WOOWONHO

IMO 9281176

Vessel information

Vessel Name WOOWONHO
IMO Number 9281176
MMSI 440400900
Vessel Type Tanker
Flag 🏳️ REPUBLIC OF KOREA
Call Sign SSD
Length 60 m
Beam 10 m

Detected Events (47)

Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 28, 2026 16:15 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 1h 25m
  • Data Points: 22 AIS positions
  • Period: 2026-07-28T16:15:40+00:00 to 2026-07-28T17:41:22+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 85.7000000000000028421709430404007434844970703125,
    "points_in_zone": 22,
    "first_point": {
        "ts": "2026-07-28T16:15:40+00:00",
        "lat": 34.8527916999999973768353811465203762054443359375,
        "lon": 128.857609999999993988240021280944347381591796875
    },
    "last_point": {
        "ts": "2026-07-28T17:41:22+00:00",
        "lat": 35.02917670000000072150214691646397113800048828125,
        "lon": 129.09266170000000784057192504405975341796875
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 24, 2026 04:04 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 1h 14m
  • Data Points: 26 AIS positions
  • Period: 2026-07-24T04:04:27+00:00 to 2026-07-24T05:18:28+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 74,
    "points_in_zone": 26,
    "first_point": {
        "ts": "2026-07-24T04:04:27+00:00",
        "lat": 35.008589999999998099156073294579982757568359375,
        "lon": 129.0917233000000123865902423858642578125
    },
    "last_point": {
        "ts": "2026-07-24T05:18:28+00:00",
        "lat": 34.8868216999999987137925927527248859405517578125,
        "lon": 128.92203169999999090578057803213596343994140625
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 24, 2026 03:54 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 1h 24m
  • Data Points: 30 AIS positions
  • Period: 2026-07-24T03:54:26+00:00 to 2026-07-24T05:18:28+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 84,
    "points_in_zone": 30,
    "first_point": {
        "ts": "2026-07-24T03:54:26+00:00",
        "lat": 35.02867169999999674701030016876757144927978515625,
        "lon": 129.109164999999990186552167870104312896728515625
    },
    "last_point": {
        "ts": "2026-07-24T05:18:28+00:00",
        "lat": 34.8868216999999987137925927527248859405517578125,
        "lon": 128.92203169999999090578057803213596343994140625
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 23, 2026 04:01 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 1h 31m
  • Data Points: 17 AIS positions
  • Period: 2026-07-23T04:01:01+00:00 to 2026-07-23T05:32:06+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 91.099999999999994315658113919198513031005859375,
    "points_in_zone": 17,
    "first_point": {
        "ts": "2026-07-23T04:01:01+00:00",
        "lat": 35.0291832999999996900442056357860565185546875,
        "lon": 129.072813300000007075141184031963348388671875
    },
    "last_point": {
        "ts": "2026-07-23T05:32:06+00:00",
        "lat": 35.02910829999999720030245953239500522613525390625,
        "lon": 129.07283169999999472565832547843456268310546875
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 23, 2026 04:01 UTC 75.0% ▼
  • Duration: 1h 31m
  • Radius: 13 meters
  • Data Points: 17 AIS positions
  • Centroid: 35.0291, 129.0728
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 13.0999999999999996447286321199499070644378662109375,
    "duration_minutes": 91.099999999999994315658113919198513031005859375,
    "points": 17,
    "centroid": {
        "lat": 35.0290699882352924987571896053850650787353515625,
        "lon": 129.0728417588235288349096663296222686767578125
    },
    "bbox": {
        "min_lat": 35.0289982999999978119376464746892452239990234375,
        "min_lon": 129.07278500000001031366991810500621795654296875,
        "max_lat": 35.0291832999999996900442056357860565185546875,
        "max_lon": 129.07287669999999479841790162026882171630859375
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 23, 2026 03:02 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 2h 29m
  • Data Points: 35 AIS positions
  • Period: 2026-07-23T03:02:16+00:00 to 2026-07-23T05:32:06+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 149.80000000000001136868377216160297393798828125,
    "points_in_zone": 35,
    "first_point": {
        "ts": "2026-07-23T03:02:16+00:00",
        "lat": 35.0295100000000019235812942497432231903076171875,
        "lon": 129.072623300000003609966370277106761932373046875
    },
    "last_point": {
        "ts": "2026-07-23T05:32:06+00:00",
        "lat": 35.02910829999999720030245953239500522613525390625,
        "lon": 129.07283169999999472565832547843456268310546875
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 23, 2026 03:02 UTC 75.0% ▼
  • Duration: 2h 29m
  • Radius: 31 meters
  • Data Points: 35 AIS positions
  • Centroid: 35.0293, 129.0727
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 31.300000000000000710542735760100185871124267578125,
    "duration_minutes": 149.80000000000001136868377216160297393798828125,
    "points": 35,
    "centroid": {
        "lat": 35.02925903999999945881427265703678131103515625,
        "lon": 129.07274685428575367041048593819141387939453125
    },
    "bbox": {
        "min_lat": 35.0289982999999978119376464746892452239990234375,
        "min_lon": 129.07261330000000043582986108958721160888671875,
        "max_lat": 35.0295100000000019235812942497432231903076171875,
        "max_lon": 129.07287669999999479841790162026882171630859375
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 23, 2026 02:04 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 3h 27m
  • Data Points: 53 AIS positions
  • Period: 2026-07-23T02:04:55+00:00 to 2026-07-23T05:32:06+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 207.19999999999998863131622783839702606201171875,
    "points_in_zone": 53,
    "first_point": {
        "ts": "2026-07-23T02:04:55+00:00",
        "lat": 35.02980670000000174013621290214359760284423828125,
        "lon": 129.072374999999993860910763032734394073486328125
    },
    "last_point": {
        "ts": "2026-07-23T05:32:06+00:00",
        "lat": 35.02910829999999720030245953239500522613525390625,
        "lon": 129.07283169999999472565832547843456268310546875
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 23, 2026 02:04 UTC 75.0% ▼
  • Duration: 3h 27m
  • Radius: 58 meters
  • Data Points: 53 AIS positions
  • Centroid: 35.0294, 129.0726
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 58.39999999999999857891452847979962825775146484375,
    "duration_minutes": 207.19999999999998863131622783839702606201171875,
    "points": 53,
    "centroid": {
        "lat": 35.02944556226415073751923046074807643890380859375,
        "lon": 129.072616194339616413344629108905792236328125
    },
    "bbox": {
        "min_lat": 35.0289982999999978119376464746892452239990234375,
        "min_lon": 129.072280000000006339178071357309818267822265625,
        "max_lat": 35.02990170000000347272361977957189083099365234375,
        "max_lon": 129.07287669999999479841790162026882171630859375
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 23, 2026 01:10 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 4h 21m
  • Data Points: 70 AIS positions
  • Period: 2026-07-23T01:10:34+00:00 to 2026-07-23T05:32:06+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 261.5,
    "points_in_zone": 70,
    "first_point": {
        "ts": "2026-07-23T01:10:34+00:00",
        "lat": 35.029431700000003502282197587192058563232421875,
        "lon": 129.076973299999991695585777051746845245361328125
    },
    "last_point": {
        "ts": "2026-07-23T05:32:06+00:00",
        "lat": 35.02910829999999720030245953239500522613525390625,
        "lon": 129.07283169999999472565832547843456268310546875
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 23, 2026 01:10 UTC 75.0% ▼
  • Duration: 4h 21m
  • Radius: 403 meters
  • Data Points: 70 AIS positions
  • Centroid: 35.0294, 129.0726
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 403.1000000000000227373675443232059478759765625,
    "duration_minutes": 261.5,
    "points": 70,
    "centroid": {
        "lat": 35.0293812114285714187644771300256252288818359375,
        "lon": 129.072556045714236461208201944828033447265625
    },
    "bbox": {
        "min_lat": 35.0262632999999965477400110103189945220947265625,
        "min_lon": 129.0700199999999995270627550780773162841796875,
        "max_lat": 35.02990170000000347272361977957189083099365234375,
        "max_lon": 129.076973299999991695585777051746845245361328125
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Ais Gap🛰️✓ Gulf of Cádiz Sanctions Monitoring Zone
Jul 22, 2026 20:16 UTC 70.0% ▼
  • Gap Duration: 4h 54m
  • Last Seen: 2026-07-22T20:16:12+00:00 at 35.1806, 129.2458 (Zone: Gulf of Cádiz Sanctions Monitoring Zone)
  • Next Seen: 2026-07-23T01:10:34+00:00 at 35.0294, 129.0770

