USS Sagacity (AM-469/MSO-469) was an Agile-class minesweeper acquired by the U.S. Navy for the task of removing mines that had been placed in the water to prevent the safe passage of ships.

Sagacity (AM-469) was laid down on 6 October 1952 by the Luders Marine Construction Co., Stamford, Connecticut; launched on 20 February 1954; sponsored by Mrs. Loretta B. McCue; and commissioned on 20 January 1955.

Redesignated MSO-469 on 7 February, Sagacity completed shakedown training in May, then took up local operations out of her home port, Charleston, South Carolina.

Biennially deployed to the Mediterranean for duty with the U.S. 6th Fleet from that time until 1967, she was employed on projects for the Naval Mine Warfare School at Charleston, the Mine Defense Laboratory at Panama City, Florida, and the Naval Ordnance Test Facility at Fort Lauderdale, Florida, during her U.S. 2d Fleet duty.

In March 1970, she grounded at the entrance to Charleston harbor, causing extensive damage to her rudders, shafts, screws, keel, and hull.