JINSUNG

Vessel information

Vessel Name JINSUNG
MMSI 440192560
Vessel Type Tanker
Flag 🏳️ REPUBLIC OF KOREA
Call Sign 230044

Detected Events (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
Sts🛰️✗ Strait of Gibraltar Surveillance Zone
Jul 16, 2026 01:03 UTC 72/100 ▼
Vessel A: MMSI 440192560 (JINSUNG) REPUBLIC OF KOREA
Vessel B: IMO 9181352 (BUKWANG) REPUBLIC OF KOREA
  • Minimum Distance: 40 meters
  • Average Distance: 45 meters
  • Duration: 43 minutes
  • Period: 2026-07-16T01:03:45+00:00 to 2026-07-16T01:46:52+00:00
  • Vessel A Avg Speed: 0.5 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 72/100

Moderate-confidence STS candidate. Two tankers (JINSUNG and BUKWANG) maintained close proximity (min 40m, avg 45m) for 43 minutes. Both vessels were slow-moving (avg speeds 0.5 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 40m, avg 45m
Duration5/25Duration 43 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: 2026-07-16T07:45:06.505146+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440192560,
        "name": "JINSUNG",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440191310,
        "imo": 9181352,
        "name": "BUKWANG",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 40.2000000000000028421709430404007434844970703125,
    "avg_distance_m": 44.89999999999999857891452847979962825775146484375,
    "distance_consistency_m": 4,
    "duration_minutes": 43.10000000000000142108547152020037174224853515625,
    "overlap_duration_s": 2587,
    "speed_a_avg": 0.460000000000000019984014443252817727625370025634765625,
    "speed_a_std": 0.34999999999999997779553950749686919152736663818359375,
    "speed_b_avg": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_b_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.460000000000000019984014443252817727625370025634765625,
            "max_sog": 1.100000000000000088817841970012523233890533447265625
        },
        "vessel_b": {
            "avg_sog": 0.1600000000000000033306690738754696212708950042724609375,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "time_window": {
        "start": "2026-07-16T01:03:45+00:00",
        "end": "2026-07-16T01:46:52+00:00"
    },
    "points_count": {
        "vessel_a": 11,
        "vessel_b": 11
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 72,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 40m, avg 45m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 43 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": "Moderate-confidence STS candidate. Two tankers (JINSUNG and BUKWANG) maintained close proximity (min 40m, avg 45m) for 43 minutes. Both vessels were slow-moving (avg speeds 0.5 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 35.02951560000000341688064509071409702301025390625,
            "lon": 129.0728033999999979641870595514774322509765625
        },
        "time_window": {
            "start_ts": "2026-07-16T01:03:45+00:00",
            "end_ts": "2026-07-16T01:46:52+00:00"
        },
        "searched_at": "2026-07-16T07:45:06.505146+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 00:05 UTC 82/100 ▼
Vessel A: MMSI 440192560 (JINSUNG) REPUBLIC OF KOREA
Vessel B: IMO 9181352 (BUKWANG) REPUBLIC OF KOREA
  • Minimum Distance: 30 meters
  • Average Distance: 44 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: 0.2 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 82/100

