DAE IL

Vessel information

Vessel Name DAE IL
MMSI 440035420
Vessel Type Tanker
Flag 🏳️ REPUBLIC OF KOREA
Call Sign SSD
Length 40 m
Beam 10 m

Detected Events (26)

Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 28, 2026 02:24 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 1h 16m
  • Data Points: 18 AIS positions
  • Period: 2026-07-28T02:24:08+00:00 to 2026-07-28T03:41:04+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 76.900000000000005684341886080801486968994140625,
    "points_in_zone": 18,
    "first_point": {
        "ts": "2026-07-28T02:24:08+00:00",
        "lat": 35.0291050000000012687451089732348918914794921875,
        "lon": 129.10376669999999421634129248559474945068359375
    },
    "last_point": {
        "ts": "2026-07-28T03:41:04+00:00",
        "lat": 34.93846330000000222071321331895887851715087890625,
        "lon": 129.000145000000003392415237613022327423095703125
    }
}
Methodology: 2026.01.18
Sts Strait of Gibraltar Surveillance Zone
Jul 25, 2026 12:04 UTC 80/100 ▼
Vessel A: SEAHORSE (SEAHORSE) CAMEROON
Vessel B: MMSI 440035420 (DAE IL) REPUBLIC OF KOREA
  • Minimum Distance: 48 meters
  • Average Distance: 53 meters
  • Duration: 54 minutes
  • Period: 2026-07-25T12:32:39+00:00 to 2026-07-25T13:26:38+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.3 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (SEAHORSE and DAE IL) maintained close proximity (min 48m, avg 53m) for 54 minutes. Both vessels were slow-moving (avg speeds 0.1 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 48m, avg 53m
Duration10/25Duration 54 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": 613541600,
        "imo": 9266750,
        "name": "SEAHORSE",
        "flag": "CAMEROON"
    },
    "vessel_b": {
        "mmsi": 440035420,
        "name": "DAE IL",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 47.7999999999999971578290569595992565155029296875,
    "avg_distance_m": 53.39999999999999857891452847979962825775146484375,
    "distance_consistency_m": 4.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 54,
    "overlap_duration_s": 3239,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_avg": 0.299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.2300000000000000099920072216264088638126850128173828125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-07-25T12:32:39+00:00",
        "end": "2026-07-25T13:26:38+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 48m, avg 53m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 54 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 (SEAHORSE and DAE IL) maintained close proximity (min 48m, avg 53m) for 54 minutes. Both vessels were slow-moving (avg speeds 0.1 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
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 25, 2026 12:00 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 1h 34m
  • Data Points: 27 AIS positions
  • Period: 2026-07-25T12:00:56+00:00 to 2026-07-25T13:34:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 94,
    "points_in_zone": 27,
    "first_point": {
        "ts": "2026-07-25T12:00:56+00:00",
        "lat": 35.0088616999999970857970765791833400726318359375,
        "lon": 129.0542550000000119325704872608184814453125
    },
    "last_point": {
        "ts": "2026-07-25T13:34:56+00:00",
        "lat": 35.0289250000000009777068044058978557586669921875,
        "lon": 129.0683017000000063490006141364574432373046875
    }
}
Methodology: 2026.01.18
Sts Strait of Gibraltar Surveillance Zone
Jul 25, 2026 11:19 UTC 90/100 ▼
Vessel A: SEAHORSE (SEAHORSE) CAMEROON
Vessel B: MMSI 440035420 (DAE IL) REPUBLIC OF KOREA
  • Minimum Distance: 48 meters
  • Average Distance: 53 meters
  • Duration: 1h 48m
  • Period: 2026-07-25T11:38:33+00:00 to 2026-07-25T13:26:38+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: 90/100

High-confidence STS candidate. Two tankers (SEAHORSE and DAE IL) maintained close proximity (min 48m, avg 53m) for 108 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 48m, avg 53m
Duration20/25Duration 108 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
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 613541600,
        "imo": 9266750,
        "name": "SEAHORSE",
        "flag": "CAMEROON"
    },
    "vessel_b": {
        "mmsi": 440035420,
