NAVIG8 EXCEED

IMO 9973913

Vessel information

Vessel Name NAVIG8 EXCEED
IMO Number 9973913
MMSI 563257500
Vessel Type Tanker - Hazard B
Flag 🇸🇬 Singapore
Call Sign 9VDQ7
Length 183 m
Beam 32 m

Detected Events (100)

Sts Eastern Mediterranean Monitoring Zone
Nov 1, 2026 11:08 UTC 65/100 ▼
Vessel A: IMO 9490296 (CHEM RANGER) MARSHALL ISLANDS
Vessel B: IMO 9973913 (NAVIG8 EXCEED) Singapore
  • Minimum Distance: 323 meters
  • Average Distance: 325 meters
  • Duration: 57 minutes
  • Period: 2026-11-01T11:08:36+00:00 to 2026-11-01T12:05:36+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (CHEM RANGER and NAVIG8 EXCEED) maintained close proximity (min 323m, avg 325m) for 57 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 Eastern Mediterranean Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 323m, avg 325m
Duration10/25Duration 57 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538004628,
        "imo": 9490296,
        "name": "CHEM RANGER",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "min_distance_m": 322.69999999999998863131622783839702606201171875,
    "avg_distance_m": 324.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 2.5,
    "duration_minutes": 57,
    "overlap_duration_s": 3420,
    "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": "2026-11-01T11:08:36+00:00",
        "end": "2026-11-01T12:05:36+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "discovered_037",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 323m, avg 325m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 57 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: Eastern Mediterranean Monitoring Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (CHEM RANGER and NAVIG8 EXCEED) maintained close proximity (min 323m, avg 325m) for 57 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 Eastern Mediterranean Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Monitoring Zone
Nov 1, 2026 10:32 UTC 75/100 ▼
Vessel A: IMO 9913626 (YELLOW STARS) MARSHALL ISLANDS
Vessel B: IMO 9973913 (NAVIG8 EXCEED) Singapore
  • Minimum Distance: 308 meters
  • Average Distance: 309 meters
  • Duration: 1h 39m
  • Period: 2026-11-01T10:32:59+00:00 to 2026-11-01T12:11:58+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (YELLOW STARS and NAVIG8 EXCEED) maintained close proximity (min 308m, avg 309m) for 99 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 Eastern Mediterranean Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 308m, avg 309m
Duration20/25Duration 99 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538009099,
        "imo": 9913626,
        "name": "YELLOW STARS",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "min_distance_m": 307.80000000000001136868377216160297393798828125,
    "avg_distance_m": 309,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 99,
    "overlap_duration_s": 5939,
    "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": "2026-11-01T10:32:59+00:00",
        "end": "2026-11-01T12:11:58+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
    },
    "zone_id": "discovered_037",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 308m, avg 309m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 99 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: Eastern Mediterranean Monitoring Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (YELLOW STARS and NAVIG8 EXCEED) maintained close proximity (min 308m, avg 309m) for 99 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 Eastern Mediterranean Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Monitoring Zone
Nov 1, 2026 08:05 UTC 65/100 ▼
Vessel A: IMO 9913626 (YELLOW STARS) MARSHALL ISLANDS
Vessel B: IMO 9973913 (NAVIG8 EXCEED) Singapore
  • Minimum Distance: 307 meters
  • Average Distance: 309 meters
  • Duration: 51 minutes
  • Period: 2026-11-01T08:05:57+00:00 to 2026-11-01T08:56:56+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (YELLOW STARS and NAVIG8 EXCEED) maintained close proximity (min 307m, avg 309m) for 51 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 Eastern Mediterranean Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 307m, avg 309m
Duration10/25Duration 51 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538009099,
        "imo": 9913626,
        "name": "YELLOW STARS",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "min_distance_m": 307,
    "avg_distance_m": 309.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 2.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 51,
    "overlap_duration_s": 3059,
    "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": "2026-11-01T08:05:57+00:00",
        "end": "2026-11-01T08:56:56+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_037",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 307m, avg 309m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 51 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: Eastern Mediterranean Monitoring Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (YELLOW STARS and NAVIG8 EXCEED) maintained close proximity (min 307m, avg 309m) for 51 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 Eastern Mediterranean Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Monitoring Zone
Nov 1, 2026 07:59 UTC 80/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9913626 (YELLOW STARS) MARSHALL ISLANDS
  • Minimum Distance: 308 meters
  • Average Distance: 310 meters
  • Duration: 2h 33m
  • Period: 2026-11-01T07:59:02+00:00 to 2026-11-01T10:32:05+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and YELLOW STARS) maintained close proximity (min 308m, avg 310m) for 153 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 Eastern Mediterranean Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 308m, avg 310m
Duration25/25Duration 153 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±3m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538009099,
        "imo": 9913626,
        "name": "YELLOW STARS",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 307.5,
    "avg_distance_m": 309.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 2.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 153.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 9183,
    "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": "2026-11-01T07:59:02+00:00",
        "end": "2026-11-01T10:32:05+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "discovered_037",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 308m, avg 310m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 153 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and YELLOW STARS) maintained close proximity (min 308m, avg 310m) for 153 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 Eastern Mediterranean Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Monitoring Zone
Nov 1, 2026 07:04 UTC 80/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9490296 (CHEM RANGER) MARSHALL ISLANDS
  • Minimum Distance: 322 meters
  • Average Distance: 327 meters
  • Duration: 3h 27m
  • Period: 2026-11-01T07:04:59+00:00 to 2026-11-01T10:32:05+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and CHEM RANGER) maintained close proximity (min 322m, avg 327m) for 207 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 Eastern Mediterranean Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 322m, avg 327m
Duration25/25Duration 207 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±3m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Monitoring Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-11-01T13:15:01.607028+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538004628,
        "imo": 9490296,
        "name": "CHEM RANGER",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 321.69999999999998863131622783839702606201171875,
    "avg_distance_m": 327.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 2.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 207.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 12426,
    "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": "2026-11-01T07:04:59+00:00",
        "end": "2026-11-01T10:32:05+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "discovered_037",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 322m, avg 327m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 207 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and CHEM RANGER) maintained close proximity (min 322m, avg 327m) for 207 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 Eastern Mediterranean Monitoring Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.7089165000000008376446203328669071197509765625,
            "lon": 33.32160830000000117934177978895604610443115234375
        },
        "time_window": {
            "start_ts": "2026-11-01T07:04:59+00:00",
            "end_ts": "2026-11-01T10:32:05+00:00"
        },
        "searched_at": "2026-11-01T13:15:01.607028+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Monitoring Zone
Nov 1, 2026 07:04 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Monitoring Zone
  • Duration: 5h 30m
  • Data Points: 13 AIS positions
  • Period: 2026-11-01T07:04:59+00:00 to 2026-11-01T12:34:58+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_037",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "dwell_minutes": 330,
    "points_in_zone": 13,
    "first_point": {
        "ts": "2026-11-01T07:04:59+00:00",
        "lat": 34.707678299999997761915437877178192138671875,
        "lon": 33.32058169999999819310687598772346973419189453125
    },
    "last_point": {
        "ts": "2026-11-01T12:34:58+00:00",
        "lat": 34.7076933000000025231202016584575176239013671875,
        "lon": 33.32060830000000350992195308208465576171875
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Monitoring Zone
Nov 1, 2026 07:04 UTC 75.0% ▼
  • Duration: 5h 30m
  • Radius: 4 meters
  • Data Points: 13 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 3.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 330,
    "points": 13,
    "centroid": {
        "lat": 34.707705515384617456220439635217189788818359375,
        "lon": 33.3206005076923048591197584755718708038330078125
    },
    "bbox": {
        "min_lat": 34.707678299999997761915437877178192138671875,
        "min_lon": 33.3205600000000004001776687800884246826171875,
        "max_lat": 34.70773669999999810897861607372760772705078125,
        "max_lon": 33.32062330000000116569935926236212253570556640625
    },
    "zone_id": "discovered_037"
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Monitoring Zone
Nov 1, 2026 06:50 UTC 80/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9490296 (CHEM RANGER) MARSHALL ISLANDS
  • Minimum Distance: 322 meters
  • Average Distance: 327 meters
  • Duration: 3h 45m
  • Period: 2026-11-01T06:46:58+00:00 to 2026-11-01T10:32:05+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and CHEM RANGER) maintained close proximity (min 322m, avg 327m) for 225 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 Eastern Mediterranean Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 322m, avg 327m
Duration25/25Duration 225 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±3m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538004628,
        "imo": 9490296,
        "name": "CHEM RANGER",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 321.69999999999998863131622783839702606201171875,
    "avg_distance_m": 326.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 2.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 225.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 13507,
    "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": "2026-11-01T06:46:58+00:00",
        "end": "2026-11-01T10:32:05+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_037",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 322m, avg 327m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 225 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and CHEM RANGER) maintained close proximity (min 322m, avg 327m) for 225 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 Eastern Mediterranean Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Monitoring Zone
Nov 1, 2026 06:46 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Monitoring Zone
  • Duration: 5h 48m
  • Data Points: 14 AIS positions
  • Period: 2026-11-01T06:46:58+00:00 to 2026-11-01T12:34:58+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_037",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "dwell_minutes": 348,
    "points_in_zone": 14,
    "first_point": {
        "ts": "2026-11-01T06:46:58+00:00",
        "lat": 34.70767000000000024328983272425830364227294921875,
        "lon": 33.32056999999999646888682036660611629486083984375
    },
    "last_point": {
        "ts": "2026-11-01T12:34:58+00:00",
        "lat": 34.7076933000000025231202016584575176239013671875,
        "lon": 33.32060830000000350992195308208465576171875
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Monitoring Zone
Nov 1, 2026 06:46 UTC 75.0% ▼
  • Duration: 5h 48m
  • Radius: 5 meters
  • Data Points: 14 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 4.5,
    "duration_minutes": 348,
    "points": 14,
    "centroid": {
        "lat": 34.70770297857142594466495211236178874969482421875,
        "lon": 33.32059832857142822604146203957498073577880859375
    },
    "bbox": {
        "min_lat": 34.70767000000000024328983272425830364227294921875,
        "min_lon": 33.3205600000000004001776687800884246826171875,
        "max_lat": 34.70773669999999810897861607372760772705078125,
        "max_lon": 33.32062330000000116569935926236212253570556640625
    },
    "zone_id": "discovered_037"
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Monitoring Zone
Nov 1, 2026 06:43 UTC 75/100 ▼
Vessel A: IMO 9363780 (TWINKLE STAR) MARSHALL ISLANDS
Vessel B: IMO 9973913 (NAVIG8 EXCEED) Singapore
  • Minimum Distance: 75 meters
  • Average Distance: 76 meters
  • Duration: 30 minutes
  • Period: 2026-11-01T06:43:42+00:00 to 2026-11-01T07:13:43+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (TWINKLE STAR and NAVIG8 EXCEED) maintained close proximity (min 75m, avg 76m) for 30 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 75m, avg 76m
Duration5/25Duration 30 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±0m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Monitoring Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-11-01T08:15:13.873177+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538005294,
        "imo": 9363780,
        "name": "TWINKLE STAR",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "min_distance_m": 75.2999999999999971578290569595992565155029296875,
    "avg_distance_m": 75.5,
    "distance_consistency_m": 0.200000000000000011102230246251565404236316680908203125,
