STAR C

IMO 9411135

Vessel information

Vessel Name STAR C
IMO Number 9411135
MMSI 636022659
Vessel Type Tanker
Flag 🇱🇷 LIBERIA
Call Sign 5LJV7
Length 184 m
Beam 27 m

Detected Events (100)

Zone Dwell Eastern Mediterranean Surveillance Zone
Jul 28, 2026 08:00 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 1h 13m
  • Data Points: 24 AIS positions
  • Period: 2026-07-28T08:00:26+00:00 to 2026-07-28T09:13:48+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 73.400000000000005684341886080801486968994140625,
    "points_in_zone": 24,
    "first_point": {
        "ts": "2026-07-28T08:00:26+00:00",
        "lat": 34.571944999999999481588019989430904388427734375,
        "lon": 33.7227333000000015772457118146121501922607421875
    },
    "last_point": {
        "ts": "2026-07-28T09:13:48+00:00",
        "lat": 34.49265170000000324534994433633983135223388671875,
        "lon": 34.01686500000000279442247119732201099395751953125
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
Jul 28, 2026 07:01 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 2h 12m
  • Data Points: 37 AIS positions
  • Period: 2026-07-28T07:01:27+00:00 to 2026-07-28T09:13:48+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 132.30000000000001136868377216160297393798828125,
    "points_in_zone": 37,
    "first_point": {
        "ts": "2026-07-28T07:01:27+00:00",
        "lat": 34.63213830000000115205693873576819896697998046875,
        "lon": 33.486193299999996497717802412807941436767578125
    },
    "last_point": {
        "ts": "2026-07-28T09:13:48+00:00",
        "lat": 34.49265170000000324534994433633983135223388671875,
        "lon": 34.01686500000000279442247119732201099395751953125
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
Jul 28, 2026 06:08 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 3h 5m
  • Data Points: 52 AIS positions
  • Period: 2026-07-28T06:08:48+00:00 to 2026-07-28T09:13:48+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 185,
    "points_in_zone": 52,
    "first_point": {
        "ts": "2026-07-28T06:08:48+00:00",
        "lat": 34.69742500000000262616595136933028697967529296875,
        "lon": 33.31177670000000290428943117149174213409423828125
    },
    "last_point": {
        "ts": "2026-07-28T09:13:48+00:00",
        "lat": 34.49265170000000324534994433633983135223388671875,
        "lon": 34.01686500000000279442247119732201099395751953125
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
Jul 28, 2026 05:54 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 3h 19m
  • Data Points: 53 AIS positions
  • Period: 2026-07-28T05:54:50+00:00 to 2026-07-28T09:13:48+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 199,
    "points_in_zone": 53,
    "first_point": {
        "ts": "2026-07-28T05:54:50+00:00",
        "lat": 34.70766330000000010613803169690072536468505859375,
        "lon": 33.32058829999999716164893470704555511474609375
    },
    "last_point": {
        "ts": "2026-07-28T09:13:48+00:00",
        "lat": 34.49265170000000324534994433633983135223388671875,
        "lon": 34.01686500000000279442247119732201099395751953125
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
Jul 28, 2026 03:23 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 5h 50m
  • Data Points: 56 AIS positions
  • Period: 2026-07-28T03:23:49+00:00 to 2026-07-28T09:13:48+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 350,
    "points_in_zone": 56,
    "first_point": {
        "ts": "2026-07-28T03:23:49+00:00",
        "lat": 34.70772000000000190311766345985233783721923828125,
        "lon": 33.32057669999999660603862139396369457244873046875
    },
    "last_point": {
        "ts": "2026-07-28T09:13:48+00:00",
        "lat": 34.49265170000000324534994433633983135223388671875,
        "lon": 34.01686500000000279442247119732201099395751953125
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 28, 2026 02:09 UTC 75/100 ▼
Vessel A: IMO 9411135 (STAR C) LIBERIA
Vessel B: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
  • Minimum Distance: 67 meters
  • Average Distance: 70 meters
  • Duration: 39 minutes
  • Period: 2026-07-28T02:05:53+00:00 to 2026-07-28T02:44:51+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (STAR C and STI MIGHTY) maintained close proximity (min 67m, avg 70m) for 39 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 67m, avg 70m
Duration5/25Duration 39 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": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 67.2000000000000028421709430404007434844970703125,
    "avg_distance_m": 69.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 2.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 39,
    "overlap_duration_s": 2338,
    "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": "2026-07-28T02:05:53+00:00",
        "end": "2026-07-28T02:44:51+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 67m, avg 70m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 39 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": "Moderate-confidence STS candidate. Two tankers (STAR C and STI MIGHTY) maintained close proximity (min 67m, avg 70m) for 39 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
Jul 28, 2026 02:05 UTC 65/100 ▼
Vessel A: IMO 9411135 (STAR C) LIBERIA
Vessel B: IMO 9357561 (HISTRIA AZURE) Marshall Is
  • Minimum Distance: 317 meters
  • Average Distance: 321 meters
  • Duration: 45 minutes
  • Period: 2026-07-28T02:05:53+00:00 to 2026-07-28T02:50:53+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (STAR C and HISTRIA AZURE) maintained close proximity (min 317m, avg 321m) for 45 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 317m, avg 321m
Duration10/25Duration 45 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

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-28T08:00:02.067594+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "min_distance_m": 317.19999999999998863131622783839702606201171875,
    "avg_distance_m": 320.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 2.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 45,
    "overlap_duration_s": 2700,
    "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": "2026-07-28T02:05:53+00:00",
        "end": "2026-07-28T02:50:53+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 321m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 45 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \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": "Moderate-confidence STS candidate. Two tankers (STAR C and HISTRIA AZURE) maintained close proximity (min 317m, avg 321m) for 45 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70891639999999966903487802483141422271728515625,
            "lon": 33.3215081999999966910763760097324848175048828125
        },
        "time_window": {
            "start_ts": "2026-07-28T02:05:53+00:00",
            "end_ts": "2026-07-28T02:50:53+00:00"
        },
        "searched_at": "2026-07-28T08:00:02.067594+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
Jul 28, 2026 02:05 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 31m
  • Data Points: 59 AIS positions
  • Period: 2026-07-28T02:41:55+00:00 to 2026-07-28T09:13:48+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 391.8999999999999772626324556767940521240234375,
    "points_in_zone": 59,
    "first_point": {
        "ts": "2026-07-28T02:41:55+00:00",
        "lat": 34.7076933000000025231202016584575176239013671875,
        "lon": 33.32057499999999805595507496036589145660400390625
    },
    "last_point": {
        "ts": "2026-07-28T09:13:48+00:00",
        "lat": 34.49265170000000324534994433633983135223388671875,
        "lon": 34.01686500000000279442247119732201099395751953125
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jul 28, 2026 01:08 UTC 90/100 ▼
Vessel A: IMO 9411135 (STAR C) LIBERIA
Vessel B: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
  • Minimum Distance: 67 meters
  • Average Distance: 70 meters
  • Duration: 1h 36m
  • Period: 2026-07-28T01:08:51+00:00 to 2026-07-28T02:44:51+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (STAR C and STI MIGHTY) maintained close proximity (min 67m, avg 70m) for 96 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 67m, avg 70m
Duration20/25Duration 96 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

