HAE WON

Vessel information

Vessel Name HAE WON
MMSI 440316150
Vessel Type Tanker
Flag 🏳️ REPUBLIC OF KOREA
Call Sign 250006
Length 52 m
Beam 9 m

Detected Events (32)

Sts🛰️✗ Strait of Gibraltar Surveillance Zone
Jul 28, 2026 10:15 UTC 85/100 ▼
Vessel A: IMO 9468815 (ROMANCE) PANAMA
Vessel B: MMSI 440316150 (HAE WON) REPUBLIC OF KOREA
  • Minimum Distance: 50 meters
  • Average Distance: 52 meters
  • Duration: 1h 9m
  • Period: 2026-07-28T10:15:52+00:00 to 2026-07-28T11:24:49+00:00
  • Vessel A Avg Speed: 0.0 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 (ROMANCE and HAE WON) maintained close proximity (min 50m, avg 52m) for 69 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 Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 50m, avg 52m
Duration15/25Duration 69 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
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: 2026-07-28T16:45:01.893456+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352005202,
        "imo": 9468815,
        "name": "ROMANCE",
        "flag": "PANAMA"
    },
    "vessel_b": {
        "mmsi": 440316150,
        "name": "HAE WON",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 49.7000000000000028421709430404007434844970703125,
    "avg_distance_m": 52.10000000000000142108547152020037174224853515625,
    "distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 69,
    "overlap_duration_s": 4137,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-28T10:15:52+00:00",
        "end": "2026-07-28T11:24:49+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 50m, avg 52m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 69 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: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ROMANCE and HAE WON) maintained close proximity (min 50m, avg 52m) for 69 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 Strait of Gibraltar Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 35.0102892000000025518602342344820499420166015625,
            "lon": 129.052481900000003633977030403912067413330078125
        },
        "time_window": {
            "start_ts": "2026-07-28T10:15:52+00:00",
            "end_ts": "2026-07-28T11:24:49+00:00"
        },
        "searched_at": "2026-07-28T16:45:01.893456+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 28, 2026 10:03 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 1h 40m
  • Data Points: 18 AIS positions
  • Period: 2026-07-28T10:03:25+00:00 to 2026-07-28T11:43:25+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 100,
    "points_in_zone": 18,
    "first_point": {
        "ts": "2026-07-28T10:03:25+00:00",
        "lat": 35.0106066999999967492840369231998920440673828125,
        "lon": 129.051938299999989112620824016630649566650390625
    },
    "last_point": {
        "ts": "2026-07-28T11:43:25+00:00",
        "lat": 35.02013500000000334466676576994359493255615234375,
        "lon": 129.059111699999988331910572014749050140380859375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 28, 2026 10:03 UTC 75.0% ▼
  • Duration: 1h 39m
  • Radius: 835 meters
  • Data Points: 17 AIS positions
  • Centroid: 35.0108, 129.0523
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 835.1000000000000227373675443232059478759765625,
    "duration_minutes": 99,
    "points": 17,
    "centroid": {
        "lat": 35.010825205882355248832027427852153778076171875,
        "lon": 129.0522666705882102178293280303478240966796875
    },
    "bbox": {
        "min_lat": 35.008426700000001119406078942120075225830078125,
        "min_lon": 129.049053299999997079794411547482013702392578125,
        "max_lat": 35.01762999999999692590790800750255584716796875,
        "max_lon": 129.05617829999999912615749053657054901123046875
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Sts🛰️✗ Strait of Gibraltar Surveillance Zone
Jul 28, 2026 09:29 UTC 75/100 ▼
Vessel A: MMSI 440316150 (HAE WON) REPUBLIC OF KOREA
Vessel B: IMO 9468815 (ROMANCE) PANAMA
  • Minimum Distance: 45 meters
  • Average Distance: 57 meters
  • Duration: 33 minutes
  • Period: 2026-07-28T09:29:44+00:00 to 2026-07-28T10:03:25+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (HAE WON and ROMANCE) maintained close proximity (min 45m, avg 57m) for 34 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 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 45m, avg 57m
Duration5/25Duration 34 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±14m
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: 2026-07-28T11:00:11.625026+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440316150,
        "name": "HAE WON",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 352005202,
        "imo": 9468815,
        "name": "ROMANCE",
        "flag": "PANAMA"
    },
    "min_distance_m": 44.7999999999999971578290569595992565155029296875,