    "duration_minutes": 30,
    "overlap_duration_s": 1801,
    "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": "2026-11-01T06:43:42+00:00",
        "end": "2026-11-01T07:13:43+00:00"
    },
    "points_count": {
        "vessel_a": 2,
        "vessel_b": 2
    },
    "zone_id": "discovered_037",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 75m, avg 76m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 30 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b10m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Monitoring Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (TWINKLE STAR and NAVIG8 EXCEED) maintained close proximity (min 75m, avg 76m) for 30 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Monitoring Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70789959999999751971699879504740238189697265625,
            "lon": 33.320267499999999927240423858165740966796875
        },
        "time_window": {
            "start_ts": "2026-11-01T06:43:42+00:00",
            "end_ts": "2026-11-01T07:13:43+00:00"
        },
        "searched_at": "2026-11-01T08:15:13.873177+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Monitoring Zone
Nov 1, 2026 05:11 UTC 80/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9490296 (CHEM RANGER) MARSHALL ISLANDS
  • Minimum Distance: 322 meters
  • Average Distance: 327 meters
  • Duration: 5h 21m
  • Period: 2026-11-01T05:11:00+00:00 to 2026-11-01T10:32:05+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and CHEM RANGER) maintained close proximity (min 322m, avg 327m) for 321 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 Eastern Mediterranean Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 322m, avg 327m
Duration25/25Duration 321 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Monitoring Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-11-01T11:45:01.476749+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538004628,
        "imo": 9490296,
        "name": "CHEM RANGER",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 321.69999999999998863131622783839702606201171875,
    "avg_distance_m": 326.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 2.5,
    "duration_minutes": 321.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 19265,
    "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": "2026-11-01T05:11:00+00:00",
        "end": "2026-11-01T10:32:05+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "discovered_037",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 322m, avg 327m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 321 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: Eastern Mediterranean Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and CHEM RANGER) maintained close proximity (min 322m, avg 327m) for 321 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 Eastern Mediterranean Monitoring Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.7089126999999990630385582335293292999267578125,
            "lon": 33.321598399999999173815012909471988677978515625
        },
        "time_window": {
            "start_ts": "2026-11-01T05:11:00+00:00",
            "end_ts": "2026-11-01T10:32:05+00:00"
        },
        "searched_at": "2026-11-01T11:45:01.476749+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Monitoring Zone
Nov 1, 2026 05:04 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Monitoring Zone
  • Duration: 6h 33m
  • Data Points: 13 AIS positions
  • Period: 2026-11-01T05:04:59+00:00 to 2026-11-01T11:37:58+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_037",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "dwell_minutes": 393,
    "points_in_zone": 13,
    "first_point": {
        "ts": "2026-11-01T05:04:59+00:00",
        "lat": 34.70771169999999727906470070593059062957763671875,
        "lon": 33.3205650000000019872459233738481998443603515625
    },
    "last_point": {
        "ts": "2026-11-01T11:37:58+00:00",
        "lat": 34.70770329999999859182935324497520923614501953125,
        "lon": 33.3206033000000019228536984883248805999755859375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Monitoring Zone
Nov 1, 2026 05:04 UTC 75.0% ▼
  • Duration: 6h 33m
  • Radius: 4 meters
  • Data Points: 13 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 4.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 393,
    "points": 13,
    "centroid": {
        "lat": 34.707705138461534488669713027775287628173828125,
        "lon": 33.32058961538461261397969792596995830535888671875
    },
    "bbox": {
        "min_lat": 34.70767000000000024328983272425830364227294921875,
        "min_lon": 33.3205600000000004001776687800884246826171875,
        "max_lat": 34.70773669999999810897861607372760772705078125,
        "max_lon": 33.32061999999999812871465110220015048980712890625
    },
    "zone_id": "discovered_037"
}
Methodology: 2026.01.18
Sts Northern Baltic Sea Surveillance Zone
Nov 1, 2026 04:40 UTC 80/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9490296 (CHEM RANGER) MARSHALL ISLANDS
  • Minimum Distance: 324 meters
  • Average Distance: 325 meters
  • Duration: 2h 6m
  • Period: 2026-11-01T04:40:56+00:00 to 2026-11-01T06:46:58+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and CHEM RANGER) maintained close proximity (min 324m, avg 325m) for 126 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 324m, avg 325m
Duration25/25Duration 126 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538004628,
        "imo": 9490296,
        "name": "CHEM RANGER",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 323.6000000000000227373675443232059478759765625,
    "avg_distance_m": 325.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 1,
    "duration_minutes": 126,
    "overlap_duration_s": 7562,
    "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": "2026-11-01T04:40:56+00:00",
        "end": "2026-11-01T06:46:58+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 324m, avg 325m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 126 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: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and CHEM RANGER) maintained close proximity (min 324m, avg 325m) for 126 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Monitoring Zone
Nov 1, 2026 04:40 UTC 80/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9490296 (CHEM RANGER) MARSHALL ISLANDS
  • Minimum Distance: 322 meters
  • Average Distance: 326 meters
  • Duration: 5h 51m
  • Period: 2026-11-01T04:40:56+00:00 to 2026-11-01T10:32:05+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and CHEM RANGER) maintained close proximity (min 322m, avg 326m) for 351 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 Eastern Mediterranean Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 322m, avg 326m
Duration25/25Duration 351 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538004628,
        "imo": 9490296,
        "name": "CHEM RANGER",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 321.69999999999998863131622783839702606201171875,
    "avg_distance_m": 326.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 2.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 351.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 21069,
    "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": "2026-11-01T04:40:56+00:00",
        "end": "2026-11-01T10:32:05+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "discovered_037",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 322m, avg 326m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 351 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: Eastern Mediterranean Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and CHEM RANGER) maintained close proximity (min 322m, avg 326m) for 351 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 Eastern Mediterranean Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Monitoring Zone
Nov 1, 2026 04:07 UTC 95/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9363780 (TWINKLE STAR) MARSHALL ISLANDS
  • Minimum Distance: 71 meters
  • Average Distance: 72 meters
  • Duration: 2h 54m
  • Period: 2026-11-01T04:10:58+00:00 to 2026-11-01T07:04:59+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 71m, avg 72m) for 174 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 Eastern Mediterranean Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 71m, avg 72m
Duration25/25Duration 174 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538005294,
        "imo": 9363780,
        "name": "TWINKLE STAR",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 70.599999999999994315658113919198513031005859375,
    "avg_distance_m": 72.400000000000005684341886080801486968994140625,
    "distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 174,
    "overlap_duration_s": 10441,
    "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": "2026-11-01T04:10:58+00:00",
        "end": "2026-11-01T07:04:59+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "discovered_037",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 71m, avg 72m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 174 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: Eastern Mediterranean Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 71m, avg 72m) for 174 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 Eastern Mediterranean Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Monitoring Zone
Nov 1, 2026 04:01 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Monitoring Zone
  • Duration: 6h 36m
  • Data Points: 13 AIS positions
  • Period: 2026-11-01T04:52:54+00:00 to 2026-11-01T11:29:07+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_037",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "dwell_minutes": 396.19999999999998863131622783839702606201171875,
    "points_in_zone": 13,
    "first_point": {
        "ts": "2026-11-01T04:52:54+00:00",
        "lat": 34.70770329999999859182935324497520923614501953125,
        "lon": 33.3205650000000019872459233738481998443603515625
    },
    "last_point": {
        "ts": "2026-11-01T11:29:07+00:00",
        "lat": 34.7077067000000027974238037131726741790771484375,
        "lon": 33.3206100000000020600054995156824588775634765625
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Monitoring Zone
Nov 1, 2026 04:01 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 4 meters
  • Data Points: 13 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 4.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 396.19999999999998863131622783839702606201171875,
    "points": 13,
    "centroid": {
        "lat": 34.707705138461534488669713027775287628173828125,
        "lon": 33.3205866692307637322301161475479602813720703125
    },
    "bbox": {
        "min_lat": 34.70767000000000024328983272425830364227294921875,
        "min_lon": 33.3205600000000004001776687800884246826171875,
        "max_lat": 34.70773669999999810897861607372760772705078125,
        "max_lon": 33.32061999999999812871465110220015048980712890625
    },
    "zone_id": "discovered_037"
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Monitoring Zone
Nov 1, 2026 03:58 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Monitoring Zone
  • Duration: 4h 51m
  • Data Points: 15 AIS positions
  • Period: 2026-11-01T03:58:58+00:00 to 2026-11-01T08:50:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_037",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "dwell_minutes": 291.1000000000000227373675443232059478759765625,
    "points_in_zone": 15,
    "first_point": {
        "ts": "2026-11-01T03:58:58+00:00",
        "lat": 34.70771669999999886613295529969036579132080078125,
        "lon": 33.32057669999999660603862139396369457244873046875
    },
    "last_point": {
        "ts": "2026-11-01T08:50:02+00:00",
        "lat": 34.7077316999999965219103614799678325653076171875,
        "lon": 33.3206033000000019228536984883248805999755859375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Monitoring Zone
Nov 1, 2026 03:58 UTC 75.0% ▼
  • Duration: 4h 51m
  • Radius: 4 meters
  • Data Points: 15 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 4.0999999999999996447286321199499070644378662109375,
    "duration_minutes": 291.1000000000000227373675443232059478759765625,
    "points": 15,
    "centroid": {
        "lat": 34.707706680000001142616383731365203857421875,
        "lon": 33.32057255999999512141585000790655612945556640625
    },
    "bbox": {
        "min_lat": 34.70767000000000024328983272425830364227294921875,
        "min_lon": 33.3205482999999986759576131589710712432861328125,
        "max_lat": 34.70773669999999810897861607372760772705078125,
        "max_lon": 33.3206033000000019228536984883248805999755859375
    },
    "zone_id": "discovered_037"
}
Methodology: 2026.01.18
Sts🛰️✗ Northern Baltic Sea Surveillance Zone
Nov 1, 2026 03:53 UTC 65/100 ▼
Vessel A: IMO 9913626 (YELLOW STARS) MARSHALL ISLANDS
Vessel B: IMO 9973913 (NAVIG8 EXCEED) Singapore
  • Minimum Distance: 311 meters
  • Average Distance: 313 meters
  • Duration: 45 minutes
  • Period: 2026-11-01T03:53:51+00:00 to 2026-11-01T04:38:58+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (YELLOW STARS and NAVIG8 EXCEED) maintained close proximity (min 310m, avg 313m) for 45 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 310m, avg 313m
Duration10/25Duration 45 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±3m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-11-01T05:45:01.973600+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538009099,
        "imo": 9913626,
        "name": "YELLOW STARS",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "min_distance_m": 310.5,
    "avg_distance_m": 313.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 2.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 45.10000000000000142108547152020037174224853515625,
    "overlap_duration_s": 2707,
    "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": "2026-11-01T03:53:51+00:00",
        "end": "2026-11-01T04:38:58+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 310m, avg 313m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 45 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (YELLOW STARS and NAVIG8 EXCEED) maintained close proximity (min 310m, avg 313m) for 45 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70870219999999761739672976545989513397216796875,
            "lon": 33.3217556000000030280716600827872753143310546875
        },
        "time_window": {
            "start_ts": "2026-11-01T03:53:51+00:00",
            "end_ts": "2026-11-01T04:38:58+00:00"
        },
        "searched_at": "2026-11-01T05:45:01.973600+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Monitoring Zone