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-28T07:45:34.294321+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 67.2000000000000028421709430404007434844970703125,
    "avg_distance_m": 69.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 1.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 96,
    "overlap_duration_s": 5760,
    "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": "2026-07-28T01:08:51+00:00",
        "end": "2026-07-28T02:44:51+00:00"
    },
    "points_count": {
        "vessel_a": 6,
        "vessel_b": 6
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 67m, avg 70m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 96 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 (STAR C and STI MIGHTY) maintained close proximity (min 67m, avg 70m) for 96 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": 34.70790559999999658202796126715838909149169921875,
            "lon": 33.32028509999999954516169964335858821868896484375
        },
        "time_window": {
            "start_ts": "2026-07-28T01:08:51+00:00",
            "end_ts": "2026-07-28T02:44:51+00:00"
        },
        "searched_at": "2026-07-28T07:45:34.294321+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 28, 2026 01:05 UTC 70/100 ▼
Vessel A: IMO 9357561 (HISTRIA AZURE) Marshall Is
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 317 meters
  • Average Distance: 320 meters
  • Duration: 1h 3m
  • Period: 2026-07-28T01:40:25+00:00 to 2026-07-28T02:43:23+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 317m, avg 320m) 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 Tightness10/25Min distance 317m, avg 320m
Duration15/25Duration 63 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": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 317.19999999999998863131622783839702606201171875,
    "avg_distance_m": 320.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 1.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 63,
    "overlap_duration_s": 3778,
    "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": "2026-07-28T01:40:25+00:00",
        "end": "2026-07-28T02:43:23+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 320m"
            },
            "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": 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": "Moderate-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 317m, avg 320m) 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
Zone Dwell Eastern Mediterranean Surveillance Zone
Jul 28, 2026 01:05 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 42 AIS positions
  • Period: 2026-07-28T01:32:51+00:00 to 2026-07-28T08:09:06+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 396.19999999999998863131622783839702606201171875,
    "points_in_zone": 42,
    "first_point": {
        "ts": "2026-07-28T01:32:51+00:00",
        "lat": 34.70769169999999803621903993189334869384765625,
        "lon": 33.32057329999999950587152852676808834075927734375
    },
    "last_point": {
        "ts": "2026-07-28T08:09:06+00:00",
        "lat": 34.56211330000000003792592906393110752105712890625,
        "lon": 33.757391699999999445935827679932117462158203125
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 28, 2026 01:05 UTC 75.0% ▼
  • Duration: 4h 49m
  • Radius: 4 meters
  • Data Points: 12 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 289,
    "points": 12,
    "centroid": {
        "lat": 34.70770111666666224436994525603950023651123046875,
        "lon": 33.32057262500000405225364374928176403045654296875
    },
    "bbox": {
        "min_lat": 34.70766330000000010613803169690072536468505859375,
        "min_lon": 33.32055170000000288155206362716853618621826171875,
        "max_lat": 34.70772000000000190311766345985233783721923828125,
        "max_lon": 33.32058829999999716164893470704555511474609375
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 28, 2026 00:28 UTC 80/100 ▼
Vessel A: IMO 9357561 (HISTRIA AZURE) Marshall Is
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 317 meters
  • Average Distance: 320 meters
  • Duration: 2h 14m
  • Period: 2026-07-28T00:28:43+00:00 to 2026-07-28T02:43:23+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 317m, avg 320m) for 135 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 Tightness10/25Min distance 317m, avg 320m
Duration25/25Duration 135 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": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 317.19999999999998863131622783839702606201171875,
    "avg_distance_m": 319.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 1.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 134.69999999999998863131622783839702606201171875,
    "overlap_duration_s": 8080,
    "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": "2026-07-28T00:28:43+00:00",
        "end": "2026-07-28T02:43:23+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 320m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 135 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 (HISTRIA AZURE and STAR C) maintained close proximity (min 317m, avg 320m) for 135 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
Jul 28, 2026 00:02 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 27m
  • Data Points: 29 AIS positions
  • Period: 2026-07-28T00:23:56+00:00 to 2026-07-28T06:51:27+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 387.5,
    "points_in_zone": 29,
    "first_point": {
        "ts": "2026-07-28T00:23:56+00:00",
        "lat": 34.70771669999999886613295529969036579132080078125,
        "lon": 33.32056999999999646888682036660611629486083984375
    },
    "last_point": {
        "ts": "2026-07-28T06:51:27+00:00",
        "lat": 34.6431232999999991761796991340816020965576171875,
        "lon": 33.4475733000000019501385395415127277374267578125
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 28, 2026 00:02 UTC 75.0% ▼
  • Duration: 5h 52m
  • Radius: 5 meters
  • Data Points: 17 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 5.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 352,
    "points": 17,
    "centroid": {
        "lat": 34.70770902941177382672321982681751251220703125,
        "lon": 33.320573129411769741636817343533039093017578125
    },
    "bbox": {
        "min_lat": 34.70766330000000010613803169690072536468505859375,
        "min_lon": 33.32055170000000288155206362716853618621826171875,
        "max_lat": 34.70775669999999735182427684776484966278076171875,
        "max_lon": 33.32058829999999716164893470704555511474609375
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 28, 2026 00:00 UTC 95/100 ▼
Vessel A: IMO 9411135 (STAR C) LIBERIA
Vessel B: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
  • Minimum Distance: 66 meters
  • Average Distance: 69 meters
  • Duration: 2h 42m
  • Period: 2026-07-28T00:02:50+00:00 to 2026-07-28T02:44:51+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 (STAR C and STI MIGHTY) maintained close proximity (min 66m, avg 69m) for 162 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 66m, avg 69m
Duration25/25Duration 162 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": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 66.400000000000005684341886080801486968994140625,
    "avg_distance_m": 68.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 162,
    "overlap_duration_s": 9721,
    "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": "2026-07-28T00:02:50+00:00",
        "end": "2026-07-28T02:44:51+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 66m, avg 69m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 162 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \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 (STAR C and STI MIGHTY) maintained close proximity (min 66m, avg 69m) for 162 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 27, 2026 23:14 UTC 95/100 ▼
Vessel A: IMO 9411135 (STAR C) LIBERIA
Vessel B: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
  • Minimum Distance: 66 meters
  • Average Distance: 69 meters
  • Duration: 3h 30m
  • Period: 2026-07-27T23:14:49+00:00 to 2026-07-28T02:44:51+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 (STAR C and STI MIGHTY) maintained close proximity (min 66m, avg 69m) 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 66m, avg 69m
Duration25/25Duration 210 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": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 66.400000000000005684341886080801486968994140625,
    "avg_distance_m": 68.599999999999994315658113919198513031005859375,
    "distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 210,
    "overlap_duration_s": 12602,
    "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": "2026-07-27T23:14:49+00:00",
        "end": "2026-07-28T02:44:51+00:00"
    },
    "points_count": {
        "vessel_a": 14,
        "vessel_b": 14
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 66m, avg 69m"
            },
            "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 \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 (STAR C and STI MIGHTY) maintained close proximity (min 66m, avg 69m) 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
Zone Dwell Eastern Mediterranean Surveillance Zone
Jul 27, 2026 23:08 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 34m
  • Data Points: 18 AIS positions
  • Period: 2026-07-27T23:20:50+00:00 to 2026-07-28T05:54:50+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 394,
    "points_in_zone": 18,
    "first_point": {
        "ts": "2026-07-27T23:20:50+00:00",
        "lat": 34.70772170000000045320120989345014095306396484375,
        "lon": 33.3205717000000021243977244012057781219482421875
    },
    "last_point": {
        "ts": "2026-07-28T05:54:50+00:00",
        "lat": 34.70766330000000010613803169690072536468505859375,
        "lon": 33.32058829999999716164893470704555511474609375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 23:08 UTC 75.0% ▼
  • Duration: 6h 34m
  • Radius: 5 meters
  • Data Points: 18 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 5.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 394,
    "points": 18,
    "centroid": {
        "lat": 34.70770973333333841992498491890728473663330078125,
        "lon": 33.3205730499999930316334939561784267425537109375
    },
    "bbox": {
        "min_lat": 34.70766330000000010613803169690072536468505859375,
        "min_lon": 33.32055170000000288155206362716853618621826171875,
        "max_lat": 34.70775669999999735182427684776484966278076171875,
        "max_lon": 33.32058829999999716164893470704555511474609375
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jul 27, 2026 22:45 UTC 75/100 ▼
Vessel A: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 68 meters
  • Average Distance: 68 meters
  • Duration: 39 minutes
  • Period: 2026-07-27T22:45:29+00:00 to 2026-07-27T23:24:30+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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 68m) for 39 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 68m, avg 68m
Duration5/25Duration 39 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: 2026-07-28T05:15:34.241535+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 67.5,
    "avg_distance_m": 68,
    "distance_consistency_m": 0.90000000000000002220446049250313080847263336181640625,
    "duration_minutes": 39,
    "overlap_duration_s": 2341,
    "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": "2026-07-27T22:45:29+00:00",
        "end": "2026-07-27T23:24:30+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 68m, avg 68m"
            },
            "duration": {
                "score": 5,
                "max": 25,
                "detail": "Duration 39 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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 68m) for 39 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": 34.707914799999997512713889591395854949951171875,
            "lon": 33.32028919999999772016963106580078601837158203125
        },
        "time_window": {
            "start_ts": "2026-07-27T22:45:29+00:00",
            "end_ts": "2026-07-27T23:24:30+00:00"
        },
        "searched_at": "2026-07-28T05:15:34.241535+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jul 27, 2026 22:37 UTC 65/100 ▼
Vessel A: IMO 9357561 (HISTRIA AZURE) Marshall Is
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 317 meters
  • Average Distance: 318 meters
  • Duration: 48 minutes
  • Period: 2026-07-27T22:37:40+00:00 to 2026-07-27T23:25:43+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 317m, avg 318m) for 48 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 317m, avg 318m
Duration10/25Duration 48 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

