TENDUA

{
    "zone_id": "discovered_070",
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}

{
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}

{
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    "first_point": {
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}

{
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    "first_point": {
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{
    "zone_id": "discovered_075",
    "zone_name": "Southeast Aegean Monitoring Zone",
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    "points_in_zone": 21,
    "first_point": {
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}

{
    "zone_id": "discovered_070",
    "zone_name": "Brittany Coast Surveillance Zone",
    "dwell_minutes": 255,
    "points_in_zone": 62,
    "first_point": {
        "ts": "2026-08-01T05:42:09+00:00",
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}

{
    "zone_id": "discovered_073",
    "zone_name": "Northwest Iberian Sea Monitoring Zone",
    "dwell_minutes": 152,
    "points_in_zone": 46,
    "first_point": {
        "ts": "2026-08-01T05:01:20+00:00",
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}

{
    "zone_id": "discovered_071",
    "zone_name": "Cape Peninsula Surveillance Zone",
    "dwell_minutes": 159.30000000000001136868377216160297393798828125,
    "points_in_zone": 44,
    "first_point": {
        "ts": "2026-08-01T04:20:29+00:00",
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}

{
    "zone_id": "discovered_073",
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    "dwell_minutes": 192.80000000000001136868377216160297393798828125,
    "points_in_zone": 54,
    "first_point": {
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{
    "zone_id": "discovered_023",
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    "points_in_zone": 23,
    "first_point": {
        "ts": "2026-08-01T03:00:50+00:00",
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        "lon": 31.0248516999999992549419403076171875
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}

{
    "zone_id": "discovered_023",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "dwell_minutes": 190,
    "points_in_zone": 35,
    "first_point": {
        "ts": "2026-08-01T02:05:59+00:00",
        "lat": 32.09999499999999983401721692644059658050537109375,
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        "lon": 31.0248516999999992549419403076171875
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}

{
    "zone_id": "discovered_023",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "dwell_minutes": 246.30000000000001136868377216160297393798828125,
    "points_in_zone": 49,
    "first_point": {
        "ts": "2026-08-01T01:09:39+00:00",
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        "lon": 31.0248516999999992549419403076171875
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}

{
    "zone_id": "discovered_023",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "dwell_minutes": 285.1000000000000227373675443232059478759765625,
    "points_in_zone": 58,
    "first_point": {
        "ts": "2026-08-01T00:30:49+00:00",
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        "lon": 31.0248516999999992549419403076171875
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}

{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 315.30000000000001136868377216160297393798828125,
    "points_in_zone": 70,
    "first_point": {
        "ts": "2026-08-01T00:00:39+00:00",
        "lat": 31.808403299999998381508703459985554218292236328125,
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        "lat": 32.5807649999999995316102285869419574737548828125,
        "lon": 31.0248516999999992549419403076171875
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}

{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 375.30000000000001136868377216160297393798828125,
    "points_in_zone": 89,
    "first_point": {
        "ts": "2026-07-31T23:00:38+00:00",
        "lat": 31.721869999999999123474481166340410709381103515625,
        "lon": 32.016608300000001463558874092996120452880859375
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        "lat": 32.5807649999999995316102285869419574737548828125,
        "lon": 31.0248516999999992549419403076171875
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}

{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 393.6000000000000227373675443232059478759765625,
    "points_in_zone": 95,
    "first_point": {
        "ts": "2026-07-31T22:42:19+00:00",
        "lat": 31.68026830000000160225681611336767673492431640625,
        "lon": 32.064588299999996934275259263813495635986328125
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        "lat": 32.5807649999999995316102285869419574737548828125,
        "lon": 31.0248516999999992549419403076171875
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}

{
    "zone_id": "discovered_025",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 393.69999999999998863131622783839702606201171875,
    "points_in_zone": 99,
    "first_point": {
        "ts": "2026-07-31T21:50:29+00:00",
        "lat": 31.566373299999998636167219956405460834503173828125,
        "lon": 32.1998432999999977255356498062610626220703125
    },
    "last_point": {
        "ts": "2026-08-01T04:24:09+00:00",
        "lat": 32.46081670000000229947545449249446392059326171875,
        "lon": 31.165401700000000317913873004727065563201904296875
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}

