TWIST

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{
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{
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{
    "zone_id": "discovered_039",
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{
    "radius_m": 1521.700000000000045474735088646411895751953125,
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{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
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{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 391.69999999999998863131622783839702606201171875,
    "points_in_zone": 120,
    "first_point": {
        "ts": "2026-09-04T16:40:25+00:00",
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        "lat": 34.73086169999999839319571037776768207550048828125,
        "lon": 33.631810000000001537046045996248722076416015625
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{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 391.8999999999999772626324556767940521240234375,
    "points_in_zone": 133,
    "first_point": {
        "ts": "2026-09-04T15:53:15+00:00",
        "lat": 34.685411700000003065724740736186504364013671875,
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        "ts": "2026-09-04T22:25:07+00:00",
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}

{
    "vessel_a": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "min_distance_m": 318,
    "avg_distance_m": 324.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 4.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 75,
    "overlap_duration_s": 4501,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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    },
    "time_window": {
        "start": "2026-09-04T14:09:46+00:00",
        "end": "2026-09-04T15:24:47+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 318m, avg 325m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 75 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (TWIST and HORIZON ARMONIA) maintained close proximity (min 318m, avg 325m) for 75 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": "2026-09-04T14:09:46+00:00",
            "end_ts": "2026-09-04T15:24:47+00:00"
        },
        "searched_at": "2026-09-04T20:45:15.256305+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": 391.6000000000000227373675443232059478759765625,
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    "first_point": {
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{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 303.1000000000000227373675443232059478759765625,
    "avg_distance_m": 309.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 2.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 84,
    "overlap_duration_s": 5041,
    "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": "2026-09-04T14:02:26+00:00",
        "end": "2026-09-04T15:26:27+00:00"
    },
    "points_count": {
        "vessel_a": 11,
        "vessel_b": 11
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 303m, avg 309m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 84 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 (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 303m, avg 309m) for 84 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": 34.7091654999999974506863509304821491241455078125,
            "lon": 33.3211414000000019086655811406672000885009765625
        },
        "time_window": {
            "start_ts": "2026-09-04T14:02:26+00:00",
            "end_ts": "2026-09-04T15:26:27+00:00"
        },
        "searched_at": "2026-09-04T20:45:01.583907+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "min_distance_m": 318,
    "avg_distance_m": 324.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 3.5,
    "duration_minutes": 138,
    "overlap_duration_s": 8282,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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    },
    "time_window": {
        "start": "2026-09-04T13:06:45+00:00",
        "end": "2026-09-04T15:24:47+00:00"
    },
    "points_count": {
        "vessel_a": 24,
        "vessel_b": 24
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 318m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 138 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TWIST and HORIZON ARMONIA) maintained close proximity (min 318m, avg 324m) for 138 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70895440000000320424078381620347499847412109375,
            "lon": 33.321453800000000455838744528591632843017578125
        },
        "time_window": {
            "start_ts": "2026-09-04T13:06:45+00:00",
            "end_ts": "2026-09-04T15:24:47+00:00"
        },
        "searched_at": "2026-09-04T19:45:07.417969+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 303.1000000000000227373675443232059478759765625,
    "avg_distance_m": 309,
    "distance_consistency_m": 2.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 111,
    "overlap_duration_s": 6661,
    "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": "2026-09-04T13:35:26+00:00",
        "end": "2026-09-04T15:26:27+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 303m, avg 309m"
            },
            "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 \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 (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 303m, avg 309m) 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."
    }
}

{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 390.3999999999999772626324556767940521240234375,
    "points_in_zone": 116,
    "first_point": {
        "ts": "2026-09-04T13:57:50+00:00",
        "lat": 34.70819829999999939218469080515205860137939453125,
        "lon": 33.31992170000000186291799764148890972137451171875
    },
    "last_point": {
        "ts": "2026-09-04T20:28:17+00:00",
        "lat": 34.70477329999999938081600703299045562744140625,
        "lon": 33.34994830000000121117409435100853443145751953125
    }
}

{
    "radius_m": 563.3999999999999772626324556767940521240234375,
    "duration_minutes": 158.69999999999998863131622783839702606201171875,
    "points": 27,
    "centroid": {
        "lat": 34.70802518148148152477006078697741031646728515625,
        "lon": 33.31968856666667733179565402679145336151123046875
    },
    "bbox": {
        "min_lat": 34.70476000000000027512214728631079196929931640625,
        "min_lon": 33.31497829999999993333403836004436016082763671875,
        "max_lat": 34.7082333000000033962351153604686260223388671875,
        "max_lon": 33.32002829999999704568836023099720478057861328125
    },
    "zone_id": "discovered_039"
}

{
    "vessel_a": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "min_distance_m": 317.30000000000001136868377216160297393798828125,
    "avg_distance_m": 323.5,
    "distance_consistency_m": 3.5,
    "duration_minutes": 186,
    "overlap_duration_s": 11161,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-04T12:18:46+00:00",
        "end": "2026-09-04T15:24:47+00:00"
    },
    "points_count": {
        "vessel_a": 35,
        "vessel_b": 35
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 186 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TWIST and HORIZON ARMONIA) maintained close proximity (min 317m, avg 324m) for 186 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."
    }
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 303.1000000000000227373675443232059478759765625,
    "avg_distance_m": 308.5,
    "distance_consistency_m": 2.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 180,
    "overlap_duration_s": 10802,
    "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": "2026-09-04T12:26:25+00:00",
        "end": "2026-09-04T15:26:27+00:00"
    },
    "points_count": {
        "vessel_a": 22,
        "vessel_b": 22
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 303m, avg 308m"
            },
            "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 \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": "High-confidence STS candidate. Two tankers (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 303m, avg 308m) 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 396.1000000000000227373675443232059478759765625,
    "points_in_zone": 105,
    "first_point": {
        "ts": "2026-09-04T12:51:47+00:00",
        "lat": 34.70812670000000110803739516995847225189208984375,
        "lon": 33.3200599999999980127540766261518001556396484375
    },
    "last_point": {
        "ts": "2026-09-04T19:27:56+00:00",
        "lat": 34.7042483000000032689058571122586727142333984375,
        "lon": 33.34913499999999686451701563782989978790283203125
    }
}