        "name": "DAE IL",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 47.7999999999999971578290569595992565155029296875,
    "avg_distance_m": 53.39999999999999857891452847979962825775146484375,
    "distance_consistency_m": 3.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 108.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 6485,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.14000000000000001332267629550187848508358001708984375,
    "speed_b_std": 0.2099999999999999922284388276239042170345783233642578125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.14000000000000001332267629550187848508358001708984375,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-07-25T11:38:33+00:00",
        "end": "2026-07-25T13:26:38+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 48m, avg 53m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 108 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 (SEAHORSE and DAE IL) maintained close proximity (min 48m, avg 53m) for 108 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 25, 2026 11:03 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 2h 31m
  • Data Points: 40 AIS positions
  • Period: 2026-07-25T11:03:35+00:00 to 2026-07-25T13:34:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 151.30000000000001136868377216160297393798828125,
    "points_in_zone": 40,
    "first_point": {
        "ts": "2026-07-25T11:03:35+00:00",
        "lat": 35.00906830000000269365045824088156223297119140625,
        "lon": 129.054065000000008467395673505961894989013671875
    },
    "last_point": {
        "ts": "2026-07-25T13:34:56+00:00",
        "lat": 35.0289250000000009777068044058978557586669921875,
        "lon": 129.0683017000000063490006141364574432373046875
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 25, 2026 11:03 UTC 75.0% ▼
  • Duration: 2h 25m
  • Radius: 1,107 meters
  • Data Points: 37 AIS positions
  • Centroid: 35.0089, 129.0546
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 1106.59999999999990905052982270717620849609375,
    "duration_minutes": 145.69999999999998863131622783839702606201171875,
    "points": 37,
    "centroid": {
        "lat": 35.00892185405404433140574838034808635711669921875,
        "lon": 129.05464036486483792032231576740741729736328125
    },
    "bbox": {
        "min_lat": 35.00777329999999665233190171420574188232421875,
        "min_lon": 129.053975000000008321876521222293376922607421875,
        "max_lat": 35.01721169999999716537786298431456089019775390625,
        "max_lon": 129.061383299999988594208844006061553955078125
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Sts Strait of Gibraltar Surveillance Zone
Jul 25, 2026 10:48 UTC 95/100 ▼
Vessel A: SEAHORSE (SEAHORSE) CAMEROON
Vessel B: MMSI 440035420 (DAE IL) REPUBLIC OF KOREA
  • Minimum Distance: 48 meters
  • Average Distance: 53 meters
  • Duration: 2h 30m
  • Period: 2026-07-25T10:56:33+00:00 to 2026-07-25T13:26:38+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 (SEAHORSE and DAE IL) maintained close proximity (min 48m, 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 48m, 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
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 613541600,
        "imo": 9266750,
        "name": "SEAHORSE",
        "flag": "CAMEROON"
    },
    "vessel_b": {
        "mmsi": 440035420,
        "name": "DAE IL",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 47.7999999999999971578290569595992565155029296875,
    "avg_distance_m": 53.39999999999999857891452847979962825775146484375,
    "distance_consistency_m": 2.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 150.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 9005,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.11999999999999999555910790149937383830547332763671875,
    "speed_b_std": 0.179999999999999993338661852249060757458209991455078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.11999999999999999555910790149937383830547332763671875,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-07-25T10:56:33+00:00",
        "end": "2026-07-25T13:26:38+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 48m, 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 (SEAHORSE and DAE IL) maintained close proximity (min 48m, 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."