    "avg_distance_m": 56.7000000000000028421709430404007434844970703125,
    "distance_consistency_m": 14.199999999999999289457264239899814128875732421875,
    "duration_minutes": 33.7000000000000028421709430404007434844970703125,
    "overlap_duration_s": 2021,
    "speed_a_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-28T09:29:44+00:00",
        "end": "2026-07-28T10:03:25+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 45m, avg 57m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 34 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: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (HAE WON and ROMANCE) maintained close proximity (min 45m, avg 57m) for 34 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 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": 35.0111495000000019217623048461973667144775390625,
            "lon": 129.051388800000012224700185470283031463623046875
        },
        "time_window": {
            "start_ts": "2026-07-28T09:29:44+00:00",
            "end_ts": "2026-07-28T10:03:25+00:00"
        },
        "searched_at": "2026-07-28T11:00:11.625026+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 28, 2026 09:00 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 2h 43m
  • Data Points: 31 AIS positions
  • Period: 2026-07-28T09:00:25+00:00 to 2026-07-28T11:43:25+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 163,
    "points_in_zone": 31,
    "first_point": {
        "ts": "2026-07-28T09:00:25+00:00",
        "lat": 35.01082670000000263144102063961327075958251953125,
        "lon": 129.05122499999998808561940677464008331298828125
    },
    "last_point": {
        "ts": "2026-07-28T11:43:25+00:00",
        "lat": 35.02013500000000334466676576994359493255615234375,
        "lon": 129.059111699999988331910572014749050140380859375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 28, 2026 09:00 UTC 75.0% ▼
  • Duration: 2h 42m
  • Radius: 848 meters
  • Data Points: 30 AIS positions
  • Centroid: 35.0109, 129.0519
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 848.1000000000000227373675443232059478759765625,
    "duration_minutes": 162,
    "points": 30,
    "centroid": {
        "lat": 35.01086211666666514474854920990765094757080078125,
        "lon": 129.051856666666679984700749628245830535888671875
    },
    "bbox": {
        "min_lat": 35.008426700000001119406078942120075225830078125,
        "min_lon": 129.049053299999997079794411547482013702392578125,
        "max_lat": 35.01762999999999692590790800750255584716796875,
        "max_lon": 129.05617829999999912615749053657054901123046875
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Sts🛰️? Strait of Gibraltar Surveillance Zone
Jul 28, 2026 08:54 UTC 95/100 ▼
Vessel A: IMO 9468815 (ROMANCE) PANAMA
Vessel B: MMSI 440316150 (HAE WON) REPUBLIC OF KOREA
  • Minimum Distance: 50 meters
  • Average Distance: 53 meters
  • Duration: 2h 29m
  • Period: 2026-07-28T08:54:55+00:00 to 2026-07-28T11:24:49+00:00
  • Vessel A Avg Speed: 0.0 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 (ROMANCE and HAE WON) maintained close proximity (min 50m, avg 53m) for 150 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 Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 50m, avg 53m
Duration25/25Duration 150 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±3m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Strait of Gibraltar Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1C_IW_GRDH_1SDV_20260727T212357_20260727T212418_008734_0114F4_B45C_COG • Acquired: 2026-07-27T21:23:57.276763Z • Platform: sentinel-1c
SAR satellite preview for event 1040519

Click image to view full size

Searched: 2026-07-28T15:30:01.422319+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352005202,
        "imo": 9468815,
        "name": "ROMANCE",
        "flag": "PANAMA"
    },
    "vessel_b": {
        "mmsi": 440316150,
        "name": "HAE WON",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 49.7000000000000028421709430404007434844970703125,
    "avg_distance_m": 52.89999999999999857891452847979962825775146484375,
    "distance_consistency_m": 2.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 149.900000000000005684341886080801486968994140625,
    "overlap_duration_s": 8994,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-28T08:54:55+00:00",
        "end": "2026-07-28T11:24:49+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "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 53m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 150 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: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ROMANCE and HAE WON) maintained close proximity (min 50m, avg 53m) for 150 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 Strait of Gibraltar Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 35.01066139999999649035089532844722270965576171875,
