The shadow fleet is the war: the 600-plus tankers the West has finally named

Western governments have finally named the tankers that move Russia's oil, but a U.S. designation bites far harder than a European one, and Washington stopped adding names in January 2025.

By the Eastern Europe Desk · May 20, 2026 · 7 min read

Western governments have put names to the tankers that move Russia's oil. The sharper question is which names bite: a U.S. designation cripples a ship far faster than a European one, yet Washington stopped adding names in January 2025 while Brussels has pushed its list past 630.

Crude oil is the Russian state's main source of hard currency. Oil-and-gas revenue made up roughly 30 percent of federal income in 2024 and has not fallen below a quarter of the budget in any quarter of the war.[1] That oil reaches its buyers, mainly India, China, and Turkey, aboard a fleet of aging tankers that hide their ownership, switch off their transponders, and tranship cargo at sea. It is the largest sanctions-evasion operation of the post-2014 era.

For the war's first three years the fleet operated largely without named ships attached to it, and that has now changed. By the end of 2025 the European Union alone had designated 604 vessels as part of Russia's shadow fleet, 41 of them added on December 18;[2][3] a further round in April 2026 added 46 more, lifting the EU total to 632.[13] The United States designated 183 vessels, most of them tankers, in a single action on January 10, 2025, alongside Gazprom Neft and Surgutneftegas.[4] The United Kingdom has added scores more, including 135 tankers in one July 2025 round.[5] With heavy overlap between the three lists, the distinct total runs comfortably past 600.

Which designation bites

The shadow fleet is not new; Western outlets and trackers, Lloyd's List, Kpler, S&P Global, Vortexa, have followed it since 2023. What the 2025 sanctions rounds exposed is that the *designating authority* decides the consequence. A Kpler analysis of third-quarter 2025 data found that a ship loses about 70 percent of its carrying activity in the six months after a U.S. designation, against about 30 percent for one listed only by the EU or U.K.[6]

The asymmetry comes from the dollar's place in oil settlement. OFAC wields secondary sanctions: any non-U.S. bank that handles a designated entity risks losing access to dollar clearing. That threat makes Indian banks, Chinese state lenders, and Gulf intermediaries reluctant to touch payments tied to a U.S.-listed ship. EU and U.K. designations carry no equivalent reach. A vessel listed only in Brussels can keep trading through Indian and Chinese channels with far less friction; the same ship, once listed in Washington, loses its insurance, struggles to book port calls, and is pushed to transfer cargo ship-to-ship at sea.[7]

The gap is structural. The dollar's role in settling oil trades gives Washington an enforcement reach Brussels and London lack, and their efforts to build an equivalent, the U.K.'s Office of Trade Sanctions Implementation, launched in October 2024, among them, have not closed it.[8] The G7 price cap remains the other lever, squeezing the price Russia nets rather than the ships that carry the oil; the two tools work on different margins.

The campaign's central paradox is that its most potent instrument is the one least used. Washington added no new Russian-vessel designations after January 2025, even as the EU kept listing ships through 2025 and into 2026, reaching 632 by April.[9][13]

Who owns the ships

The fleet's ownership is deliberately mixed, and four kinds of owner recur.

The first is **direct Russian state ownership**, vessels held by Sovcomflot, Rosneft, Gazprom Neft, and their subsidiaries. These are the easiest to find and the most consistently sanctioned across all three jurisdictions; roughly 80 fall in this group, and nearly all are now listed somewhere.[4]

The second is **Greek and Greek-Cypriot ownership**. Greek owners sold aging tankers into the trade in bulk after the 2022 price cap: the Kyiv School of Economics and OCCRP have identified about 127 former Greek-owned vessels now in the fleet, worth close to $4 billion at sale.[11] Enforcement against them has been politically cautious, given how deeply Greek tonnage is woven into EU shipping.

The third is **Gulf shell-company ownership**, tonnage nominally held by firms in Dubai, Sharjah, and the wider Gulf. The U.S. Treasury's January 2025 action named dozens of these shells; Gulf cooperation has been uneven, and some de-registered companies simply reappeared under new names.[4]

The fourth, and largest, is **flag-of-convenience tonnage** registered in Liberia, the Marshall Islands, Panama, the Comoros, Cameroon, and a rotating cast of small registries. These are the hardest to trace and the costliest to sanction, because ownership is layered across jurisdictions and the flag states have little enforcement capacity even when willing.[6]

Estimates of the total fleet range from 600 to 1,400 vessels depending on the definition.[9] The designations cover most of the actively trading ships but not all, and operators have replaced 60 to 70 percent of designated tonnage within a year of each round, buying or repurposing other hulls.[6] That replacement rate is the campaign's central problem: naming a ship is not the same as removing its cargo from the market. The EU's April 2026 package made a first attempt at the supply side of the problem, imposing due-diligence obligations on EU sellers of tankers, including a mandatory contractual ban on onward transfer to Russia.[14]

What it adds up to

The cumulative effect has been real but not decisive. Designations have measurably compressed the price Russia nets on its crude,[12] yet they have not produced the fiscal crisis some Western analysts expected at the outset. Russia's 2025–26 deficits are real; its export volumes are broadly intact, sold at a thinner margin. The fleet has proven more resilient than the gloomiest forecasts assumed, largely because replacement tonnage arrives almost as fast as designations.

The record reads as a long-cycle constraint rather than a knockout: a steady squeeze that forces budgetary trade-offs over years rather than months. Whether the war ends before that squeeze binds depends on three things: how fast ships are named, whether the naming carries dollar-clearing reach or only European reach, and how quickly Russia can keep replacing hulls.

The lesson the 2025 record offers is narrower than the usual claim that "sanctions don't work." They work unevenly: U.S. listings bite hardest but have stalled, European listings are broad but softer, and replacement tonnage blunts both. Closing the gap means pairing American financial reach with European persistence, and out-running the replacement rate. That, not the raw number of names, is the unfinished work.

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