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        "lat": 59.9102067000000033658579923212528228759765625,
        "lon": 30.226150000000000517275111633352935314178466796875
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}

{
    "vessel_a": {
        "mmsi": 273333320,
        "imo": 6920147,
        "name": "ARCTICA",
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    },
    "vessel_b": {
        "mmsi": 273538310,
        "imo": 7802110,
        "name": "ARIES",
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    "duration_minutes": 196,
    "overlap_duration_s": 11760,
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    "speed_b_avg": 0.0899999999999999966693309261245303787291049957275390625,
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    "speed_summary": {
        "vessel_a": {
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        "vessel_b": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
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    },
    "time_window": {
        "start": "2026-09-22T07:42:25+00:00",
        "end": "2026-09-22T10:58:25+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
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    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 260m, avg 264m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 196 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: Ust-Luga\/St. Petersburg Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ARCTICA and ARIES) maintained close proximity (min 260m, avg 264m) for 196 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 Ust-Luga\/St. Petersburg Approach, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
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        "time_window": {
            "start_ts": "2026-09-22T07:42:25+00:00",
            "end_ts": "2026-09-22T10:58:25+00:00"
        },
        "searched_at": "2026-09-22T12:00:02.124684+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260922T042445_20260922T042510_009555_01303C_2F1F_COG",
        "scene_datetime": "2026-09-22T04:24:45.847967Z",
        "platform": "sentinel-1c",
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            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1367116_thumbnail_20260922120007.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273333320,
        "imo": 6920147,
        "name": "ARCTICA",
        "flag": "Russia"
    },
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        "vessel_a": {
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    "time_window": {
        "start": "2026-09-22T05:00:25+00:00",
        "end": "2026-09-22T08:11:24+00:00"
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    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
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    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 260m, avg 264m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 191 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b16m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Ust-Luga\/St. Petersburg Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ARCTICA and ARIES) maintained close proximity (min 260m, avg 264m) for 191 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Ust-Luga\/St. Petersburg Approach, a known STS activity area."
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        "time_window": {
            "start_ts": "2026-09-22T05:00:25+00:00",
            "end_ts": "2026-09-22T08:11:24+00:00"
        },
        "searched_at": "2026-09-22T10:15:01.931632+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260922T042445_20260922T042510_009555_01303C_2F1F_COG",
        "scene_datetime": "2026-09-22T04:24:45.847967Z",
        "platform": "sentinel-1c",
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        "assets": {
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            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1366541_thumbnail_20260922101522.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273333320,
        "imo": 6920147,
        "name": "ARCTICA",
        "flag": "Russia"
    },
    "vessel_b": {
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        "start": "2026-09-21T14:05:04+00:00",
        "end": "2026-09-21T15:25:04+00:00"
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    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
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    "zone_id": "russia_ust_luga_approach",
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    "score": {
        "value": 72,
        "components": {
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                "score": 15,
                "max": 25,
                "detail": "Min distance 262m, avg 268m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 80 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b17m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Ust-Luga\/St. Petersburg Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (ARCTICA and ARIES) maintained close proximity (min 262m, avg 268m) for 80 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Ust-Luga\/St. Petersburg Approach, a known STS activity area."
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            "end_ts": "2026-09-21T15:25:04+00:00"
        },
        "searched_at": "2026-09-21T20:45:01.693486+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260921T154756_20260921T154821_004678_008BD8_C6AD_COG",
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            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1362585_thumbnail_20260921204506.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273333320,
        "imo": 6920147,
        "name": "ARCTICA",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273538310,
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    "time_window": {
        "start": "2026-09-21T13:01:13+00:00",
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    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
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    "zone_id": "russia_ust_luga_approach",
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    "score": {
        "value": 82,
        "components": {
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                "score": 15,
                "max": 25,
                "detail": "Min distance 243m, avg 263m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 144 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b110m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Ust-Luga\/St. Petersburg Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ARCTICA and ARIES) maintained close proximity (min 243m, avg 263m) for 144 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Ust-Luga\/St. Petersburg Approach, a known STS activity area."
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}

{
    "zone_id": "russia_ust_luga_approach",
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    "radius_m": 10.699999999999999289457264239899814128875732421875,
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{
    "zone_id": "russia_ust_luga_approach",
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{
    "radius_m": 9.199999999999999289457264239899814128875732421875,
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{
    "vessel_a": {
        "mmsi": 273538310,
        "imo": 7802110,
        "name": "ARIES",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273333320,
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        "name": "ARCTICA",
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    "points_count": {
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    "zone_id": "russia_ust_luga_approach",
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    "score": {
        "value": 85,
        "components": {
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                "score": 15,
                "max": 25,
                "detail": "Min distance 247m, avg 263m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 141 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b19m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Ust-Luga\/St. Petersburg Approach"
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        },
        "summary": "High-confidence STS candidate. Two tankers (ARIES and ARCTICA) maintained close proximity (min 247m, avg 263m) for 141 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Ust-Luga\/St. Petersburg Approach, a known STS activity area."
    }
}

