AZOV

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        "start": "2026-09-09T05:53:16+00:00",
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    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 7m, avg 13m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 388 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
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            "distance_consistency": {
                "score": 15,
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                "detail": "Distance variance \u00b12m"
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                "score": 5,
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                "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 (FLAGMAN and AZOV) maintained close proximity (min 7m, avg 13m) for 388 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,
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        "mmsi": 273456730,
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    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
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                "detail": "Min distance 7m, avg 13m"
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                "detail": "Duration 388 minutes"
            },
            "speed_stability": {
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                "detail": "both nearly stationary; very stable speeds"
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                "score": 5,
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        },
        "summary": "High-confidence STS candidate. Two tankers (FLAGMAN and AZOV) maintained close proximity (min 7m, avg 13m) for 388 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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{
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        "name": "AZOV",
        "flag": "Russia"
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        "start": "2026-09-09T04:03:39+00:00",
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    "points_count": {
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    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 72,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 11m, avg 20m"
            },
            "duration": {
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                "max": 25,
                "detail": "Duration 34 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b121m"
            },
            "isolation": {
                "score": 5,
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                "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 FLAGMAN) maintained close proximity (min 11m, avg 20m) for 34 minutes. Both vessels were slow-moving (avg speeds 0.1 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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            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
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    "time_window": {
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    "points_count": {
        "vessel_a": 15,
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    "zone_id": "russia_sakhalin_south",
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    "score": {
        "value": 72,
        "components": {
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                "score": 25,
                "max": 25,
                "detail": "Min distance 11m, avg 20m"
            },
            "duration": {
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                "max": 25,
                "detail": "Duration 34 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
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                "detail": "Distance variance \u00b121m"
            },
            "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 FLAGMAN) maintained close proximity (min 11m, avg 20m) for 34 minutes. Both vessels were slow-moving (avg speeds 0.1 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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            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1256793_thumbnail_20260909104513.png",
            "source": "copernicus_dataspace"
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        "notes": "Preview available for manual review"
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}

{
    "vessel_a": {
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        "name": "FLAGMAN",
        "flag": "Russia"
    },
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    "points_count": {
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    "zone_id": "russia_prigorodnoye",
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        "value": 90,
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                "detail": "Min distance 10m, avg 17m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 90 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b119m"
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            "isolation": {
                "score": 5,
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            },
            "context": {
                "score": 5,
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                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
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        "summary": "High-confidence STS candidate. Two tankers (FLAGMAN and AZOV) maintained close proximity (min 10m, avg 17m) for 90 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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            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1256166_thumbnail_20260909094506.png",
            "source": "copernicus_dataspace"
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        "notes": "Preview available for manual review"
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}

{
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    "zone_id": "russia_sakhalin_south",
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        "value": 90,
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            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 10m, avg 17m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 90 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b119m"
            },
            "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 AZOV) maintained close proximity (min 10m, avg 17m) for 90 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": 142.769095700000008264396456070244312286376953125
        },
        "time_window": {
            "start_ts": "2026-09-09T03:11:14+00:00",
            "end_ts": "2026-09-09T04:41:15+00:00"
        },
        "searched_at": "2026-09-09T09:45:07.929793+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260909T081918_20260909T081954_009368_012A26_47F0_COG",
        "scene_datetime": "2026-09-09T08:19:18.775973Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": 141.22908000000001038642949424684047698974609375,
            "min_lat": 44.51325200000000137379174702800810337066650390625,
            "max_lon": 144.993332000000009429641067981719970703125,
            "max_lat": 47.07350900000000137879396788775920867919921875
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1256167_thumbnail_20260909094511.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1256167_thumbnail_20260909094511.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "min_distance_m": 10,
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        "vessel_a": {
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    "time_window": {
        "start": "2026-09-09T02:47:14+00:00",
        "end": "2026-09-09T04:41:15+00:00"
    },
    "points_count": {
        "vessel_a": 19,
        "vessel_b": 19
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    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 10m, avg 16m"
            },
            "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 \u00b118m"
            },
            "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 AZOV) maintained close proximity (min 10m, avg 16m) 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."
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}

