USS Ruddy (AM-380) was an Auk-class minesweeper acquired by the U.S. Navy for the dangerous task of removing mines from minefields laid in the water to prevent ships from passing.

Ruddy was laid down on 24 February 1944 by the Gulf Shipbuilding Corp., Chickasaw, Alabama; launched 29 October 1944; sponsored by Mrs. John Zerolis; and commissioned 28 April 1945.

Arriving at Buckner Bay on 27 September, she escorted the Miiilicoma (AO-73) to Sasebo, Japan, destroying two Japanese mines with rifle fire en route.

Detached on 8 November, she provided courier service; supervised YMS operations; and carried freight between Okinawa and Sasebo until the new year.

At Bikini Atoll from 7 to 24 March, she supervised buoy-laying activities in preparation for Operation Crossroads, the July 1946 atomic tests; then continued on to the United States.

Fourteen days later, the truce went into effect; and, at the end of the month, the minesweeper was at Niigata, Japan, to participate in the Perry Expedition Centennial celebration.