{
    "vessel_a": {
        "mmsi": 273333320,
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    },
    "time_window": {
        "start": "2026-09-21T11:06:53+00:00",
        "end": "2026-09-21T12:53:04+00:00"
    },
    "points_count": {
        "vessel_a": 19,
        "vessel_b": 19
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    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 258m, avg 260m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 106 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: Ust-Luga\/St. Petersburg Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ARCTICA and ARIES) maintained close proximity (min 258m, avg 260m) for 106 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 Ust-Luga\/St. Petersburg Approach, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
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            "lat": 59.9088437999999996463884599506855010986328125,
            "lon": 30.228882899999998556950231431983411312103271484375
        },
        "time_window": {
            "start_ts": "2026-09-21T11:06:53+00:00",
            "end_ts": "2026-09-21T12:53:04+00:00"
        },
        "searched_at": "2026-09-21T17:45:01.256094+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260921T154756_20260921T154821_004678_008BD8_C6AD_COG",
        "scene_datetime": "2026-09-21T15:47:56.493819Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 25.073927000000001186208464787341654300689697265625,
            "min_lat": 59.05168499999999909277903498150408267974853515625,
            "max_lon": 30.35587699999999955480234348215162754058837890625,
            "max_lat": 60.9810599999999993769961292855441570281982421875
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1361649_thumbnail_20260921174506.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1361649_thumbnail_20260921174506.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273333320,
        "imo": 6920147,
        "name": "ARCTICA",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273538310,
        "imo": 7802110,
        "name": "ARIES",
        "flag": "Russia"
    },
    "min_distance_m": 257.69999999999998863131622783839702606201171875,
    "avg_distance_m": 260.5,
    "distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 165.69999999999998863131622783839702606201171875,
    "overlap_duration_s": 9941,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
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    },
    "time_window": {
        "start": "2026-09-21T10:07:23+00:00",
        "end": "2026-09-21T12:53:04+00:00"
    },
    "points_count": {
        "vessel_a": 34,
        "vessel_b": 34
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    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 258m, avg 260m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 166 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: Ust-Luga\/St. Petersburg Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ARCTICA and ARIES) maintained close proximity (min 258m, avg 260m) for 166 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 Ust-Luga\/St. Petersburg Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
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        "time_window": {
            "start_ts": "2026-09-21T10:07:23+00:00",
            "end_ts": "2026-09-21T12:53:04+00:00"
        },
        "searched_at": "2026-09-21T16:45:02.140833+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "russia_ust_luga_approach",
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        "ts": "2026-09-21T10:02:23+00:00",
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        "lon": 30.22603170000000005757101462222635746002197265625
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}

{
    "radius_m": 770.5,
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{
    "vessel_a": {
        "mmsi": 273333320,
        "imo": 6920147,
        "name": "ARCTICA",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273538310,
        "imo": 7802110,
        "name": "ARIES",
        "flag": "Russia"
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    "overlap_duration_s": 11930,
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    "speed_b_std": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_summary": {
        "vessel_a": {
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        "vessel_b": {
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    },
    "time_window": {
        "start": "2026-09-21T09:34:14+00:00",
        "end": "2026-09-21T12:53:04+00:00"
    },
    "points_count": {
        "vessel_a": 45,
        "vessel_b": 45
    },
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "score": {
        "value": 85,
        "components": {
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                "score": 15,
                "max": 25,
                "detail": "Min distance 246m, avg 260m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 199 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: Ust-Luga\/St. Petersburg Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ARCTICA and ARIES) maintained close proximity (min 246m, avg 260m) for 199 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 Ust-Luga\/St. Petersburg Approach, a known STS activity area."
    }
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{
    "zone_id": "russia_ust_luga_approach",
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{
    "radius_m": 805.299999999999954525264911353588104248046875,
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    "points": 73,
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{
    "vessel_a": {
        "mmsi": 273333320,
        "imo": 6920147,
        "name": "ARCTICA",
        "flag": "Russia"
    },
    "vessel_b": {
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        "imo": 7802110,
        "name": "ARIES",
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    "avg_distance_m": 257.3999999999999772626324556767940521240234375,
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    "overlap_duration_s": 17381,
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    "speed_summary": {
        "vessel_a": {
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            "max_sog": 0
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        "vessel_b": {
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    },
    "time_window": {
        "start": "2026-09-21T08:03:23+00:00",
        "end": "2026-09-21T12:53:04+00:00"
    },
    "points_count": {
        "vessel_a": 67,
        "vessel_b": 67
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    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "score": {
        "value": 85,
        "components": {
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                "score": 15,
                "max": 25,
                "detail": "Min distance 232m, avg 257m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 290 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b17m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Ust-Luga\/St. Petersburg Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ARCTICA and ARIES) maintained close proximity (min 232m, avg 257m) for 290 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 Ust-Luga\/St. Petersburg Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
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            "end_ts": "2026-09-21T12:53:04+00:00"
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        "searched_at": "2026-09-21T14:45:16.169627+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
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}