{
    "radius_m": 573.8999999999999772626324556767940521240234375,
    "duration_minutes": 212.599999999999994315658113919198513031005859375,
    "points": 40,
    "centroid": {
        "lat": 34.708061587499997813210939057171344757080078125,
        "lon": 33.3198010374999995519829099066555500030517578125
    },
    "bbox": {
        "min_lat": 34.70476000000000027512214728631079196929931640625,
        "min_lon": 33.31497829999999993333403836004436016082763671875,
        "max_lat": 34.7082333000000033962351153604686260223388671875,
        "max_lon": 33.3200666999999981499058776535093784332275390625
    },
    "zone_id": "discovered_039"
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 303.1000000000000227373675443232059478759765625,
    "avg_distance_m": 308.5,
    "distance_consistency_m": 2.5,
    "duration_minutes": 209.900000000000005684341886080801486968994140625,
    "overlap_duration_s": 12594,
    "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": "2026-09-04T11:56:33+00:00",
        "end": "2026-09-04T15:26:27+00:00"
    },
    "points_count": {
        "vessel_a": 26,
        "vessel_b": 26
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 303m, avg 308m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 210 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": "High-confidence STS candidate. Two tankers (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 303m, avg 308m) for 210 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."
    }
}

{
    "vessel_a": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 317.30000000000001136868377216160297393798828125,
    "avg_distance_m": 323.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 3.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 235.19999999999998863131622783839702606201171875,
    "overlap_duration_s": 14111,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-04T11:19:46+00:00",
        "end": "2026-09-04T15:14:57+00:00"
    },
    "points_count": {
        "vessel_a": 39,
        "vessel_b": 39
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 323m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 235 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 (HORIZON ARMONIA and TWIST) maintained close proximity (min 317m, avg 323m) for 235 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",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 396.3999999999999772626324556767940521240234375,
    "points_in_zone": 98,
    "first_point": {
        "ts": "2026-09-04T11:51:42+00:00",
        "lat": 34.7081433000000032507159630768001079559326171875,
        "lon": 33.320013299999999389910954050719738006591796875
    },
    "last_point": {
        "ts": "2026-09-04T18:28:05+00:00",
        "lat": 34.70426669999999802485035615973174571990966796875,
        "lon": 33.3485500000000030240698833949863910675048828125
    }
}

{
    "radius_m": 579.1000000000000227373675443232059478759765625,
    "duration_minutes": 278.69999999999998863131622783839702606201171875,
    "points": 54,
    "centroid": {
        "lat": 34.70808095925925584879223606549203395843505859375,
        "lon": 33.31985545925925862320582382380962371826171875
    },
    "bbox": {
        "min_lat": 34.70476000000000027512214728631079196929931640625,
        "min_lon": 33.31497829999999993333403836004436016082763671875,
        "max_lat": 34.7082333000000033962351153604686260223388671875,
        "max_lon": 33.3200666999999981499058776535093784332275390625
    },
    "zone_id": "discovered_039"
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 303.1000000000000227373675443232059478759765625,
    "avg_distance_m": 309,
    "distance_consistency_m": 2.5,
    "duration_minutes": 315,
    "overlap_duration_s": 18899,
    "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": "2026-09-04T10:11:28+00:00",
        "end": "2026-09-04T15:26:27+00:00"
    },
    "points_count": {
        "vessel_a": 38,
        "vessel_b": 38
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 303m, avg 309m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 315 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": "High-confidence STS candidate. Two tankers (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 303m, avg 309m) for 315 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."
    }
}

{
    "vessel_a": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 317.30000000000001136868377216160297393798828125,
    "avg_distance_m": 323.5,
    "distance_consistency_m": 3.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 301.19999999999998863131622783839702606201171875,
    "overlap_duration_s": 18072,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-04T10:13:45+00:00",
        "end": "2026-09-04T15:14:57+00:00"
    },
    "points_count": {
        "vessel_a": 47,
        "vessel_b": 47
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 301 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 (HORIZON ARMONIA and TWIST) maintained close proximity (min 317m, avg 324m) for 301 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",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 396.6000000000000227373675443232059478759765625,
    "points_in_zone": 92,
    "first_point": {
        "ts": "2026-09-04T10:51:42+00:00",
        "lat": 34.7081299999999970395947457291185855865478515625,
        "lon": 33.3200199999999995270627550780773162841796875
    },
    "last_point": {
        "ts": "2026-09-04T17:28:17+00:00",
        "lat": 34.702934999999996534825186245143413543701171875,
        "lon": 33.34967329999999918754838290624320507049560546875
    }
}

{
    "radius_m": 581.299999999999954525264911353588104248046875,
    "duration_minutes": 329.69999999999998863131622783839702606201171875,
    "points": 64,
    "centroid": {
        "lat": 34.70808815156248527955540339462459087371826171875,
        "lon": 33.3198797390625003345121513120830059051513671875
    },
    "bbox": {
        "min_lat": 34.70476000000000027512214728631079196929931640625,
        "min_lon": 33.31497829999999993333403836004436016082763671875,
        "max_lat": 34.7082333000000033962351153604686260223388671875,
        "max_lon": 33.3200666999999981499058776535093784332275390625
    },
    "zone_id": "discovered_039"
}

