French President Emmanuel Macron announced the seizure of the “shadow fleet” tanker Deyna in the Mediterranean Sea on March 20. Photo: Emmanuel Macron (@EmmanuelMacron / X)
The French Navy has detained the oil tanker Deyna (IMO 9299903), which authorities consider to be part of Russia’s “shadow fleet.” The operation, which took place in the Mediterranean Sea, was announced on X (Twitter) by President Emmanuel Macron earlier today.
According to Macron, vessels in the “shadow fleet” evade international sanctions and violate maritime law, profiting from the war while financing Russia’s military effort. The president described them as “profiteers of war,” adding that France intends to stop their activity. “The war involving Iran will not deflect France from its support for Ukraine, where Russia’s war of aggression continues unabated,” Macron said.
The detention of suspected “shadow fleet” ships has increased in recent months. In January, the French Navy detained the tanker Grinch in the Mediterranean while the vessel was en route to an undisclosed destination after departing from the Russian port of Murmansk. In February, the vessel’s owner paid a multimillion-euro fine, after which the tanker was released. In early March, French forces supported an operation by Belgian authorities to detain the tanker Ethera in the North Sea; the vessel was forced into the port of Zeebrugge and was later fined 10 million euros.
Russia’s “shadow fleet” consists of hundreds of aging tankers formally owned by offshore companies and sailing under false flags. The Kremlin and traders linked to it use the vessels to circumvent sanctions and the price cap on Russian oil. According to the Helsinki-based Centre for Research on Energy and Clean Air, in the first nine months of 2025 alone more than 100 such vessels used false flags while transporting about 11 million tons of Russian oil worth 4.7 billion euros.