High-confidence STS candidate. Two tankers (JINSUNG and BUKWANG) maintained close proximity (min 30m, avg 44m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.4 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 30m, avg 44m
Duration15/25Duration 72 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
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440192560,
        "name": "JINSUNG",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440191310,
        "imo": 9181352,
        "name": "BUKWANG",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 30.300000000000000710542735760100185871124267578125,
    "avg_distance_m": 43.7000000000000028421709430404007434844970703125,
    "distance_consistency_m": 4.9000000000000003552713678800500929355621337890625,
    "duration_minutes": 72.5,
    "overlap_duration_s": 4348,
    "speed_a_avg": 0.38000000000000000444089209850062616169452667236328125,
    "speed_a_std": 0.330000000000000015543122344752191565930843353271484375,
    "speed_b_avg": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_b_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.38000000000000000444089209850062616169452667236328125,
            "max_sog": 1.100000000000000088817841970012523233890533447265625
        },
        "vessel_b": {
            "avg_sog": 0.1600000000000000033306690738754696212708950042724609375,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "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 30m, avg 44m"
            },
            "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 \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 (JINSUNG and BUKWANG) maintained close proximity (min 30m, avg 44m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.4 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
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 00:02 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 1h 44m
  • Data Points: 20 AIS positions
  • Period: 2026-07-16T00:02:24+00:00 to 2026-07-16T01:46:52+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 104.5,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-07-16T00:02:24+00:00",
        "lat": 35.029173299999996515907696448266506195068359375,
        "lon": 129.073139999999995097823557443916797637939453125
    },
    "last_point": {
        "ts": "2026-07-16T01:46:52+00:00",
        "lat": 35.02960829999999958772605168633162975311279296875,
        "lon": 129.073376700000011396696208976209163665771484375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 16, 2026 00:02 UTC 75.0% ▼
  • Duration: 1h 44m
  • Radius: 51 meters
  • Data Points: 20 AIS positions
  • Centroid: 35.0293, 129.0730
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 51.10000000000000142108547152020037174224853515625,
    "duration_minutes": 104.5,
    "points": 20,
    "centroid": {
        "lat": 35.0292966599999999743886291980743408203125,
        "lon": 129.073030084999999189676600508391857147216796875
    },
    "bbox": {
        "min_lat": 35.02896170000000353184077539481222629547119140625,
        "min_lon": 129.072599999999994224708643741905689239501953125,
        "max_lat": 35.02960829999999958772605168633162975311279296875,
        "max_lon": 129.073376700000011396696208976209163665771484375
    },
    "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 23:16 UTC 95/100 ▼
Vessel A: MMSI 440192560 (JINSUNG) REPUBLIC OF KOREA
Vessel B: IMO 9181352 (BUKWANG) REPUBLIC OF KOREA
  • Minimum Distance: 17 meters
  • Average Distance: 42 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: 0.2 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (JINSUNG and BUKWANG) maintained close proximity (min 17m, avg 42m) for 151 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 17m, avg 42m
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: 2026-07-16T05:45:06.679889+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440192560,
        "name": "JINSUNG",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440191310,
        "imo": 9181352,
        "name": "BUKWANG",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 17.39999999999999857891452847979962825775146484375,
    "avg_distance_m": 42.10000000000000142108547152020037174224853515625,
    "distance_consistency_m": 6.9000000000000003552713678800500929355621337890625,
    "duration_minutes": 150.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 9047,
    "speed_a_avg": 0.309999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.270000000000000017763568394002504646778106689453125,
    "speed_b_avg": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_b_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.309999999999999997779553950749686919152736663818359375,
            "max_sog": 1.100000000000000088817841970012523233890533447265625
        },
        "vessel_b": {
            "avg_sog": 0.1499999999999999944488848768742172978818416595458984375,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "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 17m, avg 42m"
            },
            "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 BUKWANG) maintained close proximity (min 17m, avg 42m) for 151 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 35.029352799999998069324647076427936553955078125,
            "lon": 129.072961999999989757270668633282184600830078125
        },
        "time_window": {
            "start_ts": "2026-07-15T23:16:05+00:00",
            "end_ts": "2026-07-16T01:46:52+00:00"
        },
        "searched_at": "2026-07-16T05:45:06.679889+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 23:01 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 2h 45m
  • Data Points: 32 AIS positions
  • Period: 2026-07-15T23:01:44+00:00 to 2026-07-16T01:46:52+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 165.099999999999994315658113919198513031005859375,
    "points_in_zone": 32,
    "first_point": {
        "ts": "2026-07-15T23:01:44+00:00",
        "lat": 35.02924329999999741858118795789778232574462890625,
        "lon": 129.07288330000000087238731794059276580810546875
    },
    "last_point": {
        "ts": "2026-07-16T01:46:52+00:00",
        "lat": 35.02960829999999958772605168633162975311279296875,
        "lon": 129.073376700000011396696208976209163665771484375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 15, 2026 23:01 UTC 75.0% ▼
  • Duration: 2h 45m
  • Radius: 62 meters
  • Data Points: 32 AIS positions
  • Centroid: 35.0292, 129.0731
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 62,
    "duration_minutes": 165.099999999999994315658113919198513031005859375,
    "points": 32,
    "centroid": {
        "lat": 35.0292116124999921566995908506214618682861328125,
        "lon": 129.0730980187499881139956414699554443359375
    },
    "bbox": {
        "min_lat": 35.02885169999999703804860473610460758209228515625,
        "min_lon": 129.072599999999994224708643741905689239501953125,
        "max_lat": 35.02960829999999958772605168633162975311279296875,