            "lon": 129.051979499999987410774338059127330780029296875
        },
        "time_window": {
            "start_ts": "2026-07-28T08:54:55+00:00",
            "end_ts": "2026-07-28T11:24:49+00:00"
        },
        "searched_at": "2026-07-28T15:30:01.422319+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260727T212357_20260727T212418_008734_0114F4_B45C_COG",
        "scene_datetime": "2026-07-27T21:23:57.276763Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": 127.672920000000004847606760449707508087158203125,
            "min_lat": 33.980052999999998064595274627208709716796875,
            "max_lon": 130.773605000000003428795025683939456939697265625,
            "max_lat": 35.6949350000000009686118573881685733795166015625
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/07\/event_1040519_thumbnail_20260728153006.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/07\/event_1040519_thumbnail_20260728153006.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 28, 2026 08:04 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 3h 39m
  • Data Points: 40 AIS positions
  • Period: 2026-07-28T08:04:05+00:00 to 2026-07-28T11:43:25+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 219.30000000000001136868377216160297393798828125,
    "points_in_zone": 40,
    "first_point": {
        "ts": "2026-07-28T08:04:05+00:00",
        "lat": 35.0111016999999975496393744833767414093017578125,
        "lon": 129.051185000000003810782800428569316864013671875
    },
    "last_point": {
        "ts": "2026-07-28T11:43:25+00:00",
        "lat": 35.02013500000000334466676576994359493255615234375,
        "lon": 129.059111699999988331910572014749050140380859375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 28, 2026 08:04 UTC 75.0% ▼
  • Duration: 3h 38m
  • Radius: 850 meters
  • Data Points: 39 AIS positions
  • Centroid: 35.0109, 129.0517
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 850.1000000000000227373675443232059478759765625,
    "duration_minutes": 218.30000000000001136868377216160297393798828125,
    "points": 39,
    "centroid": {
        "lat": 35.0109130384615383491109241731464862823486328125,
        "lon": 129.051696069230757757395622320473194122314453125
    },
    "bbox": {
        "min_lat": 35.008426700000001119406078942120075225830078125,
        "min_lon": 129.049053299999997079794411547482013702392578125,
        "max_lat": 35.01762999999999692590790800750255584716796875,
        "max_lon": 129.05617829999999912615749053657054901123046875
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Sts Strait of Gibraltar Surveillance Zone
Jul 28, 2026 07:07 UTC 95/100 ▼
Vessel A: IMO 9468815 (ROMANCE) PANAMA
Vessel B: MMSI 440316150 (HAE WON) REPUBLIC OF KOREA
  • Minimum Distance: 50 meters
  • Average Distance: 55 meters
  • Duration: 3h 54m
  • Period: 2026-07-28T07:30:48+00:00 to 2026-07-28T11:24:49+00:00
  • Vessel A Avg Speed: 0.0 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 (ROMANCE and HAE WON) maintained close proximity (min 50m, avg 55m) for 234 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 Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 50m, avg 55m
Duration25/25Duration 234 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±4m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352005202,
        "imo": 9468815,
        "name": "ROMANCE",
        "flag": "PANAMA"
    },
    "vessel_b": {
        "mmsi": 440316150,
        "name": "HAE WON",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 49.7000000000000028421709430404007434844970703125,
    "avg_distance_m": 54.89999999999999857891452847979962825775146484375,
    "distance_consistency_m": 3.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 234,
    "overlap_duration_s": 14041,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-28T07:30:48+00:00",
        "end": "2026-07-28T11:24:49+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 50m, avg 55m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 234 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: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ROMANCE and HAE WON) maintained close proximity (min 50m, avg 55m) for 234 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 Strait of Gibraltar Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 28, 2026 07:03 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 4h 39m
  • Data Points: 55 AIS positions
  • Period: 2026-07-28T07:03:45+00:00 to 2026-07-28T11:43:25+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 279.69999999999998863131622783839702606201171875,
    "points_in_zone": 55,
    "first_point": {
        "ts": "2026-07-28T07:03:45+00:00",
        "lat": 35.01099169999999816127456142567098140716552734375,
        "lon": 129.051631700000001501393853686749935150146484375
    },
    "last_point": {
        "ts": "2026-07-28T11:43:25+00:00",
