Intelligence Feed - FleetLeaks

Zone Dwell Ust-Luga/St. Petersburg Approach

Oct 7, 2026 04:25 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 3h 36m
Data Points: 5 AIS positions
Period: 2026-10-07T04:25:38+00:00 to 2026-10-07T08:01:39+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 216,
    "points_in_zone": 5,
    "first_point": {
        "ts": "2026-10-07T04:25:38+00:00",
        "lat": 59.87718000000000273530531558208167552947998046875,
        "lon": 30.2181767000000007783455657772719860076904296875
    },
    "last_point": {
        "ts": "2026-10-07T08:01:39+00:00",
        "lat": 59.8771167000000019697836250998079776763916015625,
        "lon": 30.21809830000000118843672680668532848358154296875
    }
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Oct 5, 2026 21:01 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 1h 45m
Data Points: 9 AIS positions
Period: 2026-10-05T21:01:37+00:00 to 2026-10-05T22:46:35+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 105,
    "points_in_zone": 9,
    "first_point": {
        "ts": "2026-10-05T21:01:37+00:00",
        "lat": 59.87675999999999731926436652429401874542236328125,
        "lon": 30.220749999999998891553332214243710041046142578125
    },
    "last_point": {
        "ts": "2026-10-05T22:46:35+00:00",
        "lat": 59.87681500000000056616045185364782810211181640625,
        "lon": 30.220729999999999648707671440206468105316162109375
    }
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Oct 5, 2026 20:13 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 2h 32m
Data Points: 12 AIS positions
Period: 2026-10-05T20:13:38+00:00 to 2026-10-05T22:46:35+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 152.900000000000005684341886080801486968994140625,
    "points_in_zone": 12,
    "first_point": {
        "ts": "2026-10-05T20:13:38+00:00",
        "lat": 59.87687329999999974461388774216175079345703125,
        "lon": 30.2207717000000002371962182223796844482421875
    },
    "last_point": {
        "ts": "2026-10-05T22:46:35+00:00",
        "lat": 59.87681500000000056616045185364782810211181640625,
        "lon": 30.220729999999999648707671440206468105316162109375
    }
}

Methodology: 2026.01.18

Loiter Ust-Luga/St. Petersburg Approach

Oct 5, 2026 20:13 UTC 75.0% ▼

Duration: 2h 32m
Radius: 9 meters
Data Points: 12 AIS positions
Centroid: 59.8768, 30.2207
Zone: Ust-Luga/St. Petersburg Approach

Show Raw Evidence JSON

{
    "radius_m": 9.199999999999999289457264239899814128875732421875,
    "duration_minutes": 152.900000000000005684341886080801486968994140625,
    "points": 12,
    "centroid": {
        "lat": 59.87679417499999345864125643856823444366455078125,
        "lon": 30.2207223666666635608635260723531246185302734375
    },
    "bbox": {
        "min_lat": 59.87675999999999731926436652429401874542236328125,
        "min_lon": 30.220658300000000195950633496977388858795166015625,
        "max_lat": 59.87687329999999974461388774216175079345703125,
        "max_lon": 30.2207717000000002371962182223796844482421875
    },
    "zone_id": "russia_ust_luga_approach"
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Oct 5, 2026 19:43 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 3h 3m
Data Points: 13 AIS positions
Period: 2026-10-05T19:43:35+00:00 to 2026-10-05T22:46:35+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 183,
    "points_in_zone": 13,
    "first_point": {
        "ts": "2026-10-05T19:43:35+00:00",
        "lat": 59.87682000000000215322870644740760326385498046875,
        "lon": 30.220716700000000543013811693526804447174072265625
    },
    "last_point": {
        "ts": "2026-10-05T22:46:35+00:00",
        "lat": 59.87681500000000056616045185364782810211181640625,
        "lon": 30.220729999999999648707671440206468105316162109375
    }
}

Methodology: 2026.01.18

Loiter Ust-Luga/St. Petersburg Approach

Oct 5, 2026 19:43 UTC 75.0% ▼

Duration: 3h 3m
Radius: 9 meters
Data Points: 13 AIS positions
Centroid: 59.8768, 30.2207
Zone: Ust-Luga/St. Petersburg Approach

Show Raw Evidence JSON

{
    "radius_m": 9,
    "duration_minutes": 183,
    "points": 13,
    "centroid": {
        "lat": 59.876796161538464957629912532866001129150390625,
        "lon": 30.22072193076922985710552893579006195068359375
    },
    "bbox": {
        "min_lat": 59.87675999999999731926436652429401874542236328125,
        "min_lon": 30.220658300000000195950633496977388858795166015625,
        "max_lat": 59.87687329999999974461388774216175079345703125,
        "max_lon": 30.2207717000000002371962182223796844482421875
    },
    "zone_id": "russia_ust_luga_approach"
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Oct 5, 2026 18:25 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 4h 20m
Data Points: 14 AIS positions
Period: 2026-10-05T18:25:38+00:00 to 2026-10-05T22:46:35+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 260.8999999999999772626324556767940521240234375,
    "points_in_zone": 14,
    "first_point": {
        "ts": "2026-10-05T18:25:38+00:00",
        "lat": 59.87681669999999911624399828724563121795654296875,
        "lon": 30.2206867000000016787453205324709415435791015625
    },
    "last_point": {
        "ts": "2026-10-05T22:46:35+00:00",
        "lat": 59.87681500000000056616045185364782810211181640625,
        "lon": 30.220729999999999648707671440206468105316162109375
    }
}

Methodology: 2026.01.18

Loiter Ust-Luga/St. Petersburg Approach

Oct 5, 2026 18:25 UTC 75.0% ▼

Duration: 4h 20m
Radius: 9 meters
Data Points: 14 AIS positions
Centroid: 59.8768, 30.2207
Zone: Ust-Luga/St. Petersburg Approach

Show Raw Evidence JSON

{
    "radius_m": 8.9000000000000003552713678800500929355621337890625,
    "duration_minutes": 260.8999999999999772626324556767940521240234375,
    "points": 14,
    "centroid": {
        "lat": 59.8767976285714240702873212285339832305908203125,
        "lon": 30.220719414285714066181753878481686115264892578125
    },
    "bbox": {
        "min_lat": 59.87675999999999731926436652429401874542236328125,
        "min_lon": 30.220658300000000195950633496977388858795166015625,
        "max_lat": 59.87687329999999974461388774216175079345703125,
        "max_lon": 30.2207717000000002371962182223796844482421875
    },
    "zone_id": "russia_ust_luga_approach"
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Oct 5, 2026 15:16 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 6h 15m
Data Points: 11 AIS positions
Period: 2026-10-05T15:16:36+00:00 to 2026-10-05T21:31:38+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 375,
    "points_in_zone": 11,
    "first_point": {
        "ts": "2026-10-05T15:16:36+00:00",
        "lat": 59.87677000000000049340087571181356906890869140625,
        "lon": 30.220756699999999028705133241601288318634033203125
    },
    "last_point": {
        "ts": "2026-10-05T21:31:38+00:00",
        "lat": 59.87677670000000063055267673917114734649658203125,
        "lon": 30.2207317000000017515048966743052005767822265625
    }
}

Methodology: 2026.01.18

Loiter Ust-Luga/St. Petersburg Approach

Oct 5, 2026 15:16 UTC 75.0% ▼

Duration: 6h 15m
Radius: 9 meters
Data Points: 11 AIS positions
Centroid: 59.8768, 30.2207
Zone: Ust-Luga/St. Petersburg Approach

Show Raw Evidence JSON

{
    "radius_m": 8.9000000000000003552713678800500929355621337890625,
    "duration_minutes": 375,
    "points": 11,
    "centroid": {
        "lat": 59.8767959181818270053554442711174488067626953125,
        "lon": 30.22072956363636109244907856918871402740478515625
    },
    "bbox": {
        "min_lat": 59.87675999999999731926436652429401874542236328125,
        "min_lon": 30.2206867000000016787453205324709415435791015625,
        "max_lat": 59.87687329999999974461388774216175079345703125,
        "max_lon": 30.2207717000000002371962182223796844482421875
    },
    "zone_id": "russia_ust_luga_approach"
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Oct 2, 2026 01:08 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 1h 6m
Data Points: 5 AIS positions
Period: 2026-10-02T01:08:47+00:00 to 2026-10-02T02:14:46+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 66,
    "points_in_zone": 5,
    "first_point": {
        "ts": "2026-10-02T01:08:47+00:00",
        "lat": 59.87718670000000287245711660943925380706787109375,
        "lon": 30.218115000000000947011358221061527729034423828125
    },
    "last_point": {
        "ts": "2026-10-02T02:14:46+00:00",
        "lat": 59.877146699999997281338437460362911224365234375,
        "lon": 30.2181183000000004312823875807225704193115234375
    }
}

Methodology: 2026.01.18

Sts🛰️✗ Ust-Luga/St. Petersburg Approach

Oct 2, 2026 01:02 UTC 70/100 ▼

Vessel A: IMO 9226566 (VALERIY ZELENKO) RUSSIA

Vessel B: IMO 8033089 (SGV FLOT) Russia

Minimum Distance: 129 meters
Average Distance: 133 meters
Duration: 39 minutes
Period: 2026-10-02T01:02:11+00:00 to 2026-10-02T01:41:43+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.0 knots
Zone: Ust-Luga/St. Petersburg Approach

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (VALERIY ZELENKO and SGV FLOT) maintained close proximity (min 129m, avg 133m) for 40 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 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

Factor	Score	Detail
Distance Tightness	20/25	Min distance 129m, avg 133m
Duration	5/25	Duration 40 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±2m
Isolation	5/10	Isolation data not available
Context	5/5	In 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: 2026-10-02T02:30:02.009970+00:00

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 273333950,
        "imo": 9226566,
        "name": "VALERIY ZELENKO",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273458830,
        "imo": 8033089,
        "name": "SGV FLOT",
        "flag": "Russia"
    },
    "min_distance_m": 129,
    "avg_distance_m": 132.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 39.5,
    "overlap_duration_s": 2372,
    "speed_a_avg": 0.11999999999999999555910790149937383830547332763671875,
    "speed_a_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.11999999999999999555910790149937383830547332763671875,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-10-02T01:02:11+00:00",
        "end": "2026-10-02T01:41:43+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 129m, avg 133m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 40 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: Ust-Luga\/St. Petersburg Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (VALERIY ZELENKO and SGV FLOT) maintained close proximity (min 129m, avg 133m) for 40 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 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": 59.87698540000000235750121646560728549957275390625,
            "lon": 30.219221999999998473640516749583184719085693359375
        },
        "time_window": {
            "start_ts": "2026-10-02T01:02:11+00:00",
            "end_ts": "2026-10-02T01:41:43+00:00"
        },
        "searched_at": "2026-10-02T02:30:02.009970+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Oct 2, 2026 00:17 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 1h 57m
Data Points: 8 AIS positions
Period: 2026-10-02T00:17:46+00:00 to 2026-10-02T02:14:46+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 117,
    "points_in_zone": 8,
    "first_point": {
        "ts": "2026-10-02T00:17:46+00:00",
        "lat": 59.87716499999999797410055180080235004425048828125,
        "lon": 30.218096700000000254249243880622088909149169921875
    },
    "last_point": {
        "ts": "2026-10-02T02:14:46+00:00",
        "lat": 59.877146699999997281338437460362911224365234375,
        "lon": 30.2181183000000004312823875807225704193115234375
    }
}

Methodology: 2026.01.18

Sts Ust-Luga/St. Petersburg Approach

Oct 2, 2026 00:07 UTC 85/100 ▼

Vessel A: IMO 8033089 (SGV FLOT) Russia

Vessel B: IMO 9226566 (VALERIY ZELENKO) RUSSIA

Minimum Distance: 129 meters
Average Distance: 132 meters
Duration: 1h 33m
Period: 2026-10-02T00:41:45+00:00 to 2026-10-02T02:14:46+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.1 knots
Zone: Ust-Luga/St. Petersburg Approach

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (SGV FLOT and VALERIY ZELENKO) maintained close proximity (min 129m, avg 132m) for 93 minutes. Both vessels were slow-moving (avg speeds 0.0 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

