IMO 9458171
Vessel information
Detected Events (100)
- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 2h 10m
- Data Points: 7 AIS positions
- Period: 2026-09-15T05:06:37+00:00 to 2026-09-15T07:16:35+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 130,
"points_in_zone": 7,
"first_point": {
"ts": "2026-09-15T05:06:37+00:00",
"lat": 34.4319167000000021516825654543936252593994140625,
"lon": 33.52952830000000261634340859018266201019287109375
},
"last_point": {
"ts": "2026-09-15T07:16:35+00:00",
"lat": 34.24922169999999965739334584213793277740478515625,
"lon": 34.02257670000000189247657544910907745361328125
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 3h 13m
- Data Points: 14 AIS positions
- Period: 2026-09-15T04:02:47+00:00 to 2026-09-15T07:16:35+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 193.80000000000001136868377216160297393798828125,
"points_in_zone": 14,
"first_point": {
"ts": "2026-09-15T04:02:47+00:00",
"lat": 34.4284049999999979263520799577236175537109375,
"lon": 33.52830999999999761485014460049569606781005859375
},
"last_point": {
"ts": "2026-09-15T07:16:35+00:00",
"lat": 34.24922169999999965739334584213793277740478515625,
"lon": 34.02257670000000189247657544910907745361328125
}
}- Duration: 1h 54m
- Radius: 410 meters
- Data Points: 22 AIS positions
- Centroid: 34.4284, 33.5281
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 410.3999999999999772626324556767940521240234375,
"duration_minutes": 114.2000000000000028421709430404007434844970703125,
"points": 22,
"centroid": {
"lat": 34.42839773181817264458004501648247241973876953125,
"lon": 33.52814999545454810458977590315043926239013671875
},
"bbox": {
"min_lat": 34.42741000000000184400050784461200237274169921875,
"min_lon": 33.52718999999999738292899564839899539947509765625,
"max_lat": 34.4319167000000021516825654543936252593994140625,
"max_lon": 33.52952830000000261634340859018266201019287109375
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 4h 4m
- Data Points: 28 AIS positions
- Period: 2026-09-15T03:12:25+00:00 to 2026-09-15T07:16:35+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 244.19999999999998863131622783839702606201171875,
"points_in_zone": 28,
"first_point": {
"ts": "2026-09-15T03:12:25+00:00",
"lat": 34.42741000000000184400050784461200237274169921875,
"lon": 33.52718999999999738292899564839899539947509765625
},
"last_point": {
"ts": "2026-09-15T07:16:35+00:00",
"lat": 34.24922169999999965739334584213793277740478515625,
"lon": 34.02257670000000189247657544910907745361328125
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 5h 12m
- Data Points: 29 AIS positions
- Period: 2026-09-15T02:04:28+00:00 to 2026-09-15T07:16:35+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 312.1000000000000227373675443232059478759765625,
"points_in_zone": 29,
"first_point": {
"ts": "2026-09-15T02:04:28+00:00",
"lat": 34.42896170000000211075530387461185455322265625,
"lon": 33.526156700000001364969648420810699462890625
},
"last_point": {
"ts": "2026-09-15T07:16:35+00:00",
"lat": 34.24922169999999965739334584213793277740478515625,
"lon": 34.02257670000000189247657544910907745361328125
}
}- Duration: 3h 2m
- Radius: 410 meters
- Data Points: 23 AIS positions
- Centroid: 34.4284, 33.5281
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 410.3999999999999772626324556767940521240234375,
"duration_minutes": 182.19999999999998863131622783839702606201171875,
"points": 23,
"centroid": {
"lat": 34.4284222521739167177656781859695911407470703125,
"lon": 33.5280633304347901457731495611369609832763671875
},
"bbox": {
"min_lat": 34.42741000000000184400050784461200237274169921875,
"min_lon": 33.526156700000001364969648420810699462890625,
"max_lat": 34.4319167000000021516825654543936252593994140625,
"max_lon": 33.52952830000000261634340859018266201019287109375
},
"zone_id": "discovered_039"
}- Duration: 3h 57m
- Radius: 713 meters
- Data Points: 28 AIS positions
- Centroid: 34.4289, 33.5275
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 713.299999999999954525264911353588104248046875,
"duration_minutes": 237.19999999999998863131622783839702606201171875,
"points": 28,
"centroid": {
"lat": 34.428898992857142502543865703046321868896484375,
"lon": 33.5275057107142941958954907022416591644287109375
},
"bbox": {
"min_lat": 34.42741000000000184400050784461200237274169921875,
"min_lon": 33.5228733000000005404217517934739589691162109375,
"max_lat": 34.43405829999999667734300601296126842498779296875,
"max_lon": 33.52952830000000261634340859018266201019287109375
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 13m
- Data Points: 35 AIS positions
- Period: 2026-09-15T01:03:05+00:00 to 2026-09-15T07:16:35+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 373.5,
"points_in_zone": 35,
"first_point": {
"ts": "2026-09-15T01:03:05+00:00",
"lat": 34.434678300000001627267920412123203277587890625,
"lon": 33.52218169999999730634954175911843776702880859375
},
"last_point": {
"ts": "2026-09-15T07:16:35+00:00",
"lat": 34.24922169999999965739334584213793277740478515625,
"lon": 34.02257670000000189247657544910907745361328125
}
}- Duration: 4h 34m
- Radius: 1,012 meters
- Data Points: 40 AIS positions
- Centroid: 34.4311, 33.5253
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 1011.700000000000045474735088646411895751953125,
"duration_minutes": 274.5,
"points": 40,
"centroid": {
"lat": 34.43113358499999065998053993098437786102294921875,
"lon": 33.52528783500000741923940950073301792144775390625
},
"bbox": {
"min_lat": 34.42741000000000184400050784461200237274169921875,
"min_lon": 33.51802330000000296195139526389539241790771484375,
"max_lat": 34.437984999999997626218828372657299041748046875,
"max_lon": 33.52952830000000261634340859018266201019287109375
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 31m
- Data Points: 42 AIS positions
- Period: 2026-09-15T00:44:56+00:00 to 2026-09-15T07:16:35+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 391.6000000000000227373675443232059478759765625,
"points_in_zone": 42,
"first_point": {
"ts": "2026-09-15T00:44:56+00:00",
"lat": 34.43662669999999792480593896470963954925537109375,
"lon": 33.5196717000000035113771446049213409423828125
},
"last_point": {
"ts": "2026-09-15T07:16:35+00:00",
"lat": 34.24922169999999965739334584213793277740478515625,
"lon": 34.02257670000000189247657544910907745361328125
}
}- Duration: 2h 9m
- Radius: 1,067 meters
- Data Points: 29 AIS positions
- Centroid: 34.4365, 33.5190
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 1066.700000000000045474735088646411895751953125,
"duration_minutes": 129.099999999999994315658113919198513031005859375,
"points": 29,
"centroid": {
"lat": 34.43653597931034937573713250458240509033203125,
"lon": 33.51900742068966110309702344238758087158203125
},
"bbox": {
"min_lat": 34.42896170000000211075530387461185455322265625,
"min_lon": 33.51212000000000301724867313168942928314208984375,
"max_lat": 34.4409117000000009056748240254819393157958984375,
"max_lon": 33.526156700000001364969648420810699462890625
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 10m
- Data Points: 69 AIS positions
- Period: 2026-09-14T23:07:45+00:00 to 2026-09-15T05:18:06+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 370.3999999999999772626324556767940521240234375,
"points_in_zone": 69,
"first_point": {
"ts": "2026-09-14T23:07:45+00:00",
"lat": 34.44232000000000226691554416902363300323486328125,
"lon": 33.5009567000000032521711545996367931365966796875
},
"last_point": {
"ts": "2026-09-15T05:18:06+00:00",
"lat": 34.42378999999999678038875572383403778076171875,
"lon": 33.547453300000000808722688816487789154052734375
}
}- Duration: 2h 12m
- Radius: 1,334 meters
- Data Points: 43 AIS positions
- Centroid: 34.4396, 33.5123
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 1333.5,
"duration_minutes": 132.900000000000005684341886080801486968994140625,
"points": 43,
"centroid": {
"lat": 34.43962589302326904316942091099917888641357421875,
"lon": 33.5122849604651236177232931368052959442138671875
},
"bbox": {
"min_lat": 34.43405829999999667734300601296126842498779296875,
"min_lon": 33.49823330000000254358383244834840297698974609375,
"max_lat": 34.44262169999999656511135981418192386627197265625,
"max_lon": 33.5228733000000005404217517934739589691162109375
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 35m
- Data Points: 76 AIS positions
- Period: 2026-09-14T22:42:15+00:00 to 2026-09-15T05:18:06+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 395.8999999999999772626324556767940521240234375,
"points_in_zone": 76,
"first_point": {
"ts": "2026-09-14T22:42:15+00:00",
"lat": 34.4428817000000009329596650786697864532470703125,
"lon": 33.49460499999999996134647517465054988861083984375
},
"last_point": {
"ts": "2026-09-15T05:18:06+00:00",
"lat": 34.42378999999999678038875572383403778076171875,
"lon": 33.547453300000000808722688816487789154052734375
}
}- Duration: 1h 52m
- Radius: 1,212 meters
- Data Points: 37 AIS positions
- Centroid: 34.4424, 33.4987
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 1211.799999999999954525264911353588104248046875,
"duration_minutes": 112.7999999999999971578290569595992565155029296875,
"points": 37,
"centroid": {
"lat": 34.44242144324324073068055440671741962432861328125,
"lon": 33.49873904594594620220959768630564212799072265625
},
"bbox": {
"min_lat": 34.441041699999999536885297857224941253662109375,
"min_lon": 33.4856233000000003130480763502418994903564453125,
"max_lat": 34.4435433000000017500497051514685153961181640625,
"max_lon": 33.51126670000000018490027287043631076812744140625
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 37m
- Data Points: 88 AIS positions
- Period: 2026-09-14T21:42:14+00:00 to 2026-09-15T04:19:18+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 397.1000000000000227373675443232059478759765625,
"points_in_zone": 88,
"first_point": {
"ts": "2026-09-14T21:42:14+00:00",
"lat": 34.44413329999999717756509198807179927825927734375,
"lon": 33.4819432999999975208993419073522090911865234375
},
"last_point": {
"ts": "2026-09-15T04:19:18+00:00",
"lat": 34.42900670000000218351488001644611358642578125,
"lon": 33.5286832999999973026206134818494319915771484375
}
}- Duration: 1h 47m
- Radius: 1,162 meters
- Data Points: 36 AIS positions
- Centroid: 34.4443, 33.4816
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 1161.700000000000045474735088646411895751953125,
"duration_minutes": 107.2999999999999971578290569595992565155029296875,
"points": 36,
"centroid": {
"lat": 34.444339263888878122088499367237091064453125,
"lon": 33.4815673166666698534754686988890171051025390625
},
"bbox": {
"min_lat": 34.44293669999999707442839280702173709869384765625,
"min_lon": 33.4691499999999990677679306827485561370849609375,
"max_lat": 34.44630000000000080717654782347381114959716796875,
"max_lon": 33.49387829999999866004145587794482707977294921875
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 37m
- Data Points: 97 AIS positions
- Period: 2026-09-14T20:41:53+00:00 to 2026-09-15T03:19:35+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 397.69999999999998863131622783839702606201171875,
"points_in_zone": 97,
"first_point": {
"ts": "2026-09-14T20:41:53+00:00",
"lat": 34.44702000000000197132976609282195568084716796875,
"lon": 33.46672000000000224417817662470042705535888671875
},
"last_point": {
"ts": "2026-09-15T03:19:35+00:00",
"lat": 34.42743500000000267391442321240901947021484375,
"lon": 33.527410000000003265085979364812374114990234375
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 32m
- Data Points: 124 AIS positions
- Period: 2026-09-14T19:31:38+00:00 to 2026-09-15T02:04:28+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 392.80000000000001136868377216160297393798828125,
"points_in_zone": 124,
"first_point": {
"ts": "2026-09-14T19:31:38+00:00",
"lat": 34.4885000000000019326762412674725055694580078125,
"lon": 33.3386899999999997135091689415276050567626953125
},
"last_point": {
"ts": "2026-09-15T02:04:28+00:00",
"lat": 34.42896170000000211075530387461185455322265625,
"lon": 33.526156700000001364969648420810699462890625
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 30m
- Data Points: 133 AIS positions
- Period: 2026-09-14T18:50:05+00:00 to 2026-09-15T01:20:45+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 390.69999999999998863131622783839702606201171875,
"points_in_zone": 133,
"first_point": {
"ts": "2026-09-14T18:50:05+00:00",
"lat": 34.4929699999999996862243278883397579193115234375,
"lon": 33.31616669999999658102751709520816802978515625
},
"last_point": {
"ts": "2026-09-15T01:20:45+00:00",
"lat": 34.4328900000000004411049303598701953887939453125,
"lon": 33.52365999999999957026375341229140758514404296875
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 34m
- Data Points: 136 AIS positions
- Period: 2026-09-14T17:52:44+00:00 to 2026-09-15T00:26:46+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 394,
"points_in_zone": 136,
"first_point": {
"ts": "2026-09-14T17:52:44+00:00",
"lat": 34.49876669999999734272932983003556728363037109375,
"lon": 33.29505999999999943383954814635217189788818359375
},
"last_point": {
"ts": "2026-09-15T00:26:46+00:00",
"lat": 34.43852170000000256777639151550829410552978515625,
"lon": 33.5170083000000005313268047757446765899658203125
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 35m
- Data Points: 136 AIS positions
- Period: 2026-09-14T16:52:44+00:00 to 2026-09-14T23:27:43+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 395,
"points_in_zone": 136,
"first_point": {
"ts": "2026-09-14T16:52:44+00:00",
"lat": 34.485178300000001172520569525659084320068359375,
"lon": 33.40501830000000182963049155659973621368408203125
},
"last_point": {
"ts": "2026-09-14T23:27:43+00:00",
"lat": 34.44189000000000078216544352471828460693359375,
"lon": 33.50567670000000219943103729747235774993896484375
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 35m
- Data Points: 139 AIS positions
- Period: 2026-09-14T15:50:05+00:00 to 2026-09-14T22:25:05+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 395,
"points_in_zone": 139,
"first_point": {
"ts": "2026-09-14T15:50:05+00:00",
"lat": 34.46354000000000183945303433574736118316650390625,
"lon": 33.527406700000000228101271204650402069091796875
},
"last_point": {
