810909735970199108123779296875,
        "max_lon": 142.766171700000001010266714729368686676025390625
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "radius_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 308,
    "points": 34,
    "centroid": {
        "lat": 46.625151617647048851722502149641513824462890625,
        "lon": 142.7661564235294235913897864520549774169921875
    },
    "bbox": {
        "min_lat": 46.625145000000003392415237613022327423095703125,
        "min_lon": 142.766138299999994387690094299614429473876953125,
        "max_lat": 46.62515830000000249810909735970199108123779296875,
        "max_lon": 142.766171700000001010266714729368686676025390625
    },
    "zone_id": "russia_sakhalin_south"
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 254.5,
    "avg_distance_m": 257.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 153,
    "overlap_duration_s": 9182,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T21:10:01+00:00",
        "end": "2026-09-05T23:43:03+00:00"
    },
    "points_count": {
        "vessel_a": 23,
        "vessel_b": 23
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 254m, avg 257m"
            },
            "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 \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 (FLAGMAN and ZAPRAVSHCHIK 05) maintained close proximity (min 254m, avg 257m) 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."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.62461239999999662586560589261353015899658203125,
            "lon": 142.767643300000003137029125355184078216552734375
        },
        "time_window": {
            "start_ts": "2026-09-05T21:10:01+00:00",
            "end_ts": "2026-09-05T23:43:03+00:00"
        },
        "searched_at": "2026-09-06T03:30:01.830024+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 254.5,
    "avg_distance_m": 257.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 153,
    "overlap_duration_s": 9182,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T21:10:01+00:00",
        "end": "2026-09-05T23:43:03+00:00"
    },
    "points_count": {
        "vessel_a": 23,
        "vessel_b": 23
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 254m, avg 257m"
            },
            "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 \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 (FLAGMAN and ZAPRAVSHCHIK 05) maintained close proximity (min 254m, avg 257m) 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."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.62461239999999662586560589261353015899658203125,
            "lon": 142.767643300000003137029125355184078216552734375
        },
        "time_window": {
            "start_ts": "2026-09-05T21:10:01+00:00",
            "end_ts": "2026-09-05T23:43:03+00:00"
        },
        "searched_at": "2026-09-06T03:30:04.291371+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": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 260.19999999999998863131622783839702606201171875,
    "avg_distance_m": 261.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 1,
    "duration_minutes": 176.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 10566,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T21:03:30+00:00",
        "end": "2026-09-05T23:59:36+00:00"
    },
    "points_count": {
        "vessel_a": 68,
        "vessel_b": 68
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 260m, avg 262m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 176 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 (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 260m, avg 262m) for 176 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": 46.624566299999997909253579564392566680908203125,
            "lon": 142.76764120000001412336132489144802093505859375
        },
        "time_window": {
            "start_ts": "2026-09-05T21:03:30+00:00",
            "end_ts": "2026-09-05T23:59:36+00:00"
        },
        "searched_at": "2026-09-06T03:45:08.515063+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": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 260.19999999999998863131622783839702606201171875,
    "avg_distance_m": 261.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 1,
    "duration_minutes": 176.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 10566,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T21:03:30+00:00",
        "end": "2026-09-05T23:59:36+00:00"
    },
    "points_count": {
        "vessel_a": 68,
        "vessel_b": 68
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 260m, avg 262m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 176 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 (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 260m, avg 262m) for 176 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": 46.624566299999997909253579564392566680908203125,
            "lon": 142.76764120000001412336132489144802093505859375
        },
        "time_window": {
            "start_ts": "2026-09-05T21:03:30+00:00",
            "end_ts": "2026-09-05T23:59:36+00:00"
        },
        "searched_at": "2026-09-06T03:45:11.129853+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 371,
    "points_in_zone": 48,
    "first_point": {
        "ts": "2026-09-05T21:01:38+00:00",
        "lat": 46.62514829999999932397258817218244075775146484375,
        "lon": 142.76614829999999756182660348713397979736328125
    },
    "last_point": {
        "ts": "2026-09-06T03:12:37+00:00",
        "lat": 46.62515669999999801120793563313782215118408203125,