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 25, 2026 10:04 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 3h 30m
  • Data Points: 54 AIS positions
  • Period: 2026-07-25T10:04:14+00:00 to 2026-07-25T13:34:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 210.69999999999998863131622783839702606201171875,
    "points_in_zone": 54,
    "first_point": {
        "ts": "2026-07-25T10:04:14+00:00",
        "lat": 35.00925670000000167192411026917397975921630859375,
        "lon": 129.053853299999985893009579740464687347412109375
    },
    "last_point": {
        "ts": "2026-07-25T13:34:56+00:00",
        "lat": 35.0289250000000009777068044058978557586669921875,
        "lon": 129.0683017000000063490006141364574432373046875
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 25, 2026 10:04 UTC 75.0% ▼
  • Duration: 3h 25m
  • Radius: 1,110 meters
  • Data Points: 51 AIS positions
  • Centroid: 35.0090, 129.0544
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 1109.59999999999990905052982270717620849609375,
    "duration_minutes": 205.099999999999994315658113919198513031005859375,
    "points": 51,
    "centroid": {
        "lat": 35.0089979784313669597395346499979496002197265625,
        "lon": 129.054445721568612270857556723058223724365234375
    },
    "bbox": {
        "min_lat": 35.00777329999999665233190171420574188232421875,
        "min_lon": 129.053821699999986094553605653345584869384765625,
        "max_lat": 35.01721169999999716537786298431456089019775390625,
        "max_lon": 129.061383299999988594208844006061553955078125
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Sts🛰️✗ Strait of Gibraltar Surveillance Zone
Jul 25, 2026 09:05 UTC 85/100 ▼
Vessel A: MMSI 440035420 (DAE IL) REPUBLIC OF KOREA
Vessel B: SEAHORSE (SEAHORSE) CAMEROON
  • Minimum Distance: 51 meters
  • Average Distance: 57 meters
  • Duration: 1h 2m
  • Period: 2026-07-25T09:05:55+00:00 to 2026-07-25T10:08:24+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: 85/100

High-confidence STS candidate. Two tankers (DAE IL and SEAHORSE) maintained close proximity (min 51m, avg 57m) for 62 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 51m, avg 57m
Duration15/25Duration 62 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 Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-25T15:30:01.615292+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440035420,
        "name": "DAE IL",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 613541600,
        "imo": 9266750,
        "name": "SEAHORSE",
        "flag": "CAMEROON"
    },
    "min_distance_m": 50.7999999999999971578290569595992565155029296875,
    "avg_distance_m": 57.2000000000000028421709430404007434844970703125,
    "distance_consistency_m": 4.0999999999999996447286321199499070644378662109375,
    "duration_minutes": 62.5,
    "overlap_duration_s": 3749,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-07-25T09:05:55+00:00",
        "end": "2026-07-25T10:08:24+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 51m, avg 57m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 62 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 (DAE IL and SEAHORSE) maintained close proximity (min 51m, avg 57m) for 62 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": 35.0093681999999972731529851444065570831298828125,
            "lon": 129.054067800000012766759027726948261260986328125
        },
        "time_window": {
            "start_ts": "2026-07-25T09:05:55+00:00",
            "end_ts": "2026-07-25T10:08:24+00:00"
        },
        "searched_at": "2026-07-25T15:30:01.615292+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 25, 2026 09:00 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 4h 34m
  • Data Points: 68 AIS positions
  • Period: 2026-07-25T09:00:45+00:00 to 2026-07-25T13:34:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 274.19999999999998863131622783839702606201171875,
    "points_in_zone": 68,
    "first_point": {
        "ts": "2026-07-25T09:00:45+00:00",
        "lat": 35.0093083000000007132257451303303241729736328125,
        "lon": 129.05387500000000500222085975110530853271484375
    },
    "last_point": {
        "ts": "2026-07-25T13:34:56+00:00",
        "lat": 35.0289250000000009777068044058978557586669921875,
        "lon": 129.0683017000000063490006141364574432373046875
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 25, 2026 09:00 UTC 75.0% ▼
  • Duration: 4h 28m
  • Radius: 1,111 meters