{
    "vessel_a": {
        "mmsi": 273443820,
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                "max": 25,
                "detail": "Min distance 10m, avg 16m"
            },
            "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 \u00b118m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
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                "score": 5,
                "max": 5,
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            }
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    }
}

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    "zone_id": "russia_sakhalin_south",
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{
    "zone_id": "russia_prigorodnoye",
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    "radius_m": 767.700000000000045474735088646411895751953125,
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    "zone_id": "russia_prigorodnoye",
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    "zone_id": "russia_sakhalin_south",
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{
    "radius_m": 767.8999999999999772626324556767940521240234375,
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    "radius_m": 767.8999999999999772626324556767940521240234375,
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{
    "vessel_a": {
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        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
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    "overlap_duration_s": 4302,
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    "speed_summary": {
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            "max_sog": 0
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        "vessel_b": {
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    },
    "time_window": {
        "start": "2026-09-09T00:05:46+00:00",
        "end": "2026-09-09T01:17:28+00:00"
    },
    "points_count": {
        "vessel_a": 25,
        "vessel_b": 25
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    "zone_id": "russia_prigorodnoye",
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    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 10m, avg 13m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 72 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 10m, avg 13m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
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            "end_ts": "2026-09-09T01:17:28+00:00"
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        "searched_at": "2026-09-09T06:45:01.207098+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
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        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
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    },
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        "end": "2026-09-09T01:17:28+00:00"
    },
    "points_count": {
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                "score": 25,
                "max": 25,
                "detail": "Min distance 10m, avg 13m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 72 minutes"
            },
            "speed_stability": {
                "score": 20,
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                "detail": "both nearly stationary; very stable speeds"
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            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
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        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 10m, avg 13m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Sakhalin South Approach, a known STS activity area."
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            "end_ts": "2026-09-09T01:17:28+00:00"
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        "searched_at": "2026-09-09T06:45:03.648036+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
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{
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    "bbox": {
        "min_lat": 46.620616699999999354986357502639293670654296875,
        "min_lon": 142.75821669999999130595824681222438812255859375,
        "max_lat": 46.625816700000001446824171580374240875244140625,
        "max_lon": 142.76915669999999636274878866970539093017578125
    },
    "zone_id": "russia_sakhalin_south"
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 397.69999999999998863131622783839702606201171875,
    "points_in_zone": 150,
    "first_point": {
        "ts": "2026-09-08T23:52:07+00:00",
        "lat": 46.62397829999999743222360848449170589447021484375,
        "lon": 142.769146699999993188612279482185840606689453125
    },
    "last_point": {
        "ts": "2026-09-09T06:29:47+00:00",
        "lat": 46.62398329999999901929186307825148105621337890625,
        "lon": 142.769116700000012087912182323634624481201171875
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 397.69999999999998863131622783839702606201171875,
    "points_in_zone": 150,
    "first_point": {
        "ts": "2026-09-08T23:52:07+00:00",
        "lat": 46.62397829999999743222360848449170589447021484375,
        "lon": 142.769146699999993188612279482185840606689453125
    },
    "last_point": {
        "ts": "2026-09-09T06:29:47+00:00",
        "lat": 46.62398329999999901929186307825148105621337890625,
        "lon": 142.769116700000012087912182323634624481201171875
    }
}

{
    "radius_m": 768.200000000000045474735088646411895751953125,
    "duration_minutes": 397.69999999999998863131622783839702606201171875,
    "points": 150,
    "centroid": {
        "lat": 46.62362224266666288485794211737811565399169921875,
        "lon": 142.767651890000053072071750648319721221923828125
    },
    "bbox": {
        "min_lat": 46.620616699999999354986357502639293670654296875,
        "min_lon": 142.75821669999999130595824681222438812255859375,
        "max_lat": 46.625816700000001446824171580374240875244140625,
        "max_lon": 142.76915669999999636274878866970539093017578125
    },
    "zone_id": "russia_prigorodnoye"
}

