Completed August 1918 as British War Subadar for Shipping Controller, managed by Hunting & Son. 1919 sold to Anglo-Saxon Petroleum Co, London and 1921 renamed Crenatula. 1927 sold to Anglo-Colonial Shipping Co, London. 1930 sold Norway and renamed Marit.

Since 1940 in Admiralty Service as Royal Fleet Auxiliary (RFA). 

At 13.47 hours on 4 Oct, 1943, U-596 fired a spread of four torpedoes at the convoy XT-4 about 60 miles west of Derna, heard three detonations and claimed three ships probably sunk. In fact, only the Marit (Master Sverre Caspersen) had been hit. The explosion destroyed one lifeboat and killed one Indian crew member working on deck. The tanker developed a heavy list to starboard when the oil in the destroyed tanks on the port side ran out into the sea. Trimming the vessel by letting out water from #1 tank on the starboard side proved to be useless and the surviving seven Norwegian officers, five British gunners and 41 Indian crew members abandoned ship in three lifeboats. The ship sank 30 minutes after the crew left. The survivors were picked up by an escort vessel and taken to Benghazi, where four injured men were brought to a hospital, but one of the gunners later died of wounds.