PAVEL YUDIN

IMO 9612911

Vessel information

Vessel Name PAVEL YUDIN
IMO Number 9612911
MMSI 273353260
Vessel Type Tanker
Flag 🇷🇺 RUSSIA
Call Sign UBJI4
Length 140 m
Beam 17 m

Detected Events (4)

Sts🛰️✗ Ust-Luga/St. Petersburg Approach
Sep 9, 2026 07:08 UTC 72/100 ▼
Vessel A: IMO 9612911 (PAVEL YUDIN) RUSSIA
Vessel B: IMO 8923557 (NARVA) RUSSIA
  • Minimum Distance: 442 meters
  • Average Distance: 449 meters
  • Duration: 3h 33m
  • Period: 2026-09-09T07:08:08+00:00 to 2026-09-09T10:41:11+00:00
  • Vessel A Avg Speed: 0.3 knots
  • Vessel B Avg Speed: 0.4 knots
  • Zone: Ust-Luga/St. Petersburg Approach

Confidence Analysis

Score: 72/100

Moderate-confidence STS candidate. Two tankers (PAVEL YUDIN and NARVA) maintained close proximity (min 442m, avg 449m) for 213 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.4 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Ust-Luga/St. Petersburg Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 442m, avg 449m
Duration25/25Duration 213 minutes
Speed Stability17/20both nearly stationary; stable speeds
Distance Consistency15/15Distance variance ±8m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Ust-Luga/St. Petersburg Approach

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-09-09T11:45:01.701690+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273353260,
        "imo": 9612911,
        "name": "PAVEL YUDIN",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273430960,
        "imo": 8923557,
        "name": "NARVA",
        "flag": "RUSSIA"
    },
    "min_distance_m": 441.80000000000001136868377216160297393798828125,
    "avg_distance_m": 448.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 8,
    "duration_minutes": 213.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 12783,
    "speed_a_avg": 0.330000000000000015543122344752191565930843353271484375,
    "speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_avg": 0.36999999999999999555910790149937383830547332763671875,
    "speed_b_std": 0.38000000000000000444089209850062616169452667236328125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.330000000000000015543122344752191565930843353271484375,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0.36999999999999999555910790149937383830547332763671875,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        }
    },
    "time_window": {
        "start": "2026-09-09T07:08:08+00:00",
        "end": "2026-09-09T10:41:11+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
    },
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "score": {
        "value": 72,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 442m, avg 449m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 213 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b18m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Ust-Luga\/St. Petersburg Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (PAVEL YUDIN and NARVA) maintained close proximity (min 442m, avg 449m) for 213 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.4 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Ust-Luga\/St. Petersburg Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 59.8872307999999975436367094516754150390625,
            "lon": 30.212471900000000601949068368412554264068603515625
        },
        "time_window": {
            "start_ts": "2026-09-09T07:08:08+00:00",
            "end_ts": "2026-09-09T10:41:11+00:00"
        },
        "searched_at": "2026-09-09T11:45:01.701690+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Ust-Luga/St. Petersburg Approach
Sep 9, 2026 07:08 UTC 80.0% ▼
  • Zone: Ust-Luga/St. Petersburg Approach
  • Duration: 3h 33m
  • Data Points: 3 AIS positions
  • Period: 2026-09-09T07:08:08+00:00 to 2026-09-09T10:41:11+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 213.099999999999994315658113919198513031005859375,
    "points_in_zone": 3,
    "first_point": {
        "ts": "2026-09-09T07:08:08+00:00",
        "lat": 59.88512829999999809160726726986467838287353515625,
        "lon": 30.212528299999998893099473207257688045501708984375
    },
    "last_point": {
        "ts": "2026-09-09T10:41:11+00:00",
        "lat": 59.88528170000000017125785234384238719940185546875,
        "lon": 30.21267830000000031986928661353886127471923828125
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Ust-Luga/St. Petersburg Approach
Sep 9, 2026 07:08 UTC 90/100 ▼
Vessel A: IMO 9612911 (PAVEL YUDIN) RUSSIA
Vessel B: IMO 8934295 (VOLGONEFT 237) RUSSIA
  • Minimum Distance: 149 meters
  • Average Distance: 150 meters
  • Duration: 3h 27m
  • Period: 2026-09-09T07:08:08+00:00 to 2026-09-09T10:35:11+00:00
  • Vessel A Avg Speed: 0.4 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Ust-Luga/St. Petersburg Approach

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (PAVEL YUDIN and VOLGONEFT 237) maintained close proximity (min 149m, avg 150m) for 207 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Ust-Luga/St. Petersburg Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness20/25Min distance 149m, avg 150m
Duration25/25Duration 207 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Ust-Luga/St. Petersburg Approach

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-09-09T12:30:20.182110+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 273353260,
        "imo": 9612911,
        "name": "PAVEL YUDIN",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273347630,
        "imo": 8934295,
        "name": "VOLGONEFT 237",
        "flag": "RUSSIA"
    },
    "min_distance_m": 149.400000000000005684341886080801486968994140625,
    "avg_distance_m": 150.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 1.3000000000000000444089209850062616169452667236328125,
    "duration_minutes": 207.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 12423,
    "speed_a_avg": 0.34999999999999997779553950749686919152736663818359375,
    "speed_a_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_b_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.34999999999999997779553950749686919152736663818359375,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-09-09T07:08:08+00:00",
        "end": "2026-09-09T10:35:11+00:00"
    },
    "points_count": {
        "vessel_a": 2,
        "vessel_b": 2
    },
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 149m, avg 150m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 207 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: Ust-Luga\/St. Petersburg Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (PAVEL YUDIN and VOLGONEFT 237) maintained close proximity (min 149m, avg 150m) for 207 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Ust-Luga\/St. Petersburg Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 59.8845237999999966405084705911576747894287109375,
            "lon": 30.212781299999999617966750520281493663787841796875
        },
        "time_window": {
            "start_ts": "2026-09-09T07:08:08+00:00",
            "end_ts": "2026-09-09T10:35:11+00:00"
        },
        "searched_at": "2026-09-09T12:30:20.182110+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Ust-Luga/St. Petersburg Approach
Sep 9, 2026 06:32 UTC 80.0% ▼
  • Zone: Ust-Luga/St. Petersburg Approach
  • Duration: 4h 9m
  • Data Points: 4 AIS positions
  • Period: 2026-09-09T06:32:09+00:00 to 2026-09-09T10:41:11+00:00
Show Raw Evidence JSON
{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 249,
    "points_in_zone": 4,
    "first_point": {
        "ts": "2026-09-09T06:32:09+00:00",
        "lat": 59.88518330000000133850335259921848773956298828125,
        "lon": 30.21251829999999927167664282023906707763671875
    },
    "last_point": {
        "ts": "2026-09-09T10:41:11+00:00",
        "lat": 59.88528170000000017125785234384238719940185546875,
        "lon": 30.21267830000000031986928661353886127471923828125
    }
}
Methodology: 2026.01.18

Recent Position Data

Time (UTC) Lat Lon Speed Course Zone
Sep 9 10:41 59.8853 30.2127 0.3 kn 224.3° Ust-Luga/St. Petersburg Approach
Sep 9 10:35 59.8852 30.2126 0.3 kn 210.3° Ust-Luga/St. Petersburg Approach
Sep 9 07:08 59.8851 30.2125 0.4 kn 82.4° Ust-Luga/St. Petersburg Approach
Sep 9 06:32 59.8852 30.2125 0.1 kn 221.4° Ust-Luga/St. Petersburg Approach

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.