"Success" then began clearing the Okinawa area for the impending assault upon that Japanese stronghold. After the landings there on 1 April, the minesweeper also performed antiaircraft and antisubmarine patrols. Five days later, the Japanese launched their heaviest attack by suicide planes against American ships at Okinawa. was crashed by a suicide plane and "Success" picked up 78 survivors. On 15 April, she splashed a "Tony" during an air raid. The ship and her division departed the operating area on 5 May for Ulithi and arrived on the 9th.