{
    "radius_m": 768.200000000000045474735088646411895751953125,
    "duration_minutes": 397.69999999999998863131622783839702606201171875,
    "points": 150,
    "centroid": {
        "lat": 46.62362224266666288485794211737811565399169921875,
        "lon": 142.767651890000053072071750648319721221923828125
    },
    "bbox": {
        "min_lat": 46.620616699999999354986357502639293670654296875,
        "min_lon": 142.75821669999999130595824681222438812255859375,
        "max_lat": 46.625816700000001446824171580374240875244140625,
        "max_lon": 142.76915669999999636274878866970539093017578125
    },
    "zone_id": "russia_sakhalin_south"
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 7,
    "avg_distance_m": 12.699999999999999289457264239899814128875732421875,
    "distance_consistency_m": 2.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 135.19999999999998863131622783839702606201171875,
    "overlap_duration_s": 8112,
    "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": "2026-09-08T23:02:16+00:00",
        "end": "2026-09-09T01:17:28+00:00"
    },
    "points_count": {
        "vessel_a": 51,
        "vessel_b": 51
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 7m, avg 13m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 135 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 7m, avg 13m) for 135 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": 46.62403189999999852943801670335233211517333984375,
            "lon": 142.769124400000009700306691229343414306640625
        },
        "time_window": {
            "start_ts": "2026-09-08T23:02:16+00:00",
            "end_ts": "2026-09-09T01:17:28+00:00"
        },
        "searched_at": "2026-09-09T05:45:01.829693+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": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 7,
    "avg_distance_m": 12.699999999999999289457264239899814128875732421875,
    "distance_consistency_m": 2.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 135.19999999999998863131622783839702606201171875,
    "overlap_duration_s": 8112,
    "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": "2026-09-08T23:02:16+00:00",
        "end": "2026-09-09T01:17:28+00:00"
    },
    "points_count": {
        "vessel_a": 51,
        "vessel_b": 51
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 7m, avg 13m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 135 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 7m, avg 13m) for 135 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": 46.62403189999999852943801670335233211517333984375,
            "lon": 142.769124400000009700306691229343414306640625
        },
        "time_window": {
            "start_ts": "2026-09-08T23:02:16+00:00",
            "end_ts": "2026-09-09T01:17:28+00:00"
        },
        "searched_at": "2026-09-09T05:45:04.399423+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "min_distance_m": 262.1000000000000227373675443232059478759765625,
    "avg_distance_m": 263.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 0.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 218,
    "overlap_duration_s": 13081,
    "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": "2026-09-08T22:58:52+00:00",
        "end": "2026-09-09T02:36:53+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 262m, avg 263m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 218 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 (ZAPRAVSHCHIK 05 and AZOV) maintained close proximity (min 262m, avg 263m) for 218 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": 273439180,
        "imo": 8930744,
        "name": "ZAPRAVSHCHIK 05",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "min_distance_m": 262.1000000000000227373675443232059478759765625,
    "avg_distance_m": 263.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 0.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 218,
    "overlap_duration_s": 13081,
    "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": "2026-09-08T22:58:52+00:00",
        "end": "2026-09-09T02:36:53+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 262m, avg 263m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 218 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 (ZAPRAVSHCHIK 05 and AZOV) maintained close proximity (min 262m, avg 263m) for 218 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": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 7,
    "avg_distance_m": 12,
    "distance_consistency_m": 2.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 191.599999999999994315658113919198513031005859375,
    "overlap_duration_s": 11498,
    "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": "2026-09-08T22:05:50+00:00",
        "end": "2026-09-09T01:17:28+00:00"
    },
    "points_count": {
        "vessel_a": 72,
        "vessel_b": 72
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 7m, avg 12m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 192 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 7m, avg 12m) for 192 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": 46.62403259999999960427885525859892368316650390625,
            "lon": 142.769124000000005025867721997201442718505859375
        },
        "time_window": {
            "start_ts": "2026-09-08T22:05:50+00:00",
            "end_ts": "2026-09-09T01:17:28+00:00"
        },
        "searched_at": "2026-09-09T04:45:04.061180+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": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 7,
    "avg_distance_m": 12,
    "distance_consistency_m": 2.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 191.599999999999994315658113919198513031005859375,
    "overlap_duration_s": 11498,
    "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": "2026-09-08T22:05:50+00:00",
        "end": "2026-09-09T01:17:28+00:00"
    },
    "points_count": {
        "vessel_a": 72,
        "vessel_b": 72
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 7m, avg 12m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 192 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 7m, avg 12m) for 192 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": 46.62403259999999960427885525859892368316650390625,
            "lon": 142.769124000000005025867721997201442718505859375
        },
        "time_window": {
            "start_ts": "2026-09-08T22:05:50+00:00",
            "end_ts": "2026-09-09T01:17:28+00:00"
        },
        "searched_at": "2026-09-09T04:45:07.409010+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 396.1000000000000227373675443232059478759765625,
    "points_in_zone": 150,
    "first_point": {
        "ts": "2026-09-08T22:52:36+00:00",
        "lat": 46.62398329999999901929186307825148105621337890625,
        "lon": 142.769121699999999464125721715390682220458984375
    },
    "last_point": {
        "ts": "2026-09-09T05:28:41+00:00",
        "lat": 46.62063330000000149766492540948092937469482421875,
        "lon": 142.759399999999999408828443847596645355224609375
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 396.1000000000000227373675443232059478759765625,
    "points_in_zone": 150,
    "first_point": {
        "ts": "2026-09-08T22:52:36+00:00",
        "lat": 46.62398329999999901929186307825148105621337890625,
        "lon": 142.769121699999999464125721715390682220458984375
    },
    "last_point": {
        "ts": "2026-09-09T05:28:41+00:00",
        "lat": 46.62063330000000149766492540948092937469482421875,
        "lon": 142.759399999999999408828443847596645355224609375
    }
}

