USS Chatterer (AMS-40/YMS-415) was a YMS-1-class minesweeper of the YMS-135 subclass acquired by the U.S. Navy for the task of removing mines that had been placed in the water to prevent ships from passing.
Following the Japanese surrender, YMS-415 was active in mine clearance efforts in the vicinity of Japan.
Stationed in Japan when the Korean War began in June 1950, Chatterer soon joined the effort to search for and clear enemy mine fields in the combat zone.
She was retained in the Western Pacific after the conflict ended and was redesignated as a coastal minesweeper, Old, MSC(O)-40, 7 February 1955.
Chatterer was transferred to Japan 16 April 1955 as Yurishima (MSC 661); in the Japanese Maritime Self-Defense Force; Returned to the U.S. Navy in 1967; Sold for scrap 1 May 1968.