Segundo and . After sinking four wooden ships in three separate surface gun actions, she deposited three Japanese prisoners at Guam before terminating her patrol at Pearl Harbor on 26 March 1945. On 7 May Razorback headed west again. Assigned to lifeguard duty in the Nanpō Islands and Tokyo Bay areas, she rescued Lieutenant Colonel Charles E. Taylor, a P-51 fighter pilot from the 21st Fighter Group on 25 May. On 5 June she rescued four B-29 Superfortress crewmen shot down during an air raid over Kobe, Japan. Razorback retired to Midway Island to end that patrol and refit on 27 June. On 22 July Razorback departed Midway Island for patrol in the Okhotsk Sea, where she sank six wooden cargo sea trucks (i.e., small Imperial Japanese Navy ship types used for frontline logistics) and damaged two in a surface gun action. The remainder of the patrol was spent performing lifeguard services off Paramushiro for Alaska-based planes. On 31 August Razorback entered Tokyo Bay with 11 other submarines to take part in the formal Japanese surrender. She departed 3 September, arrived at Pearl Harbor, Hawaii on 11 September and San Diego, California on 20 September. 1945–1954 After the war she remained active with the Pacific Fleet serving off Japan and China in early 1948 and again in late 1949. She won the Navy "E" for overall excellence in 1949. In August 1952 she decommissioned incident to conversion to a GUPPY IIA-type submarine. She recommissioned in January 1954 and reported to Submarine Squadron 10 at New London, Connecticut, for shakedown and training. 1954–1970 Following shakedown Razorback was transferred to the United States West Coast and on 24 May 1954 became a unit of Submarine Squadron 3, based at Naval Station San Diego in San Diego, California. The remainder of 1954 and 1955 were spent providing antisubmarine training services for local surface and air units. In 1956 her range of operations was extended north to Canada and on 24 June 1957 she got underway for an extended Far East patrol that included extensive surveillance of the Russian port of Petropavlovsk. She won a second Battle "E" in 1959. On 11 May 1962, Razorback participated in the "SWORDFISH" nuclear weapons test, a test of the ASROC (Anti-Submarine Rocket). An ASROC with a 10-kiloton, W44 nuclear depth charge warhead was fired by the destroyer at a target raft from a range of . Razorback