HMCS West York was a Flower-class corvette of the Royal Canadian Navy that served during the Second World War, primarily in convoy escort duties across the Atlantic. Built by Midland Shipyards Ltd. in Midland, Ontario, she was laid down on 23 July 1943, launched on 25 January 1944, and commissioned on 6 October 1944 at Collingwood. As part of the 1943-44 Increased Endurance Flower-class program, West York featured modifications from earlier designs, notably replacing the 2-pounder anti-aircraft gun with twin and single 20-mm anti-aircraft guns, enhancing her defensive capabilities. The vessel’s specifications aligned with typical Flower-class corvettes, which were designed for open-sea escort and convoy protection. She arrived at Halifax in November 1944, then proceeded to Bermuda for work-up exercises. In February 1945, she joined the Mid-Ocean Escort Force escort group EG C-5 at St. John’s and made three transatlantic convoy crossings, including escorting convoy HX 338 and later ON 305 at the end of May 1945, marking her active wartime service. West York was paid off on 9 July 1945 and laid up in Sorel, Quebec. She was sold into mercantile service as SS West York, during which she was involved in towing operations. She notably towed the decommissioned HMCS Assiniboine, which wrecked off Prince Edward Island after the towline parted in November 1945. Subsequently, she underwent significant modifications: her steam reciprocating engine was replaced with diesel power, and she sailed under various registries, including Moroccan (as Moulay Bouchaib), Italian (as Espresso), and Canadian (as Federal Express). Her maritime history ended dramatically in 1960 when, moored in Montreal, she was struck by the Swedish Polaris, holed, and sank within 30 minutes. The after part of the ship was later raised and scrapped, marking the end of her extensive service life. HMCS West York’s career reflects the versatility and adaptability of Flower-class corvettes, transitioning from wartime escorts to commercial vessels before a tragic maritime accident concluded her story.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.