  • Data Points: 65 AIS positions
  • Centroid: 35.0091, 129.0543
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 1110.5,
    "duration_minutes": 268.6000000000000227373675443232059478759765625,
    "points": 65,
    "centroid": {
        "lat": 35.009074696923079272892209701240062713623046875,
        "lon": 129.054296924615385933066136203706264495849609375
    },
    "bbox": {
        "min_lat": 35.00777329999999665233190171420574188232421875,
        "min_lon": 129.0536832999999887761077843606472015380859375,
        "max_lat": 35.01721169999999716537786298431456089019775390625,
        "max_lon": 129.061383299999988594208844006061553955078125
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 25, 2026 08:13 UTC 75.0% ▼
  • Duration: 5h 16m
  • Radius: 1,091 meters
  • Data Points: 78 AIS positions
  • Centroid: 35.0094, 129.0541
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 1090.799999999999954525264911353588104248046875,
    "duration_minutes": 316,
    "points": 78,
    "centroid": {
        "lat": 35.0094002179487091552800848148763179779052734375,
        "lon": 129.054125279487180932846968062222003936767578125
    },
    "bbox": {
        "min_lat": 35.00777329999999665233190171420574188232421875,
        "min_lon": 129.05106169999999110586941242218017578125,
        "max_lat": 35.01721169999999716537786298431456089019775390625,
        "max_lon": 129.061383299999988594208844006061553955078125
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Sts Strait of Gibraltar Surveillance Zone
Jul 25, 2026 08:09 UTC 79/100 ▼
Vessel A: SEAHORSE (SEAHORSE) CAMEROON
Vessel B: MMSI 440035420 (DAE IL) REPUBLIC OF KOREA
  • Minimum Distance: 47 meters
  • Average Distance: 130 meters
  • Duration: 5h 16m
  • Period: 2026-07-25T08:09:49+00:00 to 2026-07-25T13:26:38+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.5 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 79/100

Moderate-confidence STS candidate. Two tankers (SEAHORSE and DAE IL) maintained close proximity (min 47m, avg 130m) for 317 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.5 knots). Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 47m, avg 130m
Duration25/25Duration 317 minutes
Speed Stability14/20both nearly stationary; somewhat variable speeds
Distance Consistency5/15Distance variance ±147m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 613541600,
        "imo": 9266750,
        "name": "SEAHORSE",
        "flag": "CAMEROON"
    },
    "vessel_b": {
        "mmsi": 440035420,
        "name": "DAE IL",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 47.2000000000000028421709430404007434844970703125,
    "avg_distance_m": 130,
    "distance_consistency_m": 147.30000000000001136868377216160297393798828125,
    "duration_minutes": 316.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 19009,
    "speed_a_avg": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_a_std": 0.2399999999999999911182158029987476766109466552734375,
    "speed_b_avg": 0.5,
    "speed_b_std": 0.67000000000000003996802888650563545525074005126953125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1600000000000000033306690738754696212708950042724609375,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0.5,
            "max_sog": 1.899999999999999911182158029987476766109466552734375
        }
    },
    "time_window": {
        "start": "2026-07-25T08:09:49+00:00",
        "end": "2026-07-25T13:26:38+00:00"
    },
    "points_count": {
        "vessel_a": 25,
        "vessel_b": 25
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 79,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 47m, avg 130m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 317 minutes"
            },
            "speed_stability": {
                "score": 14,
                "max": 20,
                "detail": "both nearly stationary; somewhat variable speeds"
            },
            "distance_consistency": {
                "score": 5,
                "max": 15,
                "detail": "Distance variance \u00b1147m"
            },
            "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 (SEAHORSE and DAE IL) maintained close proximity (min 47m, avg 130m) for 317 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.5 knots). 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 25, 2026 08:01 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 5h 33m
  • Data Points: 85 AIS positions
