The minesweeper was assigned to the screen of a resupply convoy bound for Okinawa which arrived there on 27 May. "Success" patrolled off Okinawa until 12 June. From the 13th to the 20th, she swept mines in the East China Sea. After a brief logistics period at Kerama Retto, she swept mines between Formosa and the coast of China from 4 to 15 July. From the 22nd to the 30th, she again swept the East China Sea. On 13 August, she and departed Okinawa to sweep an area near Kyūshū, from the 14th to the 24th before returning to port. She sailed on 30 August for the southwest coast of Korea and swept mines there until 7 September. Two days later she was assigned to the U.S. 5th Fleet and swept the approaches to Sasebo, Japan, which became her base of operations. She cleared mines around the islands there, and then swept known minefields from Kyūshū to Korea until early December.