LIAN XI HU

IMO 9747106

Vessel information

Vessel Name LIAN XI HU
IMO Number 9747106
MMSI 477021600
Vessel Type Tanker
Flag 🇭🇰 HONG KONG
Call Sign VRQT2
Length 183 m
Beam 32 m

Detected Events (100)

Zone Dwell Ceuta/Gibraltar STS Zone
Oct 27, 2026 20:02 UTC 80.0% ▼
  • Zone: Ceuta/Gibraltar STS Zone
  • Duration: 1h 14m
  • Data Points: 17 AIS positions
  • Period: 2026-10-27T20:02:29+00:00 to 2026-10-27T21:16:37+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_ceuta",
    "zone_name": "Ceuta\/Gibraltar STS Zone",
    "dwell_minutes": 74.099999999999994315658113919198513031005859375,
    "points_in_zone": 17,
    "first_point": {
        "ts": "2026-10-27T20:02:29+00:00",
        "lat": 35.9418916999999993322489899583160877227783203125,
        "lon": -5.5243532999999995780626704799942672252655029296875
    },
    "last_point": {
        "ts": "2026-10-27T21:16:37+00:00",
        "lat": 35.97409999999999996589394868351519107818603515625,
        "lon": -5.200269999999999726014721090905368328094482421875
    }
}
Methodology: 2026.01.18
Zone Dwell Ceuta/Gibraltar STS Zone
Oct 27, 2026 19:34 UTC 80.0% ▼
  • Zone: Ceuta/Gibraltar STS Zone
  • Duration: 1h 42m
  • Data Points: 25 AIS positions
  • Period: 2026-10-27T19:34:39+00:00 to 2026-10-27T21:16:37+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_ceuta",
    "zone_name": "Ceuta\/Gibraltar STS Zone",
    "dwell_minutes": 102,
    "points_in_zone": 25,
    "first_point": {
        "ts": "2026-10-27T19:34:39+00:00",
        "lat": 35.921210000000002082742867060005664825439453125,
        "lon": -5.65085830000000033379592423443682491779327392578125
    },
    "last_point": {
        "ts": "2026-10-27T21:16:37+00:00",
        "lat": 35.97409999999999996589394868351519107818603515625,
        "lon": -5.200269999999999726014721090905368328094482421875
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 27, 2026 09:30 UTC 75.0% ▼
  • Duration: 1h 45m
  • Radius: 733 meters
  • Data Points: 11 AIS positions
  • Centroid: 37.0749, -6.8736
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 733.1000000000000227373675443232059478759765625,
    "duration_minutes": 105.7999999999999971578290569595992565155029296875,
    "points": 11,
    "centroid": {
        "lat": 37.0748984909090921746610547415912151336669921875,
        "lon": -6.8735528909090906068968251929618418216705322265625
    },
    "bbox": {
        "min_lat": 37.06942000000000092541085905395448207855224609375,
        "min_lon": -6.876509999999999678266249247826635837554931640625,
        "max_lat": 37.07675330000000002428350853733718395233154296875,
        "max_lon": -6.86664329999999978326741256751120090484619140625
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 27, 2026 09:02 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 2h 32m
  • Data Points: 20 AIS positions
  • Period: 2026-10-27T09:02:10+00:00 to 2026-10-27T11:35:01+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 152.80000000000001136868377216160297393798828125,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-10-27T09:02:10+00:00",
        "lat": 37.11132169999999774745447211898863315582275390625,
        "lon": -6.8299000000000003041122909053228795528411865234375
    },
    "last_point": {
        "ts": "2026-10-27T11:35:01+00:00",
        "lat": 37.02603330000000170230123330838978290557861328125,
        "lon": -6.816681700000000176942194229923188686370849609375
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 27, 2026 08:34 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 3 hours
  • Data Points: 26 AIS positions
  • Period: 2026-10-27T08:34:30+00:00 to 2026-10-27T11:35:01+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 180.5,
    "points_in_zone": 26,
    "first_point": {
        "ts": "2026-10-27T08:34:30+00:00",
        "lat": 37.15876829999999841902535990811884403228759765625,
        "lon": -6.8975132999999999583451426587998867034912109375
    },
    "last_point": {
        "ts": "2026-10-27T11:35:01+00:00",
        "lat": 37.02603330000000170230123330838978290557861328125,
        "lon": -6.816681700000000176942194229923188686370849609375
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 27, 2026 07:57 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 3h 37m
  • Data Points: 27 AIS positions
  • Period: 2026-10-27T07:57:50+00:00 to 2026-10-27T11:35:01+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 217.19999999999998863131622783839702606201171875,
    "points_in_zone": 27,
    "first_point": {
        "ts": "2026-10-27T07:57:50+00:00",
        "lat": 37.16111829999999827123247087001800537109375,
        "lon": -6.8991533000000000441787051386199891567230224609375
    },
    "last_point": {
        "ts": "2026-10-27T11:35:01+00:00",
        "lat": 37.02603330000000170230123330838978290557861328125,
        "lon": -6.816681700000000176942194229923188686370849609375
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 27, 2026 06:03 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 5h 31m
  • Data Points: 30 AIS positions
  • Period: 2026-10-27T06:03:49+00:00 to 2026-10-27T11:35:01+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 331.19999999999998863131622783839702606201171875,
    "points_in_zone": 30,
    "first_point": {
        "ts": "2026-10-27T06:03:49+00:00",
        "lat": 37.16113500000000158252078108489513397216796875,
        "lon": -6.89914999999999967172925607883371412754058837890625
    },
    "last_point": {
        "ts": "2026-10-27T11:35:01+00:00",
        "lat": 37.02603330000000170230123330838978290557861328125,
        "lon": -6.816681700000000176942194229923188686370849609375
    }
}
Methodology: 2026.01.18
Sts Southern Öresund Surveillance Zone
Oct 27, 2026 04:39 UTC 80/100 ▼
Vessel A: IMO 9747106 (LIAN XI HU) HONG KONG
Vessel B: IMO 9686857 (STI COMANDANTE) Marshall Is
  • Minimum Distance: 288 meters
  • Average Distance: 290 meters
  • Duration: 1h 30m
  • Period: 2026-10-27T04:39:49+00:00 to 2026-10-27T06:09:49+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Southern Öresund Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (LIAN XI HU and STI COMANDANTE) maintained close proximity (min 288m, avg 290m) for 90 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern Öresund Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 288m, avg 290m
Duration20/25Duration 90 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 477021600,
        "imo": 9747106,
        "name": "LIAN XI HU",
        "flag": "HONG KONG"
    },
    "vessel_b": {
        "mmsi": 538005397,
        "imo": 9686857,
        "name": "STI COMANDANTE",
        "flag": "Marshall Is"
    },
    "min_distance_m": 287.6000000000000227373675443232059478759765625,
    "avg_distance_m": 289.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 90,
    "overlap_duration_s": 5400,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-10-27T04:39:49+00:00",
        "end": "2026-10-27T06:09:49+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 288m, avg 290m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 90 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Southern \u00d6resund Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (LIAN XI HU and STI COMANDANTE) maintained close proximity (min 288m, avg 290m) for 90 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern \u00d6resund Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 27, 2026 04:09 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 30 AIS positions
  • Period: 2026-10-27T04:51:49+00:00 to 2026-10-27T11:28:01+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 396.19999999999998863131622783839702606201171875,
    "points_in_zone": 30,
    "first_point": {
        "ts": "2026-10-27T04:51:49+00:00",
        "lat": 37.16115169999999778838173369877040386199951171875,
        "lon": -6.899171700000000129193722386844456195831298828125
    },
    "last_point": {
        "ts": "2026-10-27T11:28:01+00:00",
        "lat": 37.0466466999999965992174111306667327880859375,
        "lon": -6.834215000000000372892827726900577545166015625
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 27, 2026 04:09 UTC 75.0% ▼
  • Duration: 4h 24m
  • Radius: 270 meters
  • Data Points: 10 AIS positions
  • Centroid: 37.1609, -6.8990
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 269.5,
    "duration_minutes": 264.69999999999998863131622783839702606201171875,
    "points": 10,
    "centroid": {
        "lat": 37.1608886599999976851904648356139659881591796875,
        "lon": -6.8989923199999996228370946482755243778228759765625
    },
    "bbox": {
        "min_lat": 37.15876829999999841902535990811884403228759765625,
        "min_lon": -6.8991749999999996134647517465054988861083984375,
        "max_lat": 37.16115169999999778838173369877040386199951171875,
        "max_lon": -6.8975132999999999583451426587998867034912109375
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 27, 2026 03:15 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 27 AIS positions
  • Period: 2026-10-27T03:21:49+00:00 to 2026-10-27T09:52:08+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 390.30000000000001136868377216160297393798828125,
    "points_in_zone": 27,
    "first_point": {
        "ts": "2026-10-27T03:21:49+00:00",
        "lat": 37.16109329999999744131855550222098827362060546875,
        "lon": -6.89915169999999999816964191268198192119598388671875
    },
    "last_point": {
        "ts": "2026-10-27T09:52:08+00:00",
        "lat": 37.0761032999999997628037817776203155517578125,
        "lon": -6.87474170000000039948417906998656690120697021484375
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 27, 2026 03:15 UTC 75.0% ▼
  • Duration: 5h 18m
  • Radius: 274 meters
  • Data Points: 12 AIS positions
  • Centroid: 37.1609, -6.8990
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 274.30000000000001136868377216160297393798828125,
    "duration_minutes": 318.69999999999998863131622783839702606201171875,
    "points": 12,
    "centroid": {
        "lat": 37.16092693333333585314903757534921169281005859375,
        "lon": -6.89901846666666695995218105963431298732757568359375
    },
    "bbox": {
        "min_lat": 37.15876829999999841902535990811884403228759765625,
        "min_lon": -6.8991749999999996134647517465054988861083984375,
        "max_lat": 37.16115169999999778838173369877040386199951171875,
        "max_lon": -6.8975132999999999583451426587998867034912109375
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 27, 2026 02:09 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 28m
  • Data Points: 18 AIS positions
  • Period: 2026-10-27T02:27:49+00:00 to 2026-10-27T08:56:10+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 388.3999999999999772626324556767940521240234375,
    "points_in_zone": 18,
    "first_point": {
        "ts": "2026-10-27T02:27:49+00:00",
        "lat": 37.16111169999999930269041215069591999053955078125,
        "lon": -6.899210000000000064801497501321136951446533203125
    },
    "last_point": {
        "ts": "2026-10-27T08:56:10+00:00",
        "lat": 37.12844499999999925421434454619884490966796875,
        "lon": -6.83845330000000029002649171161465346813201904296875
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 27, 2026 02:09 UTC 75.0% ▼
  • Duration: 6h 24m
  • Radius: 278 meters
  • Data Points: 14 AIS positions
  • Centroid: 37.1610, -6.8990
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 278.30000000000001136868377216160297393798828125,
    "duration_minutes": 384.69999999999998863131622783839702606201171875,
    "points": 14,
    "centroid": {
        "lat": 37.1609555857142908052992424927651882171630859375,
        "lon": -6.89904452142857138596809818409383296966552734375
    },
    "bbox": {
        "min_lat": 37.15876829999999841902535990811884403228759765625,
        "min_lon": -6.899210000000000064801497501321136951446533203125,
        "max_lat": 37.16115169999999778838173369877040386199951171875,
        "max_lon": -6.8975132999999999583451426587998867034912109375
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 27, 2026 01:15 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 14 AIS positions
  • Period: 2026-10-27T01:21:49+00:00 to 2026-10-27T07:57:50+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 396,
    "points_in_zone": 14,
    "first_point": {
        "ts": "2026-10-27T01:21:49+00:00",
        "lat": 37.161083300000001372609403915703296661376953125,
        "lon": -6.8991816999999997506165527738630771636962890625
    },
    "last_point": {
        "ts": "2026-10-27T07:57:50+00:00",
        "lat": 37.16111829999999827123247087001800537109375,
        "lon": -6.8991533000000000441787051386199891567230224609375
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 27, 2026 01:15 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 5 meters
  • Data Points: 14 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 396,
    "points": 14,
    "centroid": {
        "lat": 37.16112094285714562147404649294912815093994140625,
        "lon": -6.8991636928571420384059820207767188549041748046875
    },
    "bbox": {
        "min_lat": 37.161079999999998335624695755541324615478515625,
        "min_lon": -6.899210000000000064801497501321136951446533203125,
        "max_lat": 37.16115169999999778838173369877040386199951171875,
        "max_lon": -6.89913829999999972386603985796682536602020263671875
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Sts Southern Öresund Surveillance Zone
Oct 27, 2026 00:45 UTC 65/100 ▼
Vessel A: IMO 9686857 (STI COMANDANTE) Marshall Is
Vessel B: IMO 9747106 (LIAN XI HU) HONG KONG
  • Minimum Distance: 287 meters
  • Average Distance: 290 meters
  • Duration: 36 minutes
  • Period: 2026-10-27T00:50:49+00:00 to 2026-10-27T01:26:46+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Southern Öresund Surveillance Zone