Factor	Score	Detail
Distance Tightness	20/25	Min distance 129m, avg 132m
Duration	20/25	Duration 93 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±2m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Ust-Luga/St. Petersburg Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 273458830,
        "imo": 8033089,
        "name": "SGV FLOT",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273333950,
        "imo": 9226566,
        "name": "VALERIY ZELENKO",
        "flag": "RUSSIA"
    },
    "min_distance_m": 129,
    "avg_distance_m": 131.599999999999994315658113919198513031005859375,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 93,
    "overlap_duration_s": 5581,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0.13000000000000000444089209850062616169452667236328125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        }
    },
    "time_window": {
        "start": "2026-10-02T00:41:45+00:00",
        "end": "2026-10-02T02:14:46+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 129m, avg 132m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 93 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: Ust-Luga\/St. Petersburg Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (SGV FLOT and VALERIY ZELENKO) maintained close proximity (min 129m, avg 132m) for 93 minutes. Both vessels were slow-moving (avg speeds 0.0 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."
    }
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Oct 1, 2026 23:41 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 2h 33m
Data Points: 9 AIS positions
Period: 2026-10-01T23:41:45+00:00 to 2026-10-02T02:14:46+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 153,
    "points_in_zone": 9,
    "first_point": {
        "ts": "2026-10-01T23:41:45+00:00",
        "lat": 59.87718170000000128538886201567947864532470703125,
        "lon": 30.218081699999999045758158899843692779541015625
    },
    "last_point": {
        "ts": "2026-10-02T02:14:46+00:00",
        "lat": 59.877146699999997281338437460362911224365234375,
        "lon": 30.2181183000000004312823875807225704193115234375
    }
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Oct 1, 2026 19:59 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 6h 15m
Data Points: 10 AIS positions
Period: 2026-10-01T19:59:47+00:00 to 2026-10-02T02:14:46+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 375,
    "points_in_zone": 10,
    "first_point": {
        "ts": "2026-10-01T19:59:47+00:00",
        "lat": 59.87716830000000101108525996096432209014892578125,
        "lon": 30.2181183000000004312823875807225704193115234375
    },
    "last_point": {
        "ts": "2026-10-02T02:14:46+00:00",
        "lat": 59.877146699999997281338437460362911224365234375,
        "lon": 30.2181183000000004312823875807225704193115234375
    }
}

Methodology: 2026.01.18

Loiter Ust-Luga/St. Petersburg Approach

Oct 1, 2026 19:59 UTC 75.0% ▼

Duration: 6h 15m
Radius: 3 meters
Data Points: 10 AIS positions
Centroid: 59.8772, 30.2181
Zone: Ust-Luga/St. Petersburg Approach

Show Raw Evidence JSON

{
    "radius_m": 2.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 375,
    "points": 10,
    "centroid": {
        "lat": 59.87716684000000810783603810705244541168212890625,
        "lon": 30.21809500000000525687937624752521514892578125
    },
    "bbox": {
        "min_lat": 59.87714330000000018117134459316730499267578125,
        "min_lon": 30.218071699999999424335328512825071811676025390625,
        "max_lat": 59.87718670000000287245711660943925380706787109375,
        "max_lon": 30.2181183000000004312823875807225704193115234375
    },
    "zone_id": "russia_ust_luga_approach"
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Oct 1, 2026 14:14 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 5h 45m
Data Points: 3 AIS positions
Period: 2026-10-01T14:14:45+00:00 to 2026-10-01T19:59:47+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 345,
    "points_in_zone": 3,
    "first_point": {
        "ts": "2026-10-01T14:14:45+00:00",
        "lat": 59.8771117000000003827153705060482025146484375,
        "lon": 30.218141700000000327008820022456347942352294921875
    },
    "last_point": {
        "ts": "2026-10-01T19:59:47+00:00",
        "lat": 59.87716830000000101108525996096432209014892578125,
        "lon": 30.2181183000000004312823875807225704193115234375
    }
}

Methodology: 2026.01.18

Sts Ust-Luga/St. Petersburg Approach

Oct 1, 2026 14:05 UTC 90/100 ▼

Vessel A: IMO 8033089 (SGV FLOT) Russia

Vessel B: IMO 9226566 (VALERIY ZELENKO) RUSSIA

Minimum Distance: 129 meters
Average Distance: 131 meters
Duration: 5h 45m
Period: 2026-10-01T14:14:45+00:00 to 2026-10-01T19:59:47+00:00
Vessel A Avg Speed: 0.0 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 (SGV FLOT and VALERIY ZELENKO) maintained close proximity (min 128m, avg 131m) for 345 minutes. Both vessels were slow-moving (avg speeds 0.0 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

Factor	Score	Detail
Distance Tightness	20/25	Min distance 128m, avg 131m
Duration	25/25	Duration 345 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±2m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Ust-Luga/St. Petersburg Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 273458830,
        "imo": 8033089,
        "name": "SGV FLOT",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273333950,
        "imo": 9226566,
        "name": "VALERIY ZELENKO",
        "flag": "RUSSIA"
    },
    "min_distance_m": 128.5,
    "avg_distance_m": 131,
    "distance_consistency_m": 2.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 345,
    "overlap_duration_s": 20702,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_b_std": 0.1700000000000000122124532708767219446599483489990234375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        }
    },
    "time_window": {
        "start": "2026-10-01T14:14:45+00:00",
        "end": "2026-10-01T19:59:47+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": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 128m, avg 131m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 345 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: Ust-Luga\/St. Petersburg Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (SGV FLOT and VALERIY ZELENKO) maintained close proximity (min 128m, avg 131m) for 345 minutes. Both vessels were slow-moving (avg speeds 0.0 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."
    }
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Oct 1, 2026 13:35 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 6h 24m
Data Points: 4 AIS positions
Period: 2026-10-01T13:35:46+00:00 to 2026-10-01T19:59:47+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 384,
    "points_in_zone": 4,
    "first_point": {
        "ts": "2026-10-01T13:35:46+00:00",
        "lat": 59.87712499999999948840923025272786617279052734375,
        "lon": 30.218154999999999432702679769136011600494384765625
    },
    "last_point": {
        "ts": "2026-10-01T19:59:47+00:00",
        "lat": 59.87716830000000101108525996096432209014892578125,
        "lon": 30.2181183000000004312823875807225704193115234375
    }
}

Methodology: 2026.01.18

Sts🛰️✗ Ust-Luga/St. Petersburg Approach

Oct 1, 2026 12:35 UTC 90/100 ▼

Vessel A: IMO 8033089 (SGV FLOT) Russia

Vessel B: IMO 9226566 (VALERIY ZELENKO) RUSSIA

Minimum Distance: 128 meters
Average Distance: 129 meters
Duration: 2h 3m
Period: 2026-10-01T12:35:43+00:00 to 2026-10-01T14:38:45+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Ust-Luga/St. Petersburg Approach

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (SGV FLOT and VALERIY ZELENKO) maintained close proximity (min 128m, avg 129m) for 123 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 Ust-Luga/St. Petersburg Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	20/25	Min distance 128m, avg 129m
Duration	25/25	Duration 123 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±1m
Isolation	5/10	Isolation data not available
Context	5/5	In 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: 2026-10-01T19:15:01.425251+00:00

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 273458830,
        "imo": 8033089,
        "name": "SGV FLOT",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273333950,
        "imo": 9226566,
        "name": "VALERIY ZELENKO",
        "flag": "RUSSIA"
    },
    "min_distance_m": 128.400000000000005684341886080801486968994140625,
    "avg_distance_m": 129.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 123,
    "overlap_duration_s": 7382,
    "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": "2026-10-01T12:35:43+00:00",
        "end": "2026-10-01T14:38:45+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "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 128m, avg 129m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 123 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 (SGV FLOT and VALERIY ZELENKO) maintained close proximity (min 128m, avg 129m) for 123 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 Ust-Luga\/St. Petersburg Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 59.87694690000000008467395673505961894989013671875,
            "lon": 30.21924020000000155050656758248805999755859375
        },
        "time_window": {
            "start_ts": "2026-10-01T12:35:43+00:00",
            "end_ts": "2026-10-01T14:38:45+00:00"
        },
        "searched_at": "2026-10-01T19:15:01.425251+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Oct 1, 2026 12:29 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 2h 9m
Data Points: 5 AIS positions
Period: 2026-10-01T12:29:45+00:00 to 2026-10-01T14:38:45+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 129,
    "points_in_zone": 5,
    "first_point": {
        "ts": "2026-10-01T12:29:45+00:00",
        "lat": 59.8771516999999988684066920541226863861083984375,
        "lon": 30.218096700000000254249243880622088909149169921875
    },
    "last_point": {
        "ts": "2026-10-01T14:38:45+00:00",
        "lat": 59.877108300000003282548277638852596282958984375,
        "lon": 30.218141700000000327008820022456347942352294921875
    }
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Oct 1, 2026 10:59 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 3h 39m
Data Points: 6 AIS positions
Period: 2026-10-01T10:59:47+00:00 to 2026-10-01T14:38:45+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 219,
    "points_in_zone": 6,
    "first_point": {
        "ts": "2026-10-01T10:59:47+00:00",
        "lat": 59.8771100000000018326318240724503993988037109375,
        "lon": 30.218108300000000809859557193703949451446533203125
    },
    "last_point": {
        "ts": "2026-10-01T14:38:45+00:00",
        "lat": 59.877108300000003282548277638852596282958984375,
        "lon": 30.218141700000000327008820022456347942352294921875
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 29, 2026 01:00 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 1h 39m
Data Points: 29 AIS positions
Period: 2026-09-29T01:00:28+00:00 to 2026-09-29T02:39:49+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 99.2999999999999971578290569595992565155029296875,
    "points_in_zone": 29,
    "first_point": {
        "ts": "2026-09-29T01:00:28+00:00",
        "lat": 59.8672667000000018333594198338687419891357421875,
        "lon": 25.763683300000000286900103674270212650299072265625
    },
    "last_point": {
        "ts": "2026-09-29T02:39:49+00:00",
        "lat": 59.91618330000000014479155652225017547607421875,
        "lon": 26.1160832999999996673068380914628505706787109375
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 29, 2026 00:00 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 2h 38m
Data Points: 45 AIS positions
Period: 2026-09-29T00:00:58+00:00 to 2026-09-29T02:39:49+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 158.80000000000001136868377216160297393798828125,
    "points_in_zone": 45,
    "first_point": {
        "ts": "2026-09-29T00:00:58+00:00",
        "lat": 59.84535000000000337649908033199608325958251953125,
        "lon": 25.54650000000000176214598468504846096038818359375
    },
    "last_point": {
        "ts": "2026-09-29T02:39:49+00:00",
        "lat": 59.91618330000000014479155652225017547607421875,
        "lon": 26.1160832999999996673068380914628505706787109375
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 28, 2026 23:01 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 3h 38m
Data Points: 62 AIS positions
Period: 2026-09-28T23:01:08+00:00 to 2026-09-29T02:39:49+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 218.69999999999998863131622783839702606201171875,
    "points_in_zone": 62,
    "first_point": {
        "ts": "2026-09-28T23:01:08+00:00",
        "lat": 59.82133329999999915571606834419071674346923828125,
        "lon": 25.326133299999998627072272938676178455352783203125
    },
    "last_point": {
        "ts": "2026-09-29T02:39:49+00:00",
        "lat": 59.91618330000000014479155652225017547607421875,
        "lon": 26.1160832999999996673068380914628505706787109375
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 28, 2026 22:02 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 4h 37m
Data Points: 79 AIS positions
Period: 2026-09-28T22:02:18+00:00 to 2026-09-29T02:39:49+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 277.5,
    "points_in_zone": 79,
    "first_point": {
        "ts": "2026-09-28T22:02:18+00:00",
        "lat": 59.79148330000000299833118333481252193450927734375,
        "lon": 25.11651669999999825222403160296380519866943359375
    },
    "last_point": {
        "ts": "2026-09-29T02:39:49+00:00",
        "lat": 59.91618330000000014479155652225017547607421875,
        "lon": 26.1160832999999996673068380914628505706787109375
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 28, 2026 21:01 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 5h 38m
Data Points: 99 AIS positions
Period: 2026-09-28T21:01:08+00:00 to 2026-09-29T02:39:49+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 338.69999999999998863131622783839702606201171875,
    "points_in_zone": 99,
    "first_point": {
        "ts": "2026-09-28T21:01:08+00:00",
        "lat": 59.76789999999999736246536485850811004638671875,
        "lon": 24.899166699999998542125467793084681034088134765625
    },
    "last_point": {
        "ts": "2026-09-29T02:39:49+00:00",
        "lat": 59.91618330000000014479155652225017547607421875,
        "lon": 26.1160832999999996673068380914628505706787109375
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 28, 2026 20:35 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 6h 4m
Data Points: 107 AIS positions
Period: 2026-09-28T20:35:49+00:00 to 2026-09-29T02:39:49+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 364,
    "points_in_zone": 107,
    "first_point": {
        "ts": "2026-09-28T20:35:49+00:00",
        "lat": 59.758866699999998672865331172943115234375,
        "lon": 24.808033300000001730722942738793790340423583984375
    },
    "last_point": {
        "ts": "2026-09-29T02:39:49+00:00",
        "lat": 59.91618330000000014479155652225017547607421875,
        "lon": 26.1160832999999996673068380914628505706787109375
    }
}