{
    "radius_m": 730.8999999999999772626324556767940521240234375,
    "duration_minutes": 396.1000000000000227373675443232059478759765625,
    "points": 150,
    "centroid": {
        "lat": 46.62363269466668924678742769174277782440185546875,
        "lon": 142.76789264666666667835670523345470428466796875
    },
    "bbox": {
        "min_lat": 46.620616699999999354986357502639293670654296875,
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{
    "radius_m": 730.8999999999999772626324556767940521240234375,
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{
    "vessel_a": {
        "mmsi": 273456730,
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        "mmsi": 273443820,
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    },
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        "start": "2026-09-08T21:57:31+00:00",
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        "vessel_a": 75,
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                "score": 25,
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                "score": 15,
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                "score": 5,
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                "score": 5,
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        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 7m, avg 12m) for 200 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_a": {
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            },
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                "detail": "both nearly stationary; very stable speeds"
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{
    "vessel_a": {
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            },
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                "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 FLAGMAN) maintained close proximity (min 8m, avg 11m) for 74 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": 46.62403590000000264126356341876089572906494140625,
            "lon": 142.7691207999999960520653985440731048583984375
        },
        "time_window": {
            "start_ts": "2026-09-08T09:00:53+00:00",
            "end_ts": "2026-09-08T10:14:57+00:00"
        },
        "searched_at": "2026-09-08T15:45:04.717295+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": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 7.9000000000000003552713678800500929355621337890625,
    "avg_distance_m": 11.300000000000000710542735760100185871124267578125,
    "distance_consistency_m": 1.3000000000000000444089209850062616169452667236328125,
    "duration_minutes": 74.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 4444,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-08T09:00:53+00:00",
        "end": "2026-09-08T10:14:57+00:00"
    },
    "points_count": {
        "vessel_a": 30,
        "vessel_b": 30
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 8m, avg 11m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 74 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 FLAGMAN) maintained close proximity (min 8m, avg 11m) for 74 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": 46.62403590000000264126356341876089572906494140625,
            "lon": 142.7691207999999960520653985440731048583984375
        },
        "time_window": {
            "start_ts": "2026-09-08T09:00:53+00:00",
            "end_ts": "2026-09-08T10:14:57+00:00"
        },
        "searched_at": "2026-09-08T15:45:07.163672+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": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 7.9000000000000003552713678800500929355621337890625,
    "avg_distance_m": 11.699999999999999289457264239899814128875732421875,
    "distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 130.69999999999998863131622783839702606201171875,
    "overlap_duration_s": 7841,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-08T08:04:16+00:00",
        "end": "2026-09-08T10:14:57+00:00"
    },
    "points_count": {
        "vessel_a": 50,
        "vessel_b": 50
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 8m, avg 12m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 131 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 8m, avg 12m) for 131 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": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 7.9000000000000003552713678800500929355621337890625,
    "avg_distance_m": 11.699999999999999289457264239899814128875732421875,
    "distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 130.69999999999998863131622783839702606201171875,
    "overlap_duration_s": 7841,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-08T08:04:16+00:00",
        "end": "2026-09-08T10:14:57+00:00"
    },
    "points_count": {
        "vessel_a": 50,
        "vessel_b": 50
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 8m, avg 12m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 131 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 8m, avg 12m) for 131 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_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 232,
    "points_in_zone": 87,
    "first_point": {
        "ts": "2026-09-08T08:02:15+00:00",
        "lat": 46.62399500000000074351191869936883449554443359375,
        "lon": 142.76910670000000891377567313611507415771484375
    },
    "last_point": {
        "ts": "2026-09-08T11:54:14+00:00",
        "lat": 46.62395670000000080790414358489215373992919921875,
        "lon": 142.76909169999998994171619415283203125
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 232,
    "points_in_zone": 87,
    "first_point": {
        "ts": "2026-09-08T08:02:15+00:00",
        "lat": 46.62399500000000074351191869936883449554443359375,
        "lon": 142.76910670000000891377567313611507415771484375
    },
    "last_point": {
        "ts": "2026-09-08T11:54:14+00:00",
        "lat": 46.62395670000000080790414358489215373992919921875,
        "lon": 142.76909169999998994171619415283203125
    }
}

