British forces have intercepted and boarded a sanctioned oil tanker believed to be part of Russia’s so-called shadow fleet during a major operation in the English Channel, Prime Minister Keir Starmer announced on Sunday.
The operation, which lasted approximately six hours, involved Royal Marine Commandos, specialist officers from the National Crime Agency (NCA), and support from the Royal Air Force. It marked the first time UK authorities have boarded a sanctioned vessel linked to Russia while transiting through British waters.
According to the Ministry of Defence (MoD), the tanker, identified as Smyrtos, has been detained and will remain under close monitoring off England’s southern coast while investigations continue.
Prime Minister Keir Starmer described the mission as a significant step in efforts to enforce sanctions against Russia.
“This successful operation delivers another blow to Russia and sends a clear message to those helping finance Vladimir Putin’s war in Ukraine that they cannot operate with impunity,” he said.
Maritime tracking data indicates that the vessel is currently anchored off the coast of Weymouth in southern England and is sailing under the flag of Cameroon. The tanker departed from Russia’s Ust-Luga oil terminal near St. Petersburg on 5 June before entering the English Channel over the weekend.
The vessel was sanctioned in July 2025 and has since undergone several changes, including a new name and multiple flag registrations. Previously known as Myrtos, it was later renamed Smyrtos.
Western governments have accused Russia of using a vast “shadow fleet” of tankers to circumvent international sanctions imposed on its oil exports. According to British authorities, the network consists of more than 700 vessels and is responsible for transporting a large share of Russia’s sanctioned oil shipments.
The UK government has intensified efforts to target these operations as part of broader measures aimed at reducing Moscow’s oil revenues and limiting funding for its military activities in Ukraine.
Earlier this year, the British government expanded the powers of its armed forces, allowing them to board sanctioned vessels passing through UK territorial waters. Authorities say more than 500 vessels linked to Russia’s shadow fleet have already been sanctioned by the United Kingdom.
These sanctions prohibit affected ships from entering British ports and prevent UK-based companies and individuals from providing insurance, financial services or brokerage support to vessels involved in transporting Russian oil.
The interception comes amid renewed debate over Britain’s defence spending plans. The government is preparing to publish its long-awaited Defence Investment Plan ahead of the upcoming NATO summit.
Recent days have seen high-profile resignations within the defence establishment. Former Defence Secretary John Healey stepped down after expressing concerns that proposed military spending levels would not adequately address the country’s security needs. Armed Forces Minister Al Carns also resigned, arguing that the defence strategy lacked sufficient ambition and financial backing.
Speaking to the BBC, Carns explained that the operation likely involved military personnel approaching the tanker at low altitude before boarding and securing the vessel within British waters.
He suggested that similar operations could take place in the future if opportunities arise, following the successful interception of the tanker.
The Ministry of Defence confirmed that the mission involved support from RAF maritime surveillance aircraft, as well as the Royal Navy vessels HMS Sutherland and HMS Ledbury.
British officials also highlighted close coordination with France during the operation. The cooperation follows recent joint efforts by both countries to monitor and disrupt vessels suspected of helping Russia bypass international sanctions.
The UK government maintains that targeting the shadow fleet remains a key component of its strategy to restrict Russia’s energy revenues and increase pressure on Moscow over the war in Ukraine.
Be the first to leave a comment