Solstraum

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        "vessel_a": 3,
        "vessel_b": 3
    },
    "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 234m, avg 242m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 215 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 (VOLGONEFT 128 and SOLSTRAUM) maintained close proximity (min 234m, avg 242m) for 215 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 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": 59.882869999999996935002855025231838226318359375,
            "lon": 30.22607310000000069294401328079402446746826171875
        },
        "time_window": {
            "start_ts": "2026-08-28T18:33:41+00:00",
            "end_ts": "2026-08-28T22:08:14+00:00"
        },
        "searched_at": "2026-08-29T01:15:04.931122+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",
        "bbox": {
            "min_lon": 25.077256999999999464989741682074964046478271484375,
            "min_lat": 59.0521049999999974033926264382898807525634765625,
            "max_lon": 30.358602999999998672819856437854468822479248046875,
            "max_lat": 60.98131599999999963301888783462345600128173828125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1159464_thumbnail_20260829011511.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1159464_thumbnail_20260829011511.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273437610,
        "imo": 8230728,
        "name": "VOLGONEFT 128",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273291710,
        "imo": 9157014,
        "name": "SOLSTRAUM",
        "flag": "Russia"
    },
    "min_distance_m": 242.19999999999998863131622783839702606201171875,
    "avg_distance_m": 246.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 3,
    "duration_minutes": 221.19999999999998863131622783839702606201171875,
    "overlap_duration_s": 13272,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.14000000000000001332267629550187848508358001708984375,
    "speed_b_std": 0.179999999999999993338661852249060757458209991455078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.14000000000000001332267629550187848508358001708984375,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-08-28T17:24:37+00:00",
        "end": "2026-08-28T21:05:49+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "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 242m, avg 246m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 221 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 (VOLGONEFT 128 and SOLSTRAUM) maintained close proximity (min 242m, avg 246m) for 221 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."
    }
}

{
    "vessel_a": {
        "mmsi": 273333320,
        "imo": 6920147,
        "name": "ARCTICA",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273291710,
        "imo": 9157014,
        "name": "SOLSTRAUM",
        "flag": "Russia"
    },
    "min_distance_m": 310.69999999999998863131622783839702606201171875,
    "avg_distance_m": 320,
    "distance_consistency_m": 4.0999999999999996447286321199499070644378662109375,
    "duration_minutes": 267.69999999999998863131622783839702606201171875,
    "overlap_duration_s": 16060,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.5
        }
    },
    "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
    },
    "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."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 59.88265880000000151994754560291767120361328125,
            "lon": 30.226617000000000956561052589677274227142333984375
        },
        "time_window": {
            "start_ts": "2026-08-28T17:17:54+00:00",
            "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",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 25.077256999999999464989741682074964046478271484375,
            "min_lat": 59.0521049999999974033926264382898807525634765625,
            "max_lon": 30.358602999999998672819856437854468822479248046875,
            "max_lat": 60.98131599999999963301888783462345600128173828125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/08\/event_1158963_thumbnail_20260828234515.png",
            "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"
    }
}