        "lon": 142.76614169999999148785718716681003570556640625
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 371,
    "points_in_zone": 48,
    "first_point": {
        "ts": "2026-09-05T21:01:38+00:00",
        "lat": 46.62514829999999932397258817218244075775146484375,
        "lon": 142.76614829999999756182660348713397979736328125
    },
    "last_point": {
        "ts": "2026-09-06T03:12:37+00:00",
        "lat": 46.62515669999999801120793563313782215118408203125,
        "lon": 142.76614169999999148785718716681003570556640625
    }
}

{
    "radius_m": 2,
    "duration_minutes": 371,
    "points": 48,
    "centroid": {
        "lat": 46.625150483333328566004638560116291046142578125,
        "lon": 142.766154166666723313028342090547084808349609375
    },
    "bbox": {
        "min_lat": 46.625135000000000218278728425502777099609375,
        "min_lon": 142.766138299999994387690094299614429473876953125,
        "max_lat": 46.62515830000000249810909735970199108123779296875,
        "max_lon": 142.766171700000001010266714729368686676025390625
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "radius_m": 2,
    "duration_minutes": 371,
    "points": 48,
    "centroid": {
        "lat": 46.625150483333328566004638560116291046142578125,
        "lon": 142.766154166666723313028342090547084808349609375
    },
    "bbox": {
        "min_lat": 46.625135000000000218278728425502777099609375,
        "min_lon": 142.766138299999994387690094299614429473876953125,
        "max_lat": 46.62515830000000249810909735970199108123779296875,
        "max_lon": 142.766171700000001010266714729368686676025390625
    },
    "zone_id": "russia_sakhalin_south"
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 254.5,
    "avg_distance_m": 257.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 1.3000000000000000444089209850062616169452667236328125,
    "duration_minutes": 213,
    "overlap_duration_s": 12782,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T20:10:01+00:00",
        "end": "2026-09-05T23:43:03+00:00"
    },
    "points_count": {
        "vessel_a": 27,
        "vessel_b": 27
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 254m, avg 257m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 213 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 (FLAGMAN and ZAPRAVSHCHIK 05) maintained close proximity (min 254m, avg 257m) for 213 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": 46.62461429999999751316863694228231906890869140625,
            "lon": 142.767642499999993788151186890900135040283203125
        },
        "time_window": {
            "start_ts": "2026-09-05T20:10:01+00:00",
            "end_ts": "2026-09-05T23:43:03+00:00"
        },
        "searched_at": "2026-09-06T03:15:09.115689+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 254.5,
    "avg_distance_m": 257.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 1.3000000000000000444089209850062616169452667236328125,
    "duration_minutes": 213,
    "overlap_duration_s": 12782,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T20:10:01+00:00",
        "end": "2026-09-05T23:43:03+00:00"
    },
    "points_count": {
        "vessel_a": 27,
        "vessel_b": 27
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 254m, avg 257m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 213 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 (FLAGMAN and ZAPRAVSHCHIK 05) maintained close proximity (min 254m, avg 257m) for 213 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": 46.62461429999999751316863694228231906890869140625,
            "lon": 142.767642499999993788151186890900135040283203125
        },
        "time_window": {
            "start_ts": "2026-09-05T20:10:01+00:00",
            "end_ts": "2026-09-05T23:43:03+00:00"
        },
        "searched_at": "2026-09-06T03:15:12.305989+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": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 260.19999999999998863131622783839702606201171875,
    "avg_distance_m": 262.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 1,
    "duration_minutes": 236.599999999999994315658113919198513031005859375,
    "overlap_duration_s": 14196,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T20:03:00+00:00",
        "end": "2026-09-05T23:59:36+00:00"
    },
    "points_count": {
        "vessel_a": 89,
        "vessel_b": 89
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 260m, avg 262m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 237 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 (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 260m, avg 262m) for 237 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": 46.62456590000000034024196793325245380401611328125,
            "lon": 142.767640300000010711301001720130443572998046875
        },
        "time_window": {
            "start_ts": "2026-09-05T20:03:00+00:00",
            "end_ts": "2026-09-05T23:59:36+00:00"
        },
        "searched_at": "2026-09-06T03:15:02.081722+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": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 260.19999999999998863131622783839702606201171875,
    "avg_distance_m": 262.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 1,
    "duration_minutes": 236.599999999999994315658113919198513031005859375,
    "overlap_duration_s": 14196,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T20:03:00+00:00",
        "end": "2026-09-05T23:59:36+00:00"
    },
    "points_count": {
        "vessel_a": 89,
        "vessel_b": 89
