LST-1077 was laid down on 21 March 1945 at Hingham, Mass., by the Bethlehem-Hingham Shipyard, Inc.; launched on 18 April 1945; and commissioned on 8 May 1945, Lt. I. W. Matthews in command.
Following World War II, LST-1077 performed occupation duty in the Far East until late November 1945. She was decommissioned on 31 July 1946 and assigned to the Pacific Reserve Fleet. Recommissioned on 6 September 1950, LST-1077 performed extensive service during the Korean War. She was decommissioned once again on 12 May 1955. The ship was redesignated Park County (LST-1077) (q.v.) after counties in Colorado, Montana, and Wyoming. She was later completely modernized and recommissioned on 9 April 1966 for service in the Vietnam War. Park County was decommissioned for the final time and transferred to the Mexican Navy in September 1971 where she served as Rio Panuco (IA-1).
LST-1077 earned five battle stars for the Korean War and one award of the Meritorious Unit Commendation, two awards of the Navy Unit Commendation, and 11 battle stars for the Vietnam War.