🛰️ Gap Corroboration

🛰️ Imagery Available

These are snapshots that may corroborate presence during the gap. They do not reconstruct a continuous route.

SAR Imagery (Sentinel-1)

Status: ✗ No SAR coverage

No Sentinel-1 scenes covering corridor and time window

VIIRS Thermal Anomaly

Status: ✓ Signal detected

2 thermal/light anomalies detected

Detections: 2 thermal anomalies

View detections
LocationBrightnessTime
35.0830, 128.9884309.8 K2026-07-22T18:04:00+00:00
35.0852, 128.9880303.8 K2026-07-22T16:22:00+00:00

Searched: 2026-07-23T01:30:04.692232+00:00

Show Raw Evidence JSON
{
    "gap_minutes": 294.3999999999999772626324556767940521240234375,
    "last_seen": {
        "ts": "2026-07-22T20:16:12+00:00",
        "lat": 35.1806217000000032157913665287196636199951171875,
        "lon": 129.2458182999999962703441269695758819580078125,
        "sog": 7.29999999999999982236431605997495353221893310546875,
        "zone_id": "discovered_002"
    },
    "next_seen": {
        "ts": "2026-07-23T01:10:34+00:00",
        "lat": 35.029431700000003502282197587192058563232421875,
        "lon": 129.076973299999991695585777051746845245361328125,
        "zone_ids": [
            "discovered_001"
        ]
    },
    "gap_enrichment": {
        "status": "done",
        "corridor": {
            "start": {
                "lat": 35.1806217000000032157913665287196636199951171875,
                "lon": 129.2458182999999962703441269695758819580078125,
                "ts": "2026-07-22T20:16:12+00:00"
            },
            "end": {
                "lat": 35.029431700000003502282197587192058563232421875,
                "lon": 129.076973299999991695585777051746845245361328125,
                "ts": "2026-07-23T01:10:34+00:00"
            },
            "bbox": {
                "min_lat": 34.84925199999999989586285664699971675872802734375,
                "min_lon": 128.856730999999996356564224697649478912353515625,
                "max_lat": 35.36080199999999962301444611512124538421630859375,
                "max_lon": 129.466060999999996283804648555815219879150390625
            },
            "buffer_km": 20
        },
        "sar": {
            "status": "not_found",
            "notes": "No Sentinel-1 scenes covering corridor and time window"
        },
        "viirs": {
            "status": "signal",
            "dataset": "VIIRS_SNPP",
            "detection_count": 2,
            "top_detections": [
                {
                    "lat": 35.08303000000000082536644185893237590789794921875,
                    "lon": 128.988390000000009649738785810768604278564453125,
                    "brightness": 309.81999999999999317878973670303821563720703125,
                    "frp": 3.29000000000000003552713678800500929355621337890625,
                    "confidence": "n",
                    "acq_date": "2026-07-22",
                    "acq_time": "1804",
                    "satellite": "N",
                    "daynight": "N",
                    "acq_datetime": "2026-07-22T18:04:00+00:00"
                },
                {
                    "lat": 35.08523000000000280351741821505129337310791015625,
                    "lon": 128.987989999999996371116139926016330718994140625,
                    "brightness": 303.80000000000001136868377216160297393798828125,
                    "frp": 1.5100000000000000088817841970012523233890533447265625,
                    "confidence": "n",
                    "acq_date": "2026-07-22",
                    "acq_time": "1622",
                    "satellite": "N",
                    "daynight": "N",
                    "acq_datetime": "2026-07-22T16:22:00+00:00"
                }
            ],
            "notes": "2 thermal\/light anomalies detected"
        },
        "searched_at": "2026-07-23T01:30:04.692232+00:00"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Strait of Gibraltar Surveillance Zone
Jul 19, 2026 00:12 UTC 85/100 ▼
Vessel A: PHOENIX (PHOENIX) RUSSIA
Vessel B: IMO 9281176 (WOOWONHO) REPUBLIC OF KOREA
  • Minimum Distance: 70 meters
  • Average Distance: 81 meters
  • Duration: 1h 3m
  • Period: 2026-07-19T00:12:09+00:00 to 2026-07-19T01:15:11+00:00
  • Vessel A Avg Speed: 0.3 knots
  • Vessel B Avg Speed: 0.3 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (PHOENIX and WOOWONHO) maintained close proximity (min 70m, avg 81m) for 63 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 Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 70m, avg 81m
Duration15/25Duration 63 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±15m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Strait of Gibraltar Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-19T06:00:01.762985+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273270560,
        "imo": 9332810,
        "name": "PHOENIX",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 440400900,
        "imo": 9281176,
        "name": "WOOWONHO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 70,
    "avg_distance_m": 80.599999999999994315658113919198513031005859375,
    "distance_consistency_m": 15,
    "duration_minutes": 63,
    "overlap_duration_s": 3782,
    "speed_a_avg": 0.299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.2800000000000000266453525910037569701671600341796875,
    "speed_b_avg": 0.299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.2800000000000000266453525910037569701671600341796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-07-19T00:12:09+00:00",
        "end": "2026-07-19T01:15:11+00:00"
    },
    "points_count": {
        "vessel_a": 2,
        "vessel_b": 2
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 70m, avg 81m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 63 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b115m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (PHOENIX and WOOWONHO) maintained close proximity (min 70m, avg 81m) for 63 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 Strait of Gibraltar Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 35.02872289999999821930032339878380298614501953125,
            "lon": 129.07004960000000437503331340849399566650390625
        },
        "time_window": {
            "start_ts": "2026-07-19T00:12:09+00:00",
            "end_ts": "2026-07-19T01:15:11+00:00"
        },
        "searched_at": "2026-07-19T06:00:01.762985+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 19, 2026 00:05 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 1h 28m
  • Data Points: 22 AIS positions
  • Period: 2026-07-19T00:05:07+00:00 to 2026-07-19T01:33:33+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 88.400000000000005684341886080801486968994140625,
    "points_in_zone": 22,
    "first_point": {
        "ts": "2026-07-19T00:05:07+00:00",
        "lat": 35.0284582999999969388227327726781368255615234375,
        "lon": 129.0697132999999894309439696371555328369140625
    },
    "last_point": {
        "ts": "2026-07-19T01:33:33+00:00",
        "lat": 35.02648169999999794299583300016820430755615234375,
        "lon": 129.072071700000009286668500863015651702880859375
    }
}
Methodology: 2026.01.18
Sts Strait of Gibraltar Surveillance Zone
Jul 18, 2026 23:23 UTC 82/100 ▼
Vessel A: MMSI 440156960 (SUNGJIN ACE) REPUBLIC OF KOREA
Vessel B: IMO 9281176 (WOOWONHO) REPUBLIC OF KOREA
  • Minimum Distance: 39 meters
  • Average Distance: 65 meters
  • Duration: 1h 17m
  • Period: 2026-07-18T23:24:17+00:00 to 2026-07-19T00:41:18+00:00
  • Vessel A Avg Speed: 0.3 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 82/100

