TRANS SEA

IMO 9956927

Vessel information

Vessel Name TRANS SEA
IMO Number 9956927
MMSI 352003080
Vessel Type Tanker
Flag 🇵🇦 Panama
Call Sign 3E5967
Length 126 m
Beam 21 m

Detected Events (100)

Zone Dwell Atlantic Iberian Monitoring Zone
Jun 4, 2026 14:00 UTC 80.0% ▼
  • Zone: Atlantic Iberian Monitoring Zone
  • Duration: 1h 47m
  • Data Points: 30 AIS positions
  • Period: 2026-06-04T14:00:20+00:00 to 2026-06-04T15:48:09+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_011",
    "zone_name": "Atlantic Iberian Monitoring Zone",
    "dwell_minutes": 107.7999999999999971578290569595992565155029296875,
    "points_in_zone": 30,
    "first_point": {
        "ts": "2026-06-04T14:00:20+00:00",
        "lat": 36.55968169999999872743501327931880950927734375,
        "lon": -8.6294950000000003598188413889147341251373291015625
    },
    "last_point": {
        "ts": "2026-06-04T15:48:09+00:00",
        "lat": 36.62989830000000068821464083157479763031005859375,
        "lon": -8.9946417000000007391236067633144557476043701171875
    }
}
Methodology: 2026.01.18
Zone Dwell Atlantic Iberian Monitoring Zone
Jun 4, 2026 13:04 UTC 80.0% ▼
  • Zone: Atlantic Iberian Monitoring Zone
  • Duration: 2h 43m
  • Data Points: 52 AIS positions
  • Period: 2026-06-04T13:04:49+00:00 to 2026-06-04T15:48:09+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_011",
    "zone_name": "Atlantic Iberian Monitoring Zone",
    "dwell_minutes": 163.30000000000001136868377216160297393798828125,
    "points_in_zone": 52,
    "first_point": {
        "ts": "2026-06-04T13:04:49+00:00",
        "lat": 36.52450499999999777855919091962277889251708984375,
        "lon": -8.43533670000000057598299463279545307159423828125
    },
    "last_point": {
        "ts": "2026-06-04T15:48:09+00:00",
        "lat": 36.62989830000000068821464083157479763031005859375,
        "lon": -8.9946417000000007391236067633144557476043701171875
    }
}
Methodology: 2026.01.18
Zone Dwell Atlantic Iberian Monitoring Zone
Jun 4, 2026 12:00 UTC 80.0% ▼
  • Zone: Atlantic Iberian Monitoring Zone
  • Duration: 3h 48m
  • Data Points: 84 AIS positions
  • Period: 2026-06-04T12:00:09+00:00 to 2026-06-04T15:48:09+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_011",
    "zone_name": "Atlantic Iberian Monitoring Zone",
    "dwell_minutes": 228,
    "points_in_zone": 84,
    "first_point": {
        "ts": "2026-06-04T12:00:09+00:00",
        "lat": 36.4808967000000023972461349330842494964599609375,
        "lon": -8.20937669999999997116901795379817485809326171875
    },
    "last_point": {
        "ts": "2026-06-04T15:48:09+00:00",
        "lat": 36.62989830000000068821464083157479763031005859375,
        "lon": -8.9946417000000007391236067633144557476043701171875
    }
}
Methodology: 2026.01.18
Zone Dwell Atlantic Iberian Monitoring Zone
Jun 4, 2026 11:26 UTC 80.0% ▼
  • Zone: Atlantic Iberian Monitoring Zone
  • Duration: 4h 21m
  • Data Points: 93 AIS positions
  • Period: 2026-06-04T11:26:49+00:00 to 2026-06-04T15:48:09+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_011",
    "zone_name": "Atlantic Iberian Monitoring Zone",
    "dwell_minutes": 261.30000000000001136868377216160297393798828125,
    "points_in_zone": 93,
    "first_point": {
        "ts": "2026-06-04T11:26:49+00:00",
        "lat": 36.45412830000000070640453486703336238861083984375,
        "lon": -8.0878767000000006959226084291003644466400146484375
    },
    "last_point": {
        "ts": "2026-06-04T15:48:09+00:00",
        "lat": 36.62989830000000068821464083157479763031005859375,
        "lon": -8.9946417000000007391236067633144557476043701171875
    }
}
Methodology: 2026.01.18
Ais Gap🛰️✗ Eastern Mediterranean Sanctioned Vessel Zone
Jun 4, 2026 07:25 UTC 70.0% ▼
  • Gap Duration: 4h 1m
  • Last Seen: 2026-06-04T07:25:41+00:00 at 36.2190, -7.1662 (Zone: Eastern Mediterranean Sanctioned Vessel Zone)
  • Next Seen: 2026-06-04T11:26:49+00:00 at 36.4541, -8.0879

🛰️ Gap Corroboration

✗ No Imagery

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

SAR Imagery (Sentinel-1)

Status: ✗ No SAR coverage

No Sentinel-1 scenes covering corridor and time window

VIIRS Thermal Anomaly

Status: ✗ No detections

No VIIRS thermal/light detections in corridor

Searched: 2026-06-04T11:45:02.181344+00:00

Show Raw Evidence JSON
{
    "gap_minutes": 241.099999999999994315658113919198513031005859375,
    "last_seen": {
        "ts": "2026-06-04T07:25:41+00:00",
        "lat": 36.218975000000000363797880709171295166015625,
        "lon": -7.16618330000000014479155652225017547607421875,
        "sog": 12,
        "zone_id": "discovered_018"
    },
    "next_seen": {
        "ts": "2026-06-04T11:26:49+00:00",
        "lat": 36.45412830000000070640453486703336238861083984375,
        "lon": -8.0878767000000006959226084291003644466400146484375,
        "zone_ids": [
            "discovered_011"
        ]
    },
    "gap_enrichment": {
        "status": "not_found",
        "corridor": {
            "start": {
                "lat": 36.218975000000000363797880709171295166015625,
                "lon": -7.16618330000000014479155652225017547607421875,
                "ts": "2026-06-04T07:25:41+00:00"
            },
            "end": {
                "lat": 36.45412830000000070640453486703336238861083984375,
                "lon": -8.0878767000000006959226084291003644466400146484375,
                "ts": "2026-06-04T11:26:49+00:00"
            },
            "bbox": {
                "min_lat": 36.03879500000000035697667044587433338165283203125,
                "min_lon": -8.311550000000000437694325228221714496612548828125,
                "max_lat": 36.63430799999999720739651820622384548187255859375,
                "max_lon": -6.9425100000000004030198397231288254261016845703125
            },
            "buffer_km": 20
        },
        "sar": {
            "status": "not_found",
            "notes": "No Sentinel-1 scenes covering corridor and time window"
        },
        "viirs": {
            "status": "not_found",
            "notes": "No VIIRS thermal\/light detections in corridor"
        },
        "searched_at": "2026-06-04T11:45:02.181344+00:00"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 18, 2026 11:29 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 29m
  • Data Points: 11 AIS positions
  • Period: 2026-05-18T11:29:49+00:00 to 2026-05-18T17:58:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 389,
    "points_in_zone": 11,
    "first_point": {
        "ts": "2026-05-18T11:29:49+00:00",
        "lat": 31.717091700000000997761162579990923404693603515625,
        "lon": 35.99936670000000304980858345516026020050048828125
    },
    "last_point": {
        "ts": "2026-05-18T17:58:49+00:00",
        "lat": 31.71712670000000144909790833480656147003173828125,
        "lon": 35.99926500000000118006937555037438869476318359375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 18, 2026 11:29 UTC 75.0% ▼
  • Duration: 6h 29m
  • Radius: 10 meters
  • Data Points: 11 AIS positions
  • Centroid: 31.7171, 35.9994
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 10,
    "duration_minutes": 389,
    "points": 11,
    "centroid": {
        "lat": 31.717103181818185220208761165849864482879638671875,
        "lon": 35.99935454545454405206328374333679676055908203125
    },
    "bbox": {
        "min_lat": 31.71706830000000110203473013825714588165283203125,
        "min_lon": 35.99926500000000118006937555037438869476318359375,
        "max_lat": 31.717183299999998524754118989221751689910888671875,
        "max_lon": 35.9994032999999973299054545350372791290283203125
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 15, 2026 11:47 UTC 85/100 ▼
Vessel A: IMO 9956927 (TRANS SEA) Panama
Vessel B: IMO 9611541 (THALIA) Liberia
  • Minimum Distance: 0 meters
  • Average Distance: 1 meters
  • Duration: 1h 18m
  • Period: 2026-05-15T11:47:32+00:00 to 2026-05-15T13:05:46+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (TRANS SEA and THALIA) maintained close proximity (min 0m, avg 1m) 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 Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 1m
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: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "min_distance_m": 0.200000000000000011102230246251565404236316680908203125,
    "avg_distance_m": 1.3000000000000000444089209850062616169452667236328125,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 78.2000000000000028421709430404007434844970703125,
    "overlap_duration_s": 4694,
    "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": "2026-05-15T11:47:32+00:00",
        "end": "2026-05-15T13:05:46+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 1m"
            },
            "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: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS SEA and THALIA) maintained close proximity (min 0m, avg 1m) 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 Eastern Mediterranean Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 15, 2026 11:30 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 1h 34m
  • Data Points: 14 AIS positions
  • Period: 2026-05-15T11:30:53+00:00 to 2026-05-15T13:05:46+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 94.900000000000005684341886080801486968994140625,
    "points_in_zone": 14,
    "first_point": {
        "ts": "2026-05-15T11:30:53+00:00",
        "lat": 31.71716669999999993478922988288104534149169921875,
        "lon": 35.9994166999999976042090565897524356842041015625
    },
    "last_point": {
        "ts": "2026-05-15T13:05:46+00:00",
        "lat": 31.717091700000000997761162579990923404693603515625,
        "lon": 35.9993649999999973942976794205605983734130859375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 15, 2026 11:30 UTC 75.0% ▼
  • Duration: 1h 34m
  • Radius: 10 meters
  • Data Points: 14 AIS positions
  • Centroid: 31.7171, 35.9994
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 9.699999999999999289457264239899814128875732421875,
    "duration_minutes": 94.900000000000005684341886080801486968994140625,
    "points": 14,
    "centroid": {
        "lat": 31.71709012142857631033621146343648433685302734375,
        "lon": 35.99936690714286413594891200773417949676513671875
    },
    "bbox": {
        "min_lat": 31.717046700000000925001586438156664371490478515625,
        "min_lon": 35.99934170000000221989466808736324310302734375,
        "max_lat": 31.71716669999999993478922988288104534149169921875,
        "max_lon": 35.9994166999999976042090565897524356842041015625
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 15, 2026 10:05 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 3 hours
  • Data Points: 17 AIS positions
  • Period: 2026-05-15T10:05:16+00:00 to 2026-05-15T13:05:46+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 180.5,
    "points_in_zone": 17,
    "first_point": {
        "ts": "2026-05-15T10:05:16+00:00",
        "lat": 31.71710170000000061918399296700954437255859375,
        "lon": 35.9993750000000005684341886080801486968994140625
    },
    "last_point": {
        "ts": "2026-05-15T13:05:46+00:00",
        "lat": 31.717091700000000997761162579990923404693603515625,
        "lon": 35.9993649999999973942976794205605983734130859375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 15, 2026 10:05 UTC 75.0% ▼
  • Duration: 3 hours
  • Radius: 10 meters
  • Data Points: 17 AIS positions
  • Centroid: 31.7171, 35.9994
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 9.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 180.5,
    "points": 17,
    "centroid": {
        "lat": 31.717091864705881931740805157460272312164306640625,
        "lon": 35.99936667058824468767852522432804107666015625
    },
    "bbox": {
        "min_lat": 31.717046700000000925001586438156664371490478515625,
        "min_lon": 35.99934170000000221989466808736324310302734375,
        "max_lat": 31.71716669999999993478922988288104534149169921875,
        "max_lon": 35.9994166999999976042090565897524356842041015625
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 15, 2026 09:38 UTC 95/100 ▼
Vessel A: IMO 9611541 (THALIA) Liberia
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 0 meters
  • Average Distance: 2 meters
  • Duration: 3h 18m
  • Period: 2026-05-15T09:47:18+00:00 to 2026-05-15T13:05:22+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 2m) for 198 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 2m
Duration25/25Duration 198 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0.200000000000000011102230246251565404236316680908203125,
    "avg_distance_m": 1.600000000000000088817841970012523233890533447265625,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 198.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 11884,
    "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": "2026-05-15T09:47:18+00:00",
        "end": "2026-05-15T13:05:22+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 2m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 198 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 2m) for 198 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 15, 2026 09:11 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 3h 54m
  • Data Points: 21 AIS positions
  • Period: 2026-05-15T09:11:16+00:00 to 2026-05-15T13:05:46+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 234.5,
    "points_in_zone": 21,
    "first_point": {
        "ts": "2026-05-15T09:11:16+00:00",
        "lat": 31.717110000000001690523276920430362224578857421875,
        "lon": 35.99936170000000146274032886140048503875732421875
    },
    "last_point": {
        "ts": "2026-05-15T13:05:46+00:00",
        "lat": 31.717091700000000997761162579990923404693603515625,
        "lon": 35.9993649999999973942976794205605983734130859375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 15, 2026 09:11 UTC 75.0% ▼
  • Duration: 3h 54m
  • Radius: 9 meters
  • Data Points: 21 AIS positions
  • Centroid: 31.7171, 35.9994
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 9.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 234.5,
    "points": 21,
    "centroid": {
        "lat": 31.717095557142858552879260969348251819610595703125,
        "lon": 35.99936341904761860632788739167153835296630859375
    },
    "bbox": {
        "min_lat": 31.717046700000000925001586438156664371490478515625,
        "min_lon": 35.99933999999999656438376405276358127593994140625,
        "max_lat": 31.71716669999999993478922988288104534149169921875,
        "max_lon": 35.9994166999999976042090565897524356842041015625
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
May 15, 2026 08:14 UTC 95/100 ▼
Vessel A: IMO 9611541 (THALIA) Liberia
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 0 meters
  • Average Distance: 2 meters
  • Duration: 4h 51m
  • Period: 2026-05-15T08:14:21+00:00 to 2026-05-15T13:05:22+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 2m) for 291 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 2m
Duration25/25Duration 291 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 Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-05-15T14:45:19.308087+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0.200000000000000011102230246251565404236316680908203125,
    "avg_distance_m": 1.5,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 291,
    "overlap_duration_s": 17461,
    "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": "2026-05-15T08:14:21+00:00",
        "end": "2026-05-15T13:05:22+00:00"
    },
    "points_count": {
        "vessel_a": 18,
        "vessel_b": 18
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 2m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 291 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 Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 2m) for 291 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 Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717092799999999641613612766377627849578857421875,
            "lon": 35.9993635000000011814336176030337810516357421875
        },
        "time_window": {
            "start_ts": "2026-05-15T08:14:21+00:00",
            "end_ts": "2026-05-15T13:05:22+00:00"
        },
        "searched_at": "2026-05-15T14:45:19.308087+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 15, 2026 08:14 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 4h 51m
  • Data Points: 24 AIS positions
  • Period: 2026-05-15T08:14:13+00:00 to 2026-05-15T13:05:46+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 291.6000000000000227373675443232059478759765625,
    "points_in_zone": 24,
    "first_point": {
        "ts": "2026-05-15T08:14:13+00:00",
        "lat": 31.717103300000001553371475893072783946990966796875,
        "lon": 35.99936170000000146274032886140048503875732421875
    },
    "last_point": {
        "ts": "2026-05-15T13:05:46+00:00",
        "lat": 31.717091700000000997761162579990923404693603515625,
        "lon": 35.9993649999999973942976794205605983734130859375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 15, 2026 08:14 UTC 75.0% ▼
  • Duration: 4h 51m
  • Radius: 9 meters
  • Data Points: 24 AIS positions
  • Centroid: 31.7171, 35.9994
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 9.199999999999999289457264239899814128875732421875,
    "duration_minutes": 291.6000000000000227373675443232059478759765625,
    "points": 24,
    "centroid": {
        "lat": 31.717096874999999300825948012061417102813720703125,
        "lon": 35.99936362083334273620494059287011623382568359375
    },
    "bbox": {
        "min_lat": 31.717046700000000925001586438156664371490478515625,
        "min_lon": 35.99933999999999656438376405276358127593994140625,
        "max_lat": 31.71716669999999993478922988288104534149169921875,
        "max_lon": 35.9994166999999976042090565897524356842041015625
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 15, 2026 07:04 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 1m
  • Data Points: 33 AIS positions
  • Period: 2026-05-15T07:04:14+00:00 to 2026-05-15T13:05:46+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 361.5,
    "points_in_zone": 33,
    "first_point": {
        "ts": "2026-05-15T07:04:14+00:00",
        "lat": 31.717098299999999966303221299313008785247802734375,
        "lon": 35.9993649999999973942976794205605983734130859375
    },
    "last_point": {
        "ts": "2026-05-15T13:05:46+00:00",
        "lat": 31.717091700000000997761162579990923404693603515625,
        "lon": 35.9993649999999973942976794205605983734130859375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 15, 2026 07:04 UTC 75.0% ▼
  • Duration: 6h 1m
  • Radius: 9 meters
  • Data Points: 33 AIS positions
  • Centroid: 31.7171, 35.9994
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 9,
    "duration_minutes": 361.5,
    "points": 33,
    "centroid": {
        "lat": 31.71709812727272748134055291302502155303955078125,
        "lon": 35.99936626969696362721151672303676605224609375
    },
    "bbox": {
        "min_lat": 31.717046700000000925001586438156664371490478515625,
        "min_lon": 35.99933999999999656438376405276358127593994140625,
        "max_lat": 31.71716669999999993478922988288104534149169921875,
        "max_lon": 35.9994166999999976042090565897524356842041015625
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 15, 2026 06:23 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 34m
  • Data Points: 38 AIS positions
  • Period: 2026-05-15T06:31:17+00:00 to 2026-05-15T13:05:46+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 394.5,
    "points_in_zone": 38,
    "first_point": {
        "ts": "2026-05-15T06:31:17+00:00",
        "lat": 31.717091700000000997761162579990923404693603515625,
        "lon": 35.999363299999998844214132986962795257568359375
    },
    "last_point": {
        "ts": "2026-05-15T13:05:46+00:00",
        "lat": 31.717091700000000997761162579990923404693603515625,
        "lon": 35.9993649999999973942976794205605983734130859375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 15, 2026 06:23 UTC 75.0% ▼
  • Duration: 6h 34m
  • Radius: 9 meters
  • Data Points: 38 AIS positions
  • Centroid: 31.7171, 35.9994
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 9.0999999999999996447286321199499070644378662109375,
    "duration_minutes": 394.5,
    "points": 38,
    "centroid": {
        "lat": 31.717097365789481244746639276854693889617919921875,
        "lon": 35.9993663210526193552141194231808185577392578125
    },
    "bbox": {
        "min_lat": 31.717046700000000925001586438156664371490478515625,
        "min_lon": 35.99933999999999656438376405276358127593994140625,
        "max_lat": 31.71716669999999993478922988288104534149169921875,
        "max_lon": 35.9994166999999976042090565897524356842041015625
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
May 14, 2026 20:49 UTC 62/100 ▼
Vessel A: IMO 9436666 (HISTRIA PRINCE) MARSHALL ISLANDS
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 1 meters
  • Average Distance: 53 meters
  • Duration: 37 minutes
  • Period: 2026-05-14T20:49:42+00:00 to 2026-05-14T21:26:44+00:00
  • Vessel A Avg Speed: 0.3 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 62/100