        "max_lon": 129.073431699999986221882863901555538177490234375
    },
    "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: IMO 9181352 (BUKWANG) REPUBLIC OF KOREA
  • Minimum Distance: 17 meters
  • Average Distance: 42 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: 0.1 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (JINSUNG and BUKWANG) maintained close proximity (min 17m, avg 42m) for 218 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 17m, avg 42m
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: 2026-07-16T04:45:01.937591+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440192560,
        "name": "JINSUNG",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440191310,
        "imo": 9181352,
        "name": "BUKWANG",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 17.39999999999999857891452847979962825775146484375,
    "avg_distance_m": 41.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 5.9000000000000003552713678800500929355621337890625,
    "duration_minutes": 218.5,
    "overlap_duration_s": 13109,
    "speed_a_avg": 0.309999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.2399999999999999911182158029987476766109466552734375,
    "speed_b_avg": 0.14000000000000001332267629550187848508358001708984375,
    "speed_b_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.309999999999999997779553950749686919152736663818359375,
            "max_sog": 1.100000000000000088817841970012523233890533447265625
        },
        "vessel_b": {
            "avg_sog": 0.14000000000000001332267629550187848508358001708984375,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "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 17m, avg 42m"
            },
            "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 BUKWANG) maintained close proximity (min 17m, avg 42m) for 218 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 35.02937250000000091176843852736055850982666015625,
            "lon": 129.072879800000009709037840366363525390625
        },
        "time_window": {
            "start_ts": "2026-07-15T22:08:23+00:00",
            "end_ts": "2026-07-16T01:46:52+00:00"
        },
        "searched_at": "2026-07-16T04:45:01.937591+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 22:08 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
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 15, 2026 22:00 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 3h 46m
  • Data Points: 44 AIS positions
  • Period: 2026-07-15T22:00:23+00:00 to 2026-07-16T01:46:52+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 226.5,
    "points_in_zone": 44,
    "first_point": {
        "ts": "2026-07-15T22:00:23+00:00",
        "lat": 35.029189999999999827196006663143634796142578125,
        "lon": 129.072824999999994588506524451076984405517578125
    },
    "last_point": {
        "ts": "2026-07-16T01:46:52+00:00",
        "lat": 35.02960829999999958772605168633162975311279296875,
        "lon": 129.073376700000011396696208976209163665771484375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 15, 2026 22:00 UTC 75.0% ▼
  • Duration: 3h 46m
  • Radius: 56 meters
  • Data Points: 44 AIS positions
  • Centroid: 35.0292, 129.0730
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 55.5,
    "duration_minutes": 226.5,
    "points": 44,
    "centroid": {
        "lat": 35.02923105909091106013875105418264865875244140625,
        "lon": 129.073021022727260742612998001277446746826171875
    },
    "bbox": {
        "min_lat": 35.02885169999999703804860473610460758209228515625,
        "min_lon": 129.072599999999994224708643741905689239501953125,
        "max_lat": 35.02960829999999958772605168633162975311279296875,
        "max_lon": 129.073431699999986221882863901555538177490234375
    },
    "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 95/100 ▼
Vessel A: MMSI 440192560 (JINSUNG) REPUBLIC OF KOREA
Vessel B: IMO 9181352 (BUKWANG) REPUBLIC OF KOREA
  • Minimum Distance: 17 meters
  • Average Distance: 43 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: 0.2 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (JINSUNG and BUKWANG) maintained close proximity (min 17m, avg 42m) for 244 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 17m, avg 42m
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": 440191310,
        "imo": 9181352,
        "name": "BUKWANG",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 17.39999999999999857891452847979962825775146484375,
    "avg_distance_m": 42.5,
    "distance_consistency_m": 7,
    "duration_minutes": 244.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 14643,
    "speed_a_avg": 0.330000000000000015543122344752191565930843353271484375,
    "speed_a_std": 0.289999999999999980015985556747182272374629974365234375,
    "speed_b_avg": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_b_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.330000000000000015543122344752191565930843353271484375,
            "max_sog": 1.5
        },
        "vessel_b": {
            "avg_sog": 0.1499999999999999944488848768742172978818416595458984375,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        }
    },
    "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 17m, avg 42m"
            },
            "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 BUKWANG) maintained close proximity (min 17m, avg 42m) for 244 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 15, 2026 21:30 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 4h 16m
  • Data Points: 50 AIS positions
  • Period: 2026-07-15T21:30:43+00:00 to 2026-07-16T01:46:52+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 256.1000000000000227373675443232059478759765625,
    "points_in_zone": 50,
    "first_point": {
        "ts": "2026-07-15T21:30:43+00:00",
        "lat": 35.02988500000000016143530956469476222991943359375,
        "lon": 129.062808300000000372165231965482234954833984375
    },
    "last_point": {
        "ts": "2026-07-16T01:46:52+00:00",
        "lat": 35.02960829999999958772605168633162975311279296875,
        "lon": 129.073376700000011396696208976209163665771484375
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 15, 2026 21:30 UTC 75.0% ▼
  • Duration: 4h 16m
  • Radius: 898 meters
  • Data Points: 50 AIS positions
  • Centroid: 35.0291, 129.0726
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 897.5,
    "duration_minutes": 256.1000000000000227373675443232059478759765625,
    "points": 50,
    "centroid": {
        "lat": 35.02911129800001077683191397227346897125244140625,
        "lon": 129.07259853400000793044455349445343017578125
    },
    "bbox": {
        "min_lat": 35.0260133000000024594555725343525409698486328125,
        "min_lon": 129.062808300000000372165231965482234954833984375,
        "max_lat": 35.02988500000000016143530956469476222991943359375,
        "max_lon": 129.073431699999986221882863901555538177490234375
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18

