 She was laid down as "Royal Mount" on 11 November 1943 by Davie Shipbuilding & Repairing Co. Ltd. at Lauzon and launched 28 April 1944.Her name was changed to "Buckingham" and she was commissioned on 2 November 1944 at Quebec City.The River-class frigate was designed by William Reed of Smith's Dock Company of South Bank-on-Tees.