KUKDONG3HO

Vessel information

Vessel Name KUKDONG3HO
MMSI 440112380
Vessel Type Tanker
Flag 🏳️ REPUBLIC OF KOREA
Call Sign 200043
Length 47 m
Beam 4 m

Detected Events (22)

Sts🛰️✗ Strait of Gibraltar Surveillance Zone
Jul 16, 2026 02:03 UTC 67/100 ▼
Vessel A: IMO 9181352 (BUKWANG) REPUBLIC OF KOREA
Vessel B: MMSI 440112380 (KUKDONG3HO) REPUBLIC OF KOREA
  • Minimum Distance: 6 meters
  • Average Distance: 14 meters
  • Duration: 34 minutes
  • Period: 2026-07-16T02:03:47+00:00 to 2026-07-16T02:38:17+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.7 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 67/100

Moderate-confidence STS candidate. Two tankers (BUKWANG and KUKDONG3HO) maintained close proximity (min 6m, avg 14m) for 34 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.7 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 6m, avg 14m
Duration5/25Duration 34 minutes
Speed Stability12/20both very slow; somewhat variable speeds
Distance Consistency15/15Distance variance ±6m
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: 2026-07-16T08:45:07.360809+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440191310,
        "imo": 9181352,
        "name": "BUKWANG",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440112380,
        "name": "KUKDONG3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 6.4000000000000003552713678800500929355621337890625,
    "avg_distance_m": 14.199999999999999289457264239899814128875732421875,
    "distance_consistency_m": 6,
    "duration_minutes": 34.5,
    "overlap_duration_s": 2070,
    "speed_a_avg": 0.13000000000000000444089209850062616169452667236328125,
    "speed_a_std": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_b_avg": 0.70999999999999996447286321199499070644378662109375,
    "speed_b_std": 0.58999999999999996891375531049561686813831329345703125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.13000000000000000444089209850062616169452667236328125,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.70999999999999996447286321199499070644378662109375,
            "max_sog": 1.5
        }
    },
    "time_window": {
        "start": "2026-07-16T02:03:47+00:00",
        "end": "2026-07-16T02:38:17+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 67,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 6m, avg 14m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 34 minutes"
            },
            "speed_stability": {
                "score": 12,
                "max": 20,
                "detail": "both very slow; somewhat variable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b16m"
            },
            "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 (BUKWANG and KUKDONG3HO) maintained close proximity (min 6m, avg 14m) for 34 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.7 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": 35.029514100000000098589225672185420989990234375,
            "lon": 129.07296400000001312946551479399204254150390625
        },
        "time_window": {
            "start_ts": "2026-07-16T02:03:47+00:00",
            "end_ts": "2026-07-16T02:38:17+00:00"
        },
        "searched_at": "2026-07-16T08:45:07.360809+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Strait of Gibraltar Surveillance Zone
Jul 16, 2026 02:01 UTC 72/100 ▼
Vessel A: MMSI 440112380 (KUKDONG3HO) REPUBLIC OF KOREA
Vessel B: MMSI 440156960 (SUNGJIN ACE) REPUBLIC OF KOREA
  • Minimum Distance: 54 meters
  • Average Distance: 60 meters
  • Duration: 30 minutes
  • Period: 2026-07-16T02:01:33+00:00 to 2026-07-16T02:31:53+00:00
  • Vessel A Avg Speed: 0.4 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 72/100

