a lifeguard station south of Kyushu, made patrols just off Bungo Suido, and conducted visual and photo reconnaissance of Tori Shima, approaching to within about one mile (1.6 km) of the island. On 21 June, she departed Bungo Suido to join a coordinated attack group (wolfpack) "Street's Sweepers" patrolling the Yellow and East China Seas. She conducted patrols west of Tsushima Strait and then fired a few diversionary rounds of five-inch (127 mm) fire on Hiradoshima before moving west to take up patrol along the southwest coast of Korea. On 1 July, her persistence paid off when, after pursuing a sailing vessel, she discovered a fleet of schooners. Working quickly to take advantage of surprise and to prevent the ships from fleeing to nearby shallow water, Trutta sank seven of the three- and four-masted schooners in a four-hour action. Crew members boarded and searched two of the vessels and put the schooner crews in lifeboats before destroying the ships. On 6 July, while patrolling the southern approaches to Daito Wan, she came upon a tug towing three schooners, quickly dispatched the tug and two of its tows with five-inch (127 mm) fire, and left the third in flames. She continued patrolling along the Korean coast until the afternoon of 12 July when she departed the area and set her course for the Marianas. End of hostilities She arrived at Guam on 18 July, underwent refitting by , and then got underway on 12 August for her third patrol. Before Trutta arrived in her assigned area, she received official word that peace negotiations had obviated continuing her patrol; the submarine set a northeast course. She arrived at Midway on 24 August and two days later headed home via Pearl Harbor and the Panama Canal. After calls at New Orleans and other gulf and east-coast ports, she arrived at New London early in January 1946 and reported to the Sixth Fleet for inactivation. By March 1946, she had been placed out of commission. She remained in the Reserve Fleet until 1951 when she was reactivated at New London. Recommissioned in March 1951, she operated out of that port until 4 May 1952 when she was again decommissioned, this time at Charleston. Following conversion to a "Guppy II A" submarine, she was recommissioned on 2 January 1953 and joined Submarine Squadron 4 at Key West. Post World War II U.S. service For the