Methodology: 2026.01.18

Zone Dwell discovered_216

Sep 28, 2026 20:00 UTC 80.0% ▼

Zone: discovered_216
Duration: 1h 6m
Data Points: 22 AIS positions
Period: 2026-09-28T20:00:09+00:00 to 2026-09-28T21:06:09+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_216",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 66,
    "points_in_zone": 22,
    "first_point": {
        "ts": "2026-09-28T20:00:09+00:00",
        "lat": 59.74765000000000014779288903810083866119384765625,
        "lon": 24.680099999999999482724888366647064685821533203125
    },
    "last_point": {
        "ts": "2026-09-28T21:06:09+00:00",
        "lat": 59.76971669999999647870936314575374126434326171875,
        "lon": 24.917300000000000892441676114685833454132080078125
    }
}

Methodology: 2026.01.18

Zone Dwell discovered_216

Sep 28, 2026 19:30 UTC 80.0% ▼

Zone: discovered_216
Duration: 1h 35m
Data Points: 32 AIS positions
Period: 2026-09-28T19:30:49+00:00 to 2026-09-28T21:06:09+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_216",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 95.2999999999999971578290569595992565155029296875,
    "points_in_zone": 32,
    "first_point": {
        "ts": "2026-09-28T19:30:49+00:00",
        "lat": 59.7358167000000008783899829722940921783447265625,
        "lon": 24.573183300000000173213265952654182910919189453125
    },
    "last_point": {
        "ts": "2026-09-28T21:06:09+00:00",
        "lat": 59.76971669999999647870936314575374126434326171875,
        "lon": 24.917300000000000892441676114685833454132080078125
    }
}

Methodology: 2026.01.18

Zone Dwell Southern Öresund Surveillance Zone

Sep 17, 2026 23:03 UTC 80.0% ▼

Zone: Southern Öresund Surveillance Zone
Duration: 1h 58m
Data Points: 29 AIS positions
Period: 2026-09-17T23:03:00+00:00 to 2026-09-18T01:01:00+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_007",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 118,
    "points_in_zone": 29,
    "first_point": {
        "ts": "2026-09-17T23:03:00+00:00",
        "lat": 59.5779500000000012960299500264227390289306640625,
        "lon": 22.990133300000000105001163319684565067291259765625
    },
    "last_point": {
        "ts": "2026-09-18T01:01:00+00:00",
        "lat": 59.5265332999999969842974678613245487213134765625,
        "lon": 22.641116700000001316084308200515806674957275390625
    }
}

Methodology: 2026.01.18

Zone Dwell Southern Öresund Surveillance Zone

Sep 17, 2026 22:00 UTC 80.0% ▼

Zone: Southern Öresund Surveillance Zone
Duration: 3 hours
Data Points: 38 AIS positions
Period: 2026-09-17T22:00:58+00:00 to 2026-09-18T01:01:00+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_007",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 180,
    "points_in_zone": 38,
    "first_point": {
        "ts": "2026-09-17T22:00:58+00:00",
        "lat": 59.60303329999999988331182976253330707550048828125,
        "lon": 23.169483299999999559304342255927622318267822265625
    },
    "last_point": {
        "ts": "2026-09-18T01:01:00+00:00",
        "lat": 59.5265332999999969842974678613245487213134765625,
        "lon": 22.641116700000001316084308200515806674957275390625
    }
}

Methodology: 2026.01.18

Zone Dwell Southern Öresund Surveillance Zone

Sep 17, 2026 21:01 UTC 80.0% ▼

Zone: Southern Öresund Surveillance Zone
Duration: 3h 59m
Data Points: 57 AIS positions
Period: 2026-09-17T21:01:58+00:00 to 2026-09-18T01:01:00+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_007",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 239,
    "points_in_zone": 57,
    "first_point": {
        "ts": "2026-09-17T21:01:58+00:00",
        "lat": 59.62995000000000089812601800076663494110107421875,
        "lon": 23.34094999999999942019712761975824832916259765625
    },
    "last_point": {
        "ts": "2026-09-18T01:01:00+00:00",
        "lat": 59.5265332999999969842974678613245487213134765625,
        "lon": 22.641116700000001316084308200515806674957275390625
    }
}

Methodology: 2026.01.18

Zone Dwell Southern Öresund Surveillance Zone

Sep 17, 2026 20:02 UTC 80.0% ▼

Zone: Southern Öresund Surveillance Zone
Duration: 4h 58m
Data Points: 72 AIS positions
Period: 2026-09-17T20:02:40+00:00 to 2026-09-18T01:01:00+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_007",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 298.30000000000001136868377216160297393798828125,
    "points_in_zone": 72,
    "first_point": {
        "ts": "2026-09-17T20:02:40+00:00",
        "lat": 59.655450000000001864464138634502887725830078125,
        "lon": 23.517966699999998780867827008478343486785888671875
    },
    "last_point": {
        "ts": "2026-09-18T01:01:00+00:00",
        "lat": 59.5265332999999969842974678613245487213134765625,
        "lon": 22.641116700000001316084308200515806674957275390625
    }
}

Methodology: 2026.01.18

Ais Gap🛰️✗ discovered_216

Sep 17, 2026 15:27 UTC 70.0% ▼

Gap Duration: 4h 35m
Last Seen: 2026-09-17T15:27:41+00:00 at 59.7847, 24.4331 (Zone: discovered_216)
Next Seen: 2026-09-17T20:02:40+00:00 at 59.6555, 23.5180

🛰️ Gap Corroboration

✗ No Imagery

These are snapshots that may corroborate presence during the gap. They do not reconstruct a continuous route.

SAR Imagery (Sentinel-1)

Status: ✗ No SAR coverage

No Sentinel-1 scenes covering corridor and time window

VIIRS Thermal Anomaly

Status: ✗ No detections

No VIIRS thermal/light detections in corridor

Searched: 2026-09-17T20:15:01.600178+00:00

Show Raw Evidence JSON

{
    "gap_minutes": 275,
    "last_seen": {
        "ts": "2026-09-17T15:27:41+00:00",
        "lat": 59.78471669999999704714355175383388996124267578125,
        "lon": 24.43313330000000149766492540948092937469482421875,
        "sog": 6.5,
        "zone_id": "discovered_216"
    },
    "next_seen": {
        "ts": "2026-09-17T20:02:40+00:00",
        "lat": 59.655450000000001864464138634502887725830078125,
        "lon": 23.517966699999998780867827008478343486785888671875,
        "zone_ids": [
            "discovered_007"
        ]
    },
    "gap_enrichment": {
        "status": "not_found",
        "corridor": {
            "start": {
                "lat": 59.78471669999999704714355175383388996124267578125,
                "lon": 24.43313330000000149766492540948092937469482421875,
                "ts": "2026-09-17T15:27:41+00:00"
            },
            "end": {
                "lat": 59.655450000000001864464138634502887725830078125,
                "lon": 23.517966699999998780867827008478343486785888671875,
                "ts": "2026-09-17T20:02:40+00:00"
            },
            "bbox": {
                "min_lat": 59.47527000000000185764292837120592594146728515625,
                "min_lon": 23.16062600000000060163074522279202938079833984375,
                "max_lat": 59.96489700000000055979398894123733043670654296875,
                "max_lon": 24.790473999999999676902007195167243480682373046875
            },
            "buffer_km": 20
        },
        "sar": {
            "status": "not_found",
            "notes": "No Sentinel-1 scenes covering corridor and time window"
        },
        "viirs": {
            "status": "not_found",
            "notes": "No VIIRS thermal\/light detections in corridor"
        },
        "searched_at": "2026-09-17T20:15:01.600178+00:00"
    }
}

Methodology: 2026.01.18

Zone Dwell discovered_216

Sep 17, 2026 14:02 UTC 80.0% ▼

Zone: discovered_216
Duration: 1h 25m
Data Points: 23 AIS positions
Period: 2026-09-17T14:02:11+00:00 to 2026-09-17T15:27:41+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_216",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 85.5,
    "points_in_zone": 23,
    "first_point": {
        "ts": "2026-09-17T14:02:11+00:00",
        "lat": 59.8179166999999978315827320329844951629638671875,
        "lon": 24.727516699999998905923348502255976200103759765625
    },
    "last_point": {
        "ts": "2026-09-17T15:27:41+00:00",
        "lat": 59.78471669999999704714355175383388996124267578125,
        "lon": 24.43313330000000149766492540948092937469482421875
    }
}

Methodology: 2026.01.18

Zone Dwell discovered_216

Sep 17, 2026 13:11 UTC 80.0% ▼

Zone: discovered_216
Duration: 2h 16m
Data Points: 32 AIS positions
Period: 2026-09-17T13:11:19+00:00 to 2026-09-17T15:27:41+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_216",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 136.400000000000005684341886080801486968994140625,
    "points_in_zone": 32,
    "first_point": {
        "ts": "2026-09-17T13:11:19+00:00",
        "lat": 59.83281670000000218578861677087843418121337890625,
        "lon": 24.8905333000000013043973012827336788177490234375
    },
    "last_point": {
        "ts": "2026-09-17T15:27:41+00:00",
        "lat": 59.78471669999999704714355175383388996124267578125,
        "lon": 24.43313330000000149766492540948092937469482421875
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 17, 2026 12:00 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 1h 37m
Data Points: 25 AIS positions
Period: 2026-09-17T12:00:59+00:00 to 2026-09-17T13:38:30+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 97.5,
    "points_in_zone": 25,
    "first_point": {
        "ts": "2026-09-17T12:00:59+00:00",
        "lat": 59.85278329999999868960003368556499481201171875,
        "lon": 25.114683299999999377405401901341974735260009765625
    },
    "last_point": {
        "ts": "2026-09-17T13:38:30+00:00",
        "lat": 59.82464999999999832880348549224436283111572265625,
        "lon": 24.8039500000000003865352482534945011138916015625
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 17, 2026 11:04 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 2h 33m
Data Points: 41 AIS positions
Period: 2026-09-17T11:04:40+00:00 to 2026-09-17T13:38:30+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 153.80000000000001136868377216160297393798828125,
    "points_in_zone": 41,
    "first_point": {
        "ts": "2026-09-17T11:04:40+00:00",
        "lat": 59.86871670000000023037500795908272266387939453125,
        "lon": 25.290866699999998701287040603347122669219970703125
    },
    "last_point": {
        "ts": "2026-09-17T13:38:30+00:00",
        "lat": 59.82464999999999832880348549224436283111572265625,
        "lon": 24.8039500000000003865352482534945011138916015625
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 17, 2026 10:00 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 3h 37m
Data Points: 57 AIS positions
Period: 2026-09-17T10:00:40+00:00 to 2026-09-17T13:38:30+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 217.80000000000001136868377216160297393798828125,
    "points_in_zone": 57,
    "first_point": {
        "ts": "2026-09-17T10:00:40+00:00",
        "lat": 59.88648330000000186146280611865222454071044921875,
        "lon": 25.4799000000000006593836587853729724884033203125
    },
    "last_point": {
        "ts": "2026-09-17T13:38:30+00:00",
        "lat": 59.82464999999999832880348549224436283111572265625,
        "lon": 24.8039500000000003865352482534945011138916015625
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 17, 2026 09:00 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 4h 37m
Data Points: 75 AIS positions
Period: 2026-09-17T09:00:55+00:00 to 2026-09-17T13:38:30+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 277.6000000000000227373675443232059478759765625,
    "points_in_zone": 75,
    "first_point": {
        "ts": "2026-09-17T09:00:55+00:00",
        "lat": 59.9033500000000032059688237495720386505126953125,
        "lon": 25.662883300000000730278770788572728633880615234375
    },
    "last_point": {
        "ts": "2026-09-17T13:38:30+00:00",
        "lat": 59.82464999999999832880348549224436283111572265625,
        "lon": 24.8039500000000003865352482534945011138916015625
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 17, 2026 08:01 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 5h 36m
Data Points: 91 AIS positions
Period: 2026-09-17T08:01:43+00:00 to 2026-09-17T13:38:30+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 336.80000000000001136868377216160297393798828125,
    "points_in_zone": 91,
    "first_point": {
        "ts": "2026-09-17T08:01:43+00:00",
        "lat": 59.922100000000000363797880709171295166015625,
        "lon": 25.840433300000000826912582851946353912353515625
    },
    "last_point": {
        "ts": "2026-09-17T13:38:30+00:00",
        "lat": 59.82464999999999832880348549224436283111572265625,
        "lon": 24.8039500000000003865352482534945011138916015625
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 17, 2026 07:00 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 6h 37m
Data Points: 107 AIS positions
Period: 2026-09-17T07:00:34+00:00 to 2026-09-17T13:38:30+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 397.8999999999999772626324556767940521240234375,
    "points_in_zone": 107,
    "first_point": {
        "ts": "2026-09-17T07:00:34+00:00",
        "lat": 59.9490832999999980756911099888384342193603515625,
        "lon": 26.022633299999998968132786103524267673492431640625
    },
    "last_point": {
        "ts": "2026-09-17T13:38:30+00:00",
        "lat": 59.82464999999999832880348549224436283111572265625,
        "lon": 24.8039500000000003865352482534945011138916015625
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 17, 2026 06:03 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 6h 37m
Data Points: 108 AIS positions
Period: 2026-09-17T06:50:34+00:00 to 2026-09-17T13:27:49+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 397.19999999999998863131622783839702606201171875,
    "points_in_zone": 108,
    "first_point": {
        "ts": "2026-09-17T06:50:34+00:00",
        "lat": 59.95363329999999990604919730685651302337646484375,
        "lon": 26.05338330000000013342287275008857250213623046875
    },
    "last_point": {
        "ts": "2026-09-17T13:27:49+00:00",
        "lat": 59.82780000000000342197381542064249515533447265625,
        "lon": 24.83845000000000169393388205207884311676025390625
    }
}