Nov 1, 2026 03:53 UTC 65/100 ▼
Vessel A: IMO 9913626 (YELLOW STARS) MARSHALL ISLANDS
Vessel B: IMO 9973913 (NAVIG8 EXCEED) Singapore
  • Minimum Distance: 311 meters
  • Average Distance: 313 meters
  • Duration: 45 minutes
  • Period: 2026-11-01T03:53:51+00:00 to 2026-11-01T04:38:58+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (YELLOW STARS and NAVIG8 EXCEED) maintained close proximity (min 310m, avg 313m) for 45 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 Eastern Mediterranean Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 310m, avg 313m
Duration10/25Duration 45 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±3m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Monitoring Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-11-01T08:15:18.908908+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538009099,
        "imo": 9913626,
        "name": "YELLOW STARS",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "min_distance_m": 310.5,
    "avg_distance_m": 313.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 2.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 45.10000000000000142108547152020037174224853515625,
    "overlap_duration_s": 2707,
    "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": "2026-11-01T03:53:51+00:00",
        "end": "2026-11-01T04:38:58+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
    },
    "zone_id": "discovered_037",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 310m, avg 313m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 45 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Monitoring Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (YELLOW STARS and NAVIG8 EXCEED) maintained close proximity (min 310m, avg 313m) for 45 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 Eastern Mediterranean Monitoring Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70870219999999761739672976545989513397216796875,
            "lon": 33.3217556000000030280716600827872753143310546875
        },
        "time_window": {
            "start_ts": "2026-11-01T03:53:51+00:00",
            "end_ts": "2026-11-01T04:38:58+00:00"
        },
        "searched_at": "2026-11-01T08:15:18.908908+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Northern Baltic Sea Surveillance Zone
Nov 1, 2026 03:49 UTC 85/100 ▼
Vessel A: IMO 9363780 (TWINKLE STAR) MARSHALL ISLANDS
Vessel B: IMO 9973913 (NAVIG8 EXCEED) Singapore
  • Minimum Distance: 71 meters
  • Average Distance: 71 meters
  • Duration: 1h 15m
  • Period: 2026-11-01T03:49:42+00:00 to 2026-11-01T05:04:47+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (TWINKLE STAR and NAVIG8 EXCEED) maintained close proximity (min 71m, avg 71m) for 75 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 71m, avg 71m
Duration15/25Duration 75 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±0m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538005294,
        "imo": 9363780,
        "name": "TWINKLE STAR",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "min_distance_m": 70.599999999999994315658113919198513031005859375,
    "avg_distance_m": 71.400000000000005684341886080801486968994140625,
    "distance_consistency_m": 0.5,
    "duration_minutes": 75.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 4505,
    "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": "2026-11-01T03:49:42+00:00",
        "end": "2026-11-01T05:04:47+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 71m, avg 71m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 75 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: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TWINKLE STAR and NAVIG8 EXCEED) maintained close proximity (min 71m, avg 71m) for 75 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Monitoring Zone
Nov 1, 2026 03:49 UTC 95/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9363780 (TWINKLE STAR) MARSHALL ISLANDS
  • Minimum Distance: 70 meters
  • Average Distance: 72 meters
  • Duration: 3h 6m
  • Period: 2026-11-01T03:58:58+00:00 to 2026-11-01T07:04:59+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 70m, avg 72m) for 186 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 Eastern Mediterranean Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 70m, avg 72m
Duration25/25Duration 186 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Monitoring Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538005294,
        "imo": 9363780,
        "name": "TWINKLE STAR",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 70.400000000000005684341886080801486968994140625,
    "avg_distance_m": 72.099999999999994315658113919198513031005859375,
    "distance_consistency_m": 1.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 186,
    "overlap_duration_s": 11161,
    "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": "2026-11-01T03:58:58+00:00",
        "end": "2026-11-01T07:04:59+00:00"
    },
    "points_count": {
        "vessel_a": 11,
        "vessel_b": 11
    },
    "zone_id": "discovered_037",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 70m, avg 72m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 186 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: Eastern Mediterranean Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 70m, avg 72m) for 186 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 Eastern Mediterranean Monitoring Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Monitoring Zone
Nov 1, 2026 02:46 UTC 95/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9363780 (TWINKLE STAR) MARSHALL ISLANDS
  • Minimum Distance: 70 meters
  • Average Distance: 72 meters
  • Duration: 4h 18m
  • Period: 2026-11-01T02:46:55+00:00 to 2026-11-01T07:04:59+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Monitoring Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 70m, avg 72m) for 258 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 Eastern Mediterranean Monitoring Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 70m, avg 72m
Duration25/25Duration 258 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Monitoring Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-11-01T08:45:10.674099+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538005294,
        "imo": 9363780,
        "name": "TWINKLE STAR",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 70.400000000000005684341886080801486968994140625,
    "avg_distance_m": 72.2999999999999971578290569595992565155029296875,
    "distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 258.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 15484,
    "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": "2026-11-01T02:46:55+00:00",
        "end": "2026-11-01T07:04:59+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "discovered_037",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 70m, avg 72m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 258 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: Eastern Mediterranean Monitoring Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 70m, avg 72m) for 258 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 Eastern Mediterranean Monitoring Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.707910499999997000486473552882671356201171875,
            "lon": 33.32026900000000324553184327669441699981689453125
        },
        "time_window": {
            "start_ts": "2026-11-01T02:46:55+00:00",
            "end_ts": "2026-11-01T07:04:59+00:00"
        },
        "searched_at": "2026-11-01T08:45:10.674099+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Monitoring Zone
Nov 1, 2026 02:46 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Monitoring Zone
  • Duration: 6h 3m
  • Data Points: 17 AIS positions
  • Period: 2026-11-01T02:46:55+00:00 to 2026-11-01T08:50:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_037",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "dwell_minutes": 363.1000000000000227373675443232059478759765625,
    "points_in_zone": 17,
    "first_point": {
        "ts": "2026-11-01T02:46:55+00:00",
        "lat": 34.707701700000001210355549119412899017333984375,
        "lon": 33.32058500000000123009158414788544178009033203125
    },
    "last_point": {
        "ts": "2026-11-01T08:50:02+00:00",
        "lat": 34.7077316999999965219103614799678325653076171875,
        "lon": 33.3206033000000019228536984883248805999755859375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Monitoring Zone
Nov 1, 2026 02:46 UTC 75.0% ▼
  • Duration: 6h 3m
  • Radius: 4 meters
  • Data Points: 17 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 4,
    "duration_minutes": 363.1000000000000227373675443232059478759765625,
    "points": 17,
    "centroid": {
        "lat": 34.70770609411764695551028125919401645660400390625,
        "lon": 33.32057402352941011258735670708119869232177734375
    },
    "bbox": {
        "min_lat": 34.70767000000000024328983272425830364227294921875,
        "min_lon": 33.3205482999999986759576131589710712432861328125,
        "max_lat": 34.70773669999999810897861607372760772705078125,
        "max_lon": 33.3206033000000019228536984883248805999755859375
    },
    "zone_id": "discovered_037"
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Monitoring Zone
Nov 1, 2026 01:43 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Monitoring Zone
  • Duration: 6h 33m
  • Data Points: 16 AIS positions
  • Period: 2026-11-01T01:43:55+00:00 to 2026-11-01T08:17:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_037",
    "zone_name": "Eastern Mediterranean Monitoring Zone",
    "dwell_minutes": 393.1000000000000227373675443232059478759765625,
    "points_in_zone": 16,
    "first_point": {
        "ts": "2026-11-01T01:43:55+00:00",
        "lat": 34.70770329999999859182935324497520923614501953125,
        "lon": 33.32059000000000281715983874164521694183349609375
    },
    "last_point": {
        "ts": "2026-11-01T08:17:02+00:00",
        "lat": 34.70773669999999810897861607372760772705078125,
        "lon": 33.32058500000000123009158414788544178009033203125
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Monitoring Zone
Nov 1, 2026 01:43 UTC 75.0% ▼
  • Duration: 6h 33m
  • Radius: 4 meters
  • Data Points: 16 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Monitoring Zone
Show Raw Evidence JSON
{
    "radius_m": 3.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 393.1000000000000227373675443232059478759765625,
    "points": 16,
    "centroid": {
        "lat": 34.707704906250000931322574615478515625,
        "lon": 33.32057406874999827550709596835076808929443359375
    },
    "bbox": {
        "min_lat": 34.70767000000000024328983272425830364227294921875,
        "min_lon": 33.3205482999999986759576131589710712432861328125,
        "max_lat": 34.70773669999999810897861607372760772705078125,
        "max_lon": 33.32059000000000281715983874164521694183349609375
    },
    "zone_id": "discovered_037"
}
Methodology: 2026.01.18
Sts🛰️✗ Northern Baltic Sea Surveillance Zone
Nov 1, 2026 01:28 UTC 70/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9913626 (YELLOW STARS) MARSHALL ISLANDS
  • Minimum Distance: 309 meters
  • Average Distance: 310 meters
  • Duration: 1h 18m
  • Period: 2026-11-01T01:28:53+00:00 to 2026-11-01T02:46:55+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (NAVIG8 EXCEED and YELLOW STARS) maintained close proximity (min 309m, avg 310m) for 78 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 309m, avg 310m
Duration15/25Duration 78 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-11-01T04:00:10.705212+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538009099,
        "imo": 9913626,
        "name": "YELLOW STARS",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 308.6000000000000227373675443232059478759765625,
    "avg_distance_m": 309.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 1.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 78,
    "overlap_duration_s": 4682,
    "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": "2026-11-01T01:28:53+00:00",
        "end": "2026-11-01T02:46:55+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 309m, avg 310m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 78 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: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (NAVIG8 EXCEED and YELLOW STARS) maintained close proximity (min 309m, avg 310m) for 78 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70870860000000135414666146971285343170166015625,
            "lon": 33.32177109999999942147042020224034786224365234375
        },
        "time_window": {
            "start_ts": "2026-11-01T01:28:53+00:00",
            "end_ts": "2026-11-01T02:46:55+00:00"
        },
        "searched_at": "2026-11-01T04:00:10.705212+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Nov 1, 2026 01:13 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 16 AIS positions
  • Period: 2026-11-01T01:28:53+00:00 to 2026-11-01T07:59:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 390.1000000000000227373675443232059478759765625,
    "points_in_zone": 16,
    "first_point": {
        "ts": "2026-11-01T01:28:53+00:00",
        "lat": 34.70772170000000045320120989345014095306396484375,
        "lon": 33.32059670000000295431163976900279521942138671875
    },
    "last_point": {
        "ts": "2026-11-01T07:59:02+00:00",
        "lat": 34.70770830000000017889760783873498439788818359375,
        "lon": 33.320566700000000537329469807446002960205078125
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Nov 1, 2026 01:13 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 4 meters
  • Data Points: 16 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 390.1000000000000227373675443232059478759765625,
    "points": 16,
    "centroid": {
        "lat": 34.70770396875000329828253597952425479888916015625,
        "lon": 33.32057479999999571873559034429490566253662109375
    },
    "bbox": {
        "min_lat": 34.70767000000000024328983272425830364227294921875,
        "min_lon": 33.3205482999999986759576131589710712432861328125,
        "max_lat": 34.7077316999999965219103614799678325653076171875,
        "max_lon": 33.32059670000000295431163976900279521942138671875
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Sts Northern Baltic Sea Surveillance Zone
Nov 1, 2026 01:04 UTC 95/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9363780 (TWINKLE STAR) MARSHALL ISLANDS
  • Minimum Distance: 70 meters
  • Average Distance: 73 meters
  • Duration: 5h 21m
  • Period: 2026-11-01T01:43:55+00:00 to 2026-11-01T07:04:59+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 70m, avg 72m) for 321 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 70m, avg 72m
