. . . . . . "Buttress was laid down as Patrol Craft Escort USS PCE-878 on 11 May 1943 at Portland, Oregon, by the Albina Engine & Machine Works; launched on 26 August 1943; and commissioned on 13 March 1944."@en . . . "--05-11"^^ . . . . "Buttress was laid down as Patrol Craft Escort USS PCE-878 on 11 May 1943 at Portland, Oregon, by the Albina Engine & Machine Works; launched on 26 August 1943; and commissioned on 13 March 1944."@en . . . . "USS Buttress (ACM-4)"@en . .