{
    "vessel_a": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 316.69999999999998863131622783839702606201171875,
    "avg_distance_m": 323.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 3.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 370.19999999999998863131622783839702606201171875,
    "overlap_duration_s": 22212,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-04T09:04:45+00:00",
        "end": "2026-09-04T15:14:57+00:00"
    },
    "points_count": {
        "vessel_a": 59,
        "vessel_b": 59
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 323m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 370 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 (HORIZON ARMONIA and TWIST) maintained close proximity (min 317m, avg 323m) for 370 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": 34.7089392999999972744262777268886566162109375,
            "lon": 33.32147590000000292320692096836864948272705078125
        },
        "time_window": {
            "start_ts": "2026-09-04T09:04:45+00:00",
            "end_ts": "2026-09-04T15:14:57+00:00"
        },
        "searched_at": "2026-09-04T15:45:01.312665+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 303.1000000000000227373675443232059478759765625,
    "avg_distance_m": 308.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 2.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 348.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 20884,
    "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": "2026-09-04T09:38:23+00:00",
        "end": "2026-09-04T15:26:27+00:00"
    },
    "points_count": {
        "vessel_a": 44,
        "vessel_b": 44
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 303m, avg 309m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 348 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 (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 303m, avg 309m) for 348 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",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 396.3999999999999772626324556767940521240234375,
    "points_in_zone": 82,
    "first_point": {
        "ts": "2026-09-04T09:51:49+00:00",
        "lat": 34.7081366999999971767465467564761638641357421875,
        "lon": 33.3200216999999980771463015116751194000244140625
    },
    "last_point": {
        "ts": "2026-09-04T16:28:16+00:00",
        "lat": 34.6779099999999971259967423975467681884765625,
        "lon": 33.36215829999999726851456216536462306976318359375
    }
}

{
    "radius_m": 583.3999999999999772626324556767940521240234375,
    "duration_minutes": 395.6000000000000227373675443232059478759765625,
    "points": 76,
    "centroid": {
        "lat": 34.70809556973683385194817674346268177032470703125,
        "lon": 33.3199014249999976300387061201035976409912109375
    },
    "bbox": {
        "min_lat": 34.70476000000000027512214728631079196929931640625,
        "min_lon": 33.31497829999999993333403836004436016082763671875,
        "max_lat": 34.7082333000000033962351153604686260223388671875,
        "max_lon": 33.3200666999999981499058776535093784332275390625
    },
    "zone_id": "discovered_039"
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 303.1000000000000227373675443232059478759765625,
    "avg_distance_m": 308.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 2.5,
    "duration_minutes": 369,
    "overlap_duration_s": 22142,
    "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": "2026-09-04T08:32:26+00:00",
        "end": "2026-09-04T14:41:28+00:00"
    },
    "points_count": {
        "vessel_a": 46,
        "vessel_b": 46
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 303m, avg 308m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 369 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \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": "High-confidence STS candidate. Two tankers (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 303m, avg 308m) for 369 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 316.69999999999998863131622783839702606201171875,
    "avg_distance_m": 323,
    "distance_consistency_m": 3.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 385.19999999999998863131622783839702606201171875,
    "overlap_duration_s": 23114,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-04T08:49:43+00:00",
        "end": "2026-09-04T15:14:57+00:00"
    },
    "points_count": {
        "vessel_a": 63,
        "vessel_b": 63
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 323m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 385 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 (HORIZON ARMONIA and TWIST) maintained close proximity (min 317m, avg 323m) for 385 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",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 393,
    "points_in_zone": 76,
    "first_point": {
        "ts": "2026-09-04T08:51:46+00:00",
        "lat": 34.7081400000000002137312549166381359100341796875,
        "lon": 33.319978300000002491287887096405029296875
    },
    "last_point": {
        "ts": "2026-09-04T15:24:47+00:00",
        "lat": 34.70821000000000111640474642626941204071044921875,
        "lon": 33.3199283000000008314600563608109951019287109375
    }
}

{
    "radius_m": 11.800000000000000710542735760100185871124267578125,
    "duration_minutes": 393,
    "points": 76,
    "centroid": {
        "lat": 34.70814951710525519956718198955059051513671875,
        "lon": 33.31999642499999225719875539653003215789794921875
    },
    "bbox": {
        "min_lat": 34.7080916999999971039869706146419048309326171875,
        "min_lon": 33.3198732999999975845639710314571857452392578125,
        "max_lat": 34.7082333000000033962351153604686260223388671875,
        "max_lon": 33.3200666999999981499058776535093784332275390625
    },
    "zone_id": "discovered_039"
}

{
    "vessel_a": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 316.69999999999998863131622783839702606201171875,
    "avg_distance_m": 322.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 2.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 382.30000000000001136868377216160297393798828125,
    "overlap_duration_s": 22936,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-09-04T07:58:42+00:00",
        "end": "2026-09-04T14:20:58+00:00"
    },
    "points_count": {
        "vessel_a": 66,
        "vessel_b": 66
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 323m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 382 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 (HORIZON ARMONIA and TWIST) maintained close proximity (min 317m, avg 323m) for 382 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",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 393,
    "points_in_zone": 78,
    "first_point": {
        "ts": "2026-09-04T07:54:48+00:00",
        "lat": 34.70811669999999793390088598243892192840576171875,
        "lon": 33.3200199999999995270627550780773162841796875
    },
    "last_point": {
        "ts": "2026-09-04T14:27:46+00:00",
        "lat": 34.708228300000001809166860766708850860595703125,
        "lon": 33.319933300000002418528310954570770263671875
    }
}

{
    "radius_m": 12.199999999999999289457264239899814128875732421875,
    "duration_minutes": 393,
    "points": 78,
    "centroid": {
        "lat": 34.7081388038461540190837695263326168060302734375,
        "lon": 33.3200106602564147806333494372665882110595703125
    },
    "bbox": {
        "min_lat": 34.7080916999999971039869706146419048309326171875,
        "min_lon": 33.31992170000000186291799764148890972137451171875,
        "max_lat": 34.708228300000001809166860766708850860595703125,
        "max_lon": 33.3200666999999981499058776535093784332275390625
    },
    "zone_id": "discovered_039"
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 303.80000000000001136868377216160297393798828125,
    "avg_distance_m": 308.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 2.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 390,
    "overlap_duration_s": 23401,
    "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": "2026-09-04T07:56:26+00:00",
        "end": "2026-09-04T14:26:27+00:00"
    },
    "points_count": {
        "vessel_a": 49,
        "vessel_b": 49
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 304m, avg 308m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 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": "High-confidence STS candidate. Two tankers (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 304m, avg 308m) for 390 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."
    }
}