        "lat": 35.02013500000000334466676576994359493255615234375,
        "lon": 129.059111699999988331910572014749050140380859375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 28, 2026 07:03 UTC 75.0% ▼
  • Duration: 4h 38m
  • Radius: 849 meters
  • Data Points: 54 AIS positions
  • Centroid: 35.0109, 129.0517
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 849.200000000000045474735088646411895751953125,
    "duration_minutes": 278.69999999999998863131622783839702606201171875,
    "points": 54,
    "centroid": {
        "lat": 35.01094231666666445335067692212760448455810546875,
        "lon": 129.05165105185182028435519896447658538818359375
    },
    "bbox": {
        "min_lat": 35.008426700000001119406078942120075225830078125,
        "min_lon": 129.049053299999997079794411547482013702392578125,
        "max_lat": 35.01762999999999692590790800750255584716796875,
        "max_lon": 129.05617829999999912615749053657054901123046875
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Sts Strait of Gibraltar Surveillance Zone
Jul 28, 2026 06:00 UTC 95/100 ▼
Vessel A: IMO 9468815 (ROMANCE) PANAMA
Vessel B: MMSI 440316150 (HAE WON) REPUBLIC OF KOREA
  • Minimum Distance: 50 meters
  • Average Distance: 56 meters
  • Duration: 4h 39m
  • Period: 2026-07-28T06:45:51+00:00 to 2026-07-28T11:24:49+00:00
  • Vessel A Avg Speed: 0.0 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 (ROMANCE and HAE WON) maintained close proximity (min 50m, avg 56m) for 279 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 Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 50m, avg 56m
Duration25/25Duration 279 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±4m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352005202,
        "imo": 9468815,
        "name": "ROMANCE",
        "flag": "PANAMA"
    },
    "vessel_b": {
        "mmsi": 440316150,
        "name": "HAE WON",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 49.7000000000000028421709430404007434844970703125,
    "avg_distance_m": 55.7000000000000028421709430404007434844970703125,
    "distance_consistency_m": 3.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 279,
    "overlap_duration_s": 16738,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-28T06:45:51+00:00",
        "end": "2026-07-28T11:24:49+00:00"
    },
    "points_count": {
        "vessel_a": 14,
        "vessel_b": 14
    },
    "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 56m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 279 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: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ROMANCE and HAE WON) maintained close proximity (min 50m, avg 56m) for 279 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 Strait of Gibraltar Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 28, 2026 06:00 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 5h 42m
  • Data Points: 66 AIS positions
  • Period: 2026-07-28T06:00:44+00:00 to 2026-07-28T11:43:25+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 342.69999999999998863131622783839702606201171875,
    "points_in_zone": 66,
    "first_point": {
        "ts": "2026-07-28T06:00:44+00:00",
        "lat": 35.0109733000000034053300623781979084014892578125,
        "lon": 129.051823299999995242615113966166973114013671875
    },
    "last_point": {
        "ts": "2026-07-28T11:43:25+00:00",
        "lat": 35.02013500000000334466676576994359493255615234375,
        "lon": 129.059111699999988331910572014749050140380859375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 28, 2026 06:00 UTC 75.0% ▼
  • Duration: 5h 41m
  • Radius: 848 meters
  • Data Points: 65 AIS positions
  • Centroid: 35.0109, 129.0517
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 848.200000000000045474735088646411895751953125,
    "duration_minutes": 341.69999999999998863131622783839702606201171875,
    "points": 65,
    "centroid": {
        "lat": 35.01094946307691913034432218410074710845947265625,
        "lon": 129.0516587984615171080804429948329925537109375
    },
    "bbox": {
        "min_lat": 35.008426700000001119406078942120075225830078125,
        "min_lon": 129.049053299999997079794411547482013702392578125,
        "max_lat": 35.01762999999999692590790800750255584716796875,
        "max_lon": 129.05617829999999912615749053657054901123046875
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Sts🛰️? Strait of Gibraltar Surveillance Zone
Jul 28, 2026 05:06 UTC 95/100 ▼
Vessel A: IMO 9468815 (ROMANCE) PANAMA
Vessel B: MMSI 440316150 (HAE WON) REPUBLIC OF KOREA
  • Minimum Distance: 50 meters
  • Average Distance: 55 meters
  • Duration: 6h 18m
  • Period: 2026-07-28T05:06:48+00:00 to 2026-07-28T11:24:49+00:00
  • Vessel A Avg Speed: 0.0 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 (ROMANCE and HAE WON) maintained close proximity (min 50m, avg 55m) for 378 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 Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 50m, avg 55m