Moderate-confidence STS candidate. Two tankers (KUKDONG3HO and SUNGJIN ACE) maintained close proximity (min 54m, avg 60m) for 30 minutes. Both vessels were slow-moving (avg speeds 0.4 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 54m, avg 60m
Duration5/25Duration 30 minutes
Speed Stability17/20both nearly stationary; stable speeds
Distance Consistency15/15Distance variance ±5m
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: 2026-07-16T08:45:12.149112+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440112380,
        "name": "KUKDONG3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440156960,
        "name": "SUNGJIN ACE",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 54.10000000000000142108547152020037174224853515625,
    "avg_distance_m": 60.10000000000000142108547152020037174224853515625,
    "distance_consistency_m": 4.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 30.300000000000000710542735760100185871124267578125,
    "overlap_duration_s": 1820,
    "speed_a_avg": 0.440000000000000002220446049250313080847263336181640625,
    "speed_a_std": 0.450000000000000011102230246251565404236316680908203125,
    "speed_b_avg": 0.11999999999999999555910790149937383830547332763671875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.440000000000000002220446049250313080847263336181640625,
            "max_sog": 1.5
        },
        "vessel_b": {
            "avg_sog": 0.11999999999999999555910790149937383830547332763671875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-07-16T02:01:33+00:00",
        "end": "2026-07-16T02:31:53+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 72,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 54m, avg 60m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 30 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; 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": "Moderate-confidence STS candidate. Two tankers (KUKDONG3HO and SUNGJIN ACE) maintained close proximity (min 54m, avg 60m) for 30 minutes. Both vessels were slow-moving (avg speeds 0.4 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": 35.02952959999999649198798579163849353790283203125,
            "lon": 129.07322149999998828207026235759258270263671875
        },
        "time_window": {
            "start_ts": "2026-07-16T02:01:33+00:00",
            "end_ts": "2026-07-16T02:31:53+00:00"
        },
        "searched_at": "2026-07-16T08:45:12.149112+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Strait of Gibraltar Surveillance Zone
Jul 16, 2026 01:22 UTC 79/100 ▼
Vessel A: MMSI 440156960 (SUNGJIN ACE) REPUBLIC OF KOREA
Vessel B: MMSI 440112380 (KUKDONG3HO) REPUBLIC OF KOREA
  • Minimum Distance: 55 meters
  • Average Distance: 66 meters
  • Duration: 1h 11m
  • Period: 2026-07-16T01:27:48+00:00 to 2026-07-16T02:39:29+00:00
  • Vessel A Avg Speed: 0.4 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 (SUNGJIN ACE and KUKDONG3HO) maintained close proximity (min 55m, avg 66m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.4 and 0.5 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 55m, avg 66m
Duration15/25Duration 72 minutes
Speed Stability14/20both nearly stationary; somewhat variable speeds
Distance Consistency15/15Distance variance ±14m
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": 440112380,
        "name": "KUKDONG3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 55.10000000000000142108547152020037174224853515625,
    "avg_distance_m": 65.7000000000000028421709430404007434844970703125,
    "distance_consistency_m": 14.5,
    "duration_minutes": 71.7000000000000028421709430404007434844970703125,
    "overlap_duration_s": 4301,
    "speed_a_avg": 0.38000000000000000444089209850062616169452667236328125,
    "speed_a_std": 0.5300000000000000266453525910037569701671600341796875,
    "speed_b_avg": 0.4899999999999999911182158029987476766109466552734375,
    "speed_b_std": 0.479999999999999982236431605997495353221893310546875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.38000000000000000444089209850062616169452667236328125,
            "max_sog": 1.899999999999999911182158029987476766109466552734375
        },
        "vessel_b": {
            "avg_sog": 0.4899999999999999911182158029987476766109466552734375,
            "max_sog": 1.5
        }
    },
    "time_window": {
        "start": "2026-07-16T01:27:48+00:00",
        "end": "2026-07-16T02:39:29+00:00"
    },
    "points_count": {
        "vessel_a": 18,
        "vessel_b": 18
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 79,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 55m, avg 66m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 72 minutes"
            },
            "speed_stability": {
                "score": 14,
                "max": 20,
                "detail": "both nearly stationary; somewhat variable 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 (SUNGJIN ACE and KUKDONG3HO) maintained close proximity (min 55m, avg 66m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.4 and 0.5 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 16, 2026 01:07 UTC 87/100 ▼
Vessel A: IMO 9181352 (BUKWANG) REPUBLIC OF KOREA
Vessel B: MMSI 440112380 (KUKDONG3HO) REPUBLIC OF KOREA
  • Minimum Distance: 6 meters
  • Average Distance: 13 meters
  • Duration: 1h 30m
  • Period: 2026-07-16T01:07:37+00:00 to 2026-07-16T02:38:17+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: 87/100