{
    "zone_id": "russia_ust_luga_approach",
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{
    "radius_m": 808.5,
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{
    "vessel_a": {
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    "vessel_b": {
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        "imo": 7802110,
        "name": "ARIES",
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    "speed_b_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_summary": {
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    },
    "time_window": {
        "start": "2026-09-21T07:42:32+00:00",
        "end": "2026-09-21T12:53:04+00:00"
    },
    "points_count": {
        "vessel_a": 74,
        "vessel_b": 74
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    "zone_id": "russia_ust_luga_approach",
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    "score": {
        "value": 85,
        "components": {
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                "score": 15,
                "max": 25,
                "detail": "Min distance 232m, avg 258m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 310 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b17m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Ust-Luga\/St. Petersburg Approach"
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        },
        "summary": "High-confidence STS candidate. Two tankers (ARCTICA and ARIES) maintained close proximity (min 232m, avg 258m) for 310 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 Ust-Luga\/St. Petersburg Approach, a known STS activity area."
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{
    "radius_m": 833.200000000000045474735088646411895751953125,
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    "zone_id": "russia_ust_luga_approach",
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{
    "zone_id": "russia_ust_luga_approach",
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{
    "zone_id": "russia_ust_luga_approach",
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        "ts": "2026-08-28T21:03:14+00:00",
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{
    "zone_id": "russia_ust_luga_approach",
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    "points_in_zone": 13,
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{
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{
    "vessel_a": {
        "mmsi": 273333320,
        "imo": 6920147,
        "name": "ARCTICA",
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    },
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        "imo": 9157014,
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        "start": "2026-08-28T20:58:53+00:00",
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    },
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        "vessel_b": 7
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    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 318m, avg 321m"
            },
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                "score": 10,
                "max": 25,
                "detail": "Duration 47 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: Ust-Luga\/St. Petersburg Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (ARCTICA and SOLSTRAUM) maintained close proximity (min 318m, avg 321m) for 47 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 Ust-Luga\/St. Petersburg Approach, a known STS activity area."
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}

{
    "zone_id": "russia_ust_luga_approach",
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    "radius_m": 2.79999999999999982236431605997495353221893310546875,
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{
    "vessel_a": {
        "mmsi": 273333320,
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        "name": "SOLSTRAUM",
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        "vessel_a": {
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    "time_window": {
        "start": "2026-08-28T19:49:35+00:00",
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        "vessel_a": 13,
        "vessel_b": 13
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    "zone_id": "russia_ust_luga_approach",
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    "score": {
        "value": 75,
        "components": {
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                "score": 10,
                "max": 25,
                "detail": "Min distance 311m, avg 319m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 116 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: Ust-Luga\/St. Petersburg Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (ARCTICA and SOLSTRAUM) maintained close proximity (min 311m, avg 319m) for 116 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 Ust-Luga\/St. Petersburg Approach, a known STS activity area."
    }
}

