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When a shadow fleet tanker goes dark, our agents don’t stop looking.

Joined October 2022
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Sweden's coast guard boarded the sanctioned tanker SEA OWL I this week off Trelleborg, citing threats to safety and the environment. Tracked AIS shows it hasn't moved in over 24 hours. Designated by Canada, Switzerland, the EU and the UK, broadcasting a Comorian flag.
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Aframax tankers leaving the Russian Baltic have one way out: the Danish Straits, too big for the Kiel Canal. Four sanctioned ones moved through it today, three in the Skagerrak/Kattegat approaches, one inside the Great Belt. Each is designated by four or five jurisdictions.
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Three sanctioned tankers, BRATSK, VIKTOR TITOV and CLEAN OCEAN, reached the Barents Sea approaches to Russia's Arctic oil gateway this week, 150 to 195 km north of Murmansk. BRATSK and VIKTOR TITOV are each designated by six jurisdictions, CLEAN OCEAN by two.
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This morning, 19 sanctioned vessels sat at anchor in one stretch of the Gulf of Finland, off Russia's Ust-Luga and Primorsk oil terminals. Every one is under Western sanctions.
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Of these 19, sixteen carry UK sanctions and fifteen carry EU sanctions. Only four are sanctioned by the United States. The US list has lagged its allies on the shadow fleet all year.
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Three sanctioned tankers ran the same route into northern Europe this week. Each flies Panama on paper but broadcasts a Russian identity at sea, and each answers to more than one name. The UK, EU, Canada and Switzerland have all sanctioned them.
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One of them broadcasts Vulkan today but has sailed under at least six names. The UK sanctioned it as Suleyman I; its register now reads Diva I. Names and flags change to shake off sanctions. The IMO number does not, which is how we still track it.
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A sanctioned tanker from Russia's state shipping line just ran from Suez to the English Channel. Our AIS tracked Spartan up through the Suez Canal on 3 September, the length of the Mediterranean, out through Gibraltar and up the Atlantic into the Channel by the 15th.
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Spartan, sanctioned as SCF Samotlor, is a crude oil tanker in Sovcomflot's fleet, Russia's state shipping company. It is sanctioned by the EU, UK, Canada, Switzerland and Australia. By 15 September it was off southern England, moving up the Channel.
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A sanctioned tanker sailed the length of Europe to Russia's biggest Baltic oil terminal. Our AIS tracked Aktros, sanctioned as Torex, from the western Mediterranean on 31 August, out through Gibraltar and up the Atlantic to the Gulf of Finland.
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Since 13 September it has sat at Primorsk, the largest crude terminal on Russia's Baltic coast. Aktros, sanctioned as Torex, flies a Sierra Leone flag, was built in 2003, and is sanctioned by the EU, UK, Canada, Switzerland and Australia.
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A designated tanker, broadcasting a Russian identity, crossed from the Arctic toward Ireland this week. Our AIS tracked it off Russia's Arctic coast and down the Norwegian coast to 9 September. Then nothing, for about 90 hours and 1,800 km, until it surfaced west of Ireland.
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On 13 September it reappeared in Ireland's Atlantic approaches, about 80 km off the south-west coast at closest, then ran south toward the Bay of Biscay on the 14th. As Trump visited Doonbeg, the Irish Air Corps flew a patrol over the tanker, Irish media reported.
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The EU boarded this shadow-fleet tanker south of Sicily on 30 August, checked its flag, and let it go. Fourteen days later our AIS had MV Sun in the Gulf of Finland. In April Estonia said it would stop detaining shadow-fleet tankers in its waters. Boarding is not detention.
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The EU's naval mission has boarded six suspected Russian shadow-fleet tankers since its mandate was extended. A flag check ends in release. The seizures are French and British, and Estonia stopped detaining them in the Baltic since Russia put warships in the Gulf of Finland.
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The shadow fleet runs on fuel, and the EU is now sanctioning the ships that deliver it. Its first bunkering vessels are designated: ships that refuel sanctioned tankers at sea so they never enter a port that might detain them. KUMANA was among the first five.
