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                "max": 25,
                "detail": "Duration 135 minutes"
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            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
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        "notes": "No Sentinel-1 scenes covering AOI and time window"
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}

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{
    "vessel_a": {
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    "speed_summary": {
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        "end": "2026-07-11T02:34:35+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
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    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 455m, avg 482m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 177 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
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            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b114m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
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        "summary": "Moderate-confidence STS candidate. Two tankers (MARINA and SAVIR TIGER) maintained close proximity (min 455m, avg 482m) for 177 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
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{
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{
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{
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{
    "vessel_a": {
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    "points_count": {
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        "vessel_b": 4
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    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 65,
        "components": {
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                "score": 15,
                "max": 25,
                "detail": "Min distance 234m, avg 248m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 36 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b113m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (SPECIALITY and SAVIR TIGER) maintained close proximity (min 234m, avg 248m) for 36 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}

{
    "vessel_a": {
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        "flag": "INDONESIA"
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        "imo": 9285184,
        "name": "SPECIALITY",
        "flag": "MARSHALL ISLANDS"
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    "overlap_duration_s": 8104,
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    "speed_summary": {
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    "time_window": {
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    "points_count": {
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        "vessel_b": 5
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    "zone_id": "osint_bosphorus",
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    "score": {
        "value": 82,
        "components": {
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                "score": 15,
                "max": 25,
                "detail": "Min distance 240m, avg 282m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 135 minutes"
            },
            "speed_stability": {
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            },
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                "max": 15,
                "detail": "Distance variance \u00b131m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (SAVIR TIGER and SPECIALITY) maintained close proximity (min 240m, avg 282m) for 135 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 Bosphorus\/Dardanelles Approach, a known STS activity area."
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}

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{
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