"ts": "2026-09-14T22:25:05+00:00",
"lat": 34.44293669999999707442839280702173709869384765625,
"lon": 33.49124669999999781566657475195825099945068359375
}
}- Minimum Distance: 4 meters
- Average Distance: 29 meters
- Duration: 57 minutes
- Period: 2026-09-14T14:28:57+00:00 to 2026-09-14T15:25:55+00:00
- Vessel A Avg Speed: 1.0 knots
- Vessel B Avg Speed: 1.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (GAZ INTERCEPTOR and GAZ VICTORY) maintained close proximity (min 4m, avg 29m) for 57 minutes. Both vessels were slow-moving (avg speeds 1.0 and 1.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 4m, avg 29m |
| Duration | 10/25 | Duration 57 minutes |
| Speed Stability | 18/20 | both very slow; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±20m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 351259000,
"imo": 9291224,
"name": "GAZ INTERCEPTOR",
"flag": "Panama"
},
"vessel_b": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"min_distance_m": 3.70000000000000017763568394002504646778106689453125,
"avg_distance_m": 28.699999999999999289457264239899814128875732421875,
"distance_consistency_m": 19.5,
"duration_minutes": 57,
"overlap_duration_s": 3418,
"speed_a_avg": 0.9899999999999999911182158029987476766109466552734375,
"speed_a_std": 0.2600000000000000088817841970012523233890533447265625,
"speed_b_avg": 0.9699999999999999733546474089962430298328399658203125,
"speed_b_std": 0.2399999999999999911182158029987476766109466552734375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.9899999999999999911182158029987476766109466552734375,
"max_sog": 2
},
"vessel_b": {
"avg_sog": 0.9699999999999999733546474089962430298328399658203125,
"max_sog": 1.899999999999999911182158029987476766109466552734375
}
},
"time_window": {
"start": "2026-09-14T14:28:57+00:00",
"end": "2026-09-14T15:25:55+00:00"
},
"points_count": {
"vessel_a": 21,
"vessel_b": 21
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 78,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 4m, avg 29m"
},
"duration": {
"score": 10,
"max": 25,
"detail": "Duration 57 minutes"
},
"speed_stability": {
"score": 18,
"max": 20,
"detail": "both very slow; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b120m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (GAZ INTERCEPTOR and GAZ VICTORY) maintained close proximity (min 4m, avg 29m) for 57 minutes. Both vessels were slow-moving (avg speeds 1.0 and 1.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 37m
- Data Points: 137 AIS positions
- Period: 2026-09-14T14:50:45+00:00 to 2026-09-14T21:27:55+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 397.19999999999998863131622783839702606201171875,
"points_in_zone": 137,
"first_point": {
"ts": "2026-09-14T14:50:45+00:00",
"lat": 34.4429133000000007314156391657888889312744140625,
"lon": 33.53847669999999681067492929287254810333251953125
},
"last_point": {
"ts": "2026-09-14T21:27:55+00:00",
"lat": 34.44478000000000150748746818862855434417724609375,
"lon": 33.47848330000000061090759118087589740753173828125
}
}- Minimum Distance: 3 meters
- Average Distance: 40 meters
- Duration: 2h 1m
- Period: 2026-09-14T13:24:26+00:00 to 2026-09-14T15:25:55+00:00
- Vessel A Avg Speed: 1.0 knots
- Vessel B Avg Speed: 1.0 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (GAZ INTERCEPTOR and GAZ VICTORY) maintained close proximity (min 3m, avg 40m) for 122 minutes. Both vessels were slow-moving (avg speeds 1.0 and 1.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 3m, avg 40m |
| Duration | 25/25 | Duration 122 minutes |
| Speed Stability | 18/20 | both very slow; very stable speeds |
| Distance Consistency | 12/15 | Distance variance ±34m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 351259000,
"imo": 9291224,
"name": "GAZ INTERCEPTOR",
"flag": "Panama"
},
"vessel_b": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"min_distance_m": 2.79999999999999982236431605997495353221893310546875,
"avg_distance_m": 39.7000000000000028421709430404007434844970703125,
"distance_consistency_m": 34.39999999999999857891452847979962825775146484375,
"duration_minutes": 121.5,
"overlap_duration_s": 7289,
"speed_a_avg": 0.95999999999999996447286321199499070644378662109375,
"speed_a_std": 0.2099999999999999922284388276239042170345783233642578125,
"speed_b_avg": 0.9699999999999999733546474089962430298328399658203125,
"speed_b_std": 0.190000000000000002220446049250313080847263336181640625,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.95999999999999996447286321199499070644378662109375,
"max_sog": 2
},
"vessel_b": {
"avg_sog": 0.9699999999999999733546474089962430298328399658203125,
"max_sog": 1.899999999999999911182158029987476766109466552734375
}
},
"time_window": {
"start": "2026-09-14T13:24:26+00:00",
"end": "2026-09-14T15:25:55+00:00"
},
"points_count": {
"vessel_a": 38,
"vessel_b": 38
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 90,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 3m, avg 40m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 122 minutes"
},
"speed_stability": {
"score": 18,
"max": 20,
"detail": "both very slow; very stable speeds"
},
"distance_consistency": {
"score": 12,
"max": 15,
"detail": "Distance variance \u00b134m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (GAZ INTERCEPTOR and GAZ VICTORY) maintained close proximity (min 3m, avg 40m) for 122 minutes. Both vessels were slow-moving (avg speeds 1.0 and 1.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 36m
- Data Points: 133 AIS positions
- Period: 2026-09-14T13:51:44+00:00 to 2026-09-14T20:28:34+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 396.80000000000001136868377216160297393798828125,
"points_in_zone": 133,
"first_point": {
"ts": "2026-09-14T13:51:44+00:00",
"lat": 34.44099829999999684559952584095299243927001953125,
"lon": 33.5193866999999983136149239726364612579345703125
},
"last_point": {
"ts": "2026-09-14T20:28:34+00:00",
"lat": 34.44798999999999722376742283813655376434326171875,
"lon": 33.463768299999998134808265604078769683837890625
}
}- Minimum Distance: 2 meters
- Average Distance: 39 meters
- Duration: 3h 15m
- Period: 2026-09-14T12:10:26+00:00 to 2026-09-14T15:25:55+00:00
- Vessel A Avg Speed: 0.9 knots
- Vessel B Avg Speed: 0.9 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (GAZ INTERCEPTOR and GAZ VICTORY) maintained close proximity (min 2m, avg 39m) for 196 minutes. Both vessels were slow-moving (avg speeds 0.9 and 0.9 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 2m, avg 39m |
| Duration | 25/25 | Duration 196 minutes |
| Speed Stability | 18/20 | both very slow; very stable speeds |
| Distance Consistency | 12/15 | Distance variance ±35m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
🛰️ Satellite Corroboration
No satellite imagery for this time/location
No Sentinel-1 scenes covering AOI and time window
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 351259000,
"imo": 9291224,
"name": "GAZ INTERCEPTOR",
"flag": "Panama"
},
"vessel_b": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"min_distance_m": 1.600000000000000088817841970012523233890533447265625,
"avg_distance_m": 39.2999999999999971578290569595992565155029296875,
"distance_consistency_m": 35.10000000000000142108547152020037174224853515625,
"duration_minutes": 195.5,
"overlap_duration_s": 11729,
"speed_a_avg": 0.91000000000000003108624468950438313186168670654296875,
"speed_a_std": 0.200000000000000011102230246251565404236316680908203125,
"speed_b_avg": 0.92000000000000003996802888650563545525074005126953125,
"speed_b_std": 0.179999999999999993338661852249060757458209991455078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.91000000000000003108624468950438313186168670654296875,
"max_sog": 2
},
"vessel_b": {
"avg_sog": 0.92000000000000003996802888650563545525074005126953125,
"max_sog": 1.899999999999999911182158029987476766109466552734375
}
},
"time_window": {
"start": "2026-09-14T12:10:26+00:00",
"end": "2026-09-14T15:25:55+00:00"
},
"points_count": {
"vessel_a": 53,
"vessel_b": 53
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 90,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 2m, avg 39m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 196 minutes"
},
"speed_stability": {
"score": 18,
"max": 20,
"detail": "both very slow; very stable speeds"
},
"distance_consistency": {
"score": 12,
"max": 15,
"detail": "Distance variance \u00b135m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (GAZ INTERCEPTOR and GAZ VICTORY) maintained close proximity (min 2m, avg 39m) for 196 minutes. Both vessels were slow-moving (avg speeds 0.9 and 0.9 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 34.44064920000000284971974906511604785919189453125,
"lon": 33.52305489999999821293386048637330532073974609375
},
"time_window": {
"start_ts": "2026-09-14T12:10:26+00:00",
"end_ts": "2026-09-14T15:25:55+00:00"
},
"searched_at": "2026-09-14T18:45:08.052801+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Duration: 1h 32m
- Radius: 1,393 meters
- Data Points: 25 AIS positions
- Centroid: 34.4385, 33.5080
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 1393.40000000000009094947017729282379150390625,
"duration_minutes": 92.7000000000000028421709430404007434844970703125,
"points": 25,
"centroid": {
"lat": 34.4385162040000096794756245799362659454345703125,
"lon": 33.50797767200000265574999502860009670257568359375
},
"bbox": {
"min_lat": 34.43488669999999984838723321445286273956298828125,
"min_lon": 33.493463300000001936496119014918804168701171875,
"max_lat": 34.441135000000002719389158301055431365966796875,
"max_lon": 33.520094999999997753548086620867252349853515625
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 34m
- Data Points: 124 AIS positions
- Period: 2026-09-14T12:53:04+00:00 to 2026-09-14T19:27:36+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 394.5,
"points_in_zone": 124,
"first_point": {
"ts": "2026-09-14T12:53:04+00:00",
"lat": 34.4372333000000026004272513091564178466796875,
"lon": 33.50200000000000244426701101474463939666748046875
},
"last_point": {
"ts": "2026-09-14T19:27:36+00:00",
"lat": 34.49214330000000217069100472144782543182373046875,
"lon": 33.3305500000000023419488570652902126312255859375
}
}- Duration: 1h 35m
- Radius: 1,328 meters
- Data Points: 24 AIS positions
- Centroid: 34.4365, 33.5001
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 1328.299999999999954525264911353588104248046875,
"duration_minutes": 95,
"points": 24,
"centroid": {
"lat": 34.4365054249999928970282780937850475311279296875,
"lon": 33.500093125000006466507329605519771575927734375
},
"bbox": {
"min_lat": 34.432181700000001001171767711639404296875,
"min_lon": 33.4866166999999990139258443377912044525146484375,
"max_lat": 34.4394367000000016787453205324709415435791015625,
"max_lon": 33.51183830000000085647116065956652164459228515625
},
"zone_id": "discovered_039"
}- Minimum Distance: 2 meters
- Average Distance: 39 meters
- Duration: 4h 16m
- Period: 2026-09-14T11:09:56+00:00 to 2026-09-14T15:25:55+00:00
- Vessel A Avg Speed: 0.9 knots
- Vessel B Avg Speed: 0.9 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (GAZ INTERCEPTOR and GAZ VICTORY) maintained close proximity (min 2m, avg 39m) for 256 minutes. Both vessels were slow-moving (avg speeds 0.9 and 0.9 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 2m, avg 39m |
| Duration | 25/25 | Duration 256 minutes |
| Speed Stability | 18/20 | both very slow; very stable speeds |
| Distance Consistency | 12/15 | Distance variance ±36m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
🛰️ Satellite Corroboration
No satellite imagery for this time/location
No Sentinel-1 scenes covering AOI and time window
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 351259000,
"imo": 9291224,
"name": "GAZ INTERCEPTOR",
"flag": "Panama"
},
"vessel_b": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"min_distance_m": 1.600000000000000088817841970012523233890533447265625,
"avg_distance_m": 39.2000000000000028421709430404007434844970703125,
"distance_consistency_m": 36.2999999999999971578290569595992565155029296875,
"duration_minutes": 256,
"overlap_duration_s": 15359,
"speed_a_avg": 0.89000000000000001332267629550187848508358001708984375,
"speed_a_std": 0.190000000000000002220446049250313080847263336181640625,
"speed_b_avg": 0.89000000000000001332267629550187848508358001708984375,
"speed_b_std": 0.179999999999999993338661852249060757458209991455078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.89000000000000001332267629550187848508358001708984375,
"max_sog": 2
},
"vessel_b": {
"avg_sog": 0.89000000000000001332267629550187848508358001708984375,
"max_sog": 1.899999999999999911182158029987476766109466552734375
}
},
"time_window": {
"start": "2026-09-14T11:09:56+00:00",
"end": "2026-09-14T15:25:55+00:00"
},
"points_count": {
"vessel_a": 62,
"vessel_b": 62
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 90,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 2m, avg 39m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 256 minutes"
},
"speed_stability": {
"score": 18,
"max": 20,
"detail": "both very slow; very stable speeds"
},
"distance_consistency": {
"score": 12,
"max": 15,
"detail": "Distance variance \u00b136m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (GAZ INTERCEPTOR and GAZ VICTORY) maintained close proximity (min 2m, avg 39m) for 256 minutes. Both vessels were slow-moving (avg speeds 0.9 and 0.9 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 34.439186100000000578802428208291530609130859375,
"lon": 33.51722269999999781475708005018532276153564453125
},
"time_window": {
"start_ts": "2026-09-14T11:09:56+00:00",
"end_ts": "2026-09-14T15:25:55+00:00"
},
"searched_at": "2026-09-14T17:45:09.522128+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 35m
- Data Points: 117 AIS positions
- Period: 2026-09-14T11:52:55+00:00 to 2026-09-14T18:28:26+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 395.5,
"points_in_zone": 117,
"first_point": {
"ts": "2026-09-14T11:52:55+00:00",
"lat": 34.432181700000001001171767711639404296875,
"lon": 33.4866166999999990139258443377912044525146484375
},
"last_point": {
"ts": "2026-09-14T18:28:26+00:00",
"lat": 34.49497000000000213049133890308439731597900390625,