High-confidence STS candidate. Two tankers (SUNGJIN ACE and WOOWONHO) maintained close proximity (min 38m, avg 65m) for 77 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 38m, avg 65m
Duration15/25Duration 77 minutes
Speed Stability17/20both nearly stationary; stable speeds
Distance Consistency15/15Distance variance ±10m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440156960,
        "name": "SUNGJIN ACE",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440400900,
        "imo": 9281176,
        "name": "WOOWONHO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 38.5,
    "avg_distance_m": 65.2000000000000028421709430404007434844970703125,
    "distance_consistency_m": 10.5,
    "duration_minutes": 77,
    "overlap_duration_s": 4621,
    "speed_a_avg": 0.2800000000000000266453525910037569701671600341796875,
    "speed_a_std": 0.460000000000000019984014443252817727625370025634765625,
    "speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.2800000000000000266453525910037569701671600341796875,
            "max_sog": 1.5
        },
        "vessel_b": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-18T23:24:17+00:00",
        "end": "2026-07-19T00:41:18+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 82,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 38m, avg 65m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 77 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: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (SUNGJIN ACE and WOOWONHO) maintained close proximity (min 38m, avg 65m) for 77 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Strait of Gibraltar Surveillance Zone
Jul 18, 2026 23:12 UTC 95/100 ▼
Vessel A: PHOENIX (PHOENIX) RUSSIA
Vessel B: IMO 9281176 (WOOWONHO) REPUBLIC OF KOREA
  • Minimum Distance: 54 meters
  • Average Distance: 72 meters
  • Duration: 2h 3m
  • Period: 2026-07-18T23:12:06+00:00 to 2026-07-19T01:15:11+00:00
  • Vessel A Avg Speed: 0.3 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (PHOENIX and WOOWONHO) maintained close proximity (min 54m, avg 72m) for 123 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 54m, avg 72m
Duration25/25Duration 123 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±19m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Strait of Gibraltar Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-19T05:45:04.900026+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273270560,
        "imo": 9332810,
        "name": "PHOENIX",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 440400900,
        "imo": 9281176,
        "name": "WOOWONHO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 53.5,
    "avg_distance_m": 71.599999999999994315658113919198513031005859375,
    "distance_consistency_m": 18.89999999999999857891452847979962825775146484375,
    "duration_minutes": 123.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 7385,
    "speed_a_avg": 0.299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.200000000000000011102230246251565404236316680908203125,
    "speed_b_avg": 0.2300000000000000099920072216264088638126850128173828125,
    "speed_b_std": 0.2300000000000000099920072216264088638126850128173828125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.2300000000000000099920072216264088638126850128173828125,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-07-18T23:12:06+00:00",
        "end": "2026-07-19T01:15:11+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 54m, avg 72m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 123 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b119m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (PHOENIX and WOOWONHO) maintained close proximity (min 54m, avg 72m) for 123 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 35.028452799999996614133124239742755889892578125,
            "lon": 129.069416399999994382596923969686031341552734375
        },
        "time_window": {
            "start_ts": "2026-07-18T23:12:06+00:00",
            "end_ts": "2026-07-19T01:15:11+00:00"
        },
        "searched_at": "2026-07-19T05:45:04.900026+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 18, 2026 23:03 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 2h 29m
  • Data Points: 35 AIS positions
  • Period: 2026-07-18T23:03:45+00:00 to 2026-07-19T01:33:33+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 149.80000000000001136868377216160297393798828125,
    "points_in_zone": 35,
    "first_point": {
        "ts": "2026-07-18T23:03:45+00:00",
        "lat": 35.02796000000000020691004465334117412567138671875,
        "lon": 129.069448300000004792309482581913471221923828125
    },
    "last_point": {
        "ts": "2026-07-19T01:33:33+00:00",
        "lat": 35.02648169999999794299583300016820430755615234375,
        "lon": 129.072071700000009286668500863015651702880859375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 18, 2026 23:03 UTC 75.0% ▼
  • Duration: 2h 29m
  • Radius: 284 meters
  • Data Points: 35 AIS positions
  • Centroid: 35.0283, 129.0698
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 284.1000000000000227373675443232059478759765625,
    "duration_minutes": 149.80000000000001136868377216160297393798828125,
    "points": 35,
    "centroid": {
        "lat": 35.028255137142849662268417887389659881591796875,
        "lon": 129.06982599428573621480609290301799774169921875
    },
    "bbox": {
        "min_lat": 35.02648169999999794299583300016820430755615234375,
        "min_lon": 129.068369999999987385308486409485340118408203125,
        "max_lat": 35.02862329999999957408363115973770618438720703125,
        "max_lon": 129.072071700000009286668500863015651702880859375
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Sts Strait of Gibraltar Surveillance Zone
Jul 18, 2026 22:36 UTC 95/100 ▼
Vessel A: PHOENIX (PHOENIX) RUSSIA
Vessel B: IMO 9281176 (WOOWONHO) REPUBLIC OF KOREA
  • Minimum Distance: 50 meters
  • Average Distance: 63 meters
  • Duration: 2h 39m
  • Period: 2026-07-18T22:36:08+00:00 to 2026-07-19T01:15:11+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (PHOENIX and WOOWONHO) maintained close proximity (min 50m, avg 62m) for 159 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 50m, avg 62m
Duration25/25Duration 159 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±10m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273270560,
        "imo": 9332810,
        "name": "PHOENIX",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 440400900,
        "imo": 9281176,
        "name": "WOOWONHO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 50,
