A tanker carrying Russian oil travelled through the Turkish Straits with a questionable protection and indemnity certificate on board, a senior Turkish shipowner has revealed.

“Going through the Straits like that is a great crime,” Mehmet Gungen of Gungen Maritime & Trading said during a panel discussion at the Turkish Maritime Summit in Istanbul on 1 July.

Gungen was supposed to take delivery of the vessel’s cargo in a ship-to-ship transfer in the Mediterranean a few weeks ago.