Moderate-confidence STS candidate. Two tankers (HISTRIA PRINCE and TRANS SEA) maintained close proximity (min 1m, avg 53m) for 37 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 1m, avg 53m
Duration5/25Duration 37 minutes
Speed Stability14/20both nearly stationary; somewhat variable speeds
Distance Consistency8/15Distance variance ±69m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-05-14T21:45:09.354098+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538003431,
        "imo": 9436666,
        "name": "HISTRIA PRINCE",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 1.100000000000000088817841970012523233890533447265625,
    "avg_distance_m": 53.10000000000000142108547152020037174224853515625,
    "distance_consistency_m": 68.7999999999999971578290569595992565155029296875,
    "duration_minutes": 37,
    "overlap_duration_s": 2222,
    "speed_a_avg": 0.299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.59999999999999997779553950749686919152736663818359375,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.070000000000000006661338147750939242541790008544921875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.299999999999999988897769753748434595763683319091796875,
            "max_sog": 1.399999999999999911182158029987476766109466552734375
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-05-14T20:49:42+00:00",
        "end": "2026-05-14T21:26:44+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 62,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 1m, avg 53m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 37 minutes"
            },
            "speed_stability": {
                "score": 14,
                "max": 20,
                "detail": "both nearly stationary; somewhat variable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b169m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (HISTRIA PRINCE and TRANS SEA) maintained close proximity (min 1m, avg 53m) for 37 minutes. Both vessels were slow-moving (avg speeds 0.3 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717199799999999498822944588027894496917724609375,
            "lon": 35.99958620000000308891685563139617443084716796875
        },
        "time_window": {
            "start_ts": "2026-05-14T20:49:42+00:00",
            "end_ts": "2026-05-14T21:26:44+00:00"
        },
        "searched_at": "2026-05-14T21:45:09.354098+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 14, 2026 12:03 UTC 75/100 ▼
Vessel A: IMO 9956927 (TRANS SEA) Panama
Vessel B: IMO 9611541 (THALIA) Liberia
  • Minimum Distance: 0 meters
  • Average Distance: 2 meters
  • Duration: 30 minutes
  • Period: 2026-05-14T12:05:01+00:00 to 2026-05-14T12:35:01+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (TRANS SEA and THALIA) maintained close proximity (min 0m, avg 2m) 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 2m
Duration5/25Duration 30 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 Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "min_distance_m": 0.200000000000000011102230246251565404236316680908203125,
    "avg_distance_m": 1.600000000000000088817841970012523233890533447265625,
    "distance_consistency_m": 0.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 30,
    "overlap_duration_s": 1800,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-05-14T12:05:01+00:00",
        "end": "2026-05-14T12:35:01+00:00"
    },
    "points_count": {
        "vessel_a": 10,
        "vessel_b": 10
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 2m"
            },
            "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 \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (TRANS SEA and THALIA) maintained close proximity (min 0m, avg 2m) 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 Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
May 14, 2026 08:25 UTC 95/100 ▼
Vessel A: IMO 9956927 (TRANS SEA) Panama
Vessel B: IMO 9611541 (THALIA) Liberia
  • Minimum Distance: 0 meters
  • Average Distance: 2 meters
  • Duration: 4h 9m
  • Period: 2026-05-14T08:25:41+00:00 to 2026-05-14T12:35:01+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (TRANS SEA and THALIA) maintained close proximity (min 0m, avg 2m) for 249 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 2m
Duration25/25Duration 249 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 Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-05-14T14:00:06.774773+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "min_distance_m": 0.200000000000000011102230246251565404236316680908203125,
    "avg_distance_m": 1.8000000000000000444089209850062616169452667236328125,
    "distance_consistency_m": 1,
    "duration_minutes": 249.30000000000001136868377216160297393798828125,
    "overlap_duration_s": 14960,
    "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": "2026-05-14T08:25:41+00:00",
        "end": "2026-05-14T12:35:01+00:00"
    },
    "points_count": {
        "vessel_a": 20,
        "vessel_b": 20
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 2m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 249 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 Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS SEA and THALIA) maintained close proximity (min 0m, avg 2m) for 249 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 Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.71708449999999857027432881295680999755859375,
            "lon": 35.9993630000000024438122636638581752777099609375
        },
        "time_window": {
            "start_ts": "2026-05-14T08:25:41+00:00",
            "end_ts": "2026-05-14T12:35:01+00:00"
        },
        "searched_at": "2026-05-14T14:00:06.774773+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 14, 2026 08:25 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 4h 9m
  • Data Points: 20 AIS positions
  • Period: 2026-05-14T08:25:41+00:00 to 2026-05-14T12:35:01+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 249.30000000000001136868377216160297393798828125,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-05-14T08:25:41+00:00",
        "lat": 31.717105000000000103455022326670587062835693359375,
        "lon": 35.999376699999999118517735041677951812744140625
    },
    "last_point": {
        "ts": "2026-05-14T12:35:01+00:00",
        "lat": 31.7170832999999987578121363185346126556396484375,
        "lon": 35.9993683000000004312823875807225704193115234375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 14, 2026 08:25 UTC 75.0% ▼
  • Duration: 4h 9m
  • Radius: 3 meters
  • Data Points: 20 AIS positions
  • Centroid: 31.7171, 35.9994
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 2.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 249.30000000000001136868377216160297393798828125,
    "points": 20,
    "centroid": {
        "lat": 31.717085245000003368431862327270209789276123046875,
        "lon": 35.9993642550000032542811823077499866485595703125
    },
    "bbox": {
        "min_lat": 31.717060000000000030695446184836328029632568359375,
        "min_lon": 35.99934669999999670153556508012115955352783203125,
        "max_lat": 31.717106699999998653538568760268390178680419921875,
        "max_lon": 35.99938499999999663714334019459784030914306640625
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 14, 2026 07:41 UTC 95/100 ▼
Vessel A: IMO 9956927 (TRANS SEA) Panama
Vessel B: IMO 9611541 (THALIA) Liberia
  • Minimum Distance: 0 meters
  • Average Distance: 2 meters
  • Duration: 4h 53m
  • Period: 2026-05-14T07:41:58+00:00 to 2026-05-14T12:35:01+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (TRANS SEA and THALIA) maintained close proximity (min 0m, avg 2m) for 293 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 2m
Duration25/25Duration 293 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 Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "min_distance_m": 0.200000000000000011102230246251565404236316680908203125,
    "avg_distance_m": 2.29999999999999982236431605997495353221893310546875,
    "distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 293.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 17583,
    "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": "2026-05-14T07:41:58+00:00",
        "end": "2026-05-14T12:35:01+00:00"
    },
    "points_count": {
        "vessel_a": 23,
        "vessel_b": 23
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 2m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 293 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 Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS SEA and THALIA) maintained close proximity (min 0m, avg 2m) for 293 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 Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 14, 2026 07:11 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 5h 24m
  • Data Points: 29 AIS positions
  • Period: 2026-05-14T07:11:02+00:00 to 2026-05-14T12:35:01+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 324,
    "points_in_zone": 29,
    "first_point": {
        "ts": "2026-05-14T07:11:02+00:00",
        "lat": 31.717061699999998580778992618434131145477294921875,
        "lon": 35.999515000000002373781171627342700958251953125
    },
    "last_point": {
        "ts": "2026-05-14T12:35:01+00:00",
        "lat": 31.7170832999999987578121363185346126556396484375,
        "lon": 35.9993683000000004312823875807225704193115234375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 14, 2026 07:11 UTC 75.0% ▼
  • Duration: 5h 24m
  • Radius: 283 meters
  • Data Points: 29 AIS positions
  • Centroid: 31.7170, 35.9996
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 282.80000000000001136868377216160297393798828125,
    "duration_minutes": 324,
    "points": 29,
    "centroid": {
        "lat": 31.717016779310345242492985562421381473541259765625,
        "lon": 35.99955293793103550115120015107095241546630859375
    },
    "bbox": {
        "min_lat": 31.71598829999999935580490273423492908477783203125,
        "min_lon": 35.999331699999999045758158899843692779541015625,
        "max_lat": 31.717106699999998653538568760268390178680419921875,
        "max_lon": 36.0022833000000019865183276124298572540283203125
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
May 14, 2026 03:15 UTC 85/100 ▼
Vessel A: IMO 9376816 (YANBU) Liberia
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 3 meters
  • Average Distance: 58 meters
  • Duration: 4h 35m
  • Period: 2026-05-14T03:15:00+00:00 to 2026-05-14T07:50:01+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (YANBU and TRANS SEA) maintained close proximity (min 3m, avg 58m) for 275 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 3m, avg 58m
Duration25/25Duration 275 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency5/15Distance variance ±108m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-05-14T10:00:11.319740+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636023504,
        "imo": 9376816,
        "name": "YANBU",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 2.79999999999999982236431605997495353221893310546875,
    "avg_distance_m": 58,
    "distance_consistency_m": 107.900000000000005684341886080801486968994140625,
    "duration_minutes": 275,
    "overlap_duration_s": 16501,
    "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": "2026-05-14T03:15:00+00:00",
        "end": "2026-05-14T07:50:01+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 3m, avg 58m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 275 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 5,
                "max": 15,
                "detail": "Distance variance \u00b1108m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (YANBU and TRANS SEA) maintained close proximity (min 3m, avg 58m) for 275 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717016799999999676629158784635365009307861328125,
            "lon": 35.99960750000000331283445120789110660552978515625
        },
        "time_window": {
            "start_ts": "2026-05-14T03:15:00+00:00",
            "end_ts": "2026-05-14T07:50:01+00:00"
        },
        "searched_at": "2026-05-14T10:00:11.319740+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 14, 2026 03:13 UTC 95/100 ▼
Vessel A: IMO 9611541 (THALIA) Liberia
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 1 meters
  • Average Distance: 4 meters
  • Duration: 5h 27m
  • Period: 2026-05-14T03:14:32+00:00 to 2026-05-14T08:41:35+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 4m) for 327 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 4m
Duration25/25Duration 327 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±5m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0.5,
    "avg_distance_m": 4.29999999999999982236431605997495353221893310546875,
    "distance_consistency_m": 4.9000000000000003552713678800500929355621337890625,
    "duration_minutes": 327.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 19623,
    "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": "2026-05-14T03:14:32+00:00",
        "end": "2026-05-14T08:41:35+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 4m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 327 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b15m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 4m) for 327 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 Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 14, 2026 03:06 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 5h 38m
  • Data Points: 20 AIS positions
  • Period: 2026-05-14T03:06:31+00:00 to 2026-05-14T08:45:13+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 338.69999999999998863131622783839702606201171875,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-05-14T03:06:31+00:00",
        "lat": 31.717085000000000860609361552633345127105712890625,
        "lon": 35.99935330000000277550498140044510364532470703125
    },
    "last_point": {
        "ts": "2026-05-14T08:45:13+00:00",
        "lat": 31.717095000000000482032191939651966094970703125,
        "lon": 35.99935669999999987567207426764070987701416015625
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 14, 2026 03:06 UTC 75.0% ▼
  • Duration: 5h 38m
  • Radius: 275 meters
  • Data Points: 20 AIS positions
  • Centroid: 31.7170, 35.9996
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 274.6000000000000227373675443232059478759765625,
    "duration_minutes": 338.69999999999998863131622783839702606201171875,
    "points": 20,
    "centroid": {
        "lat": 31.716992834999995665157257462851703166961669921875,
        "lon": 35.9996355100000045013075578026473522186279296875
    },
    "bbox": {
        "min_lat": 31.71598829999999935580490273423492908477783203125,
        "min_lon": 35.999331699999999045758158899843692779541015625,
        "max_lat": 31.71710829999999958772605168633162975311279296875,
        "max_lon": 36.0022833000000019865183276124298572540283203125
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 13, 2026 16:19 UTC 95/100 ▼
Vessel A: IMO 9956927 (TRANS SEA) Panama
Vessel B: IMO 9611541 (THALIA) Liberia
  • Minimum Distance: 1 meters
  • Average Distance: 3 meters
  • Duration: 3h 51m
  • Period: 2026-05-13T16:19:35+00:00 to 2026-05-13T20:10:46+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (TRANS SEA and THALIA) maintained close proximity (min 1m, avg 2m) for 231 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 1m, avg 2m
Duration25/25Duration 231 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 Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "min_distance_m": 0.6999999999999999555910790149937383830547332763671875,
    "avg_distance_m": 2.5,
    "distance_consistency_m": 1.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 231.19999999999998863131622783839702606201171875,
    "overlap_duration_s": 13871,
    "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": "2026-05-13T16:19:35+00:00",
        "end": "2026-05-13T20:10:46+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 1m, avg 2m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 231 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 Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS SEA and THALIA) maintained close proximity (min 1m, avg 2m) for 231 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 Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 13, 2026 16:19 UTC 95/100 ▼
Vessel A: IMO 9594054 (TRANS TIND) Bahamas
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 1 meters
  • Average Distance: 3 meters
  • Duration: 3h 36m
  • Period: 2026-05-13T16:27:08+00:00 to 2026-05-13T20:03:51+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (TRANS TIND and TRANS SEA) maintained close proximity (min 1m, avg 3m) for 217 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 1m, avg 3m
Duration25/25Duration 217 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 Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 311001289,
        "imo": 9594054,
        "name": "TRANS TIND",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 1.399999999999999911182158029987476766109466552734375,
    "avg_distance_m": 2.899999999999999911182158029987476766109466552734375,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 216.69999999999998863131622783839702606201171875,
    "overlap_duration_s": 13003,
    "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": "2026-05-13T16:27:08+00:00",
        "end": "2026-05-13T20:03:51+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 1m, avg 3m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 217 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 Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS TIND and TRANS SEA) maintained close proximity (min 1m, avg 3m) for 217 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 Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 13, 2026 16:16 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 3h 54m
  • Data Points: 8 AIS positions
  • Period: 2026-05-13T16:16:35+00:00 to 2026-05-13T20:10:46+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 234.19999999999998863131622783839702606201171875,
    "points_in_zone": 8,
    "first_point": {
        "ts": "2026-05-13T16:16:35+00:00",
        "lat": 31.71712670000000144909790833480656147003173828125,
        "lon": 35.99935169999999828860381967388093471527099609375
    },
    "last_point": {
        "ts": "2026-05-13T20:10:46+00:00",
        "lat": 31.7171282999999988305717124603688716888427734375,
        "lon": 35.9993716999999975314494804479181766510009765625
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 13, 2026 09:46 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 6 AIS positions
  • Period: 2026-05-13T09:52:46+00:00 to 2026-05-13T16:28:46+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 396,
    "points_in_zone": 6,
    "first_point": {
        "ts": "2026-05-13T09:52:46+00:00",
        "lat": 31.717111700000000240606823354028165340423583984375,
        "lon": 35.99934669999999670153556508012115955352783203125
    },
    "last_point": {
        "ts": "2026-05-13T16:28:46+00:00",
        "lat": 31.717106699999998653538568760268390178680419921875,
        "lon": 35.99937829999999649999153916724026203155517578125
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 13, 2026 09:02 UTC 95/100 ▼
Vessel A: IMO 9594054 (TRANS TIND) Bahamas
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 1 meters
  • Average Distance: 2 meters
  • Duration: 6h 22m
  • Period: 2026-05-13T09:56:09+00:00 to 2026-05-13T16:18:07+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (TRANS TIND and TRANS SEA) maintained close proximity (min 1m, avg 2m) for 382 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 1m, avg 2m
Duration25/25Duration 382 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 Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 311001289,
        "imo": 9594054,
        "name": "TRANS TIND",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0.8000000000000000444089209850062616169452667236328125,
    "avg_distance_m": 1.6999999999999999555910790149937383830547332763671875,
    "distance_consistency_m": 1.3000000000000000444089209850062616169452667236328125,
    "duration_minutes": 382,
    "overlap_duration_s": 22918,
    "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": "2026-05-13T09:56:09+00:00",
        "end": "2026-05-13T16:18:07+00:00"
    },
    "points_count": {
        "vessel_a": 2,
        "vessel_b": 2
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 1m, avg 2m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 382 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 Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS TIND and TRANS SEA) maintained close proximity (min 1m, avg 2m) for 382 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 Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts🛰️? Eastern Mediterranean Surveillance Zone
May 13, 2026 08:44 UTC 85/100 ▼
Vessel A: IMO 9956927 (TRANS SEA) Panama
Vessel B: IMO 9594054 (TRANS TIND) Bahamas
  • Minimum Distance: 1 meters
  • Average Distance: 3 meters
  • Duration: 1h 5m
  • Period: 2026-05-13T08:44:43+00:00 to 2026-05-13T09:49:46+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (TRANS SEA and TRANS TIND) maintained close proximity (min 1m, avg 3m) for 65 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 1m, avg 3m
Duration15/25Duration 65 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 Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1A_IW_GRDH_1SDV_20260513T033554_20260513T033619_064493_081F74_9FC6_COG • Acquired: 2026-05-13T03:35:54.432196Z • Platform: sentinel-1a
SAR satellite preview for event 538108