High-confidence STS candidate. Two tankers (BUKWANG and KUKDONG3HO) maintained close proximity (min 6m, avg 13m) for 91 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.5 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 6m, avg 13m
Duration20/25Duration 91 minutes
Speed Stability17/20both nearly stationary; stable speeds
Distance Consistency15/15Distance variance ±5m
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: 2026-07-16T07:45:11.339797+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440191310,
        "imo": 9181352,
        "name": "BUKWANG",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440112380,
        "name": "KUKDONG3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 6.4000000000000003552713678800500929355621337890625,
    "avg_distance_m": 13.4000000000000003552713678800500929355621337890625,
    "distance_consistency_m": 4.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 90.7000000000000028421709430404007434844970703125,
    "overlap_duration_s": 5440,
    "speed_a_avg": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_a_std": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_b_avg": 0.450000000000000011102230246251565404236316680908203125,
    "speed_b_std": 0.479999999999999982236431605997495353221893310546875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1499999999999999944488848768742172978818416595458984375,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.450000000000000011102230246251565404236316680908203125,
            "max_sog": 1.5
        }
    },
    "time_window": {
        "start": "2026-07-16T01:07:37+00:00",
        "end": "2026-07-16T02:38:17+00:00"
    },
    "points_count": {
        "vessel_a": 28,
        "vessel_b": 28
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 87,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 6m, avg 13m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 91 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; 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 (BUKWANG and KUKDONG3HO) maintained close proximity (min 6m, avg 13m) for 91 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.5 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": 35.0295966999999990321157383732497692108154296875,
            "lon": 129.07278700000000526415533386170864105224609375
        },
        "time_window": {
            "start_ts": "2026-07-16T01:07:37+00:00",
            "end_ts": "2026-07-16T02:38:17+00:00"
        },
        "searched_at": "2026-07-16T07:45:11.339797+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Strait of Gibraltar Surveillance Zone
Jul 16, 2026 01:07 UTC 70/100 ▼
Vessel A: MMSI 440192560 (JINSUNG) REPUBLIC OF KOREA
Vessel B: MMSI 440112380 (KUKDONG3HO) REPUBLIC OF KOREA
  • Minimum Distance: 43 meters
  • Average Distance: 55 meters
  • Duration: 39 minutes
  • Period: 2026-07-16T01:07:05+00:00 to 2026-07-16T01:46:52+00:00
  • Vessel A Avg Speed: 0.5 knots
  • Vessel B Avg Speed: 0.3 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (JINSUNG and KUKDONG3HO) maintained close proximity (min 43m, avg 55m) for 40 minutes. Both vessels were slow-moving (avg speeds 0.5 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 43m, avg 55m
Duration5/25Duration 40 minutes
Speed Stability15/20both very slow; stable speeds
Distance Consistency15/15Distance variance ±6m
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: 2026-07-16T07:45:08.950745+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440192560,
        "name": "JINSUNG",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440112380,
        "name": "KUKDONG3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 42.89999999999999857891452847979962825775146484375,
    "avg_distance_m": 55.2000000000000028421709430404007434844970703125,
    "distance_consistency_m": 6,
    "duration_minutes": 39.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 2387,
    "speed_a_avg": 0.5100000000000000088817841970012523233890533447265625,
    "speed_a_std": 0.330000000000000015543122344752191565930843353271484375,
    "speed_b_avg": 0.2800000000000000266453525910037569701671600341796875,
    "speed_b_std": 0.190000000000000002220446049250313080847263336181640625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.5100000000000000088817841970012523233890533447265625,
            "max_sog": 1.100000000000000088817841970012523233890533447265625
        },
        "vessel_b": {
            "avg_sog": 0.2800000000000000266453525910037569701671600341796875,
            "max_sog": 0.59999999999999997779553950749686919152736663818359375
        }
    },
    "time_window": {
        "start": "2026-07-16T01:07:05+00:00",
        "end": "2026-07-16T01:46:52+00:00"
    },
    "points_count": {
        "vessel_a": 10,
        "vessel_b": 10
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 43m, avg 55m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 40 minutes"
            },
            "speed_stability": {
                "score": 15,
                "max": 20,
                "detail": "both very slow; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b16m"
            },
            "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 (JINSUNG and KUKDONG3HO) maintained close proximity (min 43m, avg 55m) for 40 minutes. Both vessels were slow-moving (avg speeds 0.5 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 35.02953480000000041627572500146925449371337890625,
            "lon": 129.072809400000011237352737225592136383056640625
        },
        "time_window": {
            "start_ts": "2026-07-16T01:07:05+00:00",
            "end_ts": "2026-07-16T01:46:52+00:00"
        },
        "searched_at": "2026-07-16T07:45:08.950745+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 16, 2026 01:06 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 1h 25m
  • Data Points: 21 AIS positions
  • Period: 2026-07-16T01:06:13+00:00 to 2026-07-16T02:31:53+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 85.7000000000000028421709430404007434844970703125,
    "points_in_zone": 21,
    "first_point": {
        "ts": "2026-07-16T01:06:13+00:00",
        "lat": 35.02976170000000166737663676030933856964111328125,
        "lon": 129.07225329999999985375325195491313934326171875
    },
    "last_point": {
        "ts": "2026-07-16T02:31:53+00:00",
        "lat": 35.02951329999999785513864480890333652496337890625,
        "lon": 129.07302329999998846687958575785160064697265625
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Strait of Gibraltar Surveillance Zone
Jul 16, 2026 00:05 UTC 92/100 ▼
Vessel A: IMO 9181352 (BUKWANG) REPUBLIC OF KOREA
Vessel B: MMSI 440112380 (KUKDONG3HO) REPUBLIC OF KOREA
  • Minimum Distance: 4 meters
  • Average Distance: 13 meters
  • Duration: 2h 33m
  • Period: 2026-07-16T00:05:06+00:00 to 2026-07-16T02:38:17+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.4 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 92/100