{
    "vessel_a": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "min_distance_m": 316.69999999999998863131622783839702606201171875,
    "avg_distance_m": 323.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 2.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 267,
    "overlap_duration_s": 16019,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-04T06:03:42+00:00",
        "end": "2026-09-04T10:30:41+00:00"
    },
    "points_count": {
        "vessel_a": 51,
        "vessel_b": 51
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 267 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 (TWIST and HORIZON ARMONIA) maintained close proximity (min 317m, avg 324m) for 267 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": 34.7089280000000002246451913379132747650146484375,
            "lon": 33.32149170000000282243490801192820072174072265625
        },
        "time_window": {
            "start_ts": "2026-09-04T06:03:42+00:00",
            "end_ts": "2026-09-04T10:30:41+00:00"
        },
        "searched_at": "2026-09-04T12:45:09.184726+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 303.8999999999999772626324556767940521240234375,
    "avg_distance_m": 308.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 2.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 384,
    "overlap_duration_s": 23041,
    "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": "2026-09-04T06:41:23+00:00",
        "end": "2026-09-04T13:05:24+00:00"
    },
    "points_count": {
        "vessel_a": 54,
        "vessel_b": 54
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 304m, avg 308m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 384 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": "High-confidence STS candidate. Two tankers (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 304m, avg 308m) for 384 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",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 393.19999999999998863131622783839702606201171875,
    "points_in_zone": 81,
    "first_point": {
        "ts": "2026-09-04T06:51:42+00:00",
        "lat": 34.70813170000000269510564976371824741363525390625,
        "lon": 33.320030000000002701199264265596866607666015625
    },
    "last_point": {
        "ts": "2026-09-04T13:24:53+00:00",
        "lat": 34.70812169999999952096914057619869709014892578125,
        "lon": 33.32002829999999704568836023099720478057861328125
    }
}

{
    "radius_m": 5.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 393.19999999999998863131622783839702606201171875,
    "points": 81,
    "centroid": {
        "lat": 34.70813070123455190696404315531253814697265625,
        "lon": 33.3200176753086481085119885392487049102783203125
    },
    "bbox": {
        "min_lat": 34.7080916999999971039869706146419048309326171875,
        "min_lon": 33.3199766999999980043867253698408603668212890625,
        "max_lat": 34.7081816999999972495061228983104228973388671875,
        "max_lon": 33.3200666999999981499058776535093784332275390625
    },
    "zone_id": "discovered_039"
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 303.8999999999999772626324556767940521240234375,
    "avg_distance_m": 308.5,
    "distance_consistency_m": 2.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 387.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 23225,
    "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": "2026-09-04T05:59:20+00:00",
        "end": "2026-09-04T12:26:25+00:00"
    },
    "points_count": {
        "vessel_a": 55,
        "vessel_b": 55
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 304m, avg 308m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \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": "High-confidence STS candidate. Two tankers (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 304m, avg 308m) for 387 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."
    }
}

{
    "vessel_a": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "min_distance_m": 316.69999999999998863131622783839702606201171875,
    "avg_distance_m": 323.5,
    "distance_consistency_m": 3,
    "duration_minutes": 323.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 19435,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-04T05:06:46+00:00",
        "end": "2026-09-04T10:30:41+00:00"
    },
    "points_count": {
        "vessel_a": 67,
        "vessel_b": 67
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 324 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 (TWIST and HORIZON ARMONIA) maintained close proximity (min 317m, avg 324m) for 324 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": 34.70892380000000088102751760743558406829833984375,
            "lon": 33.32149259999999912906787358224391937255859375
        },
        "time_window": {
            "start_ts": "2026-09-04T05:06:46+00:00",
            "end_ts": "2026-09-04T10:30:41+00:00"
        },
        "searched_at": "2026-09-04T11:45:04.543040+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": 396,
    "points_in_zone": 82,
    "first_point": {
        "ts": "2026-09-04T05:51:45+00:00",
        "lat": 34.70812670000000110803739516995847225189208984375,
        "lon": 33.3200149999999979399945004843175411224365234375
    },
    "last_point": {
        "ts": "2026-09-04T12:27:45+00:00",
        "lat": 34.7081299999999970395947457291185855865478515625,
        "lon": 33.3200317000000012512828106991946697235107421875
    }
}

{
    "radius_m": 6.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 396,
    "points": 82,
    "centroid": {
        "lat": 34.70812752195120509668413433246314525604248046875,
        "lon": 33.3200154670731620853985077701508998870849609375
    },
    "bbox": {
        "min_lat": 34.708089999999998553903424181044101715087890625,
        "min_lon": 33.3199766999999980043867253698408603668212890625,
        "max_lat": 34.7081816999999972495061228983104228973388671875,
        "max_lon": 33.32003830000000021982486941851675510406494140625
    },
    "zone_id": "discovered_039"
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 303.8999999999999772626324556767940521240234375,
    "avg_distance_m": 308.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 2.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 381,
    "overlap_duration_s": 22860,
    "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": "2026-09-04T04:38:24+00:00",
        "end": "2026-09-04T10:59:24+00:00"
    },
    "points_count": {
        "vessel_a": 51,
        "vessel_b": 51
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 304m, avg 308m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 381 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 304m, avg 308m) for 381 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 393.1000000000000227373675443232059478759765625,
    "points_in_zone": 85,
    "first_point": {
        "ts": "2026-09-04T04:54:41+00:00",
        "lat": 34.7081299999999970395947457291185855865478515625,
        "lon": 33.320023300000002564047463238239288330078125
    },
    "last_point": {
        "ts": "2026-09-04T11:27:45+00:00",
        "lat": 34.708138300000001663647708483040332794189453125,
        "lon": 33.32001000000000345835360349155962467193603515625
    }
}