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IMO 9832559 broadcasts PROMETEY on AIS. Its sanctions record calls the same hull VIRAT, formerly Valour and Crudesun. PROMETEY is not on any of that paperwork. The EU, US, UK, Switzerland and Canada sanction it, all keyed to the IMO number.
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The IMO is the one identifier a hull cannot repaint. Our AIS has logged more than 40,000 position fixes under IMO 9832559, every one broadcasting PROMETEY, not VIRAT. Source: OpenSanctions, our AIS, 9 September 2026.
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ANTARES has carried eight names: Antarctica, Peria, Stena Antarctica, Imperia, Minerva Antarctica, Pictor, Four Antarctica, and now ANTARES. The US, UK and Canada sanctioned it, and the sanctions record still carries an earlier one, Pictor. IMO 9322827 is the constant.
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We hold 855 AIS fixes for this hull broadcasting as ANTARES, spanning 29 May to 28 July. The sanctions listing still expects a name screen for Pictor. Source: OpenSanctions vessel datasets, our AIS records, 9 September 2026.
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A sanctioned tanker loaded to 15 m draft in Russia's Gulf of Finland on 25 August, ran laden across the North Sea, then went dark off Norway on 4 September. KUSTO is sanctioned by the EU, UK, Switzerland, Canada and Australia. A listing reaches only as far as the signal does.
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A 15 m draft means KUSTO took on a full cargo at anchor in the Gulf of Finland. What it loaded comes from a bill of lading, which AIS cannot show. As of 9 September it had been dark for five days, last seen off Norway. Source: our AIS, OpenSanctions, 9 September 2026.
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ARABESCA went AIS-dark for 135 hours in the North Sea, about 2,700 km off the grid. It resurfaced off Lisbon on 31 August still drawing 14.7 m, and anchored off Port Said on 8 September, still laden. Sanctioned by the EU, UK, Canada, Switzerland and Australia. IMO 9288734.
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Draft only shows ARABESCA carried cargo the whole way. What it carries stays off AIS. It anchored off Port Said on 8 September and entered the Suez Canal southbound on 9 September, still drawing 14.7 m. Source: our AIS, OpenSanctions, 9 September 2026.
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A sanctioned Sovcomflot tanker loaded near Russia's Gulf of Finland terminals around 30 August. Eight days on, Georgy Maslov is off southwest Portugal, still laden, having crossed the Baltic, North Sea, Channel and Biscay. About 4,500 km sailed, still heading south.
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179 tankers show up flagged in sanctions data, and no government has designated any of them. 178 are on Ukraine's war-tracking list, which names vessels but does not sanction them. On a feed, a tracking-list hit and a government sanction look identical. They are not.
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Screen the UK sanctions list for the tanker STILGAR and nothing comes back. Screen by IMO number 9291250 and it is there, designated as CORTEX and sanctioned by five countries. Ukraine lists the same hull as STILGAR. The IMO is the field that finds it every time.
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We hold 60,664 AIS fixes for this hull broadcasting as STILGAR. In force: UK, Canada, New Zealand, Ukraine, Australia. The EU and Switzerland listed it, then delisted in 2026. Source: OpenSanctions vessel datasets, our AIS records.
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The US has sanctioned 738 oil tankers. The EU has sanctioned 635. They agree on 255. Screen a ship against one list and you clear ones the other has named: 483 sit on the US list and not the EU's, 380 the reverse. Of every tanker either has named, less than a quarter are on both.
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This counts formal government designations, each hull once by its IMO. A further 179 tankers in the same set sit on watch-lists or port-state detention records with no government behind them, a different compliance signal again. Source: OpenSanctions vessel datasets, 7 Sep 2026.
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IMO 9270749 broadcasts as IRA. Its registry lists it as Bela. It has also sailed as Gauri, Jag Prabha and Pacific Oasis. One hull, five names. Six sanctions authorities designate it by the number that never changes: the IMO.
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We hold 1,677 AIS fixes for this hull broadcasting as IRA, the most recent on 21 June 2026. The six authorities designating it: UK, EU, Canada, Australia, Switzerland, Ukraine. Source: OpenSanctions vessel datasets, our AIS records.
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