The Russian cargo vessel Sinegorsk sailed into the Bristol Channel late Tuesday and appeared to drop anchor roughly two miles off the coast of southwest England, according to The Telegraph. British authorities ordered the vessel to leave after the Russian crew claimed it had stopped to conduct “essential safety repairs,” according to the outlet. Although Sinegorsk is not under U.K. sanctions and is not believed to be part of Russia’s so-called “shadow fleet,” Western governments have increasingly linked Russian vessels to suspicious activity near critical undersea infrastructure. Earlier this year, Britain tracked the Russian vessel Yantar, which the U.K. Ministry of Defence described as a spy ship. Russian is estimated to have hundreds of vessels in the so-called “shadow fleet,” enabling the export of oil despite international sanctions.