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 260m, avg 262m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 237 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 (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 260m, avg 262m) for 237 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": 46.62456590000000034024196793325245380401611328125,
            "lon": 142.767640300000010711301001720130443572998046875
        },
        "time_window": {
            "start_ts": "2026-09-05T20:03:00+00:00",
            "end_ts": "2026-09-05T23:59:36+00:00"
        },
        "searched_at": "2026-09-06T03:15:04.875360+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 386,
    "points_in_zone": 53,
    "first_point": {
        "ts": "2026-09-05T20:46:37+00:00",
        "lat": 46.6251467000000019424987840466201305389404296875,
        "lon": 142.766154999999997698978404514491558074951171875
    },
    "last_point": {
        "ts": "2026-09-06T03:12:37+00:00",
        "lat": 46.62515669999999801120793563313782215118408203125,
        "lon": 142.76614169999999148785718716681003570556640625
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 386,
    "points_in_zone": 53,
    "first_point": {
        "ts": "2026-09-05T20:46:37+00:00",
        "lat": 46.6251467000000019424987840466201305389404296875,
        "lon": 142.766154999999997698978404514491558074951171875
    },
    "last_point": {
        "ts": "2026-09-06T03:12:37+00:00",
        "lat": 46.62515669999999801120793563313782215118408203125,
        "lon": 142.76614169999999148785718716681003570556640625
    }
}

{
    "radius_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 386,
    "points": 53,
    "centroid": {
        "lat": 46.62515021698113315551381674595177173614501953125,
        "lon": 142.7661535207547558457008562982082366943359375
    },
    "bbox": {
        "min_lat": 46.625135000000000218278728425502777099609375,
        "min_lon": 142.766138299999994387690094299614429473876953125,
        "max_lat": 46.62515830000000249810909735970199108123779296875,
        "max_lon": 142.766171700000001010266714729368686676025390625
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "radius_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 386,
    "points": 53,
    "centroid": {
        "lat": 46.62515021698113315551381674595177173614501953125,
        "lon": 142.7661535207547558457008562982082366943359375
    },
    "bbox": {
        "min_lat": 46.625135000000000218278728425502777099609375,
        "min_lon": 142.766138299999994387690094299614429473876953125,
        "max_lat": 46.62515830000000249810909735970199108123779296875,
        "max_lon": 142.766171700000001010266714729368686676025390625
    },
    "zone_id": "russia_sakhalin_south"
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 254.5,
    "avg_distance_m": 257,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 231.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 13863,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T19:52:00+00:00",
        "end": "2026-09-05T23:43:03+00:00"
    },
    "points_count": {
        "vessel_a": 28,
        "vessel_b": 28
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 254m, avg 257m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 231 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 (FLAGMAN and ZAPRAVSHCHIK 05) maintained close proximity (min 254m, avg 257m) for 231 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": 46.62461470000000218760760617442429065704345703125,
            "lon": 142.76764220000001159860403276979923248291015625
        },
        "time_window": {
            "start_ts": "2026-09-05T19:52:00+00:00",
            "end_ts": "2026-09-05T23:43:03+00:00"
        },
        "searched_at": "2026-09-06T01:45:07.659056+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 254.5,
    "avg_distance_m": 257,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 231.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 13863,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T19:52:00+00:00",
        "end": "2026-09-05T23:43:03+00:00"
    },
    "points_count": {
        "vessel_a": 28,
        "vessel_b": 28
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 254m, avg 257m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 231 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 (FLAGMAN and ZAPRAVSHCHIK 05) maintained close proximity (min 254m, avg 257m) for 231 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": 46.62461470000000218760760617442429065704345703125,
            "lon": 142.76764220000001159860403276979923248291015625
        },
        "time_window": {
            "start_ts": "2026-09-05T19:52:00+00:00",
            "end_ts": "2026-09-05T23:43:03+00:00"
        },
        "searched_at": "2026-09-06T01:45:10.322779+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": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 260.19999999999998863131622783839702606201171875,
    "avg_distance_m": 262.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 1,
    "duration_minutes": 291,
    "overlap_duration_s": 17461,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T19:08:35+00:00",
        "end": "2026-09-05T23:59:36+00:00"
    },
    "points_count": {
        "vessel_a": 109,
        "vessel_b": 109
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 260m, avg 262m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 291 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 (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 260m, avg 262m) for 291 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": 46.624565799999999171632225625216960906982421875,