High-confidence STS candidate. Two tankers (BUKWANG and KUKDONG3HO) maintained close proximity (min 4m, avg 13m) for 153 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.4 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 4m, avg 13m
Duration25/25Duration 153 minutes
Speed Stability17/20both nearly stationary; stable speeds
Distance Consistency15/15Distance variance ±5m
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: 2026-07-16T06:45:01.899431+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440191310,
        "imo": 9181352,
        "name": "BUKWANG",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440112380,
        "name": "KUKDONG3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 3.5,
    "avg_distance_m": 13.300000000000000710542735760100185871124267578125,
    "distance_consistency_m": 5.0999999999999996447286321199499070644378662109375,
    "duration_minutes": 153.19999999999998863131622783839702606201171875,
    "overlap_duration_s": 9191,
    "speed_a_avg": 0.14000000000000001332267629550187848508358001708984375,
    "speed_a_std": 0.14000000000000001332267629550187848508358001708984375,
    "speed_b_avg": 0.38000000000000000444089209850062616169452667236328125,
    "speed_b_std": 0.409999999999999975575093458246556110680103302001953125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.14000000000000001332267629550187848508358001708984375,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.38000000000000000444089209850062616169452667236328125,
            "max_sog": 1.5
        }
    },
    "time_window": {
        "start": "2026-07-16T00:05:06+00:00",
        "end": "2026-07-16T02:38:17+00:00"
    },
    "points_count": {
        "vessel_a": 45,
        "vessel_b": 45
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 92,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 4m, avg 13m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 153 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; 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 (BUKWANG and KUKDONG3HO) maintained close proximity (min 4m, avg 13m) for 153 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.4 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": 35.02957169999999820220182300545275211334228515625,
            "lon": 129.072778900000002977321855723857879638671875
        },
        "time_window": {
            "start_ts": "2026-07-16T00:05:06+00:00",
            "end_ts": "2026-07-16T02:38:17+00:00"
        },
        "searched_at": "2026-07-16T06:45:01.899431+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Strait of Gibraltar Surveillance Zone
Jul 16, 2026 00:02 UTC 82/100 ▼
Vessel A: MMSI 440192560 (JINSUNG) REPUBLIC OF KOREA
Vessel B: MMSI 440112380 (KUKDONG3HO) REPUBLIC OF KOREA
  • Minimum Distance: 37 meters
  • Average Distance: 55 meters
  • Duration: 1h 12m
  • Period: 2026-07-16T00:34:24+00:00 to 2026-07-16T01:46:52+00:00
  • Vessel A Avg Speed: 0.4 knots
  • Vessel B Avg Speed: 0.3 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 82/100

High-confidence STS candidate. Two tankers (JINSUNG and KUKDONG3HO) maintained close proximity (min 37m, avg 55m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.4 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 37m, avg 55m
Duration15/25Duration 72 minutes
Speed Stability17/20both nearly stationary; stable speeds
Distance Consistency15/15Distance variance ±8m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440192560,
        "name": "JINSUNG",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440112380,
        "name": "KUKDONG3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 36.7999999999999971578290569595992565155029296875,
    "avg_distance_m": 54.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 7.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 72.5,
    "overlap_duration_s": 4348,
    "speed_a_avg": 0.38000000000000000444089209850062616169452667236328125,
    "speed_a_std": 0.330000000000000015543122344752191565930843353271484375,
    "speed_b_avg": 0.340000000000000024424906541753443889319896697998046875,
    "speed_b_std": 0.2300000000000000099920072216264088638126850128173828125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.38000000000000000444089209850062616169452667236328125,
            "max_sog": 1.100000000000000088817841970012523233890533447265625
        },
        "vessel_b": {
            "avg_sog": 0.340000000000000024424906541753443889319896697998046875,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        }
    },
    "time_window": {
        "start": "2026-07-16T00:34:24+00:00",
        "end": "2026-07-16T01:46:52+00:00"
    },
    "points_count": {
        "vessel_a": 16,
        "vessel_b": 16
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 82,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 37m, avg 55m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 72 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b18m"
            },
            "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 (JINSUNG and KUKDONG3HO) maintained close proximity (min 37m, avg 55m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.4 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 16, 2026 00:00 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 2h 31m
  • Data Points: 39 AIS positions
  • Period: 2026-07-16T00:00:42+00:00 to 2026-07-16T02:31:53+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 151.19999999999998863131622783839702606201171875,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-07-16T00:00:42+00:00",
        "lat": 35.02948169999999805668267072178423404693603515625,
        "lon": 129.07288829999998824860085733234882354736328125
    },
    "last_point": {
        "ts": "2026-07-16T02:31:53+00:00",
        "lat": 35.02951329999999785513864480890333652496337890625,
        "lon": 129.07302329999998846687958575785160064697265625
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 16, 2026 00:00 UTC 75.0% ▼
  • Duration: 2h 31m
  • Radius: 49 meters
  • Data Points: 39 AIS positions
  • Centroid: 35.0296, 129.0728
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 48.7000000000000028421709430404007434844970703125,
    "duration_minutes": 151.19999999999998863131622783839702606201171875,
    "points": 39,
    "centroid": {
        "lat": 35.02960893846153567210421897470951080322265625,
        "lon": 129.072753410256410688816686160862445831298828125
    },
    "bbox": {
        "min_lat": 35.02938329999999922392817097716033458709716796875,
        "min_lon": 129.07225329999999985375325195491313934326171875,
        "max_lat": 35.02979500000000001591615728102624416351318359375,
        "max_lon": 129.073074999999988676790962927043437957763671875
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Sts🛰️✗ Strait of Gibraltar Surveillance Zone
Jul 15, 2026 23:16 UTC 95/100 ▼
Vessel A: MMSI 440192560 (JINSUNG) REPUBLIC OF KOREA
Vessel B: MMSI 440112380 (KUKDONG3HO) REPUBLIC OF KOREA
  • Minimum Distance: 34 meters
  • Average Distance: 53 meters
  • Duration: 2h 30m
  • Period: 2026-07-15T23:16:05+00:00 to 2026-07-16T01:46:52+00:00
  • Vessel A Avg Speed: 0.3 knots
  • Vessel B Avg Speed: 0.3 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (JINSUNG and KUKDONG3HO) maintained close proximity (min 34m, avg 53m) for 151 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 34m, avg 53m
Duration25/25Duration 151 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±7m
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: 2026-07-16T05:45:04.233612+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440192560,
        "name": "JINSUNG",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440112380,
        "name": "KUKDONG3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 34.10000000000000142108547152020037174224853515625,
    "avg_distance_m": 53.2000000000000028421709430404007434844970703125,
    "distance_consistency_m": 7.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 150.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 9047,
    "speed_a_avg": 0.309999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.270000000000000017763568394002504646778106689453125,
    "speed_b_avg": 0.309999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.2399999999999999911182158029987476766109466552734375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.309999999999999997779553950749686919152736663818359375,
            "max_sog": 1.100000000000000088817841970012523233890533447265625
        },
        "vessel_b": {
            "avg_sog": 0.309999999999999997779553950749686919152736663818359375,
            "max_sog": 1
        }
    },
    "time_window": {
        "start": "2026-07-15T23:16:05+00:00",
        "end": "2026-07-16T01:46:52+00:00"
    },
    "points_count": {
        "vessel_a": 31,
        "vessel_b": 31
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 34m, avg 53m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 151 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b17m"
            },
            "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 (JINSUNG and KUKDONG3HO) maintained close proximity (min 34m, avg 53m) for 151 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 35.02939549999999968576958053745329380035400390625,
            "lon": 129.07292929999999842038960196077823638916015625
        },
        "time_window": {
            "start_ts": "2026-07-15T23:16:05+00:00",
            "end_ts": "2026-07-16T01:46:52+00:00"
        },
        "searched_at": "2026-07-16T05:45:04.233612+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Strait of Gibraltar Surveillance Zone
Jul 15, 2026 23:04 UTC 92/100 ▼
Vessel A: IMO 9181352 (BUKWANG) REPUBLIC OF KOREA
Vessel B: MMSI 440112380 (KUKDONG3HO) REPUBLIC OF KOREA
  • Minimum Distance: 4 meters
  • Average Distance: 13 meters
  • Duration: 3h 33m
  • Period: 2026-07-15T23:04:26+00:00 to 2026-07-16T02:38:17+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.4 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 92/100