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (STI COMANDANTE and LIAN XI HU) maintained close proximity (min 287m, avg 290m) for 36 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern Öresund Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 287m, avg 290m
Duration5/25Duration 36 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538005397,
        "imo": 9686857,
        "name": "STI COMANDANTE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 477021600,
        "imo": 9747106,
        "name": "LIAN XI HU",
        "flag": "HONG KONG"
    },
    "min_distance_m": 287.30000000000001136868377216160297393798828125,
    "avg_distance_m": 289.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 36,
    "overlap_duration_s": 2157,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-10-27T00:50:49+00:00",
        "end": "2026-10-27T01:26:46+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 287m, avg 290m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 36 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Southern \u00d6resund Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (STI COMANDANTE and LIAN XI HU) maintained close proximity (min 287m, avg 290m) for 36 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern \u00d6resund Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 27, 2026 00:39 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 12m
  • Data Points: 17 AIS positions
  • Period: 2026-10-27T00:39:50+00:00 to 2026-10-27T06:51:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 372,
    "points_in_zone": 17,
    "first_point": {
        "ts": "2026-10-27T00:39:50+00:00",
        "lat": 37.161096700000001646913005970418453216552734375,
        "lon": -6.89915500000000037061909097246825695037841796875
    },
    "last_point": {
        "ts": "2026-10-27T06:51:49+00:00",
        "lat": 37.1611232999999998583007254637777805328369140625,
        "lon": -6.89914830000000023346728994511067867279052734375
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 27, 2026 00:39 UTC 75.0% ▼
  • Duration: 6h 12m
  • Radius: 5 meters
  • Data Points: 17 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 372,
    "points": 17,
    "centroid": {
        "lat": 37.16112038823530383524484932422637939453125,
        "lon": -6.8991620647058820026131797931157052516937255859375
    },
    "bbox": {
        "min_lat": 37.161079999999998335624695755541324615478515625,
        "min_lon": -6.899210000000000064801497501321136951446533203125,
        "max_lat": 37.16115169999999778838173369877040386199951171875,
        "max_lon": -6.89912830000000010244320947094820439815521240234375
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 23:03 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 24m
  • Data Points: 17 AIS positions
  • Period: 2026-10-26T23:45:49+00:00 to 2026-10-27T06:09:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 384,
    "points_in_zone": 17,
    "first_point": {
        "ts": "2026-10-26T23:45:49+00:00",
        "lat": 37.16109829999999902838681009598076343536376953125,
        "lon": -6.89914670000000018745822671917267143726348876953125
    },
    "last_point": {
        "ts": "2026-10-27T06:09:49+00:00",
        "lat": 37.1611400000000031695890356786549091339111328125,
        "lon": -6.8991749999999996134647517465054988861083984375
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 23:03 UTC 75.0% ▼
  • Duration: 6h 24m
  • Radius: 5 meters
  • Data Points: 17 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.5,
    "duration_minutes": 384,
    "points": 17,
    "centroid": {
        "lat": 37.1611189176470588790834881365299224853515625,
        "lon": -6.89916197058823588150744399172253906726837158203125
    },
    "bbox": {
        "min_lat": 37.161079999999998335624695755541324615478515625,
        "min_lon": -6.899210000000000064801497501321136951446533203125,
        "max_lat": 37.16115169999999778838173369877040386199951171875,
        "max_lon": -6.89912830000000010244320947094820439815521240234375
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Sts🛰️✗ Southern Öresund Surveillance Zone
Oct 26, 2026 22:45 UTC 75/100 ▼
Vessel A: IMO 9747106 (LIAN XI HU) HONG KONG
Vessel B: IMO 9686857 (STI COMANDANTE) Marshall Is
  • Minimum Distance: 288 meters
  • Average Distance: 291 meters
  • Duration: 1 hours
  • Period: 2026-10-26T22:45:49+00:00 to 2026-10-26T23:45:49+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Southern Öresund Surveillance Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (LIAN XI HU and STI COMANDANTE) maintained close proximity (min 288m, avg 290m) for 60 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern Öresund Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 288m, avg 290m
Duration15/25Duration 60 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Southern Öresund Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-10-27T01:00:11.668696+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 477021600,
        "imo": 9747106,
        "name": "LIAN XI HU",
        "flag": "HONG KONG"
    },
    "vessel_b": {
        "mmsi": 538005397,
        "imo": 9686857,
        "name": "STI COMANDANTE",
        "flag": "Marshall Is"
    },
    "min_distance_m": 288.3999999999999772626324556767940521240234375,
    "avg_distance_m": 290.5,
    "distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 60,
    "overlap_duration_s": 3600,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-10-26T22:45:49+00:00",
        "end": "2026-10-26T23:45:49+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 288m, avg 290m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 60 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Southern \u00d6resund Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (LIAN XI HU and STI COMANDANTE) maintained close proximity (min 288m, avg 290m) for 60 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern \u00d6resund Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 37.1603104000000001860826159827411174774169921875,
            "lon": -6.8978672999999997017539499211125075817108154296875
        },
        "time_window": {
            "start_ts": "2026-10-26T22:45:49+00:00",
            "end_ts": "2026-10-26T23:45:49+00:00"
        },
        "searched_at": "2026-10-27T01:00:11.668696+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 22:27 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 19 AIS positions
  • Period: 2026-10-26T22:27:49+00:00 to 2026-10-27T04:57:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 19,
    "first_point": {
        "ts": "2026-10-26T22:27:49+00:00",
        "lat": 37.16111829999999827123247087001800537109375,
        "lon": -6.8991433000000004227558747516013681888580322265625
    },
    "last_point": {
        "ts": "2026-10-27T04:57:49+00:00",
        "lat": 37.161141700000001719672582112252712249755859375,
        "lon": -6.8991533000000000441787051386199891567230224609375
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 22:27 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 5 meters
  • Data Points: 19 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.5,
    "duration_minutes": 390,
    "points": 19,
    "centroid": {
        "lat": 37.16111841578946695108243147842586040496826171875,
        "lon": -6.8991595684210533789837427320890128612518310546875
    },
    "bbox": {
        "min_lat": 37.161079999999998335624695755541324615478515625,
        "min_lon": -6.899210000000000064801497501321136951446533203125,
        "max_lat": 37.16115169999999778838173369877040386199951171875,
        "max_lon": -6.899126700000000056434146245010197162628173828125
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 21:21 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 17 AIS positions
  • Period: 2026-10-26T21:45:49+00:00 to 2026-10-27T04:15:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 17,
    "first_point": {
        "ts": "2026-10-26T21:45:49+00:00",
        "lat": 37.16111000000000075260686571709811687469482421875,
        "lon": -6.89917330000000017520278561278246343135833740234375
    },
    "last_point": {
        "ts": "2026-10-27T04:15:49+00:00",
        "lat": 37.16111000000000075260686571709811687469482421875,
        "lon": -6.89913829999999972386603985796682536602020263671875
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 21:21 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 5 meters
  • Data Points: 17 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.5,
    "duration_minutes": 390,
    "points": 17,
    "centroid": {
        "lat": 37.161114599999990559808793477714061737060546875,
        "lon": -6.899159223529412798825433128513395786285400390625
    },
    "bbox": {
        "min_lat": 37.161079999999998335624695755541324615478515625,
        "min_lon": -6.899210000000000064801497501321136951446533203125,
        "max_lat": 37.16114329999999910114638623781502246856689453125,
        "max_lon": -6.899126700000000056434146245010197162628173828125
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Sts Southern Öresund Surveillance Zone
Oct 26, 2026 21:14 UTC 80/100 ▼
Vessel A: IMO 9686857 (STI COMANDANTE) Marshall Is
Vessel B: IMO 9747106 (LIAN XI HU) HONG KONG
  • Minimum Distance: 285 meters
  • Average Distance: 289 meters
  • Duration: 1h 42m
  • Period: 2026-10-26T21:14:44+00:00 to 2026-10-26T22:56:46+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Southern Öresund Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (STI COMANDANTE and LIAN XI HU) maintained close proximity (min 285m, avg 289m) for 102 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern Öresund Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 285m, avg 289m
Duration20/25Duration 102 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±3m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538005397,
        "imo": 9686857,
        "name": "STI COMANDANTE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 477021600,
        "imo": 9747106,
        "name": "LIAN XI HU",
        "flag": "HONG KONG"
    },
    "min_distance_m": 285.1000000000000227373675443232059478759765625,
    "avg_distance_m": 289.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 2.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 102,
    "overlap_duration_s": 6122,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-10-26T21:14:44+00:00",
        "end": "2026-10-26T22:56:46+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 285m, avg 289m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 102 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Southern \u00d6resund Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (STI COMANDANTE and LIAN XI HU) maintained close proximity (min 285m, avg 289m) for 102 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern \u00d6resund Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 19:15 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 6m
  • Data Points: 15 AIS positions
  • Period: 2026-10-26T19:15:49+00:00 to 2026-10-27T01:21:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 366,
    "points_in_zone": 15,
    "first_point": {
        "ts": "2026-10-26T19:15:49+00:00",
        "lat": 37.16113169999999854553607292473316192626953125,
        "lon": -6.8991632999999996656015355256386101245880126953125
    },
    "last_point": {
        "ts": "2026-10-27T01:21:49+00:00",
        "lat": 37.161083300000001372609403915703296661376953125,
        "lon": -6.8991816999999997506165527738630771636962890625
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 19:15 UTC 75.0% ▼
  • Duration: 6h 6m
  • Radius: 4 meters
  • Data Points: 15 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 366,
    "points": 15,
    "centroid": {
        "lat": 37.1611156666666602177429012954235076904296875,
        "lon": -6.89915366666666596273671530070714652538299560546875
    },
    "bbox": {
        "min_lat": 37.161083300000001372609403915703296661376953125,
        "min_lon": -6.8991816999999997506165527738630771636962890625,
        "max_lat": 37.1611367000000001326043275184929370880126953125,
        "max_lon": -6.8991249999999997299937604111619293689727783203125
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 18:27 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 24m
  • Data Points: 16 AIS positions
  • Period: 2026-10-26T18:57:49+00:00 to 2026-10-27T01:21:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 384,
    "points_in_zone": 16,
    "first_point": {
        "ts": "2026-10-26T18:57:49+00:00",
        "lat": 37.16117669999999861829564906656742095947265625,
        "lon": -6.89916830000000036449137041927315294742584228515625
    },
    "last_point": {
        "ts": "2026-10-27T01:21:49+00:00",
        "lat": 37.161083300000001372609403915703296661376953125,
        "lon": -6.8991816999999997506165527738630771636962890625
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 18:27 UTC 75.0% ▼
  • Duration: 6h 24m
  • Radius: 7 meters
  • Data Points: 16 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 6.5,
    "duration_minutes": 384,
    "points": 16,
    "centroid": {
        "lat": 37.1611194812499974204911268316209316253662109375,
        "lon": -6.8991545812500003620471034082584083080291748046875
    },
    "bbox": {
        "min_lat": 37.161083300000001372609403915703296661376953125,
        "min_lon": -6.8991816999999997506165527738630771636962890625,
        "max_lat": 37.16117669999999861829564906656742095947265625,
        "max_lon": -6.8991249999999997299937604111619293689727783203125
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 17:33 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 12m
  • Data Points: 15 AIS positions
  • Period: 2026-10-26T17:33:49+00:00 to 2026-10-26T23:45:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 372,
    "points_in_zone": 15,
    "first_point": {
        "ts": "2026-10-26T17:33:49+00:00",
        "lat": 37.16111000000000075260686571709811687469482421875,
        "lon": -6.89916830000000036449137041927315294742584228515625
    },
    "last_point": {
        "ts": "2026-10-26T23:45:49+00:00",
        "lat": 37.16109829999999902838681009598076343536376953125,
        "lon": -6.89914670000000018745822671917267143726348876953125
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 17:33 UTC 75.0% ▼
  • Duration: 6h 12m
  • Radius: 6 meters
  • Data Points: 15 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 6.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 372,
    "points": 15,
    "centroid": {
        "lat": 37.16112033333333641849094419740140438079833984375,
        "lon": -6.89915543333333314279798287316225469112396240234375
    },
    "bbox": {
        "min_lat": 37.1610849999999999226929503493010997772216796875,
        "min_lon": -6.8992117000000003912418833351694047451019287109375,
        "max_lat": 37.16117669999999861829564906656742095947265625,
        "max_lon": -6.8991249999999997299937604111619293689727783203125
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 16:51 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 12m
  • Data Points: 15 AIS positions
  • Period: 2026-10-26T16:51:50+00:00 to 2026-10-26T23:03:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 372,
    "points_in_zone": 15,
    "first_point": {
        "ts": "2026-10-26T16:51:50+00:00",
        "lat": 37.16113500000000158252078108489513397216796875,
        "lon": -6.8991667000000003184823071933351457118988037109375
    },
    "last_point": {
        "ts": "2026-10-26T23:03:49+00:00",
        "lat": 37.1611266999999969584678183309733867645263671875,
        "lon": -6.899126700000000056434146245010197162628173828125
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 16:51 UTC 75.0% ▼
  • Duration: 6h 12m
  • Radius: 6 meters
  • Data Points: 15 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 6.0999999999999996447286321199499070644378662109375,
    "duration_minutes": 372,
    "points": 15,
    "centroid": {
        "lat": 37.16112277999999236044459394179284572601318359375,
        "lon": -6.8991567666666657743235191446729004383087158203125
    },
    "bbox": {
        "min_lat": 37.1610849999999999226929503493010997772216796875,
        "min_lon": -6.8992117000000003912418833351694047451019287109375,
        "max_lat": 37.16117669999999861829564906656742095947265625,
        "max_lon": -6.8991249999999997299937604111619293689727783203125
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 15:09 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 13 AIS positions
  • Period: 2026-10-26T15:51:49+00:00 to 2026-10-26T22:27:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 396,
    "points_in_zone": 13,
    "first_point": {
        "ts": "2026-10-26T15:51:49+00:00",
        "lat": 37.16111000000000075260686571709811687469482421875,
        "lon": -6.8991433000000004227558747516013681888580322265625
    },
    "last_point": {
        "ts": "2026-10-26T22:27:49+00:00",
        "lat": 37.16111829999999827123247087001800537109375,
        "lon": -6.8991433000000004227558747516013681888580322265625
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 15:09 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 6 meters
  • Data Points: 13 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 6.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 396,
    "points": 13,
    "centroid": {
        "lat": 37.16112051538461713562355726025998592376708984375,
        "lon": -6.8991565230769236194419136154465377330780029296875
    },
    "bbox": {
        "min_lat": 37.1610849999999999226929503493010997772216796875,
        "min_lon": -6.8992117000000003912418833351694047451019287109375,
        "max_lat": 37.16117669999999861829564906656742095947265625,
        "max_lon": -6.8991249999999997299937604111619293689727783203125
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Sts🛰️? Southern Öresund Surveillance Zone
Oct 26, 2026 15:02 UTC 65/100 ▼
Vessel A: IMO 9686857 (STI COMANDANTE) Marshall Is
Vessel B: IMO 9747106 (LIAN XI HU) HONG KONG
  • Minimum Distance: 283 meters
  • Average Distance: 285 meters
  • Duration: 42 minutes
  • Period: 2026-10-26T15:02:41+00:00 to 2026-10-26T15:44:42+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Southern Öresund Surveillance Zone

