HMCS Armentières was one of twelve Battle-class naval trawlers used by the Royal Canadian Navy (RCN). Armentières entered service in 1918 near the end of the First World War on the Atlantic coast of Canada. Following the war, the ship was transferred to the Department of Marine and Fisheries for a short period before reverting to RCN service in 1923 on the Pacific coast of Canada. The ship sank in 1925, was raised and re-entered service, remaining with the fleet through the Second World War as an examination vessel at Prince Rupert, British Columbia. After the end of the war, the vessel entered mercantile service becoming A.G. Garrish in 1947, later renamed Arctic Rover in 1958, Laforce in 1962 and Polaris in 1973. The ship's registry was deleted in 1991.