High-confidence STS candidate. Two tankers (BUKWANG and KUKDONG3HO) maintained close proximity (min 4m, avg 13m) for 214 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.4 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 4m, avg 13m
Duration25/25Duration 214 minutes
Speed Stability17/20both nearly stationary; stable speeds
Distance Consistency15/15Distance variance ±5m
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: 2026-07-16T05:45:01.400748+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440191310,
        "imo": 9181352,
        "name": "BUKWANG",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440112380,
        "name": "KUKDONG3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 3.5,
    "avg_distance_m": 13.199999999999999289457264239899814128875732421875,
    "distance_consistency_m": 4.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 213.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 12831,
    "speed_a_avg": 0.13000000000000000444089209850062616169452667236328125,
    "speed_a_std": 0.13000000000000000444089209850062616169452667236328125,
    "speed_b_avg": 0.36999999999999999555910790149937383830547332763671875,
    "speed_b_std": 0.38000000000000000444089209850062616169452667236328125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.13000000000000000444089209850062616169452667236328125,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.36999999999999999555910790149937383830547332763671875,
            "max_sog": 1.5
        }
    },
    "time_window": {
        "start": "2026-07-15T23:04:26+00:00",
        "end": "2026-07-16T02:38:17+00:00"
    },
    "points_count": {
        "vessel_a": 58,
        "vessel_b": 58
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 92,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 4m, avg 13m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 214 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; 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 (BUKWANG and KUKDONG3HO) maintained close proximity (min 4m, avg 13m) for 214 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.4 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": 35.02953850000000102227204479277133941650390625,
            "lon": 129.07281080000001338703441433608531951904296875
        },
        "time_window": {
            "start_ts": "2026-07-15T23:04:26+00:00",
            "end_ts": "2026-07-16T02:38:17+00:00"
        },
        "searched_at": "2026-07-16T05:45:01.400748+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 15, 2026 23:02 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 3h 29m
  • Data Points: 52 AIS positions
  • Period: 2026-07-15T23:02:52+00:00 to 2026-07-16T02:31:53+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 209,
    "points_in_zone": 52,
    "first_point": {
        "ts": "2026-07-15T23:02:52+00:00",
        "lat": 35.02961169999999668789314455352723598480224609375,
        "lon": 129.072546700000003738750820048153400421142578125
    },
    "last_point": {
        "ts": "2026-07-16T02:31:53+00:00",
        "lat": 35.02951329999999785513864480890333652496337890625,
        "lon": 129.07302329999998846687958575785160064697265625
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 15, 2026 23:02 UTC 75.0% ▼
  • Duration: 3h 29m
  • Radius: 53 meters
  • Data Points: 52 AIS positions
  • Centroid: 35.0296, 129.0728
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 52.89999999999999857891452847979962825775146484375,
    "duration_minutes": 209,
    "points": 52,
    "centroid": {
        "lat": 35.02957801923076175398819032125174999237060546875,
        "lon": 129.0727877519231014957767911255359649658203125
    },
    "bbox": {
        "min_lat": 35.029283300000003009699867106974124908447265625,
        "min_lon": 129.07225329999999985375325195491313934326171875,
        "max_lat": 35.02979500000000001591615728102624416351318359375,
        "max_lon": 129.07311329999998861239873804152011871337890625
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Sts🛰️✗ Strait of Gibraltar Surveillance Zone
Jul 15, 2026 22:08 UTC 95/100 ▼
Vessel A: MMSI 440192560 (JINSUNG) REPUBLIC OF KOREA
Vessel B: MMSI 440112380 (KUKDONG3HO) REPUBLIC OF KOREA
  • Minimum Distance: 34 meters
  • Average Distance: 53 meters
  • Duration: 3h 38m
  • Period: 2026-07-15T22:08:23+00:00 to 2026-07-16T01:46:52+00:00
  • Vessel A Avg Speed: 0.3 knots
  • Vessel B Avg Speed: 0.3 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (JINSUNG and KUKDONG3HO) maintained close proximity (min 34m, avg 53m) for 218 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 34m, avg 53m
Duration25/25Duration 218 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±6m
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: 2026-07-16T04:45:04.648112+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440192560,
        "name": "JINSUNG",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440112380,
        "name": "KUKDONG3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 34.10000000000000142108547152020037174224853515625,
    "avg_distance_m": 52.60000000000000142108547152020037174224853515625,
    "distance_consistency_m": 6.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 218.5,
    "overlap_duration_s": 13109,
    "speed_a_avg": 0.309999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.2399999999999999911182158029987476766109466552734375,
    "speed_b_avg": 0.299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.2300000000000000099920072216264088638126850128173828125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.309999999999999997779553950749686919152736663818359375,
            "max_sog": 1.100000000000000088817841970012523233890533447265625
        },
        "vessel_b": {
            "avg_sog": 0.299999999999999988897769753748434595763683319091796875,
            "max_sog": 1
        }
    },
    "time_window": {
        "start": "2026-07-15T22:08:23+00:00",
        "end": "2026-07-16T01:46:52+00:00"
    },
    "points_count": {
        "vessel_a": 43,
        "vessel_b": 43
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 34m, avg 53m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 218 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b16m"
            },
            "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 (JINSUNG and KUKDONG3HO) maintained close proximity (min 34m, avg 53m) for 218 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 35.029413599999998041312210261821746826171875,
            "lon": 129.07284789999999929932528175413608551025390625
        },
        "time_window": {
            "start_ts": "2026-07-15T22:08:23+00:00",
            "end_ts": "2026-07-16T01:46:52+00:00"
        },
        "searched_at": "2026-07-16T04:45:04.648112+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Strait of Gibraltar Surveillance Zone
Jul 15, 2026 22:07 UTC 92/100 ▼
Vessel A: IMO 9181352 (BUKWANG) REPUBLIC OF KOREA
Vessel B: MMSI 440112380 (KUKDONG3HO) REPUBLIC OF KOREA
  • Minimum Distance: 4 meters
  • Average Distance: 13 meters
  • Duration: 4h 30m
  • Period: 2026-07-15T22:07:56+00:00 to 2026-07-16T02:38:17+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: 92/100