{
    "radius_m": 68,
    "duration_minutes": 232,
    "points": 87,
    "centroid": {
        "lat": 46.62397231724133916941354982554912567138671875,
        "lon": 142.76912783103449555710540153086185455322265625
    },
    "bbox": {
        "min_lat": 46.62337670000000144909790833480656147003173828125,
        "min_lon": 142.768866699999989577918313443660736083984375,
        "max_lat": 46.624331699999999045758158899843692779541015625,
        "max_lon": 142.769329999999996516635292209684848785400390625
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    "zone_id": "russia_prigorodnoye"
}

{
    "radius_m": 68,
    "duration_minutes": 232,
    "points": 87,
    "centroid": {
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        "lon": 142.76912783103449555710540153086185455322265625
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        "max_lon": 142.769329999999996516635292209684848785400390625
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    "zone_id": "russia_sakhalin_south"
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "min_distance_m": 9.5999999999999996447286321199499070644378662109375,
    "avg_distance_m": 11.5999999999999996447286321199499070644378662109375,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 237.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 14223,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
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            "max_sog": 0
        },
        "vessel_b": {
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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    },
    "time_window": {
        "start": "2026-09-08T07:15:37+00:00",
        "end": "2026-09-08T11:12:40+00:00"
    },
    "points_count": {
        "vessel_a": 25,
        "vessel_b": 25
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 10m, avg 12m"
            },
            "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 (FLAGMAN and AZOV) maintained close proximity (min 10m, avg 12m) 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."
    }
}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "min_distance_m": 9.5999999999999996447286321199499070644378662109375,
    "avg_distance_m": 11.5999999999999996447286321199499070644378662109375,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 237.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 14223,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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    },
    "time_window": {
        "start": "2026-09-08T07:15:37+00:00",
        "end": "2026-09-08T11:12:40+00:00"
    },
    "points_count": {
        "vessel_a": 25,
        "vessel_b": 25
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 10m, avg 12m"
            },
            "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 (FLAGMAN and AZOV) maintained close proximity (min 10m, avg 12m) 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."
    }
}

{
    "zone_id": "russia_prigorodnoye",
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    "first_point": {
        "ts": "2026-09-08T07:02:55+00:00",
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    "last_point": {
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        "lon": 142.76909169999998994171619415283203125
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}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
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    "points_in_zone": 107,
    "first_point": {
        "ts": "2026-09-08T07:02:55+00:00",
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{
    "radius_m": 68.2000000000000028421709430404007434844970703125,
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{
    "radius_m": 68.2000000000000028421709430404007434844970703125,
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}