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-28T05:16:38.734671+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 317.1000000000000227373675443232059478759765625,
    "avg_distance_m": 318.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 1.5,
    "duration_minutes": 48,
    "overlap_duration_s": 2883,
    "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": "2026-07-27T22:37:40+00:00",
        "end": "2026-07-27T23:25:43+00:00"
    },
    "points_count": {
        "vessel_a": 4,
        "vessel_b": 4
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 318m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 48 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \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": "Moderate-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 317m, avg 318m) for 48 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70892599999999816873241798020899295806884765625,
            "lon": 33.32150850000000019690560293383896350860595703125
        },
        "time_window": {
            "start_ts": "2026-07-27T22:37:40+00:00",
            "end_ts": "2026-07-27T23:25:43+00:00"
        },
        "searched_at": "2026-07-28T05:16:38.734671+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
Jul 27, 2026 22:23 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 5h 18m
  • Data Points: 23 AIS positions
  • Period: 2026-07-27T22:23:55+00:00 to 2026-07-28T03:42:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 318.8999999999999772626324556767940521240234375,
    "points_in_zone": 23,
    "first_point": {
        "ts": "2026-07-27T22:23:55+00:00",
        "lat": 34.70772500000000349018591805361211299896240234375,
        "lon": 33.3205600000000004001776687800884246826171875
    },
    "last_point": {
        "ts": "2026-07-28T03:42:49+00:00",
        "lat": 34.70770999999999872898115427233278751373291015625,
        "lon": 33.32057329999999950587152852676808834075927734375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 22:23 UTC 75.0% ▼
  • Duration: 5h 18m
  • Radius: 5 meters
  • Data Points: 23 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 318.8999999999999772626324556767940521240234375,
    "points": 23,
    "centroid": {
        "lat": 34.707715156521743438133853487670421600341796875,
        "lon": 33.32057289565216962046179105527698993682861328125
    },
    "bbox": {
        "min_lat": 34.7076899999999994861354934982955455780029296875,
        "min_lon": 33.32055170000000288155206362716853618621826171875,
        "max_lat": 34.70775669999999735182427684776484966278076171875,
        "max_lon": 33.320598300000000335785443894565105438232421875
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
Jul 27, 2026 21:11 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 29 AIS positions
  • Period: 2026-07-27T21:11:53+00:00 to 2026-07-28T03:42:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 390.8999999999999772626324556767940521240234375,
    "points_in_zone": 29,
    "first_point": {
        "ts": "2026-07-27T21:11:53+00:00",
        "lat": 34.70768170000000196750988834537565708160400390625,
        "lon": 33.32057669999999660603862139396369457244873046875
    },
    "last_point": {
        "ts": "2026-07-28T03:42:49+00:00",
        "lat": 34.70770999999999872898115427233278751373291015625,
        "lon": 33.32057329999999950587152852676808834075927734375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 21:11 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 5 meters
  • Data Points: 29 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 5.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 390.8999999999999772626324556767940521240234375,
    "points": 29,
    "centroid": {
        "lat": 34.70770914827586040019014035351574420928955078125,
        "lon": 33.32057321724136755847212043590843677520751953125
    },
    "bbox": {
        "min_lat": 34.70767330000000328027454088442027568817138671875,
        "min_lon": 33.32055170000000288155206362716853618621826171875,
        "max_lat": 34.70775669999999735182427684776484966278076171875,
        "max_lon": 33.320598300000000335785443894565105438232421875
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jul 27, 2026 21:06 UTC 95/100 ▼
Vessel A: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 68 meters
  • Average Distance: 69 meters
  • Duration: 2h 18m
  • Period: 2026-07-27T21:06:30+00:00 to 2026-07-27T23:24:30+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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 69m) for 138 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 68m, avg 69m
Duration25/25Duration 138 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: 2026-07-28T03:15:02.187537+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 67.5,
    "avg_distance_m": 69.400000000000005684341886080801486968994140625,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 138,
    "overlap_duration_s": 8280,
    "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": "2026-07-27T21:06:30+00:00",
        "end": "2026-07-27T23:24:30+00:00"
    },
    "points_count": {
        "vessel_a": 10,
        "vessel_b": 10
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 68m, avg 69m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 138 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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 69m) for 138 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": 34.70790199999999714464138378389179706573486328125,
            "lon": 33.32028609999999702040440752170979976654052734375
        },
        "time_window": {
            "start_ts": "2026-07-27T21:06:30+00:00",
            "end_ts": "2026-07-27T23:24:30+00:00"
        },
        "searched_at": "2026-07-28T03:15:02.187537+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 27, 2026 20:56 UTC 95/100 ▼
Vessel A: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 68 meters
  • Average Distance: 70 meters
  • Duration: 3h 21m
  • Period: 2026-07-27T20:03:29+00:00 to 2026-07-27T23:24:30+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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 70m) for 201 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 68m, avg 70m
Duration25/25Duration 201 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": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 67.5,
    "avg_distance_m": 70.2000000000000028421709430404007434844970703125,
    "distance_consistency_m": 2.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 201,
    "overlap_duration_s": 12061,
    "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": "2026-07-27T20:03:29+00:00",
        "end": "2026-07-27T23:24:30+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 68m, avg 70m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 201 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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 70m) for 201 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
Jul 27, 2026 20:46 UTC 80/100 ▼
Vessel A: IMO 9357561 (HISTRIA AZURE) Marshall Is
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 317 meters
  • Average Distance: 319 meters
  • Duration: 2h 39m
  • Period: 2026-07-27T20:46:39+00:00 to 2026-07-27T23:25:43+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 317m, avg 319m) for 159 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 317m, avg 319m
Duration25/25Duration 159 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: 2026-07-28T02:45:01.882297+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 317.1000000000000227373675443232059478759765625,
    "avg_distance_m": 319.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 159.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 9544,
    "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": "2026-07-27T20:46:39+00:00",
        "end": "2026-07-27T23:25:43+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 319m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 159 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \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 (HISTRIA AZURE and STAR C) maintained close proximity (min 317m, avg 319m) for 159 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70892769999999671881596441380679607391357421875,
            "lon": 33.321506900000002815431798808276653289794921875
        },
        "time_window": {
            "start_ts": "2026-07-27T20:46:39+00:00",
            "end_ts": "2026-07-27T23:25:43+00:00"
        },
        "searched_at": "2026-07-28T02:45:01.882297+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
Jul 27, 2026 20:02 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 32m
  • Data Points: 30 AIS positions
  • Period: 2026-07-27T20:50:52+00:00 to 2026-07-28T03:23:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 392.8999999999999772626324556767940521240234375,
    "points_in_zone": 30,
    "first_point": {
        "ts": "2026-07-27T20:50:52+00:00",
        "lat": 34.70770830000000017889760783873498439788818359375,
        "lon": 33.32058330000000268000803771428763866424560546875
    },
    "last_point": {
        "ts": "2026-07-28T03:23:49+00:00",
        "lat": 34.70772000000000190311766345985233783721923828125,
        "lon": 33.32057669999999660603862139396369457244873046875
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 20:02 UTC 75.0% ▼
  • Duration: 6h 32m
  • Radius: 5 meters
  • Data Points: 30 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 5.4000000000000003552713678800500929355621337890625,
    "duration_minutes": 392.8999999999999772626324556767940521240234375,
    "points": 30,
    "centroid": {
        "lat": 34.70770823000000149249899550341069698333740234375,
        "lon": 33.32057427666665461174488882534205913543701171875
    },
    "bbox": {
        "min_lat": 34.70767330000000328027454088442027568817138671875,
        "min_lon": 33.32055170000000288155206362716853618621826171875,
        "max_lat": 34.70775669999999735182427684776484966278076171875,
        "max_lon": 33.320598300000000335785443894565105438232421875
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 27, 2026 19:29 UTC 80/100 ▼
Vessel A: IMO 9357561 (HISTRIA AZURE) Marshall Is
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 317 meters
  • Average Distance: 320 meters
  • Duration: 4h 12m
  • Period: 2026-07-27T19:13:42+00:00 to 2026-07-27T23:25:43+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 317m, avg 320m) for 252 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 Tightness10/25Min distance 317m, avg 320m
Duration25/25Duration 252 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": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 317.1000000000000227373675443232059478759765625,
    "avg_distance_m": 319.5,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 252,
    "overlap_duration_s": 15121,
    "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": "2026-07-27T19:13:42+00:00",
        "end": "2026-07-27T23:25:43+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 320m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 252 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 (HISTRIA AZURE and STAR C) maintained close proximity (min 317m, avg 320m) for 252 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
Jul 27, 2026 19:23 UTC 95/100 ▼
Vessel A: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 68 meters
  • Average Distance: 70 meters
  • Duration: 4h 3m
  • Period: 2026-07-27T19:21:27+00:00 to 2026-07-27T23:24:30+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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 70m) for 243 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 68m, avg 70m
Duration25/25Duration 243 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": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 67.5,
    "avg_distance_m": 70.400000000000005684341886080801486968994140625,
    "distance_consistency_m": 2,
    "duration_minutes": 243.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 14583,
    "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": "2026-07-27T19:21:27+00:00",
        "end": "2026-07-27T23:24:30+00:00"
    },
    "points_count": {
        "vessel_a": 16,
        "vessel_b": 16
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 68m, avg 70m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 243 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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 70m) for 243 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
Jul 27, 2026 19:08 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 33m
  • Data Points: 33 AIS positions
  • Period: 2026-07-27T19:44:52+00:00 to 2026-07-28T02:17:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 393.1000000000000227373675443232059478759765625,
    "points_in_zone": 33,
    "first_point": {
        "ts": "2026-07-27T19:44:52+00:00",
        "lat": 34.70772000000000190311766345985233783721923828125,
        "lon": 33.32057329999999950587152852676808834075927734375
    },
    "last_point": {
        "ts": "2026-07-28T02:17:56+00:00",
        "lat": 34.70769169999999803621903993189334869384765625,
        "lon": 33.32055170000000288155206362716853618621826171875
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 19:08 UTC 75.0% ▼
  • Duration: 6h 33m
  • Radius: 6 meters
  • Data Points: 33 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 5.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 393.1000000000000227373675443232059478759765625,
    "points": 33,
    "centroid": {
        "lat": 34.70770667272726228702595108188688755035400390625,
        "lon": 33.32057616060604487984164734371006488800048828125
    },
    "bbox": {
        "min_lat": 34.70767330000000328027454088442027568817138671875,
        "min_lon": 33.32055170000000288155206362716853618621826171875,
        "max_lat": 34.70775669999999735182427684776484966278076171875,
        "max_lon": 33.320598300000000335785443894565105438232421875
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jul 27, 2026 18:42 UTC 95/100 ▼
Vessel A: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 68 meters
  • Average Distance: 70 meters
  • Duration: 4h 42m
  • Period: 2026-07-27T18:42:26+00:00 to 2026-07-27T23:24:30+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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 70m) for 282 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 68m, avg 70m
Duration25/25Duration 282 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

