Departing San Diego on 25 January 1954, "LST-845" steamed on her third deployment with the 7th Fleet in the Far East. She reached Yokosuka on 25 February; and during the next five months cargo runs and amphibious exercises sent her from Japan to Iwo Jima, Okinawa, and Inchon. On 14 August she departed Yokosuka for Haiphong, North Vietnam, to provide support for "Operation Passage to Freedom." She reached Haiphong on 27 August and made four runs to Tourane, South Vietnam, during the several weeks. In addition to transporting military cargo, she carried civilian refugees seeking to escape from Communist domination in North Vietnam. After returning to Yokosuka on 20 October, "LST-845" sailed for the United States on 7 November and arrived San Diego on 12 December. While operating out of San Diego, "LST-845" was renamed USS "Jefferson County" (LST-845) on 1 July 1955. She trained along the California coast until 13 August 1957 when she again departed for the western Pacific. She arrived Yokosuka on 13 September and resumed cargo runs and amphibious exercises which carried her along the Japanese coast to Okinawa, Hong Kong, and the Philippines. Departing Dingalan Bay, Luzon on 1 March, she arrived San Diego on 1 April. "Jefferson County" sailed for the Marshall Islands on 9 October; and, after arriving at Kwajalein on 2 November, she operated during the next three months supporting the establishment of Air Force stations in the Marshalls. She returned to San Diego on 4 March 1959. Following amphibious training out of San Diego, she departed for the Far East on 1 October 1959. She reached Yokosuka on 3 November and resumed training and readiness exercises along the coast of Japan. Sailing for the United States on 12 April 1960, she arrived San Diego on 5 May. "Jefferson County" was decommissioned at San Diego on 28 November 1960 and entered the Pacific Reserve Fleet. Her name was struck from the Naval Vessel Register on 1 February 1961. She was sold for scrapping to Zidell Explorations, Inc. of Portland, Oregon on 22 August 1961. "LST-845" received five battle stars for Korean War service.