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    "time_window": {
        "start": "2026-09-13T17:48:58+00:00",
        "end": "2026-09-13T18:24:23+00:00"
    },
    "points_count": {
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        "vessel_b": 9
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    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 60,
        "components": {
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                "score": 10,
                "max": 25,
                "detail": "Min distance 309m, avg 317m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 35 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: Northern Baltic Sea Surveillance Zone"
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        },
        "summary": "Moderate-confidence STS candidate. Two tankers (STI CAMDEN and ZERVOS) maintained close proximity (min 309m, avg 317m) for 35 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
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            "end_ts": "2026-09-13T18:24:23+00:00"
        },
        "searched_at": "2026-09-13T19:45:01.885753+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
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}

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    "vessel_a": {
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            },
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{
    "zone_id": "discovered_039",
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    "dwell_minutes": 365.3999999999999772626324556767940521240234375,
    "points_in_zone": 8,
    "first_point": {
        "ts": "2026-09-12T19:52:23+00:00",
        "lat": 34.70795170000000240406734519638121128082275390625,
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        "lat": 34.70764170000000348181856679730117321014404296875,
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{
    "zone_id": "discovered_039",
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    "dwell_minutes": 378,
    "points_in_zone": 9,
    "first_point": {
        "ts": "2026-09-12T16:09:39+00:00",
        "lat": 34.70784330000000039717633626423776149749755859375,
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    "last_point": {
        "ts": "2026-09-12T22:27:39+00:00",
        "lat": 34.70763000000000175759851117618381977081298828125,
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{
    "zone_id": "discovered_039",
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    "dwell_minutes": 385.3999999999999772626324556767940521240234375,
    "points_in_zone": 7,
    "first_point": {
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{
    "zone_id": "discovered_039",
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    "dwell_minutes": 383.1000000000000227373675443232059478759765625,
    "points_in_zone": 8,
    "first_point": {
        "ts": "2026-09-12T13:29:15+00:00",
        "lat": 34.70768000000000341742634191177785396575927734375,
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    "last_point": {
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        "lat": 34.70795170000000240406734519638121128082275390625,
        "lon": 33.3199249999999977944753482006490230560302734375
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{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 250.80000000000001136868377216160297393798828125,
    "points_in_zone": 10,
    "first_point": {
        "ts": "2026-09-12T12:05:15+00:00",
        "lat": 34.7076966999999996232872945256531238555908203125,
        "lon": 33.32060830000000350992195308208465576171875
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    "last_point": {
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{
    "radius_m": 39.7000000000000028421709430404007434844970703125,
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        "max_lon": 33.32060830000000350992195308208465576171875
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    "zone_id": "discovered_039"
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{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 274.80000000000001136868377216160297393798828125,
    "points_in_zone": 11,
    "first_point": {
        "ts": "2026-09-12T11:41:20+00:00",
        "lat": 34.7076933000000025231202016584575176239013671875,
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        "lon": 33.320418300000000044747139327228069305419921875
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{
    "radius_m": 40.10000000000000142108547152020037174224853515625,
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        "lon": 33.320556209090909760561771690845489501953125
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    "bbox": {
        "min_lat": 34.70731669999999979836502461694180965423583984375,
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        "max_lon": 33.32060830000000350992195308208465576171875
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    "zone_id": "discovered_039"
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{
    "vessel_a": {
        "mmsi": 538005400,
        "imo": 9688374,
        "name": "STI FULHAM",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636017987,
        "imo": 9434216,
        "name": "ZERVOS",
        "flag": "LIBERIA"
    },
    "min_distance_m": 316.3999999999999772626324556767940521240234375,
    "avg_distance_m": 318,
    "distance_consistency_m": 2.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 30,
    "overlap_duration_s": 1800,
    "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
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-12T11:32:54+00:00",
        "end": "2026-09-12T12:02:54+00:00"
    },
    "points_count": {
        "vessel_a": 2,
        "vessel_b": 2
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 60,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 316m, avg 318m"
            },
            "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 \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (STI FULHAM and ZERVOS) maintained close proximity (min 316m, avg 318m) 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.7086867000000012239979696460068225860595703125,
            "lon": 33.32184290000000004283720045350492000579833984375
        },
        "time_window": {
            "start_ts": "2026-09-12T11:32:54+00:00",
            "end_ts": "2026-09-12T12:02:54+00:00"
        },
        "searched_at": "2026-09-12T12:45:11.231077+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 636017987,
        "imo": 9434216,
        "name": "ZERVOS",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 538005400,
        "imo": 9688374,
        "name": "STI FULHAM",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 315.5,
    "avg_distance_m": 319.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 3.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 111,
    "overlap_duration_s": 6659,
    "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": "2026-09-12T10:14:16+00:00",
        "end": "2026-09-12T12:05:15+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 316m, avg 319m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 111 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: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (ZERVOS and STI FULHAM) maintained close proximity (min 316m, avg 319m) for 111 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
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            "end_ts": "2026-09-12T12:05:15+00:00"
        },
        "searched_at": "2026-09-12T16:45:17.378651+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "discovered_039",
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    "dwell_minutes": 361.80000000000001136868377216160297393798828125,
    "points_in_zone": 14,
    "first_point": {
        "ts": "2026-09-12T10:14:16+00:00",
        "lat": 34.7076483000000024503606255166232585906982421875,
        "lon": 33.3205583000000018500941223464906215667724609375
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    "last_point": {
        "ts": "2026-09-12T16:16:05+00:00",
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{
    "radius_m": 40.10000000000000142108547152020037174224853515625,
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        "max_lon": 33.32060830000000350992195308208465576171875
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}

{
    "vessel_a": {
        "mmsi": 636017987,
        "imo": 9434216,
        "name": "ZERVOS",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 538005400,
        "imo": 9688374,
        "name": "STI FULHAM",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 315.5,
    "avg_distance_m": 319.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 2.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 183.69999999999998863131622783839702606201171875,
    "overlap_duration_s": 11021,
    "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": "2026-09-12T09:01:34+00:00",
        "end": "2026-09-12T12:05:15+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 316m, avg 320m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 184 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: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ZERVOS and STI FULHAM) maintained close proximity (min 316m, avg 320m) for 184 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
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        "time_window": {
            "start_ts": "2026-09-12T09:01:34+00:00",
            "end_ts": "2026-09-12T12:05:15+00:00"
        },
        "searched_at": "2026-09-12T15:15:01.427420+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 391.8999999999999772626324556767940521240234375,
    "points_in_zone": 16,
    "first_point": {
        "ts": "2026-09-12T09:44:14+00:00",
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    "last_point": {
        "ts": "2026-09-12T16:16:05+00:00",
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{
    "radius_m": 40.2000000000000028421709430404007434844970703125,
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{
    "vessel_a": {
        "mmsi": 538005400,
        "imo": 9688374,
        "name": "STI FULHAM",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636017987,
        "imo": 9434216,
        "name": "ZERVOS",
        "flag": "LIBERIA"
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    "min_distance_m": 315.5,
    "avg_distance_m": 320,
    "distance_consistency_m": 2.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 103.7000000000000028421709430404007434844970703125,
    "overlap_duration_s": 6222,
    "speed_a_avg": 0,
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    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-12T08:52:13+00:00",
        "end": "2026-09-12T10:35:55+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 316m, avg 320m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 104 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: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (STI FULHAM and ZERVOS) maintained close proximity (min 316m, avg 320m) for 104 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_039",
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{
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{
    "zone_id": "discovered_039",
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{
    "radius_m": 5.9000000000000003552713678800500929355621337890625,
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