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                "detail": "Isolation data not available"
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    "overlap_duration_s": 11340,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
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            "max_sog": 0
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        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
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    },
    "time_window": {
        "start": "2026-09-14T14:22:17+00:00",
        "end": "2026-09-14T17:31:17+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
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    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 54m, avg 57m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 189 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: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TM HAI HA 568 and SPHERE) maintained close proximity (min 54m, avg 57m) for 189 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 Eastern Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
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            "end_ts": "2026-09-14T17:31:17+00:00"
        },
        "searched_at": "2026-09-14T21:00:01.495237+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
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                "max": 25,
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            },
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            },
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{
    "zone_id": "discovered_167",
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    "radius_m": 38.89999999999999857891452847979962825775146484375,
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{
    "vessel_a": {
        "mmsi": 273122220,
        "imo": 9323974,
        "name": "SPHERE",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 574004200,
        "imo": 9274082,
        "name": "TM HAI HA 568",
        "flag": "VIETNAM"
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    "avg_distance_m": 41.60000000000000142108547152020037174224853515625,
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    "duration_minutes": 38.60000000000000142108547152020037174224853515625,
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    "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": "2026-09-13T15:33:32+00:00",
        "end": "2026-09-13T16:12:11+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
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    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 33m, avg 42m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 39 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b112m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SPHERE and TM HAI HA 568) maintained close proximity (min 33m, avg 42m) for 39 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 Eastern Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
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            "end_ts": "2026-09-13T16:12:11+00:00"
        },
        "searched_at": "2026-09-13T17:45:06.519906+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "discovered_167",
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    "radius_m": 39.7999999999999971578290569595992565155029296875,
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{
    "zone_id": "discovered_167",
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}

{
    "vessel_a": {
        "mmsi": 273122220,
        "imo": 9323974,
        "name": "SPHERE",
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    },
    "vessel_b": {
        "mmsi": 574004200,
        "imo": 9274082,
        "name": "TM HAI HA 568",
        "flag": "VIETNAM"
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    "distance_consistency_m": 2.79999999999999982236431605997495353221893310546875,
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    "overlap_duration_s": 1800,
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            "max_sog": 0
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    },
    "time_window": {
        "start": "2026-09-13T14:12:28+00:00",
        "end": "2026-09-13T14:42:28+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
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                "max": 25,
                "detail": "Min distance 47m, avg 52m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 30 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SPHERE and TM HAI HA 568) maintained close proximity (min 47m, avg 52m) for 30 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 Eastern Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
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            "end_ts": "2026-09-13T14:42:28+00:00"
        },
        "searched_at": "2026-09-13T20:45:01.615528+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
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}

{
    "radius_m": 42.39999999999999857891452847979962825775146484375,
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{
    "vessel_a": {
        "mmsi": 574004200,
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        "name": "TM HAI HA 568",
        "flag": "VIETNAM"
    },
    "vessel_b": {
        "mmsi": 273122220,
        "imo": 9323974,
        "name": "SPHERE",
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    "min_distance_m": 36.89999999999999857891452847979962825775146484375,
    "avg_distance_m": 53,
    "distance_consistency_m": 6,
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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": "2026-09-13T13:07:17+00:00",
        "end": "2026-09-13T16:07:13+00:00"
    },
    "points_count": {
        "vessel_a": 11,
        "vessel_b": 11
    },
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
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                "score": 25,
                "max": 25,
                "detail": "Min distance 37m, avg 53m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 180 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b16m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TM HAI HA 568 and SPHERE) maintained close proximity (min 37m, avg 53m) for 180 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 Eastern Black Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_167",
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{
    "radius_m": 32.2000000000000028421709430404007434844970703125,
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{
    "zone_id": "discovered_167",
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{
    "radius_m": 49.2000000000000028421709430404007434844970703125,
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{
    "vessel_a": {
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        "flag": "VIETNAM"
    },
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        "imo": 9323974,
        "name": "SPHERE",
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    "duration_minutes": 303.8999999999999772626324556767940521240234375,
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    "speed_b_avg": 0.190000000000000002220446049250313080847263336181640625,
    "speed_b_std": 0.40000000000000002220446049250313080847263336181640625,
    "speed_summary": {
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    },
    "time_window": {
        "start": "2026-09-13T11:03:20+00:00",
        "end": "2026-09-13T16:07:13+00:00"
    },
    "points_count": {
        "vessel_a": 18,
        "vessel_b": 18
    },
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 92,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 28m, avg 56m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 304 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b115m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TM HAI HA 568 and SPHERE) maintained close proximity (min 28m, avg 56m) for 304 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Black Sea Surveillance Zone, a known STS activity area."
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            "end_ts": "2026-09-13T16:07:13+00:00"
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        "searched_at": "2026-09-13T17:00:01.319888+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "radius_m": 72,
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{
    "zone_id": "discovered_167",
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    "first_point": {
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{
    "radius_m": 827.5,
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{
    "zone_id": "discovered_167",
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    "last_point": {
        "ts": "2026-09-13T17:23:20+00:00",
        "lat": 31.50722999999999984765963745303452014923095703125,
        "lon": 32.38580499999999773308445583097636699676513671875
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}

{
    "vessel_a": {
        "mmsi": 574004200,
        "imo": 9274082,
        "name": "TM HAI HA 568",
        "flag": "VIETNAM"
    },
    "vessel_b": {
        "mmsi": 273122220,
        "imo": 9323974,
        "name": "SPHERE",
        "flag": "RUSSIA"
    },
    "min_distance_m": 27.699999999999999289457264239899814128875732421875,
    "avg_distance_m": 60,
    "distance_consistency_m": 18.300000000000000710542735760100185871124267578125,
    "duration_minutes": 346.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 20806,
    "speed_a_avg": 0.330000000000000015543122344752191565930843353271484375,
    "speed_a_std": 0.60999999999999998667732370449812151491641998291015625,
    "speed_b_avg": 0.38000000000000000444089209850062616169452667236328125,
    "speed_b_std": 0.61999999999999999555910790149937383830547332763671875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.330000000000000015543122344752191565930843353271484375,
            "max_sog": 1.8000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0.38000000000000000444089209850062616169452667236328125,
            "max_sog": 2
        }
    },
    "time_window": {
        "start": "2026-09-13T09:53:40+00:00",
        "end": "2026-09-13T15:40:26+00:00"
    },
    "points_count": {
        "vessel_a": 18,
        "vessel_b": 18
    },
    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 89,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 28m, avg 60m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 347 minutes"
            },
            "speed_stability": {
                "score": 14,
                "max": 20,
                "detail": "both nearly stationary; somewhat variable 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: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TM HAI HA 568 and SPHERE) maintained close proximity (min 28m, avg 60m) for 347 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.4 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Black Sea Surveillance Zone, a known STS activity area."
    }
}

{
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    "zone_name": "Eastern Black Sea Surveillance Zone",
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    "points_in_zone": 36,
    "first_point": {
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}

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    "first_point": {
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        "ts": "2026-09-13T15:21:32+00:00",
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}

{
    "zone_id": "discovered_167",
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    "points_in_zone": 43,
    "first_point": {
        "ts": "2026-09-13T07:44:24+00:00",
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}

{
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    "points": 13,
    "centroid": {
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}