{
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "dwell_minutes": 73.400000000000005684341886080801486968994140625,
    "points_in_zone": 15,
    "first_point": {
        "ts": "2026-07-31T20:01:46+00:00",
        "lat": 31.533653300000000996305971057154238224029541015625,
        "lon": 32.3480516999999991867298376746475696563720703125
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        "ts": "2026-07-31T21:15:10+00:00",
        "lat": 31.52611999999999881083567743189632892608642578125,
        "lon": 32.28459170000000000300133251585066318511962890625
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}

{
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "dwell_minutes": 103.099999999999994315658113919198513031005859375,
    "points_in_zone": 18,
    "first_point": {
        "ts": "2026-07-31T19:32:02+00:00",
        "lat": 31.53365000000000151203494169749319553375244140625,
        "lon": 32.3481682999999975436367094516754150390625
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    "last_point": {
        "ts": "2026-07-31T21:15:10+00:00",
        "lat": 31.52611999999999881083567743189632892608642578125,
        "lon": 32.28459170000000000300133251585066318511962890625
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}

{
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "dwell_minutes": 71.400000000000005684341886080801486968994140625,
    "points_in_zone": 7,
    "first_point": {
        "ts": "2026-07-29T18:02:13+00:00",
        "lat": 31.54751830000000012432792573235929012298583984375,
        "lon": 32.3372600000000005593392415903508663177490234375
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    "last_point": {
        "ts": "2026-07-29T19:13:35+00:00",
        "lat": 31.54181330000000116342562250792980194091796875,
        "lon": 32.34595999999999804686012794263660907745361328125
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}

{
    "vessel_a": {
        "mmsi": 613445600,
        "imo": 9290517,
        "name": "VAYU 1",
        "flag": "CAMEROON"
    },
    "vessel_b": {
        "mmsi": 667002199,
        "imo": 9299862,
        "name": "TENDUA",
        "flag": "Sierra Leone"
    },
    "min_distance_m": 25.89999999999999857891452847979962825775146484375,
    "avg_distance_m": 30.699999999999999289457264239899814128875732421875,
    "distance_consistency_m": 3.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 66,
    "overlap_duration_s": 3959,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-29T17:08:42+00:00",
        "end": "2026-07-29T18:14:41+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 26m, avg 31m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 66 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: Western Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (VAYU 1 and TENDUA) maintained close proximity (min 26m, avg 31m) for 66 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 Western Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.5474794000000002824890543706715106964111328125,
            "lon": 32.3370979000000033920514397323131561279296875
        },
        "time_window": {
            "start_ts": "2026-07-29T17:08:42+00:00",
            "end_ts": "2026-07-29T18:14:41+00:00"
        },
        "searched_at": "2026-07-29T23:30:13.563724+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "dwell_minutes": 132.30000000000001136868377216160297393798828125,
    "points_in_zone": 21,
    "first_point": {
        "ts": "2026-07-29T17:01:14+00:00",
        "lat": 31.54762170000000054415068007074296474456787109375,
        "lon": 32.33741330000000147038008435629308223724365234375
    },
    "last_point": {
        "ts": "2026-07-29T19:13:35+00:00",
        "lat": 31.54181330000000116342562250792980194091796875,
        "lon": 32.34595999999999804686012794263660907745361328125
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}

{
    "radius_m": 990.299999999999954525264911353588104248046875,
    "duration_minutes": 132.30000000000001136868377216160297393798828125,
    "points": 21,
    "centroid": {
        "lat": 31.547255557142847237628302536904811859130859375,
        "lon": 32.3376907190476146070068352855741977691650390625
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    "bbox": {
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        "min_lon": 32.3371300000000019281287677586078643798828125,
        "max_lat": 31.547623300000001478338162996806204319000244140625,
        "max_lon": 32.34595999999999804686012794263660907745361328125
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    "zone_id": "discovered_156"
}

