She was laid down on 12 August 1943 by the Gibbs Gas Engine Co., at Jacksonville, Florida, as Patrol Craft, Sweeper, PCS-1438; and was redesignated Auxiliary Motor Minesweeper YMS-470, on 27 September 1943.

She was towed to the Bethlehem Pacific Coast Corp. yard at San Francisco, California, where she was recommissioned on 8 November 1950.

In January 1954, Swan was reassigned to MinDiv 45 of the Atlantic Fleet and home ported at the Minecraft Base in Charleston, South Carolina.

She was redesignated MSC(O)-37 on 1 August 1955, and reported to the Florida Group, Atlantic Reserve Fleet for inactivation and decommissioning.

This article incorporates text from the public domain Dictionary of American Naval Fighting Ships.