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (STI COMANDANTE and LIAN XI HU) maintained close proximity (min 283m, avg 285m) for 42 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern Öresund Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 283m, avg 285m
Duration5/25Duration 42 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Southern Öresund Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1C_IW_GRDH_1SDV_20261026T062636_20261026T062701_010052_0140FD_4057_COG • Acquired: 2026-10-26T06:26:36.380656Z • Platform: sentinel-1c
SAR satellite preview for event 1576585

Click image to view full size

Searched: 2026-10-26T16:15:07.355134+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538005397,
        "imo": 9686857,
        "name": "STI COMANDANTE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 477021600,
        "imo": 9747106,
        "name": "LIAN XI HU",
        "flag": "HONG KONG"
    },
    "min_distance_m": 282.6000000000000227373675443232059478759765625,
    "avg_distance_m": 285,
    "distance_consistency_m": 2.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 42,
    "overlap_duration_s": 2521,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-10-26T15:02:41+00:00",
        "end": "2026-10-26T15:44:42+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
    },
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 283m, avg 285m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 42 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Southern \u00d6resund Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (STI COMANDANTE and LIAN XI HU) maintained close proximity (min 283m, avg 285m) for 42 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern \u00d6resund Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 37.16029830000000089285094873048365116119384765625,
            "lon": -6.89786169999999998481143848039209842681884765625
        },
        "time_window": {
            "start_ts": "2026-10-26T15:02:41+00:00",
            "end_ts": "2026-10-26T15:44:42+00:00"
        },
        "searched_at": "2026-10-26T16:15:07.355134+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20261026T062636_20261026T062701_010052_0140FD_4057_COG",
        "scene_datetime": "2026-10-26T06:26:36.380656Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": -7.81801000000000012590817277668975293636322021484375,
            "min_lat": 35.4660300000000034970071283169090747833251953125,
            "max_lon": -4.56874800000000025335111786262132227420806884765625,
            "max_lat": 37.384624000000002297383616678416728973388671875
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/10\/event_1576585_thumbnail_20261026161512.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/10\/event_1576585_thumbnail_20261026161512.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 14:39 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 4h 36m
  • Data Points: 12 AIS positions
  • Period: 2026-10-26T14:39:49+00:00 to 2026-10-26T19:15:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 276,
    "points_in_zone": 12,
    "first_point": {
        "ts": "2026-10-26T14:39:49+00:00",
        "lat": 37.161141700000001719672582112252712249755859375,
        "lon": -6.89918329999999979662561599980108439922332763671875
    },
    "last_point": {
        "ts": "2026-10-26T19:15:49+00:00",
        "lat": 37.16113169999999854553607292473316192626953125,
        "lon": -6.8991632999999996656015355256386101245880126953125
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 14:39 UTC 75.0% ▼
  • Duration: 4h 36m
  • Radius: 7 meters
  • Data Points: 12 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 6.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 276,
    "points": 12,
    "centroid": {
        "lat": 37.16111764166667086328743607737123966217041015625,
        "lon": -6.899159850000000204772732104174792766571044921875
    },
    "bbox": {
        "min_lat": 37.1610782999999997855411493219435214996337890625,
        "min_lon": -6.8992117000000003912418833351694047451019287109375,
        "max_lat": 37.16117669999999861829564906656742095947265625,
        "max_lon": -6.89910170000000011469865057733841240406036376953125
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 12:27 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 24m
  • Data Points: 13 AIS positions
  • Period: 2026-10-26T12:51:49+00:00 to 2026-10-26T19:15:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 384,
    "points_in_zone": 13,
    "first_point": {
        "ts": "2026-10-26T12:51:49+00:00",
        "lat": 37.16114329999999910114638623781502246856689453125,
        "lon": -6.8991816999999997506165527738630771636962890625
    },
    "last_point": {
        "ts": "2026-10-26T19:15:49+00:00",
        "lat": 37.16113169999999854553607292473316192626953125,
        "lon": -6.8991632999999996656015355256386101245880126953125
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 12:27 UTC 75.0% ▼
  • Duration: 6h 24m
  • Radius: 6 meters
  • Data Points: 13 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 6.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 384,
    "points": 13,
    "centroid": {
        "lat": 37.16111961538461372356323408894240856170654296875,
        "lon": -6.899161530769230665782743017189204692840576171875
    },
    "bbox": {
        "min_lat": 37.1610782999999997855411493219435214996337890625,
        "min_lon": -6.8992117000000003912418833351694047451019287109375,
        "max_lat": 37.16117669999999861829564906656742095947265625,
        "max_lon": -6.89910170000000011469865057733841240406036376953125
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Sts🛰️? Southern Öresund Surveillance Zone
Oct 26, 2026 11:57 UTC 70/100 ▼
Vessel A: IMO 9747106 (LIAN XI HU) HONG KONG
Vessel B: IMO 9686857 (STI COMANDANTE) Marshall Is
  • Minimum Distance: 289 meters
  • Average Distance: 292 meters
  • Duration: 54 minutes
  • Period: 2026-10-26T11:57:49+00:00 to 2026-10-26T12:51:49+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Southern Öresund Surveillance Zone

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (LIAN XI HU and STI COMANDANTE) maintained close proximity (min 289m, avg 292m) for 54 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern Öresund Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 289m, avg 292m
Duration10/25Duration 54 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Southern Öresund Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1C_IW_GRDH_1SDV_20261026T062636_20261026T062701_010052_0140FD_4057_COG • Acquired: 2026-10-26T06:26:36.380656Z • Platform: sentinel-1c
SAR satellite preview for event 1576789

Click image to view full size

Searched: 2026-10-26T16:45:01.473499+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 477021600,
        "imo": 9747106,
        "name": "LIAN XI HU",
        "flag": "HONG KONG"
    },
    "vessel_b": {
        "mmsi": 538005397,
        "imo": 9686857,
        "name": "STI COMANDANTE",
        "flag": "Marshall Is"
    },
    "min_distance_m": 289.1000000000000227373675443232059478759765625,
    "avg_distance_m": 291.5,
    "distance_consistency_m": 2.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 54,
    "overlap_duration_s": 3240,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-10-26T11:57:49+00:00",
        "end": "2026-10-26T12:51:49+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
    },
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 289m, avg 292m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 54 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Southern \u00d6resund Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (LIAN XI HU and STI COMANDANTE) maintained close proximity (min 289m, avg 292m) for 54 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern \u00d6resund Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 37.160318300000000135696609504520893096923828125,
            "lon": -6.89787450000000035288394428789615631103515625
        },
        "time_window": {
            "start_ts": "2026-10-26T11:57:49+00:00",
            "end_ts": "2026-10-26T12:51:49+00:00"
        },
        "searched_at": "2026-10-26T16:45:01.473499+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20261026T062636_20261026T062701_010052_0140FD_4057_COG",
        "scene_datetime": "2026-10-26T06:26:36.380656Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": -7.81801000000000012590817277668975293636322021484375,
            "min_lat": 35.4660300000000034970071283169090747833251953125,
            "max_lon": -4.56874800000000025335111786262132227420806884765625,
            "max_lat": 37.384624000000002297383616678416728973388671875
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/10\/event_1576789_thumbnail_20261026164505.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/10\/event_1576789_thumbnail_20261026164505.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 11:57 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 12 AIS positions
  • Period: 2026-10-26T11:57:49+00:00 to 2026-10-26T18:27:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 12,
    "first_point": {
        "ts": "2026-10-26T11:57:49+00:00",
        "lat": 37.1611467000000033067408367060124874114990234375,
        "lon": -6.899171700000000129193722386844456195831298828125
    },
    "last_point": {
        "ts": "2026-10-26T18:27:49+00:00",
        "lat": 37.16113829999999751407813164405524730682373046875,
        "lon": -6.8992117000000003912418833351694047451019287109375
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 11:57 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 6 meters
  • Data Points: 12 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 5.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 390,
    "points": 12,
    "centroid": {
        "lat": 37.16111471666666687951874337159097194671630859375,
        "lon": -6.89916195000000076475998866953887045383453369140625
    },
    "bbox": {
        "min_lat": 37.1610782999999997855411493219435214996337890625,
        "min_lon": -6.8992117000000003912418833351694047451019287109375,
        "max_lat": 37.1611467000000033067408367060124874114990234375,
        "max_lon": -6.89910170000000011469865057733841240406036376953125
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 10:03 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 5h 48m
  • Data Points: 9 AIS positions
  • Period: 2026-10-26T10:03:49+00:00 to 2026-10-26T15:51:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 348,
    "points_in_zone": 9,
    "first_point": {
        "ts": "2026-10-26T10:03:49+00:00",
        "lat": 37.16111000000000075260686571709811687469482421875,
        "lon": -6.89914670000000018745822671917267143726348876953125
    },
    "last_point": {
        "ts": "2026-10-26T15:51:49+00:00",
        "lat": 37.16111000000000075260686571709811687469482421875,
        "lon": -6.8991433000000004227558747516013681888580322265625
    }
}
Methodology: 2026.01.18
Sts Southern Öresund Surveillance Zone
Oct 26, 2026 09:33 UTC 85/100 ▼
Vessel A: IMO 9747106 (LIAN XI HU) HONG KONG
Vessel B: IMO 9686857 (STI COMANDANTE) Marshall Is
  • Minimum Distance: 289 meters
  • Average Distance: 291 meters
  • Duration: 3h 18m
  • Period: 2026-10-26T09:33:49+00:00 to 2026-10-26T12:51:49+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Southern Öresund Surveillance Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (LIAN XI HU and STI COMANDANTE) maintained close proximity (min 289m, avg 291m) for 198 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern Öresund Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 289m, avg 291m
Duration25/25Duration 198 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 477021600,
        "imo": 9747106,
        "name": "LIAN XI HU",
        "flag": "HONG KONG"
    },
    "vessel_b": {
        "mmsi": 538005397,
        "imo": 9686857,
        "name": "STI COMANDANTE",
        "flag": "Marshall Is"
    },
    "min_distance_m": 289.1000000000000227373675443232059478759765625,
    "avg_distance_m": 290.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 1.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 198,
    "overlap_duration_s": 11880,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-10-26T09:33:49+00:00",
        "end": "2026-10-26T12:51:49+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 289m, avg 291m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 198 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Southern \u00d6resund Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (LIAN XI HU and STI COMANDANTE) maintained close proximity (min 289m, avg 291m) for 198 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern \u00d6resund Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 09:03 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 18m
  • Data Points: 10 AIS positions
  • Period: 2026-10-26T09:33:49+00:00 to 2026-10-26T15:51:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 378,
    "points_in_zone": 10,
    "first_point": {
        "ts": "2026-10-26T09:33:49+00:00",
        "lat": 37.16113169999999854553607292473316192626953125,
        "lon": -6.89915169999999999816964191268198192119598388671875
    },
    "last_point": {
        "ts": "2026-10-26T15:51:49+00:00",
        "lat": 37.16111000000000075260686571709811687469482421875,
        "lon": -6.8991433000000004227558747516013681888580322265625
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 09:03 UTC 75.0% ▼
  • Duration: 6h 18m
  • Radius: 6 meters
  • Data Points: 10 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 6.0999999999999996447286321199499070644378662109375,
    "duration_minutes": 378,
    "points": 10,
    "centroid": {
        "lat": 37.16111500000000233967512031085789203643798828125,
        "lon": -6.8991556800000015670093489461578428745269775390625
    },
    "bbox": {
        "min_lat": 37.1610782999999997855411493219435214996337890625,
        "min_lon": -6.89920669999999969235204844153486192226409912109375,
        "max_lat": 37.1611467000000033067408367060124874114990234375,
        "max_lon": -6.89910170000000011469865057733841240406036376953125
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 08:09 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 24m
  • Data Points: 11 AIS positions
  • Period: 2026-10-26T08:45:49+00:00 to 2026-10-26T15:09:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 384,
    "points_in_zone": 11,
    "first_point": {
        "ts": "2026-10-26T08:45:49+00:00",
        "lat": 37.16110669999999771562215755693614482879638671875,
        "lon": -6.89914670000000018745822671917267143726348876953125
    },
    "last_point": {
        "ts": "2026-10-26T15:09:49+00:00",
        "lat": 37.1610950000000030968294595368206501007080078125,
        "lon": -6.89912830000000010244320947094820439815521240234375
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 08:09 UTC 75.0% ▼
  • Duration: 6h 24m
  • Radius: 4 meters
  • Data Points: 11 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 384,
    "points": 11,
    "centroid": {
        "lat": 37.16112136363636153646439197473227977752685546875,
        "lon": -6.899161527272728022808223613537847995758056640625
    },
    "bbox": {
        "min_lat": 37.1610950000000030968294595368206501007080078125,
        "min_lon": -6.8991983000000001169382812804542481899261474609375,
        "max_lat": 37.1611467000000033067408367060124874114990234375,
        "max_lon": -6.89912830000000010244320947094820439815521240234375
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Sts🛰️? Southern Öresund Surveillance Zone
Oct 26, 2026 07:33 UTC 65/100 ▼
Vessel A: IMO 9747106 (LIAN XI HU) HONG KONG
Vessel B: IMO 9686857 (STI COMANDANTE) Marshall Is
  • Minimum Distance: 286 meters
  • Average Distance: 288 meters
  • Duration: 36 minutes
  • Period: 2026-10-26T07:33:49+00:00 to 2026-10-26T08:09:49+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Southern Öresund Surveillance Zone

