 After escorting a convoy to Eniwetok, she swept the harbor at Maug Island, Marianas, 15 March 1945, and then bombarded the beach the following day.The wooden minesweeper patrolled around Iwo Jima in April 1945 and exploded two floating mines before returning to Saipan.As the long Pacific war drew to a close, "YMS-321" returned to Pearl Harbor 15 August 1945, and from there returned to San Diego, California, 29 August.