1944. She departed Fremantle once more 27 October 1944, bound for the South China Sea. She attacked a coastal convoy 14–15 November, sinking cargo ships Nichiei Maru and Yusan Maru before shallow water forced her to break off the fight. The attrition of Japanese shipping was beginning to tell, and Jack found no more opportunities before ending her patrol at Pearl Harbor 24 December 1944. From there she returned to San Francisco for a major overhaul. Eighth and ninth war patrols, April – August 1945 The veteran submarine returned to Pearl Harbor 1 April 1945, and departed on her eighth war patrol 26 April 1945. With most Japanese shipping sunk or reluctant to venture into the sea lanes, her major job was to act as lifeguard for the massive carrier strikes and bomber missions against the Japanese mainland. The submarine returned to Guam for refit 18 June and set out again 12 July for her ninth and last war patrol. Stationed between Luzon and Okinawa, she again performed lifeguard duty until the Japanese surrender 15 August 1945. Her ninth patrol ended at Midway Atoll 29 August. Greek service Jack sailed for the United States 5 September 1945, steaming via Pearl Harbor and the Canal Zone to New York 3 October 1945. She decommissioned at Atlantic Reserve Fleet, New London 8 June 1946, and was placed in the Atlantic Reserve Fleet. She recommissioned briefly 20 December 1957, to prepare for transfer to the government of Greece and after training operations was loaned to the Royal Hellenic Navy 21 April 1958. She served as Amfitriti (S-17) (also spelled Amphitriti), until 1967, when she was returned by Greece and sunk as a target by the US 6th Fleet, 5 September 1967, in the Mediterranean Sea. Awards Jack was credited with sinking 76,687 tons of Japanese shipping. In addition to her Presidential Unit Citation (US), Jack received seven battle stars for World War II service. All patrols, except for her second and ninth, were designated successful. In culture Jack is the subject of the series premier of the syndicated television anthology series The Silent Service. The episode, entitled "The Jack at Tokyo," aired 5 Apr 1957 and was hosted by Rear Admiral Thomas M. Dykers (ret). Jacks operations during the Pacific War are chronicled in Silent Running: My Years on a World War II Attack Submarine. See also List of most successful American submarines