            "lon": 142.76764059999999290084815584123134613037109375
        },
        "time_window": {
            "start_ts": "2026-09-05T19:08:35+00:00",
            "end_ts": "2026-09-05T23:59:36+00:00"
        },
        "searched_at": "2026-09-06T02:00:01.408985+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": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 260.19999999999998863131622783839702606201171875,
    "avg_distance_m": 262.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 1,
    "duration_minutes": 291,
    "overlap_duration_s": 17461,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T19:08:35+00:00",
        "end": "2026-09-05T23:59:36+00:00"
    },
    "points_count": {
        "vessel_a": 109,
        "vessel_b": 109
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 260m, avg 262m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 291 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 (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 260m, avg 262m) for 291 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": 46.624565799999999171632225625216960906982421875,
            "lon": 142.76764059999999290084815584123134613037109375
        },
        "time_window": {
            "start_ts": "2026-09-05T19:08:35+00:00",
            "end_ts": "2026-09-05T23:59:36+00:00"
        },
        "searched_at": "2026-09-06T02:00:10.945388+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 398,
    "points_in_zone": 57,
    "first_point": {
        "ts": "2026-09-05T19:51:38+00:00",
        "lat": 46.62515170000000352956703864037990570068359375,
        "lon": 142.76614829999999756182660348713397979736328125
    },
    "last_point": {
        "ts": "2026-09-06T02:29:36+00:00",
        "lat": 46.62515330000000091104084276594221591949462890625,
        "lon": 142.76614330000001018561306409537792205810546875
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 398,
    "points_in_zone": 57,
    "first_point": {
        "ts": "2026-09-05T19:51:38+00:00",
        "lat": 46.62515170000000352956703864037990570068359375,
        "lon": 142.76614829999999756182660348713397979736328125
    },
    "last_point": {
        "ts": "2026-09-06T02:29:36+00:00",
        "lat": 46.62515330000000091104084276594221591949462890625,
        "lon": 142.76614330000001018561306409537792205810546875
    }
}

{
    "radius_m": 2,
    "duration_minutes": 398,
    "points": 57,
    "centroid": {
        "lat": 46.62515055438596078829505131579935550689697265625,
        "lon": 142.766153917543846318949363194406032562255859375
    },
    "bbox": {
        "min_lat": 46.625135000000000218278728425502777099609375,
        "min_lon": 142.76614169999999148785718716681003570556640625,
        "max_lat": 46.62515830000000249810909735970199108123779296875,
        "max_lon": 142.766171700000001010266714729368686676025390625
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "radius_m": 2,
    "duration_minutes": 398,
    "points": 57,
    "centroid": {
        "lat": 46.62515055438596078829505131579935550689697265625,
        "lon": 142.766153917543846318949363194406032562255859375
    },
    "bbox": {
        "min_lat": 46.625135000000000218278728425502777099609375,
        "min_lon": 142.76614169999999148785718716681003570556640625,
        "max_lat": 46.62515830000000249810909735970199108123779296875,
        "max_lon": 142.766171700000001010266714729368686676025390625
    },
    "zone_id": "russia_sakhalin_south"
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 254.5,
    "avg_distance_m": 257.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 339.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 20343,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T18:04:00+00:00",
        "end": "2026-09-05T23:43:03+00:00"
    },
    "points_count": {
        "vessel_a": 38,
        "vessel_b": 38
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 254m, avg 257m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 339 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 (FLAGMAN and ZAPRAVSHCHIK 05) maintained close proximity (min 254m, avg 257m) for 339 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": 46.6246131999999988693161867558956146240234375,
            "lon": 142.767641700000012860982678830623626708984375
        },
        "time_window": {
            "start_ts": "2026-09-05T18:04:00+00:00",
            "end_ts": "2026-09-05T23:43:03+00:00"
        },
        "searched_at": "2026-09-06T01:00:01.407192+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 254.5,
    "avg_distance_m": 257.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 339.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 20343,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T18:04:00+00:00",
        "end": "2026-09-05T23:43:03+00:00"
    },
    "points_count": {
        "vessel_a": 38,
        "vessel_b": 38
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 254m, avg 257m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 339 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 (FLAGMAN and ZAPRAVSHCHIK 05) maintained close proximity (min 254m, avg 257m) for 339 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": 46.6246131999999988693161867558956146240234375,
            "lon": 142.767641700000012860982678830623626708984375
        },
        "time_window": {
            "start_ts": "2026-09-05T18:04:00+00:00",
            "end_ts": "2026-09-05T23:43:03+00:00"
        },
        "searched_at": "2026-09-06T01:00:04.234035+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": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 260.19999999999998863131622783839702606201171875,