High-confidence STS candidate. Two tankers (BUKWANG and KUKDONG3HO) maintained close proximity (min 4m, avg 13m) for 270 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 4m, avg 13m
Duration25/25Duration 270 minutes
Speed Stability17/20both nearly stationary; 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: 2026-07-16T04:45:07.213937+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440191310,
        "imo": 9181352,
        "name": "BUKWANG",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440112380,
        "name": "KUKDONG3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 3.5,
    "avg_distance_m": 12.800000000000000710542735760100185871124267578125,
    "distance_consistency_m": 4.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 270.3999999999999772626324556767940521240234375,
    "overlap_duration_s": 16221,
    "speed_a_avg": 0.14000000000000001332267629550187848508358001708984375,
    "speed_a_std": 0.13000000000000000444089209850062616169452667236328125,
    "speed_b_avg": 0.340000000000000024424906541753443889319896697998046875,
    "speed_b_std": 0.35999999999999998667732370449812151491641998291015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.14000000000000001332267629550187848508358001708984375,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.340000000000000024424906541753443889319896697998046875,
            "max_sog": 1.5
        }
    },
    "time_window": {
        "start": "2026-07-15T22:07:56+00:00",
        "end": "2026-07-16T02:38:17+00:00"
    },
    "points_count": {
        "vessel_a": 71,
        "vessel_b": 71
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 92,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 4m, avg 13m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 270 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; 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 (BUKWANG and KUKDONG3HO) maintained close proximity (min 4m, avg 13m) for 270 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."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 35.02954849999999709098119637928903102874755859375,
            "lon": 129.072747700000007853304850868880748748779296875
        },
        "time_window": {
            "start_ts": "2026-07-15T22:07:56+00:00",
            "end_ts": "2026-07-16T02:38:17+00:00"
        },
        "searched_at": "2026-07-16T04:45:07.213937+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 15, 2026 22:06 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 4h 24m
  • Data Points: 67 AIS positions
  • Period: 2026-07-15T22:06:59+00:00 to 2026-07-16T02:31:53+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 264.8999999999999772626324556767940521240234375,
    "points_in_zone": 67,
    "first_point": {
        "ts": "2026-07-15T22:06:59+00:00",
        "lat": 35.0296282999999988305717124603688716888427734375,
        "lon": 129.07246670000000676736817695200443267822265625
    },
    "last_point": {
        "ts": "2026-07-16T02:31:53+00:00",
        "lat": 35.02951329999999785513864480890333652496337890625,
        "lon": 129.07302329999998846687958575785160064697265625
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 15, 2026 22:06 UTC 75.0% ▼
  • Duration: 4h 24m
  • Radius: 50 meters
  • Data Points: 67 AIS positions
  • Centroid: 35.0296, 129.0727
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 49.89999999999999857891452847979962825775146484375,
    "duration_minutes": 264.8999999999999772626324556767940521240234375,
    "points": 67,
    "centroid": {
        "lat": 35.02959062388060118564681033603847026824951171875,
        "lon": 129.072709249253790630973526276648044586181640625
    },
    "bbox": {
        "min_lat": 35.029283300000003009699867106974124908447265625,
        "min_lon": 129.07225329999999985375325195491313934326171875,
        "max_lat": 35.02979500000000001591615728102624416351318359375,
        "max_lon": 129.07311329999998861239873804152011871337890625
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Sts Strait of Gibraltar Surveillance Zone
Jul 15, 2026 21:40 UTC 95/100 ▼
Vessel A: MMSI 440192560 (JINSUNG) REPUBLIC OF KOREA
Vessel B: MMSI 440112380 (KUKDONG3HO) REPUBLIC OF KOREA
  • Minimum Distance: 34 meters
  • Average Distance: 53 meters
  • Duration: 4h 4m
  • Period: 2026-07-15T21:42:49+00:00 to 2026-07-16T01:46:52+00:00
  • Vessel A Avg Speed: 0.3 knots
  • Vessel B Avg Speed: 0.3 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (JINSUNG and KUKDONG3HO) maintained close proximity (min 34m, avg 53m) for 244 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 34m, avg 53m
Duration25/25Duration 244 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±7m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440192560,
        "name": "JINSUNG",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440112380,
        "name": "KUKDONG3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 34.10000000000000142108547152020037174224853515625,
    "avg_distance_m": 53.2000000000000028421709430404007434844970703125,
    "distance_consistency_m": 7.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 244.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 14643,
    "speed_a_avg": 0.330000000000000015543122344752191565930843353271484375,
    "speed_a_std": 0.289999999999999980015985556747182272374629974365234375,
    "speed_b_avg": 0.2800000000000000266453525910037569701671600341796875,
    "speed_b_std": 0.2300000000000000099920072216264088638126850128173828125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.330000000000000015543122344752191565930843353271484375,
            "max_sog": 1.5
        },
        "vessel_b": {
            "avg_sog": 0.2800000000000000266453525910037569701671600341796875,
            "max_sog": 1
        }
    },
    "time_window": {
        "start": "2026-07-15T21:42:49+00:00",
        "end": "2026-07-16T01:46:52+00:00"
    },
    "points_count": {
        "vessel_a": 47,
        "vessel_b": 47
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 34m, avg 53m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 244 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b17m"
            },
            "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 (JINSUNG and KUKDONG3HO) maintained close proximity (min 34m, avg 53m) for 244 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.3 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Strait of Gibraltar Surveillance Zone
Jul 15, 2026 21:39 UTC 92/100 ▼
Vessel A: IMO 9181352 (BUKWANG) REPUBLIC OF KOREA
Vessel B: MMSI 440112380 (KUKDONG3HO) REPUBLIC OF KOREA
  • Minimum Distance: 4 meters
  • Average Distance: 13 meters
  • Duration: 4h 58m
  • Period: 2026-07-15T21:39:24+00:00 to 2026-07-16T02:38:17+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: 92/100

