BALT FLOT 4

{
    "vessel_a": {
        "mmsi": 273353550,
        "name": "EUROSTAR 4 MARIA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273383250,
        "imo": 9751913,
        "name": "BALT FLOT 4",
        "flag": "RUSSIA"
    },
    "min_distance_m": 164.599999999999994315658113919198513031005859375,
    "avg_distance_m": 175.5,
    "distance_consistency_m": 9.199999999999999289457264239899814128875732421875,
    "duration_minutes": 64,
    "overlap_duration_s": 3839,
    "speed_a_avg": 0.25,
    "speed_a_std": 0.25,
    "speed_b_avg": 0.299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.14000000000000001332267629550187848508358001708984375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.25,
            "max_sog": 0.59999999999999997779553950749686919152736663818359375
        },
        "vessel_b": {
            "avg_sog": 0.299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-09-04T09:16:03+00:00",
        "end": "2026-09-04T10:20:02+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "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 165m, avg 176m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 64 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"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (EUROSTAR 4 MARIA and BALT FLOT 4) maintained close proximity (min 165m, avg 176m) for 64 minutes. Both vessels were slow-moving (avg speeds 0.2 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."
    }
}

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 103.2999999999999971578290569595992565155029296875,
    "points_in_zone": 28,
    "first_point": {
        "ts": "2026-09-04T09:07:07+00:00",
        "lat": 59.884714999999999918145476840436458587646484375,
        "lon": 30.2132466999999991230652085505425930023193359375
    },
    "last_point": {
        "ts": "2026-09-04T10:50:23+00:00",
        "lat": 59.88477329999999909659891272895038127899169921875,
        "lon": 30.21339499999999844703779672272503376007080078125
    }
}

{
    "radius_m": 17.800000000000000710542735760100185871124267578125,
    "duration_minutes": 103.2999999999999971578290569595992565155029296875,
    "points": 28,
    "centroid": {
        "lat": 59.88470696428570505531752132810652256011962890625,
        "lon": 30.213322503571436783431636285968124866485595703125
    },
    "bbox": {
        "min_lat": 59.88455330000000031986928661353886127471923828125,
        "min_lon": 30.213158299999999911733539192937314510345458984375,
        "max_lat": 59.884821700000003374952939338982105255126953125,
        "max_lon": 30.213453300000001178204911411739885807037353515625
    },
    "zone_id": "russia_ust_luga_approach"
}