{
    "vessel_a": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
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    "min_distance_m": 9.5999999999999996447286321199499070644378662109375,
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    "time_window": {
        "start": "2026-09-08T06:42:37+00:00",
        "end": "2026-09-08T11:12:40+00:00"
    },
    "points_count": {
        "vessel_a": 28,
        "vessel_b": 28
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 10m, avg 12m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 270 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 AZOV) maintained close proximity (min 10m, avg 12m) for 270 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": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "min_distance_m": 9.5999999999999996447286321199499070644378662109375,
    "avg_distance_m": 11.5999999999999996447286321199499070644378662109375,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 270.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 16203,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
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            "max_sog": 0
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        "vessel_b": {
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    },
    "time_window": {
        "start": "2026-09-08T06:42:37+00:00",
        "end": "2026-09-08T11:12:40+00:00"
    },
    "points_count": {
        "vessel_a": 28,
        "vessel_b": 28
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 10m, avg 12m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 270 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 AZOV) maintained close proximity (min 10m, avg 12m) for 270 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_sakhalin_south",
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}

{
    "zone_id": "russia_prigorodnoye",
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    "radius_m": 68.2999999999999971578290569595992565155029296875,
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{
    "radius_m": 68.2999999999999971578290569595992565155029296875,
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{
    "zone_id": "russia_prigorodnoye",
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{
    "zone_id": "russia_sakhalin_south",
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{
    "radius_m": 68.400000000000005684341886080801486968994140625,
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{
    "radius_m": 68.400000000000005684341886080801486968994140625,
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{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 8.699999999999999289457264239899814128875732421875,
    "avg_distance_m": 11.5,
    "distance_consistency_m": 1.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 176.5,
    "overlap_duration_s": 10592,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-08T05:01:44+00:00",
        "end": "2026-09-08T07:58:16+00:00"
    },
    "points_count": {
        "vessel_a": 63,
        "vessel_b": 63
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 9m, avg 12m"
            },
            "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 FLAGMAN) maintained close proximity (min 9m, avg 12m) 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": {
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            "lon": 142.76912210000000413856469094753265380859375
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        "time_window": {
            "start_ts": "2026-09-08T05:01:44+00:00",
            "end_ts": "2026-09-08T07:58:16+00:00"
        },
        "searched_at": "2026-09-08T11:45:04.838442+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": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
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    "speed_a_std": 0.0200000000000000004163336342344337026588618755340576171875,
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    "speed_b_std": 0,
    "speed_summary": {
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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    },
    "time_window": {
        "start": "2026-09-08T05:01:44+00:00",
        "end": "2026-09-08T07:58:16+00:00"
    },
    "points_count": {
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        "vessel_b": 63
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    "zone_id": "russia_sakhalin_south",
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    "score": {
        "value": 95,
        "components": {
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                "score": 25,
                "max": 25,
                "detail": "Min distance 9m, avg 12m"
            },
            "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 FLAGMAN) maintained close proximity (min 9m, avg 12m) 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": {
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        "time_window": {
            "start_ts": "2026-09-08T05:01:44+00:00",
            "end_ts": "2026-09-08T07:58:16+00:00"
        },
        "searched_at": "2026-09-08T11:45:09.808219+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
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        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
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    "overlap_duration_s": 14170,
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        "vessel_b": {
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            "max_sog": 0
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    },
    "time_window": {
        "start": "2026-09-08T04:02:06+00:00",
        "end": "2026-09-08T07:58:16+00:00"
    },
    "points_count": {
        "vessel_a": 84,
        "vessel_b": 84
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 9m, avg 12m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 236 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 9m, avg 12m) for 236 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Prigorodnoye\/Sakhalin LNG, a known STS activity area."
    },
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            "end_ts": "2026-09-08T07:58:16+00:00"
        },
        "searched_at": "2026-09-08T10:45:01.815000+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
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{
    "zone_id": "russia_sakhalin_south",
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{
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{
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        "min_lat": 46.6236533000000008541974239051342010498046875,
        "min_lon": 142.7690483000000085667124949395656585693359375,
        "max_lat": 46.6240082999999998492057784460484981536865234375,
        "max_lon": 142.76929499999999961801222525537014007568359375
    },
    "zone_id": "russia_sakhalin_south"
}

