UK Shadow-Fleet Boarding Turns Russia Sanctions Into Active Maritime Enforcement
British forces boarded the sanctioned shadow-fleet tanker SMYRTOS in the Channel, with the government citing domestic and international law, including UNCLOS Article 110 right-of-visit concepts and UK sanctions powers if a vessel is stateless.
BY GEOPOLITICS DESK · JUNE 18, 2026 · 1 MIN READ
British forces boarded the sanctioned shadow-fleet tanker SMYRTOS in the Channel, with the government citing domestic and international law, including UNCLOS Article 110 right-of-visit concepts and UK sanctions powers if a vessel is stateless. The CPS later charged the vessel’s captain with allegedly breaching Russian sanctions by supplying or delivering prohibited oil or oil products from Russia to a third country. This is a shift from list-based compliance to operational enforcement. Shipping, insurance, trade and disputes teams need to prepare for vessel seizures, criminal exposure, insurance questions and evidence issues around cargo origin and routing.