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-28T00:31:38.072831+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 67.5,
    "avg_distance_m": 70.2999999999999971578290569595992565155029296875,
    "distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 282.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 16924,
    "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": "2026-07-27T18:42:26+00:00",
        "end": "2026-07-27T23:24:30+00:00"
    },
    "points_count": {
        "vessel_a": 18,
        "vessel_b": 18
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 68m, avg 70m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 282 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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 70m) for 282 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": 34.70790610000000242507667280733585357666015625,
            "lon": 33.32028439999999847032086108811199665069580078125
        },
        "time_window": {
            "start_ts": "2026-07-27T18:42:26+00:00",
            "end_ts": "2026-07-27T23:24:30+00:00"
        },
        "searched_at": "2026-07-28T00:31:38.072831+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 27, 2026 18:35 UTC 80/100 ▼
Vessel A: IMO 9357561 (HISTRIA AZURE) Marshall Is
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 317 meters
  • Average Distance: 319 meters
  • Duration: 5h 18m
  • Period: 2026-07-27T18:07:40+00:00 to 2026-07-27T23:25:43+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 317m, avg 319m) for 318 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 Tightness10/25Min distance 317m, avg 319m
Duration25/25Duration 318 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": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 317.1000000000000227373675443232059478759765625,
    "avg_distance_m": 319.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 318.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 19083,
    "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": "2026-07-27T18:07:40+00:00",
        "end": "2026-07-27T23:25:43+00:00"
    },
    "points_count": {
        "vessel_a": 16,
        "vessel_b": 16
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 319m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 318 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 (HISTRIA AZURE and STAR C) maintained close proximity (min 317m, avg 319m) for 318 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
Jul 27, 2026 18:02 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 33m
  • Data Points: 36 AIS positions
  • Period: 2026-07-27T18:35:48+00:00 to 2026-07-28T01:08:51+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 393.1000000000000227373675443232059478759765625,
    "points_in_zone": 36,
    "first_point": {
        "ts": "2026-07-27T18:35:48+00:00",
        "lat": 34.70772170000000045320120989345014095306396484375,
        "lon": 33.32059000000000281715983874164521694183349609375
    },
    "last_point": {
        "ts": "2026-07-28T01:08:51+00:00",
        "lat": 34.70771669999999886613295529969036579132080078125,
        "lon": 33.32058330000000268000803771428763866424560546875
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 18:02 UTC 75.0% ▼
  • Duration: 6h 33m
  • Radius: 5 meters
  • Data Points: 36 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 5.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 393.1000000000000227373675443232059478759765625,
    "points": 36,
    "centroid": {
        "lat": 34.707709727777768193845986388623714447021484375,
        "lon": 33.32057763888888501924157026223838329315185546875
    },
    "bbox": {
        "min_lat": 34.70767330000000328027454088442027568817138671875,
        "min_lon": 33.3205600000000004001776687800884246826171875,
        "max_lat": 34.70775669999999735182427684776484966278076171875,
        "max_lon": 33.3206050000000004729372449219226837158203125
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 27, 2026 17:40 UTC 80/100 ▼
Vessel A: IMO 9357561 (HISTRIA AZURE) Marshall Is
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 317 meters
  • Average Distance: 320 meters
  • Duration: 5h 33m
  • Period: 2026-07-27T17:40:42+00:00 to 2026-07-27T23:13:40+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 317m, avg 320m) for 333 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 Tightness10/25Min distance 317m, avg 320m
Duration25/25Duration 333 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": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 317.1000000000000227373675443232059478759765625,
    "avg_distance_m": 319.5,
    "distance_consistency_m": 1.5,
    "duration_minutes": 333,
    "overlap_duration_s": 19978,
    "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": "2026-07-27T17:40:42+00:00",
        "end": "2026-07-27T23:13:40+00:00"
    },
    "points_count": {
        "vessel_a": 16,
        "vessel_b": 16
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 320m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 333 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 (HISTRIA AZURE and STAR C) maintained close proximity (min 317m, avg 320m) for 333 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
Jul 27, 2026 17:15 UTC 95/100 ▼
Vessel A: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 69 meters
  • Average Distance: 71 meters
  • Duration: 5h 30m
  • Period: 2026-07-27T17:15:30+00:00 to 2026-07-27T22:45:29+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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 70m) for 330 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 68m, avg 70m
Duration25/25Duration 330 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: 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: 2026-07-27T23:45:01.618384+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 68.5,
    "avg_distance_m": 70.5,
    "distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 330,
    "overlap_duration_s": 19799,
    "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": "2026-07-27T17:15:30+00:00",
        "end": "2026-07-27T22:45:29+00:00"
    },
    "points_count": {
        "vessel_a": 21,
        "vessel_b": 21
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 68m, avg 70m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 330 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 70m) for 330 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70790910000000195623215404339134693145751953125,
            "lon": 33.3202866999999969266355037689208984375
        },
        "time_window": {
            "start_ts": "2026-07-27T17:15:30+00:00",
            "end_ts": "2026-07-27T22:45:29+00:00"
        },
        "searched_at": "2026-07-27T23:45:01.618384+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
Jul 27, 2026 17:14 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 33m
  • Data Points: 37 AIS positions
  • Period: 2026-07-27T17:44:47+00:00 to 2026-07-28T00:17:55+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 393.1000000000000227373675443232059478759765625,
    "points_in_zone": 37,
    "first_point": {
        "ts": "2026-07-27T17:44:47+00:00",
        "lat": 34.70772000000000190311766345985233783721923828125,
        "lon": 33.32058330000000268000803771428763866424560546875
    },
    "last_point": {
        "ts": "2026-07-28T00:17:55+00:00",
        "lat": 34.70772170000000045320120989345014095306396484375,
        "lon": 33.32057499999999805595507496036589145660400390625
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 17:14 UTC 75.0% ▼
  • Duration: 6h 33m
  • Radius: 5 meters
  • Data Points: 37 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 5.0999999999999996447286321199499070644378662109375,
    "duration_minutes": 393.1000000000000227373675443232059478759765625,
    "points": 37,
    "centroid": {
        "lat": 34.70771112702703220520561444573104381561279296875,
        "lon": 33.32057923243241503996614483185112476348876953125
    },
    "bbox": {
        "min_lat": 34.70767330000000328027454088442027568817138671875,
        "min_lon": 33.3205600000000004001776687800884246826171875,
        "max_lat": 34.70775669999999735182427684776484966278076171875,
        "max_lon": 33.3206050000000004729372449219226837158203125
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 27, 2026 16:50 UTC 70/100 ▼
Vessel A: IMO 9411135 (STAR C) LIBERIA
Vessel B: IMO 9357561 (HISTRIA AZURE) Marshall Is
  • Minimum Distance: 317 meters
  • Average Distance: 320 meters
  • Duration: 1h 18m
  • Period: 2026-07-27T16:50:50+00:00 to 2026-07-27T18:08:50+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (STAR C and HISTRIA AZURE) maintained close proximity (min 316m, avg 320m) 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 Tightness10/25Min distance 316m, avg 320m
Duration15/25Duration 78 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": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "min_distance_m": 316.5,
    "avg_distance_m": 319.80000000000001136868377216160297393798828125,
    "distance_consistency_m": 2,
    "duration_minutes": 78,
    "overlap_duration_s": 4680,
    "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": "2026-07-27T16:50:50+00:00",
        "end": "2026-07-27T18:08:50+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 316m, avg 320m"
            },
            "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 \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": "Moderate-confidence STS candidate. Two tankers (STAR C and HISTRIA AZURE) maintained close proximity (min 316m, avg 320m) 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
Sts Eastern Mediterranean Surveillance Zone
Jul 27, 2026 16:05 UTC 95/100 ▼
Vessel A: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 69 meters
  • Average Distance: 71 meters
  • Duration: 6 hours
  • Period: 2026-07-27T16:45:30+00:00 to 2026-07-27T22:45:29+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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 71m) for 360 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 68m, avg 71m
Duration25/25Duration 360 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": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 68.5,
    "avg_distance_m": 70.599999999999994315658113919198513031005859375,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 360,
    "overlap_duration_s": 21599,
    "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": "2026-07-27T16:45:30+00:00",
        "end": "2026-07-27T22:45:29+00:00"
    },
    "points_count": {
        "vessel_a": 24,
        "vessel_b": 24
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 68m, avg 71m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 360 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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 71m) for 360 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
Jul 27, 2026 16:05 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 39 AIS positions
  • Period: 2026-07-27T16:50:50+00:00 to 2026-07-27T23:20:50+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-07-27T16:50:50+00:00",
        "lat": 34.707684999999997899067238904535770416259765625,
        "lon": 33.32059170000000136724338517524302005767822265625
    },
    "last_point": {
        "ts": "2026-07-27T23:20:50+00:00",
        "lat": 34.70772170000000045320120989345014095306396484375,
        "lon": 33.3205717000000021243977244012057781219482421875
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 16:05 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 5 meters
  • Data Points: 39 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 390,
    "points": 39,
    "centroid": {
        "lat": 34.70770829230769294326819363050162792205810546875,
        "lon": 33.320580087179479278347571380436420440673828125
    },
    "bbox": {
        "min_lat": 34.70767330000000328027454088442027568817138671875,
        "min_lon": 33.3205600000000004001776687800884246826171875,
        "max_lat": 34.707746700000001283115125261247158050537109375,
        "max_lon": 33.3206050000000004729372449219226837158203125
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
Jul 27, 2026 15:15 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 27m
  • Data Points: 40 AIS positions
  • Period: 2026-07-27T15:26:48+00:00 to 2026-07-27T21:53:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 387,
    "points_in_zone": 40,
    "first_point": {
        "ts": "2026-07-27T15:26:48+00:00",
        "lat": 34.70769500000000107320374809205532073974609375,
        "lon": 33.32057499999999805595507496036589145660400390625
    },
    "last_point": {
        "ts": "2026-07-27T21:53:49+00:00",
        "lat": 34.70769500000000107320374809205532073974609375,
        "lon": 33.32058500000000123009158414788544178009033203125
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 15:15 UTC 75.0% ▼
  • Duration: 6h 27m
  • Radius: 5 meters
  • Data Points: 40 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 5,
    "duration_minutes": 387,
    "points": 40,
    "centroid": {
        "lat": 34.7077060024999894949360168538987636566162109375,
        "lon": 33.3205809625000028972863219678401947021484375
    },
    "bbox": {
        "min_lat": 34.70767330000000328027454088442027568817138671875,
        "min_lon": 33.3205600000000004001776687800884246826171875,
        "max_lat": 34.707746700000001283115125261247158050537109375,
        "max_lon": 33.3206050000000004729372449219226837158203125
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jul 27, 2026 15:04 UTC 80/100 ▼
Vessel A: IMO 9357561 (HISTRIA AZURE) Marshall Is
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 318 meters
  • Average Distance: 320 meters
  • Duration: 2h 27m
  • Period: 2026-07-27T15:04:44+00:00 to 2026-07-27T17:31:42+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 318m, avg 320m) for 147 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 Tightness10/25Min distance 318m, avg 320m
Duration25/25Duration 147 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: 2026-07-27T21:15:34.454416+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 318.3999999999999772626324556767940521240234375,
    "avg_distance_m": 320,
    "distance_consistency_m": 1,
    "duration_minutes": 147,
    "overlap_duration_s": 8818,
    "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": "2026-07-27T15:04:44+00:00",
        "end": "2026-07-27T17:31:42+00:00"
    },
    "points_count": {
        "vessel_a": 11,
        "vessel_b": 11
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 318m, avg 320m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 147 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 (HISTRIA AZURE and STAR C) maintained close proximity (min 318m, avg 320m) for 147 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": 34.70892959999999760611899546347558498382568359375,
            "lon": 33.32152210000000280842868960462510585784912109375
        },
        "time_window": {
            "start_ts": "2026-07-27T15:04:44+00:00",
            "end_ts": "2026-07-27T17:31:42+00:00"
        },
        "searched_at": "2026-07-27T21:15:34.454416+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 27, 2026 15:00 UTC 95/100 ▼
Vessel A: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 68 meters
  • Average Distance: 71 meters
  • Duration: 5h 56m
  • Period: 2026-07-27T15:51:33+00:00 to 2026-07-27T21:48:28+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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 70m) for 357 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 68m, avg 70m
Duration25/25Duration 357 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": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 67.599999999999994315658113919198513031005859375,
    "avg_distance_m": 70.5,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 356.8999999999999772626324556767940521240234375,
    "overlap_duration_s": 21415,
    "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": "2026-07-27T15:51:33+00:00",
        "end": "2026-07-27T21:48:28+00:00"
    },
    "points_count": {
        "vessel_a": 28,
        "vessel_b": 28
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 68m, avg 70m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 357 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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 70m) for 357 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
Jul 27, 2026 14:23 UTC 80/100 ▼
Vessel A: IMO 9357561 (HISTRIA AZURE) Marshall Is
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 318 meters
  • Average Distance: 320 meters
  • Duration: 2h 39m
  • Period: 2026-07-27T14:52:40+00:00 to 2026-07-27T17:31:42+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 318m, avg 320m) for 159 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 318m, avg 320m
Duration25/25Duration 159 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": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 318.3999999999999772626324556767940521240234375,
    "avg_distance_m": 320.1000000000000227373675443232059478759765625,
    "distance_consistency_m": 1.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 159,
    "overlap_duration_s": 9542,
    "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": "2026-07-27T14:52:40+00:00",
        "end": "2026-07-27T17:31:42+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 318m, avg 320m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 159 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \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 (HISTRIA AZURE and STAR C) maintained close proximity (min 318m, avg 320m) for 159 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 27, 2026 14:17 UTC 95/100 ▼
Vessel A: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 68 meters
  • Average Distance: 71 meters
  • Duration: 6h 6m
  • Period: 2026-07-27T14:24:30+00:00 to 2026-07-27T20:30:30+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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 71m) for 366 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 68m, avg 71m
Duration25/25Duration 366 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": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 67.599999999999994315658113919198513031005859375,
    "avg_distance_m": 70.900000000000005684341886080801486968994140625,
    "distance_consistency_m": 1.899999999999999911182158029987476766109466552734375,
    "duration_minutes": 366,
    "overlap_duration_s": 21960,
    "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": "2026-07-27T14:24:30+00:00",
        "end": "2026-07-27T20:30:30+00:00"
    },
    "points_count": {
        "vessel_a": 29,
        "vessel_b": 29
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 68m, avg 71m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 366 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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 71m) for 366 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
Jul 27, 2026 14:05 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 33m
  • Data Points: 39 AIS positions
  • Period: 2026-07-27T14:53:52+00:00 to 2026-07-27T21:26:53+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 393,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-07-27T14:53:52+00:00",
        "lat": 34.70772670000000204026946448720991611480712890625,
        "lon": 33.32058330000000268000803771428763866424560546875
    },
    "last_point": {
        "ts": "2026-07-27T21:26:53+00:00",
        "lat": 34.70769169999999803621903993189334869384765625,
        "lon": 33.3205600000000004001776687800884246826171875
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 14:05 UTC 75.0% ▼
  • Duration: 6h 33m
  • Radius: 5 meters
  • Data Points: 39 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 393,
    "points": 39,
    "centroid": {
        "lat": 34.70770872307692656022481969557702541351318359375,
        "lon": 33.320582053846152348342002369463443756103515625
    },
    "bbox": {
        "min_lat": 34.707678299999997761915437877178192138671875,
        "min_lon": 33.3205600000000004001776687800884246826171875,
        "max_lat": 34.707746700000001283115125261247158050537109375,
        "max_lon": 33.32060830000000350992195308208465576171875
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jul 27, 2026 13:10 UTC 70/100 ▼
Vessel A: IMO 9357561 (HISTRIA AZURE) Marshall Is
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 318 meters
  • Average Distance: 319 meters
  • Duration: 1h 21m
  • Period: 2026-07-27T13:10:42+00:00 to 2026-07-27T14:31:39+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 318m, avg 319m) for 81 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 318m, avg 319m
Duration15/25Duration 81 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