{
    "radius_m": 5.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 393.1000000000000227373675443232059478759765625,
    "points": 85,
    "centroid": {
        "lat": 34.7081242941176242311485111713409423828125,
        "lon": 33.32001509647057702068195794709026813507080078125
    },
    "bbox": {
        "min_lat": 34.708089999999998553903424181044101715087890625,
        "min_lon": 33.3199766999999980043867253698408603668212890625,
        "max_lat": 34.70817329999999856227077543735504150390625,
        "max_lon": 33.32003830000000021982486941851675510406494140625
    },
    "zone_id": "discovered_039"
}

{
    "vessel_a": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "min_distance_m": 316.69999999999998863131622783839702606201171875,
    "avg_distance_m": 323.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 3,
    "duration_minutes": 371.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 22313,
    "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
        }
    },
    "time_window": {
        "start": "2026-09-04T04:18:48+00:00",
        "end": "2026-09-04T10:30:41+00:00"
    },
    "points_count": {
        "vessel_a": 77,
        "vessel_b": 77
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 372 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 (TWIST and HORIZON ARMONIA) maintained close proximity (min 317m, avg 324m) for 372 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."
    }
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 303.8999999999999772626324556767940521240234375,
    "avg_distance_m": 308.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 2.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 372.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 22328,
    "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": "2026-09-04T03:59:20+00:00",
        "end": "2026-09-04T10:11:28+00:00"
    },
    "points_count": {
        "vessel_a": 50,
        "vessel_b": 50
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 304m, avg 308m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 372 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": "High-confidence STS candidate. Two tankers (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 304m, avg 308m) for 372 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."
    }
}

{
    "vessel_a": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "min_distance_m": 316.69999999999998863131622783839702606201171875,
    "avg_distance_m": 323.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 2.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 377.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 22677,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-04T03:51:46+00:00",
        "end": "2026-09-04T10:09:43+00:00"
    },
    "points_count": {
        "vessel_a": 81,
        "vessel_b": 81
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 378 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 (TWIST and HORIZON ARMONIA) maintained close proximity (min 317m, avg 324m) for 378 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",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 392.8999999999999772626324556767940521240234375,
    "points_in_zone": 82,
    "first_point": {
        "ts": "2026-09-04T03:51:46+00:00",
        "lat": 34.708134999999998626663000322878360748291015625,
        "lon": 33.3200082999999978028426994569599628448486328125
    },
    "last_point": {
        "ts": "2026-09-04T10:24:41+00:00",
        "lat": 34.7081232999999969024429447017610073089599609375,
        "lon": 33.31999499999999869714883971028029918670654296875
    }
}

{
    "radius_m": 5.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 392.8999999999999772626324556767940521240234375,
    "points": 82,
    "centroid": {
        "lat": 34.70812565243901559597361483611166477203369140625,
        "lon": 33.32001383780487202557196724228560924530029296875
    },
    "bbox": {
        "min_lat": 34.708089999999998553903424181044101715087890625,
        "min_lon": 33.3199632999999977300831233151257038116455078125,
        "max_lat": 34.70817329999999856227077543735504150390625,
        "max_lon": 33.32003830000000021982486941851675510406494140625
    },
    "zone_id": "discovered_039"
}

{
    "vessel_a": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "min_distance_m": 317.19999999999998863131622783839702606201171875,
    "avg_distance_m": 323.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 2.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 384,
    "overlap_duration_s": 23039,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-04T02:48:45+00:00",
        "end": "2026-09-04T09:12:44+00:00"
    },
    "points_count": {
        "vessel_a": 82,
        "vessel_b": 82
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 384 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 (TWIST and HORIZON ARMONIA) maintained close proximity (min 317m, avg 324m) for 384 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."
    }
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 303.8999999999999772626324556767940521240234375,
    "avg_distance_m": 308.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 2,
    "duration_minutes": 390,
    "overlap_duration_s": 23398,
    "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": "2026-09-04T02:53:28+00:00",
        "end": "2026-09-04T09:23:26+00:00"
    },
    "points_count": {
        "vessel_a": 51,
        "vessel_b": 51
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 304m, avg 309m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 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": "High-confidence STS candidate. Two tankers (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 304m, avg 309m) for 390 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",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 396.1000000000000227373675443232059478759765625,
    "points_in_zone": 84,
    "first_point": {
        "ts": "2026-09-04T02:51:44+00:00",
        "lat": 34.7081299999999970395947457291185855865478515625,
        "lon": 33.32002829999999704568836023099720478057861328125
    },
    "last_point": {
        "ts": "2026-09-04T09:27:48+00:00",
        "lat": 34.70811499999999938381733954884111881256103515625,
        "lon": 33.32001669999999649007804691791534423828125
    }
}

{
    "radius_m": 5.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 396.1000000000000227373675443232059478759765625,
    "points": 84,
    "centroid": {
        "lat": 34.7081237523809562617316260002553462982177734375,
        "lon": 33.32001390357142867060247226618230342864990234375
    },
    "bbox": {
        "min_lat": 34.708089999999998553903424181044101715087890625,
        "min_lon": 33.3199632999999977300831233151257038116455078125,
        "max_lat": 34.70817000000000263071342487819492816925048828125,
        "max_lon": 33.32003830000000021982486941851675510406494140625
    },
    "zone_id": "discovered_039"
}

{
    "vessel_a": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "min_distance_m": 317.19999999999998863131622783839702606201171875,
    "avg_distance_m": 323.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 2.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 384,
    "overlap_duration_s": 23040,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-04T01:54:44+00:00",
        "end": "2026-09-04T08:18:44+00:00"
    },
    "points_count": {
        "vessel_a": 87,
        "vessel_b": 87
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 384 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 (TWIST and HORIZON ARMONIA) maintained close proximity (min 317m, avg 324m) for 384 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."
    }
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 303.8999999999999772626324556767940521240234375,
    "avg_distance_m": 308.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 393.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 23584,
    "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": "2026-09-04T01:44:21+00:00",
        "end": "2026-09-04T08:17:25+00:00"
    },
    "points_count": {
        "vessel_a": 59,
        "vessel_b": 59
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 304m, avg 309m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 393 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": "High-confidence STS candidate. Two tankers (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 304m, avg 309m) for 393 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",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 396.1000000000000227373675443232059478759765625,
    "points_in_zone": 90,
    "first_point": {
        "ts": "2026-09-04T01:42:40+00:00",
        "lat": 34.7081333000000000765794538892805576324462890625,
        "lon": 33.3200149999999979399945004843175411224365234375
    },
    "last_point": {
        "ts": "2026-09-04T08:18:44+00:00",
        "lat": 34.70812169999999952096914057619869709014892578125,
        "lon": 33.320023300000002564047463238239288330078125
    }
}