{
    "vessel_a": {
        "mmsi": 667002199,
        "imo": 9299862,
        "name": "TENDUA",
        "flag": "Sierra Leone"
    },
    "vessel_b": {
        "mmsi": 613445600,
        "imo": 9290517,
        "name": "VAYU 1",
        "flag": "CAMEROON"
    },
    "min_distance_m": 23,
    "avg_distance_m": 31.5,
    "distance_consistency_m": 4.5,
    "duration_minutes": 85.7000000000000028421709430404007434844970703125,
    "overlap_duration_s": 5139,
    "speed_a_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_a_std": 0.2399999999999999911182158029987476766109466552734375,
    "speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 1.100000000000000088817841970012523233890533447265625
        },
        "vessel_b": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-29T16:45:12+00:00",
        "end": "2026-07-29T18:10:51+00:00"
    },
    "points_count": {
        "vessel_a": 21,
        "vessel_b": 21
    },
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 23m, avg 32m"
            },
            "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 \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Western Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TENDUA and VAYU 1) maintained close proximity (min 23m, avg 32m) for 86 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 Western Black Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "dwell_minutes": 188.30000000000001136868377216160297393798828125,
    "points_in_zone": 31,
    "first_point": {
        "ts": "2026-07-29T16:05:14+00:00",
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        "lon": 32.3374850000000009231371222995221614837646484375
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    "last_point": {
        "ts": "2026-07-29T19:13:35+00:00",
        "lat": 31.54181330000000116342562250792980194091796875,
        "lon": 32.34595999999999804686012794263660907745361328125
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}

{
    "radius_m": 1004.299999999999954525264911353588104248046875,
    "duration_minutes": 188.30000000000001136868377216160297393798828125,
    "points": 31,
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{
    "zone_id": "discovered_156",
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{
    "radius_m": 1011.200000000000045474735088646411895751953125,
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{
    "vessel_a": {
        "mmsi": 613445600,
        "imo": 9290517,
        "name": "VAYU 1",
        "flag": "CAMEROON"
    },
    "vessel_b": {
        "mmsi": 667002199,
        "imo": 9299862,
        "name": "TENDUA",
        "flag": "Sierra Leone"
    },
    "min_distance_m": 25.89999999999999857891452847979962825775146484375,
    "avg_distance_m": 30.800000000000000710542735760100185871124267578125,
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    "duration_minutes": 198,
    "overlap_duration_s": 11879,
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    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.05000000000000000277555756156289135105907917022705078125,
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    "speed_summary": {
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            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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    },
    "time_window": {
        "start": "2026-07-29T14:56:42+00:00",
        "end": "2026-07-29T18:14:41+00:00"
    },
    "points_count": {
        "vessel_a": 11,
        "vessel_b": 11
    },
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 26m, avg 31m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 198 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: Western Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (VAYU 1 and TENDUA) maintained close proximity (min 26m, avg 31m) for 198 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 Western Black Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_156",
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        "lat": 31.547869999999999635065250913612544536590576171875,
        "lon": 32.337778299999996534097590483725070953369140625
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        "ts": "2026-07-29T19:13:35+00:00",
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{
    "radius_m": 1014.700000000000045474735088646411895751953125,
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{
    "vessel_a": {
        "mmsi": 613445600,
        "imo": 9290517,
        "name": "VAYU 1",
        "flag": "CAMEROON"
    },
    "vessel_b": {
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        "imo": 9299862,
        "name": "TENDUA",
        "flag": "Sierra Leone"
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        "vessel_a": {
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    "time_window": {
        "start": "2026-07-29T13:20:41+00:00",
        "end": "2026-07-29T18:14:41+00:00"
    },
    "points_count": {
        "vessel_a": 16,
        "vessel_b": 16
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    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 23m, avg 30m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 294 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: Western Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (VAYU 1 and TENDUA) maintained close proximity (min 23m, avg 30m) for 294 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 Western Black Sea Surveillance Zone, a known STS activity area."
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{
    "zone_id": "discovered_156",
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        "lon": 32.337666699999999764258973300457000732421875
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{
    "radius_m": 1016.5,
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{
    "vessel_a": {
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        "flag": "CAMEROON"
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    "vessel_b": {
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        "flag": "Sierra Leone"
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    "speed_summary": {
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    },
    "time_window": {
        "start": "2026-07-29T12:05:41+00:00",
        "end": "2026-07-29T18:14:41+00:00"
    },
    "points_count": {
        "vessel_a": 18,
        "vessel_b": 18
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    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 23m, avg 30m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 369 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: Western Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (VAYU 1 and TENDUA) maintained close proximity (min 23m, avg 30m) for 369 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 Western Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
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        "time_window": {
            "start_ts": "2026-07-29T12:05:41+00:00",
            "end_ts": "2026-07-29T18:14:41+00:00"
        },
        "searched_at": "2026-07-29T18:45:14.197017+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "dwell_minutes": 387.6000000000000227373675443232059478759765625,
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    "radius_m": 1016.3999999999999772626324556767940521240234375,
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{
    "zone_id": "discovered_156",
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    "points_in_zone": 66,
    "first_point": {
        "ts": "2026-07-29T11:50:55+00:00",
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    "last_point": {
        "ts": "2026-07-29T18:20:44+00:00",
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{
    "radius_m": 148.099999999999994315658113919198513031005859375,
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    "points": 66,
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{
    "vessel_a": {
        "mmsi": 613445600,
        "imo": 9290517,
        "name": "VAYU 1",
        "flag": "CAMEROON"
    },
    "vessel_b": {
        "mmsi": 667002199,
        "imo": 9299862,
        "name": "TENDUA",
        "flag": "Sierra Leone"
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    "distance_consistency_m": 2.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 306,
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    "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": "2026-07-29T10:11:43+00:00",
        "end": "2026-07-29T15:17:42+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 23m, avg 29m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 306 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: Western Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (VAYU 1 and TENDUA) maintained close proximity (min 23m, avg 29m) for 306 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 Western Black Sea Surveillance Zone, a known STS activity area."
    },
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            "end_ts": "2026-07-29T15:17:42+00:00"
        },
        "searched_at": "2026-07-29T16:45:01.235862+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "discovered_156",
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    "dwell_minutes": 390.30000000000001136868377216160297393798828125,
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        "ts": "2026-07-29T17:27:03+00:00",
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}