"lon": 33.30803829999999976507751853205263614654541015625
}
}- Minimum Distance: 1 meters
- Average Distance: 36 meters
- Duration: 5h 16m
- Period: 2026-09-14T10:09:06+00:00 to 2026-09-14T15:25:55+00:00
- Vessel A Avg Speed: 0.9 knots
- Vessel B Avg Speed: 0.9 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (GAZ INTERCEPTOR and GAZ VICTORY) maintained close proximity (min 1m, avg 36m) for 317 minutes. Both vessels were slow-moving (avg speeds 0.9 and 0.9 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 1m, avg 36m |
| Duration | 25/25 | Duration 317 minutes |
| Speed Stability | 18/20 | both very slow; very stable speeds |
| Distance Consistency | 12/15 | Distance variance ±34m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
🛰️ Satellite Corroboration
No satellite imagery for this time/location
No Sentinel-1 scenes covering AOI and time window
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 351259000,
"imo": 9291224,
"name": "GAZ INTERCEPTOR",
"flag": "Panama"
},
"vessel_b": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"min_distance_m": 0.8000000000000000444089209850062616169452667236328125,
"avg_distance_m": 36.39999999999999857891452847979962825775146484375,
"distance_consistency_m": 34.39999999999999857891452847979962825775146484375,
"duration_minutes": 316.80000000000001136868377216160297393798828125,
"overlap_duration_s": 19009,
"speed_a_avg": 0.86999999999999999555910790149937383830547332763671875,
"speed_a_std": 0.179999999999999993338661852249060757458209991455078125,
"speed_b_avg": 0.86999999999999999555910790149937383830547332763671875,
"speed_b_std": 0.1700000000000000122124532708767219446599483489990234375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.86999999999999999555910790149937383830547332763671875,
"max_sog": 2
},
"vessel_b": {
"avg_sog": 0.86999999999999999555910790149937383830547332763671875,
"max_sog": 1.899999999999999911182158029987476766109466552734375
}
},
"time_window": {
"start": "2026-09-14T10:09:06+00:00",
"end": "2026-09-14T15:25:55+00:00"
},
"points_count": {
"vessel_a": 74,
"vessel_b": 74
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 90,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 1m, avg 36m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 317 minutes"
},
"speed_stability": {
"score": 18,
"max": 20,
"detail": "both very slow; very stable speeds"
},
"distance_consistency": {
"score": 12,
"max": 15,
"detail": "Distance variance \u00b134m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (GAZ INTERCEPTOR and GAZ VICTORY) maintained close proximity (min 1m, avg 36m) for 317 minutes. Both vessels were slow-moving (avg speeds 0.9 and 0.9 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 34.436611999999996669430402107536792755126953125,
"lon": 33.5095000000000027284841053187847137451171875
},
"time_window": {
"start_ts": "2026-09-14T10:09:06+00:00",
"end_ts": "2026-09-14T15:25:55+00:00"
},
"searched_at": "2026-09-14T16:45:06.493508+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 37m
- Data Points: 112 AIS positions
- Period: 2026-09-14T10:50:54+00:00 to 2026-09-14T17:28:44+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 397.80000000000001136868377216160297393798828125,
"points_in_zone": 112,
"first_point": {
"ts": "2026-09-14T10:50:54+00:00",
"lat": 34.4252467000000024199835024774074554443359375,
"lon": 33.47254170000000073059709393419325351715087890625
},
"last_point": {
"ts": "2026-09-14T17:28:44+00:00",
"lat": 34.49464830000000148402250488288700580596923828125,
"lon": 33.33437330000000287100192508660256862640380859375
}
}- Duration: 1h 30m
- Radius: 1,102 meters
- Data Points: 23 AIS positions
- Centroid: 34.4304, 33.4828
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 1101.90000000000009094947017729282379150390625,
"duration_minutes": 90.2000000000000028421709430404007434844970703125,
"points": 23,
"centroid": {
"lat": 34.43035616956522204645807505585253238677978515625,
"lon": 33.48282173478261114496490336023271083831787109375
},
"bbox": {
"min_lat": 34.4252467000000024199835024774074554443359375,
"min_lon": 33.47254170000000073059709393419325351715087890625,
"max_lat": 34.43488669999999984838723321445286273956298828125,
"max_lon": 33.493463300000001936496119014918804168701171875
},
"zone_id": "discovered_039"
}- Minimum Distance: 1 meters
- Average Distance: 38 meters
- Duration: 5h 56m
- Period: 2026-09-14T09:29:57+00:00 to 2026-09-14T15:25:55+00:00
- Vessel A Avg Speed: 0.9 knots
- Vessel B Avg Speed: 0.9 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (GAZ INTERCEPTOR and GAZ VICTORY) maintained close proximity (min 1m, avg 38m) for 356 minutes. Both vessels were slow-moving (avg speeds 0.9 and 0.9 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 1m, avg 38m |
| Duration | 25/25 | Duration 356 minutes |
| Speed Stability | 18/20 | both very slow; very stable speeds |
| Distance Consistency | 12/15 | Distance variance ±35m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 351259000,
"imo": 9291224,
"name": "GAZ INTERCEPTOR",
"flag": "Panama"
},
"vessel_b": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"min_distance_m": 0.8000000000000000444089209850062616169452667236328125,
"avg_distance_m": 37.60000000000000142108547152020037174224853515625,
"distance_consistency_m": 35.2000000000000028421709430404007434844970703125,
"duration_minutes": 356,
"overlap_duration_s": 21358,
"speed_a_avg": 0.939999999999999946709294817992486059665679931640625,
"speed_a_std": 0.289999999999999980015985556747182272374629974365234375,
"speed_b_avg": 0.93000000000000004884981308350688777863979339599609375,
"speed_b_std": 0.2800000000000000266453525910037569701671600341796875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.939999999999999946709294817992486059665679931640625,
"max_sog": 2
},
"vessel_b": {
"avg_sog": 0.93000000000000004884981308350688777863979339599609375,
"max_sog": 2
}
},
"time_window": {
"start": "2026-09-14T09:29:57+00:00",
"end": "2026-09-14T15:25:55+00:00"
},
"points_count": {
"vessel_a": 83,
"vessel_b": 83
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 90,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 1m, avg 38m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 356 minutes"
},
"speed_stability": {
"score": 18,
"max": 20,
"detail": "both very slow; very stable speeds"
},
"distance_consistency": {
"score": 12,
"max": 15,
"detail": "Distance variance \u00b135m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (GAZ INTERCEPTOR and GAZ VICTORY) maintained close proximity (min 1m, avg 38m) for 356 minutes. Both vessels were slow-moving (avg speeds 0.9 and 0.9 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Duration: 1h 42m
- Radius: 1,963 meters
- Data Points: 33 AIS positions
- Centroid: 34.4180, 33.4670
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 1962.799999999999954525264911353588104248046875,
"duration_minutes": 102.2000000000000028421709430404007434844970703125,
"points": 33,
"centroid": {
"lat": 34.41798288181818321618266054429113864898681640625,
"lon": 33.466977269696968733114772476255893707275390625
},
"bbox": {
"min_lat": 34.4022317000000015241312212310731410980224609375,
"min_lon": 33.4628517000000016423655324615538120269775390625,
"max_lat": 34.42639170000000348181856679730117321014404296875,
"max_lon": 33.47670329999999694337020628154277801513671875
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 36m
- Data Points: 115 AIS positions
- Period: 2026-09-14T09:51:54+00:00 to 2026-09-14T16:28:44+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 396.80000000000001136868377216160297393798828125,
"points_in_zone": 115,
"first_point": {
"ts": "2026-09-14T09:51:54+00:00",
"lat": 34.4148832999999996218321030028164386749267578125,
"lon": 33.4628517000000016423655324615538120269775390625
},
"last_point": {
"ts": "2026-09-14T16:28:44+00:00",
"lat": 34.478059999999999263309291563928127288818359375,
"lon": 33.45305170000000316576915793120861053466796875
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 32m
- Data Points: 110 AIS positions
- Period: 2026-09-14T08:57:36+00:00 to 2026-09-14T15:29:45+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 392.1000000000000227373675443232059478759765625,
"points_in_zone": 110,
"first_point": {
"ts": "2026-09-14T08:57:36+00:00",
"lat": 34.39338670000000064419509726576507091522216796875,
"lon": 33.507845000000003210516297258436679840087890625
},
"last_point": {
"ts": "2026-09-14T15:29:45+00:00",
"lat": 34.44629499999999922010829322971403598785400390625,
"lon": 33.54829500000000308546077576465904712677001953125
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 37m
- Data Points: 104 AIS positions
- Period: 2026-09-14T07:50:03+00:00 to 2026-09-14T14:27:14+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 397.19999999999998863131622783839702606201171875,
"points_in_zone": 104,
"first_point": {
"ts": "2026-09-14T07:50:03+00:00",
"lat": 34.36777330000000318932507070712745189666748046875,
"lon": 33.61405500000000046156856114976108074188232421875
},
"last_point": {
"ts": "2026-09-14T14:27:14+00:00",
"lat": 34.44272500000000292175172944553196430206298828125,
"lon": 33.531104999999996607584762386977672576904296875
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 37m
- Data Points: 100 AIS positions
- Period: 2026-09-14T06:50:13+00:00 to 2026-09-14T13:27:55+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 397.69999999999998863131622783839702606201171875,
"points_in_zone": 100,
"first_point": {
"ts": "2026-09-14T06:50:13+00:00",
"lat": 34.3885599999999982401277520693838596343994140625,
"lon": 33.63648500000000041154635255225002765655517578125
},
"last_point": {
"ts": "2026-09-14T13:27:55+00:00",
"lat": 34.4394367000000016787453205324709415435791015625,
"lon": 33.51183830000000085647116065956652164459228515625
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 33m
- Data Points: 89 AIS positions
- Period: 2026-09-14T05:54:25+00:00 to 2026-09-14T12:27:55+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 393.5,
"points_in_zone": 89,
"first_point": {
"ts": "2026-09-14T05:54:25+00:00",
"lat": 34.43671499999999952024154481478035449981689453125,
"lon": 33.6041383000000024594555725343525409698486328125
},
"last_point": {
"ts": "2026-09-14T12:27:55+00:00",
"lat": 34.43541830000000203426679945550858974456787109375,
"lon": 33.49518330000000077006916399113833904266357421875
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 37m
- Data Points: 80 AIS positions
- Period: 2026-09-14T04:50:34+00:00 to 2026-09-14T11:28:15+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 397.69999999999998863131622783839702606201171875,
"points_in_zone": 80,
"first_point": {
"ts": "2026-09-14T04:50:34+00:00",
"lat": 34.43320829999999688197931391187012195587158203125,
"lon": 33.60065999999999775127434986643493175506591796875
},
"last_point": {
"ts": "2026-09-14T11:28:15+00:00",
"lat": 34.4297049999999984493115334771573543548583984375,
"lon": 33.480878300000000535874278284609317779541015625
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 34m
- Data Points: 60 AIS positions
- Period: 2026-09-14T03:44:46+00:00 to 2026-09-14T10:18:54+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 394.1000000000000227373675443232059478759765625,
"points_in_zone": 60,
"first_point": {
"ts": "2026-09-14T03:44:46+00:00",
"lat": 34.4308017000000035068296710960566997528076171875,
"lon": 33.598534999999998262865119613707065582275390625
},
"last_point": {
"ts": "2026-09-14T10:18:54+00:00",
"lat": 34.420625000000001136868377216160297393798828125,
"lon": 33.46578000000000230329533223994076251983642578125
}
}- Duration: 2h 34m
- Radius: 514 meters
- Data Points: 10 AIS positions
- Centroid: 34.4345, 33.6019
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 514,
"duration_minutes": 154.5,
"points": 10,
"centroid": {
"lat": 34.43447766999999970494172885082662105560302734375,
"lon": 33.6019388200000008737333700992166996002197265625
},
"bbox": {
"min_lat": 34.4308017000000035068296710960566997528076171875,
"min_lon": 33.598534999999998262865119613707065582275390625,
"max_lat": 34.437444999999996753103914670646190643310546875,
"max_lon": 33.60477829999999954679879010654985904693603515625
},
"zone_id": "discovered_039"
}- Duration: 3h 21m
- Radius: 477 meters
- Data Points: 12 AIS positions
- Centroid: 34.4340, 33.6017
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 477.30000000000001136868377216160297393798828125,
"duration_minutes": 201.19999999999998863131622783839702606201171875,
"points": 12,
"centroid": {
"lat": 34.433980558333331600806559436023235321044921875,
"lon": 33.6016994333333371969274594448506832122802734375
},
"bbox": {
"min_lat": 34.43050170000000065329004428349435329437255859375,
"min_lon": 33.598534999999998262865119613707065582275390625,
"max_lat": 34.437444999999996753103914670646190643310546875,
"max_lon": 33.60477829999999954679879010654985904693603515625
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 34m
- Data Points: 45 AIS positions
- Period: 2026-09-14T02:43:20+00:00 to 2026-09-14T09:17:35+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 394.19999999999998863131622783839702606201171875,
"points_in_zone": 45,
"first_point": {
"ts": "2026-09-14T02:43:20+00:00",
"lat": 34.43050170000000065329004428349435329437255859375,
"lon": 33.6000216999999992140146787278354167938232421875
},
"last_point": {
"ts": "2026-09-14T09:17:35+00:00",
"lat": 34.4022317000000015241312212310731410980224609375,
"lon": 33.47670329999999694337020628154277801513671875
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 24m
- Data Points: 41 AIS positions
- Period: 2026-09-14T01:47:57+00:00 to 2026-09-14T08:12:54+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 384.8999999999999772626324556767940521240234375,
"points_in_zone": 41,
"first_point": {
"ts": "2026-09-14T01:47:57+00:00",
"lat": 34.43967669999999969832060742191970348358154296875,
"lon": 33.5015216999999978497726260684430599212646484375
},
"last_point": {
"ts": "2026-09-14T08:12:54+00:00",
"lat": 34.3758983000000029051079764030873775482177734375,
"lon": 33.57828829999999697974999435245990753173828125
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 36m
- Data Points: 29 AIS positions