{
    "radius_m": 5.5,
    "duration_minutes": 396.1000000000000227373675443232059478759765625,
    "points": 90,
    "centroid": {
        "lat": 34.70812076111111110776619170792400836944580078125,
        "lon": 33.3200138844444353480866993777453899383544921875
    },
    "bbox": {
        "min_lat": 34.7080883000000000038198777474462985992431640625,
        "min_lon": 33.3199632999999977300831233151257038116455078125,
        "max_lat": 34.70817000000000263071342487819492816925048828125,
        "max_lon": 33.32003830000000021982486941851675510406494140625
    },
    "zone_id": "discovered_039"
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 304.3999999999999772626324556767940521240234375,
    "avg_distance_m": 308.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 386.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 23214,
    "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": "2026-09-04T00:59:28+00:00",
        "end": "2026-09-04T07:26:22+00:00"
    },
    "points_count": {
        "vessel_a": 57,
        "vessel_b": 57
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 304m, avg 309m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \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": "High-confidence STS candidate. Two tankers (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 304m, avg 309m) for 387 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."
    }
}

{
    "vessel_a": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "min_distance_m": 317.19999999999998863131622783839702606201171875,
    "avg_distance_m": 324,
    "distance_consistency_m": 2.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 393.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 23585,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-04T00:54:43+00:00",
        "end": "2026-09-04T07:27:48+00:00"
    },
    "points_count": {
        "vessel_a": 85,
        "vessel_b": 85
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 393 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 (TWIST and HORIZON ARMONIA) maintained close proximity (min 317m, avg 324m) for 393 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",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 393.1000000000000227373675443232059478759765625,
    "points_in_zone": 85,
    "first_point": {
        "ts": "2026-09-04T00:54:43+00:00",
        "lat": 34.7081299999999970395947457291185855865478515625,
        "lon": 33.3200250000000011141310096718370914459228515625
    },
    "last_point": {
        "ts": "2026-09-04T07:27:48+00:00",
        "lat": 34.7080916999999971039869706146419048309326171875,
        "lon": 33.3200149999999979399945004843175411224365234375
    }
}

{
    "radius_m": 5.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 393.1000000000000227373675443232059478759765625,
    "points": 85,
    "centroid": {
        "lat": 34.708118471764692003489471971988677978515625,
        "lon": 33.32001323176468332576405373401939868927001953125
    },
    "bbox": {
        "min_lat": 34.7080883000000000038198777474462985992431640625,
        "min_lon": 33.3199632999999977300831233151257038116455078125,
        "max_lat": 34.70817000000000263071342487819492816925048828125,
        "max_lon": 33.32003830000000021982486941851675510406494140625
    },
    "zone_id": "discovered_039"
}

{
    "vessel_a": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "min_distance_m": 317.19999999999998863131622783839702606201171875,
    "avg_distance_m": 323.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 2.5,
    "duration_minutes": 384.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 23046,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-03T23:48:41+00:00",
        "end": "2026-09-04T06:12:47+00:00"
    },
    "points_count": {
        "vessel_a": 82,
        "vessel_b": 82
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 384 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": "High-confidence STS candidate. Two tankers (TWIST and HORIZON ARMONIA) maintained close proximity (min 317m, avg 324m) for 384 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",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 396,
    "points_in_zone": 84,
    "first_point": {
        "ts": "2026-09-03T23:51:43+00:00",
        "lat": 34.70810329999999765959728392772376537322998046875,
        "lon": 33.32002829999999704568836023099720478057861328125
    },
    "last_point": {
        "ts": "2026-09-04T06:27:44+00:00",
        "lat": 34.708089999999998553903424181044101715087890625,
        "lon": 33.31998999999999711008058511652052402496337890625
    }
}

{
    "radius_m": 5.9000000000000003552713678800500929355621337890625,
    "duration_minutes": 396,
    "points": 84,
    "centroid": {
        "lat": 34.708117559523799400267307646572589874267578125,
        "lon": 33.32001388452379586624374496750533580780029296875
    },
    "bbox": {
        "min_lat": 34.70807330000000234804247156716883182525634765625,
        "min_lon": 33.3199632999999977300831233151257038116455078125,
        "max_lat": 34.70817000000000263071342487819492816925048828125,
        "max_lon": 33.320058299999999462670530192553997039794921875
    },
    "zone_id": "discovered_039"
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 304.5,
    "avg_distance_m": 309.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 2.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 375,
    "overlap_duration_s": 22500,
    "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": "2026-09-03T23:56:24+00:00",
        "end": "2026-09-04T06:11:24+00:00"
    },
    "points_count": {
        "vessel_a": 53,
        "vessel_b": 53
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 304m, avg 309m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 375 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": "High-confidence STS candidate. Two tankers (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 304m, avg 309m) for 375 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."
    }
}