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    "radius_m": 151.19999999999998863131622783839702606201171875,
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{
    "vessel_a": {
        "mmsi": 667002199,
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        "flag": "Sierra Leone"
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    "speed_summary": {
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        },
        "vessel_b": {
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            "max_sog": 0
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    },
    "time_window": {
        "start": "2026-07-29T09:49:07+00:00",
        "end": "2026-07-29T10:42:29+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
    },
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 16m, avg 33m"
            },
            "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 \u00b114m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Western Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TENDUA and VAYU 1) maintained close proximity (min 16m, avg 33m) 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 Western Black Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "dwell_minutes": 395.3999999999999772626324556767940521240234375,
    "points_in_zone": 62,
    "first_point": {
        "ts": "2026-07-29T09:41:16+00:00",
        "lat": 31.548474999999999823785401531495153903961181640625,
        "lon": 32.3381049999999987676346790976822376251220703125
    },
    "last_point": {
        "ts": "2026-07-29T16:16:42+00:00",
        "lat": 31.5475516999999996414771885611116886138916015625,
        "lon": 32.3373500000000007048583938740193843841552734375
    }
}

{
    "radius_m": 165.599999999999994315658113919198513031005859375,
    "duration_minutes": 395.3999999999999772626324556767940521240234375,
    "points": 62,
    "centroid": {
        "lat": 31.54785965161290306468799826689064502716064453125,
        "lon": 32.33774620483870165799089591018855571746826171875
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    "bbox": {
        "min_lat": 31.546395000000000408135747420601546764373779296875,
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        "max_lon": 32.33822669999999988021954777650535106658935546875
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    "zone_id": "discovered_156"
}

{
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "dwell_minutes": 187.5,
    "points_in_zone": 6,
    "first_point": {
        "ts": "2026-07-28T23:02:06+00:00",
        "lat": 31.54851000000000027512214728631079196929931640625,
        "lon": 32.3381049999999987676346790976822376251220703125
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    "last_point": {
        "ts": "2026-07-29T02:09:34+00:00",
        "lat": 31.548628300000000734826244297437369823455810546875,
        "lon": 32.33812830000000104746504803188145160675048828125
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}