- Period: 2026-09-14T00:51:33+00:00 to 2026-09-14T07:28:24+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 396.8999999999999772626324556767940521240234375,
"points_in_zone": 29,
"first_point": {
"ts": "2026-09-14T00:51:33+00:00",
"lat": 34.44119669999999899800968705676496028900146484375,
"lon": 33.49830670000000054642441682517528533935546875
},
"last_point": {
"ts": "2026-09-14T07:28:24+00:00",
"lat": 34.3605500000000034788172342814505100250244140625,
"lon": 33.64589169999999995752659742720425128936767578125
}
}- Duration: 1h 46m
- Radius: 330 meters
- Data Points: 10 AIS positions
- Centroid: 34.4416, 33.4988
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 329.8999999999999772626324556767940521240234375,
"duration_minutes": 106.900000000000005684341886080801486968994140625,
"points": 10,
"centroid": {
"lat": 34.44159417000000900088707567192614078521728515625,
"lon": 33.49877851000000106296283775009214878082275390625
},
"bbox": {
"min_lat": 34.43967669999999969832060742191970348358154296875,
"min_lon": 33.498296699999997372287907637655735015869140625,
"max_lat": 34.44257830000000097925294539891183376312255859375,
"max_lon": 33.5015216999999978497726260684430599212646484375
},
"zone_id": "discovered_039"
}- Duration: 2h 1m
- Radius: 980 meters
- Data Points: 15 AIS positions
- Centroid: 34.4401, 33.4992
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 979.700000000000045474735088646411895751953125,
"duration_minutes": 121.900000000000005684341886080801486968994140625,
"points": 15,
"centroid": {
"lat": 34.44010632666665827628094120882451534271240234375,
"lon": 33.49918389333333124113778467290103435516357421875
},
"bbox": {
"min_lat": 34.43206330000000292557160719297826290130615234375,
"min_lon": 33.49799829999999900564944255165755748748779296875,
"max_lat": 34.44257830000000097925294539891183376312255859375,
"max_lon": 33.503586699999999609644873999059200286865234375
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 30m
- Data Points: 39 AIS positions
- Period: 2026-09-13T23:33:55+00:00 to 2026-09-14T06:04:33+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 390.6000000000000227373675443232059478759765625,
"points_in_zone": 39,
"first_point": {
"ts": "2026-09-13T23:33:55+00:00",
"lat": 34.4153000000000020008883439004421234130859375,
"lon": 33.51532830000000018344508134759962558746337890625
},
"last_point": {
"ts": "2026-09-14T06:04:33+00:00",
"lat": 34.437444999999996753103914670646190643310546875,
"lon": 33.60477829999999954679879010654985904693603515625
}
}- Minimum Distance: 22 meters
- Average Distance: 30 meters
- Duration: 32 minutes
- Period: 2026-09-13T22:13:56+00:00 to 2026-09-13T22:46:05+00:00
- Vessel A Avg Speed: 0.6 knots
- Vessel B Avg Speed: 0.5 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (GAZ VICTORY and GAZ FRATERNITY) maintained close proximity (min 22m, avg 30m) for 32 minutes. Both vessels were slow-moving (avg speeds 0.6 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 22m, avg 30m |
| Duration | 5/25 | Duration 32 minutes |
| Speed Stability | 15/20 | both very slow; stable speeds |
| Distance Consistency | 15/15 | Distance variance ±10m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 372668000,
"imo": 9448487,
"name": "GAZ FRATERNITY",
"flag": "Panama"
},
"min_distance_m": 22,
"avg_distance_m": 30,
"distance_consistency_m": 10,
"duration_minutes": 32.10000000000000142108547152020037174224853515625,
"overlap_duration_s": 1929,
"speed_a_avg": 0.61999999999999999555910790149937383830547332763671875,
"speed_a_std": 0.479999999999999982236431605997495353221893310546875,
"speed_b_avg": 0.4699999999999999733546474089962430298328399658203125,
"speed_b_std": 0.2099999999999999922284388276239042170345783233642578125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.61999999999999999555910790149937383830547332763671875,
"max_sog": 1.8000000000000000444089209850062616169452667236328125
},
"vessel_b": {
"avg_sog": 0.4699999999999999733546474089962430298328399658203125,
"max_sog": 1
}
},
"time_window": {
"start": "2026-09-13T22:13:56+00:00",
"end": "2026-09-13T22:46:05+00:00"
},
"points_count": {
"vessel_a": 8,
"vessel_b": 8
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 70,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 22m, avg 30m"
},
"duration": {
"score": 5,
"max": 25,
"detail": "Duration 32 minutes"
},
"speed_stability": {
"score": 15,
"max": 20,
"detail": "both very slow; stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b110m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (GAZ VICTORY and GAZ FRATERNITY) maintained close proximity (min 22m, avg 30m) for 32 minutes. Both vessels were slow-moving (avg speeds 0.6 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 39m
- Data Points: 50 AIS positions
- Period: 2026-09-13T22:50:05+00:00 to 2026-09-14T05:29:17+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 399.19999999999998863131622783839702606201171875,
"points_in_zone": 50,
"first_point": {
"ts": "2026-09-13T22:50:05+00:00",
"lat": 34.3856382999999965477400110103189945220947265625,
"lon": 33.55262499999999903366187936626374721527099609375
},
"last_point": {
"ts": "2026-09-14T05:29:17+00:00",
"lat": 34.43520670000000194477252080105245113372802734375,
"lon": 33.6025283000000030142473406158387660980224609375
}
}- Duration: 1h 32m
- Radius: 1,109 meters
- Data Points: 20 AIS positions
- Centroid: 34.3926, 33.5487
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 1109.299999999999954525264911353588104248046875,
"duration_minutes": 92.7000000000000028421709430404007434844970703125,
"points": 20,
"centroid": {
"lat": 34.3926044100000041225939639844000339508056640625,
"lon": 33.548683575000012524469639174640178680419921875
},
"bbox": {
"min_lat": 34.38271329999999892379491939209401607513427734375,
"min_lon": 33.54224669999999974834281601943075656890869140625,
"max_lat": 34.3983300000000014051693142391741275787353515625,
"max_lon": 33.55320999999999997953636921010911464691162109375
},
"zone_id": "discovered_039"
}- Minimum Distance: 21 meters
- Average Distance: 44 meters
- Duration: 1h 42m
- Period: 2026-09-13T21:03:16+00:00 to 2026-09-13T22:46:05+00:00
- Vessel A Avg Speed: 0.6 knots
- Vessel B Avg Speed: 0.5 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (GAZ VICTORY and GAZ FRATERNITY) maintained close proximity (min 21m, avg 44m) for 103 minutes. Both vessels were slow-moving (avg speeds 0.6 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 21m, avg 44m |
| Duration | 20/25 | Duration 103 minutes |
| Speed Stability | 18/20 | both very slow; very stable speeds |
| Distance Consistency | 12/15 | Distance variance ±34m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 372668000,
"imo": 9448487,
"name": "GAZ FRATERNITY",
"flag": "Panama"
},
"min_distance_m": 21.199999999999999289457264239899814128875732421875,
"avg_distance_m": 44.2999999999999971578290569595992565155029296875,
"distance_consistency_m": 33.7000000000000028421709430404007434844970703125,
"duration_minutes": 102.7999999999999971578290569595992565155029296875,
"overlap_duration_s": 6169,
"speed_a_avg": 0.5500000000000000444089209850062616169452667236328125,
"speed_a_std": 0.2800000000000000266453525910037569701671600341796875,
"speed_b_avg": 0.4699999999999999733546474089962430298328399658203125,
"speed_b_std": 0.13000000000000000444089209850062616169452667236328125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.5500000000000000444089209850062616169452667236328125,
"max_sog": 1.8000000000000000444089209850062616169452667236328125
},
"vessel_b": {
"avg_sog": 0.4699999999999999733546474089962430298328399658203125,
"max_sog": 1
}
},
"time_window": {
"start": "2026-09-13T21:03:16+00:00",
"end": "2026-09-13T22:46:05+00:00"
},
"points_count": {
"vessel_a": 22,
"vessel_b": 22
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 85,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 21m, avg 44m"
},
"duration": {
"score": 20,
"max": 25,
"detail": "Duration 103 minutes"
},
"speed_stability": {
"score": 18,
"max": 20,
"detail": "both very slow; very stable speeds"
},
"distance_consistency": {
"score": 12,
"max": 15,
"detail": "Distance variance \u00b134m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (GAZ VICTORY and GAZ FRATERNITY) maintained close proximity (min 21m, avg 44m) for 103 minutes. Both vessels were slow-moving (avg speeds 0.6 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 33m
- Data Points: 66 AIS positions
- Period: 2026-09-13T21:10:54+00:00 to 2026-09-14T03:44:46+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 393.8999999999999772626324556767940521240234375,
"points_in_zone": 66,
"first_point": {
"ts": "2026-09-13T21:10:54+00:00",
"lat": 34.3994167000000032885509426705539226531982421875,
"lon": 33.54093999999999908823156147263944149017333984375
},
"last_point": {
"ts": "2026-09-14T03:44:46+00:00",
"lat": 34.4308017000000035068296710960566997528076171875,
"lon": 33.598534999999998262865119613707065582275390625
}
}- Duration: 1h 50m
- Radius: 1,118 meters
- Data Points: 24 AIS positions
- Centroid: 34.3945, 33.5469
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 1117.700000000000045474735088646411895751953125,
"duration_minutes": 110.2000000000000028421709430404007434844970703125,
"points": 24,
"centroid": {
"lat": 34.39452742499999970959834172390401363372802734375,
"lon": 33.54690256250000146565071190707385540008544921875
},
"bbox": {
"min_lat": 34.3856382999999965477400110103189945220947265625,
"min_lon": 33.53954499999999683268470107577741146087646484375,
"max_lat": 34.40077500000000298996383207850158214569091796875,
"max_lon": 33.55320999999999997953636921010911464691162109375
},
"zone_id": "discovered_039"
}- Minimum Distance: 21 meters
- Average Distance: 34 meters
- Duration: 2h 3m
- Period: 2026-09-13T20:41:46+00:00 to 2026-09-13T22:45:26+00:00
- Vessel A Avg Speed: 0.5 knots
- Vessel B Avg Speed: 0.5 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (GAZ FRATERNITY and GAZ VICTORY) maintained close proximity (min 21m, avg 34m) for 124 minutes. Both vessels were slow-moving (avg speeds 0.5 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 21m, avg 34m |
| Duration | 25/25 | Duration 124 minutes |
| Speed Stability | 18/20 | both very slow; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±13m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 372668000,
"imo": 9448487,
"name": "GAZ FRATERNITY",
"flag": "Panama"
},
"vessel_b": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"min_distance_m": 21.199999999999999289457264239899814128875732421875,
"avg_distance_m": 34.39999999999999857891452847979962825775146484375,
"distance_consistency_m": 13.0999999999999996447286321199499070644378662109375,
"duration_minutes": 123.7000000000000028421709430404007434844970703125,
"overlap_duration_s": 7420,
"speed_a_avg": 0.4699999999999999733546474089962430298328399658203125,
"speed_a_std": 0.13000000000000000444089209850062616169452667236328125,
"speed_b_avg": 0.54000000000000003552713678800500929355621337890625,
"speed_b_std": 0.2800000000000000266453525910037569701671600341796875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.4699999999999999733546474089962430298328399658203125,
"max_sog": 1
},
"vessel_b": {
"avg_sog": 0.54000000000000003552713678800500929355621337890625,
"max_sog": 1.8000000000000000444089209850062616169452667236328125
}
},
"time_window": {
"start": "2026-09-13T20:41:46+00:00",
"end": "2026-09-13T22:45:26+00:00"
},
"points_count": {
"vessel_a": 23,
"vessel_b": 23
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 93,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 21m, avg 34m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 124 minutes"
},
"speed_stability": {
"score": 18,
"max": 20,
"detail": "both very slow; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b113m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (GAZ FRATERNITY and GAZ VICTORY) maintained close proximity (min 21m, avg 34m) for 124 minutes. Both vessels were slow-moving (avg speeds 0.5 and 0.5 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 38m
- Data Points: 70 AIS positions
- Period: 2026-09-13T20:52:05+00:00 to 2026-09-14T03:30:05+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 398,
"points_in_zone": 70,
"first_point": {
"ts": "2026-09-13T20:52:05+00:00",
"lat": 34.4018032999999974208549247123301029205322265625,
"lon": 33.53843669999999832498360774479806423187255859375
},
"last_point": {
"ts": "2026-09-14T03:30:05+00:00",
"lat": 34.4308233000000001311491359956562519073486328125,
"lon": 33.59870670000000103527781902812421321868896484375
}
}- Duration: 1h 49m
- Radius: 1,141 meters
- Data Points: 32 AIS positions
- Centroid: 34.4042, 33.5351
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 1140.90000000000009094947017729282379150390625,
"duration_minutes": 109.5,
"points": 32,
"centroid": {
"lat": 34.40420697499998681223587482236325740814208984375,
"lon": 33.53513749062500437503331340849399566650390625
},
"bbox": {
"min_lat": 34.39696500000000156660462380386888980865478515625,
"min_lon": 33.5275400000000018962964531965553760528564453125,
"max_lat": 34.4097416999999978770574671216309070587158203125,
"max_lon": 33.5439482999999967205440043471753597259521484375
},
"zone_id": "discovered_039"
}- Minimum Distance: 18 meters
- Average Distance: 32 meters
- Duration: 3h 41m
- Period: 2026-09-13T19:03:56+00:00 to 2026-09-13T22:45:26+00:00
- Vessel A Avg Speed: 0.5 knots
- Vessel B Avg Speed: 0.6 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (GAZ FRATERNITY and GAZ VICTORY) maintained close proximity (min 18m, avg 32m) for 222 minutes. Both vessels were slow-moving (avg speeds 0.5 and 0.6 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 18m, avg 32m |
| Duration | 25/25 | Duration 222 minutes |
| Speed Stability | 18/20 | both very slow; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±14m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
🛰️ Satellite Corroboration
No satellite imagery for this time/location
No Sentinel-1 scenes covering AOI and time window
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 372668000,
"imo": 9448487,
"name": "GAZ FRATERNITY",
"flag": "Panama"
},