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (LIAN XI HU and STI COMANDANTE) maintained close proximity (min 286m, avg 288m) for 36 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern Öresund Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 286m, avg 288m
Duration5/25Duration 36 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Southern Öresund Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1C_IW_GRDH_1SDV_20261026T062636_20261026T062701_010052_0140FD_4057_COG • Acquired: 2026-10-26T06:26:36.380656Z • Platform: sentinel-1c
SAR satellite preview for event 1574843

Click image to view full size

Searched: 2026-10-26T09:00:09.591068+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 477021600,
        "imo": 9747106,
        "name": "LIAN XI HU",
        "flag": "HONG KONG"
    },
    "vessel_b": {
        "mmsi": 538005397,
        "imo": 9686857,
        "name": "STI COMANDANTE",
        "flag": "Marshall Is"
    },
    "min_distance_m": 286.30000000000001136868377216160297393798828125,
    "avg_distance_m": 288.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 2.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 36,
    "overlap_duration_s": 2160,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-10-26T07:33:49+00:00",
        "end": "2026-10-26T08:09:49+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 286m, avg 288m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 36 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Southern \u00d6resund Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (LIAN XI HU and STI COMANDANTE) maintained close proximity (min 286m, avg 288m) for 36 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern \u00d6resund Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 37.16030769999999705532900406979024410247802734375,
            "lon": -6.89787749999999988403942552395164966583251953125
        },
        "time_window": {
            "start_ts": "2026-10-26T07:33:49+00:00",
            "end_ts": "2026-10-26T08:09:49+00:00"
        },
        "searched_at": "2026-10-26T09:00:09.591068+00:00",
        "scene_id": "S1C_IW_GRDH_1SDV_20261026T062636_20261026T062701_010052_0140FD_4057_COG",
        "scene_datetime": "2026-10-26T06:26:36.380656Z",
        "platform": "sentinel-1c",
        "bbox": {
            "min_lon": -7.81801000000000012590817277668975293636322021484375,
            "min_lat": 35.4660300000000034970071283169090747833251953125,
            "max_lon": -4.56874800000000025335111786262132227420806884765625,
            "max_lat": 37.384624000000002297383616678416728973388671875
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/10\/event_1574843_thumbnail_20261026090014.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/10\/event_1574843_thumbnail_20261026090014.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 07:03 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 5h 48m
  • Data Points: 16 AIS positions
  • Period: 2026-10-26T07:03:49+00:00 to 2026-10-26T12:51:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 348,
    "points_in_zone": 16,
    "first_point": {
        "ts": "2026-10-26T07:03:49+00:00",
        "lat": 37.16110830000000220252331928350031375885009765625,
        "lon": -6.89912330000000029173179427743889391422271728515625
    },
    "last_point": {
        "ts": "2026-10-26T12:51:49+00:00",
        "lat": 37.16114329999999910114638623781502246856689453125,
        "lon": -6.8991816999999997506165527738630771636962890625
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 07:03 UTC 75.0% ▼
  • Duration: 5h 48m
  • Radius: 4 meters
  • Data Points: 16 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.0999999999999996447286321199499070644378662109375,
    "duration_minutes": 348,
    "points": 16,
    "centroid": {
        "lat": 37.1611214562500009606083040125668048858642578125,
        "lon": -6.89915344375000127996599985635839402675628662109375
    },
    "bbox": {
        "min_lat": 37.16109829999999902838681009598076343536376953125,
        "min_lon": -6.8991983000000001169382812804542481899261474609375,
        "max_lat": 37.1611467000000033067408367060124874114990234375,
        "max_lon": -6.89912330000000029173179427743889391422271728515625
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Sts Southern Öresund Surveillance Zone
Oct 26, 2026 06:56 UTC 75/100 ▼
Vessel A: IMO 9686857 (STI COMANDANTE) Marshall Is
Vessel B: IMO 9747106 (LIAN XI HU) HONG KONG
  • Minimum Distance: 285 meters
  • Average Distance: 288 meters
  • Duration: 1h 12m
  • Period: 2026-10-26T06:56:41+00:00 to 2026-10-26T08:08:39+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Southern Öresund Surveillance Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (STI COMANDANTE and LIAN XI HU) maintained close proximity (min 285m, avg 288m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern Öresund Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 285m, avg 288m
Duration15/25Duration 72 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538005397,
        "imo": 9686857,
        "name": "STI COMANDANTE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 477021600,
        "imo": 9747106,
        "name": "LIAN XI HU",
        "flag": "HONG KONG"
    },
    "min_distance_m": 285.30000000000001136868377216160297393798828125,
    "avg_distance_m": 288,
    "distance_consistency_m": 2.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 72,
    "overlap_duration_s": 4318,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-10-26T06:56:41+00:00",
        "end": "2026-10-26T08:08:39+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 285m, avg 288m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 72 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Southern \u00d6resund Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (STI COMANDANTE and LIAN XI HU) maintained close proximity (min 285m, avg 288m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern \u00d6resund Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 06:03 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 18 AIS positions
  • Period: 2026-10-26T06:21:49+00:00 to 2026-10-26T12:51:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 18,
    "first_point": {
        "ts": "2026-10-26T06:21:49+00:00",
        "lat": 37.16109000000000150976120494306087493896484375,
        "lon": -6.89915169999999999816964191268198192119598388671875
    },
    "last_point": {
        "ts": "2026-10-26T12:51:49+00:00",
        "lat": 37.16114329999999910114638623781502246856689453125,
        "lon": -6.8991816999999997506165527738630771636962890625
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 06:03 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 4 meters
  • Data Points: 18 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 390,
    "points": 18,
    "centroid": {
        "lat": 37.1611200888888930649045505560934543609619140625,
        "lon": -6.8991550999999997628719938802532851696014404296875
    },
    "bbox": {
        "min_lat": 37.16109000000000150976120494306087493896484375,
        "min_lon": -6.8991983000000001169382812804542481899261474609375,
        "max_lat": 37.1611467000000033067408367060124874114990234375,
        "max_lon": -6.89912330000000029173179427743889391422271728515625
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Sts Southern Öresund Surveillance Zone
Oct 26, 2026 05:44 UTC 85/100 ▼
Vessel A: IMO 9747106 (LIAN XI HU) HONG KONG
Vessel B: IMO 9686857 (STI COMANDANTE) Marshall Is
  • Minimum Distance: 287 meters
  • Average Distance: 292 meters
  • Duration: 2h 12m
  • Period: 2026-10-26T05:03:49+00:00 to 2026-10-26T07:15:49+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Southern Öresund Surveillance Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (LIAN XI HU and STI COMANDANTE) maintained close proximity (min 287m, avg 292m) for 132 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern Öresund Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 287m, avg 292m
Duration25/25Duration 132 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±4m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 477021600,
        "imo": 9747106,
        "name": "LIAN XI HU",
        "flag": "HONG KONG"
    },
    "vessel_b": {
        "mmsi": 538005397,
        "imo": 9686857,
        "name": "STI COMANDANTE",
        "flag": "Marshall Is"
    },
    "min_distance_m": 286.6000000000000227373675443232059478759765625,
    "avg_distance_m": 291.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 3.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 132,
    "overlap_duration_s": 7920,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-10-26T05:03:49+00:00",
        "end": "2026-10-26T07:15:49+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 287m, avg 292m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 132 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Southern \u00d6resund Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (LIAN XI HU and STI COMANDANTE) maintained close proximity (min 287m, avg 292m) for 132 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern \u00d6resund Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 05:03 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 20 AIS positions
  • Period: 2026-10-26T05:57:49+00:00 to 2026-10-26T12:27:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-10-26T05:57:49+00:00",
        "lat": 37.16110830000000220252331928350031375885009765625,
        "lon": -6.8991667000000003184823071933351457118988037109375
    },
    "last_point": {
        "ts": "2026-10-26T12:27:49+00:00",
        "lat": 37.16109829999999902838681009598076343536376953125,
        "lon": -6.89914170000000037674681152566336095333099365234375
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 05:03 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 4 meters
  • Data Points: 20 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 390,
    "points": 20,
    "centroid": {
        "lat": 37.1611195800000047029243432916700839996337890625,
        "lon": -6.89915542500000089631839728099294006824493408203125
    },
    "bbox": {
        "min_lat": 37.16109000000000150976120494306087493896484375,
        "min_lon": -6.8991983000000001169382812804542481899261474609375,
        "max_lat": 37.1611467000000033067408367060124874114990234375,
        "max_lon": -6.89912330000000029173179427743889391422271728515625
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Sts Southern Öresund Surveillance Zone
Oct 26, 2026 04:32 UTC 85/100 ▼
Vessel A: IMO 9747106 (LIAN XI HU) HONG KONG
Vessel B: IMO 9686857 (STI COMANDANTE) Marshall Is
  • Minimum Distance: 287 meters
  • Average Distance: 292 meters
  • Duration: 2h 42m
  • Period: 2026-10-26T04:33:49+00:00 to 2026-10-26T07:15:49+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Southern Öresund Surveillance Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (LIAN XI HU and STI COMANDANTE) maintained close proximity (min 287m, avg 292m) for 162 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern Öresund Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 287m, avg 292m
Duration25/25Duration 162 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±3m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 477021600,
        "imo": 9747106,
        "name": "LIAN XI HU",
        "flag": "HONG KONG"
    },
    "vessel_b": {
        "mmsi": 538005397,
        "imo": 9686857,
        "name": "STI COMANDANTE",
        "flag": "Marshall Is"
    },
    "min_distance_m": 286.6000000000000227373675443232059478759765625,
    "avg_distance_m": 292.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 3.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 162,
    "overlap_duration_s": 9720,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-10-26T04:33:49+00:00",
        "end": "2026-10-26T07:15:49+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 287m, avg 292m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 162 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Southern \u00d6resund Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (LIAN XI HU and STI COMANDANTE) maintained close proximity (min 287m, avg 292m) for 162 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern \u00d6resund Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 04:21 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 5h 42m
  • Data Points: 25 AIS positions
  • Period: 2026-10-26T04:21:49+00:00 to 2026-10-26T10:03:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 342,
    "points_in_zone": 25,
    "first_point": {
        "ts": "2026-10-26T04:21:49+00:00",
        "lat": 37.1611333000000030324372346512973308563232421875,
        "lon": -6.8991600000000001813305061659775674343109130859375
    },
    "last_point": {
        "ts": "2026-10-26T10:03:49+00:00",
        "lat": 37.16111000000000075260686571709811687469482421875,
        "lon": -6.89914670000000018745822671917267143726348876953125
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 04:21 UTC 75.0% ▼
  • Duration: 5h 42m
  • Radius: 4 meters
  • Data Points: 25 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4,
    "duration_minutes": 342,
    "points": 25,
    "centroid": {
        "lat": 37.16112166399999949817356537096202373504638671875,
        "lon": -6.8991545319999989516190908034332096576690673828125
    },
    "bbox": {
        "min_lat": 37.1610883000000029596776585094630718231201171875,
        "min_lon": -6.8991983000000001169382812804542481899261474609375,
        "max_lat": 37.16114999999999923829818726517260074615478515625,
        "max_lon": -6.89912330000000029173179427743889391422271728515625
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 03:09 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 6m
  • Data Points: 26 AIS positions
  • Period: 2026-10-26T03:57:49+00:00 to 2026-10-26T10:03:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 366,
    "points_in_zone": 26,
    "first_point": {
        "ts": "2026-10-26T03:57:49+00:00",
        "lat": 37.16111829999999827123247087001800537109375,
        "lon": -6.8991766999999999399051375803537666797637939453125
    },
    "last_point": {
        "ts": "2026-10-26T10:03:49+00:00",
        "lat": 37.16111000000000075260686571709811687469482421875,
        "lon": -6.89914670000000018745822671917267143726348876953125
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 03:09 UTC 75.0% ▼
  • Duration: 6h 6m
  • Radius: 4 meters
  • Data Points: 26 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 366,
    "points": 26,
    "centroid": {
        "lat": 37.1611215346153898053671582601964473724365234375,
        "lon": -6.89915538461538435655029388726688921451568603515625
    },
    "bbox": {
        "min_lat": 37.1610883000000029596776585094630718231201171875,
        "min_lon": -6.8991983000000001169382812804542481899261474609375,
        "max_lat": 37.16114999999999923829818726517260074615478515625,
        "max_lon": -6.89912330000000029173179427743889391422271728515625
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Sts Southern Öresund Surveillance Zone
Oct 26, 2026 03:02 UTC 70/100 ▼
Vessel A: IMO 9686857 (STI COMANDANTE) Marshall Is
Vessel B: IMO 9747106 (LIAN XI HU) HONG KONG
  • Minimum Distance: 287 meters
  • Average Distance: 289 meters
  • Duration: 59 minutes
  • Period: 2026-10-26T03:02:41+00:00 to 2026-10-26T04:02:36+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Southern Öresund Surveillance Zone

