SS Westernland was a transatlantic ocean liner that was launched as Regina in Scotland in 1917, renamed Westernland in 1929 and was scrapped in 1947. She began her career as a troop ship repatriating US troops after the Armistice of 11 November 1918. In the Second World War, Westernland served as a troop ship, repair ship and destroyer depot ship.

A repair ship is a naval auxiliary ship designed to provide maintenance support to warships. Repair ships provide similar services to destroyer, submarine and seaplane tenders or depot ships, but may offer a broader range of repair capability including equipment and personnel for repair of more significant machinery failures or battle damage.