"vessel_b": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"min_distance_m": 17.89999999999999857891452847979962825775146484375,
"avg_distance_m": 32.39999999999999857891452847979962825775146484375,
"distance_consistency_m": 13.5999999999999996447286321199499070644378662109375,
"duration_minutes": 221.5,
"overlap_duration_s": 13290,
"speed_a_avg": 0.520000000000000017763568394002504646778106689453125,
"speed_a_std": 0.11999999999999999555910790149937383830547332763671875,
"speed_b_avg": 0.57999999999999996003197111349436454474925994873046875,
"speed_b_std": 0.200000000000000011102230246251565404236316680908203125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.520000000000000017763568394002504646778106689453125,
"max_sog": 1
},
"vessel_b": {
"avg_sog": 0.57999999999999996003197111349436454474925994873046875,
"max_sog": 1.8000000000000000444089209850062616169452667236328125
}
},
"time_window": {
"start": "2026-09-13T19:03:56+00:00",
"end": "2026-09-13T22:45:26+00:00"
},
"points_count": {
"vessel_a": 47,
"vessel_b": 47
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 93,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 18m, avg 32m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 222 minutes"
},
"speed_stability": {
"score": 18,
"max": 20,
"detail": "both very slow; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b114m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (GAZ FRATERNITY and GAZ VICTORY) maintained close proximity (min 18m, avg 32m) for 222 minutes. Both vessels were slow-moving (avg speeds 0.5 and 0.6 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 34.402173099999998839848558418452739715576171875,
"lon": 33.5372248999999982288500177673995494842529296875
},
"time_window": {
"start_ts": "2026-09-13T19:03:56+00:00",
"end_ts": "2026-09-13T22:45:26+00:00"
},
"searched_at": "2026-09-14T01:45:04.040539+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 36m
- Data Points: 85 AIS positions
- Period: 2026-09-13T19:51:05+00:00 to 2026-09-14T02:27:55+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 396.80000000000001136868377216160297393798828125,
"points_in_zone": 85,
"first_point": {
"ts": "2026-09-13T19:51:05+00:00",
"lat": 34.40891500000000036152414395473897457122802734375,
"lon": 33.52886000000000166210156749002635478973388671875
},
"last_point": {
"ts": "2026-09-14T02:27:55+00:00",
"lat": 34.4329383000000035508492146618664264678955078125,
"lon": 33.57245830000000097470547189004719257354736328125
}
}- Duration: 1h 47m
- Radius: 1,154 meters
- Data Points: 37 AIS positions
- Centroid: 34.4097, 33.5276
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 1153.799999999999954525264911353588104248046875,
"duration_minutes": 107.7000000000000028421709430404007434844970703125,
"points": 37,
"centroid": {
"lat": 34.40971468108107700345499324612319469451904296875,
"lon": 33.52763238108108367896420531906187534332275390625
},
"bbox": {
"min_lat": 34.4029383000000024139808374457061290740966796875,
"min_lon": 33.5185833000000030779119697399437427520751953125,
"max_lat": 34.415833300000002736851456575095653533935546875,
"max_lon": 33.537153299999999944702722132205963134765625
},
"zone_id": "discovered_039"
}- Minimum Distance: 16 meters
- Average Distance: 32 meters
- Duration: 4h 43m
- Period: 2026-09-13T18:02:27+00:00 to 2026-09-13T22:45:26+00:00
- Vessel A Avg Speed: 0.6 knots
- Vessel B Avg Speed: 0.6 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (GAZ FRATERNITY and GAZ VICTORY) maintained close proximity (min 16m, avg 32m) for 283 minutes. Both vessels were slow-moving (avg speeds 0.6 and 0.6 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 16m, avg 32m |
| Duration | 25/25 | Duration 283 minutes |
| Speed Stability | 18/20 | both very slow; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±14m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
🛰️ Satellite Corroboration
No satellite imagery for this time/location
No Sentinel-1 scenes covering AOI and time window
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 372668000,
"imo": 9448487,
"name": "GAZ FRATERNITY",
"flag": "Panama"
},
"vessel_b": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"min_distance_m": 15.5,
"avg_distance_m": 32.39999999999999857891452847979962825775146484375,
"distance_consistency_m": 14.0999999999999996447286321199499070644378662109375,
"duration_minutes": 283,
"overlap_duration_s": 16979,
"speed_a_avg": 0.59999999999999997779553950749686919152736663818359375,
"speed_a_std": 0.2099999999999999922284388276239042170345783233642578125,
"speed_b_avg": 0.64000000000000001332267629550187848508358001708984375,
"speed_b_std": 0.190000000000000002220446049250313080847263336181640625,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.59999999999999997779553950749686919152736663818359375,
"max_sog": 1.600000000000000088817841970012523233890533447265625
},
"vessel_b": {
"avg_sog": 0.64000000000000001332267629550187848508358001708984375,
"max_sog": 1.8000000000000000444089209850062616169452667236328125
}
},
"time_window": {
"start": "2026-09-13T18:02:27+00:00",
"end": "2026-09-13T22:45:26+00:00"
},
"points_count": {
"vessel_a": 68,
"vessel_b": 68
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 93,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 16m, avg 32m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 283 minutes"
},
"speed_stability": {
"score": 18,
"max": 20,
"detail": "both very slow; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b114m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (GAZ FRATERNITY and GAZ VICTORY) maintained close proximity (min 16m, avg 32m) for 283 minutes. Both vessels were slow-moving (avg speeds 0.6 and 0.6 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 34.40725690000000014379111235029995441436767578125,
"lon": 33.5297369999999972378645907156169414520263671875
},
"time_window": {
"start_ts": "2026-09-13T18:02:27+00:00",
"end_ts": "2026-09-13T22:45:26+00:00"
},
"searched_at": "2026-09-14T00:45:07.008998+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 38m
- Data Points: 110 AIS positions
- Period: 2026-09-13T18:20:44+00:00 to 2026-09-14T00:58:55+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 398.19999999999998863131622783839702606201171875,
"points_in_zone": 110,
"first_point": {
"ts": "2026-09-13T18:20:44+00:00",
"lat": 34.41992330000000066547727328725159168243408203125,
"lon": 33.51082670000000263144102063961327075958251953125
},
"last_point": {
"ts": "2026-09-14T00:58:55+00:00",
"lat": 34.4411199999999979581843945197761058807373046875,
"lon": 33.49831999999999965211827657185494899749755859375
}
}- Duration: 1h 42m
- Radius: 1,273 meters
- Data Points: 36 AIS positions
- Centroid: 34.4166, 33.5166
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 1272.90000000000009094947017729282379150390625,
"duration_minutes": 102.2000000000000028421709430404007434844970703125,
"points": 36,
"centroid": {
"lat": 34.416600463888897820652346126735210418701171875,
"lon": 33.51657477222223491253316751681268215179443359375
},
"bbox": {
"min_lat": 34.41036669999999730862327851355075836181640625,
"min_lon": 33.50491670000000254958649748004972934722900390625,
"max_lat": 34.42279169999999766105247545056045055389404296875,
"max_lon": 33.52666330000000272093529929406940937042236328125
},
"zone_id": "discovered_039"
}- Minimum Distance: 16 meters
- Average Distance: 35 meters
- Duration: 5h 42m
- Period: 2026-09-13T17:03:03+00:00 to 2026-09-13T22:45:26+00:00
- Vessel A Avg Speed: 0.7 knots
- Vessel B Avg Speed: 0.7 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (GAZ FRATERNITY and GAZ VICTORY) maintained close proximity (min 16m, avg 35m) for 342 minutes. Both vessels were slow-moving (avg speeds 0.7 and 0.7 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 16m, avg 35m |
| Duration | 25/25 | Duration 342 minutes |
| Speed Stability | 18/20 | both very slow; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±20m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
🛰️ Satellite Corroboration
No satellite imagery for this time/location
No Sentinel-1 scenes covering AOI and time window
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 372668000,
"imo": 9448487,
"name": "GAZ FRATERNITY",
"flag": "Panama"
},
"vessel_b": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"min_distance_m": 15.5,
"avg_distance_m": 34.7000000000000028421709430404007434844970703125,
"distance_consistency_m": 19.699999999999999289457264239899814128875732421875,
"duration_minutes": 342.3999999999999772626324556767940521240234375,
"overlap_duration_s": 20543,
"speed_a_avg": 0.66000000000000003108624468950438313186168670654296875,
"speed_a_std": 0.2200000000000000011102230246251565404236316680908203125,
"speed_b_avg": 0.689999999999999946709294817992486059665679931640625,
"speed_b_std": 0.2099999999999999922284388276239042170345783233642578125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.66000000000000003108624468950438313186168670654296875,
"max_sog": 1.600000000000000088817841970012523233890533447265625
},
"vessel_b": {
"avg_sog": 0.689999999999999946709294817992486059665679931640625,
"max_sog": 1.8000000000000000444089209850062616169452667236328125
}
},
"time_window": {
"start": "2026-09-13T17:03:03+00:00",
"end": "2026-09-13T22:45:26+00:00"
},
"points_count": {
"vessel_a": 85,
"vessel_b": 85
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 93,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 16m, avg 35m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 342 minutes"
},
"speed_stability": {
"score": 18,
"max": 20,
"detail": "both very slow; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b120m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (GAZ FRATERNITY and GAZ VICTORY) maintained close proximity (min 16m, avg 35m) for 342 minutes. Both vessels were slow-moving (avg speeds 0.7 and 0.7 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 34.41089430000000248810465564019978046417236328125,
"lon": 33.52304550000000205045580514706671237945556640625
},
"time_window": {
"start_ts": "2026-09-13T17:03:03+00:00",
"end_ts": "2026-09-13T22:45:26+00:00"
},
"searched_at": "2026-09-13T23:45:01.245558+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 34m
- Data Points: 115 AIS positions
- Period: 2026-09-13T17:50:45+00:00 to 2026-09-14T00:24:46+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 394,
"points_in_zone": 115,
"first_point": {
"ts": "2026-09-13T17:50:45+00:00",
"lat": 34.4232999999999975671016727574169635772705078125,
"lon": 33.503749999999996589394868351519107818603515625
},
"last_point": {
"ts": "2026-09-14T00:24:46+00:00",
"lat": 34.44184169999999767242115922272205352783203125,
"lon": 33.49839829999999807341737323440611362457275390625
}
}- Minimum Distance: 16 meters
- Average Distance: 34 meters
- Duration: 6h 22m
- Period: 2026-09-13T16:22:51+00:00 to 2026-09-13T22:45:26+00:00
- Vessel A Avg Speed: 0.7 knots
- Vessel B Avg Speed: 0.7 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (GAZ FRATERNITY and GAZ VICTORY) maintained close proximity (min 16m, avg 34m) for 383 minutes. Both vessels were slow-moving (avg speeds 0.7 and 0.7 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 16m, avg 34m |
| Duration | 25/25 | Duration 383 minutes |
| Speed Stability | 18/20 | both very slow; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±19m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 372668000,
"imo": 9448487,
"name": "GAZ FRATERNITY",
"flag": "Panama"
},
"vessel_b": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"min_distance_m": 15.5,
"avg_distance_m": 34.2999999999999971578290569595992565155029296875,
"distance_consistency_m": 18.800000000000000710542735760100185871124267578125,
"duration_minutes": 382.6000000000000227373675443232059478759765625,
"overlap_duration_s": 22955,
"speed_a_avg": 0.689999999999999946709294817992486059665679931640625,
"speed_a_std": 0.2300000000000000099920072216264088638126850128173828125,
"speed_b_avg": 0.729999999999999982236431605997495353221893310546875,
"speed_b_std": 0.2200000000000000011102230246251565404236316680908203125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.689999999999999946709294817992486059665679931640625,
"max_sog": 1.600000000000000088817841970012523233890533447265625
},
"vessel_b": {
"avg_sog": 0.729999999999999982236431605997495353221893310546875,
"max_sog": 1.8000000000000000444089209850062616169452667236328125
}
},
"time_window": {
"start": "2026-09-13T16:22:51+00:00",
"end": "2026-09-13T22:45:26+00:00"
},
"points_count": {
"vessel_a": 100,
"vessel_b": 100
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 93,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 16m, avg 34m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 383 minutes"
},
"speed_stability": {
"score": 18,
"max": 20,
"detail": "both very slow; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b119m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (GAZ FRATERNITY and GAZ VICTORY) maintained close proximity (min 16m, avg 34m) for 383 minutes. Both vessels were slow-moving (avg speeds 0.7 and 0.7 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 38m
- Data Points: 117 AIS positions
- Period: 2026-09-13T16:50:25+00:00 to 2026-09-13T23:29:05+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 398.69999999999998863131622783839702606201171875,
"points_in_zone": 117,
"first_point": {
"ts": "2026-09-13T16:50:25+00:00",
"lat": 34.4278800000000018144419300369918346405029296875,
"lon": 33.48491829999999680467226426117122173309326171875
},
"last_point": {
"ts": "2026-09-13T23:29:05+00:00",
"lat": 34.4087267000000025518602342344820499420166015625,
"lon": 33.51981669999999979836502461694180965423583984375
}
}- Minimum Distance: 12 meters
- Average Distance: 35 meters
- Duration: 6h 25m
- Period: 2026-09-13T15:35:51+00:00 to 2026-09-13T22:01:07+00:00
- Vessel A Avg Speed: 0.8 knots
- Vessel B Avg Speed: 0.8 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (GAZ FRATERNITY and GAZ VICTORY) maintained close proximity (min 12m, avg 35m) for 385 minutes. Both vessels were slow-moving (avg speeds 0.8 and 0.8 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 12m, avg 35m |
| Duration | 25/25 | Duration 385 minutes |