Click image to view full size

Searched: 2026-05-13T14:45:06.688858+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 311001289,
        "imo": 9594054,
        "name": "TRANS TIND",
        "flag": "Bahamas"
    },
    "min_distance_m": 0.6999999999999999555910790149937383830547332763671875,
    "avg_distance_m": 2.600000000000000088817841970012523233890533447265625,
    "distance_consistency_m": 1.1999999999999999555910790149937383830547332763671875,
    "duration_minutes": 65,
    "overlap_duration_s": 3903,
    "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": "2026-05-13T08:44:43+00:00",
        "end": "2026-05-13T09:49:46+00:00"
    },
    "points_count": {
        "vessel_a": 11,
        "vessel_b": 11
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 1m, avg 3m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 65 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 Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS SEA and TRANS TIND) maintained close proximity (min 1m, avg 3m) for 65 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 Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 31.717101899999999403689798782579600811004638671875,
            "lon": 35.9993611000000015565092326141893863677978515625
        },
        "time_window": {
            "start_ts": "2026-05-13T08:44:43+00:00",
            "end_ts": "2026-05-13T09:49:46+00:00"
        },
        "searched_at": "2026-05-13T14:45:06.688858+00:00",
        "scene_id": "S1A_IW_GRDH_1SDV_20260513T033554_20260513T033619_064493_081F74_9FC6_COG",
        "scene_datetime": "2026-05-13T03:35:54.432196Z",
        "platform": "sentinel-1a",
        "bbox": {
            "min_lon": 34.53390900000000129921318148262798786163330078125,
            "min_lat": 31.016211999999999449073584401048719882965087890625,
            "max_lon": 37.56298799999999715737430960871279239654541015625,
            "max_lat": 32.93532900000000296358848572708666324615478515625
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/05\/event_538108_thumbnail_20260513144510.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/05\/event_538108_thumbnail_20260513144510.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 13, 2026 08:44 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 1h 11m
  • Data Points: 13 AIS positions
  • Period: 2026-05-13T08:44:43+00:00 to 2026-05-13T09:55:46+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 71,
    "points_in_zone": 13,
    "first_point": {
        "ts": "2026-05-13T08:44:43+00:00",
        "lat": 31.717095000000000482032191939651966094970703125,
        "lon": 35.9993716999999975314494804479181766510009765625
    },
    "last_point": {
        "ts": "2026-05-13T09:55:46+00:00",
        "lat": 31.717110000000001690523276920430362224578857421875,
        "lon": 35.99934999999999973852027324028313159942626953125
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 13, 2026 07:10 UTC 95/100 ▼
Vessel A: IMO 9611541 (THALIA) Liberia
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 0 meters
  • Average Distance: 1 meters
  • Duration: 2h 6m
  • Period: 2026-05-13T07:11:26+00:00 to 2026-05-13T09:17:27+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 1m) 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 Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 1m
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: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0,
    "avg_distance_m": 1.1999999999999999555910790149937383830547332763671875,
    "distance_consistency_m": 1,
    "duration_minutes": 126,
    "overlap_duration_s": 7561,
    "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": "2026-05-13T07:11:26+00:00",
        "end": "2026-05-13T09:17:27+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 1m"
            },
            "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: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 1m) 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 Eastern Mediterranean Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts🛰️? Eastern Mediterranean Surveillance Zone
May 13, 2026 07:10 UTC 95/100 ▼
Vessel A: IMO 9956927 (TRANS SEA) Panama
Vessel B: IMO 9594054 (TRANS TIND) Bahamas
  • Minimum Distance: 0 meters
  • Average Distance: 2 meters
  • Duration: 2h 39m
  • Period: 2026-05-13T07:10:10+00:00 to 2026-05-13T09:49:46+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (TRANS SEA and TRANS TIND) maintained close proximity (min 0m, avg 2m) for 160 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 2m
Duration25/25Duration 160 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 Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1A_IW_GRDH_1SDV_20260513T033554_20260513T033619_064493_081F74_9FC6_COG • Acquired: 2026-05-13T03:35:54.432196Z • Platform: sentinel-1a
SAR satellite preview for event 537831

