The Adalia, a steel hulled steamship laden with a cargo of timber and carrying an unspecified number of passengers, 3847 GRT, 110 L x 14 B metres, built 1899 Sir James Laing & Sons. Ltd. Sunderland, Tyne & Wear, England, owner Ellerman Lines Ltd. (Hall Line Ltd.), Liverpool, England, registered in Liverpool, England.
This vessel in passage from Archangel, Russia, for London, England, was attacked by the German submarine U 94, Captain Alfred Saalwächter, and sunk by gunfire at a position approx 53 miles NE of Muckle Flugga, Unst on July 29th 1917.
One soul was lost as a result of this incident, that of Chief Steward C.F. Billes who died on August 4th. He was interred in Voe Kirkyard, and his grave marker can be seen there.