| Speed Stability | 18/20 | both very slow; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±19m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 372668000,
"imo": 9448487,
"name": "GAZ FRATERNITY",
"flag": "Panama"
},
"vessel_b": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"min_distance_m": 11.5,
"avg_distance_m": 34.7000000000000028421709430404007434844970703125,
"distance_consistency_m": 19.300000000000000710542735760100185871124267578125,
"duration_minutes": 385.30000000000001136868377216160297393798828125,
"overlap_duration_s": 23116,
"speed_a_avg": 0.75,
"speed_a_std": 0.2099999999999999922284388276239042170345783233642578125,
"speed_b_avg": 0.7800000000000000266453525910037569701671600341796875,
"speed_b_std": 0.179999999999999993338661852249060757458209991455078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.75,
"max_sog": 1.600000000000000088817841970012523233890533447265625
},
"vessel_b": {
"avg_sog": 0.7800000000000000266453525910037569701671600341796875,
"max_sog": 1.100000000000000088817841970012523233890533447265625
}
},
"time_window": {
"start": "2026-09-13T15:35:51+00:00",
"end": "2026-09-13T22:01:07+00:00"
},
"points_count": {
"vessel_a": 101,
"vessel_b": 101
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 93,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 12m, avg 35m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 385 minutes"
},
"speed_stability": {
"score": 18,
"max": 20,
"detail": "both very slow; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b119m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (GAZ FRATERNITY and GAZ VICTORY) maintained close proximity (min 12m, avg 35m) for 385 minutes. Both vessels were slow-moving (avg speeds 0.8 and 0.8 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 33m
- Data Points: 119 AIS positions
- Period: 2026-09-13T15:51:15+00:00 to 2026-09-13T22:24:35+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 393.30000000000001136868377216160297393798828125,
"points_in_zone": 119,
"first_point": {
"ts": "2026-09-13T15:51:15+00:00",
"lat": 34.43045330000000348036337527446448802947998046875,
"lon": 33.465703300000001263470039702951908111572265625
},
"last_point": {
"ts": "2026-09-13T22:24:35+00:00",
"lat": 34.39185830000000265727067016996443271636962890625,
"lon": 33.550763299999999844658304937183856964111328125
}
}- Minimum Distance: 1 meters
- Average Distance: 2 meters
- Duration: 30 minutes
- Period: 2026-09-13T14:57:25+00:00 to 2026-09-13T15:27:55+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Unknown Maritime Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (GAZ VICTORY and BAGHEERA) maintained close proximity (min 1m, avg 2m) for 30 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Unknown Maritime Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 1m, avg 2m |
| Duration | 5/25 | Duration 30 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±0m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Unknown Maritime Surveillance Zone |
🛰️ Satellite Corroboration
No satellite imagery for this time/location
No Sentinel-1 scenes covering AOI and time window
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 538010350,
"imo": 9670949,
"name": "BAGHEERA",
"flag": "MARSHALL ISLANDS"
},
"min_distance_m": 1.3000000000000000444089209850062616169452667236328125,
"avg_distance_m": 1.6999999999999999555910790149937383830547332763671875,
"distance_consistency_m": 0.299999999999999988897769753748434595763683319091796875,
"duration_minutes": 30.5,
"overlap_duration_s": 1830,
"speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-09-13T14:57:25+00:00",
"end": "2026-09-13T15:27:55+00:00"
},
"points_count": {
"vessel_a": 7,
"vessel_b": 7
},
"zone_id": "discovered_134",
"zone_name": "Unknown Maritime Surveillance Zone",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 1m, avg 2m"
},
"duration": {
"score": 5,
"max": 25,
"detail": "Duration 30 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b10m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Unknown Maritime Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (GAZ VICTORY and BAGHEERA) maintained close proximity (min 1m, avg 2m) for 30 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Unknown Maritime Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 31.717095400000001603757482371293008327484130859375,
"lon": 35.99936430000000342488419846631586551666259765625
},
"time_window": {
"start_ts": "2026-09-13T14:57:25+00:00",
"end_ts": "2026-09-13T15:27:55+00:00"
},
"searched_at": "2026-09-13T16:00:01.761795+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 2 meters
- Average Distance: 8 meters
- Duration: 33 minutes
- Period: 2026-09-13T14:55:51+00:00 to 2026-09-13T15:28:50+00:00
- Vessel A Avg Speed: 0.1 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Unknown Maritime Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (YANBU and GAZ VICTORY) maintained close proximity (min 2m, avg 8m) for 33 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Unknown Maritime Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 2m, avg 8m |
| Duration | 5/25 | Duration 33 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±10m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Unknown Maritime Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 636023504,
"imo": 9376816,
"name": "YANBU",
"flag": "Liberia"
},
"vessel_b": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"min_distance_m": 2.100000000000000088817841970012523233890533447265625,
"avg_distance_m": 7.70000000000000017763568394002504646778106689453125,
"distance_consistency_m": 10,
"duration_minutes": 33,
"overlap_duration_s": 1979,
"speed_a_avg": 0.1000000000000000055511151231257827021181583404541015625,
"speed_a_std": 0.190000000000000002220446049250313080847263336181640625,
"speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
"speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.1000000000000000055511151231257827021181583404541015625,
"max_sog": 0.59999999999999997779553950749686919152736663818359375
},
"vessel_b": {
"avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-09-13T14:55:51+00:00",
"end": "2026-09-13T15:28:50+00:00"
},
"points_count": {
"vessel_a": 10,
"vessel_b": 10
},
"zone_id": "discovered_134",
"zone_name": "Unknown Maritime Surveillance Zone",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 2m, avg 8m"
},
"duration": {
"score": 5,
"max": 25,
"detail": "Duration 33 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b110m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Unknown Maritime Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (YANBU and GAZ VICTORY) maintained close proximity (min 2m, avg 8m) for 33 minutes. Both vessels were slow-moving (avg speeds 0.1 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Unknown Maritime Surveillance Zone, a known STS activity area."
}
}- Minimum Distance: 0 meters
- Average Distance: 6 meters
- Duration: 30 minutes
- Period: 2026-09-13T14:57:25+00:00 to 2026-09-13T15:27:55+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.2 knots
- Zone: Unknown Maritime Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (GAZ VICTORY and NAVIG8 EXPRESS) maintained close proximity (min 0m, avg 6m) for 30 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Unknown Maritime Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 0m, avg 6m |
| Duration | 5/25 | Duration 30 minutes |
| Speed Stability | 17/20 | both nearly stationary; stable speeds |
| Distance Consistency | 15/15 | Distance variance ±6m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Unknown Maritime Surveillance Zone |
🛰️ Satellite Corroboration
No satellite imagery for this time/location
No Sentinel-1 scenes covering AOI and time window
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 563261400,
"imo": 9976874,
"name": "NAVIG8 EXPRESS",
"flag": "Singapore"
},
"min_distance_m": 0.40000000000000002220446049250313080847263336181640625,
"avg_distance_m": 6.20000000000000017763568394002504646778106689453125,
"distance_consistency_m": 6.4000000000000003552713678800500929355621337890625,
"duration_minutes": 30.5,
"overlap_duration_s": 1830,
"speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0.2399999999999999911182158029987476766109466552734375,
"speed_b_std": 0.38000000000000000444089209850062616169452667236328125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0.2399999999999999911182158029987476766109466552734375,
"max_sog": 0.8000000000000000444089209850062616169452667236328125
}
},
"time_window": {
"start": "2026-09-13T14:57:25+00:00",
"end": "2026-09-13T15:27:55+00:00"
},
"points_count": {
"vessel_a": 7,
"vessel_b": 7
},
"zone_id": "discovered_134",
"zone_name": "Unknown Maritime Surveillance Zone",
"score": {
"value": 72,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 0m, avg 6m"
},
"duration": {
"score": 5,
"max": 25,
"detail": "Duration 30 minutes"
},
"speed_stability": {
"score": 17,
"max": 20,
"detail": "both nearly stationary; stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b16m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Unknown Maritime Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (GAZ VICTORY and NAVIG8 EXPRESS) maintained close proximity (min 0m, avg 6m) for 30 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.2 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Unknown Maritime Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 31.717081900000000160844138008542358875274658203125,
"lon": 35.9993733000000020183506421744823455810546875
},
"time_window": {
"start_ts": "2026-09-13T14:57:25+00:00",
"end_ts": "2026-09-13T15:27:55+00:00"
},
"searched_at": "2026-09-13T16:30:01.305782+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 1 meters
- Average Distance: 148 meters
- Duration: 32 minutes
- Period: 2026-09-13T14:55:13+00:00 to 2026-09-13T15:27:55+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.1 knots
- Zone: Unknown Maritime Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (GAZ VICTORY and KASTOS I) maintained close proximity (min 1m, avg 148m) for 33 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). Event occurred in Unknown Maritime Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 1m, avg 148m |
| Duration | 5/25 | Duration 33 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 5/15 | Distance variance ±130m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Unknown Maritime Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 352004029,
"imo": 9282297,
"name": "KASTOS I",
"flag": "Panama"
},
"min_distance_m": 1.1999999999999999555910790149937383830547332763671875,
"avg_distance_m": 148.400000000000005684341886080801486968994140625,
"distance_consistency_m": 129.5,
"duration_minutes": 32.7000000000000028421709430404007434844970703125,
"overlap_duration_s": 1962,
"speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0.14000000000000001332267629550187848508358001708984375,
"speed_b_std": 0.190000000000000002220446049250313080847263336181640625,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0.14000000000000001332267629550187848508358001708984375,
"max_sog": 0.59999999999999997779553950749686919152736663818359375
}
},
"time_window": {
"start": "2026-09-13T14:55:13+00:00",
"end": "2026-09-13T15:27:55+00:00"
},
"points_count": {
"vessel_a": 8,
"vessel_b": 8
},
"zone_id": "discovered_134",
"zone_name": "Unknown Maritime Surveillance Zone",
"score": {
"value": 65,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 1m, avg 148m"
},
"duration": {
"score": 5,
"max": 25,
"detail": "Duration 33 minutes"
},
"speed_stability": {
"score": 20,
"max": 20,
"detail": "both nearly stationary; very stable speeds"
},
"distance_consistency": {
"score": 5,
"max": 15,
"detail": "Distance variance \u00b1130m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Unknown Maritime Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (GAZ VICTORY and KASTOS I) maintained close proximity (min 1m, avg 148m) for 33 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.1 knots). Event occurred in Unknown Maritime Surveillance Zone, a known STS activity area."
}
}- Minimum Distance: 0 meters
- Average Distance: 2 meters
- Duration: 37 minutes
- Period: 2026-09-13T14:51:03+00:00 to 2026-09-13T15:28:53+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Unknown Maritime Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (THALIA and GAZ VICTORY) maintained close proximity (min 0m, avg 2m) for 38 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 Unknown Maritime Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 0m, avg 2m |
| Duration | 5/25 | Duration 38 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±1m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Unknown Maritime Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 636015372,
"imo": 9611541,
"name": "THALIA",
"flag": "Liberia"
},
"vessel_b": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"min_distance_m": 0.40000000000000002220446049250313080847263336181640625,
"avg_distance_m": 2,
"distance_consistency_m": 1.100000000000000088817841970012523233890533447265625,
"duration_minutes": 37.7999999999999971578290569595992565155029296875,
"overlap_duration_s": 2270,
"speed_a_avg": 0,
"speed_a_std": 0,
"speed_b_avg": 0.0200000000000000004163336342344337026588618755340576171875,
"speed_b_std": 0.040000000000000000832667268468867405317723751068115234375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0,
"max_sog": 0
},
"vessel_b": {
"avg_sog": 0.0200000000000000004163336342344337026588618755340576171875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
}
},
"time_window": {
"start": "2026-09-13T14:51:03+00:00",
"end": "2026-09-13T15:28:53+00:00"
},
"points_count": {
"vessel_a": 13,
"vessel_b": 13
},
"zone_id": "discovered_134",
"zone_name": "Unknown Maritime Surveillance Zone",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 0m, avg 2m"
},
"duration": {
"score": 5,
"max": 25,
"detail": "Duration 38 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: Unknown Maritime Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (THALIA and GAZ VICTORY) maintained close proximity (min 0m, avg 2m) for 38 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 Unknown Maritime Surveillance Zone, a known STS activity area."