Click image to view full size

Searched: 2026-05-13T13:30:15.018826+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 311001289,
        "imo": 9594054,
        "name": "TRANS TIND",
        "flag": "Bahamas"
    },
    "min_distance_m": 0.299999999999999988897769753748434595763683319091796875,
    "avg_distance_m": 1.6999999999999999555910790149937383830547332763671875,
    "distance_consistency_m": 1.1999999999999999555910790149937383830547332763671875,
    "duration_minutes": 159.599999999999994315658113919198513031005859375,
    "overlap_duration_s": 9576,
    "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": "2026-05-13T07:10:10+00:00",
        "end": "2026-05-13T09:49:46+00:00"
    },
    "points_count": {
        "vessel_a": 24,
        "vessel_b": 24
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 2m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 160 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 Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS SEA and TRANS TIND) maintained close proximity (min 0m, avg 2m) for 160 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 Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 31.717102199999999356805346906185150146484375,
            "lon": 35.9993697999999966441464493982493877410888671875
        },
        "time_window": {
            "start_ts": "2026-05-13T07:10:10+00:00",
            "end_ts": "2026-05-13T09:49:46+00:00"
        },
        "searched_at": "2026-05-13T13:30:15.018826+00:00",
        "scene_id": "S1A_IW_GRDH_1SDV_20260513T033554_20260513T033619_064493_081F74_9FC6_COG",
        "scene_datetime": "2026-05-13T03:35:54.432196Z",
        "platform": "sentinel-1a",
        "bbox": {
            "min_lon": 34.53390900000000129921318148262798786163330078125,
            "min_lat": 31.016211999999999449073584401048719882965087890625,
            "max_lon": 37.56298799999999715737430960871279239654541015625,
            "max_lat": 32.93532900000000296358848572708666324615478515625
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/05\/event_537831_thumbnail_20260513133018.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/05\/event_537831_thumbnail_20260513133018.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 13, 2026 07:10 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 2h 45m
  • Data Points: 26 AIS positions
  • Period: 2026-05-13T07:10:10+00:00 to 2026-05-13T09:55:46+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 165.599999999999994315658113919198513031005859375,
    "points_in_zone": 26,
    "first_point": {
        "ts": "2026-05-13T07:10:10+00:00",
        "lat": 31.717106699999998653538568760268390178680419921875,
        "lon": 35.999380000000002155502443201839923858642578125
    },
    "last_point": {
        "ts": "2026-05-13T09:55:46+00:00",
        "lat": 31.717110000000001690523276920430362224578857421875,
        "lon": 35.99934999999999973852027324028313159942626953125
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 13, 2026 07:10 UTC 75.0% ▼
  • Duration: 2h 45m
  • Radius: 3 meters
  • Data Points: 26 AIS positions
  • Centroid: 31.7171, 35.9994
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3,
    "duration_minutes": 165.599999999999994315658113919198513031005859375,
    "points": 26,
    "centroid": {
        "lat": 31.71710250000000286263457383029162883758544921875,
        "lon": 35.999369946153848331960034556686878204345703125
    },
    "bbox": {
        "min_lat": 31.717085000000000860609361552633345127105712890625,
        "min_lon": 35.99933999999999656438376405276358127593994140625,
        "max_lat": 31.717124999999999346300683100707828998565673828125,
        "max_lon": 35.99938999999999822421159478835761547088623046875
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 13, 2026 06:11 UTC 95/100 ▼
Vessel A: IMO 9956927 (TRANS SEA) Panama
Vessel B: IMO 9594054 (TRANS TIND) Bahamas
  • Minimum Distance: 0 meters
  • Average Distance: 2 meters
  • Duration: 3h 29m
  • Period: 2026-05-13T06:19:51+00:00 to 2026-05-13T09:49:46+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (TRANS SEA and TRANS TIND) maintained close proximity (min 0m, avg 2m) 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 Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 2m
Duration25/25Duration 210 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 Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 311001289,
        "imo": 9594054,
        "name": "TRANS TIND",
        "flag": "Bahamas"
    },
    "min_distance_m": 0.200000000000000011102230246251565404236316680908203125,
    "avg_distance_m": 1.600000000000000088817841970012523233890533447265625,
    "distance_consistency_m": 1.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 209.900000000000005684341886080801486968994140625,
    "overlap_duration_s": 12595,
    "speed_a_avg": 0,
    "speed_a_std": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-05-13T06:19:51+00:00",
        "end": "2026-05-13T09:49:46+00:00"
    },
    "points_count": {
        "vessel_a": 34,
        "vessel_b": 34
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 2m"
            },
            "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 \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS SEA and TRANS TIND) maintained close proximity (min 0m, avg 2m) 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 Eastern Mediterranean Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 13, 2026 06:07 UTC 95/100 ▼
Vessel A: IMO 9611541 (THALIA) Liberia
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 0 meters
  • Average Distance: 1 meters
  • Duration: 2h 57m
  • Period: 2026-05-13T06:20:29+00:00 to 2026-05-13T09:17:27+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 1m) 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 Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 1m
Duration25/25Duration 177 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 Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0,
    "avg_distance_m": 1.3000000000000000444089209850062616169452667236328125,
    "distance_consistency_m": 1,
    "duration_minutes": 177,
    "overlap_duration_s": 10618,
    "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": "2026-05-13T06:20:29+00:00",
        "end": "2026-05-13T09:17:27+00:00"
    },
    "points_count": {
        "vessel_a": 25,
        "vessel_b": 25
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 1m"
            },
            "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 \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 1m) 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 Eastern Mediterranean Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 13, 2026 06:01 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 3h 54m
  • Data Points: 39 AIS positions
  • Period: 2026-05-13T06:01:45+00:00 to 2026-05-13T09:55:46+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 234,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-05-13T06:01:45+00:00",
        "lat": 31.71711330000000117479430628009140491485595703125,
        "lon": 35.9993683000000004312823875807225704193115234375
    },
    "last_point": {
        "ts": "2026-05-13T09:55:46+00:00",
        "lat": 31.717110000000001690523276920430362224578857421875,
        "lon": 35.99934999999999973852027324028313159942626953125
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 13, 2026 06:01 UTC 75.0% ▼
  • Duration: 3h 54m
  • Radius: 3 meters
  • Data Points: 39 AIS positions
  • Centroid: 31.7171, 35.9994
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 234,
    "points": 39,
    "centroid": {
        "lat": 31.717103251282043885339589905925095081329345703125,
        "lon": 35.99936795384615351167667540721595287322998046875
    },
    "bbox": {
        "min_lat": 31.71708170000000137633833219297230243682861328125,
        "min_lon": 35.99933999999999656438376405276358127593994140625,
        "max_lat": 31.717124999999999346300683100707828998565673828125,
        "max_lon": 35.99938999999999822421159478835761547088623046875
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 13, 2026 05:05 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 4h 50m
  • Data Points: 42 AIS positions
  • Period: 2026-05-13T05:05:20+00:00 to 2026-05-13T09:55:46+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 290.3999999999999772626324556767940521240234375,
    "points_in_zone": 42,
    "first_point": {
        "ts": "2026-05-13T05:05:20+00:00",
        "lat": 31.717099999999998516386767732910811901092529296875,
        "lon": 35.9993683000000004312823875807225704193115234375
    },
    "last_point": {
        "ts": "2026-05-13T09:55:46+00:00",
        "lat": 31.717110000000001690523276920430362224578857421875,
        "lon": 35.99934999999999973852027324028313159942626953125
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 13, 2026 05:05 UTC 75.0% ▼
  • Duration: 4h 50m
  • Radius: 3 meters
  • Data Points: 42 AIS positions
  • Centroid: 31.7171, 35.9994
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 290.3999999999999772626324556767940521240234375,
    "points": 42,
    "centroid": {
        "lat": 31.717102978571428906207074760459363460540771484375,
        "lon": 35.99936805952381035922371665947139263153076171875
    },
    "bbox": {
        "min_lat": 31.71708170000000137633833219297230243682861328125,
        "min_lon": 35.99933999999999656438376405276358127593994140625,
        "max_lat": 31.717124999999999346300683100707828998565673828125,
        "max_lon": 35.99938999999999822421159478835761547088623046875
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Sts🛰️? Eastern Mediterranean Surveillance Zone
May 12, 2026 18:17 UTC 75/100 ▼
Vessel A: IMO 9611541 (THALIA) Liberia
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 0 meters
  • Average Distance: 1 meters
  • Duration: 32 minutes
  • Period: 2026-05-12T18:17:57+00:00 to 2026-05-12T18:50:49+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 1m) for 33 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 1m
Duration5/25Duration 33 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 Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1A_IW_GRDH_1SDV_20260512T153230_20260512T153255_064486_081F2C_27A4_COG • Acquired: 2026-05-12T15:32:30.914880Z • Platform: sentinel-1a
SAR satellite preview for event 534953

Click image to view full size

Searched: 2026-05-13T01:00:01.885171+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0.40000000000000002220446049250313080847263336181640625,
    "avg_distance_m": 1,
    "distance_consistency_m": 0.59999999999999997779553950749686919152736663818359375,
    "duration_minutes": 32.89999999999999857891452847979962825775146484375,
    "overlap_duration_s": 1972,
    "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": "2026-05-12T18:17:57+00:00",
        "end": "2026-05-12T18:50:49+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 1m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 33 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 Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 1m) for 33 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 Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 31.717099999999998516386767732910811901092529296875,
            "lon": 35.99936530000000090012690634466707706451416015625
        },
        "time_window": {
            "start_ts": "2026-05-12T18:17:57+00:00",
            "end_ts": "2026-05-12T18:50:49+00:00"
        },
        "searched_at": "2026-05-13T01:00:01.885171+00:00",
        "scene_id": "S1A_IW_GRDH_1SDV_20260512T153230_20260512T153255_064486_081F2C_27A4_COG",
        "scene_datetime": "2026-05-12T15:32:30.914880Z",
        "platform": "sentinel-1a",
        "bbox": {
            "min_lon": 35.81157300000000276440914603881537914276123046875,
            "min_lat": 30.863130999999999204419509624131023883819580078125,
            "max_lon": 38.8214650000000034424374462105333805084228515625,
            "max_lat": 32.7798810000000031550371204502880573272705078125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/05\/event_534953_thumbnail_20260513010007.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/05\/event_534953_thumbnail_20260513010007.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}
Methodology: 2026.01.18
Sts🛰️? Eastern Mediterranean Surveillance Zone
May 12, 2026 18:14 UTC 75/100 ▼
Vessel A: IMO 9956927 (TRANS SEA) Panama
Vessel B: STRIZH (STRIZH) RUSSIA
  • Minimum Distance: 2 meters
  • Average Distance: 3 meters
  • Duration: 35 minutes
  • Period: 2026-05-12T18:14:44+00:00 to 2026-05-12T18:50:02+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (TRANS SEA and STRIZH) maintained close proximity (min 2m, avg 3m) for 35 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 2m, avg 3m
Duration5/25Duration 35 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 Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1A_IW_GRDH_1SDV_20260512T153230_20260512T153255_064486_081F2C_27A4_COG • Acquired: 2026-05-12T15:32:30.914880Z • Platform: sentinel-1a
SAR satellite preview for event 533839

Click image to view full size

Searched: 2026-05-12T20:15:01.804365+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 273278060,
        "imo": 9832547,
        "name": "STRIZH",
        "flag": "RUSSIA"
    },
    "min_distance_m": 1.8000000000000000444089209850062616169452667236328125,
    "avg_distance_m": 2.79999999999999982236431605997495353221893310546875,
    "distance_consistency_m": 0.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 35.2999999999999971578290569595992565155029296875,
    "overlap_duration_s": 2118,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-05-12T18:14:44+00:00",
        "end": "2026-05-12T18:50:02+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 2m, avg 3m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 35 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 Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (TRANS SEA and STRIZH) maintained close proximity (min 2m, avg 3m) for 35 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 Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 31.71710089999999837573341210372745990753173828125,
            "lon": 35.99937270000000211211954592727124691009521484375
        },
        "time_window": {
            "start_ts": "2026-05-12T18:14:44+00:00",
            "end_ts": "2026-05-12T18:50:02+00:00"
        },
        "searched_at": "2026-05-12T20:15:01.804365+00:00",
        "scene_id": "S1A_IW_GRDH_1SDV_20260512T153230_20260512T153255_064486_081F2C_27A4_COG",
        "scene_datetime": "2026-05-12T15:32:30.914880Z",
        "platform": "sentinel-1a",
        "bbox": {
            "min_lon": 35.81157300000000276440914603881537914276123046875,
            "min_lat": 30.863130999999999204419509624131023883819580078125,
            "max_lon": 38.8214650000000034424374462105333805084228515625,
            "max_lat": 32.7798810000000031550371204502880573272705078125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/05\/event_533839_thumbnail_20260512201506.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/05\/event_533839_thumbnail_20260512201506.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}
Methodology: 2026.01.18
Sts🛰️? Eastern Mediterranean Surveillance Zone
May 12, 2026 18:06 UTC 73/100 ▼
Vessel A: IMO 9594054 (TRANS TIND) Bahamas
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 1 meters
  • Average Distance: 27 meters
  • Duration: 53 minutes
  • Period: 2026-05-12T18:07:43+00:00 to 2026-05-12T19:00:41+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 73/100

Moderate-confidence STS candidate. Two tankers (TRANS TIND and TRANS SEA) maintained close proximity (min 1m, avg 27m) for 53 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 1m, avg 27m
Duration10/25Duration 53 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±96m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1A_IW_GRDH_1SDV_20260512T153230_20260512T153255_064486_081F2C_27A4_COG • Acquired: 2026-05-12T15:32:30.914880Z • Platform: sentinel-1a
SAR satellite preview for event 534805

Click image to view full size

Searched: 2026-05-13T00:45:01.878491+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 311001289,
        "imo": 9594054,
        "name": "TRANS TIND",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0.8000000000000000444089209850062616169452667236328125,
    "avg_distance_m": 26.60000000000000142108547152020037174224853515625,
    "distance_consistency_m": 95.599999999999994315658113919198513031005859375,
    "duration_minutes": 53,
    "overlap_duration_s": 3178,
    "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": "2026-05-12T18:07:43+00:00",
        "end": "2026-05-12T19:00:41+00:00"
    },
    "points_count": {
        "vessel_a": 15,
        "vessel_b": 15
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 73,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 1m, avg 27m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 53 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b196m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (TRANS TIND and TRANS SEA) maintained close proximity (min 1m, avg 27m) for 53 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 31.717255300000001483340383856557309627532958984375,
            "lon": 35.99940339999999849851519684307277202606201171875
        },
        "time_window": {
            "start_ts": "2026-05-12T18:06:29+00:00",
            "end_ts": "2026-05-12T19:00:41+00:00"
        },
        "searched_at": "2026-05-13T00:45:01.878491+00:00",
        "scene_id": "S1A_IW_GRDH_1SDV_20260512T153230_20260512T153255_064486_081F2C_27A4_COG",
        "scene_datetime": "2026-05-12T15:32:30.914880Z",
        "platform": "sentinel-1a",
        "bbox": {
            "min_lon": 35.81157300000000276440914603881537914276123046875,
            "min_lat": 30.863130999999999204419509624131023883819580078125,
            "max_lon": 38.8214650000000034424374462105333805084228515625,
            "max_lat": 32.7798810000000031550371204502880573272705078125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/05\/event_534805_thumbnail_20260513004507.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/05\/event_534805_thumbnail_20260513004507.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 12, 2026 17:55 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 1h 6m
  • Data Points: 12 AIS positions
  • Period: 2026-05-12T17:55:16+00:00 to 2026-05-12T19:02:02+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 66.7999999999999971578290569595992565155029296875,
    "points_in_zone": 12,
    "first_point": {
        "ts": "2026-05-12T17:55:16+00:00",
        "lat": 31.71710170000000061918399296700954437255859375,
        "lon": 35.99933829999999801430021761916577816009521484375
    },
    "last_point": {
        "ts": "2026-05-12T19:02:02+00:00",
        "lat": 31.717110000000001690523276920430362224578857421875,
        "lon": 35.9993683000000004312823875807225704193115234375
    }
}
Methodology: 2026.01.18
Sts🛰️? Eastern Mediterranean Surveillance Zone
May 12, 2026 17:16 UTC 85/100 ▼
Vessel A: IMO 9611541 (THALIA) Liberia
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 0 meters
  • Average Distance: 10 meters
  • Duration: 1h 26m
  • Period: 2026-05-12T17:24:28+00:00 to 2026-05-12T18:50:49+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 10m) for 86 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 10m
Duration15/25Duration 86 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±17m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1A_IW_GRDH_1SDV_20260512T153230_20260512T153255_064486_081F2C_27A4_COG • Acquired: 2026-05-12T15:32:30.914880Z • Platform: sentinel-1a
SAR satellite preview for event 534732