{
    "vessel_a": {
        "mmsi": 613445600,
        "imo": 9290517,
        "name": "VAYU 1",
        "flag": "CAMEROON"
    },
    "vessel_b": {
        "mmsi": 667002199,
        "imo": 9299862,
        "name": "TENDUA",
        "flag": "Sierra Leone"
    },
    "min_distance_m": 22.300000000000000710542735760100185871124267578125,
    "avg_distance_m": 28.800000000000000710542735760100185871124267578125,
    "distance_consistency_m": 3.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 57,
    "overlap_duration_s": 3421,
    "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": "2026-07-28T22:26:41+00:00",
        "end": "2026-07-28T23:23:42+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 22m, avg 29m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 57 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: Western Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (VAYU 1 and TENDUA) maintained close proximity (min 22m, avg 29m) for 57 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 Western Black Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "dwell_minutes": 231.099999999999994315658113919198513031005859375,
    "points_in_zone": 15,
    "first_point": {
        "ts": "2026-07-28T22:18:26+00:00",
        "lat": 31.54845830000000006521077011711895465850830078125,
        "lon": 32.33809500000000269892552751116454601287841796875
    },
    "last_point": {
        "ts": "2026-07-29T02:09:34+00:00",
        "lat": 31.548628300000000734826244297437369823455810546875,
        "lon": 32.33812830000000104746504803188145160675048828125
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}

{
    "radius_m": 13.199999999999999289457264239899814128875732421875,
    "duration_minutes": 231.099999999999994315658113919198513031005859375,
    "points": 15,
    "centroid": {
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        "lon": 32.33811076666666650680781458504498004913330078125
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    "bbox": {
        "min_lat": 31.54845830000000006521077011711895465850830078125,
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        "max_lat": 31.548641700000001009129846352152526378631591796875,
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}

{
    "vessel_a": {
        "mmsi": 613445600,
        "imo": 9290517,
        "name": "VAYU 1",
        "flag": "CAMEROON"
    },
    "vessel_b": {
        "mmsi": 667002199,
        "imo": 9299862,
        "name": "TENDUA",
        "flag": "Sierra Leone"
    },
    "min_distance_m": 22.300000000000000710542735760100185871124267578125,
    "avg_distance_m": 28.300000000000000710542735760100185871124267578125,
    "distance_consistency_m": 3.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 141,
    "overlap_duration_s": 8461,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-28T21:02:41+00:00",
        "end": "2026-07-28T23:23:42+00:00"
    },
    "points_count": {
        "vessel_a": 11,
        "vessel_b": 11
    },
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 22m, avg 28m"
            },
            "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 \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Western Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (VAYU 1 and TENDUA) maintained close proximity (min 22m, avg 28m) for 141 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 Western Black Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "dwell_minutes": 305.69999999999998863131622783839702606201171875,
    "points_in_zone": 29,
    "first_point": {
        "ts": "2026-07-28T21:03:50+00:00",
        "lat": 31.54810499999999962028596200980246067047119140625,
        "lon": 32.3378833000000014408215065486729145050048828125
    },
    "last_point": {
        "ts": "2026-07-29T02:09:34+00:00",
        "lat": 31.548628300000000734826244297437369823455810546875,
        "lon": 32.33812830000000104746504803188145160675048828125
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}

{
    "radius_m": 32.2000000000000028421709430404007434844970703125,
    "duration_minutes": 305.69999999999998863131622783839702606201171875,
    "points": 29,
    "centroid": {
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        "lon": 32.3380271206896594549107248894870281219482421875
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    "bbox": {
        "min_lat": 31.54810499999999962028596200980246067047119140625,
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        "max_lon": 32.33814670000000290883690468035638332366943359375
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    "zone_id": "discovered_156"
}

{
    "vessel_a": {
        "mmsi": 613445600,
        "imo": 9290517,
        "name": "VAYU 1",
        "flag": "CAMEROON"
    },
    "vessel_b": {
        "mmsi": 667002199,
        "imo": 9299862,
        "name": "TENDUA",
        "flag": "Sierra Leone"
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    "min_distance_m": 22.300000000000000710542735760100185871124267578125,
    "avg_distance_m": 28.39999999999999857891452847979962825775146484375,
    "distance_consistency_m": 3.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 153,
    "overlap_duration_s": 9180,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
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    },
    "time_window": {
        "start": "2026-07-28T20:50:42+00:00",
        "end": "2026-07-28T23:23:42+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 22m, avg 28m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 153 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: Western Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (VAYU 1 and TENDUA) maintained close proximity (min 22m, avg 28m) for 153 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 Western Black Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "dwell_minutes": 334.3999999999999772626324556767940521240234375,
    "points_in_zone": 37,
    "first_point": {
        "ts": "2026-07-28T20:35:11+00:00",
        "lat": 31.54801499999999947476680972613394260406494140625,
        "lon": 32.3378517000000016423655324615538120269775390625
    },
    "last_point": {
        "ts": "2026-07-29T02:09:34+00:00",
        "lat": 31.548628300000000734826244297437369823455810546875,
        "lon": 32.33812830000000104746504803188145160675048828125
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}