}
}- Minimum Distance: 2 meters
- Average Distance: 3 meters
- Duration: 32 minutes
- Period: 2026-09-13T14:55:13+00:00 to 2026-09-13T15:27:55+00:00
- Vessel A Avg Speed: 0.0 knots
- Vessel B Avg Speed: 0.0 knots
- Zone: Unknown Maritime Surveillance Zone
Confidence Analysis
Moderate-confidence STS candidate. Two tankers (GAZ VICTORY and ALFA SEA) maintained close proximity (min 2m, avg 3m) for 33 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Unknown Maritime Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 2m, avg 3m |
| Duration | 5/25 | Duration 33 minutes |
| Speed Stability | 20/20 | both nearly stationary; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±2m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Unknown Maritime Surveillance Zone |
🛰️ Satellite Corroboration
No satellite imagery for this time/location
No Sentinel-1 scenes covering AOI and time window
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"vessel_b": {
"mmsi": 353657000,
"imo": 9517288,
"name": "ALFA SEA",
"flag": "Panama"
},
"min_distance_m": 1.600000000000000088817841970012523233890533447265625,
"avg_distance_m": 3.20000000000000017763568394002504646778106689453125,
"distance_consistency_m": 1.5,
"duration_minutes": 32.7000000000000028421709430404007434844970703125,
"overlap_duration_s": 1962,
"speed_a_avg": 0.0299999999999999988897769753748434595763683319091796875,
"speed_a_std": 0.05000000000000000277555756156289135105907917022705078125,
"speed_b_avg": 0,
"speed_b_std": 0,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.0299999999999999988897769753748434595763683319091796875,
"max_sog": 0.1000000000000000055511151231257827021181583404541015625
},
"vessel_b": {
"avg_sog": 0,
"max_sog": 0
}
},
"time_window": {
"start": "2026-09-13T14:55:13+00:00",
"end": "2026-09-13T15:27:55+00:00"
},
"points_count": {
"vessel_a": 8,
"vessel_b": 8
},
"zone_id": "discovered_134",
"zone_name": "Unknown Maritime Surveillance Zone",
"score": {
"value": 75,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 2m, avg 3m"
},
"duration": {
"score": 5,
"max": 25,
"detail": "Duration 33 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: Unknown Maritime Surveillance Zone"
}
},
"summary": "Moderate-confidence STS candidate. Two tankers (GAZ VICTORY and ALFA SEA) maintained close proximity (min 2m, avg 3m) for 33 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Unknown Maritime Surveillance Zone, a known STS activity area."
},
"sar": {
"status": "not_found",
"centroid": {
"lat": 31.71709630000000146310412674210965633392333984375,
"lon": 35.99936799999999692545316065661609172821044921875
},
"time_window": {
"start_ts": "2026-09-13T14:55:13+00:00",
"end_ts": "2026-09-13T15:27:55+00:00"
},
"searched_at": "2026-09-13T16:15:11.423463+00:00",
"notes": "No Sentinel-1 scenes covering AOI and time window"
}
}- Minimum Distance: 12 meters
- Average Distance: 35 meters
- Duration: 6h 29m
- Period: 2026-09-13T14:44:01+00:00 to 2026-09-13T21:13:06+00:00
- Vessel A Avg Speed: 0.8 knots
- Vessel B Avg Speed: 0.8 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (GAZ FRATERNITY and GAZ VICTORY) maintained close proximity (min 12m, avg 34m) for 389 minutes. Both vessels were slow-moving (avg speeds 0.8 and 0.8 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 12m, avg 34m |
| Duration | 25/25 | Duration 389 minutes |
| Speed Stability | 18/20 | both very slow; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±19m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 372668000,
"imo": 9448487,
"name": "GAZ FRATERNITY",
"flag": "Panama"
},
"vessel_b": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"min_distance_m": 11.5,
"avg_distance_m": 34.5,
"distance_consistency_m": 19.300000000000000710542735760100185871124267578125,
"duration_minutes": 389.1000000000000227373675443232059478759765625,
"overlap_duration_s": 23345,
"speed_a_avg": 0.7600000000000000088817841970012523233890533447265625,
"speed_a_std": 0.200000000000000011102230246251565404236316680908203125,
"speed_b_avg": 0.79000000000000003552713678800500929355621337890625,
"speed_b_std": 0.1700000000000000122124532708767219446599483489990234375,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.7600000000000000088817841970012523233890533447265625,
"max_sog": 1.600000000000000088817841970012523233890533447265625
},
"vessel_b": {
"avg_sog": 0.79000000000000003552713678800500929355621337890625,
"max_sog": 1.100000000000000088817841970012523233890533447265625
}
},
"time_window": {
"start": "2026-09-13T14:44:01+00:00",
"end": "2026-09-13T21:13:06+00:00"
},
"points_count": {
"vessel_a": 98,
"vessel_b": 98
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 93,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 12m, avg 34m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 389 minutes"
},
"speed_stability": {
"score": 18,
"max": 20,
"detail": "both very slow; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b119m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (GAZ FRATERNITY and GAZ VICTORY) maintained close proximity (min 12m, avg 34m) for 389 minutes. Both vessels were slow-moving (avg speeds 0.8 and 0.8 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Minimum Distance: 6 meters
- Average Distance: 35 meters
- Duration: 6h 29m
- Period: 2026-09-13T13:53:22+00:00 to 2026-09-13T20:23:05+00:00
- Vessel A Avg Speed: 0.7 knots
- Vessel B Avg Speed: 0.8 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (GAZ FRATERNITY and GAZ VICTORY) maintained close proximity (min 6m, avg 35m) for 390 minutes. Both vessels were slow-moving (avg speeds 0.7 and 0.8 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 6m, avg 35m |
| Duration | 25/25 | Duration 390 minutes |
| Speed Stability | 18/20 | both very slow; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±20m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 372668000,
"imo": 9448487,
"name": "GAZ FRATERNITY",
"flag": "Panama"
},
"vessel_b": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"min_distance_m": 5.79999999999999982236431605997495353221893310546875,
"avg_distance_m": 34.60000000000000142108547152020037174224853515625,
"distance_consistency_m": 19.89999999999999857891452847979962825775146484375,
"duration_minutes": 389.69999999999998863131622783839702606201171875,
"overlap_duration_s": 23383,
"speed_a_avg": 0.729999999999999982236431605997495353221893310546875,
"speed_a_std": 0.2099999999999999922284388276239042170345783233642578125,
"speed_b_avg": 0.770000000000000017763568394002504646778106689453125,
"speed_b_std": 0.179999999999999993338661852249060757458209991455078125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.729999999999999982236431605997495353221893310546875,
"max_sog": 1.600000000000000088817841970012523233890533447265625
},
"vessel_b": {
"avg_sog": 0.770000000000000017763568394002504646778106689453125,
"max_sog": 1.100000000000000088817841970012523233890533447265625
}
},
"time_window": {
"start": "2026-09-13T13:53:22+00:00",
"end": "2026-09-13T20:23:05+00:00"
},
"points_count": {
"vessel_a": 107,
"vessel_b": 107
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 93,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 6m, avg 35m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 390 minutes"
},
"speed_stability": {
"score": 18,
"max": 20,
"detail": "both very slow; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b120m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (GAZ FRATERNITY and GAZ VICTORY) maintained close proximity (min 6m, avg 35m) for 390 minutes. Both vessels were slow-moving (avg speeds 0.7 and 0.8 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 1h 46m
- Data Points: 32 AIS positions
- Period: 2026-09-13T13:00:36+00:00 to 2026-09-13T14:46:55+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 106.2999999999999971578290569595992565155029296875,
"points_in_zone": 32,
"first_point": {
"ts": "2026-09-13T13:00:36+00:00",
"lat": 34.42875670000000098980308393947780132293701171875,
"lon": 33.4313532999999978301275405101478099822998046875
},
"last_point": {
"ts": "2026-09-13T14:46:55+00:00",
"lat": 34.43076169999999791571099194698035717010498046875,
"lon": 33.44868000000000307636582874692976474761962890625
}
}- Duration: 1h 46m
- Radius: 902 meters
- Data Points: 32 AIS positions
- Centroid: 34.4295, 33.4390
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 901.8999999999999772626324556767940521240234375,
"duration_minutes": 106.2999999999999971578290569595992565155029296875,
"points": 32,
"centroid": {
"lat": 34.42953552187498900138962198980152606964111328125,
"lon": 33.43898005937500528261807630769908428192138671875
},
"bbox": {
"min_lat": 34.42875670000000098980308393947780132293701171875,
"min_lon": 33.4313532999999978301275405101478099822998046875,
"max_lat": 34.43076169999999791571099194698035717010498046875,
"max_lon": 33.44868000000000307636582874692976474761962890625
},
"zone_id": "discovered_039"
}- Minimum Distance: 6 meters
- Average Distance: 34 meters
- Duration: 6h 34m
- Period: 2026-09-13T12:42:12+00:00 to 2026-09-13T19:16:56+00:00
- Vessel A Avg Speed: 0.7 knots
- Vessel B Avg Speed: 0.7 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (GAZ FRATERNITY and GAZ VICTORY) maintained close proximity (min 6m, avg 34m) for 395 minutes. Both vessels were slow-moving (avg speeds 0.7 and 0.7 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 6m, avg 34m |
| Duration | 25/25 | Duration 395 minutes |
| Speed Stability | 18/20 | both very slow; very stable speeds |
| Distance Consistency | 15/15 | Distance variance ±20m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 372668000,
"imo": 9448487,
"name": "GAZ FRATERNITY",
"flag": "Panama"
},
"vessel_b": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"min_distance_m": 5.79999999999999982236431605997495353221893310546875,
"avg_distance_m": 34,
"distance_consistency_m": 19.5,
"duration_minutes": 394.69999999999998863131622783839702606201171875,
"overlap_duration_s": 23684,
"speed_a_avg": 0.68000000000000004884981308350688777863979339599609375,
"speed_a_std": 0.270000000000000017763568394002504646778106689453125,
"speed_b_avg": 0.7199999999999999733546474089962430298328399658203125,
"speed_b_std": 0.2300000000000000099920072216264088638126850128173828125,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.68000000000000004884981308350688777863979339599609375,
"max_sog": 1.600000000000000088817841970012523233890533447265625
},
"vessel_b": {
"avg_sog": 0.7199999999999999733546474089962430298328399658203125,
"max_sog": 1.100000000000000088817841970012523233890533447265625
}
},
"time_window": {
"start": "2026-09-13T12:42:12+00:00",
"end": "2026-09-13T19:16:56+00:00"
},
"points_count": {
"vessel_a": 111,
"vessel_b": 111
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 93,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 6m, avg 34m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 395 minutes"
},
"speed_stability": {
"score": 18,
"max": 20,
"detail": "both very slow; very stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b120m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (GAZ FRATERNITY and GAZ VICTORY) maintained close proximity (min 6m, avg 34m) for 395 minutes. Both vessels were slow-moving (avg speeds 0.7 and 0.7 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 2h 44m
- Data Points: 51 AIS positions
- Period: 2026-09-13T12:02:14+00:00 to 2026-09-13T14:46:55+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 164.69999999999998863131622783839702606201171875,
"points_in_zone": 51,
"first_point": {
"ts": "2026-09-13T12:02:14+00:00",
"lat": 34.42806829999999962410583975724875926971435546875,
"lon": 33.4263116999999994050085661001503467559814453125
},
"last_point": {
"ts": "2026-09-13T14:46:55+00:00",
"lat": 34.43076169999999791571099194698035717010498046875,
"lon": 33.44868000000000307636582874692976474761962890625
}
}- Duration: 2h 25m
- Radius: 1,164 meters
- Data Points: 45 AIS positions
- Centroid: 34.4293, 33.4361
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 1164.200000000000045474735088646411895751953125,
"duration_minutes": 145.19999999999998863131622783839702606201171875,
"points": 45,
"centroid": {
"lat": 34.4292552200000017137426766566932201385498046875,
"lon": 33.4361448222222179538221098482608795166015625
},
"bbox": {
"min_lat": 34.42830330000000316204022965393960475921630859375,
"min_lon": 33.42754330000000351219568983651697635650634765625,
"max_lat": 34.43076169999999791571099194698035717010498046875,
"max_lon": 33.44868000000000307636582874692976474761962890625
},
"zone_id": "discovered_039"
}- Minimum Distance: 6 meters
- Average Distance: 33 meters
- Duration: 6h 34m
- Period: 2026-09-13T11:52:41+00:00 to 2026-09-13T18:27:35+00:00
- Vessel A Avg Speed: 0.6 knots
- Vessel B Avg Speed: 0.7 knots
- Zone: Northern Baltic Sea Surveillance Zone
Confidence Analysis
High-confidence STS candidate. Two tankers (GAZ FRATERNITY and GAZ VICTORY) maintained close proximity (min 6m, avg 33m) for 395 minutes. Both vessels were slow-moving (avg speeds 0.6 and 0.7 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area.