Click image to view full size

Searched: 2026-05-13T00:00:16.173009+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0.40000000000000002220446049250313080847263336181640625,
    "avg_distance_m": 10.4000000000000003552713678800500929355621337890625,
    "distance_consistency_m": 17.39999999999999857891452847979962825775146484375,
    "duration_minutes": 86.2999999999999971578290569595992565155029296875,
    "overlap_duration_s": 5181,
    "speed_a_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_a_std": 0.2300000000000000099920072216264088638126850128173828125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-05-12T17:24:28+00:00",
        "end": "2026-05-12T18:50:49+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 10m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 86 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b117m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 10m) for 86 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 31.71711499999999972487785271368920803070068359375,
            "lon": 35.9993965000000031295712688006460666656494140625
        },
        "time_window": {
            "start_ts": "2026-05-12T17:16:27+00:00",
            "end_ts": "2026-05-12T18:50:49+00:00"
        },
        "searched_at": "2026-05-13T00:00:16.173009+00:00",
        "scene_id": "S1A_IW_GRDH_1SDV_20260512T153230_20260512T153255_064486_081F2C_27A4_COG",
        "scene_datetime": "2026-05-12T15:32:30.914880Z",
        "platform": "sentinel-1a",
        "bbox": {
            "min_lon": 35.81157300000000276440914603881537914276123046875,
            "min_lat": 30.863130999999999204419509624131023883819580078125,
            "max_lon": 38.8214650000000034424374462105333805084228515625,
            "max_lat": 32.7798810000000031550371204502880573272705078125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/05\/event_534732_thumbnail_20260513000019.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/05\/event_534732_thumbnail_20260513000019.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}
Methodology: 2026.01.18
Sts🛰️? Eastern Mediterranean Surveillance Zone
May 12, 2026 17:10 UTC 72/100 ▼
Vessel A: IMO 9637117 (JAG PRANESH) MARSHALL ISLANDS
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 1 meters
  • Average Distance: 3 meters
  • Duration: 35 minutes
  • Period: 2026-05-12T17:10:10+00:00 to 2026-05-12T17:46:05+00:00
  • Vessel A Avg Speed: 0.2 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 72/100

Moderate-confidence STS candidate. Two tankers (JAG PRANESH and TRANS SEA) maintained close proximity (min 1m, avg 3m) for 36 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 1m, avg 3m
Duration5/25Duration 36 minutes
Speed Stability17/20both nearly stationary; stable speeds
Distance Consistency15/15Distance variance ±4m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1A_IW_GRDH_1SDV_20260512T153230_20260512T153255_064486_081F2C_27A4_COG • Acquired: 2026-05-12T15:32:30.914880Z • Platform: sentinel-1a
SAR satellite preview for event 534728

Click image to view full size

Searched: 2026-05-12T23:45:17.018950+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538012314,
        "imo": 9637117,
        "name": "JAG PRANESH",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0.8000000000000000444089209850062616169452667236328125,
    "avg_distance_m": 2.70000000000000017763568394002504646778106689453125,
    "distance_consistency_m": 3.5,
    "duration_minutes": 35.89999999999999857891452847979962825775146484375,
    "overlap_duration_s": 2155,
    "speed_a_avg": 0.2399999999999999911182158029987476766109466552734375,
    "speed_a_std": 0.429999999999999993338661852249060757458209991455078125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.2399999999999999911182158029987476766109466552734375,
            "max_sog": 1.1999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-05-12T17:10:10+00:00",
        "end": "2026-05-12T17:46:05+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 72,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 1m, avg 3m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 36 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; 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: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (JAG PRANESH and TRANS SEA) maintained close proximity (min 1m, avg 3m) for 36 minutes. Both vessels were slow-moving (avg speeds 0.2 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 31.717111100000000334375727106817066669464111328125,
            "lon": 35.9993730999999996811311575584113597869873046875
        },
        "time_window": {
            "start_ts": "2026-05-12T17:10:10+00:00",
            "end_ts": "2026-05-12T17:46:05+00:00"
        },
        "searched_at": "2026-05-12T23:45:17.018950+00:00",
        "scene_id": "S1A_IW_GRDH_1SDV_20260512T153230_20260512T153255_064486_081F2C_27A4_COG",
        "scene_datetime": "2026-05-12T15:32:30.914880Z",
        "platform": "sentinel-1a",
        "bbox": {
            "min_lon": 35.81157300000000276440914603881537914276123046875,
            "min_lat": 30.863130999999999204419509624131023883819580078125,
            "max_lon": 38.8214650000000034424374462105333805084228515625,
            "max_lat": 32.7798810000000031550371204502880573272705078125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/05\/event_534728_thumbnail_20260512234520.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/05\/event_534728_thumbnail_20260512234520.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}
Methodology: 2026.01.18
Sts🛰️? Eastern Mediterranean Surveillance Zone
May 12, 2026 17:09 UTC 83/100 ▼
Vessel A: IMO 9594054 (TRANS TIND) Bahamas
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 0 meters
  • Average Distance: 18 meters
  • Duration: 1h 51m
  • Period: 2026-05-12T17:09:31+00:00 to 2026-05-12T19:00:41+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 83/100

High-confidence STS candidate. Two tankers (TRANS TIND and TRANS SEA) maintained close proximity (min 0m, avg 18m) for 111 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 18m
Duration20/25Duration 111 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±73m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

? SAR Inconclusive

Satellite imagery available but requires review

Preview available for manual review

Scene: S1A_IW_GRDH_1SDV_20260512T153230_20260512T153255_064486_081F2C_27A4_COG • Acquired: 2026-05-12T15:32:30.914880Z • Platform: sentinel-1a
SAR satellite preview for event 534730

Click image to view full size

Searched: 2026-05-13T00:00:07.011117+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 311001289,
        "imo": 9594054,
        "name": "TRANS TIND",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0.40000000000000002220446049250313080847263336181640625,
    "avg_distance_m": 17.5,
    "distance_consistency_m": 72.599999999999994315658113919198513031005859375,
    "duration_minutes": 111.2000000000000028421709430404007434844970703125,
    "overlap_duration_s": 6670,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-05-12T17:09:31+00:00",
        "end": "2026-05-12T19:00:41+00:00"
    },
    "points_count": {
        "vessel_a": 26,
        "vessel_b": 26
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 83,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 18m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 111 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b173m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS TIND and TRANS SEA) maintained close proximity (min 0m, avg 18m) for 111 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "inconclusive",
        "centroid": {
            "lat": 31.7171610999999984414898790419101715087890625,
            "lon": 35.9993807000000032303432817570865154266357421875
        },
        "time_window": {
            "start_ts": "2026-05-12T17:09:31+00:00",
            "end_ts": "2026-05-12T19:00:41+00:00"
        },
        "searched_at": "2026-05-13T00:00:07.011117+00:00",
        "scene_id": "S1A_IW_GRDH_1SDV_20260512T153230_20260512T153255_064486_081F2C_27A4_COG",
        "scene_datetime": "2026-05-12T15:32:30.914880Z",
        "platform": "sentinel-1a",
        "bbox": {
            "min_lon": 35.81157300000000276440914603881537914276123046875,
            "min_lat": 30.863130999999999204419509624131023883819580078125,
            "max_lon": 38.8214650000000034424374462105333805084228515625,
            "max_lat": 32.7798810000000031550371204502880573272705078125
        },
        "assets": {
            "preview_url": "https:\/\/fleetleaks.com\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/05\/event_534730_thumbnail_20260513000010.png",
            "stored_path": "\/home\/fleetleaks\/public_html\/wp-content\/uploads\/fleetleaks-evidence\/sar-imagery\/2026\/05\/event_534730_thumbnail_20260513000010.png",
            "source": "copernicus_dataspace"
        },
        "notes": "Preview available for manual review"
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 12, 2026 16:50 UTC 82/100 ▼
Vessel A: IMO 9956927 (TRANS SEA) Panama
Vessel B: IMO 9243318 (TRITONEA) Panama
  • Minimum Distance: 5 meters
  • Average Distance: 69 meters
  • Duration: 1h 3m
  • Period: 2026-05-12T16:43:27+00:00 to 2026-05-12T17:46:27+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 82/100

High-confidence STS candidate. Two tankers (TRANS SEA and TRITONEA) maintained close proximity (min 5m, avg 69m) for 63 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 5m, avg 69m
Duration15/25Duration 63 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency12/15Distance variance ±46m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 352001697,
        "imo": 9243318,
        "name": "TRITONEA",
        "flag": "Panama"
    },
    "min_distance_m": 5.29999999999999982236431605997495353221893310546875,
    "avg_distance_m": 68.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 46.2000000000000028421709430404007434844970703125,
    "duration_minutes": 63,
    "overlap_duration_s": 3780,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.299999999999999988897769753748434595763683319091796875
        }
    },
    "time_window": {
        "start": "2026-05-12T16:43:27+00:00",
        "end": "2026-05-12T17:46:27+00:00"
    },
    "points_count": {
        "vessel_a": 14,
        "vessel_b": 14
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 82,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 5m, avg 69m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 63 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b146m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS SEA and TRITONEA) maintained close proximity (min 5m, avg 69m) for 63 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 Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 12, 2026 16:04 UTC 95/100 ▼
Vessel A: IMO 9611541 (THALIA) Liberia
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 0 meters
  • Average Distance: 5 meters
  • Duration: 2h 29m
  • Period: 2026-05-12T16:21:25+00:00 to 2026-05-12T18:50:49+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 5m) for 149 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 5m
Duration25/25Duration 149 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±12m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0,
    "avg_distance_m": 4.5999999999999996447286321199499070644378662109375,
    "distance_consistency_m": 11.5,
    "duration_minutes": 149.400000000000005684341886080801486968994140625,
    "overlap_duration_s": 8964,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.1499999999999999944488848768742172978818416595458984375,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-05-12T16:21:25+00:00",
        "end": "2026-05-12T18:50:49+00:00"
    },
    "points_count": {
        "vessel_a": 23,
        "vessel_b": 23
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 5m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 149 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b112m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 5m) for 149 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 Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 12, 2026 16:04 UTC 88/100 ▼
Vessel A: IMO 9594054 (TRANS TIND) Bahamas
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 0 meters
  • Average Distance: 14 meters
  • Duration: 2h 42m
  • Period: 2026-05-12T16:18:23+00:00 to 2026-05-12T19:00:41+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 88/100

High-confidence STS candidate. Two tankers (TRANS TIND and TRANS SEA) maintained close proximity (min 0m, avg 14m) for 162 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 14m
Duration25/25Duration 162 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±60m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 311001289,
        "imo": 9594054,
        "name": "TRANS TIND",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0.200000000000000011102230246251565404236316680908203125,
    "avg_distance_m": 14.300000000000000710542735760100185871124267578125,
    "distance_consistency_m": 60.39999999999999857891452847979962825775146484375,
    "duration_minutes": 162.30000000000001136868377216160297393798828125,
    "overlap_duration_s": 9738,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-05-12T16:18:23+00:00",
        "end": "2026-05-12T19:00:41+00:00"
    },
    "points_count": {
        "vessel_a": 39,
        "vessel_b": 39
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 88,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 14m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 162 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b160m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS TIND and TRANS SEA) maintained close proximity (min 0m, avg 14m) for 162 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 12, 2026 16:02 UTC 90/100 ▼
Vessel A: IMO 9956927 (TRANS SEA) Panama
Vessel B: IMO 9637117 (JAG PRANESH) MARSHALL ISLANDS
  • Minimum Distance: 1 meters
  • Average Distance: 4 meters
  • Duration: 1h 46m
  • Period: 2026-05-12T16:00:14+00:00 to 2026-05-12T17:46:27+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (TRANS SEA and JAG PRANESH) maintained close proximity (min 1m, avg 4m) for 106 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 1m, avg 4m
Duration20/25Duration 106 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 Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 538012314,
        "imo": 9637117,
        "name": "JAG PRANESH",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 0.8000000000000000444089209850062616169452667236328125,
    "avg_distance_m": 3.600000000000000088817841970012523233890533447265625,
    "distance_consistency_m": 2.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 106.2000000000000028421709430404007434844970703125,
    "overlap_duration_s": 6373,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.13000000000000000444089209850062616169452667236328125,
    "speed_b_std": 0.299999999999999988897769753748434595763683319091796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.13000000000000000444089209850062616169452667236328125,
            "max_sog": 1.1999999999999999555910790149937383830547332763671875
        }
    },
    "time_window": {
        "start": "2026-05-12T16:00:14+00:00",
        "end": "2026-05-12T17:46:27+00:00"
    },
    "points_count": {
        "vessel_a": 20,
        "vessel_b": 20
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 1m, avg 4m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 106 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 Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS SEA and JAG PRANESH) maintained close proximity (min 1m, avg 4m) for 106 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 12, 2026 16:00 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 1h 46m
  • Data Points: 20 AIS positions
  • Period: 2026-05-12T16:00:14+00:00 to 2026-05-12T17:46:27+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 106.2000000000000028421709430404007434844970703125,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-05-12T16:00:14+00:00",
        "lat": 31.717106699999998653538568760268390178680419921875,
        "lon": 35.99936670000000304980858345516026020050048828125
    },
    "last_point": {
        "ts": "2026-05-12T17:46:27+00:00",
        "lat": 31.71710170000000061918399296700954437255859375,
        "lon": 35.9993649999999973942976794205605983734130859375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 12, 2026 16:00 UTC 75.0% ▼
  • Duration: 1h 46m
  • Radius: 3 meters
  • Data Points: 20 AIS positions
  • Centroid: 31.7171, 35.9994
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 2.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 106.2000000000000028421709430404007434844970703125,
    "points": 20,
    "centroid": {
        "lat": 31.717107590000001238195181940682232379913330078125,
        "lon": 35.99936616999999472454874194227159023284912109375
    },
    "bbox": {
        "min_lat": 31.71708170000000137633833219297230243682861328125,
        "min_lon": 35.99934830000000118843672680668532848358154296875,
        "max_lat": 31.71712670000000144909790833480656147003173828125,
        "max_lon": 35.99938499999999663714334019459784030914306640625
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 12, 2026 15:53 UTC 95/100 ▼
Vessel A: IMO 9611541 (THALIA) Liberia
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 0 meters
  • Average Distance: 7 meters
  • Duration: 3h 11m
  • Period: 2026-05-12T15:39:27+00:00 to 2026-05-12T18:50:49+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 7m) for 191 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 7m
Duration25/25Duration 191 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±17m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0,
    "avg_distance_m": 6.79999999999999982236431605997495353221893310546875,
    "distance_consistency_m": 17.39999999999999857891452847979962825775146484375,
    "duration_minutes": 191.400000000000005684341886080801486968994140625,
    "overlap_duration_s": 11482,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.13000000000000000444089209850062616169452667236328125,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-05-12T15:39:27+00:00",
        "end": "2026-05-12T18:50:49+00:00"
    },
    "points_count": {
        "vessel_a": 28,
        "vessel_b": 28
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 7m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 191 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b117m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 7m) for 191 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 Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 12, 2026 15:00 UTC 92/100 ▼
Vessel A: IMO 9594054 (TRANS TIND) Bahamas
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 0 meters
  • Average Distance: 10 meters
  • Duration: 3h 51m
  • Period: 2026-05-12T15:08:44+00:00 to 2026-05-12T19:00:41+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 92/100

