HMS Unicorn 172: Maintenance Carrier (modified Colossus-class Light Fleet Carrier) 14750 tons standard, 20300 tons full load. Built Belfast 1939-43, commissioned 12 Mar 1943; operational 1943 then reverted to designed supply and repair role; war service Atlantic and Mediterranean 1943, East Inches 1944-5, Pacific 1945, Korea 1950-3; sold to scrap 1959, stripped at Dalmuir, hull broken up at Troon from Mar 1960.