Methodology: 2026.01.18

Sts🛰️✗ Ust-Luga/St. Petersburg Approach

Sep 15, 2026 10:14 UTC 85/100 ▼

Vessel A: IMO 8033089 (SGV FLOT) Russia

Vessel B: Odin (ODIN) RUSSIA

Minimum Distance: 11 meters
Average Distance: 11 meters
Duration: 1h 21m
Period: 2026-09-15T10:14:37+00:00 to 2026-09-15T11:35:38+00:00
Vessel A Avg Speed: 0.0 knots
Vessel B Avg Speed: 0.0 knots
Zone: Ust-Luga/St. Petersburg Approach

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (SGV FLOT and ODIN) maintained close proximity (min 11m, avg 11m) for 81 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 Ust-Luga/St. Petersburg Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	25/25	Min distance 11m, avg 11m
Duration	15/25	Duration 81 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±0m
Isolation	5/10	Isolation data not available
Context	5/5	In 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: 2026-09-15T12:00:02.252975+00:00

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 273458830,
        "imo": 8033089,
        "name": "SGV FLOT",
        "flag": "Russia"
    },
    "vessel_b": {
        "mmsi": 273426280,
        "imo": 9151890,
        "name": "ODIN",
        "flag": "RUSSIA"
    },
    "min_distance_m": 11,
    "avg_distance_m": 11.300000000000000710542735760100185871124267578125,
    "distance_consistency_m": 0.299999999999999988897769753748434595763683319091796875,
    "duration_minutes": 81,
    "overlap_duration_s": 4861,
    "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": "2026-09-15T10:14:37+00:00",
        "end": "2026-09-15T11:35:38+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": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 11m, avg 11m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 81 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b10m"
            },
            "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 (SGV FLOT and ODIN) maintained close proximity (min 11m, avg 11m) for 81 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 Ust-Luga\/St. Petersburg Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 59.8767332999999979392669047228991985321044921875,
            "lon": 30.22059589999999928977558738552033901214599609375
        },
        "time_window": {
            "start_ts": "2026-09-15T10:14:37+00:00",
            "end_ts": "2026-09-15T11:35:38+00:00"
        },
        "searched_at": "2026-09-15T12:00:02.252975+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Sep 15, 2026 10:14 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 1h 21m
Data Points: 2 AIS positions
Period: 2026-09-15T10:14:37+00:00 to 2026-09-15T11:35:38+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 81,
    "points_in_zone": 2,
    "first_point": {
        "ts": "2026-09-15T10:14:37+00:00",
        "lat": 59.8766667000000012421878636814653873443603515625,
        "lon": 30.220600000000001017497197608463466167449951171875
    },
    "last_point": {
        "ts": "2026-09-15T11:35:38+00:00",
        "lat": 59.876699999999999590727384202182292938232421875,
        "lon": 30.22061670000000077607182902283966541290283203125
    }
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Sep 15, 2026 09:20 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 2h 15m
Data Points: 3 AIS positions
Period: 2026-09-15T09:20:39+00:00 to 2026-09-15T11:35:38+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 135,
    "points_in_zone": 3,
    "first_point": {
        "ts": "2026-09-15T09:20:39+00:00",
        "lat": 59.87668330000000338486643158830702304840087890625,
        "lon": 30.220549999999999357669366872869431972503662109375
    },
    "last_point": {
        "ts": "2026-09-15T11:35:38+00:00",
        "lat": 59.876699999999999590727384202182292938232421875,
        "lon": 30.22061670000000077607182902283966541290283203125
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 13, 2026 19:01 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 1h 12m
Data Points: 25 AIS positions
Period: 2026-09-13T19:01:24+00:00 to 2026-09-13T20:13:45+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 72.2999999999999971578290569595992565155029296875,
    "points_in_zone": 25,
    "first_point": {
        "ts": "2026-09-13T19:01:24+00:00",
        "lat": 59.88790329999999784149622428230941295623779296875,
        "lon": 25.943004999999999427018337883055210113525390625
    },
    "last_point": {
        "ts": "2026-09-13T20:13:45+00:00",
        "lat": 59.931454999999999699866748414933681488037109375,
        "lon": 26.225494999999998668727130279876291751861572265625
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 13, 2026 18:02 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 2h 11m
Data Points: 52 AIS positions
Period: 2026-09-13T18:02:44+00:00 to 2026-09-13T20:13:45+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 131,
    "points_in_zone": 52,
    "first_point": {
        "ts": "2026-09-13T18:02:44+00:00",
        "lat": 59.85912330000000025620465748943388462066650390625,
        "lon": 25.711761700000000274712874670512974262237548828125
    },
    "last_point": {
        "ts": "2026-09-13T20:13:45+00:00",
        "lat": 59.931454999999999699866748414933681488037109375,
        "lon": 26.225494999999998668727130279876291751861572265625
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 13, 2026 17:01 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 3h 12m
Data Points: 77 AIS positions
Period: 2026-09-13T17:01:14+00:00 to 2026-09-13T20:13:45+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 192.5,
    "points_in_zone": 77,
    "first_point": {
        "ts": "2026-09-13T17:01:14+00:00",
        "lat": 59.83386169999999992796801961958408355712890625,
        "lon": 25.464715000000001765556589816696941852569580078125
    },
    "last_point": {
        "ts": "2026-09-13T20:13:45+00:00",
        "lat": 59.931454999999999699866748414933681488037109375,
        "lon": 26.225494999999998668727130279876291751861572265625
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 13, 2026 16:00 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 4h 13m
Data Points: 103 AIS positions
Period: 2026-09-13T16:00:25+00:00 to 2026-09-13T20:13:45+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 253.30000000000001136868377216160297393798828125,
    "points_in_zone": 103,
    "first_point": {
        "ts": "2026-09-13T16:00:25+00:00",
        "lat": 59.8077449999999970486896927468478679656982421875,
        "lon": 25.214124999999999232613845379091799259185791015625
    },
    "last_point": {
        "ts": "2026-09-13T20:13:45+00:00",
        "lat": 59.931454999999999699866748414933681488037109375,
        "lon": 26.225494999999998668727130279876291751861572265625
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 13, 2026 15:00 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 5h 13m
Data Points: 130 AIS positions
Period: 2026-09-13T15:00:24+00:00 to 2026-09-13T20:13:45+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 313.3999999999999772626324556767940521240234375,
    "points_in_zone": 130,
    "first_point": {
        "ts": "2026-09-13T15:00:24+00:00",
        "lat": 59.7806982999999974026650306768715381622314453125,
        "lon": 24.96702330000000102927515399642288684844970703125
    },
    "last_point": {
        "ts": "2026-09-13T20:13:45+00:00",
        "lat": 59.931454999999999699866748414933681488037109375,
        "lon": 26.225494999999998668727130279876291751861572265625
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 13, 2026 14:19 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 5h 54m
Data Points: 144 AIS positions
Period: 2026-09-13T14:19:45+00:00 to 2026-09-13T20:13:45+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 354,
    "points_in_zone": 144,
    "first_point": {
        "ts": "2026-09-13T14:19:45+00:00",
        "lat": 59.76556329999999661595211364328861236572265625,
        "lon": 24.8000483000000002675733412615954875946044921875
    },
    "last_point": {
        "ts": "2026-09-13T20:13:45+00:00",
        "lat": 59.931454999999999699866748414933681488037109375,
        "lon": 26.225494999999998668727130279876291751861572265625
    }
}

Methodology: 2026.01.18

Zone Dwell discovered_216

Sep 13, 2026 13:07 UTC 80.0% ▼

Zone: discovered_216
Duration: 1h 43m
Data Points: 38 AIS positions
Period: 2026-09-13T13:07:04+00:00 to 2026-09-13T14:50:05+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_216",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 103,
    "points_in_zone": 38,
    "first_point": {
        "ts": "2026-09-13T13:07:04+00:00",
        "lat": 59.73458329999999705250957049429416656494140625,
        "lon": 24.50217500000000114823706098832190036773681640625
    },
    "last_point": {
        "ts": "2026-09-13T14:50:05+00:00",
        "lat": 59.776641699999998991188476793467998504638671875,
        "lon": 24.924961700000000774934960645623505115509033203125
    }
}

Methodology: 2026.01.18

Ais Gap🛰️✓ Southern Öresund Surveillance Zone

Sep 13, 2026 07:04 UTC 70.0% ▼

Gap Duration: 6h 2m
Last Seen: 2026-09-13T07:04:54+00:00 at 59.5060, 23.1179 (Zone: Southern Öresund Surveillance Zone)
Next Seen: 2026-09-13T13:07:04+00:00 at 59.7346, 24.5022

🛰️ Gap Corroboration

🛰️ Imagery Available

These are snapshots that may corroborate presence during the gap. They do not reconstruct a continuous route.