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (STI COMANDANTE and LIAN XI HU) maintained close proximity (min 287m, avg 289m) for 60 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern Öresund Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 287m, avg 289m
Duration10/25Duration 60 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538005397,
        "imo": 9686857,
        "name": "STI COMANDANTE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 477021600,
        "imo": 9747106,
        "name": "LIAN XI HU",
        "flag": "HONG KONG"
    },
    "min_distance_m": 287.19999999999998863131622783839702606201171875,
    "avg_distance_m": 289.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 1.1999999999999999555910790149937383830547332763671875,
    "duration_minutes": 59.89999999999999857891452847979962825775146484375,
    "overlap_duration_s": 3595,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-10-26T03:02:41+00:00",
        "end": "2026-10-26T04:02:36+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 287m, avg 289m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 60 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Southern \u00d6resund Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (STI COMANDANTE and LIAN XI HU) maintained close proximity (min 287m, avg 289m) for 60 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern \u00d6resund Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 02:09 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 28 AIS positions
  • Period: 2026-10-26T02:33:49+00:00 to 2026-10-26T09:09:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 396,
    "points_in_zone": 28,
    "first_point": {
        "ts": "2026-10-26T02:33:49+00:00",
        "lat": 37.16111169999999930269041215069591999053955078125,
        "lon": -6.89910669999999992541006577084772288799285888671875
    },
    "last_point": {
        "ts": "2026-10-26T09:09:49+00:00",
        "lat": 37.16110499999999916553861112333834171295166015625,
        "lon": -6.89914670000000018745822671917267143726348876953125
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 02:09 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 5 meters
  • Data Points: 28 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.5,
    "duration_minutes": 396,
    "points": 28,
    "centroid": {
        "lat": 37.1611193392857188655398203991353511810302734375,
        "lon": -6.89915297499999979891072143800556659698486328125
    },
    "bbox": {
        "min_lat": 37.1610883000000029596776585094630718231201171875,
        "min_lon": -6.8991983000000001169382812804542481899261474609375,
        "max_lat": 37.16114999999999923829818726517260074615478515625,
        "max_lon": -6.89910499999999959896967993699945509433746337890625
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Sts Southern Öresund Surveillance Zone
Oct 26, 2026 01:26 UTC 65/100 ▼
Vessel A: IMO 9747106 (LIAN XI HU) HONG KONG
Vessel B: IMO 9686857 (STI COMANDANTE) Marshall Is
  • Minimum Distance: 288 meters
  • Average Distance: 290 meters
  • Duration: 30 minutes
  • Period: 2026-10-26T01:51:49+00:00 to 2026-10-26T02:21:49+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Southern Öresund Surveillance Zone

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (LIAN XI HU and STI COMANDANTE) maintained close proximity (min 288m, avg 290m) for 30 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern Öresund Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 288m, avg 290m
Duration5/25Duration 30 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 477021600,
        "imo": 9747106,
        "name": "LIAN XI HU",
        "flag": "HONG KONG"
    },
    "vessel_b": {
        "mmsi": 538005397,
        "imo": 9686857,
        "name": "STI COMANDANTE",
        "flag": "Marshall Is"
    },
    "min_distance_m": 287.8999999999999772626324556767940521240234375,
    "avg_distance_m": 290.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 1.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 30,
    "overlap_duration_s": 1800,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-10-26T01:51:49+00:00",
        "end": "2026-10-26T02:21:49+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 288m, avg 290m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 30 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Southern \u00d6resund Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (LIAN XI HU and STI COMANDANTE) maintained close proximity (min 288m, avg 290m) for 30 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern \u00d6resund Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 01:03 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 31 AIS positions
  • Period: 2026-10-26T01:33:50+00:00 to 2026-10-26T08:09:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 396,
    "points_in_zone": 31,
    "first_point": {
        "ts": "2026-10-26T01:33:50+00:00",
        "lat": 37.16111670000000088975866674445569515228271484375,
        "lon": -6.8991316999999998671455614385195076465606689453125
    },
    "last_point": {
        "ts": "2026-10-26T08:09:49+00:00",
        "lat": 37.16111670000000088975866674445569515228271484375,
        "lon": -6.89914170000000037674681152566336095333099365234375
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 01:03 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 4 meters
  • Data Points: 31 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 396,
    "points": 31,
    "centroid": {
        "lat": 37.16112042580646601663829642347991466522216796875,
        "lon": -6.899151661290321868591490783728659152984619140625
    },
    "bbox": {
        "min_lat": 37.1610883000000029596776585094630718231201171875,
        "min_lon": -6.89918500000000012306600183364935219287872314453125,
        "max_lat": 37.16114999999999923829818726517260074615478515625,
        "max_lon": -6.89910499999999959896967993699945509433746337890625
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Sts Southern Öresund Surveillance Zone
Oct 26, 2026 00:26 UTC 80/100 ▼
Vessel A: IMO 9747106 (LIAN XI HU) HONG KONG
Vessel B: IMO 9686857 (STI COMANDANTE) Marshall Is
  • Minimum Distance: 287 meters
  • Average Distance: 289 meters
  • Duration: 1h 54m
  • Period: 2026-10-26T00:27:49+00:00 to 2026-10-26T02:21:49+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Southern Öresund Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (LIAN XI HU and STI COMANDANTE) maintained close proximity (min 286m, avg 289m) for 114 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern Öresund Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 286m, avg 289m
Duration20/25Duration 114 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 477021600,
        "imo": 9747106,
        "name": "LIAN XI HU",
        "flag": "HONG KONG"
    },
    "vessel_b": {
        "mmsi": 538005397,
        "imo": 9686857,
        "name": "STI COMANDANTE",
        "flag": "Marshall Is"
    },
    "min_distance_m": 286.5,
    "avg_distance_m": 289.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 1.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 114,
    "overlap_duration_s": 6840,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-10-26T00:27:49+00:00",
        "end": "2026-10-26T02:21:49+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 286m, avg 289m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 114 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Southern \u00d6resund Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (LIAN XI HU and STI COMANDANTE) maintained close proximity (min 286m, avg 289m) for 114 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern \u00d6resund Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 26, 2026 00:15 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 30 AIS positions
  • Period: 2026-10-26T00:51:49+00:00 to 2026-10-26T07:27:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 396,
    "points_in_zone": 30,
    "first_point": {
        "ts": "2026-10-26T00:51:49+00:00",
        "lat": 37.1611333000000030324372346512973308563232421875,
        "lon": -6.8991600000000001813305061659775674343109130859375
    },
    "last_point": {
        "ts": "2026-10-26T07:27:49+00:00",
        "lat": 37.16113169999999854553607292473316192626953125,
        "lon": -6.8991533000000000441787051386199891567230224609375
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 26, 2026 00:15 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 5 meters
  • Data Points: 30 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.5,
    "duration_minutes": 396,
    "points": 30,
    "centroid": {
        "lat": 37.161121603333327811924391426146030426025390625,
        "lon": -6.8991532166666669212418128154240548610687255859375
    },
    "bbox": {
        "min_lat": 37.1610883000000029596776585094630718231201171875,
        "min_lon": -6.89918500000000012306600183364935219287872314453125,
        "max_lat": 37.16114999999999923829818726517260074615478515625,
        "max_lon": -6.89910499999999959896967993699945509433746337890625
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Sts Southern Öresund Surveillance Zone
Oct 25, 2026 23:14 UTC 79/100 ▼
Vessel A: IMO 9747106 (LIAN XI HU) HONG KONG
Vessel B: IMO 9686857 (STI COMANDANTE) Marshall Is
  • Minimum Distance: 247 meters
  • Average Distance: 294 meters
  • Duration: 3h 12m
  • Period: 2026-10-25T23:09:49+00:00 to 2026-10-26T02:21:49+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.2 knots
  • Zone: Southern Öresund Surveillance Zone