{
    "vessel_a": {
        "mmsi": 273456730,
        "imo": 9084401,
        "name": "AZOV",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 8.699999999999999289457264239899814128875732421875,
    "avg_distance_m": 11.9000000000000003552713678800500929355621337890625,
    "distance_consistency_m": 1.5,
    "duration_minutes": 236.19999999999998863131622783839702606201171875,
    "overlap_duration_s": 14170,
    "speed_a_avg": 0,
    "speed_a_std": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-08T04:02:06+00:00",
        "end": "2026-09-08T07:58:16+00:00"
    },
    "points_count": {
        "vessel_a": 84,
        "vessel_b": 84
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 9m, avg 12m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 236 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 9m, avg 12m) for 236 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": 46.62403470000000282880137092433869838714599609375,
            "lon": 142.76912490000000843792804516851902008056640625
        },
        "time_window": {
            "start_ts": "2026-09-08T04:02:06+00:00",
            "end_ts": "2026-09-08T07:58:16+00:00"
        },
        "searched_at": "2026-09-08T10:45:04.712070+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": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 8.300000000000000710542735760100185871124267578125,
    "avg_distance_m": 11.800000000000000710542735760100185871124267578125,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 292.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 17568,
    "speed_a_avg": 0,
    "speed_a_std": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-08T03:05:28+00:00",
        "end": "2026-09-08T07:58:16+00:00"
    },
    "points_count": {
        "vessel_a": 105,
        "vessel_b": 105
    },
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 8m, avg 12m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 293 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Prigorodnoye\/Sakhalin LNG"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 8m, avg 12m) for 293 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": 46.6240341000000029225702746771275997161865234375,
            "lon": 142.769124699999991889853845350444316864013671875
        },
        "time_window": {
            "start_ts": "2026-09-08T03:05:28+00:00",
            "end_ts": "2026-09-08T07:58:16+00:00"
        },
        "searched_at": "2026-09-08T10:00:01.573034+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": 273443820,
        "imo": 8135215,
        "name": "FLAGMAN",
        "flag": "Russia"
    },
    "min_distance_m": 8.300000000000000710542735760100185871124267578125,
    "avg_distance_m": 11.800000000000000710542735760100185871124267578125,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 292.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 17568,
    "speed_a_avg": 0,
    "speed_a_std": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-08T03:05:28+00:00",
        "end": "2026-09-08T07:58:16+00:00"
    },
    "points_count": {
        "vessel_a": 105,
        "vessel_b": 105
    },
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 8m, avg 12m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 293 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Sakhalin South Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (AZOV and FLAGMAN) maintained close proximity (min 8m, avg 12m) for 293 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": 46.6240341000000029225702746771275997161865234375,
            "lon": 142.769124699999991889853845350444316864013671875
        },
        "time_window": {
            "start_ts": "2026-09-08T03:05:28+00:00",
            "end_ts": "2026-09-08T07:58:16+00:00"
        },
        "searched_at": "2026-09-08T10:00:06.727255+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "russia_prigorodnoye",
    "zone_name": "Prigorodnoye\/Sakhalin LNG",
    "dwell_minutes": 394.8999999999999772626324556767940521240234375,
    "points_in_zone": 143,
    "first_point": {
        "ts": "2026-09-08T03:52:56+00:00",
        "lat": 46.6239800000000030877345125190913677215576171875,
        "lon": 142.769129999999989877323969267308712005615234375
    },
    "last_point": {
        "ts": "2026-09-08T10:27:51+00:00",
        "lat": 46.6239800000000030877345125190913677215576171875,
        "lon": 142.76913500000000567524693906307220458984375
    }
}

{
    "zone_id": "russia_sakhalin_south",
    "zone_name": "Sakhalin South Approach",
    "dwell_minutes": 394.8999999999999772626324556767940521240234375,
    "points_in_zone": 143,
    "first_point": {
        "ts": "2026-09-08T03:52:56+00:00",
        "lat": 46.6239800000000030877345125190913677215576171875,
        "lon": 142.769129999999989877323969267308712005615234375
    },
    "last_point": {
        "ts": "2026-09-08T10:27:51+00:00",
        "lat": 46.6239800000000030877345125190913677215576171875,
        "lon": 142.76913500000000567524693906307220458984375
    }
}