    "avg_distance_m": 262.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 1,
    "duration_minutes": 345.5,
    "overlap_duration_s": 20731,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T18:14:05+00:00",
        "end": "2026-09-05T23:59:36+00:00"
    },
    "points_count": {
        "vessel_a": 130,
        "vessel_b": 130
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 260m, avg 262m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 346 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 (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 260m, avg 262m) for 346 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": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 260.19999999999998863131622783839702606201171875,
    "avg_distance_m": 262.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 1,
    "duration_minutes": 345.5,
    "overlap_duration_s": 20731,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T18:14:05+00:00",
        "end": "2026-09-05T23:59:36+00:00"
    },
    "points_count": {
        "vessel_a": 130,
        "vessel_b": 130
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 260m, avg 262m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 346 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 (AZOV and ZAPRAVSHCHIK 05) maintained close proximity (min 260m, avg 262m) for 346 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",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 394,
    "points_in_zone": 72,
    "first_point": {
        "ts": "2026-09-05T18:12:35+00:00",
        "lat": 46.62514329999999773690433357842266559600830078125,
        "lon": 142.76614829999999756182660348713397979736328125
    },
    "last_point": {
        "ts": "2026-09-06T00:46:37+00:00",
        "lat": 46.62514999999999787405613460578024387359619140625,
        "lon": 142.7661616999999978361302055418491363525390625
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 394,
    "points_in_zone": 72,
    "first_point": {
        "ts": "2026-09-05T18:12:35+00:00",
        "lat": 46.62514329999999773690433357842266559600830078125,
        "lon": 142.76614829999999756182660348713397979736328125
    },
    "last_point": {
        "ts": "2026-09-06T00:46:37+00:00",
        "lat": 46.62514999999999787405613460578024387359619140625,
        "lon": 142.7661616999999978361302055418491363525390625
    }
}

{
    "radius_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 394,
    "points": 72,
    "centroid": {
        "lat": 46.6251498805555542048750794492661952972412109375,
        "lon": 142.766153748611060336770606227219104766845703125
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    "bbox": {
        "min_lat": 46.625135000000000218278728425502777099609375,
        "min_lon": 142.76614169999999148785718716681003570556640625,
        "max_lat": 46.62515830000000249810909735970199108123779296875,
        "max_lon": 142.766171700000001010266714729368686676025390625
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "radius_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 394,
    "points": 72,
    "centroid": {
        "lat": 46.6251498805555542048750794492661952972412109375,
        "lon": 142.766153748611060336770606227219104766845703125
    },
    "bbox": {
        "min_lat": 46.625135000000000218278728425502777099609375,
        "min_lon": 142.76614169999999148785718716681003570556640625,
        "max_lat": 46.62515830000000249810909735970199108123779296875,
        "max_lon": 142.766171700000001010266714729368686676025390625
    },
    "zone_id": "russia_sakhalin_south"
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 254.19999999999998863131622783839702606201171875,
    "avg_distance_m": 257.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 381.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 22864,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T17:21:59+00:00",
        "end": "2026-09-05T23:43:03+00:00"
    },
    "points_count": {
        "vessel_a": 44,
        "vessel_b": 44
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 254m, avg 257m"
            },
            "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 \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 (FLAGMAN and ZAPRAVSHCHIK 05) maintained close proximity (min 254m, avg 257m) 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."
    }
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "min_distance_m": 254.19999999999998863131622783839702606201171875,
    "avg_distance_m": 257.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 381.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 22864,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-05T17:21:59+00:00",
        "end": "2026-09-05T23:43:03+00:00"
    },
    "points_count": {
        "vessel_a": 44,
        "vessel_b": 44
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 254m, avg 257m"
            },
            "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 \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 (FLAGMAN and ZAPRAVSHCHIK 05) maintained close proximity (min 254m, avg 257m) 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."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 46.6246131999999988693161867558956146240234375,
            "lon": 142.767641499999996312908479012548923492431640625
        },
        "time_window": {
            "start_ts": "2026-09-05T17:21:59+00:00",
            "end_ts": "2026-09-05T23:43:03+00:00"
        },
        "searched_at": "2026-09-06T00:00:01.371640+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}