The UK government has reportedly found a legal basis to authorize military operations against Russian shadow fleet vessels, which transport oil around the world to generate revenue for Moscow’s war effort, The Times UK reported. Officials believe that under the Sanctions and Money Laundering Act 2018, soldiers could board and detain tankers that are sanctioned or flying false flags, classifying them as legally stateless.
The shadow fleet, consisting of more than 500 sanctioned vessels, is estimated to have generated £100 billion for Russia last year. Many of these ships sail under questionable flags or switch registration to avoid detection, a tactic known as “re-flagging.” UK authorities have noted recent attempts by vessels to claim Russian flags to seek Kremlin protection.
While no British forces have yet conducted raids, ministers are exploring joint operations likely to involve the Royal Navy, Royal Air Force, Special Forces, and NATO allies. Defence Secretary John Healey vowed last week to “clamp down” on the shadow fleet, following the US-led seizure of the re-flagged tanker Marinera in the Caribbean, which involved Navy SEALs, destroyers, fighter jets, and gunships. UK reconnaissance and support were reportedly deployed alongside the operation.
Special Boat Service (SBS) commandos, an elite Royal Navy unit, are believed to be a likely candidate for any future interventions. SBS personnel have previously conducted high-risk maritime operations, including detaining stowaways on a hijacked tanker near the Isle of Wight in 2020. Operations of this type require precision and are typically executed in coordination with airborne support, snipers, and helicopters.
Maritime law requires vessels to display legitimate flags from the countries in which they are registered, granting them legal protections in international waters. Sanctioned or falsely flagged vessels, such as those in the shadow fleet, could now be considered stateless and therefore valid targets for military action. Experts caution that authorities must verify the authenticity of a vessel’s flag before intervention, particularly for ships registered in “flags of convenience” countries such as Comoros, Tanzania, Guyana, and St. Kitts and Nevis.
The Times UK highlighted that the legal framework would allow the UK to take action against ships operating under false or dubious registration, potentially enabling broad operations to disrupt Russia’s shadow fleet and cut off financing for its military campaigns. Analysts estimate that around 1,500 vessels globally may be involved in shadow fleet operations, significantly complicating enforcement.