High-confidence STS candidate. Two tankers (TRANS TIND and TRANS SEA) maintained close proximity (min 0m, avg 10m) for 232 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 10m
Duration25/25Duration 232 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency12/15Distance variance ±49m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 311001289,
        "imo": 9594054,
        "name": "TRANS TIND",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0.200000000000000011102230246251565404236316680908203125,
    "avg_distance_m": 10.0999999999999996447286321199499070644378662109375,
    "distance_consistency_m": 49.2999999999999971578290569595992565155029296875,
    "duration_minutes": 231.900000000000005684341886080801486968994140625,
    "overlap_duration_s": 13917,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-05-12T15:08:44+00:00",
        "end": "2026-05-12T19:00:41+00:00"
    },
    "points_count": {
        "vessel_a": 59,
        "vessel_b": 59
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 92,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 10m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 232 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b149m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS TIND and TRANS SEA) maintained close proximity (min 0m, avg 10m) for 232 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 Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 12, 2026 15:00 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 2h 46m
  • Data Points: 33 AIS positions
  • Period: 2026-05-12T15:00:13+00:00 to 2026-05-12T17:46:27+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 166.19999999999998863131622783839702606201171875,
    "points_in_zone": 33,
    "first_point": {
        "ts": "2026-05-12T15:00:13+00:00",
        "lat": 31.717105000000000103455022326670587062835693359375,
        "lon": 35.9993582999999972571458783932030200958251953125
    },
    "last_point": {
        "ts": "2026-05-12T17:46:27+00:00",
        "lat": 31.71710170000000061918399296700954437255859375,
        "lon": 35.9993649999999973942976794205605983734130859375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 12, 2026 15:00 UTC 75.0% ▼
  • Duration: 2h 46m
  • Radius: 5 meters
  • Data Points: 33 AIS positions
  • Centroid: 31.7171, 35.9994
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 166.19999999999998863131622783839702606201171875,
    "points": 33,
    "centroid": {
        "lat": 31.717104600000002534443410695530474185943603515625,
        "lon": 35.9993670151515203770031803287565708160400390625
    },
    "bbox": {
        "min_lat": 31.717073299999999136389305931515991687774658203125,
        "min_lon": 35.99934830000000118843672680668532848358154296875,
        "max_lat": 31.71712670000000144909790833480656147003173828125,
        "max_lon": 35.9994032999999973299054545350372791290283203125
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 12, 2026 14:27 UTC 92/100 ▼
Vessel A: IMO 9611541 (THALIA) Liberia
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 0 meters
  • Average Distance: 16 meters
  • Duration: 3h 55m
  • Period: 2026-05-12T14:55:27+00:00 to 2026-05-12T18:50:49+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 92/100

High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 16m) for 235 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 16m
Duration25/25Duration 235 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency12/15Distance variance ±34m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0,
    "avg_distance_m": 15.800000000000000710542735760100185871124267578125,
    "distance_consistency_m": 33.7999999999999971578290569595992565155029296875,
    "duration_minutes": 235.400000000000005684341886080801486968994140625,
    "overlap_duration_s": 14122,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.11999999999999999555910790149937383830547332763671875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-05-12T14:55:27+00:00",
        "end": "2026-05-12T18:50:49+00:00"
    },
    "points_count": {
        "vessel_a": 37,
        "vessel_b": 37
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 92,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 16m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 235 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b134m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 16m) for 235 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 Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 12, 2026 14:27 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 3h 19m
  • Data Points: 36 AIS positions
  • Period: 2026-05-12T14:27:15+00:00 to 2026-05-12T17:46:27+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 199.19999999999998863131622783839702606201171875,
    "points_in_zone": 36,
    "first_point": {
        "ts": "2026-05-12T14:27:15+00:00",
        "lat": 31.7171416999999991048753145150840282440185546875,
        "lon": 35.9993750000000005684341886080801486968994140625
    },
    "last_point": {
        "ts": "2026-05-12T17:46:27+00:00",
        "lat": 31.71710170000000061918399296700954437255859375,
        "lon": 35.9993649999999973942976794205605983734130859375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 12, 2026 14:27 UTC 75.0% ▼
  • Duration: 3h 19m
  • Radius: 5 meters
  • Data Points: 36 AIS positions
  • Centroid: 31.7171, 35.9994
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 199.19999999999998863131622783839702606201171875,
    "points": 36,
    "centroid": {
        "lat": 31.717105374999999156671037781052291393280029296875,
        "lon": 35.99936749444444927803488099016249179840087890625
    },
    "bbox": {
        "min_lat": 31.717073299999999136389305931515991687774658203125,
        "min_lon": 35.99934830000000118843672680668532848358154296875,
        "max_lat": 31.7171416999999991048753145150840282440185546875,
        "max_lon": 35.9994032999999973299054545350372791290283203125
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 12, 2026 13:01 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 4h 45m
  • Data Points: 40 AIS positions
  • Period: 2026-05-12T13:01:05+00:00 to 2026-05-12T17:46:27+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 285.3999999999999772626324556767940521240234375,
    "points_in_zone": 40,
    "first_point": {
        "ts": "2026-05-12T13:01:05+00:00",
        "lat": 31.717073299999999136389305931515991687774658203125,
        "lon": 35.9993649999999973942976794205605983734130859375
    },
    "last_point": {
        "ts": "2026-05-12T17:46:27+00:00",
        "lat": 31.71710170000000061918399296700954437255859375,
        "lon": 35.9993649999999973942976794205605983734130859375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 12, 2026 13:01 UTC 75.0% ▼
  • Duration: 4h 45m
  • Radius: 4 meters
  • Data Points: 40 AIS positions
  • Centroid: 31.7171, 35.9994
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 285.3999999999999772626324556767940521240234375,
    "points": 40,
    "centroid": {
        "lat": 31.717102627500015188388715614564716815948486328125,
        "lon": 35.9993676625000063040715758688747882843017578125
    },
    "bbox": {
        "min_lat": 31.717073299999999136389305931515991687774658203125,
        "min_lon": 35.99934830000000118843672680668532848358154296875,
        "max_lat": 31.7171416999999991048753145150840282440185546875,
        "max_lon": 35.9994032999999973299054545350372791290283203125
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 12, 2026 12:06 UTC 92/100 ▼
Vessel A: IMO 9611541 (THALIA) Liberia
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 0 meters
  • Average Distance: 14 meters
  • Duration: 6h 17m
  • Period: 2026-05-12T12:33:08+00:00 to 2026-05-12T18:50:49+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 92/100

High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 14m) for 378 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 14m
Duration25/25Duration 378 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency12/15Distance variance ±31m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0,
    "avg_distance_m": 13.800000000000000710542735760100185871124267578125,
    "distance_consistency_m": 31.300000000000000710542735760100185871124267578125,
    "duration_minutes": 377.69999999999998863131622783839702606201171875,
    "overlap_duration_s": 22661,
    "speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_a_std": 0.11000000000000000055511151231257827021181583404541015625,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-05-12T12:33:08+00:00",
        "end": "2026-05-12T18:50:49+00:00"
    },
    "points_count": {
        "vessel_a": 44,
        "vessel_b": 44
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 92,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 14m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 378 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b131m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 14m) for 378 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 Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 12, 2026 12:04 UTC 92/100 ▼
Vessel A: IMO 9594054 (TRANS TIND) Bahamas
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 0 meters
  • Average Distance: 10 meters
  • Duration: 6h 22m
  • Period: 2026-05-12T12:37:55+00:00 to 2026-05-12T19:00:41+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 92/100

High-confidence STS candidate. Two tankers (TRANS TIND and TRANS SEA) maintained close proximity (min 0m, avg 10m) for 383 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 10m
Duration25/25Duration 383 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency12/15Distance variance ±48m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 311001289,
        "imo": 9594054,
        "name": "TRANS TIND",
        "flag": "Bahamas"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0.200000000000000011102230246251565404236316680908203125,
    "avg_distance_m": 9.9000000000000003552713678800500929355621337890625,
    "distance_consistency_m": 48.5,
    "duration_minutes": 382.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 22966,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_avg": 0,
    "speed_b_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-05-12T12:37:55+00:00",
        "end": "2026-05-12T19:00:41+00:00"
    },
    "points_count": {
        "vessel_a": 61,
        "vessel_b": 61
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 92,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 10m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 383 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b148m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS TIND and TRANS SEA) maintained close proximity (min 0m, avg 10m) for 383 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 Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 12, 2026 12:04 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 5h 42m
  • Data Points: 53 AIS positions
  • Period: 2026-05-12T12:04:05+00:00 to 2026-05-12T17:46:27+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 342.3999999999999772626324556767940521240234375,
    "points_in_zone": 53,
    "first_point": {
        "ts": "2026-05-12T12:04:05+00:00",
        "lat": 31.7170899999999988949639373458921909332275390625,
        "lon": 35.99936000000000291265678242780268192291259765625
    },
    "last_point": {
        "ts": "2026-05-12T17:46:27+00:00",
        "lat": 31.71710170000000061918399296700954437255859375,
        "lon": 35.9993649999999973942976794205605983734130859375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 12, 2026 12:04 UTC 75.0% ▼
  • Duration: 5h 42m
  • Radius: 5 meters
  • Data Points: 53 AIS positions
  • Centroid: 31.7171, 35.9994
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 5,
    "duration_minutes": 342.3999999999999772626324556767940521240234375,
    "points": 53,
    "centroid": {
        "lat": 31.71709704339622248880914412438869476318359375,
        "lon": 35.9993679207547216947205015458166599273681640625
    },
    "bbox": {
        "min_lat": 31.71706329999999951496647554449737071990966796875,
        "min_lon": 35.99934830000000118843672680668532848358154296875,
        "max_lat": 31.7171416999999991048753145150840282440185546875,
        "max_lon": 35.9994032999999973299054545350372791290283203125
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
May 12, 2026 11:55 UTC 75/100 ▼
Vessel A: IMO 9956927 (TRANS SEA) Panama
Vessel B: IMO 9376816 (YANBU) Liberia
  • Minimum Distance: 0 meters
  • Average Distance: 2 meters
  • Duration: 32 minutes
  • Period: 2026-05-12T11:55:09+00:00 to 2026-05-12T12:28:05+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (TRANS SEA and YANBU) maintained close proximity (min 0m, avg 2m) for 33 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 2m
Duration5/25Duration 33 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 Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-05-12T12:45:04.554371+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636023504,
        "imo": 9376816,
        "name": "YANBU",
        "flag": "Liberia"
    },
    "min_distance_m": 0.40000000000000002220446049250313080847263336181640625,
    "avg_distance_m": 1.5,
    "distance_consistency_m": 0.90000000000000002220446049250313080847263336181640625,
    "duration_minutes": 32.89999999999999857891452847979962825775146484375,
    "overlap_duration_s": 1976,
    "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": "2026-05-12T11:55:09+00:00",
        "end": "2026-05-12T12:28:05+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 2m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 33 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 Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (TRANS SEA and YANBU) maintained close proximity (min 0m, avg 2m) for 33 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 Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.71707930000000175141394720412790775299072265625,
            "lon": 35.9993687999999991689037415198981761932373046875
        },
        "time_window": {
            "start_ts": "2026-05-12T11:55:09+00:00",
            "end_ts": "2026-05-12T12:28:05+00:00"
        },
        "searched_at": "2026-05-12T12:45:04.554371+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 12, 2026 11:52 UTC 80/100 ▼
Vessel A: IMO 9956927 (TRANS SEA) Panama
Vessel B: IMO 9594054 (TRANS TIND) Bahamas
  • Minimum Distance: 1 meters
  • Average Distance: 2 meters
  • Duration: 53 minutes
  • Period: 2026-05-12T11:52:09+00:00 to 2026-05-12T12:46:05+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (TRANS SEA and TRANS TIND) maintained close proximity (min 0m, avg 2m) for 54 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 2m
Duration10/25Duration 54 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 Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 311001289,
        "imo": 9594054,
        "name": "TRANS TIND",
        "flag": "Bahamas"
    },
    "min_distance_m": 0.5,
    "avg_distance_m": 2.29999999999999982236431605997495353221893310546875,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 53.89999999999999857891452847979962825775146484375,
    "overlap_duration_s": 3236,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_b_std": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-05-12T11:52:09+00:00",
        "end": "2026-05-12T12:46:05+00:00"
    },
    "points_count": {
        "vessel_a": 14,
        "vessel_b": 14
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 2m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 54 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS SEA and TRANS TIND) maintained close proximity (min 0m, avg 2m) for 54 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 12, 2026 11:49 UTC 85/100 ▼
Vessel A: IMO 9956927 (TRANS SEA) Panama
Vessel B: IMO 9611541 (THALIA) Liberia
  • Minimum Distance: 0 meters
  • Average Distance: 1 meters
  • Duration: 1h 11m
  • Period: 2026-05-12T11:49:09+00:00 to 2026-05-12T13:01:05+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (TRANS SEA and THALIA) maintained close proximity (min 0m, avg 1m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 1m
Duration15/25Duration 72 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 Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "min_distance_m": 0.40000000000000002220446049250313080847263336181640625,
    "avg_distance_m": 1.3000000000000000444089209850062616169452667236328125,
    "distance_consistency_m": 1.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 71.900000000000005684341886080801486968994140625,
    "overlap_duration_s": 4316,
    "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": "2026-05-12T11:49:09+00:00",
        "end": "2026-05-12T13:01:05+00:00"
    },
    "points_count": {
        "vessel_a": 18,
        "vessel_b": 18
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 1m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 72 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS SEA and THALIA) maintained close proximity (min 0m, avg 1m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 12, 2026 11:46 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6 hours
  • Data Points: 59 AIS positions
  • Period: 2026-05-12T11:46:09+00:00 to 2026-05-12T17:46:27+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 360.30000000000001136868377216160297393798828125,
    "points_in_zone": 59,
    "first_point": {
        "ts": "2026-05-12T11:46:09+00:00",
        "lat": 31.717085000000000860609361552633345127105712890625,
        "lon": 35.999376699999999118517735041677951812744140625
    },
    "last_point": {
        "ts": "2026-05-12T17:46:27+00:00",
        "lat": 31.71710170000000061918399296700954437255859375,
        "lon": 35.9993649999999973942976794205605983734130859375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 12, 2026 11:46 UTC 75.0% ▼
  • Duration: 6 hours
  • Radius: 5 meters
  • Data Points: 59 AIS positions
  • Centroid: 31.7171, 35.9994
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 5.0999999999999996447286321199499070644378662109375,
    "duration_minutes": 360.30000000000001136868377216160297393798828125,
    "points": 59,
    "centroid": {
        "lat": 31.71709581864406146678447839803993701934814453125,
        "lon": 35.9993685271186478757954319007694721221923828125
    },
    "bbox": {
        "min_lat": 31.71706329999999951496647554449737071990966796875,
        "min_lon": 35.99934830000000118843672680668532848358154296875,
        "max_lat": 31.7171416999999991048753145150840282440185546875,
        "max_lon": 35.9994032999999973299054545350372791290283203125
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
May 12, 2026 09:11 UTC 92/100 ▼
Vessel A: IMO 9611541 (THALIA) Liberia
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 1 meters
  • Average Distance: 16 meters
  • Duration: 6h 22m
  • Period: 2026-05-12T09:11:19+00:00 to 2026-05-12T15:33:27+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 92/100

