On 15 December 1954, "Cogswell" arrived in San Diego to join the Pacific Fleet. From that time through 1963, she has alternated tours of duty with the 7th Fleet in the Far East with coastwise operations. On her 1955 cruise, she took part in the evacuation of the Tachen Islands. She returned to the Far East in 1956 and each succeeding year through 1960. In 1957, "Cogswell" visited Australia and the Fiji Islands, and in 1958, she took part in nuclear weapons tests at Johnston Island, and patrolled in the Taiwan Straits when Chinese Communists resumed shelling of the offshore islands and threatened their assault.