Confidence Analysis

Score: 79/100

Moderate-confidence STS candidate. Two tankers (LIAN XI HU and STI COMANDANTE) maintained close proximity (min 247m, avg 294m) for 192 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern Öresund Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness15/25Min distance 247m, avg 294m
Duration25/25Duration 192 minutes
Speed Stability17/20both nearly stationary; stable speeds
Distance Consistency12/15Distance variance ±34m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 477021600,
        "imo": 9747106,
        "name": "LIAN XI HU",
        "flag": "HONG KONG"
    },
    "vessel_b": {
        "mmsi": 538005397,
        "imo": 9686857,
        "name": "STI COMANDANTE",
        "flag": "Marshall Is"
    },
    "min_distance_m": 247,
    "avg_distance_m": 294.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 34.10000000000000142108547152020037174224853515625,
    "duration_minutes": 192,
    "overlap_duration_s": 11520,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_avg": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_b_std": 0.5,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.1700000000000000122124532708767219446599483489990234375,
            "max_sog": 1.6999999999999999555910790149937383830547332763671875
        }
    },
    "time_window": {
        "start": "2026-10-25T23:09:49+00:00",
        "end": "2026-10-26T02:21:49+00:00"
    },
    "points_count": {
        "vessel_a": 18,
        "vessel_b": 18
    },
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "score": {
        "value": 79,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 247m, avg 294m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 192 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b134m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Southern \u00d6resund Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (LIAN XI HU and STI COMANDANTE) maintained close proximity (min 247m, avg 294m) for 192 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Southern \u00d6resund Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 25, 2026 23:09 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 31 AIS positions
  • Period: 2026-10-25T23:51:49+00:00 to 2026-10-26T06:21:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 31,
    "first_point": {
        "ts": "2026-10-25T23:51:49+00:00",
        "lat": 37.1611199999999968213160173036158084869384765625,
        "lon": -6.89915669999999980888105710619129240512847900390625
    },
    "last_point": {
        "ts": "2026-10-26T06:21:49+00:00",
        "lat": 37.16109000000000150976120494306087493896484375,
        "lon": -6.89915169999999999816964191268198192119598388671875
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 25, 2026 23:09 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 7 meters
  • Data Points: 31 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 6.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 390,
    "points": 31,
    "centroid": {
        "lat": 37.1611174645161241869573132134974002838134765625,
        "lon": -6.899155051612904543389959144406020641326904296875
    },
    "bbox": {
        "min_lat": 37.16106500000000067984728957526385784149169921875,
        "min_lon": -6.89919330000000030622686608694493770599365234375,
        "max_lat": 37.16114999999999923829818726517260074615478515625,
        "max_lon": -6.89910499999999959896967993699945509433746337890625
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 25, 2026 22:45 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 18m
  • Data Points: 31 AIS positions
  • Period: 2026-10-25T22:45:49+00:00 to 2026-10-26T05:03:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 378,
    "points_in_zone": 31,
    "first_point": {
        "ts": "2026-10-25T22:45:49+00:00",
        "lat": 37.16110330000000061545506468974053859710693359375,
        "lon": -6.8991433000000004227558747516013681888580322265625
    },
    "last_point": {
        "ts": "2026-10-26T05:03:49+00:00",
        "lat": 37.16114999999999923829818726517260074615478515625,
        "lon": -6.8991749999999996134647517465054988861083984375
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 25, 2026 22:45 UTC 75.0% ▼
  • Duration: 6h 18m
  • Radius: 7 meters
  • Data Points: 31 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 6.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 378,
    "points": 31,
    "centroid": {
        "lat": 37.16111730322580086749439942650496959686279296875,
        "lon": -6.8991527354838719787721856846474111080169677734375
    },
    "bbox": {
        "min_lat": 37.16106500000000067984728957526385784149169921875,
        "min_lon": -6.89919330000000030622686608694493770599365234375,
        "max_lat": 37.16114999999999923829818726517260074615478515625,
        "max_lon": -6.89910499999999959896967993699945509433746337890625
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 25, 2026 21:03 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 27 AIS positions
  • Period: 2026-10-25T21:51:49+00:00 to 2026-10-26T04:21:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 27,
    "first_point": {
        "ts": "2026-10-25T21:51:49+00:00",
        "lat": 37.161124999999998408384271897375583648681640625,
        "lon": -6.89918500000000012306600183364935219287872314453125
    },
    "last_point": {
        "ts": "2026-10-26T04:21:49+00:00",
        "lat": 37.1611333000000030324372346512973308563232421875,
        "lon": -6.8991600000000001813305061659775674343109130859375
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 25, 2026 21:03 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 7 meters
  • Data Points: 27 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 6.5,
    "duration_minutes": 390,
    "points": 27,
    "centroid": {
        "lat": 37.1611143703703561413931311108171939849853515625,
        "lon": -6.899154070370368430076268850825726985931396484375
    },
    "bbox": {
        "min_lat": 37.16106500000000067984728957526385784149169921875,
        "min_lon": -6.89919330000000030622686608694493770599365234375,
        "max_lat": 37.1611333000000030324372346512973308563232421875,
        "max_lon": -6.89910499999999959896967993699945509433746337890625
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 25, 2026 20:09 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 28 AIS positions
  • Period: 2026-10-25T20:51:49+00:00 to 2026-10-26T03:27:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 396,
    "points_in_zone": 28,
    "first_point": {
        "ts": "2026-10-25T20:51:49+00:00",
        "lat": 37.16110830000000220252331928350031375885009765625,
        "lon": -6.89913500000000023959501049830578267574310302734375
    },
    "last_point": {
        "ts": "2026-10-26T03:27:49+00:00",
        "lat": 37.1610883000000029596776585094630718231201171875,
        "lon": -6.89914999999999967172925607883371412754058837890625
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 25, 2026 20:09 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 7 meters
  • Data Points: 28 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 6.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 396,
    "points": 28,
    "centroid": {
        "lat": 37.1611151107142774208114133216440677642822265625,
        "lon": -6.89915582857142783979043088038451969623565673828125
    },
    "bbox": {
        "min_lat": 37.16106500000000067984728957526385784149169921875,
        "min_lon": -6.8992082999999997383611116674728691577911376953125,
        "max_lat": 37.16115669999999937544998829253017902374267578125,
        "max_lon": -6.89910499999999959896967993699945509433746337890625
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 25, 2026 19:15 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 27 AIS positions
  • Period: 2026-10-25T19:33:49+00:00 to 2026-10-26T02:09:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 396,
    "points_in_zone": 27,
    "first_point": {
        "ts": "2026-10-25T19:33:49+00:00",
        "lat": 37.1611333000000030324372346512973308563232421875,
        "lon": -6.8991366999999996778569766320288181304931640625
    },
    "last_point": {
        "ts": "2026-10-26T02:09:49+00:00",
        "lat": 37.16112170000000247682692133821547031402587890625,
        "lon": -6.8991433000000004227558747516013681888580322265625
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 25, 2026 19:15 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 7 meters
  • Data Points: 27 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 6.5,
    "duration_minutes": 396,
    "points": 27,
    "centroid": {
        "lat": 37.16111628888888418487113085575401782989501953125,
        "lon": -6.89915826666666642807967946282587945461273193359375
    },
    "bbox": {
        "min_lat": 37.16106500000000067984728957526385784149169921875,
        "min_lon": -6.89921330000000043725094656110741198062896728515625,
        "max_lat": 37.16115669999999937544998829253017902374267578125,
        "max_lon": -6.8991316999999998671455614385195076465606689453125
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 25, 2026 18:03 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 18m
  • Data Points: 26 AIS positions
  • Period: 2026-10-25T18:45:49+00:00 to 2026-10-26T01:03:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 378,
    "points_in_zone": 26,
    "first_point": {
        "ts": "2026-10-25T18:45:49+00:00",
        "lat": 37.161124999999998408384271897375583648681640625,
        "lon": -6.89914170000000037674681152566336095333099365234375
    },
    "last_point": {
        "ts": "2026-10-26T01:03:49+00:00",
        "lat": 37.161128300000001445368980057537555694580078125,
        "lon": -6.89917829999999998591420080629177391529083251953125
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 25, 2026 18:03 UTC 75.0% ▼
  • Duration: 6h 18m
  • Radius: 6 meters