SAR Imagery (Sentinel-1)

Status: ✓ Snapshot available

SAR snapshot available for review

Scene: S1C_IW_GRDH_1SDV_20260913T044935_20260913T045000_009424_012BE8_C6F5_COG • Time: 2026-09-13T04:49:35.718495Z

SAR coverage thumbnail

VIIRS Thermal Anomaly

Status: ✗ No detections

No VIIRS thermal/light detections in corridor

Searched: 2026-09-13T13:15:01.564367+00:00

Show Raw Evidence JSON

{
    "gap_minutes": 362.19999999999998863131622783839702606201171875,
    "last_seen": {
        "ts": "2026-09-13T07:04:54+00:00",
        "lat": 59.506045000000000300133251585066318511962890625,
        "lon": 23.117889999999999162128005991689860820770263671875,
        "sog": 7.0999999999999996447286321199499070644378662109375,
        "zone_id": "discovered_007"
    },
    "next_seen": {
        "ts": "2026-09-13T13:07:04+00:00",
        "lat": 59.73458329999999705250957049429416656494140625,
        "lon": 24.50217500000000114823706098832190036773681640625,
        "zone_ids": [
            "discovered_216"
        ]
    },
    "gap_enrichment": {
        "status": "done",
        "corridor": {
            "start": {
                "lat": 59.506045000000000300133251585066318511962890625,
                "lon": 23.117889999999999162128005991689860820770263671875,
                "ts": "2026-09-13T07:04:54+00:00"
            },
            "end": {
                "lat": 59.73458329999999705250957049429416656494140625,
                "lon": 24.50217500000000114823706098832190036773681640625,
                "ts": "2026-09-13T13:07:04+00:00"
            },
            "bbox": {
                "min_lat": 59.32586500000000029331204132176935672760009765625,
                "min_lon": 22.761610999999998483644958469085395336151123046875,
                "max_lat": 59.91476300000000065892891143448650836944580078125,
                "max_lon": 24.858453999999998274006429710425436496734619140625
            },
            "buffer_km": 20
        },
        "sar": {
            "status": "snapshot",
            "scene_id": "S1C_IW_GRDH_1SDV_20260913T044935_20260913T045000_009424_012BE8_C6F5_COG",
            "scene_time": "2026-09-13T04:49:35.718495Z",
            "platform": "sentinel-1c",
            "assets": {
                "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1294375_thumbnail_20260913131506.png",
                "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/09\/event_1294375_thumbnail_20260913131506.png",
                "source": "copernicus_dataspace"
            },
            "notes": "SAR snapshot available for review"
        },
        "viirs": {
            "status": "not_found",
            "notes": "No VIIRS thermal\/light detections in corridor"
        },
        "searched_at": "2026-09-13T13:15:01.564367+00:00"
    }
}

Methodology: 2026.01.18

Zone Dwell Southern Öresund Surveillance Zone

Sep 13, 2026 05:48 UTC 80.0% ▼

Zone: Southern Öresund Surveillance Zone
Duration: 1h 16m
Data Points: 27 AIS positions
Period: 2026-09-13T05:48:35+00:00 to 2026-09-13T07:04:54+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_007",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 76.2999999999999971578290569595992565155029296875,
    "points_in_zone": 27,
    "first_point": {
        "ts": "2026-09-13T05:48:35+00:00",
        "lat": 59.456441699999999173087417148053646087646484375,
        "lon": 22.83410500000000098452801466919481754302978515625
    },
    "last_point": {
        "ts": "2026-09-13T07:04:54+00:00",
        "lat": 59.506045000000000300133251585066318511962890625,
        "lon": 23.117889999999999162128005991689860820770263671875
    }
}

Methodology: 2026.01.18

Zone Dwell Southern Öresund Surveillance Zone

Sep 13, 2026 04:58 UTC 80.0% ▼

Zone: Southern Öresund Surveillance Zone
Duration: 2h 6m
Data Points: 28 AIS positions
Period: 2026-09-13T04:58:48+00:00 to 2026-09-13T07:04:54+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_007",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 126.099999999999994315658113919198513031005859375,
    "points_in_zone": 28,
    "first_point": {
        "ts": "2026-09-13T04:58:48+00:00",
        "lat": 59.42562670000000224490577238611876964569091796875,
        "lon": 22.64784829999999971050783642567694187164306640625
    },
    "last_point": {
        "ts": "2026-09-13T07:04:54+00:00",
        "lat": 59.506045000000000300133251585066318511962890625,
        "lon": 23.117889999999999162128005991689860820770263671875
    }
}

Methodology: 2026.01.18

Zone Dwell Southern Öresund Surveillance Zone

Sep 4, 2026 23:01 UTC 80.0% ▼

Zone: Southern Öresund Surveillance Zone
Duration: 1h 44m
Data Points: 27 AIS positions
Period: 2026-09-04T23:01:29+00:00 to 2026-09-05T00:45:37+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_007",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 104.099999999999994315658113919198513031005859375,
    "points_in_zone": 27,
    "first_point": {
        "ts": "2026-09-04T23:01:29+00:00",
        "lat": 59.5724833000000018046193872578442096710205078125,
        "lon": 22.935199999999998254907040973193943500518798828125
    },
    "last_point": {
        "ts": "2026-09-05T00:45:37+00:00",
        "lat": 59.5179499999999990222931955941021442413330078125,
        "lon": 22.5803666999999990139258443377912044525146484375
    }
}

Methodology: 2026.01.18

Zone Dwell Southern Öresund Surveillance Zone

Sep 4, 2026 22:02 UTC 80.0% ▼

Zone: Southern Öresund Surveillance Zone
Duration: 2h 43m
Data Points: 42 AIS positions
Period: 2026-09-04T22:02:08+00:00 to 2026-09-05T00:45:37+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_007",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 163.5,
    "points_in_zone": 42,
    "first_point": {
        "ts": "2026-09-04T22:02:08+00:00",
        "lat": 59.5997832999999985759131959639489650726318359375,
        "lon": 23.143950000000000244426701101474463939666748046875
    },
    "last_point": {
        "ts": "2026-09-05T00:45:37+00:00",
        "lat": 59.5179499999999990222931955941021442413330078125,
        "lon": 22.5803666999999990139258443377912044525146484375
    }
}

Methodology: 2026.01.18

Zone Dwell Southern Öresund Surveillance Zone

Sep 4, 2026 21:01 UTC 80.0% ▼

Zone: Southern Öresund Surveillance Zone
Duration: 3h 43m
Data Points: 68 AIS positions
Period: 2026-09-04T21:01:47+00:00 to 2026-09-05T00:45:37+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_007",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 223.80000000000001136868377216160297393798828125,
    "points_in_zone": 68,
    "first_point": {
        "ts": "2026-09-04T21:01:47+00:00",
        "lat": 59.62599999999999766941982670687139034271240234375,
        "lon": 23.354233300000000639329300611279904842376708984375
    },
    "last_point": {
        "ts": "2026-09-05T00:45:37+00:00",
        "lat": 59.5179499999999990222931955941021442413330078125,
        "lon": 22.5803666999999990139258443377912044525146484375
    }
}

Methodology: 2026.01.18

Zone Dwell Southern Öresund Surveillance Zone

Sep 4, 2026 20:08 UTC 80.0% ▼

Zone: Southern Öresund Surveillance Zone
Duration: 4h 37m
Data Points: 92 AIS positions
Period: 2026-09-04T20:08:37+00:00 to 2026-09-05T00:45:37+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_007",
    "zone_name": "Southern \u00d6resund Surveillance Zone",
    "dwell_minutes": 277,
    "points_in_zone": 92,
    "first_point": {
        "ts": "2026-09-04T20:08:37+00:00",
        "lat": 59.65251669999999961646608426235616207122802734375,
        "lon": 23.531433299999999775309333926998078823089599609375
    },
    "last_point": {
        "ts": "2026-09-05T00:45:37+00:00",
        "lat": 59.5179499999999990222931955941021442413330078125,
        "lon": 22.5803666999999990139258443377912044525146484375
    }
}

Methodology: 2026.01.18

Ais Gap🛰️✗ discovered_216

Sep 4, 2026 14:34 UTC 70.0% ▼

Gap Duration: 5h 18m
Last Seen: 2026-09-04T14:34:07+00:00 at 59.8074, 24.6336 (Zone: discovered_216)
Next Seen: 2026-09-04T19:52:27+00:00 at 59.6617, 23.5863

🛰️ Gap Corroboration

✗ No Imagery

These are snapshots that may corroborate presence during the gap. They do not reconstruct a continuous route.

SAR Imagery (Sentinel-1)

Status: ✗ No SAR coverage

No Sentinel-1 scenes covering corridor and time window

VIIRS Thermal Anomaly

Status: ✗ No detections

No VIIRS thermal/light detections in corridor

Searched: 2026-09-04T20:15:01.879285+00:00

Show Raw Evidence JSON

{
    "gap_minutes": 318.30000000000001136868377216160297393798828125,
    "last_seen": {
        "ts": "2026-09-04T14:34:07+00:00",
        "lat": 59.8074332999999995763573679141700267791748046875,
        "lon": 24.6336332999999996218321030028164386749267578125,
        "sog": 6,
        "zone_id": "discovered_216"
    },
    "next_seen": {
        "ts": "2026-09-04T19:52:27+00:00",
        "lat": 59.66173330000000163408913067542016506195068359375,
        "lon": 23.586283300000001617036105017177760601043701171875
    },
    "gap_enrichment": {
        "status": "not_found",
        "corridor": {
            "start": {
                "lat": 59.8074332999999995763573679141700267791748046875,
                "lon": 24.6336332999999996218321030028164386749267578125,
                "ts": "2026-09-04T14:34:07+00:00"
            },
            "end": {
                "lat": 59.66173330000000163408913067542016506195068359375,
                "lon": 23.586283300000001617036105017177760601043701171875,
                "ts": "2026-09-04T19:52:27+00:00"
            },
            "bbox": {
                "min_lat": 59.48155299999999812143869348801672458648681640625,
                "min_lon": 23.228787000000000517729858984239399433135986328125,
                "max_lat": 59.98761300000000318277670885436236858367919921875,
                "max_lon": 24.991129000000000814907252788543701171875
            },
            "buffer_km": 20
        },
        "sar": {
            "status": "not_found",
            "notes": "No Sentinel-1 scenes covering corridor and time window"
        },
        "viirs": {
            "status": "not_found",
            "notes": "No VIIRS thermal\/light detections in corridor"
        },
        "searched_at": "2026-09-04T20:15:01.879285+00:00"
    }
}

Methodology: 2026.01.18

Zone Dwell discovered_216

Sep 4, 2026 13:13 UTC 80.0% ▼

Zone: discovered_216
Duration: 1h 20m
Data Points: 25 AIS positions
Period: 2026-09-04T13:13:37+00:00 to 2026-09-04T14:34:07+00:00

Show Raw Evidence JSON

{
    "zone_id": "discovered_216",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 80.5,
    "points_in_zone": 25,
    "first_point": {
        "ts": "2026-09-04T13:13:37+00:00",
        "lat": 59.8334832999999974845195538364350795745849609375,
        "lon": 24.90384999999999848796505830250680446624755859375
    },
    "last_point": {
        "ts": "2026-09-04T14:34:07+00:00",
        "lat": 59.8074332999999995763573679141700267791748046875,
        "lon": 24.6336332999999996218321030028164386749267578125
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 4, 2026 12:00 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 1h 41m
Data Points: 38 AIS positions
Period: 2026-09-04T12:00:58+00:00 to 2026-09-04T13:42:37+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 101.7000000000000028421709430404007434844970703125,
    "points_in_zone": 38,
    "first_point": {
        "ts": "2026-09-04T12:00:58+00:00",
        "lat": 59.85844999999999771489456179551780223846435546875,
        "lon": 25.154033299999998263274392229504883289337158203125
    },
    "last_point": {
        "ts": "2026-09-04T13:42:37+00:00",
        "lat": 59.82411669999999759284037281759083271026611328125,
        "lon": 24.80553330000000045174601837061345577239990234375
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 4, 2026 11:01 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 2h 41m
Data Points: 58 AIS positions
Period: 2026-09-04T11:01:06+00:00 to 2026-09-04T13:42:37+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 161.5,
    "points_in_zone": 58,
    "first_point": {
        "ts": "2026-09-04T11:01:06+00:00",
        "lat": 59.87703330000000079280653153546154499053955078125,
        "lon": 25.365866700000001543457983643747866153717041015625
    },
    "last_point": {
        "ts": "2026-09-04T13:42:37+00:00",
        "lat": 59.82411669999999759284037281759083271026611328125,
        "lon": 24.80553330000000045174601837061345577239990234375
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 4, 2026 10:01 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 3h 40m
Data Points: 77 AIS positions
Period: 2026-09-04T10:01:56+00:00 to 2026-09-04T13:42:37+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 220.69999999999998863131622783839702606201171875,
    "points_in_zone": 77,
    "first_point": {
        "ts": "2026-09-04T10:01:56+00:00",
        "lat": 59.89271670000000113986970973201096057891845703125,
        "lon": 25.578399999999998470912032644264400005340576171875
    },
    "last_point": {
        "ts": "2026-09-04T13:42:37+00:00",
        "lat": 59.82411669999999759284037281759083271026611328125,
        "lon": 24.80553330000000045174601837061345577239990234375
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 4, 2026 09:03 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 4h 39m
Data Points: 98 AIS positions
Period: 2026-09-04T09:03:07+00:00 to 2026-09-04T13:42:37+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 279.5,
    "points_in_zone": 98,
    "first_point": {
        "ts": "2026-09-04T09:03:07+00:00",
        "lat": 59.91751670000000018490027287043631076812744140625,
        "lon": 25.788316699999999315195964300073683261871337890625
    },
    "last_point": {
        "ts": "2026-09-04T13:42:37+00:00",
        "lat": 59.82411669999999759284037281759083271026611328125,
        "lon": 24.80553330000000045174601837061345577239990234375
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 4, 2026 08:15 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 5h 27m
Data Points: 116 AIS positions
Period: 2026-09-04T08:15:17+00:00 to 2026-09-04T13:42:37+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 327.30000000000001136868377216160297393798828125,
    "points_in_zone": 116,
    "first_point": {
        "ts": "2026-09-04T08:15:17+00:00",
        "lat": 59.93724999999999880628820392303168773651123046875,
        "lon": 25.94548329999999936035237624309957027435302734375
    },
    "last_point": {
        "ts": "2026-09-04T13:42:37+00:00",
        "lat": 59.82411669999999759284037281759083271026611328125,
        "lon": 24.80553330000000045174601837061345577239990234375
    }
}