Duration25/25Duration 378 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±4m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Strait of Gibraltar Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1C_IW_GRDH_1SDV_20260727T212357_20260727T212418_008734_0114F4_B45C_COG • Acquired: 2026-07-27T21:23:57.276763Z • Platform: sentinel-1c
SAR satellite preview for event 1039224

Click image to view full size

Searched: 2026-07-28T11:45:06.397297+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352005202,
        "imo": 9468815,
        "name": "ROMANCE",
        "flag": "PANAMA"
    },
    "vessel_b": {
        "mmsi": 440316150,
        "name": "HAE WON",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 49.7000000000000028421709430404007434844970703125,
    "avg_distance_m": 54.89999999999999857891452847979962825775146484375,
    "distance_consistency_m": 3.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 378,
    "overlap_duration_s": 22681,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-28T05:06:48+00:00",
        "end": "2026-07-28T11:24:49+00:00"
    },
    "points_count": {
        "vessel_a": 19,
        "vessel_b": 19
    },
    "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 55m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 378 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: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ROMANCE and HAE WON) maintained close proximity (min 50m, avg 55m) for 378 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 Strait of Gibraltar Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 35.01101200000000090994944912381470203399658203125,
            "lon": 129.051715400000006184200174175202846527099609375
        },
        "time_window": {
            "start_ts": "2026-07-28T05:06:48+00:00",
            "end_ts": "2026-07-28T11:24:49+00:00"
        },
        "searched_at": "2026-07-28T11:45:06.397297+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20260727T212357_20260727T212418_008734_0114F4_B45C_COG",
        "scene_datetime": "2026-07-27T21:23:57.276763Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": 127.672920000000004847606760449707508087158203125,
            "min_lat": 33.980052999999998064595274627208709716796875,
            "max_lon": 130.773605000000003428795025683939456939697265625,
            "max_lat": 35.6949350000000009686118573881685733795166015625
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/07\/event_1039224_thumbnail_20260728114511.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/07\/event_1039224_thumbnail_20260728114511.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 28, 2026 05:02 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 6h 29m
  • Data Points: 75 AIS positions
  • Period: 2026-07-28T05:14:25+00:00 to 2026-07-28T11:43:25+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 389,
    "points_in_zone": 75,
    "first_point": {
        "ts": "2026-07-28T05:14:25+00:00",
        "lat": 35.01096170000000284971974906511604785919189453125,
        "lon": 129.051839999999998553903424181044101715087890625
    },
    "last_point": {
        "ts": "2026-07-28T11:43:25+00:00",
        "lat": 35.02013500000000334466676576994359493255615234375,
        "lon": 129.059111699999988331910572014749050140380859375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 28, 2026 05:02 UTC 75.0% ▼
  • Duration: 6h 28m
  • Radius: 848 meters
  • Data Points: 74 AIS positions
  • Centroid: 35.0109, 129.0517
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 847.5,
    "duration_minutes": 388,
    "points": 74,
    "centroid": {
        "lat": 35.01094333513513134903405443765223026275634765625,
        "lon": 129.051687187837870851581101305782794952392578125
    },
    "bbox": {
        "min_lat": 35.008426700000001119406078942120075225830078125,
        "min_lon": 129.049053299999997079794411547482013702392578125,
        "max_lat": 35.01762999999999692590790800750255584716796875,
        "max_lon": 129.05617829999999912615749053657054901123046875
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Sts Strait of Gibraltar Surveillance Zone
Jul 28, 2026 04:25 UTC 74/100 ▼
Vessel A: MMSI 440156960 (SUNGJIN ACE) REPUBLIC OF KOREA
Vessel B: MMSI 440316150 (HAE WON) REPUBLIC OF KOREA
  • Minimum Distance: 39 meters
  • Average Distance: 52 meters
  • Duration: 52 minutes
  • Period: 2026-07-28T04:25:47+00:00 to 2026-07-28T05:17:57+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.3 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 74/100

Moderate-confidence STS candidate. Two tankers (SUNGJIN ACE and HAE WON) maintained close proximity (min 39m, avg 52m) for 52 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 39m, avg 52m