    "avg_distance_m": 62.5,
    "distance_consistency_m": 10.5,
    "duration_minutes": 159.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 9543,
    "speed_a_avg": 0.2399999999999999911182158029987476766109466552734375,
    "speed_a_std": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_b_avg": 0.14000000000000001332267629550187848508358001708984375,
    "speed_b_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.2399999999999999911182158029987476766109466552734375,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.14000000000000001332267629550187848508358001708984375,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        }
    },
    "time_window": {
        "start": "2026-07-18T22:36:08+00:00",
        "end": "2026-07-19T01:15:11+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 50m, avg 62m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 159 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: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (PHOENIX and WOOWONHO) maintained close proximity (min 50m, avg 62m) for 159 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 18, 2026 22:01 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 3h 31m
  • Data Points: 43 AIS positions
  • Period: 2026-07-18T22:01:44+00:00 to 2026-07-19T01:33:33+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 211.80000000000001136868377216160297393798828125,
    "points_in_zone": 43,
    "first_point": {
        "ts": "2026-07-18T22:01:44+00:00",
        "lat": 35.02730669999999690844560973346233367919921875,
        "lon": 129.0711450000000013460521586239337921142578125
    },
    "last_point": {
        "ts": "2026-07-19T01:33:33+00:00",
        "lat": 35.02648169999999794299583300016820430755615234375,
        "lon": 129.072071700000009286668500863015651702880859375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 18, 2026 22:01 UTC 75.0% ▼
  • Duration: 3h 31m
  • Radius: 263 meters
  • Data Points: 43 AIS positions
  • Centroid: 35.0281, 129.0700
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 262.69999999999998863131622783839702606201171875,
    "duration_minutes": 211.80000000000001136868377216160297393798828125,
    "points": 43,
    "centroid": {
        "lat": 35.0281345302325490820294362492859363555908203125,
        "lon": 129.070010381395348986188764683902263641357421875
    },
    "bbox": {
        "min_lat": 35.02648169999999794299583300016820430755615234375,
        "min_lon": 129.068369999999987385308486409485340118408203125,
        "max_lat": 35.02862329999999957408363115973770618438720703125,
        "max_lon": 129.072071700000009286668500863015651702880859375
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 18, 2026 21:02 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 4h 31m
  • Data Points: 51 AIS positions
  • Period: 2026-07-18T21:02:05+00:00 to 2026-07-19T01:33:33+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 271.5,
    "points_in_zone": 51,
    "first_point": {
        "ts": "2026-07-18T21:02:05+00:00",
        "lat": 35.0272082999999980756911099888384342193603515625,
        "lon": 129.071441700000008268034434877336025238037109375
    },
    "last_point": {
        "ts": "2026-07-19T01:33:33+00:00",
        "lat": 35.02648169999999794299583300016820430755615234375,
        "lon": 129.072071700000009286668500863015651702880859375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 18, 2026 21:02 UTC 75.0% ▼
  • Duration: 4h 31m
  • Radius: 237 meters
  • Data Points: 51 AIS positions
  • Centroid: 35.0280, 129.0702
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 237.400000000000005684341886080801486968994140625,
    "duration_minutes": 271.5,
    "points": 51,
    "centroid": {
        "lat": 35.02799290588233560583830694667994976043701171875,
        "lon": 129.070230223529421209605061449110507965087890625
    },
    "bbox": {
        "min_lat": 35.02648169999999794299583300016820430755615234375,
        "min_lon": 129.068369999999987385308486409485340118408203125,
        "max_lat": 35.02862329999999957408363115973770618438720703125,
        "max_lon": 129.072071700000009286668500863015651702880859375
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 18, 2026 20:01 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 5h 32m
  • Data Points: 62 AIS positions
  • Period: 2026-07-18T20:01:03+00:00 to 2026-07-19T01:33:33+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 332.5,
    "points_in_zone": 62,
    "first_point": {
        "ts": "2026-07-18T20:01:03+00:00",
        "lat": 35.0273667000000017424099496565759181976318359375,
        "lon": 129.07161170000000538493623025715351104736328125
    },
    "last_point": {
        "ts": "2026-07-19T01:33:33+00:00",
        "lat": 35.02648169999999794299583300016820430755615234375,
        "lon": 129.072071700000009286668500863015651702880859375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 18, 2026 20:01 UTC 75.0% ▼
  • Duration: 5h 32m
  • Radius: 206 meters
  • Data Points: 62 AIS positions
  • Centroid: 35.0278, 129.0705
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 205.900000000000005684341886080801486968994140625,
    "duration_minutes": 332.5,
    "points": 62,
    "centroid": {
        "lat": 35.02782891935482467715701204724609851837158203125,
        "lon": 129.070520372580659795858082361519336700439453125
    },
    "bbox": {
        "min_lat": 35.02648169999999794299583300016820430755615234375,
        "min_lon": 129.068369999999987385308486409485340118408203125,
        "max_lat": 35.02862329999999957408363115973770618438720703125,
        "max_lon": 129.072071700000009286668500863015651702880859375
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Sts Strait of Gibraltar Surveillance Zone
Jul 18, 2026 19:07 UTC 90/100 ▼
Vessel A: PHOENIX (PHOENIX) RUSSIA
Vessel B: IMO 9281176 (WOOWONHO) REPUBLIC OF KOREA
  • Minimum Distance: 56 meters
  • Average Distance: 64 meters
  • Duration: 1h 42m
  • Period: 2026-07-18T19:12:09+00:00 to 2026-07-18T20:54:09+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (PHOENIX and WOOWONHO) maintained close proximity (min 56m, avg 64m) for 102 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 56m, avg 64m
Duration20/25Duration 102 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±5m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273270560,
        "imo": 9332810,
        "name": "PHOENIX",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 440400900,
        "imo": 9281176,