Methodology: 2026.01.18

Zone Dwell Baltic Exit/Tallinn Approach

Sep 4, 2026 07:22 UTC 80.0% ▼

Zone: Baltic Exit/Tallinn Approach
Duration: 6h 19m
Data Points: 118 AIS positions
Period: 2026-09-04T07:22:46+00:00 to 2026-09-04T13:42:37+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_baltic_transit",
    "zone_name": "Baltic Exit\/Tallinn Approach",
    "dwell_minutes": 379.8999999999999772626324556767940521240234375,
    "points_in_zone": 118,
    "first_point": {
        "ts": "2026-09-04T07:22:46+00:00",
        "lat": 59.9611000000000018417267710901796817779541015625,
        "lon": 26.120200000000000528643795405514538288116455078125
    },
    "last_point": {
        "ts": "2026-09-04T13:42:37+00:00",
        "lat": 59.82411669999999759284037281759083271026611328125,
        "lon": 24.80553330000000045174601837061345577239990234375
    }
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Sep 1, 2026 13:01 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 1h 55m
Data Points: 17 AIS positions
Period: 2026-09-01T13:01:05+00:00 to 2026-09-01T14:56:14+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 115.2000000000000028421709430404007434844970703125,
    "points_in_zone": 17,
    "first_point": {
        "ts": "2026-09-01T13:01:05+00:00",
        "lat": 59.8768783000000013316821423359215259552001953125,
        "lon": 30.2181633000000005040419637225568294525146484375
    },
    "last_point": {
        "ts": "2026-09-01T14:56:14+00:00",
        "lat": 59.8779899999999969395503285340964794158935546875,
        "lon": 30.219474999999999198507794062606990337371826171875
    }
}

Methodology: 2026.01.18

Loiter Ust-Luga/St. Petersburg Approach

Sep 1, 2026 13:01 UTC 75.0% ▼

Duration: 1h 55m
Radius: 136 meters
Data Points: 17 AIS positions
Centroid: 59.8769, 30.2182
Zone: Ust-Luga/St. Petersburg Approach

Show Raw Evidence JSON

{
    "radius_m": 136,
    "duration_minutes": 115.2000000000000028421709430404007434844970703125,
    "points": 17,
    "centroid": {
        "lat": 59.876943329411773220272152684628963470458984375,
        "lon": 30.2182265647058869717511697672307491302490234375
    },
    "bbox": {
        "min_lat": 59.87686000000000063892002799548208713531494140625,
        "min_lon": 30.218108300000000809859557193703949451446533203125,
        "max_lat": 59.8779899999999969395503285340964794158935546875,
        "max_lon": 30.219474999999999198507794062606990337371826171875
    },
    "zone_id": "russia_ust_luga_approach"
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Sep 1, 2026 12:05 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 2h 50m
Data Points: 23 AIS positions
Period: 2026-09-01T12:05:43+00:00 to 2026-09-01T14:56:14+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 170.5,
    "points_in_zone": 23,
    "first_point": {
        "ts": "2026-09-01T12:05:43+00:00",
        "lat": 59.8768917000000016059857443906366825103759765625,
        "lon": 30.21811999999999898136593401432037353515625
    },
    "last_point": {
        "ts": "2026-09-01T14:56:14+00:00",
        "lat": 59.8779899999999969395503285340964794158935546875,
        "lon": 30.219474999999999198507794062606990337371826171875
    }
}

Methodology: 2026.01.18

Loiter Ust-Luga/St. Petersburg Approach

Sep 1, 2026 12:05 UTC 75.0% ▼

Duration: 2h 50m
Radius: 138 meters
Data Points: 23 AIS positions
Centroid: 59.8769, 30.2182
Zone: Ust-Luga/St. Petersburg Approach

Show Raw Evidence JSON

{
    "radius_m": 138,
    "duration_minutes": 170.5,
    "points": 23,
    "centroid": {
        "lat": 59.8769297086956413522784714587032794952392578125,
        "lon": 30.21820151739130011492306948639452457427978515625
    },
    "bbox": {
        "min_lat": 59.87686000000000063892002799548208713531494140625,
        "min_lon": 30.218108300000000809859557193703949451446533203125,
        "max_lat": 59.8779899999999969395503285340964794158935546875,
        "max_lon": 30.219474999999999198507794062606990337371826171875
    },
    "zone_id": "russia_ust_luga_approach"
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Sep 1, 2026 11:51 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 3h 4m
Data Points: 26 AIS positions
Period: 2026-09-01T11:51:44+00:00 to 2026-09-01T14:56:14+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 184.5,
    "points_in_zone": 26,
    "first_point": {
        "ts": "2026-09-01T11:51:44+00:00",
        "lat": 59.87687170000000236314008361659944057464599609375,
        "lon": 30.218129999999998602788764401338994503021240234375
    },
    "last_point": {
        "ts": "2026-09-01T14:56:14+00:00",
        "lat": 59.8779899999999969395503285340964794158935546875,
        "lon": 30.219474999999999198507794062606990337371826171875
    }
}

Methodology: 2026.01.18

Loiter Ust-Luga/St. Petersburg Approach

Sep 1, 2026 11:51 UTC 75.0% ▼

Duration: 3h 4m
Radius: 139 meters
Data Points: 26 AIS positions
Centroid: 59.8769, 30.2182
Zone: Ust-Luga/St. Petersburg Approach

Show Raw Evidence JSON

{
    "radius_m": 138.900000000000005684341886080801486968994140625,
    "duration_minutes": 184.5,
    "points": 26,
    "centroid": {
        "lat": 59.87692314230768175775665440596640110015869140625,
        "lon": 30.218193011538456715925349271856248378753662109375
    },
    "bbox": {
        "min_lat": 59.87686000000000063892002799548208713531494140625,
        "min_lon": 30.218108300000000809859557193703949451446533203125,
        "max_lat": 59.8779899999999969395503285340964794158935546875,
        "max_lon": 30.219474999999999198507794062606990337371826171875
    },
    "zone_id": "russia_ust_luga_approach"
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Sep 1, 2026 08:25 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 6h 30m
Data Points: 27 AIS positions
Period: 2026-09-01T08:25:25+00:00 to 2026-09-01T14:56:14+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 390.80000000000001136868377216160297393798828125,
    "points_in_zone": 27,
    "first_point": {
        "ts": "2026-09-01T08:25:25+00:00",
        "lat": 59.8768682999999981575456331484019756317138671875,
        "lon": 30.218095000000001704165697447024285793304443359375
    },
    "last_point": {
        "ts": "2026-09-01T14:56:14+00:00",
        "lat": 59.8779899999999969395503285340964794158935546875,
        "lon": 30.219474999999999198507794062606990337371826171875
    }
}

Methodology: 2026.01.18

Loiter Ust-Luga/St. Petersburg Approach

Sep 1, 2026 08:25 UTC 75.0% ▼

Duration: 6h 30m
Radius: 139 meters
Data Points: 27 AIS positions
Centroid: 59.8769, 30.2182
Zone: Ust-Luga/St. Petersburg Approach

Show Raw Evidence JSON

{
    "radius_m": 139.19999999999998863131622783839702606201171875,
    "duration_minutes": 390.80000000000001136868377216160297393798828125,
    "points": 27,
    "centroid": {
        "lat": 59.87692111111109483090331195853650569915771484375,
        "lon": 30.2181893814814799270607181824743747711181640625
    },
    "bbox": {
        "min_lat": 59.87686000000000063892002799548208713531494140625,
        "min_lon": 30.218095000000001704165697447024285793304443359375,
        "max_lat": 59.8779899999999969395503285340964794158935546875,
        "max_lon": 30.219474999999999198507794062606990337371826171875
    },
    "zone_id": "russia_ust_luga_approach"
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Aug 31, 2026 18:08 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 2h 31m
Data Points: 3 AIS positions
Period: 2026-08-31T18:08:01+00:00 to 2026-08-31T20:39:45+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 151.69999999999998863131622783839702606201171875,
    "points_in_zone": 3,
    "first_point": {
        "ts": "2026-08-31T18:08:01+00:00",
        "lat": 59.87691670000000243589965975843369960784912109375,
        "lon": 30.218083299999999979945641825906932353973388671875
    },
    "last_point": {
        "ts": "2026-08-31T20:39:45+00:00",
        "lat": 59.87693329999999747315087006427347660064697265625,
        "lon": 30.21809999999999973852027324028313159942626953125
    }
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Aug 31, 2026 17:49 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 2h 50m
Data Points: 6 AIS positions
Period: 2026-08-31T17:49:31+00:00 to 2026-08-31T20:39:45+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 170.19999999999998863131622783839702606201171875,
    "points_in_zone": 6,
    "first_point": {
        "ts": "2026-08-31T17:49:31+00:00",
        "lat": 59.87691670000000243589965975843369960784912109375,
        "lon": 30.218116699999999497094904654659330844879150390625
    },
    "last_point": {
        "ts": "2026-08-31T20:39:45+00:00",
        "lat": 59.87693329999999747315087006427347660064697265625,
        "lon": 30.21809999999999973852027324028313159942626953125
    }
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Aug 31, 2026 14:46 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 5h 53m
Data Points: 7 AIS positions
Period: 2026-08-31T14:46:10+00:00 to 2026-08-31T20:39:45+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 353.6000000000000227373675443232059478759765625,
    "points_in_zone": 7,
    "first_point": {
        "ts": "2026-08-31T14:46:10+00:00",
        "lat": 59.87689999999999912461134954355657100677490234375,
        "lon": 30.21809999999999973852027324028313159942626953125
    },
    "last_point": {
        "ts": "2026-08-31T20:39:45+00:00",
        "lat": 59.87693329999999747315087006427347660064697265625,
        "lon": 30.21809999999999973852027324028313159942626953125
    }
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Aug 31, 2026 13:14 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 4h 55m
Data Points: 9 AIS positions
Period: 2026-08-31T13:14:50+00:00 to 2026-08-31T18:10:24+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 295.6000000000000227373675443232059478759765625,
    "points_in_zone": 9,
    "first_point": {
        "ts": "2026-08-31T13:14:50+00:00",
        "lat": 59.87689999999999912461134954355657100677490234375,
        "lon": 30.21809999999999973852027324028313159942626953125
    },
    "last_point": {
        "ts": "2026-08-31T18:10:24+00:00",
        "lat": 59.87693329999999747315087006427347660064697265625,
        "lon": 30.218050000000001631406121305190026760101318359375
    }
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Aug 31, 2026 12:49 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 5h 21m
Data Points: 10 AIS positions
Period: 2026-08-31T12:49:20+00:00 to 2026-08-31T18:10:24+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 321.1000000000000227373675443232059478759765625,
    "points_in_zone": 10,
    "first_point": {
        "ts": "2026-08-31T12:49:20+00:00",
        "lat": 59.87686670000000077607182902283966541290283203125,
        "lon": 30.21809999999999973852027324028313159942626953125
    },
    "last_point": {
        "ts": "2026-08-31T18:10:24+00:00",
        "lat": 59.87693329999999747315087006427347660064697265625,
        "lon": 30.218050000000001631406121305190026760101318359375
    }
}