Duration25/25Duration 321 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538005294,
        "imo": 9363780,
        "name": "TWINKLE STAR",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 70.400000000000005684341886080801486968994140625,
    "avg_distance_m": 72.5,
    "distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 321.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 19264,
    "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": "2026-11-01T01:43:55+00:00",
        "end": "2026-11-01T07:04:59+00:00"
    },
    "points_count": {
        "vessel_a": 14,
        "vessel_b": 14
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 70m, avg 72m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 321 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: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 70m, avg 72m) for 321 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Northern Baltic Sea Surveillance Zone
Nov 1, 2026 00:44 UTC 95/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9363780 (TWINKLE STAR) MARSHALL ISLANDS
  • Minimum Distance: 70 meters
  • Average Distance: 73 meters
  • Duration: 4h 27m
  • Period: 2026-11-01T00:44:00+00:00 to 2026-11-01T05:11:00+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 70m, avg 73m) for 267 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 70m, avg 73m
Duration25/25Duration 267 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-11-01T06:45:01.437139+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538005294,
        "imo": 9363780,
        "name": "TWINKLE STAR",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 70.400000000000005684341886080801486968994140625,
    "avg_distance_m": 72.7000000000000028421709430404007434844970703125,
    "distance_consistency_m": 2,
    "duration_minutes": 267,
    "overlap_duration_s": 16020,
    "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": "2026-11-01T00:44:00+00:00",
        "end": "2026-11-01T05:11:00+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 70m, avg 73m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 267 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: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 70m, avg 73m) for 267 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.707913300000001299849827773869037628173828125,
            "lon": 33.32027240000000034569893614389002323150634765625
        },
        "time_window": {
            "start_ts": "2026-11-01T00:44:00+00:00",
            "end_ts": "2026-11-01T05:11:00+00:00"
        },
        "searched_at": "2026-11-01T06:45:01.437139+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Northern Baltic Sea Surveillance Zone
Nov 1, 2026 00:20 UTC 65/100 ▼
Vessel A: IMO 9490296 (CHEM RANGER) MARSHALL ISLANDS
Vessel B: IMO 9973913 (NAVIG8 EXCEED) Singapore
  • Minimum Distance: 324 meters
  • Average Distance: 328 meters
  • Duration: 59 minutes
  • Period: 2026-11-01T00:20:36+00:00 to 2026-11-01T01:20:32+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (CHEM RANGER and NAVIG8 EXCEED) maintained close proximity (min 324m, avg 328m) for 60 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 324m, avg 328m
Duration10/25Duration 60 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±4m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-11-01T04:45:01.845829+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538004628,
        "imo": 9490296,
        "name": "CHEM RANGER",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "min_distance_m": 323.80000000000001136868377216160297393798828125,
    "avg_distance_m": 327.5,
    "distance_consistency_m": 4.0999999999999996447286321199499070644378662109375,
    "duration_minutes": 59.89999999999999857891452847979962825775146484375,
    "overlap_duration_s": 3596,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-11-01T00:20:36+00:00",
        "end": "2026-11-01T01:20:32+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 324m, avg 328m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 60 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (CHEM RANGER and NAVIG8 EXCEED) maintained close proximity (min 324m, avg 328m) for 60 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70889849999999654528437531553208827972412109375,
            "lon": 33.321625199999999722422217018902301788330078125
        },
        "time_window": {
            "start_ts": "2026-11-01T00:20:36+00:00",
            "end_ts": "2026-11-01T01:20:32+00:00"
        },
        "searched_at": "2026-11-01T04:45:01.845829+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Nov 1, 2026 00:10 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 21m
  • Data Points: 17 AIS positions
  • Period: 2026-11-01T00:44:00+00:00 to 2026-11-01T07:04:59+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 381,
    "points_in_zone": 17,
    "first_point": {
        "ts": "2026-11-01T00:44:00+00:00",
        "lat": 34.70771669999999886613295529969036579132080078125,
        "lon": 33.32061829999999957863110466860234737396240234375
    },
    "last_point": {
        "ts": "2026-11-01T07:04:59+00:00",
        "lat": 34.707678299999997761915437877178192138671875,
        "lon": 33.32058169999999819310687598772346973419189453125
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Nov 1, 2026 00:10 UTC 75.0% ▼
  • Duration: 6h 21m
  • Radius: 4 meters
  • Data Points: 17 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 381,
    "points": 17,
    "centroid": {
        "lat": 34.70770305294117719085988937877118587493896484375,
        "lon": 33.3205799058823544100960134528577327728271484375
    },
    "bbox": {
        "min_lat": 34.70767000000000024328983272425830364227294921875,
        "min_lon": 33.3205482999999986759576131589710712432861328125,
        "max_lat": 34.7077316999999965219103614799678325653076171875,
        "max_lon": 33.32061829999999957863110466860234737396240234375
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Sts🛰️✗ Northern Baltic Sea Surveillance Zone
Nov 1, 2026 00:05 UTC 75/100 ▼
Vessel A: IMO 9913626 (YELLOW STARS) MARSHALL ISLANDS
Vessel B: IMO 9973913 (NAVIG8 EXCEED) Singapore
  • Minimum Distance: 307 meters
  • Average Distance: 310 meters
  • Duration: 1h 48m
  • Period: 2026-11-01T00:05:53+00:00 to 2026-11-01T01:53:54+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (YELLOW STARS and NAVIG8 EXCEED) maintained close proximity (min 307m, avg 310m) for 108 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 307m, avg 310m
Duration20/25Duration 108 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-11-01T06:15:12.591043+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538009099,
        "imo": 9913626,
        "name": "YELLOW STARS",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "min_distance_m": 307.30000000000001136868377216160297393798828125,
    "avg_distance_m": 309.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 2,
    "duration_minutes": 108,
    "overlap_duration_s": 6481,
    "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": "2026-11-01T00:05:53+00:00",
        "end": "2026-11-01T01:53:54+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 307m, avg 310m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 108 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: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (YELLOW STARS and NAVIG8 EXCEED) maintained close proximity (min 307m, avg 310m) for 108 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.7087044000000020105289877392351627349853515625,
            "lon": 33.3217776999999983900124789215624332427978515625
        },
        "time_window": {
            "start_ts": "2026-11-01T00:05:53+00:00",
            "end_ts": "2026-11-01T01:53:54+00:00"
        },
        "searched_at": "2026-11-01T06:15:12.591043+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Northern Baltic Sea Surveillance Zone
Oct 31, 2026 23:28 UTC 95/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9363780 (TWINKLE STAR) MARSHALL ISLANDS
  • Minimum Distance: 70 meters
  • Average Distance: 73 meters
  • Duration: 5h 30m
  • Period: 2026-10-31T23:40:58+00:00 to 2026-11-01T05:11:00+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 70m, avg 73m) for 330 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 70m, avg 73m
Duration25/25Duration 330 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538005294,
        "imo": 9363780,
        "name": "TWINKLE STAR",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 70.400000000000005684341886080801486968994140625,
    "avg_distance_m": 73.099999999999994315658113919198513031005859375,
    "distance_consistency_m": 2,
    "duration_minutes": 330,
    "overlap_duration_s": 19802,
    "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": "2026-10-31T23:40:58+00:00",
        "end": "2026-11-01T05:11:00+00:00"
    },
    "points_count": {
        "vessel_a": 18,
        "vessel_b": 18
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 70m, avg 73m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 330 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: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 70m, avg 73m) for 330 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 31, 2026 23:22 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 5h 48m
  • Data Points: 20 AIS positions
  • Period: 2026-10-31T23:22:56+00:00 to 2026-11-01T05:11:00+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 348.1000000000000227373675443232059478759765625,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-10-31T23:22:56+00:00",
        "lat": 34.70770830000000017889760783873498439788818359375,
        "lon": 33.3206167000000021971573005430400371551513671875
    },
    "last_point": {
        "ts": "2026-11-01T05:11:00+00:00",
        "lat": 34.707701700000001210355549119412899017333984375,
        "lon": 33.3205717000000021243977244012057781219482421875
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Oct 31, 2026 23:22 UTC 75.0% ▼
  • Duration: 5h 48m
  • Radius: 4 meters
  • Data Points: 20 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 348.1000000000000227373675443232059478759765625,
    "points": 20,
    "centroid": {
        "lat": 34.7077050900000045885462895967066287994384765625,
        "lon": 33.32058700500000014699253370054066181182861328125
    },
    "bbox": {
        "min_lat": 34.70768000000000341742634191177785396575927734375,
        "min_lon": 33.3205482999999986759576131589710712432861328125,
        "max_lat": 34.7077316999999965219103614799678325653076171875,
        "max_lon": 33.32062169999999667879819753579795360565185546875
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Sts Northern Baltic Sea Surveillance Zone
Oct 31, 2026 23:14 UTC 80/100 ▼
Vessel A: IMO 9913626 (YELLOW STARS) MARSHALL ISLANDS
Vessel B: IMO 9973913 (NAVIG8 EXCEED) Singapore
  • Minimum Distance: 307 meters
  • Average Distance: 310 meters
  • Duration: 2h 39m
  • Period: 2026-10-31T23:14:56+00:00 to 2026-11-01T01:53:54+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (YELLOW STARS and NAVIG8 EXCEED) maintained close proximity (min 307m, avg 310m) for 159 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 307m, avg 310m
Duration25/25Duration 159 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538009099,
        "imo": 9913626,
        "name": "YELLOW STARS",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "min_distance_m": 307.30000000000001136868377216160297393798828125,
    "avg_distance_m": 309.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 159,
    "overlap_duration_s": 9538,
    "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": "2026-10-31T23:14:56+00:00",
        "end": "2026-11-01T01:53:54+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 307m, avg 310m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 159 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: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (YELLOW STARS and NAVIG8 EXCEED) maintained close proximity (min 307m, avg 310m) for 159 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Northern Baltic Sea Surveillance Zone
Oct 31, 2026 21:50 UTC 80/100 ▼
Vessel A: IMO 9490296 (CHEM RANGER) MARSHALL ISLANDS
Vessel B: IMO 9973913 (NAVIG8 EXCEED) Singapore
  • Minimum Distance: 324 meters
  • Average Distance: 328 meters
  • Duration: 3h 30m
  • Period: 2026-10-31T21:50:32+00:00 to 2026-11-01T01:20:32+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (CHEM RANGER and NAVIG8 EXCEED) maintained close proximity (min 324m, avg 328m) for 210 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 324m, avg 328m
Duration25/25Duration 210 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±4m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538004628,
        "imo": 9490296,
        "name": "CHEM RANGER",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "min_distance_m": 323.80000000000001136868377216160297393798828125,
    "avg_distance_m": 327.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 3.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 210,
    "overlap_duration_s": 12600,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-10-31T21:50:32+00:00",
        "end": "2026-11-01T01:20:32+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 324m, avg 328m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 210 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (CHEM RANGER and NAVIG8 EXCEED) maintained close proximity (min 324m, avg 328m) for 210 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Northern Baltic Sea Surveillance Zone
Oct 31, 2026 21:40 UTC 95/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9363780 (TWINKLE STAR) MARSHALL ISLANDS
  • Minimum Distance: 70 meters
  • Average Distance: 74 meters
  • Duration: 6h 21m
  • Period: 2026-10-31T21:40:59+00:00 to 2026-11-01T04:01:57+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 70m, avg 74m) for 381 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 70m, avg 74m
Duration25/25Duration 381 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-11-01T04:15:01.497183+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538005294,
        "imo": 9363780,
        "name": "TWINKLE STAR",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 70.400000000000005684341886080801486968994140625,
    "avg_distance_m": 74.400000000000005684341886080801486968994140625,
    "distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 381,
    "overlap_duration_s": 22858,
    "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": "2026-10-31T21:40:59+00:00",
        "end": "2026-11-01T04:01:57+00:00"
    },
    "points_count": {
        "vessel_a": 14,
        "vessel_b": 14
