HMCS Hawkesbury (K415)

Not to be confused with HMAS Hawkesbury.

300px HMCS Hawkesbury
History
Canada
Name:	HMCS Hawkesbury
Namesake:	Hawkesbury, Ontario
Operator:	Royal Canadian Navy
Ordered:	April 1942
Builder:	Morton Engineering and Dry Dock Co., Quebec City
Laid down:	20 July 1943
Launched:	16 November 1943
Commissioned:	14 June 1944
Decommissioned:	10 June 1945
Identification:	Pennant number: K415
Honours and awards:	Atlantic 1944-45
Fate:	Sold for mercantile use
General characteristics
Class & type:	Flower-class corvette (modified)
Displacement:	1,015 long tons (1,031 t; 1,137 short tons)
Length:	208 ft (63.40 m)o/a
Beam:	33 ft (10.06 m)
Draught:	11 ft (3.35 m)
Propulsion:	single shaft 2 × oil fired water tube boilers 1 triple-expansion reciprocating steam engine 2,750 ihp (2,050 kW)
Speed:	16 knots (29.6 km/h)
Range:	7,400 nautical miles (13,705 km) at 10 knots (18.5 km/h)
Complement:	90
Sensors and processing systems:	1 Type 271 SW2C radar 1 Type 144 sonar
Armament:	1 × 4-inch (100 mm) QF Mk XIX naval gun 1 × 2-pounder Mk.VIII single "pom-pom" 2 × 20 mm Oerlikon single 1 × Hedgehog A/S mortar 4 × Mk.II depth charge throwers 2 × depth charge rails with 70 depth charges

HMCS Hawkesbury was a modified Flower-class corvette that served with 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 Hawkesbury, Ontario.

Background

Main article: Flower class corvette

Flower-class corvettes like Hawkesbury 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

Hawkesbury was ordered April 1942 as part of the 1942-43 modified Flower-class building programme. This programme was known as the Increased Endurance (IE). Many changes were made, all from lessons that had been learned in previous versions of the Flower-class. The bridge was made a full deck higher and built to naval standards instead of the more civilian-like bridges of previous versions. The platform for the 4-inch main gun was raised to minimize the amount of spray over it and to provide a better field of fire. It was also connected to the wheelhouse by a wide platform that was now the base for the Hedgehog anti-submarine mortar that this version was armed with. Along with the new Hedgehog, this version got the new QF 4-inch Mk XIX main gun, which was semi-automatic, used fixed ammunition and had the ability to elevate higher giving it an anti-aircraft ability.

Other superficial changes to this version include an upright funnel and pressurized boiler rooms which eliminated the need for hooded ventilators around the base of the funnel. This changes the silhouette of the corvette and made it more difficult for submariners to tell which way the corvette was laying.

Hawkesbury was laid down by Morton Engineering and Dry Dock Co. at Quebec City, Quebec 20 July 1943 and was launched 16 November 1943. She was commissioned into the Royal Canadian Navy 14 June 1944 at Quebec. Due to her late arrival into the war Hawkesbury never had a refit.

War service

After workups Hawkesbury joined the Mid-Ocean Escort Force as a trans-Atlantic convoy escort. She was assigned to escort group C-7 in September 1944. She served with the group for the rest of the war. She returned to Canada in June 1945.

Post-war service

Hawkesbury was paid off at Sydney, Nova Scotia 10 July 1945. She was transferred to the War Assets Corporation and laid up at Sorel, Quebec. She was sold for mercantile conversion and reappeared in 1950 as Campuchea under a Cambodian flag. In 1956 she was broken up at Hong Kong. The ship's bell that was used during her service with the Royal Canadian Navy was donated to her namesake town of Hawkesbury as part of the Canadian Naval Centennial.