Originally classified as a "coastal minesweeper," AMc-132, Capable was reclassified as a "minesweeper," AM-155, on 21 February 1942. She was launched on 16 November 1942 at Portland, Oregon, by Willamette Iron and Steel Works and commissioned on 5 December 1943 with Lieutenant Commander W. C. Kunz, USNR, in command.