HMCS Asbestos was a that served in the Royal Canadian Navy during the Second World War. She fought primarily in the Battle of the Atlantic as a convoy escort. She was named for Asbestos, Quebec. Background Flower-class corvettes like Asbestos serving with the Royal Canadian Navy during the Second World War were different from earlier and more traditional sail-driven corvettes. 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. During the hurried preparations for war in the late 1930s, Winston Churchill reactivated the corvette class, needing a name for smaller ships used in an escort capacity, in this case based on a whaling ship design. The generic name "flower" was used to designate the class of these ships, which – in the Royal Navy – were named after flowering plants. Corvettes commissioned by the Royal Canadian Navy during the Second World War were named after communities for the most part, to better represent the people who took part in building them. This idea was put forth by Admiral Percy W. Nelles. Sponsors were commonly associated with the community for which the ship was named. Royal Navy corvettes were designed as open sea escorts, while Canadian corvettes were developed for coastal auxiliary roles which was exemplified by their minesweeping gear. Eventually the Canadian corvettes would be modified to allow them to perform better on the open seas. Construction Asbestos followed the design of the modified Flower-class corvettes and was ordered June 1942 as part of the 1943-44 Flower class building program. The only significant difference is that the majority of the 43-44 program replaced the 2-pounder Mk.VIII single "pom-pom" anti-aircraft gun with 2 twin 20-mm and 2 single 20-mm anti-aircraft guns. She was laid down on 20 July 1943 by Morton Engineering & Dry Dock Co. at Quebec City, Quebec and launched on 22 November 1943. She was commissioned into the RCN on 16 June 1944 at Quebec City. War service Asbestos arrived at Halifax on 9 July before moving on to Bermuda for working up. Following working up she headed for St John's after being assigned to the Mid-Ocean Escort Force on 21 August. She joined convoy HXF.307 on 10 September as a member of Escort Group C-2. She continued on as a member of this group on convoy duties