The unescorted Liberty ship SS John Barry was transporting a cargo of 3 million silver one-riyal coins from Aden to Ras Tanura in the Persian Gulf as part of an American government agreement with the Saudi royal family; the silver coins had been minted in America for Saudi monarch King Abdul Aziz Al-Saud and were stacked in huge boxes in the hold, and went down with the ship when she was torpedoed at coord, about 100 nautical miles south of the entrance to the Arabian Sea.