  • Period: 2026-07-25T08:01:39+00:00 to 2026-07-25T13:34:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 333.30000000000001136868377216160297393798828125,
    "points_in_zone": 85,
    "first_point": {
        "ts": "2026-07-25T08:01:39+00:00",
        "lat": 35.02522499999999894271240918897092342376708984375,
        "lon": 129.076493300000009867289918474853038787841796875
    },
    "last_point": {
        "ts": "2026-07-25T13:34:56+00:00",
        "lat": 35.0289250000000009777068044058978557586669921875,
        "lon": 129.0683017000000063490006141364574432373046875
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 25, 2026 07:57 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 5h 37m
  • Data Points: 87 AIS positions
  • Period: 2026-07-25T07:57:46+00:00 to 2026-07-25T13:34:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 337.19999999999998863131622783839702606201171875,
    "points_in_zone": 87,
    "first_point": {
        "ts": "2026-07-25T07:57:46+00:00",
        "lat": 35.0272482999999965613824315369129180908203125,
        "lon": 129.07701170000001411608536727726459503173828125
    },
    "last_point": {
        "ts": "2026-07-25T13:34:56+00:00",
        "lat": 35.0289250000000009777068044058978557586669921875,
        "lon": 129.0683017000000063490006141364574432373046875
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 23, 2026 14:01 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 2h 36m
  • Data Points: 21 AIS positions
  • Period: 2026-07-23T14:01:25+00:00 to 2026-07-23T16:37:25+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 156,
    "points_in_zone": 21,
    "first_point": {
        "ts": "2026-07-23T14:01:25+00:00",
        "lat": 35.01076669999999779747668071649968624114990234375,
        "lon": 129.052993299999997134364093653857707977294921875
    },
    "last_point": {
        "ts": "2026-07-23T16:37:25+00:00",
        "lat": 35.008641699999998309067450463771820068359375,
        "lon": 128.99723499999998921339283697307109832763671875
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 23, 2026 13:02 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 3h 35m
  • Data Points: 34 AIS positions
  • Period: 2026-07-23T13:02:04+00:00 to 2026-07-23T16:37:25+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 215.30000000000001136868377216160297393798828125,
    "points_in_zone": 34,
    "first_point": {
        "ts": "2026-07-23T13:02:04+00:00",
        "lat": 35.0108182999999968387783155776560306549072265625,
        "lon": 129.0530082999999876847141422331333160400390625
    },
    "last_point": {
        "ts": "2026-07-23T16:37:25+00:00",
        "lat": 35.008641699999998309067450463771820068359375,
        "lon": 128.99723499999998921339283697307109832763671875
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 23, 2026 13:02 UTC 75.0% ▼
  • Duration: 1h 36m
  • Radius: 784 meters
  • Data Points: 22 AIS positions
  • Centroid: 35.0112, 129.0532
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 783.799999999999954525264911353588104248046875,
    "duration_minutes": 96.7000000000000028421709430404007434844970703125,
    "points": 22,
    "centroid": {
        "lat": 35.01120561818181187163645518012344837188720703125,
        "lon": 129.0532438590909123377059586346149444580078125
    },
    "bbox": {
        "min_lat": 35.01064000000000220325091504491865634918212890625,
        "min_lon": 129.0529017000000067127984948456287384033203125,
        "max_lat": 35.01784169999999818401192896999418735504150390625,
        "max_lon": 129.05619169999999940046109259128570556640625
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 23, 2026 12:00 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 4h 36m
  • Data Points: 47 AIS positions
  • Period: 2026-07-23T12:00:44+00:00 to 2026-07-23T16:37:25+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 276.69999999999998863131622783839702606201171875,
    "points_in_zone": 47,
    "first_point": {
        "ts": "2026-07-23T12:00:44+00:00",
        "lat": 35.01039829999999852816472412087023258209228515625,
        "lon": 129.053198299999991149888955987989902496337890625
    },
    "last_point": {
        "ts": "2026-07-23T16:37:25+00:00",
        "lat": 35.008641699999998309067450463771820068359375,
        "lon": 128.99723499999998921339283697307109832763671875
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 23, 2026 12:00 UTC 75.0% ▼
  • Duration: 2h 38m
  • Radius: 810 meters
  • Data Points: 35 AIS positions
  • Centroid: 35.0110, 129.0532