High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 16m) for 382 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 16m
Duration25/25Duration 382 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency12/15Distance variance ±36m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-05-12T16:00:07.412020+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0.5,
    "avg_distance_m": 16,
    "distance_consistency_m": 36.2999999999999971578290569595992565155029296875,
    "duration_minutes": 382.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 22928,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_std": 0.059999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-05-12T09:11:19+00:00",
        "end": "2026-05-12T15:33:27+00:00"
    },
    "points_count": {
        "vessel_a": 27,
        "vessel_b": 27
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 92,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 16m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 382 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b136m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 16m) for 382 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 Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717140199999999339297573897056281566619873046875,
            "lon": 35.99938610000000238642314798198640346527099609375
        },
        "time_window": {
            "start_ts": "2026-05-12T09:11:19+00:00",
            "end_ts": "2026-05-12T15:33:27+00:00"
        },
        "searched_at": "2026-05-12T16:00:07.412020+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 12, 2026 09:10 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 37m
  • Data Points: 39 AIS positions
  • Period: 2026-05-12T09:10:15+00:00 to 2026-05-12T15:47:21+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 397.1000000000000227373675443232059478759765625,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-05-12T09:10:15+00:00",
        "lat": 31.717111700000000240606823354028165340423583984375,
        "lon": 35.9993716999999975314494804479181766510009765625
    },
    "last_point": {
        "ts": "2026-05-12T15:47:21+00:00",
        "lat": 31.71712000000000131194610730744898319244384765625,
        "lon": 35.9993582999999972571458783932030200958251953125
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 12, 2026 09:10 UTC 75.0% ▼
  • Duration: 6h 37m
  • Radius: 6 meters
  • Data Points: 39 AIS positions
  • Centroid: 31.7171, 35.9994
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 5.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 397.1000000000000227373675443232059478759765625,
    "points": 39,
    "centroid": {
        "lat": 31.71708978461538919191298191435635089874267578125,
        "lon": 35.99937042051282531929246033541858196258544921875
    },
    "bbox": {
        "min_lat": 31.71706329999999951496647554449737071990966796875,
        "min_lon": 35.99934830000000118843672680668532848358154296875,
        "max_lat": 31.7171416999999991048753145150840282440185546875,
        "max_lon": 35.9994032999999973299054545350372791290283203125
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
May 12, 2026 08:04 UTC 88/100 ▼
Vessel A: IMO 9611541 (THALIA) Liberia
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 1 meters
  • Average Distance: 15 meters
  • Duration: 4h 52m
  • Period: 2026-05-12T08:04:12+00:00 to 2026-05-12T12:57:09+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 88/100

High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 15m) for 293 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 15m
Duration25/25Duration 293 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±60m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-05-12T14:45:11.937881+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0.5,
    "avg_distance_m": 14.800000000000000710542735760100185871124267578125,
    "distance_consistency_m": 59.7000000000000028421709430404007434844970703125,
    "duration_minutes": 292.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 17577,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-05-12T08:04:12+00:00",
        "end": "2026-05-12T12:57:09+00:00"
    },
    "points_count": {
        "vessel_a": 21,
        "vessel_b": 21
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 88,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 15m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 293 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b160m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 15m) for 293 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.71714610000000078571247286163270473480224609375,
            "lon": 35.9993367000000006328264134936034679412841796875
        },
        "time_window": {
            "start_ts": "2026-05-12T08:04:12+00:00",
            "end_ts": "2026-05-12T12:57:09+00:00"
        },
        "searched_at": "2026-05-12T14:45:11.937881+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 12, 2026 08:01 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 33m
  • Data Points: 37 AIS positions
  • Period: 2026-05-12T08:56:00+00:00 to 2026-05-12T15:29:21+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 393.3999999999999772626324556767940521240234375,
    "points_in_zone": 37,
    "first_point": {
        "ts": "2026-05-12T08:56:00+00:00",
        "lat": 31.7170832999999987578121363185346126556396484375,
        "lon": 35.99933999999999656438376405276358127593994140625
    },
    "last_point": {
        "ts": "2026-05-12T15:29:21+00:00",
        "lat": 31.717073299999999136389305931515991687774658203125,
        "lon": 35.99939830000000284826455754227936267852783203125
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 12, 2026 08:01 UTC 75.0% ▼
  • Duration: 6h 33m
  • Radius: 6 meters
  • Data Points: 37 AIS positions
  • Centroid: 31.7171, 35.9994
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 6,
    "duration_minutes": 393.3999999999999772626324556767940521240234375,
    "points": 37,
    "centroid": {
        "lat": 31.71708742972973738005748600699007511138916015625,
        "lon": 35.9993686459459496518320520408451557159423828125
    },
    "bbox": {
        "min_lat": 31.71706329999999951496647554449737071990966796875,
        "min_lon": 35.99933999999999656438376405276358127593994140625,
        "max_lat": 31.7171416999999991048753145150840282440185546875,
        "max_lon": 35.9994032999999973299054545350372791290283203125
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
May 12, 2026 08:00 UTC 95/100 ▼
Vessel A: IMO 9376816 (YANBU) Liberia
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 1 meters
  • Average Distance: 1 meters
  • Duration: 4h 29m
  • Period: 2026-05-12T08:00:22+00:00 to 2026-05-12T12:30:08+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (YANBU and TRANS SEA) maintained close proximity (min 1m, avg 1m) for 270 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 1m, avg 1m
Duration25/25Duration 270 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 Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-05-12T14:45:01.636826+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636023504,
        "imo": 9376816,
        "name": "YANBU",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0.59999999999999997779553950749686919152736663818359375,
    "avg_distance_m": 1.3000000000000000444089209850062616169452667236328125,
    "distance_consistency_m": 0.59999999999999997779553950749686919152736663818359375,
    "duration_minutes": 269.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 16186,
    "speed_a_avg": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_a_std": 0.25,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0899999999999999966693309261245303787291049957275390625,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-05-12T08:00:22+00:00",
        "end": "2026-05-12T12:30:08+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 1m, avg 1m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 270 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 Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (YANBU and TRANS SEA) maintained close proximity (min 1m, avg 1m) for 270 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.71707980000000048903530114330351352691650390625,
            "lon": 35.99936699999999945021045277826488018035888671875
        },
        "time_window": {
            "start_ts": "2026-05-12T08:00:22+00:00",
            "end_ts": "2026-05-12T12:30:08+00:00"
        },
        "searched_at": "2026-05-12T14:45:01.636826+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 12, 2026 07:05 UTC 95/100 ▼
Vessel A: IMO 9376816 (YANBU) Liberia
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 1 meters
  • Average Distance: 1 meters
  • Duration: 5h 17m
  • Period: 2026-05-12T07:13:04+00:00 to 2026-05-12T12:30:08+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (YANBU and TRANS SEA) maintained close proximity (min 1m, avg 1m) for 317 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 1m, avg 1m
Duration25/25Duration 317 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 Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636023504,
        "imo": 9376816,
        "name": "YANBU",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0.59999999999999997779553950749686919152736663818359375,
    "avg_distance_m": 1.3000000000000000444089209850062616169452667236328125,
    "distance_consistency_m": 0.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 317.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 19024,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.1600000000000000033306690738754696212708950042724609375,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.6999999999999999555910790149937383830547332763671875
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-05-12T07:13:04+00:00",
        "end": "2026-05-12T12:30:08+00:00"
    },
    "points_count": {
        "vessel_a": 18,
        "vessel_b": 18
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 1m, avg 1m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 317 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 Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (YANBU and TRANS SEA) maintained close proximity (min 1m, avg 1m) for 317 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 Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 12, 2026 07:05 UTC 88/100 ▼
Vessel A: IMO 9611541 (THALIA) Liberia
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 0 meters
  • Average Distance: 17 meters
  • Duration: 4h 58m
  • Period: 2026-05-12T07:58:42+00:00 to 2026-05-12T12:57:09+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 88/100

High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 17m) for 298 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 17m
Duration25/25Duration 298 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±58m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636015372,
        "imo": 9611541,
        "name": "THALIA",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0.299999999999999988897769753748434595763683319091796875,
    "avg_distance_m": 17.199999999999999289457264239899814128875732421875,
    "distance_consistency_m": 57.5,
    "duration_minutes": 298.3999999999999772626324556767940521240234375,
    "overlap_duration_s": 17907,
    "speed_a_avg": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_a_std": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
            "max_sog": 0.40000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-05-12T07:58:42+00:00",
        "end": "2026-05-12T12:57:09+00:00"
    },
    "points_count": {
        "vessel_a": 23,
        "vessel_b": 23
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 88,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 17m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 298 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b158m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (THALIA and TRANS SEA) maintained close proximity (min 0m, avg 17m) for 298 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 12, 2026 07:03 UTC 68/100 ▼
Vessel A: IMO 9956927 (TRANS SEA) Panama
Vessel B: IMO 9135793 (SEAGAS MAJOR) LIBERIA
  • Minimum Distance: 2 meters
  • Average Distance: 37 meters
  • Duration: 40 minutes
  • Period: 2026-05-12T07:05:46+00:00 to 2026-05-12T07:46:26+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 68/100