{
    "radius_m": 40.2999999999999971578290569595992565155029296875,
    "duration_minutes": 334.3999999999999772626324556767940521240234375,
    "points": 37,
    "centroid": {
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        "lon": 32.33799301621621680169482715427875518798828125
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    "bbox": {
        "min_lat": 31.54801499999999947476680972613394260406494140625,
        "min_lon": 32.33782670000000081245161709375679492950439453125,
        "max_lat": 31.548641700000001009129846352152526378631591796875,
        "max_lon": 32.33814670000000290883690468035638332366943359375
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}

{
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "dwell_minutes": 398.8999999999999772626324556767940521240234375,
    "points_in_zone": 38,
    "first_point": {
        "ts": "2026-07-28T19:30:41+00:00",
        "lat": 31.547978300000000473346517537720501422882080078125,
        "lon": 32.3378000000000014324541552923619747161865234375
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    "last_point": {
        "ts": "2026-07-29T02:09:34+00:00",
        "lat": 31.548628300000000734826244297437369823455810546875,
        "lon": 32.33812830000000104746504803188145160675048828125
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}

{
    "radius_m": 41.2999999999999971578290569595992565155029296875,
    "duration_minutes": 398.8999999999999772626324556767940521240234375,
    "points": 38,
    "centroid": {
        "lat": 31.5482919236842036525558796711266040802001953125,
        "lon": 32.33798793684210437504589208401739597320556640625
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    "bbox": {
        "min_lat": 31.547978300000000473346517537720501422882080078125,
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{
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "dwell_minutes": 315.6000000000000227373675443232059478759765625,
    "points_in_zone": 55,
    "first_point": {
        "ts": "2026-07-28T18:01:31+00:00",
        "lat": 31.548024999999999096189640113152563571929931640625,
        "lon": 32.33785830000000061090759118087589740753173828125
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    "last_point": {
        "ts": "2026-07-28T23:17:07+00:00",
        "lat": 31.548488299999998929479261278174817562103271484375,
        "lon": 32.33807829999999938763721729628741741180419921875
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}

{
    "radius_m": 45.2999999999999971578290569595992565155029296875,
    "duration_minutes": 315.6000000000000227373675443232059478759765625,
    "points": 55,
    "centroid": {
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        "lon": 32.33793847999999826470229891128838062286376953125
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    "bbox": {
        "min_lat": 31.547978300000000473346517537720501422882080078125,
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}

{
    "vessel_a": {
        "mmsi": 613445600,
        "imo": 9290517,
        "name": "VAYU 1",
        "flag": "CAMEROON"
    },
    "vessel_b": {
        "mmsi": 667002199,
        "imo": 9299862,
        "name": "TENDUA",
        "flag": "Sierra Leone"
    },
    "min_distance_m": 22.800000000000000710542735760100185871124267578125,
    "avg_distance_m": 30.199999999999999289457264239899814128875732421875,
    "distance_consistency_m": 2.5,
    "duration_minutes": 357,
    "overlap_duration_s": 21419,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-28T17:11:42+00:00",
        "end": "2026-07-28T23:08:41+00:00"
    },
    "points_count": {
        "vessel_a": 17,
        "vessel_b": 17
    },
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 23m, avg 30m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 357 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: Western Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (VAYU 1 and TENDUA) maintained close proximity (min 23m, avg 30m) for 357 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 Western Black Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.5481414999999998372004483826458454132080078125,
            "lon": 32.33787219999999962283254717476665973663330078125
        },
        "time_window": {
            "start_ts": "2026-07-28T17:11:42+00:00",
            "end_ts": "2026-07-28T23:08:41+00:00"
        },
        "searched_at": "2026-07-28T23:45:04.337981+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
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{
    "radius_m": 48.7999999999999971578290569595992565155029296875,
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{
    "vessel_a": {
        "mmsi": 613445600,
        "imo": 9290517,
        "name": "VAYU 1",
        "flag": "CAMEROON"
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    "vessel_b": {
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        "imo": 9299862,
        "name": "TENDUA",
        "flag": "Sierra Leone"
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    "time_window": {
        "start": "2026-07-28T16:56:41+00:00",
        "end": "2026-07-28T23:08:41+00:00"
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        "vessel_a": 20,
        "vessel_b": 20
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    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
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                "score": 25,
                "max": 25,
                "detail": "Min distance 23m, avg 30m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 372 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: Western Black Sea Surveillance Zone"
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        },
        "summary": "High-confidence STS candidate. Two tankers (VAYU 1 and TENDUA) maintained close proximity (min 23m, avg 30m) for 372 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 Western Black Sea Surveillance Zone, a known STS activity area."
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}