Duration10/25Duration 52 minutes
Speed Stability14/20both nearly stationary; somewhat variable 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": 440156960,
        "name": "SUNGJIN ACE",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440316150,
        "name": "HAE WON",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 39.2000000000000028421709430404007434844970703125,
    "avg_distance_m": 52.39999999999999857891452847979962825775146484375,
    "distance_consistency_m": 13.300000000000000710542735760100185871124267578125,
    "duration_minutes": 52.2000000000000028421709430404007434844970703125,
    "overlap_duration_s": 3130,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.330000000000000015543122344752191565930843353271484375,
    "speed_b_std": 0.57999999999999996003197111349436454474925994873046875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.330000000000000015543122344752191565930843353271484375,
            "max_sog": 1.5
        }
    },
    "time_window": {
        "start": "2026-07-28T04:25:47+00:00",
        "end": "2026-07-28T05:17:57+00:00"
    },
    "points_count": {
        "vessel_a": 16,
        "vessel_b": 16
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 74,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 39m, avg 52m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 52 minutes"
            },
            "speed_stability": {
                "score": 14,
                "max": 20,
                "detail": "both nearly stationary; somewhat variable 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": "Moderate-confidence STS candidate. Two tankers (SUNGJIN ACE and HAE WON) maintained close proximity (min 39m, avg 52m) for 52 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Strait of Gibraltar Surveillance Zone
Jul 28, 2026 04:24 UTC 92/100 ▼
Vessel A: IMO 9468815 (ROMANCE) PANAMA
Vessel B: MMSI 440316150 (HAE WON) REPUBLIC OF KOREA
  • Minimum Distance: 50 meters
  • Average Distance: 55 meters
  • Duration: 6h 6m
  • Period: 2026-07-28T04:24:49+00:00 to 2026-07-28T10:30:49+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 92/100

High-confidence STS candidate. Two tankers (ROMANCE and HAE WON) maintained close proximity (min 50m, avg 55m) for 366 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 50m, avg 55m
Duration25/25Duration 366 minutes
Speed Stability17/20both nearly stationary; stable speeds
Distance Consistency15/15Distance variance ±3m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352005202,
        "imo": 9468815,
        "name": "ROMANCE",
        "flag": "PANAMA"
    },
    "vessel_b": {
        "mmsi": 440316150,
        "name": "HAE WON",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 49.7000000000000028421709430404007434844970703125,
    "avg_distance_m": 54.89999999999999857891452847979962825775146484375,
    "distance_consistency_m": 3.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 366,
    "overlap_duration_s": 21960,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.2200000000000000011102230246251565404236316680908203125,
    "speed_b_std": 0.4899999999999999911182158029987476766109466552734375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.2200000000000000011102230246251565404236316680908203125,
            "max_sog": 1.5
        }
    },
    "time_window": {
        "start": "2026-07-28T04:24:49+00:00",
        "end": "2026-07-28T10:30:49+00:00"
    },
    "points_count": {
        "vessel_a": 25,
        "vessel_b": 25
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 92,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 50m, avg 55m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 366 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; 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: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ROMANCE and HAE WON) maintained close proximity (min 50m, avg 55m) for 366 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 28, 2026 04:21 UTC 75.0% ▼
  • Duration: 6h 34m
  • Radius: 112 meters
  • Data Points: 76 AIS positions
  • Centroid: 35.0108, 129.0517
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 111.5,
    "duration_minutes": 394.30000000000001136868377216160297393798828125,
    "points": 76,
    "centroid": {
        "lat": 35.01083574605263493140228092670440673828125,
        "lon": 129.0516610368421197563293389976024627685546875
    },
    "bbox": {
        "min_lat": 35.01001500000000277168510365299880504608154296875,
        "min_lon": 129.051066700000006903792382217943668365478515625,
        "max_lat": 35.01115329999999659094100934453308582305908203125,
        "max_lon": 129.052410000000008949427865445613861083984375
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 28, 2026 04:13 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 6h 34m
  • Data Points: 76 AIS positions