{
    "vessel_a": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "min_distance_m": 317.19999999999998863131622783839702606201171875,
    "avg_distance_m": 324,
    "distance_consistency_m": 2.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 390.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 23404,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-03T22:42:41+00:00",
        "end": "2026-09-04T05:12:45+00:00"
    },
    "points_count": {
        "vessel_a": 71,
        "vessel_b": 71
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 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 (TWIST and HORIZON ARMONIA) maintained close proximity (min 317m, avg 324m) for 390 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."
    }
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 304.5,
    "avg_distance_m": 309.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 2.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 378,
    "overlap_duration_s": 22680,
    "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": "2026-09-03T22:20:24+00:00",
        "end": "2026-09-04T04:38:24+00:00"
    },
    "points_count": {
        "vessel_a": 52,
        "vessel_b": 52
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 304m, avg 309m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 378 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": "High-confidence STS candidate. Two tankers (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 304m, avg 309m) for 378 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",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 393,
    "points_in_zone": 74,
    "first_point": {
        "ts": "2026-09-03T22:54:42+00:00",
        "lat": 34.70810329999999765959728392772376537322998046875,
        "lon": 33.32001170000000200843714992515742778778076171875
    },
    "last_point": {
        "ts": "2026-09-04T05:27:41+00:00",
        "lat": 34.70812670000000110803739516995847225189208984375,
        "lon": 33.3200199999999995270627550780773162841796875
    }
}

{
    "radius_m": 5.9000000000000003552713678800500929355621337890625,
    "duration_minutes": 393,
    "points": 74,
    "centroid": {
        "lat": 34.7081178121621434229382430203258991241455078125,
        "lon": 33.32001314864864838227731524966657161712646484375
    },
    "bbox": {
        "min_lat": 34.70807330000000234804247156716883182525634765625,
        "min_lon": 33.3199632999999977300831233151257038116455078125,
        "max_lat": 34.70817000000000263071342487819492816925048828125,
        "max_lon": 33.320058299999999462670530192553997039794921875
    },
    "zone_id": "discovered_039"
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 304.5,
    "avg_distance_m": 309.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 2.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 390,
    "overlap_duration_s": 23401,
    "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": "2026-09-03T21:35:24+00:00",
        "end": "2026-09-04T04:05:25+00:00"
    },
    "points_count": {
        "vessel_a": 52,
        "vessel_b": 52
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 304m, avg 309m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 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": "High-confidence STS candidate. Two tankers (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 304m, avg 309m) for 390 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",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 71,
    "first_point": {
        "ts": "2026-09-03T21:57:46+00:00",
        "lat": 34.70811669999999793390088598243892192840576171875,
        "lon": 33.32002829999999704568836023099720478057861328125
    },
    "last_point": {
        "ts": "2026-09-04T04:27:47+00:00",
        "lat": 34.70814829999999773235686006955802440643310546875,
        "lon": 33.31999669999999724723238614387810230255126953125
    }
}

{
    "radius_m": 4.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 390,
    "points": 71,
    "centroid": {
        "lat": 34.70811509154928131692940951324999332427978515625,
        "lon": 33.32001314084507015422786935232579708099365234375
    },
    "bbox": {
        "min_lat": 34.70807330000000234804247156716883182525634765625,
        "min_lon": 33.3199632999999977300831233151257038116455078125,
        "max_lat": 34.70815499999999786950866109691560268402099609375,
        "max_lon": 33.320058299999999462670530192553997039794921875
    },
    "zone_id": "discovered_039"
}

{
    "vessel_a": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "min_distance_m": 317.19999999999998863131622783839702606201171875,
    "avg_distance_m": 324.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 2.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 387,
    "overlap_duration_s": 23220,
    "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
        }
    },
    "time_window": {
        "start": "2026-09-03T21:45:47+00:00",
        "end": "2026-09-04T04:12:47+00:00"
    },
    "points_count": {
        "vessel_a": 69,
        "vessel_b": 69
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \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": "High-confidence STS candidate. Two tankers (TWIST and HORIZON ARMONIA) maintained close proximity (min 317m, avg 324m) for 387 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."
    }
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 304.5,
    "avg_distance_m": 309.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 2.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 393,
    "overlap_duration_s": 23580,
    "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": "2026-09-03T20:32:27+00:00",
        "end": "2026-09-04T03:05:27+00:00"
    },
    "points_count": {
        "vessel_a": 47,
        "vessel_b": 47
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 304m, avg 309m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 393 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": "High-confidence STS candidate. Two tankers (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 304m, avg 309m) for 393 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."
    }
}

{
    "vessel_a": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "min_distance_m": 318.5,
    "avg_distance_m": 324.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 2.5,
    "duration_minutes": 393.19999999999998863131622783839702606201171875,
    "overlap_duration_s": 23591,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-03T20:54:39+00:00",
        "end": "2026-09-04T03:27:50+00:00"
    },
    "points_count": {
        "vessel_a": 68,
        "vessel_b": 68
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 318m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 393 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": "High-confidence STS candidate. Two tankers (TWIST and HORIZON ARMONIA) maintained close proximity (min 318m, avg 324m) for 393 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",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 393.19999999999998863131622783839702606201171875,
    "points_in_zone": 68,
    "first_point": {
        "ts": "2026-09-03T20:54:39+00:00",
        "lat": 34.708106700000001865191734395921230316162109375,
        "lon": 33.3200216999999980771463015116751194000244140625
    },
    "last_point": {
        "ts": "2026-09-04T03:27:50+00:00",
        "lat": 34.708106700000001865191734395921230316162109375,
        "lon": 33.32000500000000187128534889779984951019287109375
    }
}

{
    "radius_m": 4.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 393.19999999999998863131622783839702606201171875,
    "points": 68,
    "centroid": {
        "lat": 34.70811154264703191074659116566181182861328125,
        "lon": 33.32001553676470706477630301378667354583740234375
    },
    "bbox": {
        "min_lat": 34.70807330000000234804247156716883182525634765625,
        "min_lon": 33.31998829999999855999703868292272090911865234375,
        "max_lat": 34.7081400000000002137312549166381359100341796875,
        "max_lon": 33.320058299999999462670530192553997039794921875
    },
    "zone_id": "discovered_039"
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 304.5,
    "avg_distance_m": 309.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 2,
    "duration_minutes": 390.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 23405,
    "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": "2026-09-03T19:44:23+00:00",
        "end": "2026-09-04T02:14:28+00:00"
    },
    "points_count": {
        "vessel_a": 42,
        "vessel_b": 42
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 304m, avg 309m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 390 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": "High-confidence STS candidate. Two tankers (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 304m, avg 309m) for 390 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."
    }
}