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 70m, avg 74m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 381 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: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 70m, avg 74m) for 381 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70791390000000120608092402108013629913330078125,
            "lon": 33.320279499999998051862348802387714385986328125
        },
        "time_window": {
            "start_ts": "2026-10-31T21:40:59+00:00",
            "end_ts": "2026-11-01T04:01:57+00:00"
        },
        "searched_at": "2026-11-01T04:15:01.497183+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Northern Baltic Sea Surveillance Zone
Oct 31, 2026 21:34 UTC 80/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9913626 (YELLOW STARS) MARSHALL ISLANDS
  • Minimum Distance: 309 meters
  • Average Distance: 310 meters
  • Duration: 2h 36m
  • Period: 2026-10-31T21:34:58+00:00 to 2026-11-01T00:10:58+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and YELLOW STARS) maintained close proximity (min 309m, avg 310m) for 156 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 309m, avg 310m
Duration25/25Duration 156 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538009099,
        "imo": 9913626,
        "name": "YELLOW STARS",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 309.1000000000000227373675443232059478759765625,
    "avg_distance_m": 310,
    "distance_consistency_m": 0.90000000000000002220446049250313080847263336181640625,
    "duration_minutes": 156,
    "overlap_duration_s": 9360,
    "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": "2026-10-31T21:34:58+00:00",
        "end": "2026-11-01T00:10:58+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 309m, avg 310m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 156 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: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and YELLOW STARS) maintained close proximity (min 309m, avg 310m) for 156 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 31, 2026 21:34 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 15 AIS positions
  • Period: 2026-10-31T21:40:59+00:00 to 2026-11-01T04:10:58+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 15,
    "first_point": {
        "ts": "2026-10-31T21:40:59+00:00",
        "lat": 34.70769829999999700476109865121543407440185546875,
        "lon": 33.320594999999997298800735734403133392333984375
    },
    "last_point": {
        "ts": "2026-11-01T04:10:58+00:00",
        "lat": 34.70772000000000190311766345985233783721923828125,
        "lon": 33.32057830000000109293978312052786350250244140625
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Oct 31, 2026 21:34 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 4 meters
  • Data Points: 15 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 390,
    "points": 15,
    "centroid": {
        "lat": 34.707706000000001722582965157926082611083984375,
        "lon": 33.32059600666666909773994120769202709197998046875
    },
    "bbox": {
        "min_lat": 34.70768000000000341742634191177785396575927734375,
        "min_lon": 33.3205717000000021243977244012057781219482421875,
        "max_lat": 34.7077316999999965219103614799678325653076171875,
        "max_lon": 33.32062169999999667879819753579795360565185546875
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Sts🛰️✗ Northern Baltic Sea Surveillance Zone
Oct 31, 2026 20:37 UTC 95/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9363780 (TWINKLE STAR) MARSHALL ISLANDS
  • Minimum Distance: 73 meters
  • Average Distance: 75 meters
  • Duration: 6h 9m
  • Period: 2026-10-31T20:37:54+00:00 to 2026-11-01T02:46:55+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 73m, avg 75m) for 369 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 73m, avg 75m
Duration25/25Duration 369 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-11-01T03:15:01.490771+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538005294,
        "imo": 9363780,
        "name": "TWINKLE STAR",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 73.2000000000000028421709430404007434844970703125,
    "avg_distance_m": 75.2000000000000028421709430404007434844970703125,
    "distance_consistency_m": 1.1999999999999999555910790149937383830547332763671875,
    "duration_minutes": 369,
    "overlap_duration_s": 22141,
    "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": "2026-10-31T20:37:54+00:00",
        "end": "2026-11-01T02:46:55+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 73m, avg 75m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 369 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: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 73m, avg 75m) for 369 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70791229999999671917976229451596736907958984375,
            "lon": 33.32028170000000244499460677616298198699951171875
        },
        "time_window": {
            "start_ts": "2026-10-31T20:37:54+00:00",
            "end_ts": "2026-11-01T02:46:55+00:00"
        },
        "searched_at": "2026-11-01T03:15:01.490771+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 31, 2026 20:22 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 15 AIS positions
  • Period: 2026-10-31T20:22:56+00:00 to 2026-11-01T02:52:55+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 15,
    "first_point": {
        "ts": "2026-10-31T20:22:56+00:00",
        "lat": 34.70770499999999714191289967857301235198974609375,
        "lon": 33.3206033000000019228536984883248805999755859375
    },
    "last_point": {
        "ts": "2026-11-01T02:52:55+00:00",
        "lat": 34.707701700000001210355549119412899017333984375,
        "lon": 33.32058500000000123009158414788544178009033203125
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Oct 31, 2026 20:22 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 3 meters
  • Data Points: 15 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 2.5,
    "duration_minutes": 390,
    "points": 15,
    "centroid": {
        "lat": 34.70770121999999702211425756104290485382080078125,
        "lon": 33.32060111333333196625972050242125988006591796875
    },
    "bbox": {
        "min_lat": 34.70768000000000341742634191177785396575927734375,
        "min_lon": 33.32058500000000123009158414788544178009033203125,
        "max_lat": 34.70772170000000045320120989345014095306396484375,
        "max_lon": 33.32062169999999667879819753579795360565185546875
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Sts🛰️✗ Northern Baltic Sea Surveillance Zone
Oct 31, 2026 19:34 UTC 95/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9363780 (TWINKLE STAR) MARSHALL ISLANDS
  • Minimum Distance: 74 meters
  • Average Distance: 75 meters
  • Duration: 5h 9m
  • Period: 2026-10-31T19:34:52+00:00 to 2026-11-01T00:44:00+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 74m, avg 75m) for 309 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 74m, avg 75m
Duration25/25Duration 309 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-11-01T01:30:05.110501+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538005294,
        "imo": 9363780,
        "name": "TWINKLE STAR",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 74.2999999999999971578290569595992565155029296875,
    "avg_distance_m": 75.2999999999999971578290569595992565155029296875,
    "distance_consistency_m": 0.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 309.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 18548,
    "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": "2026-10-31T19:34:52+00:00",
        "end": "2026-11-01T00:44:00+00:00"
    },
    "points_count": {
        "vessel_a": 11,
        "vessel_b": 11
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 74m, avg 75m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 309 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: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 74m, avg 75m) for 309 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.7079116000000027497662813402712345123291015625,
            "lon": 33.320282800000001088847056962549686431884765625
        },
        "time_window": {
            "start_ts": "2026-10-31T19:34:52+00:00",
            "end_ts": "2026-11-01T00:44:00+00:00"
        },
        "searched_at": "2026-11-01T01:30:05.110501+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Northern Baltic Sea Surveillance Zone
Oct 31, 2026 19:34 UTC 65/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9490296 (CHEM RANGER) MARSHALL ISLANDS
  • Minimum Distance: 322 meters
  • Average Distance: 325 meters
  • Duration: 48 minutes
  • Period: 2026-10-31T19:34:52+00:00 to 2026-10-31T20:22:56+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (NAVIG8 EXCEED and CHEM RANGER) maintained close proximity (min 322m, avg 325m) for 48 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 322m, avg 325m
Duration10/25Duration 48 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±4m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-11-01T01:30:08.420984+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538004628,
        "imo": 9490296,
        "name": "CHEM RANGER",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 321.69999999999998863131622783839702606201171875,
    "avg_distance_m": 324.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 4.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 48.10000000000000142108547152020037174224853515625,
    "overlap_duration_s": 2884,
    "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": "2026-10-31T19:34:52+00:00",
        "end": "2026-10-31T20:22:56+00:00"
    },
    "points_count": {
        "vessel_a": 2,
        "vessel_b": 2
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 322m, avg 325m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 48 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (NAVIG8 EXCEED and CHEM RANGER) maintained close proximity (min 322m, avg 325m) for 48 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70890539999999901965566095896065235137939453125,
            "lon": 33.3215890999999970745193422771990299224853515625
        },
        "time_window": {
            "start_ts": "2026-10-31T19:34:52+00:00",
            "end_ts": "2026-10-31T20:22:56+00:00"
        },
        "searched_at": "2026-11-01T01:30:08.420984+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 31, 2026 19:34 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 9m
  • Data Points: 14 AIS positions
  • Period: 2026-10-31T19:34:52+00:00 to 2026-11-01T01:43:55+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 369.1000000000000227373675443232059478759765625,
    "points_in_zone": 14,
    "first_point": {
        "ts": "2026-10-31T19:34:52+00:00",
        "lat": 34.7076832999999993489836924709379673004150390625,
        "lon": 33.32058669999999978017513058148324489593505859375
    },
    "last_point": {
        "ts": "2026-11-01T01:43:55+00:00",
        "lat": 34.70770329999999859182935324497520923614501953125,
        "lon": 33.32059000000000281715983874164521694183349609375
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Oct 31, 2026 19:34 UTC 75.0% ▼
  • Duration: 6h 9m
  • Radius: 3 meters
  • Data Points: 14 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 2.5,
    "duration_minutes": 369.1000000000000227373675443232059478759765625,
    "points": 14,
    "centroid": {
        "lat": 34.70769987142856649597888463176786899566650390625,
        "lon": 33.3206023857142810129516874440014362335205078125
    },
    "bbox": {
        "min_lat": 34.70768000000000341742634191177785396575927734375,
        "min_lon": 33.32058669999999978017513058148324489593505859375,
        "max_lat": 34.70772170000000045320120989345014095306396484375,
        "max_lon": 33.32062169999999667879819753579795360565185546875
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Sts🛰️✗ Northern Baltic Sea Surveillance Zone
Oct 31, 2026 18:44 UTC 75/100 ▼
Vessel A: IMO 9490296 (CHEM RANGER) MARSHALL ISLANDS
Vessel B: IMO 9973913 (NAVIG8 EXCEED) Singapore
  • Minimum Distance: 322 meters
  • Average Distance: 326 meters
  • Duration: 1h 41m
  • Period: 2026-10-31T18:44:33+00:00 to 2026-10-31T20:26:29+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (CHEM RANGER and NAVIG8 EXCEED) maintained close proximity (min 322m, avg 326m) for 102 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 322m, avg 326m
Duration20/25Duration 102 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±4m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-10-31T20:45:01.536816+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538004628,
        "imo": 9490296,
        "name": "CHEM RANGER",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "min_distance_m": 321.69999999999998863131622783839702606201171875,
    "avg_distance_m": 326.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 3.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 101.900000000000005684341886080801486968994140625,
    "overlap_duration_s": 6116,
    "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": "2026-10-31T18:44:33+00:00",
        "end": "2026-10-31T20:26:29+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 322m, avg 326m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 102 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b14m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (CHEM RANGER and NAVIG8 EXCEED) maintained close proximity (min 322m, avg 326m) for 102 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.7089114999999992505763657391071319580078125,
            "lon": 33.32159630000000305471985484473407268524169921875
        },
        "time_window": {
            "start_ts": "2026-10-31T18:44:33+00:00",
            "end_ts": "2026-10-31T20:26:29+00:00"
        },
        "searched_at": "2026-10-31T20:45:01.536816+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Northern Baltic Sea Surveillance Zone
Oct 31, 2026 18:37 UTC 95/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9363780 (TWINKLE STAR) MARSHALL ISLANDS
  • Minimum Distance: 74 meters
  • Average Distance: 75 meters
  • Duration: 5h 3m
  • Period: 2026-10-31T18:37:59+00:00 to 2026-10-31T23:40:58+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 74m, avg 75m) for 303 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 74m, avg 75m
Duration25/25Duration 303 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538005294,
        "imo": 9363780,
        "name": "TWINKLE STAR",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 73.5,
    "avg_distance_m": 75.2000000000000028421709430404007434844970703125,
    "distance_consistency_m": 0.90000000000000002220446049250313080847263336181640625,
    "duration_minutes": 303,
    "overlap_duration_s": 18179,