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 810,
    "duration_minutes": 158,
    "points": 35,
    "centroid": {
        "lat": 35.01096862285714195195396314375102519989013671875,
        "lon": 129.05319657142854339326731860637664794921875
    },
    "bbox": {
        "min_lat": 35.0103050000000024510882212780416011810302734375,
        "min_lon": 129.0529017000000067127984948456287384033203125,
        "max_lat": 35.01784169999999818401192896999418735504150390625,
        "max_lon": 129.05619169999999940046109259128570556640625
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 23, 2026 11:02 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 5h 35m
  • Data Points: 62 AIS positions
  • Period: 2026-07-23T11:02:03+00:00 to 2026-07-23T16:37:25+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 335.3999999999999772626324556767940521240234375,
    "points_in_zone": 62,
    "first_point": {
        "ts": "2026-07-23T11:02:03+00:00",
        "lat": 35.01076830000000228437784244306385517120361328125,
        "lon": 129.0548367000000098414602689445018768310546875
    },
    "last_point": {
        "ts": "2026-07-23T16:37:25+00:00",
        "lat": 35.008641699999998309067450463771820068359375,
        "lon": 128.99723499999998921339283697307109832763671875
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 23, 2026 11:02 UTC 75.0% ▼
  • Duration: 3h 36m
  • Radius: 822 meters
  • Data Points: 50 AIS positions
  • Centroid: 35.0109, 129.0532
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 821.700000000000045474735088646411895751953125,
    "duration_minutes": 216.69999999999998863131622783839702606201171875,
    "points": 50,
    "centroid": {
        "lat": 35.01085143599999582875170744955539703369140625,
        "lon": 129.053216735999967568204738199710845947265625
    },
    "bbox": {
        "min_lat": 35.0103050000000024510882212780416011810302734375,
        "min_lon": 129.0529017000000067127984948456287384033203125,
        "max_lat": 35.01784169999999818401192896999418735504150390625,
        "max_lon": 129.05619169999999940046109259128570556640625
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 23, 2026 10:32 UTC 75.0% ▼
  • Duration: 4h 6m
  • Radius: 1,068 meters
  • Data Points: 61 AIS positions
  • Centroid: 35.0108, 129.0536
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 1068.40000000000009094947017729282379150390625,
    "duration_minutes": 246.30000000000001136868377216160297393798828125,
    "points": 61,
    "centroid": {
        "lat": 35.01084991967213255747992661781609058380126953125,
        "lon": 129.0536113409835934362490661442279815673828125
    },
    "bbox": {
        "min_lat": 35.00712829999999797792042954824864864349365234375,
        "min_lon": 129.050713300000012395685189403593540191650390625,
        "max_lat": 35.01829330000000339850885211490094661712646484375,
        "max_lon": 129.06103830000000698419171385467052459716796875
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 23, 2026 10:23 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 6h 13m
  • Data Points: 76 AIS positions
  • Period: 2026-07-23T10:23:49+00:00 to 2026-07-23T16:37:25+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 373.6000000000000227373675443232059478759765625,
    "points_in_zone": 76,
    "first_point": {
        "ts": "2026-07-23T10:23:49+00:00",
        "lat": 35.02971000000000145746525959111750125885009765625,
        "lon": 129.07449669999999741776264272630214691162109375
    },
    "last_point": {
        "ts": "2026-07-23T16:37:25+00:00",
        "lat": 35.008641699999998309067450463771820068359375,
        "lon": 128.99723499999998921339283697307109832763671875
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 17, 2026 05:20 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 1h 15m
  • Data Points: 15 AIS positions
  • Period: 2026-07-17T05:20:41+00:00 to 2026-07-17T06:35:43+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 75,
    "points_in_zone": 15,
    "first_point": {
        "ts": "2026-07-17T05:20:41+00:00",
        "lat": 35.0303832999999968933479976840317249298095703125,
        "lon": 129.11664999999999281499185599386692047119140625
    },
    "last_point": {
        "ts": "2026-07-17T06:35:43+00:00",
        "lat": 35.00670000000000214868123293854296207427978515625,
        "lon": 128.992088300000006029222276993095874786376953125
    }
}
Methodology: 2026.01.18

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.