Methodology: 2026.01.18

Loiter Ust-Luga/St. Petersburg Approach

Aug 31, 2026 12:49 UTC 75.0% ▼

Duration: 5h 21m
Radius: 4 meters
Data Points: 10 AIS positions
Centroid: 59.8769, 30.2181
Zone: Ust-Luga/St. Petersburg Approach

Show Raw Evidence JSON

{
    "radius_m": 4.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 321.1000000000000227373675443232059478759765625,
    "points": 10,
    "centroid": {
        "lat": 59.87690166999999519248376600444316864013671875,
        "lon": 30.21809166999999973768353811465203762054443359375
    },
    "bbox": {
        "min_lat": 59.87686670000000077607182902283966541290283203125,
        "min_lon": 30.218050000000001631406121305190026760101318359375,
        "max_lat": 59.87693329999999747315087006427347660064697265625,
        "max_lon": 30.218116699999999497094904654659330844879150390625
    },
    "zone_id": "russia_ust_luga_approach"
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Aug 31, 2026 11:02 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 6h 37m
Data Points: 9 AIS positions
Period: 2026-08-31T11:21:39+00:00 to 2026-08-31T17:59:01+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 397.3999999999999772626324556767940521240234375,
    "points_in_zone": 9,
    "first_point": {
        "ts": "2026-08-31T11:21:39+00:00",
        "lat": 59.876883300000002918750396929681301116943359375,
        "lon": 30.21809999999999973852027324028313159942626953125
    },
    "last_point": {
        "ts": "2026-08-31T17:59:01+00:00",
        "lat": 59.87689999999999912461134954355657100677490234375,
        "lon": 30.218083299999999979945641825906932353973388671875
    }
}

Methodology: 2026.01.18

Loiter Ust-Luga/St. Petersburg Approach

Aug 31, 2026 11:02 UTC 75.0% ▼

Duration: 3h 43m
Radius: 3 meters
Data Points: 10 AIS positions
Centroid: 59.8769, 30.2181
Zone: Ust-Luga/St. Petersburg Approach

Show Raw Evidence JSON

{
    "radius_m": 3.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 223.19999999999998863131622783839702606201171875,
    "points": 10,
    "centroid": {
        "lat": 59.8768949999999904321157373487949371337890625,
        "lon": 30.21809667000000132475179270841181278228759765625
    },
    "bbox": {
        "min_lat": 59.87686670000000077607182902283966541290283203125,
        "min_lon": 30.21806670000000138998075271956622600555419921875,
        "max_lat": 59.87691670000000243589965975843369960784912109375,
        "max_lon": 30.218116699999999497094904654659330844879150390625
    },
    "zone_id": "russia_ust_luga_approach"
}

Methodology: 2026.01.18

Sts Ust-Luga/St. Petersburg Approach

Aug 31, 2026 10:17 UTC 58/100 ▼

Vessel A: MMSI 273353550 (EUROSTAR 4 MARIA) RUSSIA

Vessel B: IMO 8033089 (SGV FLOT) Russia

Minimum Distance: 285 meters
Average Distance: 322 meters
Duration: 43 minutes
Period: 2026-08-31T10:31:05+00:00 to 2026-08-31T11:14:34+00:00
Vessel A Avg Speed: 0.3 knots
Vessel B Avg Speed: 0.0 knots
Zone: Ust-Luga/St. Petersburg Approach

Confidence Analysis

Score: 58/100

Low-confidence STS candidate - may warrant review. Two tankers (EUROSTAR 4 MARIA and SGV FLOT) maintained close proximity (min 285m, avg 322m) for 44 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Ust-Luga/St. Petersburg Approach, a known STS activity area.

View scoring breakdown

Factor	Score	Detail
Distance Tightness	15/25	Min distance 285m, avg 322m
Duration	5/25	Duration 44 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	8/15	Distance variance ±72m
Isolation	5/10	Isolation data not available
Context	5/5	In monitored zone: Ust-Luga/St. Petersburg Approach

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 273353550,
        "name": "EUROSTAR 4 MARIA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273458830,
        "imo": 8033089,
        "name": "SGV FLOT",
        "flag": "Russia"
    },
    "min_distance_m": 284.69999999999998863131622783839702606201171875,
    "avg_distance_m": 321.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 72.099999999999994315658113919198513031005859375,
    "duration_minutes": 43.5,
    "overlap_duration_s": 2609,
    "speed_a_avg": 0.2800000000000000266453525910037569701671600341796875,
    "speed_a_std": 0.2200000000000000011102230246251565404236316680908203125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.2800000000000000266453525910037569701671600341796875,
            "max_sog": 0.5
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-31T10:31:05+00:00",
        "end": "2026-08-31T11:14:34+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "score": {
        "value": 58,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 285m, avg 322m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 44 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b172m"
            },
            "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": "Low-confidence STS candidate - may warrant review. Two tankers (EUROSTAR 4 MARIA and SGV FLOT) maintained close proximity (min 285m, avg 322m) for 44 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Ust-Luga\/St. Petersburg Approach, a known STS activity area."
    }
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Aug 31, 2026 10:17 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 4h 29m
Data Points: 20 AIS positions
Period: 2026-08-31T10:17:09+00:00 to 2026-08-31T14:46:10+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 269,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-08-31T10:17:09+00:00",
        "lat": 59.876883300000002918750396929681301116943359375,
        "lon": 30.218116699999999497094904654659330844879150390625
    },
    "last_point": {
        "ts": "2026-08-31T14:46:10+00:00",
        "lat": 59.87689999999999912461134954355657100677490234375,
        "lon": 30.21809999999999973852027324028313159942626953125
    }
}

Methodology: 2026.01.18

Loiter Ust-Luga/St. Petersburg Approach

Aug 31, 2026 10:17 UTC 75.0% ▼

Duration: 4h 29m
Radius: 3 meters
Data Points: 20 AIS positions
Centroid: 59.8769, 30.2181
Zone: Ust-Luga/St. Petersburg Approach

Show Raw Evidence JSON

{
    "radius_m": 3.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 269,
    "points": 20,
    "centroid": {
        "lat": 59.8768949950000006765549187548458576202392578125,
        "lon": 30.21809499999999815145201864652335643768310546875
    },
    "bbox": {
        "min_lat": 59.87686670000000077607182902283966541290283203125,
        "min_lon": 30.21806670000000138998075271956622600555419921875,
        "max_lat": 59.87691670000000243589965975843369960784912109375,
        "max_lon": 30.218116699999999497094904654659330844879150390625
    },
    "zone_id": "russia_ust_luga_approach"
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Aug 31, 2026 09:00 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 5h 46m
Data Points: 32 AIS positions
Period: 2026-08-31T09:00:05+00:00 to 2026-08-31T14:46:10+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 346.1000000000000227373675443232059478759765625,
    "points_in_zone": 32,
    "first_point": {
        "ts": "2026-08-31T09:00:05+00:00",
        "lat": 59.876883300000002918750396929681301116943359375,
        "lon": 30.218116699999999497094904654659330844879150390625
    },
    "last_point": {
        "ts": "2026-08-31T14:46:10+00:00",
        "lat": 59.87689999999999912461134954355657100677490234375,
        "lon": 30.21809999999999973852027324028313159942626953125
    }
}

Methodology: 2026.01.18

Loiter Ust-Luga/St. Petersburg Approach

Aug 31, 2026 09:00 UTC 75.0% ▼

Duration: 5h 46m
Radius: 3 meters
Data Points: 32 AIS positions
Centroid: 59.8769, 30.2181
Zone: Ust-Luga/St. Petersburg Approach

Show Raw Evidence JSON

{
    "radius_m": 3.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 346.1000000000000227373675443232059478759765625,
    "points": 32,
    "centroid": {
        "lat": 59.87689374374999573547029285691678524017333984375,
        "lon": 30.218100003125012875671018264256417751312255859375
    },
    "bbox": {
        "min_lat": 59.87686670000000077607182902283966541290283203125,
        "min_lon": 30.21806670000000138998075271956622600555419921875,
        "max_lat": 59.87691670000000243589965975843369960784912109375,
        "max_lon": 30.218133300000001639773472561500966548919677734375
    },
    "zone_id": "russia_ust_luga_approach"
}

Methodology: 2026.01.18

Sts🛰️✗ Ust-Luga/St. Petersburg Approach

Aug 31, 2026 08:28 UTC 85/100 ▼

Vessel A: Abrau (ABRAU) RUSSIA

Vessel B: IMO 8033089 (SGV FLOT) Russia

Minimum Distance: 121 meters
Average Distance: 123 meters
Duration: 1h 30m
Period: 2026-08-31T08:28:46+00:00 to 2026-08-31T09:59:36+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.0 knots
Zone: Ust-Luga/St. Petersburg Approach

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (ABRAU and SGV FLOT) maintained close proximity (min 121m, avg 123m) for 91 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 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

Factor	Score	Detail
Distance Tightness	20/25	Min distance 121m, avg 123m
Duration	20/25	Duration 91 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±2m
Isolation	5/10	Isolation data not available
Context	5/5	In 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: 2026-08-31T13:30:01.460286+00:00

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 273368990,
        "imo": 9422964,
        "name": "ABRAU",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273458830,
        "imo": 8033089,
        "name": "SGV FLOT",
        "flag": "Russia"
    },
    "min_distance_m": 121.2000000000000028421709430404007434844970703125,
    "avg_distance_m": 123.2000000000000028421709430404007434844970703125,
    "distance_consistency_m": 1.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 90.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 5450,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-31T08:28:46+00:00",
        "end": "2026-08-31T09:59:36+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 121m, avg 123m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 91 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: Ust-Luga\/St. Petersburg Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ABRAU and SGV FLOT) maintained close proximity (min 121m, avg 123m) for 91 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 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": 59.87685019999999980200300342403352260589599609375,
            "lon": 30.219193300000000590443960390985012054443359375
        },
        "time_window": {
            "start_ts": "2026-08-31T08:28:46+00:00",
            "end_ts": "2026-08-31T09:59:36+00:00"
        },
        "searched_at": "2026-08-31T13:30:01.460286+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Aug 31, 2026 08:28 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 6h 18m
Data Points: 38 AIS positions
Period: 2026-08-31T08:28:06+00:00 to 2026-08-31T14:46:10+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 378.1000000000000227373675443232059478759765625,
    "points_in_zone": 38,
    "first_point": {
        "ts": "2026-08-31T08:28:06+00:00",
        "lat": 59.87689999999999912461134954355657100677490234375,
        "lon": 30.21809999999999973852027324028313159942626953125
    },
    "last_point": {
        "ts": "2026-08-31T14:46:10+00:00",
        "lat": 59.87689999999999912461134954355657100677490234375,
        "lon": 30.21809999999999973852027324028313159942626953125
    }
}

Methodology: 2026.01.18

Loiter Ust-Luga/St. Petersburg Approach

Aug 31, 2026 08:28 UTC 75.0% ▼

Duration: 6h 18m
Radius: 3 meters
Data Points: 38 AIS positions
Centroid: 59.8769, 30.2181
Zone: Ust-Luga/St. Petersburg Approach

Show Raw Evidence JSON

{
    "radius_m": 3.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 378.1000000000000227373675443232059478759765625,
    "points": 38,
    "centroid": {
        "lat": 59.87689429210526981250950484536588191986083984375,
        "lon": 30.21810044210527479435768327675759792327880859375
    },
    "bbox": {
        "min_lat": 59.87686670000000077607182902283966541290283203125,
        "min_lon": 30.21806670000000138998075271956622600555419921875,
        "max_lat": 59.87691670000000243589965975843369960784912109375,
        "max_lon": 30.218133300000001639773472561500966548919677734375
    },
    "zone_id": "russia_ust_luga_approach"
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Aug 31, 2026 07:28 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 6h 17m
Data Points: 38 AIS positions
Period: 2026-08-31T07:28:41+00:00 to 2026-08-31T13:46:31+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 377.80000000000001136868377216160297393798828125,
    "points_in_zone": 38,
    "first_point": {
        "ts": "2026-08-31T07:28:41+00:00",
        "lat": 59.87691670000000243589965975843369960784912109375,
        "lon": 30.218083299999999979945641825906932353973388671875
    },
    "last_point": {
        "ts": "2026-08-31T13:46:31+00:00",
        "lat": 59.87689999999999912461134954355657100677490234375,
        "lon": 30.21809999999999973852027324028313159942626953125
    }
}