        "name": "WOOWONHO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 55.89999999999999857891452847979962825775146484375,
    "avg_distance_m": 64.099999999999994315658113919198513031005859375,
    "distance_consistency_m": 4.9000000000000003552713678800500929355621337890625,
    "duration_minutes": 102,
    "overlap_duration_s": 6120,
    "speed_a_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_a_std": 0.13000000000000000444089209850062616169452667236328125,
    "speed_b_avg": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_b_std": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0.1700000000000000122124532708767219446599483489990234375,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        }
    },
    "time_window": {
        "start": "2026-07-18T19:12:09+00:00",
        "end": "2026-07-18T20:54:09+00:00"
    },
    "points_count": {
        "vessel_a": 10,
        "vessel_b": 10
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 56m, avg 64m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 102 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (PHOENIX and WOOWONHO) maintained close proximity (min 56m, avg 64m) for 102 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 18, 2026 19:00 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 6h 33m
  • Data Points: 69 AIS positions
  • Period: 2026-07-18T19:00:23+00:00 to 2026-07-19T01:33:33+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 393.19999999999998863131622783839702606201171875,
    "points_in_zone": 69,
    "first_point": {
        "ts": "2026-07-18T19:00:23+00:00",
        "lat": 35.026786700000002383603714406490325927734375,
        "lon": 129.0720532999999932144419290125370025634765625
    },
    "last_point": {
        "ts": "2026-07-19T01:33:33+00:00",
        "lat": 35.02648169999999794299583300016820430755615234375,
        "lon": 129.072071700000009286668500863015651702880859375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 18, 2026 19:00 UTC 75.0% ▼
  • Duration: 6h 33m
  • Radius: 209 meters
  • Data Points: 69 AIS positions
  • Centroid: 35.0278, 129.0707
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 209.099999999999994315658113919198513031005859375,
    "duration_minutes": 393.19999999999998863131622783839702606201171875,
    "points": 69,
    "centroid": {
        "lat": 35.02775743478260750407571322284638881683349609375,
        "lon": 129.0706574115941975833266042172908782958984375
    },
    "bbox": {
        "min_lat": 35.02648169999999794299583300016820430755615234375,
        "min_lon": 129.068369999999987385308486409485340118408203125,
        "max_lat": 35.02862329999999957408363115973770618438720703125,
        "max_lon": 129.072071700000009286668500863015651702880859375
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Sts Strait of Gibraltar Surveillance Zone
Jul 18, 2026 18:45 UTC 95/100 ▼
Vessel A: PHOENIX (PHOENIX) RUSSIA
Vessel B: IMO 9281176 (WOOWONHO) REPUBLIC OF KOREA
  • Minimum Distance: 56 meters
  • Average Distance: 65 meters
  • Duration: 2h 9m
  • Period: 2026-07-18T18:45:07+00:00 to 2026-07-18T20:54:09+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (PHOENIX and WOOWONHO) maintained close proximity (min 56m, avg 65m) for 129 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 56m, avg 65m
Duration25/25Duration 129 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±5m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273270560,
        "imo": 9332810,
        "name": "PHOENIX",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 440400900,
        "imo": 9281176,
        "name": "WOOWONHO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 55.89999999999999857891452847979962825775146484375,
    "avg_distance_m": 64.7000000000000028421709430404007434844970703125,
    "distance_consistency_m": 5.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 129,
    "overlap_duration_s": 7742,
    "speed_a_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_a_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_b_avg": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_b_std": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0.1700000000000000122124532708767219446599483489990234375,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        }
    },
    "time_window": {
        "start": "2026-07-18T18:45:07+00:00",
        "end": "2026-07-18T20:54:09+00:00"
    },
    "points_count": {
        "vessel_a": 11,
        "vessel_b": 11
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 56m, avg 65m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 129 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (PHOENIX and WOOWONHO) maintained close proximity (min 56m, avg 65m) for 129 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 18, 2026 18:07 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 6h 38m
  • Data Points: 69 AIS positions
  • Period: 2026-07-18T18:51:04+00:00 to 2026-07-19T01:29:08+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 398.1000000000000227373675443232059478759765625,
    "points_in_zone": 69,
    "first_point": {
        "ts": "2026-07-18T18:51:04+00:00",
        "lat": 35.02702330000000330301190842874348163604736328125,
        "lon": 129.07211499999999659848981536924839019775390625
    },
    "last_point": {
        "ts": "2026-07-19T01:29:08+00:00",
        "lat": 35.02853999999999956571627990342676639556884765625,
        "lon": 129.07071999999999434294295497238636016845703125
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 18, 2026 18:07 UTC 75.0% ▼
  • Duration: 6h 38m
  • Radius: 209 meters
  • Data Points: 69 AIS positions
  • Centroid: 35.0278, 129.0707
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 209.099999999999994315658113919198513031005859375,
    "duration_minutes": 398.1000000000000227373675443232059478759765625,
    "points": 69,
    "centroid": {
        "lat": 35.0277652840579634130335762165486812591552734375,
        "lon": 129.070658039130449878939543850719928741455078125
    },
    "bbox": {
        "min_lat": 35.026786700000002383603714406490325927734375,
        "min_lon": 129.068369999999987385308486409485340118408203125,
        "max_lat": 35.02862329999999957408363115973770618438720703125,
        "max_lon": 129.07211499999999659848981536924839019775390625
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Sts Strait of Gibraltar Surveillance Zone
Jul 18, 2026 17:03 UTC 85/100 ▼
Vessel A: IMO 9281176 (WOOWONHO) REPUBLIC OF KOREA
Vessel B: PHOENIX (PHOENIX) RUSSIA
  • Minimum Distance: 36 meters
  • Average Distance: 61 meters
  • Duration: 1h 29m
