When did the USS YMS 330 minesweeper sail into Nagasaki harbor after the bombs were dropped?

The USS YMS-330 minesweeper sailed into Nagasaki harbor on September 20, 1945, after the atomic bomb was dropped on the city on August 9, 1945. This operation was part of the post-war efforts to assess damage and clear the harbor for shipping and recovery operations. The arrival of the minesweeper marked an important step in the U.S. Navy's efforts to restore normalcy in the region following the end of World War II.