US-sanctioned ship with unknown flag and insurance had ‘right of innocent passage’, says Denmark
Liberia deflagged Osperous on March 18, while insurer Ingosstrakh confirmed it cannot cover tankers designated by the US government
Aframax tanker Osperous sailed through Danish Straits on April 3, nearly three months after it was sanctioned for breaching the G7 oil price cap on Russia, with class surveys overdue and expired class certificates