{
    "vessel_a": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "min_distance_m": 319.19999999999998863131622783839702606201171875,
    "avg_distance_m": 324.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 2.5,
    "duration_minutes": 393.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 23585,
    "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
        }
    },
    "time_window": {
        "start": "2026-09-03T19:54:37+00:00",
        "end": "2026-09-04T02:27:42+00:00"
    },
    "points_count": {
        "vessel_a": 66,
        "vessel_b": 66
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 319m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 393 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": "High-confidence STS candidate. Two tankers (TWIST and HORIZON ARMONIA) maintained close proximity (min 319m, avg 324m) for 393 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",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 396,
    "points_in_zone": 67,
    "first_point": {
        "ts": "2026-09-03T19:51:41+00:00",
        "lat": 34.70810000000000172803993336856365203857421875,
        "lon": 33.3200250000000011141310096718370914459228515625
    },
    "last_point": {
        "ts": "2026-09-04T02:27:42+00:00",
        "lat": 34.70811499999999938381733954884111881256103515625,
        "lon": 33.3200082999999978028426994569599628448486328125
    }
}

{
    "radius_m": 4.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 396,
    "points": 67,
    "centroid": {
        "lat": 34.7081111179104340180856524966657161712646484375,
        "lon": 33.3200147253731273622179287485778331756591796875
    },
    "bbox": {
        "min_lat": 34.70807330000000234804247156716883182525634765625,
        "min_lon": 33.31998829999999855999703868292272090911865234375,
        "max_lat": 34.7081400000000002137312549166381359100341796875,
        "max_lon": 33.320058299999999462670530192553997039794921875
    },
    "zone_id": "discovered_039"
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 301.8999999999999772626324556767940521240234375,
    "avg_distance_m": 309.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 2.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 384.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 23044,
    "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": "2026-09-03T18:59:20+00:00",
        "end": "2026-09-04T01:23:24+00:00"
    },
    "points_count": {
        "vessel_a": 33,
        "vessel_b": 33
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 302m, avg 309m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 384 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 (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 302m, avg 309m) for 384 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."
    }
}

{
    "vessel_a": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "min_distance_m": 318.8999999999999772626324556767940521240234375,
    "avg_distance_m": 324,
    "distance_consistency_m": 2.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 393.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 23585,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-03T18:54:40+00:00",
        "end": "2026-09-04T01:27:45+00:00"
    },
    "points_count": {
        "vessel_a": 66,
        "vessel_b": 66
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 319m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 393 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 (TWIST and HORIZON ARMONIA) maintained close proximity (min 319m, avg 324m) for 393 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",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 396.1000000000000227373675443232059478759765625,
    "points_in_zone": 67,
    "first_point": {
        "ts": "2026-09-03T18:51:41+00:00",
        "lat": 34.708106700000001865191734395921230316162109375,
        "lon": 33.32000670000000042136889533139765262603759765625
    },
    "last_point": {
        "ts": "2026-09-04T01:27:45+00:00",
        "lat": 34.70810999999999779674908495508134365081787109375,
        "lon": 33.32000330000000332120180246420204639434814453125
    }
}

{
    "radius_m": 5.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 396.1000000000000227373675443232059478759765625,
    "points": 67,
    "centroid": {
        "lat": 34.7081133059701443244193796999752521514892578125,
        "lon": 33.3200176611940293014413327910006046295166015625
    },
    "bbox": {
        "min_lat": 34.70807330000000234804247156716883182525634765625,
        "min_lon": 33.31998829999999855999703868292272090911865234375,
        "max_lat": 34.70815830000000090649336925707757472991943359375,
        "max_lon": 33.320058299999999462670530192553997039794921875
    },
    "zone_id": "discovered_039"
}

{
    "vessel_a": {
        "mmsi": 563261400,
        "imo": 9976874,
        "name": "NAVIG8 EXPRESS",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "min_distance_m": 301.8999999999999772626324556767940521240234375,
    "avg_distance_m": 308.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 2.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 375,
    "overlap_duration_s": 22499,
    "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": "2026-09-03T17:50:24+00:00",
        "end": "2026-09-04T00:05:23+00:00"
    },
    "points_count": {
        "vessel_a": 35,
        "vessel_b": 35
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 302m, avg 309m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 375 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": "High-confidence STS candidate. Two tankers (NAVIG8 EXPRESS and TWIST) maintained close proximity (min 302m, avg 309m) for 375 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."
    }
}

{
    "vessel_a": {
        "mmsi": 636021552,
        "imo": 9422639,
        "name": "TWIST",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 636013938,
        "imo": 9407354,
        "name": "HORIZON ARMONIA",
        "flag": "LIBERIA"
    },
    "min_distance_m": 318.8999999999999772626324556767940521240234375,
    "avg_distance_m": 324,
    "distance_consistency_m": 2.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 387,
    "overlap_duration_s": 23220,
    "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
        }
    },
    "time_window": {
        "start": "2026-09-03T17:48:42+00:00",
        "end": "2026-09-04T00:15:42+00:00"
    },
    "points_count": {
        "vessel_a": 64,
        "vessel_b": 64
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 319m, avg 324m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 387 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TWIST and HORIZON ARMONIA) maintained close proximity (min 319m, avg 324m) for 387 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",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 390.1000000000000227373675443232059478759765625,
    "points_in_zone": 65,
    "first_point": {
        "ts": "2026-09-03T17:51:35+00:00",
        "lat": 34.70812169999999952096914057619869709014892578125,
        "lon": 33.32001000000000345835360349155962467193603515625
    },
    "last_point": {
        "ts": "2026-09-04T00:21:38+00:00",
        "lat": 34.7081017000000002781234798021614551544189453125,
        "lon": 33.32004669999999890706021687947213649749755859375
    }
}