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-27T19:00:34.290002+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 317.5,
    "avg_distance_m": 319.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 2.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 81,
    "overlap_duration_s": 4857,
    "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": "2026-07-27T13:10:42+00:00",
        "end": "2026-07-27T14:31:39+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 318m, avg 319m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 81 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \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": "Moderate-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 318m, avg 319m) for 81 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.7089294000000023743268684484064579010009765625,
            "lon": 33.3215229999999991150616551749408245086669921875
        },
        "time_window": {
            "start_ts": "2026-07-27T13:10:42+00:00",
            "end_ts": "2026-07-27T14:31:39+00:00"
        },
        "searched_at": "2026-07-27T19:00:34.290002+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 27, 2026 13:08 UTC 95/100 ▼
Vessel A: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 68 meters
  • Average Distance: 71 meters
  • Duration: 6 hours
  • Period: 2026-07-27T13:51:30+00:00 to 2026-07-27T19:51:29+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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 71m) for 360 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 68m, avg 71m
Duration25/25Duration 360 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": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 67.599999999999994315658113919198513031005859375,
    "avg_distance_m": 70.7000000000000028421709430404007434844970703125,
    "distance_consistency_m": 1.6999999999999999555910790149937383830547332763671875,
    "duration_minutes": 360,
    "overlap_duration_s": 21599,
    "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": "2026-07-27T13:51:30+00:00",
        "end": "2026-07-27T19:51:29+00:00"
    },
    "points_count": {
        "vessel_a": 31,
        "vessel_b": 31
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 68m, avg 71m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 360 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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 71m) for 360 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
Jul 27, 2026 13:02 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 39m
  • Data Points: 39 AIS positions
  • Period: 2026-07-27T13:50:45+00:00 to 2026-07-27T20:29:52+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 399.1000000000000227373675443232059478759765625,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-07-27T13:50:45+00:00",
        "lat": 34.70772500000000349018591805361211299896240234375,
        "lon": 33.32059000000000281715983874164521694183349609375
    },
    "last_point": {
        "ts": "2026-07-27T20:29:52+00:00",
        "lat": 34.707678299999997761915437877178192138671875,
        "lon": 33.32058330000000268000803771428763866424560546875
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 13:02 UTC 75.0% ▼
  • Duration: 6h 39m
  • Radius: 4 meters
  • Data Points: 39 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 4.0999999999999996447286321199499070644378662109375,
    "duration_minutes": 399.1000000000000227373675443232059478759765625,
    "points": 39,
    "centroid": {
        "lat": 34.70771402307692454769494361244142055511474609375,
        "lon": 33.32058453333333858381593017838895320892333984375
    },
    "bbox": {
        "min_lat": 34.707678299999997761915437877178192138671875,
        "min_lon": 33.3205650000000019872459233738481998443603515625,
        "max_lat": 34.707746700000001283115125261247158050537109375,
        "max_lon": 33.32060830000000350992195308208465576171875
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 27, 2026 12:49 UTC 75/100 ▼
Vessel A: IMO 9357561 (HISTRIA AZURE) Marshall Is
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 318 meters
  • Average Distance: 319 meters
  • Duration: 1h 42m
  • Period: 2026-07-27T12:49:40+00:00 to 2026-07-27T14:31:39+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 (HISTRIA AZURE and STAR C) maintained close proximity (min 318m, avg 319m) for 102 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 318m, avg 319m
Duration20/25Duration 102 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": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 317.5,
    "avg_distance_m": 319.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 2.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 102,
    "overlap_duration_s": 6119,
    "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": "2026-07-27T12:49:40+00:00",
        "end": "2026-07-27T14:31:39+00:00"
    },
    "points_count": {
        "vessel_a": 10,
        "vessel_b": 10
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 318m, avg 319m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 102 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \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": "Moderate-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 318m, avg 319m) for 102 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 27, 2026 12:48 UTC 95/100 ▼
Vessel A: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 68 meters
  • Average Distance: 71 meters
  • Duration: 5h 54m
  • Period: 2026-07-27T12:48:28+00:00 to 2026-07-27T18:42:26+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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 71m) for 354 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 68m, avg 71m
Duration25/25Duration 354 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": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 67.599999999999994315658113919198513031005859375,
    "avg_distance_m": 70.599999999999994315658113919198513031005859375,
    "distance_consistency_m": 1.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 354,
    "overlap_duration_s": 21238,
    "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": "2026-07-27T12:48:28+00:00",
        "end": "2026-07-27T18:42:26+00:00"
    },
    "points_count": {
        "vessel_a": 31,
        "vessel_b": 31
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 68m, avg 71m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 354 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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 71m) for 354 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
Jul 27, 2026 12:08 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 43 AIS positions
  • Period: 2026-07-27T12:53:50+00:00 to 2026-07-27T19:29:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 396,
    "points_in_zone": 43,
    "first_point": {
        "ts": "2026-07-27T12:53:50+00:00",
        "lat": 34.7076966999999996232872945256531238555908203125,
        "lon": 33.320598300000000335785443894565105438232421875
    },
    "last_point": {
        "ts": "2026-07-27T19:29:49+00:00",
        "lat": 34.7077067000000027974238037131726741790771484375,
        "lon": 33.3205650000000019872459233738481998443603515625
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 12:08 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 4 meters
  • Data Points: 43 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3.79999999999999982236431605997495353221893310546875,
    "duration_minutes": 396,
    "points": 43,
    "centroid": {
        "lat": 34.707716944186046248432830907404422760009765625,
        "lon": 33.32058484186045888009175541810691356658935546875
    },
    "bbox": {
        "min_lat": 34.707684999999997899067238904535770416259765625,
        "min_lon": 33.3205650000000019872459233738481998443603515625,
        "max_lat": 34.707746700000001283115125261247158050537109375,
        "max_lon": 33.32060830000000350992195308208465576171875
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jul 27, 2026 11:14 UTC 90/100 ▼
Vessel A: IMO 9411135 (STAR C) LIBERIA
Vessel B: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
  • Minimum Distance: 67 meters
  • Average Distance: 69 meters
  • Duration: 1h 42m
  • Period: 2026-07-27T11:14:48+00:00 to 2026-07-27T12:56:51+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (STAR C and STI MIGHTY) maintained close proximity (min 67m, avg 69m) for 102 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 67m, avg 69m
Duration20/25Duration 102 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

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-27T17:45:01.478815+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 66.7999999999999971578290569595992565155029296875,
    "avg_distance_m": 69.2000000000000028421709430404007434844970703125,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 102,
    "overlap_duration_s": 6123,
    "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": "2026-07-27T11:14:48+00:00",
        "end": "2026-07-27T12:56:51+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 67m, avg 69m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 102 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \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 (STAR C and STI MIGHTY) maintained close proximity (min 67m, avg 69m) for 102 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.7079205000000001746229827404022216796875,
            "lon": 33.32029610000000019454091670922935009002685546875
        },
        "time_window": {
            "start_ts": "2026-07-27T11:14:48+00:00",
            "end_ts": "2026-07-27T12:56:51+00:00"
        },
        "searched_at": "2026-07-27T17:45:01.478815+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jul 27, 2026 11:14 UTC 80/100 ▼
Vessel A: IMO 9411135 (STAR C) LIBERIA
Vessel B: IMO 9357561 (HISTRIA AZURE) Marshall Is
  • Minimum Distance: 316 meters
  • Average Distance: 319 meters
  • Duration: 2h 45m
  • Period: 2026-07-27T11:14:48+00:00 to 2026-07-27T13:59:51+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (STAR C and HISTRIA AZURE) maintained close proximity (min 316m, avg 318m) for 165 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 Tightness10/25Min distance 316m, avg 318m
Duration25/25Duration 165 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

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-27T17:45:33.745920+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "min_distance_m": 315.80000000000001136868377216160297393798828125,
    "avg_distance_m": 318.5,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 165.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 9903,
    "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": "2026-07-27T11:14:48+00:00",
        "end": "2026-07-27T13:59:51+00:00"
    },
    "points_count": {
        "vessel_a": 19,
        "vessel_b": 19
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 316m, avg 318m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 165 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 (STAR C and HISTRIA AZURE) maintained close proximity (min 316m, avg 318m) for 165 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": 34.70892889999999653127815690822899341583251953125,
            "lon": 33.32152270000000271465978585183620452880859375
        },
        "time_window": {
            "start_ts": "2026-07-27T11:14:48+00:00",
            "end_ts": "2026-07-27T13:59:51+00:00"
        },
        "searched_at": "2026-07-27T17:45:33.745920+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
Jul 27, 2026 11:02 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 33m
  • Data Points: 39 AIS positions
  • Period: 2026-07-27T11:35:47+00:00 to 2026-07-27T18:08:50+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 393.1000000000000227373675443232059478759765625,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-07-27T11:35:47+00:00",
        "lat": 34.7077316999999965219103614799678325653076171875,
        "lon": 33.32058500000000123009158414788544178009033203125
    },
    "last_point": {
        "ts": "2026-07-27T18:08:50+00:00",
        "lat": 34.7077316999999965219103614799678325653076171875,
        "lon": 33.3205932999999987487171893008053302764892578125
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 11:02 UTC 75.0% ▼
  • Duration: 6h 33m
  • Radius: 4 meters
  • Data Points: 39 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 393.1000000000000227373675443232059478759765625,
    "points": 39,
    "centroid": {
        "lat": 34.7077169282051301024694112129509449005126953125,
        "lon": 33.32058520769229659208576777018606662750244140625
    },
    "bbox": {
        "min_lat": 34.707684999999997899067238904535770416259765625,
        "min_lon": 33.3205717000000021243977244012057781219482421875,
        "max_lat": 34.7077383000000025958797778002917766571044921875,
        "max_lon": 33.32060830000000350992195308208465576171875
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 27, 2026 10:38 UTC 95/100 ▼
Vessel A: IMO 9411135 (STAR C) LIBERIA
Vessel B: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
  • Minimum Distance: 67 meters
  • Average Distance: 69 meters
  • Duration: 2h 18m
  • Period: 2026-07-27T10:38:46+00:00 to 2026-07-27T12:56:51+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 (STAR C and STI MIGHTY) maintained close proximity (min 67m, avg 69m) for 138 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 67m, avg 69m
Duration25/25Duration 138 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": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "min_distance_m": 66.7999999999999971578290569595992565155029296875,
    "avg_distance_m": 69.099999999999994315658113919198513031005859375,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 138.099999999999994315658113919198513031005859375,
    "overlap_duration_s": 8285,
    "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": "2026-07-27T10:38:46+00:00",
        "end": "2026-07-27T12:56:51+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 67m, avg 69m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 138 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 (STAR C and STI MIGHTY) maintained close proximity (min 67m, avg 69m) for 138 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
Jul 27, 2026 10:17 UTC 80/100 ▼
Vessel A: IMO 9411135 (STAR C) LIBERIA
Vessel B: IMO 9357561 (HISTRIA AZURE) Marshall Is
  • Minimum Distance: 316 meters
  • Average Distance: 318 meters
  • Duration: 3h 42m
  • Period: 2026-07-27T10:17:50+00:00 to 2026-07-27T13:59:51+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (STAR C and HISTRIA AZURE) maintained close proximity (min 316m, avg 318m) for 222 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 Tightness10/25Min distance 316m, avg 318m
Duration25/25Duration 222 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": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "vessel_b": {
        "mmsi": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "min_distance_m": 315.80000000000001136868377216160297393798828125,
    "avg_distance_m": 318,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 222,
    "overlap_duration_s": 13321,
    "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": "2026-07-27T10:17:50+00:00",
        "end": "2026-07-27T13:59:51+00:00"
    },
    "points_count": {
        "vessel_a": 27,
        "vessel_b": 27
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 316m, avg 318m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 222 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 (STAR C and HISTRIA AZURE) maintained close proximity (min 316m, avg 318m) for 222 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
Jul 27, 2026 10:14 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 27m
  • Data Points: 41 AIS positions
  • Period: 2026-07-27T10:56:48+00:00 to 2026-07-27T17:23:50+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 387,
    "points_in_zone": 41,
    "first_point": {
        "ts": "2026-07-27T10:56:48+00:00",
        "lat": 34.7077067000000027974238037131726741790771484375,
        "lon": 33.3205549999999988131094141863286495208740234375
    },
    "last_point": {
        "ts": "2026-07-27T17:23:50+00:00",
        "lat": 34.70771169999999727906470070593059062957763671875,
        "lon": 33.32058669999999978017513058148324489593505859375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 10:14 UTC 75.0% ▼
  • Duration: 6h 27m
  • Radius: 4 meters
  • Data Points: 41 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3.5,
    "duration_minutes": 387,
    "points": 41,
    "centroid": {
        "lat": 34.70771529024390389395193778909742832183837890625,
        "lon": 33.320582353658522833939059637486934661865234375
    },
    "bbox": {
        "min_lat": 34.707684999999997899067238904535770416259765625,
        "min_lon": 33.320549999999997226041159592568874359130859375,
        "max_lat": 34.70773669999999810897861607372760772705078125,
        "max_lon": 33.32060830000000350992195308208465576171875
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jul 27, 2026 09:25 UTC 80/100 ▼
Vessel A: IMO 9357561 (HISTRIA AZURE) Marshall Is
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 314 meters
  • Average Distance: 317 meters
  • Duration: 2h 15m
  • Period: 2026-07-27T09:25:42+00:00 to 2026-07-27T11:40:44+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 314m, avg 317m) for 135 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 Tightness10/25Min distance 314m, avg 317m
Duration25/25Duration 135 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

