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{
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{
    "zone_id": "discovered_167",
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    "radius_m": 899.8999999999999772626324556767940521240234375,
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{
    "vessel_a": {
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        "components": {
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                "max": 25,
                "detail": "Min distance 29m, avg 35m"
            },
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                "max": 25,
                "detail": "Duration 100 minutes"
            },
            "speed_stability": {
                "score": 20,
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                "detail": "both nearly stationary; very stable speeds"
            },
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                "score": 15,
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            },
            "isolation": {
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                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
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        "notes": "No Sentinel-1 scenes covering AOI and time window"
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}

{
    "zone_id": "discovered_167",
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    "radius_m": 917.8999999999999772626324556767940521240234375,
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{
    "vessel_a": {
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        "vessel_a": 12,
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    "zone_id": "discovered_167",
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    "score": {
        "value": 90,
        "components": {
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                "score": 25,
                "max": 25,
                "detail": "Min distance 29m, avg 36m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 109 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
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                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
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        "summary": "High-confidence STS candidate. Two tankers (DILOS and XT WALRUS) maintained close proximity (min 29m, avg 36m) for 109 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Black Sea Surveillance Zone, a known STS activity area."
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            "end_ts": "2026-09-07T15:42:07+00:00"
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        "searched_at": "2026-09-07T16:45:10.146581+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
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}

{
    "zone_id": "discovered_167",
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{
    "vessel_a": {
        "mmsi": 636023893,
        "imo": 1016226,
        "name": "KASTOS",
        "flag": "LIBERIA"
    },
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        "mmsi": 636014361,
        "imo": 9460825,
        "name": "DILOS",
        "flag": "LIBERIA"
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        "vessel_b": {
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    },
    "time_window": {
        "start": "2026-09-06T15:26:57+00:00",
        "end": "2026-09-06T15:56:58+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
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    "zone_id": "discovered_167",
    "zone_name": "Eastern Black Sea Surveillance Zone",
    "score": {
        "value": 67,
        "components": {
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                "score": 25,
                "max": 25,
                "detail": "Min distance 50m, avg 52m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 30 minutes"
            },
            "speed_stability": {
                "score": 12,
                "max": 20,
                "detail": "both very slow; somewhat variable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Black Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (KASTOS and DILOS) maintained close proximity (min 50m, avg 52m) for 30 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.6 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Black Sea Surveillance Zone, a known STS activity area."
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    "sar": {
        "status": "not_found",
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            "end_ts": "2026-09-06T15:56:58+00:00"
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        "searched_at": "2026-09-06T22:00:02.143553+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
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}

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