HMCS Thiepval was one of twelve Battle-class naval trawlers used by the Royal Canadian Navy (RCN). After seeing service on Canada's east coast at the end of the First World War, Thiepval was transferred to the west coast, where she spent the remainder of her career. In 1924, Thiepval visited the Soviet Union and Japan as part of the support efforts for a round-the-world flight attempt. Thiepval struck a rock and sank off the British Columbia coast in 1930, and her wreck has since become a popular attraction for divers.

The Battle-class trawlers were a class of naval trawlers built for and used by the Royal Canadian Navy (RCN) during the First World War. Between the wars, some remained in RCN service, but most were transferred to the Department of Marine and Fisheries, where they performed a number of functions, including working as lightships and fisheries patrol vessels. During the Second World War, a number of these trawlers were re-acquired by the RCN, but all the navy's Battle-class trawlers were decommissioned soon after the war. A number of the class remained in civilian government and commercial service for years after the war, although most had been disposed of by the early 1960s.