{
    "zone_id": "russia_ust_luga_approach",
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{
    "radius_m": 2.79999999999999982236431605997495353221893310546875,
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{
    "vessel_a": {
        "mmsi": 273437610,
        "imo": 8230728,
        "name": "VOLGONEFT 128",
        "flag": "RUSSIA"
    },
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        "mmsi": 273333320,
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    },
    "time_window": {
        "start": "2026-08-28T17:24:37+00:00",
        "end": "2026-08-28T18:17:42+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
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    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "score": {
        "value": 80,
        "components": {
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                "score": 25,
                "max": 25,
                "detail": "Min distance 80m, avg 86m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 53 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: Ust-Luga\/St. Petersburg Approach"
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        },
        "summary": "High-confidence STS candidate. Two tankers (VOLGONEFT 128 and ARCTICA) maintained close proximity (min 80m, avg 86m) for 53 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 Ust-Luga\/St. Petersburg Approach, a known STS activity area."
    },
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        "status": "inconclusive",
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        "time_window": {
            "start_ts": "2026-08-28T17:24:37+00:00",
            "end_ts": "2026-08-28T18:17:42+00:00"
        },
        "searched_at": "2026-08-28T19:30:06.954161+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260828T154755_20260828T154820_004328_007FB7_E241_COG",
        "scene_datetime": "2026-08-28T15:47:55.906188Z",
        "platform": "sentinel-1d",
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            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1157549_thumbnail_20260828193011.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273333320,
        "imo": 6920147,
        "name": "ARCTICA",
        "flag": "Russia"
    },
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        "imo": 9157014,
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    },
    "time_window": {
        "start": "2026-08-28T17:17:54+00:00",
        "end": "2026-08-28T21:45:34+00:00"
    },
    "points_count": {
        "vessel_a": 23,
        "vessel_b": 23
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    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 311m, avg 320m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 268 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: Ust-Luga\/St. Petersburg Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ARCTICA and SOLSTRAUM) maintained close proximity (min 311m, avg 320m) for 268 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 Ust-Luga\/St. Petersburg Approach, a known STS activity area."
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            "end_ts": "2026-08-28T21:45:34+00:00"
        },
        "searched_at": "2026-08-28T23:45:11.791592+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260828T154755_20260828T154820_004328_007FB7_E241_COG",
        "scene_datetime": "2026-08-28T15:47:55.906188Z",
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            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1158963_thumbnail_20260828234515.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273333320,
        "imo": 6920147,
        "name": "ARCTICA",
        "flag": "Russia"
    },
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        "imo": 9157014,
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    "time_window": {
        "start": "2026-08-28T16:44:13+00:00",
        "end": "2026-08-28T21:45:34+00:00"
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    "points_count": {
        "vessel_a": 26,
        "vessel_b": 26
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    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "score": {
        "value": 80,
        "components": {
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                "score": 10,
                "max": 25,
                "detail": "Min distance 311m, avg 320m"
            },
            "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 \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Ust-Luga\/St. Petersburg Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ARCTICA and SOLSTRAUM) maintained close proximity (min 311m, avg 320m) for 301 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 Ust-Luga\/St. Petersburg Approach, a known STS activity area."
    }
}

{
    "zone_id": "russia_ust_luga_approach",
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{
    "radius_m": 11.5,
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{
    "zone_id": "russia_ust_luga_approach",
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        "ts": "2026-08-25T07:42:32+00:00",
        "lat": 59.88138330000000308928065351210534572601318359375,
        "lon": 30.228023300000000261888999375514686107635498046875
    }
}

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 75,
    "points_in_zone": 2,
    "first_point": {
        "ts": "2026-08-25T00:10:23+00:00",
        "lat": 59.88141999999999853798726690001785755157470703125,
        "lon": 30.228113300000000407408151659183204174041748046875
    },
    "last_point": {
        "ts": "2026-08-25T01:25:23+00:00",
        "lat": 59.881401699999997845225152559578418731689453125,
        "lon": 30.228068300000000334648575517348945140838623046875
    }
}

{
    "vessel_a": {
        "mmsi": 273333320,
        "imo": 6920147,
        "name": "ARCTICA",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273424720,
        "imo": 8724767,
        "name": "DMITRIY RULEVSKIY",
        "flag": "RUSSIA"
    },
    "min_distance_m": 188.80000000000001136868377216160297393798828125,
    "avg_distance_m": 191,
    "distance_consistency_m": 2.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 85.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 5151,
    "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": "2026-08-24T23:59:32+00:00",
        "end": "2026-08-25T01:25:23+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
    },
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 189m, avg 191m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 86 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: Ust-Luga\/St. Petersburg Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ARCTICA and DMITRIY RULEVSKIY) maintained close proximity (min 189m, avg 191m) for 86 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 Ust-Luga\/St. Petersburg Approach, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 59.88175530000000179597918759100139141082763671875,
            "lon": 30.226518299999998617977325920946896076202392578125
        },
        "time_window": {
            "start_ts": "2026-08-24T23:59:32+00:00",
            "end_ts": "2026-08-25T01:25:23+00:00"
        },
        "searched_at": "2026-08-25T02:45:02.047430+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260824T153122_20260824T153147_009139_01225D_F0AA_COG",
        "scene_datetime": "2026-08-24T15:31:22.924579Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": 29.00003099999999989222487783990800380706787109375,
            "min_lat": 59.5085260000000033642209018580615520477294921875,
            "max_lon": 34.328518000000002530214260332286357879638671875,
            "max_lat": 61.43686699999999945021045277826488018035888671875
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1119448_thumbnail_20260825024507.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1119448_thumbnail_20260825024507.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}