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    "distance_consistency_m": 4.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 135,
    "overlap_duration_s": 8100,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
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    },
    "time_window": {
        "start": "2026-07-30T16:06:44+00:00",
        "end": "2026-07-30T18:21:44+00:00"
    },
    "points_count": {
        "vessel_a": 17,
        "vessel_b": 17
    },
    "zone_id": "osint_danish_straits",
    "zone_name": "Danish Straits\/Skagerrak",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 42m, avg 51m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 135 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Danish Straits\/Skagerrak"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ASPHALT SONATA and STI HAMMERSMITH) maintained close proximity (min 42m, avg 51m) for 135 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Danish Straits\/Skagerrak, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
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        "time_window": {
            "start_ts": "2026-07-30T16:06:44+00:00",
            "end_ts": "2026-07-30T18:21:44+00:00"
        },
        "searched_at": "2026-07-30T22:30:01.744004+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "osint_danish_straits",
    "zone_name": "Danish Straits\/Skagerrak",
    "dwell_minutes": 393,
    "points_in_zone": 51,
    "first_point": {
        "ts": "2026-07-30T16:45:44+00:00",
        "lat": 57.6902017000000029156581149436533451080322265625,
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        "ts": "2026-07-30T23:18:44+00:00",
        "lat": 57.6902017000000029156581149436533451080322265625,
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{
    "radius_m": 4.4000000000000003552713678800500929355621337890625,
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    "points": 51,
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{
    "zone_id": "osint_danish_straits",
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    "dwell_minutes": 396,
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        "ts": "2026-07-30T22:27:44+00:00",
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{
    "radius_m": 4.4000000000000003552713678800500929355621337890625,
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{
    "vessel_a": {
        "mmsi": 538010878,
        "imo": 9986831,
        "name": "ASPHALT SONATA",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 538005410,
        "imo": 9706463,
        "name": "STI HAMMERSMITH",
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        "vessel_a": {
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            "max_sog": 0
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    "time_window": {
        "start": "2026-07-30T15:36:44+00:00",
        "end": "2026-07-30T18:21:44+00:00"
    },
    "points_count": {
        "vessel_a": 20,
        "vessel_b": 20
    },
    "zone_id": "osint_danish_straits",
    "zone_name": "Danish Straits\/Skagerrak",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 42m, avg 50m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 165 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: Danish Straits\/Skagerrak"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ASPHALT SONATA and STI HAMMERSMITH) maintained close proximity (min 42m, avg 50m) for 165 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 Danish Straits\/Skagerrak, a known STS activity area."
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}

{
    "vessel_a": {
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    "speed_summary": {
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        "vessel_b": {
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    },
    "time_window": {
        "start": "2026-07-30T14:08:00+00:00",
        "end": "2026-07-30T18:21:44+00:00"
    },
    "points_count": {
        "vessel_a": 28,
        "vessel_b": 28
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    "zone_id": "osint_danish_straits",
    "zone_name": "Danish Straits\/Skagerrak",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 42m, avg 50m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 254 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: Danish Straits\/Skagerrak"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ASPHALT SONATA and STI HAMMERSMITH) maintained close proximity (min 42m, avg 50m) for 254 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 Danish Straits\/Skagerrak, a known STS activity area."
    },
    "sar": {
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        "time_window": {
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            "end_ts": "2026-07-30T18:21:44+00:00"
        },
        "searched_at": "2026-07-30T20:45:01.758324+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "osint_danish_straits",
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{
    "radius_m": 4.20000000000000017763568394002504646778106689453125,
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{
    "zone_id": "osint_danish_straits",
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    "points_in_zone": 49,
    "first_point": {
        "ts": "2026-07-30T13:53:41+00:00",
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{
    "vessel_a": {
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    },
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        "name": "STI HAMMERSMITH",
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    },
    "time_window": {
        "start": "2026-07-30T13:42:23+00:00",
        "end": "2026-07-30T18:21:44+00:00"
    },
    "points_count": {
        "vessel_a": 34,
        "vessel_b": 34
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    "zone_id": "osint_danish_straits",
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    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 42m, avg 50m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 279 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
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            },
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                "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: Danish Straits\/Skagerrak"
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}

{
    "radius_m": 1454.5,
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    "zone_id": "osint_danish_straits",
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{
    "zone_id": "osint_danish_straits",
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{
    "zone_id": "osint_danish_straits",
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{
    "zone_id": "osint_danish_straits",
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{
    "zone_id": "osint_danish_straits",
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{
    "zone_id": "osint_danish_straits",
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