  • Period: 2026-07-28T04:50:06+00:00 to 2026-07-28T11:24:24+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 394.30000000000001136868377216160297393798828125,
    "points_in_zone": 76,
    "first_point": {
        "ts": "2026-07-28T04:50:06+00:00",
        "lat": 35.01089830000000091558831627480685710906982421875,
        "lon": 129.051831700000008140705176629126071929931640625
    },
    "last_point": {
        "ts": "2026-07-28T11:24:24+00:00",
        "lat": 35.01011170000000305435605696402490139007568359375,
        "lon": 129.052410000000008949427865445613861083984375
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 27, 2026 04:25 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 1h 25m
  • Data Points: 24 AIS positions
  • Period: 2026-07-27T04:25:25+00:00 to 2026-07-27T05:50:25+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 85,
    "points_in_zone": 24,
    "first_point": {
        "ts": "2026-07-27T04:25:25+00:00",
        "lat": 34.7952532999999988305717124603688716888427734375,
        "lon": 128.838898300000010976873454637825489044189453125
    },
    "last_point": {
        "ts": "2026-07-27T05:50:25+00:00",
        "lat": 35.0291332999999980302163749001920223236083984375,
        "lon": 129.088941699999992351877153851091861724853515625
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 18, 2026 05:01 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 1h 2m
  • Data Points: 15 AIS positions
  • Period: 2026-07-18T05:01:24+00:00 to 2026-07-18T06:04:13+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 62.7999999999999971578290569595992565155029296875,
    "points_in_zone": 15,
    "first_point": {
        "ts": "2026-07-18T05:01:24+00:00",
        "lat": 35.02748669999999719948391430079936981201171875,
        "lon": 129.074938300000013668977771885693073272705078125
    },
    "last_point": {
        "ts": "2026-07-18T06:04:13+00:00",
        "lat": 35.027271700000000009822542779147624969482421875,
        "lon": 129.07575669999999945503077469766139984130859375
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 18, 2026 04:01 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 2h 3m
  • Data Points: 29 AIS positions
  • Period: 2026-07-18T04:01:13+00:00 to 2026-07-18T06:04:13+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 123,
    "points_in_zone": 29,
    "first_point": {
        "ts": "2026-07-18T04:01:13+00:00",
        "lat": 35.02734670000000249956428888253867626190185546875,
        "lon": 129.07495330000000421932782046496868133544921875
    },
    "last_point": {
        "ts": "2026-07-18T06:04:13+00:00",
        "lat": 35.027271700000000009822542779147624969482421875,
        "lon": 129.07575669999999945503077469766139984130859375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 18, 2026 04:01 UTC 75.0% ▼
  • Duration: 2h 3m
  • Radius: 79 meters
  • Data Points: 29 AIS positions
  • Centroid: 35.0275, 129.0749
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 79,
    "duration_minutes": 123,
    "points": 29,
    "centroid": {
        "lat": 35.0274822482758594333063228987157344818115234375,
        "lon": 129.0749297758620741660706698894500732421875
    },
    "bbox": {
        "min_lat": 35.027209999999996625774656422436237335205078125,
        "min_lon": 129.074469999999990932337823323905467987060546875,
        "max_lat": 35.02789169999999785432009957730770111083984375,
        "max_lon": 129.07575669999999945503077469766139984130859375
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 18, 2026 03:01 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 3h 2m
  • Data Points: 44 AIS positions
  • Period: 2026-07-18T03:01:42+00:00 to 2026-07-18T06:04:13+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 182.5,
    "points_in_zone": 44,
    "first_point": {
        "ts": "2026-07-18T03:01:42+00:00",
        "lat": 35.028154999999998153725755400955677032470703125,
        "lon": 129.0743416999999908512108959257602691650390625
    },
    "last_point": {
        "ts": "2026-07-18T06:04:13+00:00",
        "lat": 35.027271700000000009822542779147624969482421875,
        "lon": 129.07575669999999945503077469766139984130859375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 18, 2026 03:01 UTC 75.0% ▼
  • Duration: 3h 2m
  • Radius: 136 meters
  • Data Points: 44 AIS positions
  • Centroid: 35.0276, 129.0748
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 135.599999999999994315658113919198513031005859375,
    "duration_minutes": 182.5,
    "points": 44,
    "centroid": {
        "lat": 35.0275939068181827451553544960916042327880859375,
        "lon": 129.074837736363633666769601404666900634765625
    },
    "bbox": {
        "min_lat": 35.027209999999996625774656422436237335205078125,
        "min_lon": 129.073863299999999298961483873426914215087890625,
        "max_lat": 35.0285166999999972858859109692275524139404296875,