    "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": "2026-10-31T18:37:59+00:00",
        "end": "2026-10-31T23:40:58+00:00"
    },
    "points_count": {
        "vessel_a": 10,
        "vessel_b": 10
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 74m, avg 75m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 303 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: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 74m, avg 75m) for 303 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 31, 2026 18:37 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 35m
  • Data Points: 14 AIS positions
  • Period: 2026-10-31T18:53:02+00:00 to 2026-11-01T01:28:53+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 395.8999999999999772626324556767940521240234375,
    "points_in_zone": 14,
    "first_point": {
        "ts": "2026-10-31T18:53:02+00:00",
        "lat": 34.70769500000000107320374809205532073974609375,
        "lon": 33.32059170000000136724338517524302005767822265625
    },
    "last_point": {
        "ts": "2026-11-01T01:28:53+00:00",
        "lat": 34.70772170000000045320120989345014095306396484375,
        "lon": 33.32059670000000295431163976900279521942138671875
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Oct 31, 2026 18:37 UTC 75.0% ▼
  • Duration: 6h 35m
  • Radius: 3 meters
  • Data Points: 14 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 2.5,
    "duration_minutes": 395.8999999999999772626324556767940521240234375,
    "points": 14,
    "centroid": {
        "lat": 34.707699278571425338668632321059703826904296875,
        "lon": 33.32060250714285842832396156154572963714599609375
    },
    "bbox": {
        "min_lat": 34.70768000000000341742634191177785396575927734375,
        "min_lon": 33.32058669999999978017513058148324489593505859375,
        "max_lat": 34.70772170000000045320120989345014095306396484375,
        "max_lon": 33.32062169999999667879819753579795360565185546875
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Sts🛰️✗ Northern Baltic Sea Surveillance Zone
Oct 31, 2026 17:22 UTC 70/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9913626 (YELLOW STARS) MARSHALL ISLANDS
  • Minimum Distance: 305 meters
  • Average Distance: 308 meters
  • Duration: 1h 15m
  • Period: 2026-10-31T17:22:59+00:00 to 2026-10-31T18:37:59+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (NAVIG8 EXCEED and YELLOW STARS) maintained close proximity (min 305m, avg 308m) for 75 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 305m, avg 308m
Duration15/25Duration 75 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±3m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-10-31T20:15:02.114789+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538009099,
        "imo": 9913626,
        "name": "YELLOW STARS",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 305.1000000000000227373675443232059478759765625,
    "avg_distance_m": 307.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 2.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 75,
    "overlap_duration_s": 4500,
    "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": "2026-10-31T17:22:59+00:00",
        "end": "2026-10-31T18:37:59+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 305m, avg 308m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 75 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (NAVIG8 EXCEED and YELLOW STARS) maintained close proximity (min 305m, avg 308m) for 75 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70868250000000188038029591552913188934326171875,
            "lon": 33.321773100000001477383193559944629669189453125
        },
        "time_window": {
            "start_ts": "2026-10-31T17:22:59+00:00",
            "end_ts": "2026-10-31T18:37:59+00:00"
        },
        "searched_at": "2026-10-31T20:15:02.114789+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Northern Baltic Sea Surveillance Zone
Oct 31, 2026 17:22 UTC 80/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9490296 (CHEM RANGER) MARSHALL ISLANDS
  • Minimum Distance: 322 meters
  • Average Distance: 327 meters
  • Duration: 2h 59m
  • Period: 2026-10-31T17:22:59+00:00 to 2026-10-31T20:22:56+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and CHEM RANGER) maintained close proximity (min 322m, avg 327m) for 180 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 322m, avg 327m
Duration25/25Duration 180 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±3m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-10-31T22:30:02.183889+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538004628,
        "imo": 9490296,
        "name": "CHEM RANGER",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 321.69999999999998863131622783839702606201171875,
    "avg_distance_m": 327,
    "distance_consistency_m": 3.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 179.900000000000005684341886080801486968994140625,
    "overlap_duration_s": 10797,
    "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": "2026-10-31T17:22:59+00:00",
        "end": "2026-10-31T20:22:56+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 322m, avg 327m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 180 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and CHEM RANGER) maintained close proximity (min 322m, avg 327m) for 180 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.7089112999999969133568811230361461639404296875,
            "lon": 33.3216010000000011359588825143873691558837890625
        },
        "time_window": {
            "start_ts": "2026-10-31T17:22:59+00:00",
            "end_ts": "2026-10-31T20:22:56+00:00"
        },
        "searched_at": "2026-10-31T22:30:02.183889+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 31, 2026 17:22 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 35m
  • Data Points: 14 AIS positions
  • Period: 2026-10-31T17:22:59+00:00 to 2026-10-31T23:58:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 395.8999999999999772626324556767940521240234375,
    "points_in_zone": 14,
    "first_point": {
        "ts": "2026-10-31T17:22:59+00:00",
        "lat": 34.707678299999997761915437877178192138671875,
        "lon": 33.3206050000000004729372449219226837158203125
    },
    "last_point": {
        "ts": "2026-10-31T23:58:56+00:00",
        "lat": 34.70769829999999700476109865121543407440185546875,
        "lon": 33.3205932999999987487171893008053302764892578125
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Oct 31, 2026 17:22 UTC 75.0% ▼
  • Duration: 6h 35m
  • Radius: 3 meters
  • Data Points: 14 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 2.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 395.8999999999999772626324556767940521240234375,
    "points": 14,
    "centroid": {
        "lat": 34.7076962999999949488483252935111522674560546875,
        "lon": 33.320599057142857191138318739831447601318359375
    },
    "bbox": {
        "min_lat": 34.707678299999997761915437877178192138671875,
        "min_lon": 33.3205717000000021243977244012057781219482421875,
        "max_lat": 34.70770999999999872898115427233278751373291015625,
        "max_lon": 33.32062169999999667879819753579795360565185546875
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Sts🛰️✗ Northern Baltic Sea Surveillance Zone
Oct 31, 2026 15:40 UTC 90/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9363780 (TWINKLE STAR) MARSHALL ISLANDS
  • Minimum Distance: 77 meters
  • Average Distance: 77 meters
  • Duration: 1h 42m
  • Period: 2026-10-31T15:40:57+00:00 to 2026-10-31T17:22:59+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 76m, avg 77m) for 102 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 76m, avg 77m
Duration20/25Duration 102 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±0m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-10-31T18:15:01.648008+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538005294,
        "imo": 9363780,
        "name": "TWINKLE STAR",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 76.5,
    "avg_distance_m": 76.599999999999994315658113919198513031005859375,
    "distance_consistency_m": 0.1000000000000000055511151231257827021181583404541015625,
    "duration_minutes": 102,
    "overlap_duration_s": 6122,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-10-31T15:40:57+00:00",
        "end": "2026-10-31T17:22:59+00:00"
    },
    "points_count": {
        "vessel_a": 2,
        "vessel_b": 2
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 76m, avg 77m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 102 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b10m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 76m, avg 77m) for 102 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70789959999999751971699879504740238189697265625,
            "lon": 33.3202849999999983765519573353230953216552734375
        },
        "time_window": {
            "start_ts": "2026-10-31T15:40:57+00:00",
            "end_ts": "2026-10-31T17:22:59+00:00"
        },
        "searched_at": "2026-10-31T18:15:01.648008+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Northern Baltic Sea Surveillance Zone
Oct 31, 2026 15:16 UTC 80/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9490296 (CHEM RANGER) MARSHALL ISLANDS
  • Minimum Distance: 322 meters
  • Average Distance: 327 meters
  • Duration: 5h 6m
  • Period: 2026-10-31T15:16:54+00:00 to 2026-10-31T20:22:56+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and CHEM RANGER) maintained close proximity (min 322m, avg 327m) for 306 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 322m, avg 327m
Duration25/25Duration 306 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±3m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-10-31T21:00:01.439938+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538004628,
        "imo": 9490296,
        "name": "CHEM RANGER",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 321.69999999999998863131622783839702606201171875,
    "avg_distance_m": 327.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 3,
    "duration_minutes": 306,
    "overlap_duration_s": 18362,
    "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": "2026-10-31T15:16:54+00:00",
        "end": "2026-10-31T20:22:56+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 322m, avg 327m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 306 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and CHEM RANGER) maintained close proximity (min 322m, avg 327m) for 306 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.708912499999996725819073617458343505859375,
            "lon": 33.32160069999999763012965559028089046478271484375
        },
        "time_window": {
            "start_ts": "2026-10-31T15:16:54+00:00",
            "end_ts": "2026-10-31T20:22:56+00:00"
        },
        "searched_at": "2026-10-31T21:00:01.439938+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 31, 2026 15:16 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 24m
  • Data Points: 12 AIS positions
  • Period: 2026-10-31T15:16:54+00:00 to 2026-10-31T21:40:59+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 384.1000000000000227373675443232059478759765625,
    "points_in_zone": 12,
    "first_point": {
        "ts": "2026-10-31T15:16:54+00:00",
        "lat": 34.707684999999997899067238904535770416259765625,
        "lon": 33.3206066999999990230207913555204868316650390625
    },
    "last_point": {
        "ts": "2026-10-31T21:40:59+00:00",
        "lat": 34.70769829999999700476109865121543407440185546875,
        "lon": 33.320594999999997298800735734403133392333984375
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Oct 31, 2026 15:16 UTC 75.0% ▼
  • Duration: 6h 24m
  • Radius: 2 meters
  • Data Points: 12 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 2.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 384.1000000000000227373675443232059478759765625,
    "points": 12,
    "centroid": {
        "lat": 34.70769291666666589435408241115510463714599609375,
        "lon": 33.32059792500000838799678604118525981903076171875
    },
    "bbox": {
        "min_lat": 34.707678299999997761915437877178192138671875,
        "min_lon": 33.3205717000000021243977244012057781219482421875,
        "max_lat": 34.70770999999999872898115427233278751373291015625,
        "max_lon": 33.3206100000000020600054995156824588775634765625
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Sts Northern Baltic Sea Surveillance Zone
Oct 31, 2026 14:23 UTC 80/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9490296 (CHEM RANGER) MARSHALL ISLANDS
  • Minimum Distance: 318 meters
  • Average Distance: 326 meters
  • Duration: 3h 15m
  • Period: 2026-10-31T14:19:53+00:00 to 2026-10-31T17:34:56+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and CHEM RANGER) maintained close proximity (min 318m, avg 326m) for 195 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 318m, avg 326m
Duration25/25Duration 195 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±6m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538004628,
        "imo": 9490296,
        "name": "CHEM RANGER",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 317.5,
    "avg_distance_m": 325.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 5.5,
    "duration_minutes": 195.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 11703,
    "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": "2026-10-31T14:19:53+00:00",
        "end": "2026-10-31T17:34:56+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 318m, avg 326m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 195 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b16m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and CHEM RANGER) maintained close proximity (min 318m, avg 326m) for 195 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 31, 2026 14:19 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 18m
  • Data Points: 12 AIS positions
  • Period: 2026-10-31T14:19:53+00:00 to 2026-10-31T20:37:54+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 378,
    "points_in_zone": 12,
    "first_point": {
        "ts": "2026-10-31T14:19:53+00:00",
        "lat": 34.7077000000000026602720026858150959014892578125,
        "lon": 33.32062169999999667879819753579795360565185546875
    },
    "last_point": {
        "ts": "2026-10-31T20:37:54+00:00",
        "lat": 34.7076899999999994861354934982955455780029296875,
        "lon": 33.320601699999997435952536761760711669921875
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Oct 31, 2026 14:19 UTC 75.0% ▼
  • Duration: 6h 18m
  • Radius: 3 meters
  • Data Points: 12 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 2.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 378,
