KUM KANG

Vessel information

Vessel Name KUM KANG
MMSI 440172660
Vessel Type Tanker
Flag 🏳️ REPUBLIC OF KOREA
Call Sign 210011
Length 45 m
Beam 4 m

Detected Events (6)

Sts Strait of Gibraltar Surveillance Zone
Jul 18, 2026 09:13 UTC 80/100 ▼
Vessel A: IMO 9881134 (JS SUN) REPUBLIC OF KOREA
Vessel B: MMSI 440172660 (KUM KANG) REPUBLIC OF KOREA
  • Minimum Distance: 19 meters
  • Average Distance: 32 meters
  • Duration: 58 minutes
  • Period: 2026-07-18T09:17:31+00:00 to 2026-07-18T10:16:11+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (JS SUN and KUM KANG) maintained close proximity (min 19m, avg 32m) for 59 minutes. Both vessels were slow-moving (avg speeds 0.2 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 19m, avg 32m
Duration10/25Duration 59 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±16m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440326060,
        "imo": 9881134,
        "name": "JS SUN",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440172660,
        "name": "KUM KANG",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 18.800000000000000710542735760100185871124267578125,
    "avg_distance_m": 32.39999999999999857891452847979962825775146484375,
    "distance_consistency_m": 16.5,
    "duration_minutes": 58.7000000000000028421709430404007434844970703125,
    "overlap_duration_s": 3520,
    "speed_a_avg": 0.200000000000000011102230246251565404236316680908203125,
    "speed_a_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0.2399999999999999911182158029987476766109466552734375,
    "speed_b_std": 0.14000000000000001332267629550187848508358001708984375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.200000000000000011102230246251565404236316680908203125,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0.2399999999999999911182158029987476766109466552734375,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-07-18T09:17:31+00:00",
        "end": "2026-07-18T10:16:11+00:00"
    },
    "points_count": {
        "vessel_a": 14,
        "vessel_b": 14
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 19m, avg 32m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 59 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b116m"
            },
            "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 (JS SUN and KUM KANG) maintained close proximity (min 19m, avg 32m) for 59 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 18, 2026 09:04 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 1h 22m
  • Data Points: 20 AIS positions
  • Period: 2026-07-18T09:04:06+00:00 to 2026-07-18T10:26:57+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 82.7999999999999971578290569595992565155029296875,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-07-18T09:04:06+00:00",
        "lat": 35.02021830000000335303411702625453472137451171875,
        "lon": 129.05356330000000752988853491842746734619140625
    },
    "last_point": {
        "ts": "2026-07-18T10:26:57+00:00",
        "lat": 35.0303516999999970948920235969126224517822265625,
        "lon": 129.091551699999996571932570077478885650634765625
    }
}
Methodology: 2026.01.18
Sts Strait of Gibraltar Surveillance Zone
Jul 18, 2026 08:44 UTC 90/100 ▼
Vessel A: IMO 9881134 (JS SUN) REPUBLIC OF KOREA
Vessel B: MMSI 440172660 (KUM KANG) REPUBLIC OF KOREA
  • Minimum Distance: 19 meters
  • Average Distance: 30 meters
  • Duration: 1h 31m
  • Period: 2026-07-18T08:44:41+00:00 to 2026-07-18T10:16:11+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Strait of Gibraltar Surveillance Zone