  • Data Points: 26 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 6.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 378,
    "points": 26,
    "centroid": {
        "lat": 37.1611164653846088867794605903327465057373046875,
        "lon": -6.89915999615384567533737936173565685749053955078125
    },
    "bbox": {
        "min_lat": 37.16106500000000067984728957526385784149169921875,
        "min_lon": -6.89921330000000043725094656110741198062896728515625,
        "max_lat": 37.16115669999999937544998829253017902374267578125,
        "max_lon": -6.89913500000000023959501049830578267574310302734375
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 25, 2026 17:09 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 26 AIS positions
  • Period: 2026-10-25T17:51:49+00:00 to 2026-10-26T00:27:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 396,
    "points_in_zone": 26,
    "first_point": {
        "ts": "2026-10-25T17:51:49+00:00",
        "lat": 37.16111000000000075260686571709811687469482421875,
        "lon": -6.89915669999999980888105710619129240512847900390625
    },
    "last_point": {
        "ts": "2026-10-26T00:27:49+00:00",
        "lat": 37.1610883000000029596776585094630718231201171875,
        "lon": -6.89914999999999967172925607883371412754058837890625
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 25, 2026 17:09 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 30 meters
  • Data Points: 26 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 30,
    "duration_minutes": 396,
    "points": 26,
    "centroid": {
        "lat": 37.161127561538449981526355259120464324951171875,
        "lon": -6.89915704999999856994463698356412351131439208984375
    },
    "bbox": {
        "min_lat": 37.1610749999999967485564411617815494537353515625,
        "min_lon": -6.89921330000000043725094656110741198062896728515625,
        "max_lat": 37.161394999999998844941728748381137847900390625,
        "max_lon": -6.89911169999999973612148096435703337192535400390625
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 25, 2026 16:03 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 24 AIS positions
  • Period: 2026-10-25T16:51:49+00:00 to 2026-10-25T23:21:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 24,
    "first_point": {
        "ts": "2026-10-25T16:51:49+00:00",
        "lat": 37.16113829999999751407813164405524730682373046875,
        "lon": -6.8991667000000003184823071933351457118988037109375
    },
    "last_point": {
        "ts": "2026-10-25T23:21:49+00:00",
        "lat": 37.16109329999999744131855550222098827362060546875,
        "lon": -6.8991433000000004227558747516013681888580322265625
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 25, 2026 16:03 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 30 meters
  • Data Points: 24 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 29.5,
    "duration_minutes": 390,
    "points": 24,
    "centroid": {
        "lat": 37.161131874999995261532603763043880462646484375,
        "lon": -6.899160204166665977254524477757513523101806640625
    },
    "bbox": {
        "min_lat": 37.1610749999999967485564411617815494537353515625,
        "min_lon": -6.89921330000000043725094656110741198062896728515625,
        "max_lat": 37.161394999999998844941728748381137847900390625,
        "max_lon": -6.89911169999999973612148096435703337192535400390625
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 25, 2026 15:21 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 27 AIS positions
  • Period: 2026-10-25T15:21:49+00:00 to 2026-10-25T21:51:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 27,
    "first_point": {
        "ts": "2026-10-25T15:21:49+00:00",
        "lat": 37.16110830000000220252331928350031375885009765625,
        "lon": -6.89915169999999999816964191268198192119598388671875
    },
    "last_point": {
        "ts": "2026-10-25T21:51:49+00:00",
        "lat": 37.161124999999998408384271897375583648681640625,
        "lon": -6.89918500000000012306600183364935219287872314453125
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 25, 2026 15:21 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 30 meters
  • Data Points: 27 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 29.60000000000000142108547152020037174224853515625,
    "duration_minutes": 390,
    "points": 27,
    "centroid": {
        "lat": 37.16113092962962838328166981227695941925048828125,
        "lon": -6.89916172962963170078865005052648484706878662109375
    },
    "bbox": {
        "min_lat": 37.1610749999999967485564411617815494537353515625,
        "min_lon": -6.89921330000000043725094656110741198062896728515625,
        "max_lat": 37.161394999999998844941728748381137847900390625,
        "max_lon": -6.89911169999999973612148096435703337192535400390625
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 25, 2026 14:09 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 18m
  • Data Points: 27 AIS positions
  • Period: 2026-10-25T14:57:49+00:00 to 2026-10-25T21:15:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 378,
    "points_in_zone": 27,
    "first_point": {
        "ts": "2026-10-25T14:57:49+00:00",
        "lat": 37.161128300000001445368980057537555694580078125,
        "lon": -6.89912830000000010244320947094820439815521240234375
    },
    "last_point": {
        "ts": "2026-10-25T21:15:49+00:00",
        "lat": 37.16115669999999937544998829253017902374267578125,
        "lon": -6.8992082999999997383611116674728691577911376953125
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 25, 2026 14:09 UTC 75.0% ▼
  • Duration: 6h 18m
  • Radius: 30 meters
  • Data Points: 27 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 29.60000000000000142108547152020037174224853515625,
    "duration_minutes": 378,
    "points": 27,
    "centroid": {
        "lat": 37.16113105185184650736118783243000507354736328125,
        "lon": -6.89915962962963025262297378503717482089996337890625
    },
    "bbox": {
        "min_lat": 37.1610749999999967485564411617815494537353515625,
        "min_lon": -6.89921330000000043725094656110741198062896728515625,
        "max_lat": 37.161394999999998844941728748381137847900390625,
        "max_lon": -6.89911169999999973612148096435703337192535400390625
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 25, 2026 13:09 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 27 AIS positions
  • Period: 2026-10-25T13:39:49+00:00 to 2026-10-25T20:09:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 27,
    "first_point": {
        "ts": "2026-10-25T13:39:49+00:00",
        "lat": 37.16111829999999827123247087001800537109375,
        "lon": -6.89918000000000031235458664014004170894622802734375
    },
    "last_point": {
        "ts": "2026-10-25T20:09:49+00:00",
        "lat": 37.16111000000000075260686571709811687469482421875,
        "lon": -6.89914830000000023346728994511067867279052734375
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 25, 2026 13:09 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 30 meters
  • Data Points: 27 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 29.5,
    "duration_minutes": 390,
    "points": 27,
    "centroid": {
        "lat": 37.16113154444443722468349733389914035797119140625,
        "lon": -6.89915592222222340268444895627908408641815185546875
    },
    "bbox": {
        "min_lat": 37.1610849999999999226929503493010997772216796875,
        "min_lon": -6.89918829999999960733703119331039488315582275390625,
        "max_lat": 37.161394999999998844941728748381137847900390625,
        "max_lon": -6.89911169999999973612148096435703337192535400390625
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 25, 2026 12:57 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 24m
  • Data Points: 27 AIS positions
  • Period: 2026-10-25T12:57:49+00:00 to 2026-10-25T19:21:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 384,
    "points_in_zone": 27,
    "first_point": {
        "ts": "2026-10-25T12:57:49+00:00",
        "lat": 37.16113500000000158252078108489513397216796875,
        "lon": -6.899158299999999854890120332129299640655517578125
    },
    "last_point": {
        "ts": "2026-10-25T19:21:49+00:00",
        "lat": 37.161124999999998408384271897375583648681640625,
        "lon": -6.89916830000000036449137041927315294742584228515625
    }
}
Methodology: 2026.01.18
Loiter Southern Öresund Surveillance Zone
Oct 25, 2026 12:57 UTC 75.0% ▼
  • Duration: 6h 24m
  • Radius: 30 meters
  • Data Points: 27 AIS positions
  • Centroid: 37.1611, -6.8992
  • Zone: Southern Öresund Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 29.5,
    "duration_minutes": 384,
    "points": 27,
    "centroid": {
        "lat": 37.1611314851851801677184994332492351531982421875,
        "lon": -6.89915765185185225760733374045230448246002197265625
    },
    "bbox": {
        "min_lat": 37.1610849999999999226929503493010997772216796875,
        "min_lon": -6.89918829999999960733703119331039488315582275390625,
        "max_lat": 37.161394999999998844941728748381137847900390625,
        "max_lon": -6.89911169999999973612148096435703337192535400390625
    },
    "zone_id": "discovered_003"
}
Methodology: 2026.01.18
Zone Dwell Southern Öresund Surveillance Zone
Oct 25, 2026 11:15 UTC 80.0% ▼
  • Zone: Southern Öresund Surveillance Zone
  • Duration: 6h 24m
  • Data Points: 20 AIS positions
  • Period: 2026-10-25T11:15:49+00:00 to 2026-10-25T17:39:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_003",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 384,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-10-25T11:15:49+00:00",
        "lat": 37.1611132999999966841642162762582302093505859375,
        "lon": -6.89915500000000037061909097246825695037841796875
    },
    "last_point": {
        "ts": "2026-10-25T17:39:49+00:00",
        "lat": 37.161124999999998408384271897375583648681640625,
        "lon": -6.8991632999999996656015355256386101245880126953125
    }
}
Methodology: 2026.01.18