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-27T15:00:01.371830+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 314.19999999999998863131622783839702606201171875,
    "avg_distance_m": 317.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 2.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 135,
    "overlap_duration_s": 8102,
    "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": "2026-07-27T09:25:42+00:00",
        "end": "2026-07-27T11:40:44+00:00"
    },
    "points_count": {
        "vessel_a": 12,
        "vessel_b": 12
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 314m, avg 317m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 135 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 (HISTRIA AZURE and STAR C) maintained close proximity (min 314m, avg 317m) for 135 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": 34.70890829999999738220139988698065280914306640625,
            "lon": 33.3215282000000030393493943847715854644775390625
        },
        "time_window": {
            "start_ts": "2026-07-27T09:25:42+00:00",
            "end_ts": "2026-07-27T11:40:44+00:00"
        },
        "searched_at": "2026-07-27T15:00:01.371830+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
Jul 27, 2026 09:08 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 42 AIS positions
  • Period: 2026-07-27T09:41:46+00:00 to 2026-07-27T16:17:47+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 396,
    "points_in_zone": 42,
    "first_point": {
        "ts": "2026-07-27T09:41:46+00:00",
        "lat": 34.70770999999999872898115427233278751373291015625,
        "lon": 33.3205999999999988858689903281629085540771484375
    },
    "last_point": {
        "ts": "2026-07-27T16:17:47+00:00",
        "lat": 34.70772000000000190311766345985233783721923828125,
        "lon": 33.32058500000000123009158414788544178009033203125
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 09:08 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 3 meters
  • Data Points: 42 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 396,
    "points": 42,
    "centroid": {
        "lat": 34.70771683095239268368459306657314300537109375,
        "lon": 33.3205830452380808992529637180268764495849609375
    },
    "bbox": {
        "min_lat": 34.70769169999999803621903993189334869384765625,
        "min_lon": 33.320549999999997226041159592568874359130859375,
        "max_lat": 34.70773669999999810897861607372760772705078125,
        "max_lon": 33.32060830000000350992195308208465576171875
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jul 27, 2026 09:00 UTC 95/100 ▼
Vessel A: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 67 meters
  • Average Distance: 69 meters
  • Duration: 2h 36m
  • Period: 2026-07-27T09:00:24+00:00 to 2026-07-27T11:36:23+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 (STI MIGHTY and STAR C) maintained close proximity (min 67m, avg 69m) for 156 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness25/25Min distance 67m, avg 69m
Duration25/25Duration 156 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: 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: 2026-07-27T15:30:43.609320+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 66.7000000000000028421709430404007434844970703125,
    "avg_distance_m": 69.2000000000000028421709430404007434844970703125,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 156,
    "overlap_duration_s": 9359,
    "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": "2026-07-27T09:00:24+00:00",
        "end": "2026-07-27T11:36:23+00:00"
    },
    "points_count": {
        "vessel_a": 18,
        "vessel_b": 18
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 67m, avg 69m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 156 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Eastern Mediterranean Surveillance Zone"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (STI MIGHTY and STAR C) maintained close proximity (min 67m, avg 69m) for 156 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.707917600000001812077243812382221221923828125,
            "lon": 33.3202911999999997760824044235050678253173828125
        },
        "time_window": {
            "start_ts": "2026-07-27T09:00:24+00:00",
            "end_ts": "2026-07-27T11:36:23+00:00"
        },
        "searched_at": "2026-07-27T15:30:43.609320+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 27, 2026 08:38 UTC 95/100 ▼
Vessel A: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 67 meters
  • Average Distance: 69 meters
  • Duration: 2h 44m
  • Period: 2026-07-27T08:51:27+00:00 to 2026-07-27T11:36:23+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 (STI MIGHTY and STAR C) maintained close proximity (min 67m, avg 69m) for 165 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 67m, avg 69m
Duration25/25Duration 165 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": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 66.7000000000000028421709430404007434844970703125,
    "avg_distance_m": 69.2999999999999971578290569595992565155029296875,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 164.900000000000005684341886080801486968994140625,
    "overlap_duration_s": 9896,
    "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": "2026-07-27T08:51:27+00:00",
        "end": "2026-07-27T11:36:23+00:00"
    },
    "points_count": {
        "vessel_a": 20,
        "vessel_b": 20
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 67m, avg 69m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 165 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 (STI MIGHTY and STAR C) maintained close proximity (min 67m, avg 69m) for 165 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
Jul 27, 2026 08:37 UTC 80/100 ▼
Vessel A: IMO 9357561 (HISTRIA AZURE) Marshall Is
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 314 meters
  • Average Distance: 317 meters
  • Duration: 3h 3m
  • Period: 2026-07-27T08:37:43+00:00 to 2026-07-27T11:40:44+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 314m, avg 317m) for 183 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 Tightness10/25Min distance 314m, avg 317m
Duration25/25Duration 183 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

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-27T14:30:02.157471+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 313.5,
    "avg_distance_m": 316.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 2.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 183,
    "overlap_duration_s": 10981,
    "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": "2026-07-27T08:37:43+00:00",
        "end": "2026-07-27T11:40:44+00:00"
    },
    "points_count": {
        "vessel_a": 13,
        "vessel_b": 13
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 314m, avg 317m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 183 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 (HISTRIA AZURE and STAR C) maintained close proximity (min 314m, avg 317m) for 183 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": 34.70890779999999864458004594780504703521728515625,
            "lon": 33.32152810000000187073965207673609256744384765625
        },
        "time_window": {
            "start_ts": "2026-07-27T08:37:43+00:00",
            "end_ts": "2026-07-27T11:40:44+00:00"
        },
        "searched_at": "2026-07-27T14:30:02.157471+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
Jul 27, 2026 08:02 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 27m
  • Data Points: 43 AIS positions
  • Period: 2026-07-27T08:59:46+00:00 to 2026-07-27T15:26:48+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 387,
    "points_in_zone": 43,
    "first_point": {
        "ts": "2026-07-27T08:59:46+00:00",
        "lat": 34.7077067000000027974238037131726741790771484375,
        "lon": 33.32057669999999660603862139396369457244873046875
    },
    "last_point": {
        "ts": "2026-07-27T15:26:48+00:00",
        "lat": 34.70769500000000107320374809205532073974609375,
        "lon": 33.32057499999999805595507496036589145660400390625
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 08:02 UTC 75.0% ▼
  • Duration: 6h 27m
  • Radius: 3 meters
  • Data Points: 43 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 387,
    "points": 43,
    "centroid": {
        "lat": 34.70771477209303412791996379382908344268798828125,
        "lon": 33.3205829744185990648475126363337039947509765625
    },
    "bbox": {
        "min_lat": 34.707688300000000936051947064697742462158203125,
        "min_lon": 33.320549999999997226041159592568874359130859375,
        "max_lat": 34.70773669999999810897861607372760772705078125,
        "max_lon": 33.32060830000000350992195308208465576171875
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 27, 2026 07:08 UTC 95/100 ▼
Vessel A: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 67 meters
  • Average Distance: 69 meters
  • Duration: 3h 56m
  • Period: 2026-07-27T07:39:29+00:00 to 2026-07-27T11:36:23+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 (STI MIGHTY and STAR C) maintained close proximity (min 67m, avg 69m) for 237 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 67m, avg 69m
Duration25/25Duration 237 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": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 66.7000000000000028421709430404007434844970703125,
    "avg_distance_m": 69.400000000000005684341886080801486968994140625,
    "distance_consistency_m": 1.1999999999999999555910790149937383830547332763671875,
    "duration_minutes": 236.900000000000005684341886080801486968994140625,
    "overlap_duration_s": 14214,
    "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": "2026-07-27T07:39:29+00:00",
        "end": "2026-07-27T11:36:23+00:00"
    },
    "points_count": {
        "vessel_a": 27,
        "vessel_b": 27
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 67m, avg 69m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 237 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 (STI MIGHTY and STAR C) maintained close proximity (min 67m, avg 69m) for 237 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
Jul 27, 2026 07:07 UTC 80/100 ▼
Vessel A: IMO 9357561 (HISTRIA AZURE) Marshall Is
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 313 meters
  • Average Distance: 317 meters
  • Duration: 4h 33m
  • Period: 2026-07-27T07:07:42+00:00 to 2026-07-27T11:40:44+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 313m, avg 317m) for 273 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 Tightness10/25Min distance 313m, avg 317m
Duration25/25Duration 273 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