Moderate-confidence STS candidate. Two tankers (TRANS SEA and SEAGAS MAJOR) maintained close proximity (min 2m, avg 37m) for 41 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 2m, avg 37m
Duration5/25Duration 41 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency8/15Distance variance ±69m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636016188,
        "imo": 9135793,
        "name": "SEAGAS MAJOR",
        "flag": "LIBERIA"
    },
    "min_distance_m": 2.100000000000000088817841970012523233890533447265625,
    "avg_distance_m": 36.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 68.7999999999999971578290569595992565155029296875,
    "duration_minutes": 40.7000000000000028421709430404007434844970703125,
    "overlap_duration_s": 2440,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.059999999999999997779553950749686919152736663818359375,
    "speed_b_std": 0.0899999999999999966693309261245303787291049957275390625,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.059999999999999997779553950749686919152736663818359375,
            "max_sog": 0.200000000000000011102230246251565404236316680908203125
        }
    },
    "time_window": {
        "start": "2026-05-12T07:05:46+00:00",
        "end": "2026-05-12T07:46:26+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 68,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 2m, avg 37m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 41 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 8,
                "max": 15,
                "detail": "Distance variance \u00b169m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (TRANS SEA and SEAGAS MAJOR) maintained close proximity (min 2m, avg 37m) for 41 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). Moderate distance variation observed during the encounter. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 12, 2026 07:02 UTC 80/100 ▼
Vessel A: IMO 9243318 (TRITONEA) Panama
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 0 meters
  • Average Distance: 2 meters
  • Duration: 55 minutes
  • Period: 2026-05-12T07:16:18+00:00 to 2026-05-12T08:11:21+00:00
  • Vessel A Avg Speed: 0.1 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (TRITONEA and TRANS SEA) maintained close proximity (min 0m, avg 2m) for 55 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 2m
Duration10/25Duration 55 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 Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352001697,
        "imo": 9243318,
        "name": "TRITONEA",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0.200000000000000011102230246251565404236316680908203125,
    "avg_distance_m": 1.8000000000000000444089209850062616169452667236328125,
    "distance_consistency_m": 1.1999999999999999555910790149937383830547332763671875,
    "duration_minutes": 55,
    "overlap_duration_s": 3303,
    "speed_a_avg": 0.05000000000000000277555756156289135105907917022705078125,
    "speed_a_std": 0.2200000000000000011102230246251565404236316680908203125,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.05000000000000000277555756156289135105907917022705078125,
            "max_sog": 0.90000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-05-12T07:16:18+00:00",
        "end": "2026-05-12T08:11:21+00:00"
    },
    "points_count": {
        "vessel_a": 17,
        "vessel_b": 17
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 2m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 55 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 Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRITONEA and TRANS SEA) maintained close proximity (min 0m, avg 2m) for 55 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
May 12, 2026 07:00 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 28m
  • Data Points: 32 AIS positions
  • Period: 2026-05-12T07:58:27+00:00 to 2026-05-12T14:27:15+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 388.80000000000001136868377216160297393798828125,
    "points_in_zone": 32,
    "first_point": {
        "ts": "2026-05-12T07:58:27+00:00",
        "lat": 31.717105000000000103455022326670587062835693359375,
        "lon": 35.99937829999999649999153916724026203155517578125
    },
    "last_point": {
        "ts": "2026-05-12T14:27:15+00:00",
        "lat": 31.7171416999999991048753145150840282440185546875,
        "lon": 35.9993750000000005684341886080801486968994140625
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
May 12, 2026 07:00 UTC 75.0% ▼
  • Duration: 6h 28m
  • Radius: 6 meters
  • Data Points: 32 AIS positions
  • Centroid: 31.7171, 35.9994
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 6,
    "duration_minutes": 388.80000000000001136868377216160297393798828125,
    "points": 32,
    "centroid": {
        "lat": 31.71708796562500509708115714602172374725341796875,
        "lon": 35.999369481249999580541043542325496673583984375
    },
    "bbox": {
        "min_lat": 31.71706329999999951496647554449737071990966796875,
        "min_lon": 35.99933999999999656438376405276358127593994140625,
        "max_lat": 31.7171416999999991048753145150840282440185546875,
        "max_lon": 35.999380000000002155502443201839923858642578125
    },
    "zone_id": "discovered_104"
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
May 12, 2026 06:52 UTC 69/100 ▼
Vessel A: IMO 9956927 (TRANS SEA) Panama
Vessel B: IMO 9326885 (ANAYA) PANAMA
  • Minimum Distance: 1 meters
  • Average Distance: 3 meters
  • Duration: 31 minutes
  • Period: 2026-05-12T06:52:37+00:00 to 2026-05-12T07:24:07+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.4 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 69/100

Moderate-confidence STS candidate. Two tankers (TRANS SEA and ANAYA) maintained close proximity (min 1m, avg 3m) for 32 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.4 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 1m, avg 3m
Duration5/25Duration 32 minutes
Speed Stability14/20both nearly stationary; somewhat variable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-05-12T10:30:01.568198+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 352001906,
        "imo": 9326885,
        "name": "ANAYA",
        "flag": "PANAMA"
    },
    "min_distance_m": 1.1999999999999999555910790149937383830547332763671875,
    "avg_distance_m": 3.29999999999999982236431605997495353221893310546875,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 31.5,
    "overlap_duration_s": 1890,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.39000000000000001332267629550187848508358001708984375,
    "speed_b_std": 0.75,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.39000000000000001332267629550187848508358001708984375,
            "max_sog": 1.899999999999999911182158029987476766109466552734375
        }
    },
    "time_window": {
        "start": "2026-05-12T06:52:37+00:00",
        "end": "2026-05-12T07:24:07+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 69,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 1m, avg 3m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 32 minutes"
            },
            "speed_stability": {
                "score": 14,
                "max": 20,
                "detail": "both nearly stationary; somewhat variable 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 Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (TRANS SEA and ANAYA) maintained close proximity (min 1m, avg 3m) for 32 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.4 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 31.717109799999999353303792304359376430511474609375,
            "lon": 35.9993716999999975314494804479181766510009765625
        },
        "time_window": {
            "start_ts": "2026-05-12T06:52:37+00:00",
            "end_ts": "2026-05-12T07:24:07+00:00"
        },
        "searched_at": "2026-05-12T10:30:01.568198+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 12, 2026 06:47 UTC 85/100 ▼
Vessel A: IMO 9243318 (TRITONEA) Panama
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 0 meters
  • Average Distance: 2 meters
  • Duration: 1h 15m
  • Period: 2026-05-12T06:55:59+00:00 to 2026-05-12T08:11:21+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (TRITONEA and TRANS SEA) maintained close proximity (min 0m, avg 2m) 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 Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 2m
Duration15/25Duration 75 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 Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352001697,
        "imo": 9243318,
        "name": "TRITONEA",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0.200000000000000011102230246251565404236316680908203125,
    "avg_distance_m": 1.600000000000000088817841970012523233890533447265625,
    "distance_consistency_m": 1.1999999999999999555910790149937383830547332763671875,
    "duration_minutes": 75.400000000000005684341886080801486968994140625,
    "overlap_duration_s": 4522,
    "speed_a_avg": 0.040000000000000000832667268468867405317723751068115234375,
    "speed_a_std": 0.190000000000000002220446049250313080847263336181640625,
    "speed_b_avg": 0,
    "speed_b_std": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.040000000000000000832667268468867405317723751068115234375,
            "max_sog": 0.90000000000000002220446049250313080847263336181640625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-05-12T06:55:59+00:00",
        "end": "2026-05-12T08:11:21+00:00"
    },
    "points_count": {
        "vessel_a": 22,
        "vessel_b": 22
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 2m"
            },
            "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 \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRITONEA and TRANS SEA) maintained close proximity (min 0m, avg 2m) 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 Eastern Mediterranean Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 12, 2026 06:46 UTC 95/100 ▼
Vessel A: IMO 9376816 (YANBU) Liberia
Vessel B: IMO 9956927 (TRANS SEA) Panama
  • Minimum Distance: 0 meters
  • Average Distance: 1 meters
  • Duration: 5h 39m
  • Period: 2026-05-12T06:46:55+00:00 to 2026-05-12T12:26:27+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 95/100

High-confidence STS candidate. Two tankers (YANBU and TRANS SEA) maintained close proximity (min 0m, avg 1m) for 340 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 0m, avg 1m
Duration25/25Duration 340 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 Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636023504,
        "imo": 9376816,
        "name": "YANBU",
        "flag": "Liberia"
    },
    "vessel_b": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "min_distance_m": 0.40000000000000002220446049250313080847263336181640625,
    "avg_distance_m": 1.100000000000000088817841970012523233890533447265625,
    "distance_consistency_m": 0.59999999999999997779553950749686919152736663818359375,
    "duration_minutes": 339.5,
    "overlap_duration_s": 20372,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_b_std": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        }
    },
    "time_window": {
        "start": "2026-05-12T06:46:55+00:00",
        "end": "2026-05-12T12:26:27+00:00"
    },
    "points_count": {
        "vessel_a": 19,
        "vessel_b": 19
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 0m, avg 1m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 340 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 Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (YANBU and TRANS SEA) maintained close proximity (min 0m, avg 1m) for 340 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 Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 12, 2026 06:32 UTC 77/100 ▼
Vessel A: IMO 9956927 (TRANS SEA) Panama
Vessel B: AETHER (AETHER) MADAGASCAR
  • Minimum Distance: 14 meters
  • Average Distance: 52 meters
  • Duration: 55 minutes
  • Period: 2026-05-12T06:28:57+00:00 to 2026-05-12T07:24:07+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 77/100

Moderate-confidence STS candidate. Two tankers (TRANS SEA and AETHER) maintained close proximity (min 14m, avg 52m) for 55 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 Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 14m, avg 52m
Duration10/25Duration 55 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency12/15Distance variance ±30m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 647553007,
        "imo": 9328170,
        "name": "AETHER",
        "flag": "MADAGASCAR"
    },
    "min_distance_m": 14.300000000000000710542735760100185871124267578125,
    "avg_distance_m": 52.10000000000000142108547152020037174224853515625,
    "distance_consistency_m": 30.5,
    "duration_minutes": 55.2000000000000028421709430404007434844970703125,
    "overlap_duration_s": 3310,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0200000000000000004163336342344337026588618755340576171875,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-05-12T06:28:57+00:00",
        "end": "2026-05-12T07:24:07+00:00"
    },
    "points_count": {
        "vessel_a": 20,
        "vessel_b": 20
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 77,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 14m, avg 52m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 55 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 12,
                "max": 15,
                "detail": "Distance variance \u00b130m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (TRANS SEA and AETHER) maintained close proximity (min 14m, avg 52m) for 55 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 Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
May 12, 2026 06:17 UTC 82/100 ▼
Vessel A: IMO 9956927 (TRANS SEA) Panama
Vessel B: IMO 9340116 (CHEM HELEN) Liberia
  • Minimum Distance: 1 meters
  • Average Distance: 4 meters
  • Duration: 1 hours
  • Period: 2026-05-12T06:17:36+00:00 to 2026-05-12T07:17:57+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.1 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 82/100

High-confidence STS candidate. Two tankers (TRANS SEA and CHEM HELEN) maintained close proximity (min 1m, avg 4m) for 60 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 1m, avg 4m
Duration15/25Duration 60 minutes
Speed Stability17/20both nearly stationary; stable speeds
Distance Consistency15/15Distance variance ±4m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 352003080,
        "imo": 9956927,
        "name": "TRANS SEA",
        "flag": "Panama"
    },
    "vessel_b": {
        "mmsi": 636013337,
        "imo": 9340116,
        "name": "CHEM HELEN",
        "flag": "Liberia"
    },
    "min_distance_m": 0.8000000000000000444089209850062616169452667236328125,
    "avg_distance_m": 4,
    "distance_consistency_m": 3.5,
    "duration_minutes": 60.39999999999999857891452847979962825775146484375,
    "overlap_duration_s": 3621,
    "speed_a_avg": 0.01000000000000000020816681711721685132943093776702880859375,
    "speed_a_std": 0.0299999999999999988897769753748434595763683319091796875,
    "speed_b_avg": 0.08000000000000000166533453693773481063544750213623046875,
    "speed_b_std": 0.309999999999999997779553950749686919152736663818359375,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0.01000000000000000020816681711721685132943093776702880859375,
            "max_sog": 0.1000000000000000055511151231257827021181583404541015625
        },
        "vessel_b": {
            "avg_sog": 0.08000000000000000166533453693773481063544750213623046875,
            "max_sog": 1.5
        }
    },
    "time_window": {
        "start": "2026-05-12T06:17:36+00:00",
        "end": "2026-05-12T07:17:57+00:00"
    },
    "points_count": {
        "vessel_a": 23,
        "vessel_b": 23
    },
    "zone_id": "discovered_104",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 82,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 1m, avg 4m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 60 minutes"
            },
            "speed_stability": {
                "score": 17,
                "max": 20,
                "detail": "both nearly stationary; 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: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (TRANS SEA and CHEM HELEN) maintained close proximity (min 1m, avg 4m) for 60 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18

Recent Position Data

Time (UTC) Lat Lon Speed Course Zone
Jun 4 15:48 36.6299 -8.9946 10.3 kn 281.5° Atlantic Iberian Monitoring Zone
Jun 4 15:43 36.6271 -8.9786 10.3 kn 283.1° Atlantic Iberian Monitoring Zone
Jun 4 15:37 36.6234 -8.9582 10.1 kn 282.3° Atlantic Iberian Monitoring Zone
Jun 4 15:29 36.6187 -8.9323 10.1 kn 282.6° Atlantic Iberian Monitoring Zone
Jun 4 15:27 36.6172 -8.9245 10.1 kn 282.4° Atlantic Iberian Monitoring Zone
Jun 4 15:26 36.6166 -8.9211 10.1 kn 282.7° Atlantic Iberian Monitoring Zone
Jun 4 15:23 36.6149 -8.9120 10.2 kn 283.1° Atlantic Iberian Monitoring Zone
Jun 4 15:22 36.6138 -8.9063 10.1 kn 281.9° Atlantic Iberian Monitoring Zone
Jun 4 15:20 36.6130 -8.9018 10.0 kn 285.3° Atlantic Iberian Monitoring Zone
Jun 4 15:12 36.6069 -8.8739 10.2 kn 284.1° Atlantic Iberian Monitoring Zone
Jun 4 15:11 36.6060 -8.8693 10.1 kn 283.3° Atlantic Iberian Monitoring Zone
Jun 4 15:08 36.6043 -8.8611 10.0 kn 285.0° Atlantic Iberian Monitoring Zone
Jun 4 15:05 36.6023 -8.8515 10.1 kn 284.7° Atlantic Iberian Monitoring Zone
Jun 4 15:02 36.6003 -8.8419 10.2 kn 284.7° Atlantic Iberian Monitoring Zone
Jun 4 15:01 36.5996 -8.8384 10.2 kn 284.3° Atlantic Iberian Monitoring Zone
Jun 4 14:55 36.5956 -8.8166 10.3 kn 279.5° Atlantic Iberian Monitoring Zone
Jun 4 14:43 36.5891 -8.7759 10.3 kn 281.3° Atlantic Iberian Monitoring Zone
Jun 4 14:34 36.5830 -8.7419 10.1 kn 282.7° Atlantic Iberian Monitoring Zone
Jun 4 14:30 36.5803 -8.7283 10.3 kn 283.3° Atlantic Iberian Monitoring Zone
Jun 4 14:28 36.5794 -8.7237 10.2 kn 284.1° Atlantic Iberian Monitoring 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.