Cockaponset was a steam cargo ship built in 1918–1919 by Pacific Coast Shipbuilding Company of Bay Point for the United States Shipping Board as part of the wartime shipbuilding program of the Emergency Fleet Corporation (EFC) to restore the nation's Merchant Marine. The vessel was largely employed on the Gulf Coast of the United States to Europe route until 1930 when she was laid up. In late 1940 the ship together with 15 other vessels was acquired by the British government to alleviate significant shortage of tonnage due to an ongoing German U-boat campaign. In May 1941 the freighter was torpedoed and sunk on her first war trip to the United Kingdom.