Recent Position Data

Time (UTC) Lat Lon Speed Course Zone
Oct 27 21:16 35.9741 -5.2003 12.8 kn 98.3° Ceuta/Gibraltar STS Zone
Oct 27 21:06 35.9790 -5.2452 13.1 kn 98.0° Ceuta/Gibraltar STS Zone
Oct 27 21:04 35.9799 -5.2540 12.7 kn 97.7° Ceuta/Gibraltar STS Zone
Oct 27 20:58 35.9825 -5.2817 12.5 kn 91.9° Ceuta/Gibraltar STS Zone
Oct 27 20:56 35.9825 -5.2867 12.7 kn 88.4° Ceuta/Gibraltar STS Zone
Oct 27 20:51 35.9816 -5.3089 13.1 kn 85.4° Ceuta/Gibraltar STS Zone
Oct 27 20:48 35.9805 -5.3254 13.4 kn 85.7° Ceuta/Gibraltar STS Zone
Oct 27 20:45 35.9797 -5.3396 13.8 kn 86.0° Ceuta/Gibraltar STS Zone
Oct 27 20:44 35.9795 -5.3432 13.8 kn 85.7° Ceuta/Gibraltar STS Zone
Oct 27 20:37 35.9780 -5.3766 14.5 kn 86.4° Ceuta/Gibraltar STS Zone
Oct 27 20:36 35.9777 -5.3816 14.4 kn 85.9° Ceuta/Gibraltar STS Zone
Oct 27 20:33 35.9768 -5.3961 13.9 kn 84.3° Ceuta/Gibraltar STS Zone
Oct 27 20:31 35.9755 -5.4061 13.3 kn 79.0° Ceuta/Gibraltar STS Zone
Oct 27 20:12 35.9533 -5.4808 13.3 kn 71.8° Ceuta/Gibraltar STS Zone
Oct 27 20:06 35.9463 -5.5077 13.2 kn 72.4° Ceuta/Gibraltar STS Zone
Oct 27 20:05 35.9452 -5.5120 13.1 kn 72.1° Ceuta/Gibraltar STS Zone
Oct 27 20:02 35.9419 -5.5244 13.3 kn 72.4° Ceuta/Gibraltar STS Zone
Oct 27 19:54 35.9340 -5.5571 13.1 kn 75.4° Ceuta/Gibraltar STS Zone
Oct 27 19:53 35.9331 -5.5614 13.0 kn 77.4° Ceuta/Gibraltar STS Zone
Oct 27 19:50 35.9302 -5.5786 12.8 kn 79.8° Ceuta/Gibraltar STS 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.