High-confidence STS candidate. Two tankers (BUKWANG and KUKDONG3HO) maintained close proximity (min 4m, avg 13m) for 299 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 4m, avg 13m
Duration25/25Duration 299 minutes
Speed Stability17/20both nearly stationary; 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": 440191310,
        "imo": 9181352,
        "name": "BUKWANG",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440112380,
        "name": "KUKDONG3HO",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 3.5,
    "avg_distance_m": 12.699999999999999289457264239899814128875732421875,
    "distance_consistency_m": 4.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 298.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 17933,
    "speed_a_avg": 0.14000000000000001332267629550187848508358001708984375,
    "speed_a_std": 0.13000000000000000444089209850062616169452667236328125,
    "speed_b_avg": 0.330000000000000015543122344752191565930843353271484375,
    "speed_b_std": 0.34999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.14000000000000001332267629550187848508358001708984375,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0.330000000000000015543122344752191565930843353271484375,
            "max_sog": 1.5
        }
    },
    "time_window": {
        "start": "2026-07-15T21:39:24+00:00",
        "end": "2026-07-16T02:38:17+00:00"
    },
    "points_count": {
        "vessel_a": 77,
        "vessel_b": 77
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 92,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 4m, avg 13m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 299 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; 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 (BUKWANG and KUKDONG3HO) maintained close proximity (min 4m, avg 13m) for 299 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 15, 2026 21:15 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 5h 16m
  • Data Points: 77 AIS positions
  • Period: 2026-07-15T21:15:50+00:00 to 2026-07-16T02:31:53+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 316.1000000000000227373675443232059478759765625,
    "points_in_zone": 77,
    "first_point": {
        "ts": "2026-07-15T21:15:50+00:00",
        "lat": 35.0299432999999993398887454532086849212646484375,
        "lon": 129.06586329999998952189343981444835662841796875
    },
    "last_point": {
        "ts": "2026-07-16T02:31:53+00:00",
        "lat": 35.02951329999999785513864480890333652496337890625,
        "lon": 129.07302329999998846687958575785160064697265625
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 15, 2026 21:15 UTC 75.0% ▼
  • Duration: 5h 16m
  • Radius: 879 meters
  • Data Points: 77 AIS positions
  • Centroid: 35.0295, 129.0723
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 878.6000000000000227373675443232059478759765625,
    "duration_minutes": 316.1000000000000227373675443232059478759765625,
    "points": 77,
    "centroid": {
        "lat": 35.0295187662337781375754275359213352203369140625,
        "lon": 129.072310081818187654789653606712818145751953125
    },
    "bbox": {
        "min_lat": 35.02673829999999810524968779645860195159912109375,
        "min_lon": 129.062886700000007067501428537070751190185546875,
        "max_lat": 35.0299432999999993398887454532086849212646484375,
        "max_lon": 129.07311329999998861239873804152011871337890625
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18