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-27T13:30:01.310037+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 312.80000000000001136868377216160297393798828125,
    "avg_distance_m": 316.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 2.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 273,
    "overlap_duration_s": 16382,
    "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": "2026-07-27T07:07:42+00:00",
        "end": "2026-07-27T11:40:44+00:00"
    },
    "points_count": {
        "vessel_a": 17,
        "vessel_b": 17
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 313m, avg 317m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 273 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 (HISTRIA AZURE and STAR C) maintained close proximity (min 313m, avg 317m) for 273 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": 34.70890299999999939473127597011625766754150390625,
            "lon": 33.321527099999997290069586597383022308349609375
        },
        "time_window": {
            "start_ts": "2026-07-27T07:07:42+00:00",
            "end_ts": "2026-07-27T11:40:44+00:00"
        },
        "searched_at": "2026-07-27T13:30:01.310037+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
Jul 27, 2026 07:05 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 33m
  • Data Points: 45 AIS positions
  • Period: 2026-07-27T07:50:45+00:00 to 2026-07-27T14:23:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 393.1000000000000227373675443232059478759765625,
    "points_in_zone": 45,
    "first_point": {
        "ts": "2026-07-27T07:50:45+00:00",
        "lat": 34.70770999999999872898115427233278751373291015625,
        "lon": 33.32058669999999978017513058148324489593505859375
    },
    "last_point": {
        "ts": "2026-07-27T14:23:49+00:00",
        "lat": 34.70769169999999803621903993189334869384765625,
        "lon": 33.32058669999999978017513058148324489593505859375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 07:05 UTC 75.0% ▼
  • Duration: 6h 33m
  • Radius: 4 meters
  • Data Points: 45 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3.5,
    "duration_minutes": 393.1000000000000227373675443232059478759765625,
    "points": 45,
    "centroid": {
        "lat": 34.7077141511111193494798499159514904022216796875,
        "lon": 33.32058210444444767972527188248932361602783203125
    },
    "bbox": {
        "min_lat": 34.707688300000000936051947064697742462158203125,
        "min_lon": 33.320549999999997226041159592568874359130859375,
        "max_lat": 34.70773669999999810897861607372760772705078125,
        "max_lon": 33.32060830000000350992195308208465576171875
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 27, 2026 06:26 UTC 80/100 ▼
Vessel A: IMO 9357561 (HISTRIA AZURE) Marshall Is
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 313 meters
  • Average Distance: 317 meters
  • Duration: 5h 3m
  • Period: 2026-07-27T06:37:40+00:00 to 2026-07-27T11:40:44+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 313m, avg 317m) for 303 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 313m, avg 317m
Duration25/25Duration 303 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": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 312.80000000000001136868377216160297393798828125,
    "avg_distance_m": 316.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 2.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 303.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 18184,
    "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": "2026-07-27T06:37:40+00:00",
        "end": "2026-07-27T11:40:44+00:00"
    },
    "points_count": {
        "vessel_a": 21,
        "vessel_b": 21
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 313m, avg 317m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 303 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \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 (HISTRIA AZURE and STAR C) maintained close proximity (min 313m, avg 317m) for 303 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
Jul 27, 2026 06:05 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 44 AIS positions
  • Period: 2026-07-27T06:50:52+00:00 to 2026-07-27T13:20:52+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 390,
    "points_in_zone": 44,
    "first_point": {
        "ts": "2026-07-27T06:50:52+00:00",
        "lat": 34.70770999999999872898115427233278751373291015625,
        "lon": 33.32059000000000281715983874164521694183349609375
    },
    "last_point": {
        "ts": "2026-07-27T13:20:52+00:00",
        "lat": 34.70771669999999886613295529969036579132080078125,
        "lon": 33.32058829999999716164893470704555511474609375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 06:05 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 4 meters
  • Data Points: 44 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 390,
    "points": 44,
    "centroid": {
        "lat": 34.7077086409091037921825773082673549652099609375,
        "lon": 33.32058192954544750818968168459832668304443359375
    },
    "bbox": {
        "min_lat": 34.70767670000000038044163375161588191986083984375,
        "min_lon": 33.320549999999997226041159592568874359130859375,
        "max_lat": 34.707733300000001008811523206532001495361328125,
        "max_lon": 33.3206050000000004729372449219226837158203125
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jul 27, 2026 06:00 UTC 95/100 ▼
Vessel A: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 67 meters
  • Average Distance: 70 meters
  • Duration: 5h 36m
  • Period: 2026-07-27T06:00:23+00:00 to 2026-07-27T11:36:23+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 (STI MIGHTY and STAR C) maintained close proximity (min 67m, avg 70m) for 336 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 67m, avg 70m
Duration25/25Duration 336 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: 2026-07-27T12:45:22.155628+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 66.7000000000000028421709430404007434844970703125,
    "avg_distance_m": 69.599999999999994315658113919198513031005859375,
    "distance_consistency_m": 1.3000000000000000444089209850062616169452667236328125,
    "duration_minutes": 336,
    "overlap_duration_s": 20160,
    "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": "2026-07-27T06:00:23+00:00",
        "end": "2026-07-27T11:36:23+00:00"
    },
    "points_count": {
        "vessel_a": 41,
        "vessel_b": 41
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 67m, avg 70m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 336 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 (STI MIGHTY and STAR C) maintained close proximity (min 67m, avg 70m) for 336 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": 34.70791200000000031877789297141134738922119140625,
            "lon": 33.32029030000000346944943885318934917449951171875
        },
        "time_window": {
            "start_ts": "2026-07-27T06:00:23+00:00",
            "end_ts": "2026-07-27T11:36:23+00:00"
        },
        "searched_at": "2026-07-27T12:45:22.155628+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 27, 2026 05:11 UTC 80/100 ▼
Vessel A: IMO 9357561 (HISTRIA AZURE) Marshall Is
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 313 meters
  • Average Distance: 317 meters
  • Duration: 5h 27m
  • Period: 2026-07-27T05:13:42+00:00 to 2026-07-27T10:40:41+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 313m, avg 317m) 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 Tightness10/25Min distance 313m, avg 317m
Duration25/25Duration 327 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": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 312.80000000000001136868377216160297393798828125,
    "avg_distance_m": 317.30000000000001136868377216160297393798828125,
    "distance_consistency_m": 2.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 327,
    "overlap_duration_s": 19619,
    "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": "2026-07-27T05:13:42+00:00",
        "end": "2026-07-27T10:40:41+00:00"
    },
    "points_count": {
        "vessel_a": 20,
        "vessel_b": 20
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 313m, avg 317m"
            },
            "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 \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 (HISTRIA AZURE and STAR C) maintained close proximity (min 313m, avg 317m) 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
Sts Eastern Mediterranean Surveillance Zone
Jul 27, 2026 05:06 UTC 95/100 ▼
Vessel A: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 67 meters
  • Average Distance: 70 meters
  • Duration: 5h 53m
  • Period: 2026-07-27T05:42:34+00:00 to 2026-07-27T11:36:23+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 (STI MIGHTY and STAR C) maintained close proximity (min 67m, avg 70m) for 354 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 67m, avg 70m
Duration25/25Duration 354 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": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 66.7000000000000028421709430404007434844970703125,
    "avg_distance_m": 69.7999999999999971578290569595992565155029296875,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 353.80000000000001136868377216160297393798828125,
    "overlap_duration_s": 21229,
    "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": "2026-07-27T05:42:34+00:00",
        "end": "2026-07-27T11:36:23+00:00"
    },
    "points_count": {
        "vessel_a": 45,
        "vessel_b": 45
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 67m, avg 70m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 354 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 (STI MIGHTY and STAR C) maintained close proximity (min 67m, avg 70m) for 354 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
Jul 27, 2026 05:02 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 47 AIS positions
  • Period: 2026-07-27T05:41:45+00:00 to 2026-07-27T12:17:50+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 396.1000000000000227373675443232059478759765625,
    "points_in_zone": 47,
    "first_point": {
        "ts": "2026-07-27T05:41:45+00:00",
        "lat": 34.707688300000000936051947064697742462158203125,
        "lon": 33.32058500000000123009158414788544178009033203125
    },
    "last_point": {
        "ts": "2026-07-27T12:17:50+00:00",
        "lat": 34.70771330000000176596586243249475955963134765625,
        "lon": 33.32057329999999950587152852676808834075927734375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 05:02 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 3 meters
  • Data Points: 47 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 396.1000000000000227373675443232059478759765625,
    "points": 47,
    "centroid": {
        "lat": 34.70770454042553154749839450232684612274169921875,
        "lon": 33.3205796829787317392401746474206447601318359375
    },
    "bbox": {
        "min_lat": 34.70767670000000038044163375161588191986083984375,
        "min_lon": 33.3205482999999986759576131589710712432861328125,
        "max_lat": 34.7077316999999965219103614799678325653076171875,
        "max_lon": 33.3206050000000004729372449219226837158203125
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 27, 2026 04:45 UTC 95/100 ▼
Vessel A: IMO 9854739 (STI MIGHTY) MARSHALL ISLANDS
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 68 meters
  • Average Distance: 70 meters
  • Duration: 5h 33m
  • Period: 2026-07-27T04:45:24+00:00 to 2026-07-27T10:18:27+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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 70m) for 333 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 68m, avg 70m
Duration25/25Duration 333 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": 538010459,
        "imo": 9854739,
        "name": "STI MIGHTY",
        "flag": "MARSHALL ISLANDS"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 68.2000000000000028421709430404007434844970703125,
    "avg_distance_m": 70.2999999999999971578290569595992565155029296875,
    "distance_consistency_m": 1.399999999999999911182158029987476766109466552734375,
    "duration_minutes": 333.1000000000000227373675443232059478759765625,
    "overlap_duration_s": 19983,
    "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": "2026-07-27T04:45:24+00:00",
        "end": "2026-07-27T10:18:27+00:00"
    },
    "points_count": {
        "vessel_a": 39,
        "vessel_b": 39
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 95,
        "components": {
            "distance_tightness": {
                "score": 25,
                "max": 25,
                "detail": "Min distance 68m, avg 70m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 333 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 (STI MIGHTY and STAR C) maintained close proximity (min 68m, avg 70m) for 333 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
Jul 27, 2026 04:05 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 50 AIS positions
  • Period: 2026-07-27T04:53:45+00:00 to 2026-07-27T11:29:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 396.1000000000000227373675443232059478759765625,
    "points_in_zone": 50,
    "first_point": {
        "ts": "2026-07-27T04:53:45+00:00",
        "lat": 34.70772170000000045320120989345014095306396484375,
        "lon": 33.32058330000000268000803771428763866424560546875
    },
    "last_point": {
        "ts": "2026-07-27T11:29:49+00:00",
        "lat": 34.70772000000000190311766345985233783721923828125,
        "lon": 33.32058829999999716164893470704555511474609375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 04:05 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 3 meters
  • Data Points: 50 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3.20000000000000017763568394002504646778106689453125,
    "duration_minutes": 396.1000000000000227373675443232059478759765625,
    "points": 50,
    "centroid": {
        "lat": 34.70770406999999835306880413554608821868896484375,
        "lon": 33.32057877000001866463207988999783992767333984375
    },
    "bbox": {
        "min_lat": 34.70767670000000038044163375161588191986083984375,
        "min_lon": 33.3205482999999986759576131589710712432861328125,
        "max_lat": 34.70772670000000204026946448720991611480712890625,
        "max_lon": 33.3206050000000004729372449219226837158203125
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jul 27, 2026 03:31 UTC 65/100 ▼
Vessel A: IMO 9357561 (HISTRIA AZURE) Marshall Is
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 317 meters
  • Average Distance: 317 meters
  • Duration: 54 minutes
  • Period: 2026-07-27T03:31:43+00:00 to 2026-07-27T04:25:46+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 317m, avg 317m) for 54 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness10/25Min distance 317m, avg 317m
Duration10/25Duration 54 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±0m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Eastern Mediterranean Surveillance Zone

