APA-52 was the second US Navy vessel named Sumter. The ship was laid down on 3 April 1943 as Iberville by Gulf Shipbuilding of Chickasaw, Alabama, for the Waterman Steamship Company; launched on 4 October 1942; sponsored by Mrs. J. F. McRae; and acquired by the Navy on 30 April 1943 as AP-97. She was converted into an attack transport (APA-52) by the Maryland Drydock Company of Baltimore, Maryland, and commissioned on 1 September 1943, Capt. A. D. Blackledge in command.