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (JS SUN and KUM KANG) maintained close proximity (min 19m, avg 30m) for 92 minutes. Both vessels were slow-moving (avg speeds 0.2 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 19m, avg 30m
Duration20/25Duration 92 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±14m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 440326060,
        "imo": 9881134,
        "name": "JS SUN",
        "flag": "REPUBLIC OF KOREA"
    },
    "vessel_b": {
        "mmsi": 440172660,
        "name": "KUM KANG",
        "flag": "REPUBLIC OF KOREA"
    },
    "min_distance_m": 18.699999999999999289457264239899814128875732421875,
    "avg_distance_m": 29.89999999999999857891452847979962825775146484375,
    "distance_consistency_m": 14,
    "duration_minutes": 91.5,
    "overlap_duration_s": 5490,
    "speed_a_avg": 0.179999999999999993338661852249060757458209991455078125,
    "speed_a_std": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0.190000000000000002220446049250313080847263336181640625,
    "speed_b_std": 0.14000000000000001332267629550187848508358001708984375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.179999999999999993338661852249060757458209991455078125,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0.190000000000000002220446049250313080847263336181640625,
            "max_sog": 0.5
        }
    },
    "time_window": {
        "start": "2026-07-18T08:44:41+00:00",
        "end": "2026-07-18T10:16:11+00:00"
    },
    "points_count": {
        "vessel_a": 21,
        "vessel_b": 21
    },
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 19m, avg 30m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 92 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b114m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Strait of Gibraltar Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (JS SUN and KUM KANG) maintained close proximity (min 19m, avg 30m) for 92 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Strait of Gibraltar Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Loiter Strait of Gibraltar Surveillance Zone
Jul 18, 2026 08:03 UTC 75.0% ▼
  • Duration: 1h 36m
  • Radius: 1,025 meters
  • Data Points: 23 AIS positions
  • Centroid: 35.0197, 129.0535
  • Zone: Strait of Gibraltar Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 1024.799999999999954525264911353588104248046875,
    "duration_minutes": 96.900000000000005684341886080801486968994140625,
    "points": 23,
    "centroid": {
        "lat": 35.01974341304347859704648726619780063629150390625,
        "lon": 129.05345239130434720209450460970401763916015625
    },
    "bbox": {
        "min_lat": 35.01740829999999959909473545849323272705078125,
        "min_lon": 129.044806700000009413997759111225605010986328125,
        "max_lat": 35.02110669999999714718796894885599613189697265625,
        "max_lon": 129.064584999999993897290551103651523590087890625
    },
    "zone_id": "discovered_001"
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 18, 2026 08:03 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 2h 23m
  • Data Points: 36 AIS positions
  • Period: 2026-07-18T08:03:17+00:00 to 2026-07-18T10:26:57+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 143.69999999999998863131622783839702606201171875,
    "points_in_zone": 36,
    "first_point": {
        "ts": "2026-07-18T08:03:17+00:00",
        "lat": 35.02689000000000163481672643683850765228271484375,
        "lon": 129.051778299999995169855537824332714080810546875
    },
    "last_point": {
        "ts": "2026-07-18T10:26:57+00:00",
        "lat": 35.0303516999999970948920235969126224517822265625,
        "lon": 129.091551699999996571932570077478885650634765625
    }
}
Methodology: 2026.01.18
Zone Dwell Strait of Gibraltar Surveillance Zone
Jul 18, 2026 07:53 UTC 80.0% ▼
  • Zone: Strait of Gibraltar Surveillance Zone
  • Duration: 2h 33m
  • Data Points: 39 AIS positions
  • Period: 2026-07-18T07:53:15+00:00 to 2026-07-18T10:26:57+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_001",
    "zone_name": "Strait of Gibraltar Surveillance Zone",
    "dwell_minutes": 153.69999999999998863131622783839702606201171875,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-07-18T07:53:15+00:00",
        "lat": 35.03029000000000081627149484120309352874755859375,
        "lon": 129.069093299999991586446412838995456695556640625
    },
    "last_point": {
        "ts": "2026-07-18T10:26:57+00:00",
        "lat": 35.0303516999999970948920235969126224517822265625,
        "lon": 129.091551699999996571932570077478885650634765625
    }
}
Methodology: 2026.01.18

Recent Position Data

Time (UTC) Lat Lon Speed Course Zone
Jul 28 11:35 35.0192 129.0075 10.4 kn 69.8° Strait of Gibraltar Surveillance Zone
Jul 28 11:31 35.0158 128.9940 10.6 kn 73.0° Strait of Gibraltar Surveillance Zone
Jul 28 11:26 35.0113 128.9761 10.3 kn 72.3° Strait of Gibraltar Surveillance Zone
Jul 28 11:25 35.0105 128.9728 10.4 kn 74.6° Strait of Gibraltar Surveillance Zone
Jul 28 11:21 35.0073 128.9596 10.1 kn 71.4° Strait of Gibraltar Surveillance Zone
Jul 28 11:18 35.0052 128.9509 10.0 kn 74.4° Strait of Gibraltar Surveillance Zone
Jul 28 11:15 35.0027 128.9411 10.0 kn 72.7° Strait of Gibraltar Surveillance Zone
Jul 28 11:12 35.0003 128.9314 9.8 kn 74.6° Strait of Gibraltar Surveillance Zone
Jul 28 11:11 34.9995 128.9282 10.0 kn 70.5° Strait of Gibraltar Surveillance Zone
Jul 28 11:08 34.9971 128.9185 9.9 kn 76.0° Strait of Gibraltar Surveillance Zone
Jul 28 11:07 34.9964 128.9153 10.0 kn 71.9° Strait of Gibraltar Surveillance Zone
Jul 28 11:02 34.9924 128.8992 10.0 kn 74.6° Strait of Gibraltar Surveillance Zone
Jul 28 11:01 34.9917 128.8960 10.0 kn 74.1° Strait of Gibraltar Surveillance Zone
Jul 28 01:41 34.9972 128.9147 9.4 kn 252.3° Strait of Gibraltar Surveillance Zone
Jul 28 01:30 35.0050 128.9479 9.3 kn 255.5° Strait of Gibraltar Surveillance Zone
Jul 28 01:29 35.0057 128.9510 9.2 kn 255.8° Strait of Gibraltar Surveillance Zone
Jul 28 01:27 35.0070 128.9570 9.3 kn 253.8° Strait of Gibraltar Surveillance Zone
Jul 28 01:25 35.0079 128.9611 9.2 kn 256.5° Strait of Gibraltar Surveillance Zone
Jul 28 01:24 35.0084 128.9641 9.3 kn 258.5° Strait of Gibraltar Surveillance Zone
Jul 28 01:17 35.0138 128.9851 8.8 kn 250.4° Strait of Gibraltar Surveillance Zone

Showing 20 of 27 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.