  • Period: 2026-07-18T17:21:43+00:00 to 2026-07-18T18:51:04+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (WOOWONHO and PHOENIX) maintained close proximity (min 36m, avg 60m) for 89 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 36m, avg 60m
Duration15/25Duration 89 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±13m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440400900,
        "imo": 9281176,
        "name": "WOOWONHO",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 273270560,
        "imo": 9332810,
        "name": "PHOENIX",
        "flag": "RUSSIA"
    },
    "min_distance_m": 36.2000000000000028421709430404007434844970703125,
    "avg_distance_m": 60.5,
    "distance_consistency_m": 12.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 89.2999999999999971578290569595992565155029296875,
    "overlap_duration_s": 5361,
    "speed_a_avg": 0.179999999999999993338661852249060757458209991455078125,
    "speed_a_std": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_b_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.179999999999999993338661852249060757458209991455078125,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-18T17:21:43+00:00",
        "end": "2026-07-18T18:51:04+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 36m, avg 60m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 89 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b113m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (WOOWONHO and PHOENIX) maintained close proximity (min 36m, avg 60m) for 89 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 18, 2026 17:00 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 6h 29m
  • Data Points: 57 AIS positions
  • Period: 2026-07-18T17:51:24+00:00 to 2026-07-19T00:21:06+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 389.69999999999998863131622783839702606201171875,
    "points_in_zone": 57,
    "first_point": {
        "ts": "2026-07-18T17:51:24+00:00",
        "lat": 35.02704330000000254585756920278072357177734375,
        "lon": 129.07188500000000885847839526832103729248046875
    },
    "last_point": {
        "ts": "2026-07-19T00:21:06+00:00",
        "lat": 35.02849669999999804304025019519031047821044921875,
        "lon": 129.070046700000006012487574480473995208740234375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 18, 2026 17:00 UTC 75.0% ▼
  • Duration: 6h 29m
  • Radius: 226 meters
  • Data Points: 57 AIS positions
  • Centroid: 35.0275, 129.0708
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 225.80000000000001136868377216160297393798828125,
    "duration_minutes": 389.69999999999998863131622783839702606201171875,
    "points": 57,
    "centroid": {
        "lat": 35.02752104561403712068567983806133270263671875,
        "lon": 129.07080935438597180109354667365550994873046875
    },
    "bbox": {
        "min_lat": 35.026786700000002383603714406490325927734375,
        "min_lon": 129.068369999999987385308486409485340118408203125,
        "max_lat": 35.02849669999999804304025019519031047821044921875,
        "max_lon": 129.07211499999999659848981536924839019775390625
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 18, 2026 16:50 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 6h 39m
  • Data Points: 53 AIS positions
  • Period: 2026-07-18T16:50:14+00:00 to 2026-07-18T23:29:26+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 399.19999999999998863131622783839702606201171875,
    "points_in_zone": 53,
    "first_point": {
        "ts": "2026-07-18T16:50:14+00:00",
        "lat": 35.0266816999999974768797983415424823760986328125,
        "lon": 129.079078299999991941149346530437469482421875
    },
    "last_point": {
        "ts": "2026-07-18T23:29:26+00:00",
        "lat": 35.02782499999999998863131622783839702606201171875,
        "lon": 129.06862830000000030850060284137725830078125
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 18, 2026 16:50 UTC 75.0% ▼
  • Duration: 6h 39m
  • Radius: 695 meters
  • Data Points: 53 AIS positions
  • Centroid: 35.0272, 129.0715
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 694.8999999999999772626324556767940521240234375,
    "duration_minutes": 399.19999999999998863131622783839702606201171875,
    "points": 53,
    "centroid": {
        "lat": 35.02718748113208135919194319285452365875244140625,
        "lon": 129.0714883905660599339171312749385833740234375
    },
    "bbox": {
        "min_lat": 35.02492000000000160753188538365066051483154296875,
        "min_lon": 129.068369999999987385308486409485340118408203125,
        "max_lat": 35.02796000000000020691004465334117412567138671875,
        "max_lon": 129.079078299999991941149346530437469482421875
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 16, 2026 14:00 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 1h 31m
  • Data Points: 22 AIS positions
  • Period: 2026-07-16T14:00:29+00:00 to 2026-07-16T15:31:59+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 91.5,
    "points_in_zone": 22,
    "first_point": {
        "ts": "2026-07-16T14:00:29+00:00",
        "lat": 35.01046999999999798092176206409931182861328125,
        "lon": 129.080344999999994115569279529154300689697265625
    },
    "last_point": {
        "ts": "2026-07-16T15:31:59+00:00",
        "lat": 35.02186999999999983401721692644059658050537109375,
        "lon": 129.098693300000007866401574574410915374755859375
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 16, 2026 13:06 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 2h 25m
  • Data Points: 33 AIS positions
  • Period: 2026-07-16T13:06:19+00:00 to 2026-07-16T15:31:59+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 145.69999999999998863131622783839702606201171875,
    "points_in_zone": 33,
    "first_point": {
        "ts": "2026-07-16T13:06:19+00:00",
        "lat": 35.009531699999996590122464112937450408935546875,
        "lon": 129.080410000000000536601874046027660369873046875
    },
    "last_point": {
        "ts": "2026-07-16T15:31:59+00:00",
        "lat": 35.02186999999999983401721692644059658050537109375,
        "lon": 129.098693300000007866401574574410915374755859375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 16, 2026 13:06 UTC 75.0% ▼
  • Duration: 2h 18m
  • Radius: 97 meters
  • Data Points: 31 AIS positions
  • Centroid: 35.0104, 129.0804
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 96.5,
    "duration_minutes": 138.30000000000001136868377216160297393798828125,
    "points": 31,
    "centroid": {
        "lat": 35.01040016129032750313854194246232509613037109375,
