Assigned to the Naval Transportation Service, Nanticoke reported for duty on 18 October to the Service Force, U.S. Atlantic Fleet. Arriving at Norfolk, Virginia, on 28 November, she was decommissioned there on 4 January 1946 and returned to the Maritime Commission on 12 January. Briefly operated by the American Petroleum Transport Corporation as M/V Sugarland in 1946, she was acquired later in the year by the Argentine Navy and commissioned as ARA Punta Delgada (B–16). She served as part of the Argentine Navy until 1985, when she burnt and sank.