HMCS Shawinigan was a Flower-class corvette that served with the Royal Canadian Navy during the Second World War.

[4][5][6] The "corvette" designation was created by the French as a class of small warships; the Royal Navy borrowed the term for a period but discontinued its use in 1877.

[10] Shawinigan was ordered 24 January 1940 as part of the 1939–1940 Flower-class building program and laid down on 4 June 1940 by Davie Shipbuilding & Repairing Co. Ltd. at Lauzon, Quebec.

[12] On 24 November 1944 Shawinigan and USCGC Sassafras escorted the ferry Burgeo from Sydney to Port aux Basques.

Keeping radio silence and without informing command of Shawinigan's lack of appearance, Burgeo made for Sydney unescorted.

[15] The Canadian public didn't learn about the loss until almost two weeks later, when on 7 December 1944, Angus L. Macdonald, the minister of defence for naval services, told the press.

[citation needed] Shawinigan's fate was ultimately confirmed following the surrender of U-1228 to United States forces at Portsmouth, New Hampshire on 17 May 1945.

Records from U-1228's commanding officer, Friedrich-Wilhelm Marienfeld, disclosed further details of the engagement, including that U-1228 fired a single T-5 GNAT torpedo at Shawinigan, striking the corvette in the stern.