        "lon": 129.080358806451613418175838887691497802734375
    },
    "bbox": {
        "min_lat": 35.009531699999996590122464112937450408935546875,
        "min_lon": 129.080193299999990586002240888774394989013671875,
        "max_lat": 35.0108833000000032598109100945293903350830078125,
        "max_lon": 129.080868299999991677395883016288280487060546875
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 16, 2026 12:03 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 3h 28m
  • Data Points: 47 AIS positions
  • Period: 2026-07-16T12:03:08+00:00 to 2026-07-16T15:31:59+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 208.80000000000001136868377216160297393798828125,
    "points_in_zone": 47,
    "first_point": {
        "ts": "2026-07-16T12:03:08+00:00",
        "lat": 35.0088166999999970130375004373490810394287109375,
        "lon": 129.077439999999995734469848684966564178466796875
    },
    "last_point": {
        "ts": "2026-07-16T15:31:59+00:00",
        "lat": 35.02186999999999983401721692644059658050537109375,
        "lon": 129.098693300000007866401574574410915374755859375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 16, 2026 12:03 UTC 75.0% ▼
  • Duration: 3h 21m
  • Radius: 234 meters
  • Data Points: 45 AIS positions
  • Centroid: 35.0099, 129.0796
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 234.19999999999998863131622783839702606201171875,
    "duration_minutes": 201.5,
    "points": 45,
    "centroid": {
        "lat": 35.00986229777776514993092860095202922821044921875,
        "lon": 129.079627842222180333919823169708251953125
    },
    "bbox": {
        "min_lat": 35.00845170000000194931999430991709232330322265625,
        "min_lon": 129.077439999999995734469848684966564178466796875,
        "max_lat": 35.0108833000000032598109100945293903350830078125,
        "max_lon": 129.080868299999991677395883016288280487060546875
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 16, 2026 11:00 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 4h 31m
  • Data Points: 62 AIS positions
  • Period: 2026-07-16T11:00:38+00:00 to 2026-07-16T15:31:59+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 271.3999999999999772626324556767940521240234375,
    "points_in_zone": 62,
    "first_point": {
        "ts": "2026-07-16T11:00:38+00:00",
        "lat": 35.0088817000000034340700949542224407196044921875,
        "lon": 129.076563300000003664536052383482456207275390625
    },
    "last_point": {
        "ts": "2026-07-16T15:31:59+00:00",
        "lat": 35.02186999999999983401721692644059658050537109375,
        "lon": 129.098693300000007866401574574410915374755859375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 16, 2026 11:00 UTC 75.0% ▼
  • Duration: 4h 24m
  • Radius: 237 meters
  • Data Points: 60 AIS positions
  • Centroid: 35.0096, 129.0790
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 237,
    "duration_minutes": 264,
    "points": 60,
    "centroid": {
        "lat": 35.00959808333332290430917055346071720123291015625,
        "lon": 129.078951404999997976119630038738250732421875
    },
    "bbox": {
        "min_lat": 35.00845170000000194931999430991709232330322265625,
        "min_lon": 129.076563300000003664536052383482456207275390625,
        "max_lat": 35.0108833000000032598109100945293903350830078125,
        "max_lon": 129.080868299999991677395883016288280487060546875
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 16, 2026 10:02 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 5h 29m
  • Data Points: 74 AIS positions
  • Period: 2026-07-16T10:02:45+00:00 to 2026-07-16T15:31:59+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 329.19999999999998863131622783839702606201171875,
    "points_in_zone": 74,
    "first_point": {
        "ts": "2026-07-16T10:02:45+00:00",
        "lat": 35.010116699999997535996953956782817840576171875,
        "lon": 129.075651700000008759161573834717273712158203125
    },
    "last_point": {
        "ts": "2026-07-16T15:31:59+00:00",
        "lat": 35.02186999999999983401721692644059658050537109375,
        "lon": 129.098693300000007866401574574410915374755859375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 16, 2026 10:02 UTC 75.0% ▼
  • Duration: 5h 21m
  • Radius: 265 meters
  • Data Points: 72 AIS positions
  • Centroid: 35.0096, 129.0785
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 265.3999999999999772626324556767940521240234375,
    "duration_minutes": 321.8999999999999772626324556767940521240234375,
    "points": 72,
    "centroid": {
        "lat": 35.0095694902777694323958712629973888397216796875,
        "lon": 129.07848279027774651694926433265209197998046875
    },
    "bbox": {
        "min_lat": 35.00845170000000194931999430991709232330322265625,
        "min_lon": 129.075651700000008759161573834717273712158203125,
        "max_lat": 35.0108833000000032598109100945293903350830078125,
        "max_lon": 129.080868299999991677395883016288280487060546875
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 16, 2026 09:40 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 5h 51m
  • Data Points: 81 AIS positions
  • Period: 2026-07-16T09:40:29+00:00 to 2026-07-16T15:31:59+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 351.5,
    "points_in_zone": 81,
    "first_point": {
        "ts": "2026-07-16T09:40:29+00:00",
        "lat": 35.0119382999999970706994645297527313232421875,
        "lon": 129.084374999999994315658113919198513031005859375
    },
    "last_point": {
        "ts": "2026-07-16T15:31:59+00:00",
        "lat": 35.02186999999999983401721692644059658050537109375,
        "lon": 129.098693300000007866401574574410915374755859375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 16, 2026 09:40 UTC 75.0% ▼
  • Duration: 5h 44m
  • Radius: 599 meters
  • Data Points: 79 AIS positions
  • Centroid: 35.0097, 129.0784
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 599.3999999999999772626324556767940521240234375,
    "duration_minutes": 344.19999999999998863131622783839702606201171875,
    "points": 79,
    "centroid": {
        "lat": 35.00966561139239985323001747019588947296142578125,
        "lon": 129.0784176911391796238604001700878143310546875
    },
    "bbox": {
        "min_lat": 35.00845170000000194931999430991709232330322265625,
        "min_lon": 129.0756000000000085492501966655254364013671875,
        "max_lat": 35.0119382999999970706994645297527313232421875,
        "max_lon": 129.084374999999994315658113919198513031005859375
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18