        "max_lon": 129.07575669999999945503077469766139984130859375
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 18, 2026 02:07 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 3h 56m
  • Data Points: 56 AIS positions
  • Period: 2026-07-18T02:07:44+00:00 to 2026-07-18T06:04:13+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 236.5,
    "points_in_zone": 56,
    "first_point": {
        "ts": "2026-07-18T02:07:44+00:00",
        "lat": 35.02828170000000085337887867353856563568115234375,
        "lon": 129.074158299999993460005498491227626800537109375
    },
    "last_point": {
        "ts": "2026-07-18T06:04:13+00:00",
        "lat": 35.027271700000000009822542779147624969482421875,
        "lon": 129.07575669999999945503077469766139984130859375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 18, 2026 02:07 UTC 75.0% ▼
  • Duration: 3h 56m
  • Radius: 122 meters
  • Data Points: 56 AIS positions
  • Centroid: 35.0277, 129.0747
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 121.7999999999999971578290569595992565155029296875,
    "duration_minutes": 236.5,
    "points": 56,
    "centroid": {
        "lat": 35.02769223749999838446456124074757099151611328125,
        "lon": 129.07474465178569289491861127316951751708984375
    },
    "bbox": {
        "min_lat": 35.027209999999996625774656422436237335205078125,
        "min_lon": 129.073863299999999298961483873426914215087890625,
        "max_lat": 35.0285166999999972858859109692275524139404296875,
        "max_lon": 129.07575669999999945503077469766139984130859375
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 18, 2026 01:25 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 4h 38m
  • Data Points: 63 AIS positions
  • Period: 2026-07-18T01:25:43+00:00 to 2026-07-18T06:04:13+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 278.5,
    "points_in_zone": 63,
    "first_point": {
        "ts": "2026-07-18T01:25:43+00:00",
        "lat": 35.02944500000000260797605733387172222137451171875,
        "lon": 129.081555000000008703864295966923236846923828125
    },
    "last_point": {
        "ts": "2026-07-18T06:04:13+00:00",
        "lat": 35.027271700000000009822542779147624969482421875,
        "lon": 129.07575669999999945503077469766139984130859375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 18, 2026 01:25 UTC 75.0% ▼
  • Duration: 4h 38m
  • Radius: 637 meters
  • Data Points: 63 AIS positions
  • Centroid: 35.0277, 129.0749
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 636.6000000000000227373675443232059478759765625,
    "duration_minutes": 278.5,
    "points": 63,
    "centroid": {
        "lat": 35.0276985761904740002137259580194950103759765625,
        "lon": 129.074909638095249420075560919940471649169921875
    },
    "bbox": {
        "min_lat": 35.02505670000000037589416024275124073028564453125,
        "min_lon": 129.073856699999993224992067553102970123291015625,
        "max_lat": 35.02944500000000260797605733387172222137451171875,
        "max_lon": 129.081555000000008703864295966923236846923828125
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18

Recent Position Data

Time (UTC) Lat Lon Speed Course Zone
Jul 31 00:56 35.1863 129.2505 10.2 kn 221.4° Gulf of Cádiz Sanctions Monitoring Zone
Jul 31 00:54 35.1913 129.2560 10.2 kn 222.7° Gulf of Cádiz Sanctions Monitoring Zone
Jul 31 00:53 35.1942 129.2590 10.2 kn 221.3° Gulf of Cádiz Sanctions Monitoring Zone
Jul 31 00:50 35.2002 129.2647 10.2 kn 219.6° Gulf of Cádiz Sanctions Monitoring Zone
Jul 31 00:48 35.2039 129.2682 10.1 kn 217.5° Gulf of Cádiz Sanctions Monitoring Zone
Jul 28 11:43 35.0201 129.0591 12.5 kn 42.1° Strait of Gibraltar Surveillance Zone
Jul 28 11:42 35.0176 129.0562 12.5 kn 45.1° Strait of Gibraltar Surveillance Zone
Jul 28 11:41 35.0151 129.0533 12.3 kn 42.9° Strait of Gibraltar Surveillance Zone
Jul 28 11:39 35.0106 129.0491 7.1 kn 8.1° Strait of Gibraltar Surveillance Zone
Jul 28 11:37 35.0084 129.0505 3.8 kn 261.3° Strait of Gibraltar Surveillance Zone
Jul 28 11:24 35.0101 129.0524 0.1 kn 85.3° Strait of Gibraltar Surveillance Zone
Jul 28 11:20 35.0101 129.0523 0.1 kn 216.7° Strait of Gibraltar Surveillance Zone
Jul 28 11:16 35.0101 129.0524 0.1 kn 92.4° Strait of Gibraltar Surveillance Zone
Jul 28 11:03 35.0101 129.0524 0.3 kn 349.6° Strait of Gibraltar Surveillance Zone
Jul 28 11:00 35.0100 129.0523 0.1 kn 298.2° Strait of Gibraltar Surveillance Zone
Jul 28 10:56 35.0100 129.0524 0.3 kn 196.4° Strait of Gibraltar Surveillance Zone
Jul 28 10:33 35.0101 129.0523 0.1 kn 283.5° Strait of Gibraltar Surveillance Zone
Jul 28 10:28 35.0101 129.0523 0.0 kn 29.1° Strait of Gibraltar Surveillance Zone
Jul 28 10:18 35.0101 129.0522 0.0 kn 223.8° Strait of Gibraltar Surveillance Zone
Jul 28 10:15 35.0101 129.0522 0.1 kn 220.6° Strait of Gibraltar Surveillance Zone

Showing 20 of 94 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.