    "points": 12,
    "centroid": {
        "lat": 34.70769250000000027966962079517543315887451171875,
        "lon": 33.32060209999999500496414839290082454681396484375
    },
    "bbox": {
        "min_lat": 34.707678299999997761915437877178192138671875,
        "min_lon": 33.3205717000000021243977244012057781219482421875,
        "max_lat": 34.70770999999999872898115427233278751373291015625,
        "max_lon": 33.32062169999999667879819753579795360565185546875
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Sts🛰️✗ Northern Baltic Sea Surveillance Zone
Oct 31, 2026 11:25 UTC 95/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9363780 (TWINKLE STAR) MARSHALL ISLANDS
  • Minimum Distance: 77 meters
  • Average Distance: 77 meters
  • Duration: 2h 57m
  • Period: 2026-10-31T11:25:50+00:00 to 2026-10-31T14:22:56+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 77m, avg 77m) for 177 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 77m, avg 77m
Duration25/25Duration 177 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±0m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-10-31T17:45:01.947549+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538005294,
        "imo": 9363780,
        "name": "TWINKLE STAR",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 76.7000000000000028421709430404007434844970703125,
    "avg_distance_m": 77.400000000000005684341886080801486968994140625,
    "distance_consistency_m": 0.5,
    "duration_minutes": 177.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 10626,
    "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": "2026-10-31T11:25:50+00:00",
        "end": "2026-10-31T14:22:56+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 77m, avg 77m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 177 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: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 77m, avg 77m) for 177 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.7079149999999998499333742074668407440185546875,
            "lon": 33.32029479999999921346898190677165985107421875
        },
        "time_window": {
            "start_ts": "2026-10-31T11:25:50+00:00",
            "end_ts": "2026-10-31T14:22:56+00:00"
        },
        "searched_at": "2026-10-31T17:45:01.947549+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Northern Baltic Sea Surveillance Zone
Oct 31, 2026 11:18 UTC 60/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9686716 (STI DAMA) MARSHALL ISLANDS
  • Minimum Distance: 311 meters
  • Average Distance: 315 meters
  • Duration: 34 minutes
  • Period: 2026-10-31T11:18:31+00:00 to 2026-10-31T11:52:56+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 60/100

Moderate-confidence STS candidate. Two tankers (NAVIG8 EXCEED and STI DAMA) maintained close proximity (min 311m, avg 315m) for 34 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 311m, avg 315m
Duration5/25Duration 34 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±3m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-10-31T12:15:45.346633+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538005173,
        "imo": 9686716,
        "name": "STI DAMA",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 310.80000000000001136868377216160297393798828125,
    "avg_distance_m": 315.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 3.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 34.39999999999999857891452847979962825775146484375,
    "overlap_duration_s": 2065,
    "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": "2026-10-31T11:18:31+00:00",
        "end": "2026-10-31T11:52:56+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 60,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 311m, avg 315m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 34 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b13m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (NAVIG8 EXCEED and STI DAMA) maintained close proximity (min 311m, avg 315m) for 34 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70890750000000224417817662470042705535888671875,
            "lon": 33.32155149999999821375240571796894073486328125
        },
        "time_window": {
            "start_ts": "2026-10-31T11:18:31+00:00",
            "end_ts": "2026-10-31T11:52:56+00:00"
        },
        "searched_at": "2026-10-31T12:15:45.346633+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Northern Baltic Sea Surveillance Zone
Oct 31, 2026 11:15 UTC 80/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9913626 (YELLOW STARS) MARSHALL ISLANDS
  • Minimum Distance: 306 meters
  • Average Distance: 308 meters
  • Duration: 3h 7m
  • Period: 2026-10-31T11:15:21+00:00 to 2026-10-31T14:22:56+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and YELLOW STARS) maintained close proximity (min 306m, avg 308m) for 188 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 306m, avg 308m
Duration25/25Duration 188 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538009099,
        "imo": 9913626,
        "name": "YELLOW STARS",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 305.69999999999998863131622783839702606201171875,
    "avg_distance_m": 308.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 1.1999999999999999555910790149937383830547332763671875,
    "duration_minutes": 187.599999999999994315658113919198513031005859375,
    "overlap_duration_s": 11255,
    "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": "2026-10-31T11:15:21+00:00",
        "end": "2026-10-31T14:22:56+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 306m, avg 308m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 188 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: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and YELLOW STARS) maintained close proximity (min 306m, avg 308m) for 188 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 31, 2026 11:06 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 28m
  • Data Points: 14 AIS positions
  • Period: 2026-10-31T11:06:43+00:00 to 2026-10-31T17:34:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 388.19999999999998863131622783839702606201171875,
    "points_in_zone": 14,
    "first_point": {
        "ts": "2026-10-31T11:06:43+00:00",
        "lat": 34.70771169999999727906470070593059062957763671875,
        "lon": 33.32062330000000116569935926236212253570556640625
    },
    "last_point": {
        "ts": "2026-10-31T17:34:56+00:00",
        "lat": 34.70769500000000107320374809205532073974609375,
        "lon": 33.320598300000000335785443894565105438232421875
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Oct 31, 2026 11:06 UTC 75.0% ▼
  • Duration: 6h 28m
  • Radius: 4 meters
  • Data Points: 14 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3.5,
    "duration_minutes": 388.19999999999998863131622783839702606201171875,
    "points": 14,
    "centroid": {
        "lat": 34.70769857857143136925515136681497097015380859375,
        "lon": 33.32062214285713963590751518495380878448486328125
    },
    "bbox": {
        "min_lat": 34.707678299999997761915437877178192138671875,
        "min_lon": 33.320598300000000335785443894565105438232421875,
        "max_lat": 34.70772170000000045320120989345014095306396484375,
        "max_lon": 33.3206483000000019956132746301591396331787109375
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Sts Northern Baltic Sea Surveillance Zone
Oct 31, 2026 10:54 UTC 95/100 ▼
Vessel A: IMO 9973913 (NAVIG8 EXCEED) Singapore
Vessel B: IMO 9363780 (TWINKLE STAR) MARSHALL ISLANDS
  • Minimum Distance: 76 meters
  • Average Distance: 77 meters
  • Duration: 3h 28m
  • Period: 2026-10-31T10:54:08+00:00 to 2026-10-31T14:22:56+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Northern Baltic Sea Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 76m, avg 77m) for 209 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 Northern Baltic Sea Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 76m, avg 77m
Duration25/25Duration 209 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563257500,
        "imo": 9973913,
        "name": "NAVIG8 EXCEED",
        "flag": "Singapore"
    },
    "vessel_b": {
        "mmsi": 538005294,
        "imo": 9363780,
        "name": "TWINKLE STAR",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 75.5,
    "avg_distance_m": 77.099999999999994315658113919198513031005859375,
    "distance_consistency_m": 0.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 208.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 12528,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-10-31T10:54:08+00:00",
        "end": "2026-10-31T14:22:56+00:00"
    },
    "points_count": {
        "vessel_a": 11,
        "vessel_b": 11
    },
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 76m, avg 77m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 209 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: Northern Baltic Sea Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (NAVIG8 EXCEED and TWINKLE STAR) maintained close proximity (min 76m, avg 77m) for 209 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 Northern Baltic Sea Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Oct 31, 2026 10:54 UTC 75.0% ▼
  • Duration: 6h 34m
  • Radius: 3 meters
  • Data Points: 15 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 394.80000000000001136868377216160297393798828125,
    "points": 15,
    "centroid": {
        "lat": 34.70770000666666277311378507874906063079833984375,
        "lon": 33.3206226733333323863917030394077301025390625
    },
    "bbox": {
        "min_lat": 34.707678299999997761915437877178192138671875,
        "min_lon": 33.3206050000000004729372449219226837158203125,
        "max_lat": 34.70772170000000045320120989345014095306396484375,
        "max_lon": 33.3206483000000019956132746301591396331787109375
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 31, 2026 10:11 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 34m
  • Data Points: 15 AIS positions
  • Period: 2026-10-31T10:54:08+00:00 to 2026-10-31T17:28:57+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 394.80000000000001136868377216160297393798828125,
    "points_in_zone": 15,
    "first_point": {
        "ts": "2026-10-31T10:54:08+00:00",
        "lat": 34.70769829999999700476109865121543407440185546875,
        "lon": 33.320611700000000610089045949280261993408203125
    },
    "last_point": {
        "ts": "2026-10-31T17:28:57+00:00",
        "lat": 34.70770999999999872898115427233278751373291015625,
        "lon": 33.3206066999999990230207913555204868316650390625
    }
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 31, 2026 09:00 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 16m
  • Data Points: 24 AIS positions
  • Period: 2026-10-31T09:24:37+00:00 to 2026-10-31T15:40:57+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 376.30000000000001136868377216160297393798828125,
    "points_in_zone": 24,
    "first_point": {
        "ts": "2026-10-31T09:24:37+00:00",
        "lat": 34.69902830000000193422238226048648357391357421875,
        "lon": 33.35507499999999936335370875895023345947265625
    },
    "last_point": {
        "ts": "2026-10-31T15:40:57+00:00",
        "lat": 34.70768170000000196750988834537565708160400390625,
        "lon": 33.3206100000000020600054995156824588775634765625
    }
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 31, 2026 08:03 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 31m
  • Data Points: 25 AIS positions
  • Period: 2026-10-31T08:45:32+00:00 to 2026-10-31T15:16:54+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 391.3999999999999772626324556767940521240234375,
    "points_in_zone": 25,
    "first_point": {
        "ts": "2026-10-31T08:45:32+00:00",
        "lat": 34.698998299999999517240212298929691314697265625,
        "lon": 33.35507499999999936335370875895023345947265625
    },
    "last_point": {
        "ts": "2026-10-31T15:16:54+00:00",
        "lat": 34.707684999999997899067238904535770416259765625,
        "lon": 33.3206066999999990230207913555204868316650390625
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Oct 31, 2026 08:03 UTC 75.0% ▼
  • Duration: 2h 8m
  • Radius: 543 meters
  • Data Points: 11 AIS positions
  • Centroid: 34.6987, 33.3544
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 542.8999999999999772626324556767940521240234375,
    "duration_minutes": 128,
    "points": 11,
    "centroid": {
        "lat": 34.69872316363636599589881370775401592254638671875,
        "lon": 33.354439081818185286465450190007686614990234375
    },
    "bbox": {
        "min_lat": 34.69799830000000184782038559205830097198486328125,
        "min_lon": 33.348534999999998262865119613707065582275390625,
        "max_lat": 34.69902830000000193422238226048648357391357421875,
        "max_lon": 33.355535000000003265085979364812374114990234375
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 31, 2026 07:06 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 4h 46m
  • Data Points: 27 AIS positions
  • Period: 2026-10-31T07:06:36+00:00 to 2026-10-31T11:52:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 286.30000000000001136868377216160297393798828125,
    "points_in_zone": 27,
    "first_point": {
        "ts": "2026-10-31T07:06:36+00:00",
        "lat": 34.6974383000000017318598111160099506378173828125,
        "lon": 33.35585329999999970596036291681230068206787109375
    },
    "last_point": {
        "ts": "2026-10-31T11:52:56+00:00",
        "lat": 34.70772170000000045320120989345014095306396484375,
        "lon": 33.3206483000000019956132746301591396331787109375
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Oct 31, 2026 07:06 UTC 75.0% ▼
  • Duration: 3h 5m
  • Radius: 562 meters
  • Data Points: 13 AIS positions
  • Centroid: 34.6986, 33.3547
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 562.1000000000000227373675443232059478759765625,
    "duration_minutes": 185,
    "points": 13,
    "centroid": {
        "lat": 34.69857741538461226582512608729302883148193359375,
        "lon": 33.354661784615387887242832221090793609619140625
    },
    "bbox": {
        "min_lat": 34.6974383000000017318598111160099506378173828125,
        "min_lon": 33.348534999999998262865119613707065582275390625,
        "max_lat": 34.69902830000000193422238226048648357391357421875,
        "max_lon": 33.355919999999997571649146266281604766845703125
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 31, 2026 06:03 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 5h 49m
  • Data Points: 32 AIS positions
  • Period: 2026-10-31T06:03:34+00:00 to 2026-10-31T11:52:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 349.3999999999999772626324556767940521240234375,
