Канадский корвет класса "Цветок" HMCS Kitchener во Второй мировой войне.

Flower class corvette

HMCS Kitchener was a Royal Canadian Navy revised which took part in convoy escort duties during the Second World War. She fought primarily in the Battle of the Atlantic. She was named for Kitchener, Ontario. The vessel was originally named HMCS Vancouver but was renamed in November 1941 before the ship was launched.

Flower class corvettes like Kitchener 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.

Kitchener was ordered as part of the Revised 1940 41 Flower class building program. This revised program radically changed the look of the Flower class corvette. The ships of this program kept the water tube boilers of the initial 1940 41 program, but now they were housed in separate compartments for safety. The fo'c'sle was extended, which allowed more space for berths for the crew, leading to an expansion of the crew. The bow had increased flare for better control in heavy seas. The revised Flowers of the RCN received an additional two depth charge throwers fitted amidships and more depth charges. They also came with heavier secondary armament with 20 millimetre anti aircraft guns carried on the extended bridge wings. All this led to an increase in displacement, draught and length. During her career, she had one significant refit, taking place at Liverpool, Nova Scotia from October 1943 until 28 January 1944.

After arriving on 16 July 1942 at Halifax Kitchener spent the next six weeks at Pictou, Nova Scotia working up. In September she was briefly assigned to the Western Local Escort Force (WLEF) before being reassigned as an escort for Operation Torch, the Allied invasion of North Africa. She sailed to Derry, arriving on 3 November and spent the next few months escorting convoys between the UK and the Mediterranean before returning to Canada in April 1943 as an escort for convoy ONS 2.