{
    "vessel_a": {
        "mmsi": 273353550,
        "name": "EUROSTAR 4 MARIA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273383250,
        "imo": 9751913,
        "name": "BALT FLOT 4",
        "flag": "RUSSIA"
    },
    "min_distance_m": 164.599999999999994315658113919198513031005859375,
    "avg_distance_m": 178,
    "distance_consistency_m": 9.699999999999999289457264239899814128875732421875,
    "duration_minutes": 109,
    "overlap_duration_s": 6540,
    "speed_a_avg": 0.2600000000000000088817841970012523233890533447265625,
    "speed_a_std": 0.2200000000000000011102230246251565404236316680908203125,
    "speed_b_avg": 0.2800000000000000266453525910037569701671600341796875,
    "speed_b_std": 0.13000000000000000444089209850062616169452667236328125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.2600000000000000088817841970012523233890533447265625,
            "max_sog": 0.59999999999999997779553950749686919152736663818359375
        },
        "vessel_b": {
            "avg_sog": 0.2800000000000000266453525910037569701671600341796875,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-09-04T08:31:02+00:00",
        "end": "2026-09-04T10:20:02+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 165m, avg 178m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 109 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very 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 (EUROSTAR 4 MARIA and BALT FLOT 4) maintained close proximity (min 165m, avg 178m) for 109 minutes. Both vessels were slow-moving (avg speeds 0.3 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."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 59.88389269999999697802195441909134387969970703125,
            "lon": 30.2128617999999988796844263561069965362548828125
        },
        "time_window": {
            "start_ts": "2026-09-04T08:31:02+00:00",
            "end_ts": "2026-09-04T10:20:02+00:00"
        },
        "searched_at": "2026-09-04T14:15:04.226984+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260904T042458_20260904T042523_004423_008311_C3D2_COG",
        "scene_datetime": "2026-09-04T04:24:58.252771Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 26.619164999999998855173544143326580524444580078125,
            "min_lat": 59.33262599999999764577296446077525615692138671875,
            "max_lon": 31.930068999999999590500010526739060878753662109375,
            "max_lat": 61.26116900000000242698661168105900287628173828125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1206928_thumbnail_20260904141509.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1206928_thumbnail_20260904141509.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273353550,
        "name": "EUROSTAR 4 MARIA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273383250,
        "imo": 9751913,
        "name": "BALT FLOT 4",
        "flag": "RUSSIA"
    },
    "min_distance_m": 164.599999999999994315658113919198513031005859375,
    "avg_distance_m": 177.099999999999994315658113919198513031005859375,
    "distance_consistency_m": 8.9000000000000003552713678800500929355621337890625,
    "duration_minutes": 185.30000000000001136868377216160297393798828125,
    "overlap_duration_s": 11118,
    "speed_a_avg": 0.270000000000000017763568394002504646778106689453125,
    "speed_a_std": 0.200000000000000011102230246251565404236316680908203125,
    "speed_b_avg": 0.2800000000000000266453525910037569701671600341796875,
    "speed_b_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.270000000000000017763568394002504646778106689453125,
            "max_sog": 0.59999999999999997779553950749686919152736663818359375
        },
        "vessel_b": {
            "avg_sog": 0.2800000000000000266453525910037569701671600341796875,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-09-04T07:14:44+00:00",
        "end": "2026-09-04T10:20:02+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 165m, avg 177m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 185 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"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (EUROSTAR 4 MARIA and BALT FLOT 4) maintained close proximity (min 165m, avg 177m) for 185 minutes. Both vessels were slow-moving (avg speeds 0.3 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."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 59.8838975000000033332980819977819919586181640625,
            "lon": 30.212872499999999575948095298372209072113037109375
        },
        "time_window": {
            "start_ts": "2026-09-04T07:14:44+00:00",
            "end_ts": "2026-09-04T10:20:02+00:00"
        },
        "searched_at": "2026-09-04T13:30:04.432419+00:00",
        "scene_id": "S1D_IW_GRDH_1SDV_20260904T042458_20260904T042523_004423_008311_C3D2_COG",
        "scene_datetime": "2026-09-04T04:24:58.252771Z",
        "platform": "sentinel-1d",
        "bbox": {
            "min_lon": 26.619164999999998855173544143326580524444580078125,
            "min_lat": 59.33262599999999764577296446077525615692138671875,
            "max_lon": 31.930068999999999590500010526739060878753662109375,
            "max_lat": 61.26116900000000242698661168105900287628173828125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1206635_thumbnail_20260904133016.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1206635_thumbnail_20260904133016.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}

{
    "vessel_a": {
        "mmsi": 273353550,
        "name": "EUROSTAR 4 MARIA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273383250,
        "imo": 9751913,
        "name": "BALT FLOT 4",
        "flag": "RUSSIA"
    },
    "min_distance_m": 164.599999999999994315658113919198513031005859375,
    "avg_distance_m": 180.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 11.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 222,
    "overlap_duration_s": 13318,
    "speed_a_avg": 0.2600000000000000088817841970012523233890533447265625,
    "speed_a_std": 0.179999999999999993338661852249060757458209991455078125,
    "speed_b_avg": 0.309999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.13000000000000000444089209850062616169452667236328125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.2600000000000000088817841970012523233890533447265625,
            "max_sog": 0.59999999999999997779553950749686919152736663818359375
        },
        "vessel_b": {
            "avg_sog": 0.309999999999999997779553950749686919152736663818359375,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-09-04T06:38:04+00:00",
        "end": "2026-09-04T10:20:02+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": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 165m, avg 180m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 222 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b112m"
            },
            "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 (EUROSTAR 4 MARIA and BALT FLOT 4) maintained close proximity (min 165m, avg 180m) for 222 minutes. Both vessels were slow-moving (avg speeds 0.3 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."
    }
}

{
    "radius_m": 335,
    "duration_minutes": 268,
    "points": 54,
    "centroid": {
        "lat": 59.884843457407413325199740938842296600341796875,
        "lon": 30.2130986777777792440247139893472194671630859375
    },
    "bbox": {
        "min_lat": 59.88455330000000031986928661353886127471923828125,
        "min_lon": 30.208600000000000562749846721999347209930419921875,
        "max_lat": 59.8868317000000018879291019402444362640380859375,
        "max_lon": 30.21385670000000089885361376218497753143310546875
    },
    "zone_id": "russia_ust_luga_approach"
}

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 268,
    "points_in_zone": 54,
    "first_point": {
        "ts": "2026-09-04T06:22:24+00:00",
        "lat": 59.88647999999999882447809795849025249481201171875,
        "lon": 30.208600000000000562749846721999347209930419921875
    },
    "last_point": {
        "ts": "2026-09-04T10:50:23+00:00",
        "lat": 59.88477329999999909659891272895038127899169921875,
        "lon": 30.21339499999999844703779672272503376007080078125
    }
}