    "points_in_zone": 32,
    "first_point": {
        "ts": "2026-10-31T06:03:34+00:00",
        "lat": 34.69675670000000167192411026917397975921630859375,
        "lon": 33.35554669999999788387867738492786884307861328125
    },
    "last_point": {
        "ts": "2026-10-31T11:52:56+00:00",
        "lat": 34.70772170000000045320120989345014095306396484375,
        "lon": 33.3206483000000019956132746301591396331787109375
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Oct 31, 2026 06:03 UTC 75.0% ▼
  • Duration: 4h 8m
  • Radius: 587 meters
  • Data Points: 18 AIS positions
  • Centroid: 34.6981, 33.3549
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 587.299999999999954525264911353588104248046875,
    "duration_minutes": 248,
    "points": 18,
    "centroid": {
        "lat": 34.6981086888888938801756012253463268280029296875,
        "lon": 33.35494092222221951260507921688258647918701171875
    },
    "bbox": {
        "min_lat": 34.69675670000000167192411026917397975921630859375,
        "min_lon": 33.348534999999998262865119613707065582275390625,
        "max_lat": 34.69902830000000193422238226048648357391357421875,
        "max_lon": 33.355919999999997571649146266281604766845703125
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 31, 2026 05:00 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 13m
  • Data Points: 34 AIS positions
  • Period: 2026-10-31T05:39:37+00:00 to 2026-10-31T11:52:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 373.30000000000001136868377216160297393798828125,
    "points_in_zone": 34,
    "first_point": {
        "ts": "2026-10-31T05:39:37+00:00",
        "lat": 34.69680000000000319460013997741043567657470703125,
        "lon": 33.355670000000003483364707790315151214599609375
    },
    "last_point": {
        "ts": "2026-10-31T11:52:56+00:00",
        "lat": 34.70772170000000045320120989345014095306396484375,
        "lon": 33.3206483000000019956132746301591396331787109375
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Oct 31, 2026 05:00 UTC 75.0% ▼
  • Duration: 5h 10m
  • Radius: 608 meters
  • Data Points: 24 AIS positions
  • Centroid: 34.6978, 33.3551
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 607.700000000000045474735088646411895751953125,
    "duration_minutes": 310.8999999999999772626324556767940521240234375,
    "points": 24,
    "centroid": {
        "lat": 34.69780908749999781548467581160366535186767578125,
        "lon": 33.35514034999999921637936495244503021240234375
    },
    "bbox": {
        "min_lat": 34.69671670000000318623278872109949588775634765625,
        "min_lon": 33.348534999999998262865119613707065582275390625,
        "max_lat": 34.69902830000000193422238226048648357391357421875,
        "max_lon": 33.355919999999997571649146266281604766845703125
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 31, 2026 04:00 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 34m
  • Data Points: 32 AIS positions
  • Period: 2026-10-31T04:24:37+00:00 to 2026-10-31T10:59:34+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 394.8999999999999772626324556767940521240234375,
    "points_in_zone": 32,
    "first_point": {
        "ts": "2026-10-31T04:24:37+00:00",
        "lat": 34.69675500000000312184056383557617664337158203125,
        "lon": 33.3555266999999986410330166108906269073486328125
    },
    "last_point": {
        "ts": "2026-10-31T10:59:34+00:00",
        "lat": 34.70771669999999886613295529969036579132080078125,
        "lon": 33.3206167000000021971573005430400371551513671875
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Oct 31, 2026 04:00 UTC 75.0% ▼
  • Duration: 6h 10m
  • Radius: 614 meters
  • Data Points: 27 AIS positions
  • Centroid: 34.6977, 33.3552
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 613.6000000000000227373675443232059478759765625,
    "duration_minutes": 370.8999999999999772626324556767940521240234375,
    "points": 27,
    "centroid": {
        "lat": 34.69769276666666968367280787788331508636474609375,
        "lon": 33.35519092962963583204327733255922794342041015625
    },
    "bbox": {
        "min_lat": 34.69671670000000318623278872109949588775634765625,
        "min_lon": 33.348534999999998262865119613707065582275390625,
        "max_lat": 34.69902830000000193422238226048648357391357421875,
        "max_lon": 33.355919999999997571649146266281604766845703125
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 31, 2026 03:12 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 32m
  • Data Points: 30 AIS positions
  • Period: 2026-10-31T03:57:34+00:00 to 2026-10-31T10:29:43+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 392.1000000000000227373675443232059478759765625,
    "points_in_zone": 30,
    "first_point": {
        "ts": "2026-10-31T03:57:34+00:00",
        "lat": 34.69683830000000313020791509188711643218994140625,
        "lon": 33.355666700000000446379999630153179168701171875
    },
    "last_point": {
        "ts": "2026-10-31T10:29:43+00:00",
        "lat": 34.70403999999999911096892901696264743804931640625,
        "lon": 33.334706699999998136263457126915454864501953125
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Oct 31, 2026 03:12 UTC 75.0% ▼
  • Duration: 6h 14m
  • Radius: 616 meters
  • Data Points: 28 AIS positions
  • Centroid: 34.6977, 33.3552
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 615.6000000000000227373675443232059478759765625,
    "duration_minutes": 374,
    "points": 28,
    "centroid": {
        "lat": 34.69766225000000048339643399231135845184326171875,
        "lon": 33.35520792142857970929981092922389507293701171875
    },
    "bbox": {
        "min_lat": 34.69671670000000318623278872109949588775634765625,
        "min_lon": 33.348534999999998262865119613707065582275390625,
        "max_lat": 34.69902830000000193422238226048648357391357421875,
        "max_lon": 33.355919999999997571649146266281604766845703125
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 31, 2026 02:39 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 21m
  • Data Points: 25 AIS positions
  • Period: 2026-10-31T02:39:40+00:00 to 2026-10-31T09:00:39+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 381,
    "points_in_zone": 25,
    "first_point": {
        "ts": "2026-10-31T02:39:40+00:00",
        "lat": 34.69689000000000334011929226107895374298095703125,
        "lon": 33.35567499999999796500560478307306766510009765625
    },
    "last_point": {
        "ts": "2026-10-31T09:00:39+00:00",
        "lat": 34.69898330000000186146280611865222454071044921875,
        "lon": 33.35509330000000005611582309938967227935791015625
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Oct 31, 2026 02:39 UTC 75.0% ▼
  • Duration: 6h 21m
  • Radius: 191 meters
  • Data Points: 25 AIS positions
  • Centroid: 34.6973, 33.3556
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 190.69999999999998863131622783839702606201171875,
    "duration_minutes": 381,
    "points": 25,
    "centroid": {
        "lat": 34.6973349240000032978059607557952404022216796875,
        "lon": 33.3556004759999922271163086406886577606201171875
    },
    "bbox": {
        "min_lat": 34.6967082999999973935700836591422557830810546875,
        "min_lon": 33.35507499999999936335370875895023345947265625,
        "max_lat": 34.698998299999999517240212298929691314697265625,
        "max_lon": 33.355919999999997571649146266281604766845703125
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 31, 2026 01:06 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 18m
  • Data Points: 22 AIS positions
  • Period: 2026-10-31T01:45:37+00:00 to 2026-10-31T08:03:36+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 378,
    "points_in_zone": 22,
    "first_point": {
        "ts": "2026-10-31T01:45:37+00:00",
        "lat": 34.69681829999999678193489671684801578521728515625,
        "lon": 33.355698300000000244835973717272281646728515625
    },
    "last_point": {
        "ts": "2026-10-31T08:03:36+00:00",
        "lat": 34.698610000000002173692337237298488616943359375,
        "lon": 33.355535000000003265085979364812374114990234375
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Oct 31, 2026 01:06 UTC 75.0% ▼
  • Duration: 6h 18m
  • Radius: 177 meters
  • Data Points: 22 AIS positions
  • Centroid: 34.6970, 33.3557
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 177.19999999999998863131622783839702606201171875,
    "duration_minutes": 378,
    "points": 22,
    "centroid": {
        "lat": 34.697017186363638074908521957695484161376953125,
        "lon": 33.355683722727263784690876491367816925048828125
    },
    "bbox": {
        "min_lat": 34.6967082999999973935700836591422557830810546875,
        "min_lon": 33.3555266999999986410330166108906269073486328125,
        "max_lat": 34.698610000000002173692337237298488616943359375,
        "max_lon": 33.355919999999997571649146266281604766845703125
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 31, 2026 00:12 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 33m
  • Data Points: 25 AIS positions
  • Period: 2026-10-31T00:54:39+00:00 to 2026-10-31T07:27:43+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 393.1000000000000227373675443232059478759765625,
    "points_in_zone": 25,
    "first_point": {
        "ts": "2026-10-31T00:54:39+00:00",
        "lat": 34.696781700000002501838025636970996856689453125,
        "lon": 33.355621700000000373620423488318920135498046875
    },
    "last_point": {
        "ts": "2026-10-31T07:27:43+00:00",
        "lat": 34.6981133000000028232534532435238361358642578125,
        "lon": 33.355919999999997571649146266281604766845703125
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Oct 31, 2026 00:12 UTC 75.0% ▼
  • Duration: 6h 33m
  • Radius: 136 meters
  • Data Points: 25 AIS positions
  • Centroid: 34.6969, 33.3557
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 135.69999999999998863131622783839702606201171875,
    "duration_minutes": 393.1000000000000227373675443232059478759765625,
    "points": 25,
    "centroid": {
        "lat": 34.6969069240000038689686334691941738128662109375,
        "lon": 33.35567207599999761669096187688410282135009765625
    },
    "bbox": {
        "min_lat": 34.696674999999999045030563138425350189208984375,
        "min_lon": 33.3555233000000015408659237436950206756591796875,
        "max_lat": 34.6981133000000028232534532435238361358642578125,
        "max_lon": 33.355919999999997571649146266281604766845703125
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 30, 2026 23:06 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 27m
  • Data Points: 23 AIS positions
  • Period: 2026-10-30T23:36:34+00:00 to 2026-10-31T06:03:34+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 387,
    "points_in_zone": 23,
    "first_point": {
        "ts": "2026-10-30T23:36:34+00:00",
        "lat": 34.6969466999999980316715664230287075042724609375,
        "lon": 33.355801700000000664658728055655956268310546875
    },
    "last_point": {
        "ts": "2026-10-31T06:03:34+00:00",
        "lat": 34.69675670000000167192411026917397975921630859375,
        "lon": 33.35554669999999788387867738492786884307861328125
    }
}
Methodology: 2026.01.18
Loiter Northern Baltic Sea Surveillance Zone
Oct 30, 2026 23:06 UTC 75.0% ▼
  • Duration: 6h 27m
  • Radius: 24 meters
  • Data Points: 23 AIS positions
  • Centroid: 34.6968, 33.3557
  • Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 24,
    "duration_minutes": 387,
    "points": 23,
    "centroid": {
        "lat": 34.6968272434782676327813533134758472442626953125,
        "lon": 33.35566413913043248840040178038179874420166015625
    },
    "bbox": {
        "min_lat": 34.696674999999999045030563138425350189208984375,
        "min_lon": 33.3555233000000015408659237436950206756591796875,
        "max_lat": 34.6969916999999981044311425648629665374755859375,
        "max_lon": 33.35585669999999680612745578400790691375732421875
    },
    "zone_id": "discovered_039"
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Oct 30, 2026 22:21 UTC 80.0% ▼
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 6h 27m
  • Data Points: 23 AIS positions
  • Period: 2026-10-30T22:48:34+00:00 to 2026-10-31T05:15:40+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 387.1000000000000227373675443232059478759765625,
    "points_in_zone": 23,
    "first_point": {
        "ts": "2026-10-30T22:48:34+00:00",
        "lat": 34.6970017000000012785676517523825168609619140625,
        "lon": 33.35580499999999659621607861481606960296630859375
    },
    "last_point": {
        "ts": "2026-10-31T05:15:40+00:00",
        "lat": 34.69697330000000334848664351738989353179931640625,
        "lon": 33.35585669999999680612745578400790691375732421875
    }
}
Methodology: 2026.01.18

Recent Position Data

Time (UTC) Lat Lon Speed Course Zone
Nov 1 12:34 34.7077 33.3206 0.0 kn 97.0° Northern Baltic Sea Surveillance Zone
Nov 1 12:04 34.7077 33.3206 0.0 kn 97.0° Northern Baltic Sea Surveillance Zone
Nov 1 11:53 34.7077 33.3206 0.0 kn 97.0° Northern Baltic Sea Surveillance Zone
Nov 1 11:37 34.7077 33.3206 0.0 kn 97.0° Northern Baltic Sea Surveillance Zone
Nov 1 11:29 34.7077 33.3206 0.0 kn 97.0° Northern Baltic Sea Surveillance Zone
Nov 1 11:17 34.7077 33.3206 0.0 kn 97.0° Northern Baltic Sea Surveillance Zone
Nov 1 10:53 34.7077 33.3206 0.0 kn 97.0° Northern Baltic Sea Surveillance Zone
Nov 1 10:32 34.7077 33.3206 0.0 kn 97.0° Northern Baltic Sea Surveillance Zone
Nov 1 08:50 34.7077 33.3206 0.0 kn 97.0° Northern Baltic Sea Surveillance Zone
Nov 1 08:38 34.7077 33.3206 0.0 kn 97.0° Northern Baltic Sea Surveillance Zone
Nov 1 08:17 34.7077 33.3206 0.0 kn 97.0° Northern Baltic Sea Surveillance Zone
Nov 1 07:59 34.7077 33.3206 0.0 kn 97.0° Northern Baltic Sea Surveillance Zone
Nov 1 07:04 34.7077 33.3206 0.0 kn 97.0° Northern Baltic Sea Surveillance Zone
Nov 1 06:46 34.7077 33.3206 0.0 kn 97.0° Northern Baltic Sea Surveillance Zone
Nov 1 05:11 34.7077 33.3206 0.0 kn 97.0° Northern Baltic Sea Surveillance Zone
Nov 1 05:04 34.7077 33.3206 0.0 kn 97.0° Northern Baltic Sea Surveillance Zone
Nov 1 04:52 34.7077 33.3206 0.0 kn 97.0° Northern Baltic Sea Surveillance Zone
Nov 1 04:46 34.7077 33.3206 0.0 kn 97.0° Northern Baltic Sea Surveillance Zone
Nov 1 04:40 34.7077 33.3205 0.0 kn 97.0° Northern Baltic Sea Surveillance Zone
Nov 1 04:22 34.7077 33.3206 0.0 kn 97.0° Northern Baltic Sea Surveillance Zone

Showing 20 of 100 recent positions.

Data Source

Vessel observed through FleetLeaks' AIS monitoring system in zones of interest. Identity and position data derived from AIS broadcasts and public maritime databases.

Disclaimer: AIS data can be spoofed or falsified. Vessel identities should be independently verified before making compliance decisions.