Methodology: 2026.01.18

Loiter Ust-Luga/St. Petersburg Approach

Aug 31, 2026 07:28 UTC 75.0% ▼

Duration: 6h 17m
Radius: 3 meters
Data Points: 38 AIS positions
Centroid: 59.8769, 30.2181
Zone: Ust-Luga/St. Petersburg Approach

Show Raw Evidence JSON

{
    "radius_m": 3.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 377.80000000000001136868377216160297393798828125,
    "points": 38,
    "centroid": {
        "lat": 59.87689473157894326504901982843875885009765625,
        "lon": 30.21810000263159423639081069268286228179931640625
    },
    "bbox": {
        "min_lat": 59.87686670000000077607182902283966541290283203125,
        "min_lon": 30.21806670000000138998075271956622600555419921875,
        "max_lat": 59.87691670000000243589965975843369960784912109375,
        "max_lon": 30.218133300000001639773472561500966548919677734375
    },
    "zone_id": "russia_ust_luga_approach"
}

Methodology: 2026.01.18

Sts🛰️✗ Ust-Luga/St. Petersburg Approach

Aug 31, 2026 06:34 UTC 90/100 ▼

Vessel A: Abrau (ABRAU) RUSSIA

Vessel B: IMO 8033089 (SGV FLOT) Russia

Minimum Distance: 121 meters
Average Distance: 123 meters
Duration: 3h 24m
Period: 2026-08-31T06:34:57+00:00 to 2026-08-31T09:59:36+00:00
Vessel A Avg Speed: 0.1 knots
Vessel B Avg Speed: 0.0 knots
Zone: Ust-Luga/St. Petersburg Approach

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (ABRAU and SGV FLOT) maintained close proximity (min 121m, avg 123m) for 205 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 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

Factor	Score	Detail
Distance Tightness	20/25	Min distance 121m, avg 123m
Duration	25/25	Duration 205 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	15/15	Distance variance ±2m
Isolation	5/10	Isolation data not available
Context	5/5	In 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: 2026-08-31T13:15:07.402238+00:00

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 273368990,
        "imo": 9422964,
        "name": "ABRAU",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273458830,
        "imo": 8033089,
        "name": "SGV FLOT",
        "flag": "Russia"
    },
    "min_distance_m": 120.7000000000000028421709430404007434844970703125,
    "avg_distance_m": 122.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 204.69999999999998863131622783839702606201171875,
    "overlap_duration_s": 12279,
    "speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-31T06:34:57+00:00",
        "end": "2026-08-31T09:59:36+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "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 121m, avg 123m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 205 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: Ust-Luga\/St. Petersburg Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (ABRAU and SGV FLOT) maintained close proximity (min 121m, avg 123m) for 205 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 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": 59.8768625000000014324541552923619747161865234375,
            "lon": 30.21919199999999960937202558852732181549072265625
        },
        "time_window": {
            "start_ts": "2026-08-31T06:34:57+00:00",
            "end_ts": "2026-08-31T09:59:36+00:00"
        },
        "searched_at": "2026-08-31T13:15:07.402238+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Sts🛰️✗ Ust-Luga/St. Petersburg Approach

Aug 31, 2026 06:13 UTC 82/100 ▼

Vessel A: MMSI 273353550 (EUROSTAR 4 MARIA) RUSSIA

Vessel B: IMO 8033089 (SGV FLOT) Russia

Minimum Distance: 280 meters
Average Distance: 300 meters
Duration: 5 hours
Period: 2026-08-31T06:13:45+00:00 to 2026-08-31T11:14:34+00:00
Vessel A Avg Speed: 0.4 knots
Vessel B Avg Speed: 0.0 knots
Zone: Ust-Luga/St. Petersburg Approach

Confidence Analysis

Score: 82/100

High-confidence STS candidate. Two tankers (EUROSTAR 4 MARIA and SGV FLOT) maintained close proximity (min 280m, avg 300m) for 301 minutes. Both vessels were slow-moving (avg speeds 0.4 and 0.0 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

Factor	Score	Detail
Distance Tightness	15/25	Min distance 280m, avg 300m
Duration	25/25	Duration 301 minutes
Speed Stability	20/20	both nearly stationary; very stable speeds
Distance Consistency	12/15	Distance variance ±49m
Isolation	5/10	Isolation data not available
Context	5/5	In 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: 2026-08-31T12:15:02.065609+00:00

Show Raw Evidence JSON

{
    "vessel_a": {
        "mmsi": 273353550,
        "name": "EUROSTAR 4 MARIA",
        "flag": "RUSSIA"
    },
    "vessel_b": {
        "mmsi": 273458830,
        "imo": 8033089,
        "name": "SGV FLOT",
        "flag": "Russia"
    },
    "min_distance_m": 280.19999999999998863131622783839702606201171875,
    "avg_distance_m": 300.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 48.60000000000000142108547152020037174224853515625,
    "duration_minutes": 300.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 18049,
    "speed_a_avg": 0.39000000000000001332267629550187848508358001708984375,
    "speed_a_std": 0.25,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.39000000000000001332267629550187848508358001708984375,
            "max_sog": 0.8000000000000000444089209850062616169452667236328125
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-31T06:13:45+00:00",
        "end": "2026-08-31T11:14:34+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "score": {
        "value": 82,
        "components": {
            "distance_tightness": {
                "score": 15,
                "max": 25,
                "detail": "Min distance 280m, avg 300m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 301 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b149m"
            },
            "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 (EUROSTAR 4 MARIA and SGV FLOT) maintained close proximity (min 280m, avg 300m) for 301 minutes. Both vessels were slow-moving (avg speeds 0.4 and 0.0 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": 59.87702949999999901820046943612396717071533203125,
            "lon": 30.220162800000000657973941997624933719635009765625
        },
        "time_window": {
            "start_ts": "2026-08-31T06:13:45+00:00",
            "end_ts": "2026-08-31T11:14:34+00:00"
        },
        "searched_at": "2026-08-31T12:15:02.065609+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}

Methodology: 2026.01.18

Zone Dwell Ust-Luga/St. Petersburg Approach

Aug 31, 2026 06:12 UTC 80.0% ▼

Zone: Ust-Luga/St. Petersburg Approach
Duration: 6h 33m
Data Points: 39 AIS positions
Period: 2026-08-31T06:52:52+00:00 to 2026-08-31T13:26:41+00:00

Show Raw Evidence JSON

{
    "zone_id": "russia_ust_luga_approach",
    "zone_name": "Ust-Luga\/St. Petersburg Approach",
    "dwell_minutes": 393.80000000000001136868377216160297393798828125,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-08-31T06:52:52+00:00",
        "lat": 59.87689999999999912461134954355657100677490234375,
        "lon": 30.218083299999999979945641825906932353973388671875
    },
    "last_point": {
        "ts": "2026-08-31T13:26:41+00:00",
        "lat": 59.876883300000002918750396929681301116943359375,
        "lon": 30.218116699999999497094904654659330844879150390625
    }
}

Methodology: 2026.01.18

Loiter Ust-Luga/St. Petersburg Approach

Aug 31, 2026 06:12 UTC 75.0% ▼

Duration: 6h 33m
Radius: 3 meters
Data Points: 39 AIS positions
Centroid: 59.8769, 30.2181
Zone: Ust-Luga/St. Petersburg Approach

Show Raw Evidence JSON

{
    "radius_m": 3.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 393.80000000000001136868377216160297393798828125,
    "points": 39,
    "centroid": {
        "lat": 59.87689529487177964028887799941003322601318359375,
        "lon": 30.218100428205143970217250171117484569549560546875
    },
    "bbox": {
        "min_lat": 59.87686670000000077607182902283966541290283203125,
        "min_lon": 30.21806670000000138998075271956622600555419921875,
        "max_lat": 59.87691670000000243589965975843369960784912109375,
        "max_lon": 30.218133300000001639773472561500966548919677734375
    },
    "zone_id": "russia_ust_luga_approach"
}

Methodology: 2026.01.18

SGV FLOT

IMO 8033089

Vessel information

Detected Events (100)

Confidence Analysis

🛰️ Satellite Corroboration

Confidence Analysis

Confidence Analysis

Confidence Analysis

🛰️ Satellite Corroboration

🛰️ Gap Corroboration

SAR Imagery (Sentinel-1)

VIIRS Thermal Anomaly

Confidence Analysis

🛰️ Satellite Corroboration

🛰️ Gap Corroboration

SAR Imagery (Sentinel-1)

VIIRS Thermal Anomaly

🛰️ Gap Corroboration

SAR Imagery (Sentinel-1)

VIIRS Thermal Anomaly

Confidence Analysis

Confidence Analysis

🛰️ Satellite Corroboration

Confidence Analysis

🛰️ Satellite Corroboration

Confidence Analysis

🛰️ Satellite Corroboration

Recent Position Data

Data Source

Time (UTC)	Lat	Lon	Course	Zone
Oct 7 08:01	59.8771	30.2181	160.1°	Ust-Luga/St. Petersburg Approach
Oct 7 07:43	59.8771	30.2181	282.5°	Ust-Luga/St. Petersburg Approach
Oct 7 07:40	59.8771	30.2181	355.5°	Ust-Luga/St. Petersburg Approach
Oct 7 07:31	59.8771	30.2181	153.3°	Ust-Luga/St. Petersburg Approach
Oct 7 04:25	59.8772	30.2182	146.1°	Ust-Luga/St. Petersburg Approach
Oct 5 22:46	59.8768	30.2207	29.3°	Ust-Luga/St. Petersburg Approach
Oct 5 22:40	59.8768	30.2207	296.0°	Ust-Luga/St. Petersburg Approach
Oct 5 22:19	59.8768	30.2207	253.1°	Ust-Luga/St. Petersburg Approach
Oct 5 22:04	59.8768	30.2207	48.0°	Ust-Luga/St. Petersburg Approach
Oct 5 21:31	59.8768	30.2207	167.8°	Ust-Luga/St. Petersburg Approach
Oct 5 21:19	59.8768	30.2207	144.1°	Ust-Luga/St. Petersburg Approach
Oct 5 21:10	59.8768	30.2207	127.6°	Ust-Luga/St. Petersburg Approach
Oct 5 21:07	59.8768	30.2207	97.6°	Ust-Luga/St. Petersburg Approach
Oct 5 21:01	59.8768	30.2208	135.8°	Ust-Luga/St. Petersburg Approach
Oct 5 20:58	59.8768	30.2207	51.0°	Ust-Luga/St. Petersburg Approach
Oct 5 20:16	59.8768	30.2207	29.5°	Ust-Luga/St. Petersburg Approach
Oct 5 20:13	59.8769	30.2208	348.6°	Ust-Luga/St. Petersburg Approach
Oct 5 19:43	59.8768	30.2207	150.9°	Ust-Luga/St. Petersburg Approach
Oct 5 18:25	59.8768	30.2207	237.6°	Ust-Luga/St. Petersburg Approach
Oct 5 15:16	59.8768	30.2208	14.6°	Ust-Luga/St. Petersburg Approach

SGV FLOT

IMO 8033089

Vessel information

Detected Events (100)

Confidence Analysis

🛰️ Satellite Corroboration

Confidence Analysis

Confidence Analysis

Confidence Analysis

🛰️ Satellite Corroboration

🛰️ Gap Corroboration

SAR Imagery (Sentinel-1)

VIIRS Thermal Anomaly

Confidence Analysis

🛰️ Satellite Corroboration

🛰️ Gap Corroboration

SAR Imagery (Sentinel-1)

VIIRS Thermal Anomaly

🛰️ Gap Corroboration

SAR Imagery (Sentinel-1)

VIIRS Thermal Anomaly

Confidence Analysis

Confidence Analysis

🛰️ Satellite Corroboration

Confidence Analysis

🛰️ Satellite Corroboration

Confidence Analysis

🛰️ Satellite Corroboration

Recent Position Data

Data Source

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