Recent Position Data

Time (UTC) Lat Lon Speed Course Zone
Jul 31 04:12 35.1885 129.2520 8.6 kn 213.8° Gulf of Cádiz Sanctions Monitoring Zone
Jul 31 04:08 35.1968 129.2593 8.4 kn 216.6° Gulf of Cádiz Sanctions Monitoring Zone
Jul 31 04:06 35.2007 129.2627 8.5 kn 214.6° Gulf of Cádiz Sanctions Monitoring Zone
Jul 31 04:02 35.2079 129.2689 8.6 kn 212.3° Gulf of Cádiz Sanctions Monitoring Zone
Jul 31 03:55 35.2227 129.2806 8.5 kn 212.0° Gulf of Cádiz Sanctions Monitoring Zone
Jul 31 03:45 35.2415 129.2949 8.6 kn 212.2° Gulf of Cádiz Sanctions Monitoring Zone
Jul 31 03:43 35.2456 129.2980 8.7 kn 210.7° Gulf of Cádiz Sanctions Monitoring Zone
Jul 31 03:41 35.2513 129.3023 9.0 kn 213.1° Gulf of Cádiz Sanctions Monitoring Zone
Jul 31 03:37 35.2591 129.3083 9.1 kn 212.6° Gulf of Cádiz Sanctions Monitoring Zone
Jul 30 12:23 35.2357 129.2935 11.6 kn 32.6° Gulf of Cádiz Sanctions Monitoring Zone
Jul 30 12:20 35.2276 129.2870 11.6 kn 33.2° Gulf of Cádiz Sanctions Monitoring Zone
Jul 30 12:18 35.2222 129.2828 11.3 kn 34.0° Gulf of Cádiz Sanctions Monitoring Zone
Jul 30 12:15 35.2125 129.2753 11.1 kn 34.1° Gulf of Cádiz Sanctions Monitoring Zone
Jul 30 12:14 35.2099 129.2732 11.0 kn 33.5° Gulf of Cádiz Sanctions Monitoring Zone
Jul 30 12:10 35.2012 129.2665 11.1 kn 33.0° Gulf of Cádiz Sanctions Monitoring Zone
Jul 30 12:07 35.1917 129.2589 11.0 kn 33.5° Gulf of Cádiz Sanctions Monitoring Zone
Jul 30 12:03 35.1829 129.2515 9.6 kn 36.9° Gulf of Cádiz Sanctions Monitoring Zone
Jul 30 12:02 35.1807 129.2496 9.5 kn 37.8° Gulf of Cádiz Sanctions Monitoring Zone
Jul 30 12:00 35.1764 129.2457 9.5 kn 37.0° Gulf of Cádiz Sanctions Monitoring Zone
Jul 28 17:41 35.0292 129.0927 10.8 kn 44.6° Strait of Gibraltar Surveillance Zone

Showing 20 of 100 recent positions.

Data Source

Vessel observed through FleetLeaks' AIS monitoring system in zones of interest. Identity and position data derived from AIS broadcasts and public maritime databases.

Disclaimer: AIS data can be spoofed or falsified. Vessel identities should be independently verified before making compliance decisions.