LST-642 was laid down on 5 June 1944 at Seneca, III., by the Chicago Bridge & Iron Co.; launched on 8 September 1944; sponsored by Mrs. Sylvia W. Nesbitt; and commissioned on 28 September 1944.
During World War II, LST-642 was assigned to the Asiatic-Pacific theater and participated in the assault and occupation of Iwo Jima in February and March 1945. She performed occupation duty in the Far East until mid-February 1947. The ship was decommissioned on 30 June 1947. LST-642 was abandoned at Barter Island, Alaska, on 10 February 1948 and struck from the Navy list on 19 February that same year.
LST-642 earned one battle star for World War II service.