View scoring breakdown
| Factor | Score | Detail |
|---|---|---|
| Distance Tightness | 25/25 | Min distance 6m, avg 33m |
| Duration | 25/25 | Duration 395 minutes |
| Speed Stability | 15/20 | both very slow; stable speeds |
| Distance Consistency | 15/15 | Distance variance ±20m |
| Isolation | 5/10 | Isolation data not available |
| Context | 5/5 | In monitored zone: Northern Baltic Sea Surveillance Zone |
Show Raw Evidence JSON
{
"vessel_a": {
"mmsi": 372668000,
"imo": 9448487,
"name": "GAZ FRATERNITY",
"flag": "Panama"
},
"vessel_b": {
"mmsi": 355213000,
"imo": 9458171,
"name": "GAZ VICTORY",
"flag": "PANAMA"
},
"min_distance_m": 5.79999999999999982236431605997495353221893310546875,
"avg_distance_m": 33.39999999999999857891452847979962825775146484375,
"distance_consistency_m": 20.10000000000000142108547152020037174224853515625,
"duration_minutes": 394.8999999999999772626324556767940521240234375,
"overlap_duration_s": 23694,
"speed_a_avg": 0.59999999999999997779553950749686919152736663818359375,
"speed_a_std": 0.309999999999999997779553950749686919152736663818359375,
"speed_b_avg": 0.65000000000000002220446049250313080847263336181640625,
"speed_b_std": 0.299999999999999988897769753748434595763683319091796875,
"speed_summary": {
"vessel_a": {
"avg_sog": 0.59999999999999997779553950749686919152736663818359375,
"max_sog": 1
},
"vessel_b": {
"avg_sog": 0.65000000000000002220446049250313080847263336181640625,
"max_sog": 1.100000000000000088817841970012523233890533447265625
}
},
"time_window": {
"start": "2026-09-13T11:52:41+00:00",
"end": "2026-09-13T18:27:35+00:00"
},
"points_count": {
"vessel_a": 106,
"vessel_b": 106
},
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"score": {
"value": 90,
"components": {
"distance_tightness": {
"score": 25,
"max": 25,
"detail": "Min distance 6m, avg 33m"
},
"duration": {
"score": 25,
"max": 25,
"detail": "Duration 395 minutes"
},
"speed_stability": {
"score": 15,
"max": 20,
"detail": "both very slow; stable speeds"
},
"distance_consistency": {
"score": 15,
"max": 15,
"detail": "Distance variance \u00b120m"
},
"isolation": {
"score": 5,
"max": 10,
"detail": "Isolation data not available"
},
"context": {
"score": 5,
"max": 5,
"detail": "In monitored zone: Northern Baltic Sea Surveillance Zone"
}
},
"summary": "High-confidence STS candidate. Two tankers (GAZ FRATERNITY and GAZ VICTORY) maintained close proximity (min 6m, avg 33m) for 395 minutes. Both vessels were slow-moving (avg speeds 0.6 and 0.7 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Northern Baltic Sea Surveillance Zone, a known STS activity area."
}
}- Duration: 2h 43m
- Radius: 1,131 meters
- Data Points: 51 AIS positions
- Centroid: 34.4290, 33.4338
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 1130.5,
"duration_minutes": 163.5,
"points": 51,
"centroid": {
"lat": 34.42896427843138695834568352438509464263916015625,
"lon": 33.433751054901932775464956648647785186767578125
},
"bbox": {
"min_lat": 34.427968300000003409877535887062549591064453125,
"min_lon": 33.42590500000000020008883439004421234130859375,
"max_lat": 34.4303766999999965037204674445092678070068359375,
"max_lon": 33.4459317000000027064743335358798503875732421875
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 3h 44m
- Data Points: 69 AIS positions
- Period: 2026-09-13T11:02:15+00:00 to 2026-09-13T14:46:55+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 224.69999999999998863131622783839702606201171875,
"points_in_zone": 69,
"first_point": {
"ts": "2026-09-13T11:02:15+00:00",
"lat": 34.4349433000000004767571226693689823150634765625,
"lon": 33.4227750000000014551915228366851806640625
},
"last_point": {
"ts": "2026-09-13T14:46:55+00:00",
"lat": 34.43076169999999791571099194698035717010498046875,
"lon": 33.44868000000000307636582874692976474761962890625
}
}- Duration: 3h 21m
- Radius: 2,428 meters
- Data Points: 65 AIS positions
- Centroid: 34.4296, 33.4291
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 2427.59999999999990905052982270717620849609375,
"duration_minutes": 201.099999999999994315658113919198513031005859375,
"points": 65,
"centroid": {
"lat": 34.42961140461537894452703767456114292144775390625,
"lon": 33.429128696923072538993437774479389190673828125
},
"bbox": {
"min_lat": 34.427965000000000372892827726900577545166015625,
"min_lon": 33.404449999999997089616954326629638671875,
"max_lat": 34.4374083000000013043973012827336788177490234375,
"max_lon": 33.44158999999999792862581671215593814849853515625
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 4h 44m
- Data Points: 86 AIS positions
- Period: 2026-09-13T10:02:55+00:00 to 2026-09-13T14:46:55+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 284,
"points_in_zone": 86,
"first_point": {
"ts": "2026-09-13T10:02:55+00:00",
"lat": 34.4381867000000028156136977486312389373779296875,
"lon": 33.35017669999999867513906792737543582916259765625
},
"last_point": {
"ts": "2026-09-13T14:46:55+00:00",
"lat": 34.43076169999999791571099194698035717010498046875,
"lon": 33.44868000000000307636582874692976474761962890625
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 5h 44m
- Data Points: 101 AIS positions
- Period: 2026-09-13T09:02:15+00:00 to 2026-09-13T14:46:55+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 344.69999999999998863131622783839702606201171875,
"points_in_zone": 101,
"first_point": {
"ts": "2026-09-13T09:02:15+00:00",
"lat": 34.4181267000000019606886780820786952972412109375,
"lon": 33.3818916999999970585122355259954929351806640625
},
"last_point": {
"ts": "2026-09-13T14:46:55+00:00",
"lat": 34.43076169999999791571099194698035717010498046875,
"lon": 33.44868000000000307636582874692976474761962890625
}
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 36m
- Data Points: 117 AIS positions
- Period: 2026-09-13T08:10:55+00:00 to 2026-09-13T14:46:55+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 396,
"points_in_zone": 117,
"first_point": {
"ts": "2026-09-13T08:10:55+00:00",
"lat": 34.41787169999999917990862741135060787200927734375,
"lon": 33.38953169999999914807631284929811954498291015625
},
"last_point": {
"ts": "2026-09-13T14:46:55+00:00",
"lat": 34.43076169999999791571099194698035717010498046875,
"lon": 33.44868000000000307636582874692976474761962890625
}
}- Duration: 1h 36m
- Radius: 550 meters
- Data Points: 28 AIS positions
- Centroid: 34.4182, 33.3841
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 550.200000000000045474735088646411895751953125,
"duration_minutes": 96.400000000000005684341886080801486968994140625,
"points": 28,
"centroid": {
"lat": 34.4182387535714298110178788192570209503173828125,
"lon": 33.3840894035714228493816335685551166534423828125
},
"bbox": {
"min_lat": 34.41739170000000314075805363245308399200439453125,
"min_lon": 33.3806000000000011596057447604835033416748046875,
"max_lat": 34.4209383000000030961018637754023075103759765625,
"max_lon": 33.39006830000000292102413368411362171173095703125
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 35m
- Data Points: 115 AIS positions
- Period: 2026-09-13T07:51:26+00:00 to 2026-09-13T14:26:44+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 395.30000000000001136868377216160297393798828125,
"points_in_zone": 115,
"first_point": {
"ts": "2026-09-13T07:51:26+00:00",
"lat": 34.4189982999999983803718350827693939208984375,
"lon": 33.392470000000002983142621815204620361328125
},
"last_point": {
"ts": "2026-09-13T14:26:44+00:00",
"lat": 34.430166700000000901127350516617298126220703125,
"lon": 33.4443849999999969213604344986379146575927734375
}
}- Duration: 2h 41m
- Radius: 855 meters
- Data Points: 46 AIS positions
- Centroid: 34.4192, 33.3882
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 854.6000000000000227373675443232059478759765625,
"duration_minutes": 161.099999999999994315658113919198513031005859375,
"points": 46,
"centroid": {
"lat": 34.41920547173913291771896183490753173828125,
"lon": 33.38820981956521194433662458322942256927490234375
},
"bbox": {
"min_lat": 34.41739170000000314075805363245308399200439453125,
"min_lon": 33.3806000000000011596057447604835033416748046875,
"max_lat": 34.42251830000000012432792573235929012298583984375,
"max_lon": 33.39660330000000243444446823559701442718505859375
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 34m
- Data Points: 116 AIS positions
- Period: 2026-09-13T06:54:14+00:00 to 2026-09-13T13:28:14+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 394,
"points_in_zone": 116,
"first_point": {
"ts": "2026-09-13T06:54:14+00:00",
"lat": 34.4228499999999968395059113390743732452392578125,
"lon": 33.397158300000000963336788117885589599609375
},
"last_point": {
"ts": "2026-09-13T13:28:14+00:00",
"lat": 34.42908829999999653637132723815739154815673828125,
"lon": 33.43487830000000116115188575349748134613037109375
}
}- Duration: 3h 42m
- Radius: 916 meters
- Data Points: 61 AIS positions
- Centroid: 34.4200, 33.3906
- Zone: Northern Baltic Sea Surveillance Zone
Show Raw Evidence JSON
{
"radius_m": 916.3999999999999772626324556767940521240234375,
"duration_minutes": 222.099999999999994315658113919198513031005859375,
"points": 61,
"centroid": {
"lat": 34.41997456065573857131312252022325992584228515625,
"lon": 33.39055352459015324484425946138799190521240234375
},
"bbox": {
"min_lat": 34.41739170000000314075805363245308399200439453125,
"min_lon": 33.3806000000000011596057447604835033416748046875,
"max_lat": 34.42297330000000243899194174446165561676025390625,
"max_lon": 33.39821500000000042973624658770859241485595703125
},
"zone_id": "discovered_039"
}- Zone: Northern Baltic Sea Surveillance Zone
- Duration: 6h 37m
- Data Points: 113 AIS positions
- Period: 2026-09-13T05:52:54+00:00 to 2026-09-13T12:29:55+00:00
Show Raw Evidence JSON
{
"zone_id": "discovered_039",
"zone_name": "Northern Baltic Sea Surveillance Zone",
"dwell_minutes": 397,
"points_in_zone": 113,
"first_point": {
"ts": "2026-09-13T05:52:54+00:00",
"lat": 34.4206999999999965211827657185494899749755859375,
"lon": 33.3981849999999980127540766261518001556396484375
},
"last_point": {
"ts": "2026-09-13T12:29:55+00:00",
"lat": 34.42843330000000179325070348568260669708251953125,
"lon": 33.42826000000000163936419994570314884185791015625
}
}Recent Position Data
| Time (UTC) | Lat | Lon | Speed | Course | Zone |
|---|---|---|---|---|---|
| Sep 15 07:16 | 34.2492 | 34.0226 | 13.7 kn | 113.0° | Northern Baltic Sea Surveillance Zone |
| Sep 15 06:59 | 34.2745 | 33.9501 | 13.7 kn | 112.3° | Northern Baltic Sea Surveillance Zone |
| Sep 15 06:56 | 34.2793 | 33.9358 | 13.7 kn | 112.2° | Northern Baltic Sea Surveillance Zone |
| Sep 15 06:55 | 34.2808 | 33.9316 | 13.7 kn | 112.1° | Northern Baltic Sea Surveillance Zone |
| Sep 15 06:49 | 34.2888 | 33.9075 | 13.6 kn | 111.3° | Northern Baltic Sea Surveillance Zone |
| Sep 15 05:18 | 34.4238 | 33.5475 | 10.2 kn | 125.1° | Northern Baltic Sea Surveillance Zone |
| Sep 15 05:06 | 34.4319 | 33.5295 | 2.7 kn | 26.9° | Northern Baltic Sea Surveillance Zone |
| Sep 15 04:42 | 34.4298 | 33.5290 | 0.1 kn | 16.9° | Northern Baltic Sea Surveillance Zone |
| Sep 15 04:37 | 34.4296 | 33.5289 | 0.1 kn | 16.9° | Northern Baltic Sea Surveillance Zone |
| Sep 15 04:33 | 34.4295 | 33.5289 | 0.1 kn | 16.9° | Northern Baltic Sea Surveillance Zone |
| Sep 15 04:30 | 34.4294 | 33.5288 | 0.1 kn | 16.9° | Northern Baltic Sea Surveillance Zone |
| Sep 15 04:19 | 34.4290 | 33.5287 | 0.1 kn | 16.9° | Northern Baltic Sea Surveillance Zone |
| Sep 15 04:17 | 34.4289 | 33.5286 | 0.1 kn | 16.9° | Northern Baltic Sea Surveillance Zone |
| Sep 15 04:02 | 34.4284 | 33.5283 | 0.1 kn | 13.2° | Northern Baltic Sea Surveillance Zone |
| Sep 15 03:59 | 34.4283 | 33.5283 | 0.1 kn | 15.7° | Northern Baltic Sea Surveillance Zone |
| Sep 15 03:56 | 34.4282 | 33.5282 | 0.1 kn | 160.5° | Northern Baltic Sea Surveillance Zone |
| Sep 15 03:53 | 34.4280 | 33.5281 | 0.1 kn | 160.5° | Northern Baltic Sea Surveillance Zone |
| Sep 15 03:51 | 34.4280 | 33.5280 | 0.1 kn | 160.5° | Northern Baltic Sea Surveillance Zone |
| Sep 15 03:48 | 34.4279 | 33.5279 | 0.1 kn | 160.5° | Northern Baltic Sea Surveillance Zone |
| Sep 15 03:43 | 34.4278 | 33.5278 | 0.1 kn | 160.5° | Northern Baltic Sea Surveillance Zone |
Showing 20 of 100 recent positions.
Data Source
Vessel observed through FleetLeaks' AIS monitoring system in zones of interest. Identity and position data derived from AIS broadcasts and public maritime databases.
Disclaimer: AIS data can be spoofed or falsified. Vessel identities should be independently verified before making compliance decisions.