Recent Position Data

Time (UTC) Lat Lon Speed Course Zone
Jul 18 10:57 35.1900 129.2500 10.1 kn 214.9° Archipelago Sea Sanction Zone
Jul 18 10:54 35.1963 129.2554 10.5 kn 213.5° Archipelago Sea Sanction Zone
Jul 18 10:53 35.1988 129.2573 10.6 kn 213.3° Archipelago Sea Sanction Zone
Jul 18 10:52 35.2013 129.2593 10.3 kn 214.4° Archipelago Sea Sanction Zone
Jul 18 10:47 35.2136 129.2691 10.5 kn 212.6° Archipelago Sea Sanction Zone
Jul 18 10:42 35.2267 129.2795 10.3 kn 212.7° Archipelago Sea Sanction Zone
Jul 18 10:41 35.2292 129.2814 10.5 kn 211.6° Archipelago Sea Sanction Zone
Jul 18 10:35 35.2440 129.2929 10.5 kn 214.3° Archipelago Sea Sanction Zone
Jul 18 03:05 35.2850 129.3313 6.3 kn 30.7° Archipelago Sea Sanction Zone
Jul 18 02:43 35.2520 129.3028 7.3 kn 32.7° Archipelago Sea Sanction Zone
Jul 18 02:39 35.2458 129.2976 7.4 kn 33.5° Archipelago Sea Sanction Zone
Jul 18 02:36 35.2402 129.2929 7.3 kn 36.2° Archipelago Sea Sanction Zone
Jul 18 02:26 35.2229 129.2797 7.7 kn 32.4° Archipelago Sea Sanction Zone
Jul 18 02:18 35.2088 129.2694 7.8 kn 31.1° Archipelago Sea Sanction Zone
Jul 18 02:15 35.2024 129.2647 7.9 kn 32.8° Archipelago Sea Sanction Zone
Jul 18 02:11 35.1948 129.2589 8.3 kn 34.9° Archipelago Sea Sanction Zone
Jul 18 02:10 35.1929 129.2574 8.3 kn 33.1° Archipelago Sea Sanction Zone
Jul 18 02:09 35.1909 129.2557 8.9 kn 32.3° Archipelago Sea Sanction Zone
Jul 18 02:08 35.1888 129.2541 8.8 kn 33.0° Archipelago Sea Sanction Zone
Jul 18 02:07 35.1867 129.2525 8.8 kn 32.4° Archipelago Sea Sanction Zone

Showing 20 of 100 recent positions.

Data Source

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

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