{
    "zone_id": "discovered_156",
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{
    "radius_m": 50.2999999999999971578290569595992565155029296875,
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{
    "zone_id": "discovered_156",
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    "radius_m": 48.7999999999999971578290569595992565155029296875,
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{
    "vessel_a": {
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    },
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    "duration_minutes": 375,
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    "speed_b_std": 0,
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            "max_sog": 0
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        "vessel_b": {
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            "max_sog": 0
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    },
    "time_window": {
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        "end": "2026-07-28T20:41:42+00:00"
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        "vessel_a": 13,
        "vessel_b": 13
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    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
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                "score": 25,
                "max": 25,
                "detail": "Min distance 29m, avg 31m"
            },
            "duration": {
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                "max": 25,
                "detail": "Duration 375 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: Western Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (VAYU 1 and TENDUA) maintained close proximity (min 29m, avg 31m) for 375 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 Western Black Sea Surveillance Zone, a known STS activity area."
    }
}

{
    "zone_id": "discovered_156",
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    "radius_m": 18.39999999999999857891452847979962825775146484375,
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{
    "vessel_a": {
        "mmsi": 613445600,
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    "speed_summary": {
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        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
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    },
    "time_window": {
        "start": "2026-07-28T13:38:41+00:00",
        "end": "2026-07-28T18:26:41+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
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    "zone_id": "discovered_156",
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    "score": {
        "value": 95,
        "components": {
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                "max": 25,
                "detail": "Min distance 29m, avg 31m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 288 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: Western Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (VAYU 1 and TENDUA) maintained close proximity (min 29m, avg 31m) for 288 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 Western Black Sea Surveillance Zone, a known STS activity area."
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}

{
    "zone_id": "discovered_156",
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{
    "radius_m": 14.9000000000000003552713678800500929355621337890625,
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{
    "zone_id": "discovered_156",
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    "dwell_minutes": 388,
    "points_in_zone": 80,
    "first_point": {
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{
    "radius_m": 14.9000000000000003552713678800500929355621337890625,
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{
    "zone_id": "discovered_156",
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    "dwell_minutes": 393,
    "points_in_zone": 74,
    "first_point": {
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{
    "radius_m": 13.9000000000000003552713678800500929355621337890625,
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{
    "vessel_a": {
        "mmsi": 613445600,
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        "flag": "CAMEROON"
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    "vessel_b": {
        "mmsi": 667002199,
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    "speed_summary": {
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            "max_sog": 0
        },
        "vessel_b": {
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            "max_sog": 0
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    },
    "time_window": {
        "start": "2026-07-28T10:11:41+00:00",
        "end": "2026-07-28T14:26:41+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
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    "zone_id": "discovered_156",
    "zone_name": "Western Black Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 27m, avg 32m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 255 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: Western Black Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (VAYU 1 and TENDUA) maintained close proximity (min 27m, avg 32m) for 255 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 Western Black Sea Surveillance Zone, a known STS activity area."
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            "end_ts": "2026-07-28T14:26:41+00:00"
        },
        "searched_at": "2026-07-28T14:45:02.081767+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

{
    "zone_id": "discovered_156",
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{
    "radius_m": 20.89999999999999857891452847979962825775146484375,
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{
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