🛰️ Satellite Corroboration

✗ SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-07-27T09:45:17.085205+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 317,
    "avg_distance_m": 317.3999999999999772626324556767940521240234375,
    "distance_consistency_m": 0.5,
    "duration_minutes": 54,
    "overlap_duration_s": 3243,
    "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": "2026-07-27T03:31:43+00:00",
        "end": "2026-07-27T04:25:46+00:00"
    },
    "points_count": {
        "vessel_a": 3,
        "vessel_b": 3
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 317m, avg 317m"
            },
            "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 \u00b10m"
            },
            "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 AZURE and STAR C) maintained close proximity (min 317m, avg 317m) for 54 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Eastern Mediterranean Surveillance Zone, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 34.70891449999999878173184697516262531280517578125,
            "lon": 33.32152339999999668407326680608093738555908203125
        },
        "time_window": {
            "start_ts": "2026-07-27T03:31:43+00:00",
            "end_ts": "2026-07-27T04:25:46+00:00"
        },
        "searched_at": "2026-07-27T09:45:17.085205+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Eastern Mediterranean Surveillance Zone
Jul 27, 2026 03:14 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 30m
  • Data Points: 43 AIS positions
  • Period: 2026-07-27T03:47:43+00:00 to 2026-07-27T10:17:50+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 390.1000000000000227373675443232059478759765625,
    "points_in_zone": 43,
    "first_point": {
        "ts": "2026-07-27T03:47:43+00:00",
        "lat": 34.70771500000000031604940886609256267547607421875,
        "lon": 33.32057999999999964302332955412566661834716796875
    },
    "last_point": {
        "ts": "2026-07-27T10:17:50+00:00",
        "lat": 34.7077067000000027974238037131726741790771484375,
        "lon": 33.32056829999999791880327393300831317901611328125
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 03:14 UTC 75.0% ▼
  • Duration: 6h 30m
  • Radius: 3 meters
  • Data Points: 43 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3,
    "duration_minutes": 390.1000000000000227373675443232059478759765625,
    "points": 43,
    "centroid": {
        "lat": 34.7077027558139405982728931121528148651123046875,
        "lon": 33.32057946279070392847643233835697174072265625
    },
    "bbox": {
        "min_lat": 34.70767670000000038044163375161588191986083984375,
        "min_lon": 33.3205482999999986759576131589710712432861328125,
        "max_lat": 34.70772670000000204026946448720991611480712890625,
        "max_lon": 33.3206050000000004729372449219226837158203125
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts Eastern Mediterranean Surveillance Zone
Jul 27, 2026 02:17 UTC 80/100 ▼
Vessel A: IMO 9357561 (HISTRIA AZURE) Marshall Is
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 317 meters
  • Average Distance: 318 meters
  • Duration: 2h 9m
  • Period: 2026-07-27T02:16:46+00:00 to 2026-07-27T04:25:46+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Eastern Mediterranean Surveillance Zone

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (HISTRIA AZURE and STAR C) maintained close proximity (min 316m, avg 318m) for 129 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 Tightness10/25Min distance 316m, avg 318m
Duration25/25Duration 129 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": 538002852,
        "imo": 9357561,
        "name": "HISTRIA AZURE",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 316.5,
    "avg_distance_m": 317.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 1.1999999999999999555910790149937383830547332763671875,
    "duration_minutes": 129,
    "overlap_duration_s": 7740,
    "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": "2026-07-27T02:16:46+00:00",
        "end": "2026-07-27T04:25:46+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 316m, avg 318m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 129 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 (HISTRIA AZURE and STAR C) maintained close proximity (min 316m, avg 318m) for 129 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
Jul 27, 2026 02:05 UTC 80.0% ▼
  • Zone: Eastern Mediterranean Surveillance Zone
  • Duration: 6h 36m
  • Data Points: 46 AIS positions
  • Period: 2026-07-27T02:41:47+00:00 to 2026-07-27T09:17:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "dwell_minutes": 396,
    "points_in_zone": 46,
    "first_point": {
        "ts": "2026-07-27T02:41:47+00:00",
        "lat": 34.70770329999999859182935324497520923614501953125,
        "lon": 33.3205932999999987487171893008053302764892578125
    },
    "last_point": {
        "ts": "2026-07-27T09:17:49+00:00",
        "lat": 34.7077067000000027974238037131726741790771484375,
        "lon": 33.32058829999999716164893470704555511474609375
    }
}
Methodology: 2026.01.18
Loiter Eastern Mediterranean Surveillance Zone
Jul 27, 2026 02:05 UTC 75.0% ▼
  • Duration: 6h 36m
  • Radius: 3 meters
  • Data Points: 46 AIS positions
  • Centroid: 34.7077, 33.3206
  • Zone: Eastern Mediterranean Surveillance Zone
Show Raw Evidence JSON
{
    "radius_m": 3,
    "duration_minutes": 396,
    "points": 46,
    "centroid": {
        "lat": 34.70770130652172014151801704429090023040771484375,
        "lon": 33.320577578260866857817745767533779144287109375
    },
    "bbox": {
        "min_lat": 34.70767670000000038044163375161588191986083984375,
        "min_lon": 33.3205482999999986759576131589710712432861328125,
        "max_lat": 34.70772170000000045320120989345014095306396484375,
        "max_lon": 33.3206050000000004729372449219226837158203125
    },
    "zone_id": "discovered_041"
}
Methodology: 2026.01.18
Sts🛰️✗ Eastern Mediterranean Surveillance Zone
Jul 27, 2026 02:02 UTC 75/100 ▼
Vessel A: IMO 9900825 (CLEAROCEAN MAVERICK) SINGAPORE
Vessel B: IMO 9411135 (STAR C) LIBERIA
  • Minimum Distance: 313 meters
  • Average Distance: 314 meters
  • Duration: 1h 59m
  • Period: 2026-07-27T02:02:07+00:00 to 2026-07-27T04:01:57+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 (CLEAROCEAN MAVERICK and STAR C) maintained close proximity (min 313m, avg 314m) for 120 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 Tightness10/25Min distance 313m, avg 314m
Duration20/25Duration 120 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: 2026-07-27T08:45:01.331493+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 563333500,
        "imo": 9900825,
        "name": "CLEAROCEAN MAVERICK",
        "flag": "SINGAPORE"
    },
    "vessel_b": {
        "mmsi": 636022659,
        "imo": 9411135,
        "name": "STAR C",
        "flag": "LIBERIA"
    },
    "min_distance_m": 313.1000000000000227373675443232059478759765625,
    "avg_distance_m": 313.8999999999999772626324556767940521240234375,
    "distance_consistency_m": 0.90000000000000002220446049250313080847263336181640625,
    "duration_minutes": 119.7999999999999971578290569595992565155029296875,
    "overlap_duration_s": 7190,
    "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": "2026-07-27T02:02:07+00:00",
        "end": "2026-07-27T04:01:57+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "discovered_041",
    "zone_name": "Eastern Mediterranean Surveillance Zone",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 10,
                "max": 25,
                "detail": "Min distance 313m, avg 314m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 120 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 (CLEAROCEAN MAVERICK and STAR C) maintained close proximity (min 313m, avg 314m) for 120 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": 34.70866720000000071877366281114518642425537109375,
            "lon": 33.321835800000002336673787795007228851318359375
        },
        "time_window": {
            "start_ts": "2026-07-27T02:02:07+00:00",
            "end_ts": "2026-07-27T04:01:57+00:00"
        },
        "searched_at": "2026-07-27T08:45:01.331493+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18

Recent Position Data

Time (UTC) Lat Lon Speed Course Zone
Jul 28 09:13 34.4927 34.0169 12.5 kn 108.1° Eastern Mediterranean Surveillance Zone
Jul 28 09:04 34.5026 33.9815 12.5 kn 109.0° Eastern Mediterranean Surveillance Zone
Jul 28 09:03 34.5037 33.9775 12.5 kn 108.3° Eastern Mediterranean Surveillance Zone
Jul 28 09:00 34.5072 33.9649 12.5 kn 108.7° Eastern Mediterranean Surveillance Zone
Jul 28 08:57 34.5108 33.9499 12.6 kn 102.9° Eastern Mediterranean Surveillance Zone
Jul 28 08:52 34.5134 33.9303 12.5 kn 96.9° Eastern Mediterranean Surveillance Zone
Jul 28 08:51 34.5138 33.9255 12.5 kn 96.2° Eastern Mediterranean Surveillance Zone
Jul 28 08:48 34.5147 33.9123 12.4 kn 95.1° Eastern Mediterranean Surveillance Zone
Jul 28 08:43 34.5188 33.8954 12.6 kn 109.7° Eastern Mediterranean Surveillance Zone
Jul 28 08:40 34.5226 33.8836 12.6 kn 111.6° Eastern Mediterranean Surveillance Zone
Jul 28 08:37 34.5274 33.8683 12.6 kn 111.6° Eastern Mediterranean Surveillance Zone
Jul 28 08:33 34.5317 33.8551 12.6 kn 109.6° Eastern Mediterranean Surveillance Zone
Jul 28 08:30 34.5357 33.8425 12.6 kn 111.2° Eastern Mediterranean Surveillance Zone
Jul 28 08:27 34.5399 33.8286 12.5 kn 111.7° Eastern Mediterranean Surveillance Zone
Jul 28 08:20 34.5490 33.8003 12.5 kn 110.6° Eastern Mediterranean Surveillance Zone
Jul 28 08:18 34.5501 33.7964 12.5 kn 109.2° Eastern Mediterranean Surveillance Zone
Jul 28 08:17 34.5513 33.7924 12.5 kn 109.5° Eastern Mediterranean Surveillance Zone
Jul 28 08:15 34.5546 33.7819 12.5 kn 110.9° Eastern Mediterranean Surveillance Zone
Jul 28 08:13 34.5562 33.7766 12.5 kn 109.4° Eastern Mediterranean Surveillance Zone
Jul 28 08:10 34.5602 33.7634 12.5 kn 111.2° Eastern Mediterranean Surveillance Zone

Showing 20 of 100 recent positions.

Data Source

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

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