Shadow Fleet

The shadow fleet has expanded to an estimated 632 designated vessels following the EU's 20th sanctions package in April 2026, which added 46 tankers and imposed a blanket ban on Russian and Belarusian crypto assets and stablecoins. Combined US, UK, and EU designations now cover the largest share of the global shadow tanker fleet ever targeted, though enforcement remains uneven outside European waters.

Iran pioneered shadow fleet tactics from 2010 as sanctions cut its exports from 2.5 million to one million Barrels Per Day. Russia expanded the fleet by roughly 70% in the nine months after its February 2022 invasion. Vessels average 20 years old, with 60% aged 20 or over. The International Group of P&I Clubs, covering 90% of the world's oceangoing fleet, has largely withdrawn, leaving most shadow tankers without meaningful pollution or salvage cover. CREA found 56% of Russian crude moved on sanctioned shadow tankers in February 2026.

Western countermeasures intensified sharply in mid-June 2026. On 14 June, Royal Marines rappelled from helicopters onto the Cameroon-flagged shadow tanker Smyrtos in the English Channel, Britain's first such interdiction operation, seizing the vessel and arresting an Indian national for suspected sanctions offences. The EU's 15 June mini-package listed 24 additional shadow-fleet operators, and on 17 June OFAC's General Licence 134C lapsed without a successor, removing the Western vessel-services umbrella (insurance, crewing, bunkering, classification, salvage) from Russian-origin crude at the same moment. The two measures align for the first time, squeezing both the vessel layer (EU designations) and the insurance layer (GL 134C expiry) simultaneously. The fleet remains indispensable to Russian war financing, transporting the bulk of the crude revenue that funds roughly 30% of Russia's federal budget. The interdiction pace continued into mid-July: OFAC blocked a further 28 vessels on 14 July, alongside Iran's central bank, as part of the same expiring-clock sanctions week that also produced the EU's one-week Russia oil price cap stopgap. Ukraine has also added a kinetic dimension to the pressure: its military said it struck 159 shadow-fleet vessels in a 12-day campaign through mid-July, up sharply from 35 strikes in the previous 96 hours, though the tally is a Ukrainian-sourced claim rather than an independently verified count.