Recent Position Data

Time (UTC) Lat Lon Speed Course Zone
Jul 16 01:46 35.0296 129.0734 1.1 kn 16.6° Strait of Gibraltar Surveillance Zone
Jul 16 01:40 35.0292 129.0732 0.3 kn 19.5° Strait of Gibraltar Surveillance Zone
Jul 16 01:35 35.0293 129.0730 0.1 kn 153.7° Strait of Gibraltar Surveillance Zone
Jul 16 01:33 35.0294 129.0730 0.6 kn 174.8° Strait of Gibraltar Surveillance Zone
Jul 16 01:28 35.0293 129.0730 0.6 kn 341.2° Strait of Gibraltar Surveillance Zone
Jul 16 01:25 35.0293 129.0731 0.4 kn 284.3° Strait of Gibraltar Surveillance Zone
Jul 16 01:22 35.0293 129.0730 0.5 kn 215.0° Strait of Gibraltar Surveillance Zone
Jul 16 01:17 35.0294 129.0728 0.7 kn 321.7° Strait of Gibraltar Surveillance Zone
Jul 16 01:11 35.0294 129.0729 0.0 kn 50.4° Strait of Gibraltar Surveillance Zone
Jul 16 01:07 35.0294 129.0728 0.8 kn 127.2° Strait of Gibraltar Surveillance Zone
Jul 16 01:03 35.0296 129.0726 0.0 kn 85.9° Strait of Gibraltar Surveillance Zone
Jul 16 00:59 35.0294 129.0729 0.3 kn 297.8° Strait of Gibraltar Surveillance Zone
Jul 16 00:56 35.0293 129.0730 0.0 kn 151.0° Strait of Gibraltar Surveillance Zone
Jul 16 00:50 35.0293 129.0728 0.3 kn 276.4° Strait of Gibraltar Surveillance Zone
Jul 16 00:46 35.0293 129.0729 0.4 kn 248.7° Strait of Gibraltar Surveillance Zone
Jul 16 00:34 35.0291 129.0732 0.0 kn 347.5° Strait of Gibraltar Surveillance Zone
Jul 16 00:25 35.0290 129.0733 0.4 kn 292.6° Strait of Gibraltar Surveillance Zone
Jul 16 00:15 35.0290 129.0733 0.2 kn 56.8° Strait of Gibraltar Surveillance Zone
Jul 16 00:12 35.0290 129.0733 0.1 kn 182.2° Strait of Gibraltar Surveillance Zone
Jul 16 00:02 35.0292 129.0731 0.2 kn 310.1° Strait of Gibraltar Surveillance Zone

Showing 20 of 51 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.