History
Canada
Name	Kapuskasing
Namesake	Kapuskasing, Ontario
Ordered	12 December 1941
Builder	Port Arthur Shipbuilding Co. Ltd., Port Arthur
Laid down	19 December 1942[1]
Launched	22 July 1943
Commissioned	17 August 1944
Decommissioned	27 March 1946
Identification	pennant number: J236
Recommissioned	1949
Decommissioned	1972
Identification	pennant number: 171
Honors and awards	Atlantic, 1944–1945[2][3]
Fate	Expended as target 1978
Notes	Colours: White and dark green[3]
Badge	Vert, shakefork couped, barry wavy argent and azure[3][4]
General characteristics
Class and type	Algerine-class minesweeper
Displacement	1,030 long tons (1,047 t) (standard) 1,325 long tons (1,346 t) (deep)
Length	225 ft (69 m) o/a
Beam	35 ft 6 in (10.82 m)
Draught	12.25 ft 6 in (3.89 m)
Installed power	2 × Admiralty 3-drum boilers 2,400 ihp (1,800 kW)
Propulsion	2 shafts 2 vertical triple-expansion steam engines
Speed	16.5 knots (30.6 km/h; 19.0 mph)
Range	5,000 nmi (9,300 km; 5,800 mi) at 10 knots (19 km/h; 12 mph)
Complement	85
Armament	1 × QF 4 in (102 mm) Mk V anti-aircraft gun 4 × twin Oerlikon 20 mm cannon 1 × Hedgehog

HMCS Kapuskasing was an Algerine-class minesweeper that served in the Royal Canadian Navy during the Second World War. The vessel was primarily used as a convoy escort in the Battle of the Atlantic. Following the war she saw service as a hydrographic survey ship with the Department of Mines. She was named for Kapuskasing, Ontario.

The reciprocating group displaced 1,010–1,030 long tons (1,030–1,050 t) at standard load and 1,305–1,325 long tons (1,326–1,346 t) at deep load The ships measured 225 feet (68.6 m) long overall with a beam of 35 feet 6 inches (10.8 m). They had a draught of 12 feet 3 inches (3.7 m). The ships' complement consisted of 85 officers and ratings.^[5]

The reciprocating ships had two vertical triple-expansion steam engines, each driving one shaft, using steam provided by two Admiralty three-drum boilers. The engines produced a total of 2,400 indicated horsepower (1,800 kW) and gave a maximum speed of 16.5 knots (30.6 km/h; 19.0 mph). They carried a maximum of 660 long tons (671 t) of fuel oil that gave them a range of 5,000 nautical miles (9,300 km; 5,800 mi) at 10 knots (19 km/h; 12 mph).^[5]

The Algerine class was armed with a QF 4 in (102 mm) Mk V anti-aircraft gun^[6] and four twin-gun mounts for Oerlikon 20 mm cannon. The latter guns were in short supply when the first ships were being completed and they often got a proportion of single mounts. By 1944, single-barrel Bofors 40 mm mounts began replacing the twin 20 mm mounts on a one for one basis. All of the ships were fitted for four throwers and two rails for depth charges. Many Canadian ships omitted their sweeping gear in exchange for a 24-barrel Hedgehog spigot mortar and a stowage capacity for 90+ depth charges.^[5]

Kapuskasing was ordered on 12 December 1941.^[7] The ship was laid down on 19 December 1942 by Port Arthur Shipbuilding Co. Ltd. at Port Arthur, Ontario and launched 22 July 1943.^[7][8] The vessel was commissioned into the Royal Canadian Navy on 17 August 1944 at Port Arthur, with the pennant J326.^[8]

After commissioning, Kapuskasing was sent to Bermuda to work up. Upon the vessel's return to Canadian waters, she was assigned to the Western Escort Force as Senior Officer's Ship of escort group W-1. As Senior Officer Ship, the commander of the escort would be aboard her during convoy missions.^[9] Primarily used as a convoy escort, the ship remained with the group until the end of hostilities in the Atlantic Ocean. The group was disbanded in June 1945 and she was placed in maintenance reserve at Sydney, Nova Scotia.^[8]

In November 1945, Kapuskasing underwent a refit at Halifax and upon its completion, was paid off into the reserve on 27 March 1946.^[8]

In 1949, Kapuskasing was recommissioned and was assigned pennant 171. The vessel was loaned to the Department of Mines and Technical Surveys for use as a hydrographic survey platform. The ship was returned to the Royal Canadian Navy in 1972. On 3 October 1978, she was taken to sea and sunk as a naval target.^[8]

• List of ships of the Canadian Navy

• Arbuckle, J. Graeme (1987). Badges of the Canadian Navy. Halifax, Nova Scotia: Nimbus Publishing. ISBN 0-920852-49-1.
• Burn, Alan (1999). The Fighting Commodores: The Convoy Commanders in the Second World War. London: Leo Cooper. ISBN 9780850525045.
• Chesneau, Roger, ed. (1980). Conway's All the World's Fighting Ships 1922–1946. Greenwich, UK: Conway Maritime Press. ISBN 0-85177-146-7.
• Colledge, J. J.; Warlow, Ben (2006) [1969]. Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8.
• Lenton, H. T. (1998). British & Empire Warships of the Second World War. Annapolis, Maryland: Naval Institute Press. ISBN 1-55750-048-7.
• Macpherson, Ken; Barrie, Ron (2002). The Ships of Canada's Naval Forces 1910–2002 (3 ed.). St. Catharines, Ontario: Vanwell Publishing. ISBN 1-55125-072-1.