HMS Ossory (J463)

History
United Kingdom
Name	HMS Ossory
Builder	Port Arthur Shipbuilding Co., Port Arthur
Laid down	20 November 1943
Launched	3 October 1944
Commissioned	29 September 1945
Identification	Pennant number J463
Fate	Scrapped 4 March 1959
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

HMS Ossory was a reciprocating engine-powered Algerine-class minesweeper built for the Royal Navy during the Second World War. She commissioned too late for service in the conflict, but was in service during the Cold War period. She was scrapped in 1959.

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.^[1]

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).^[1]

The Algerine class was armed with a QF 4 in (102 mm) Mk V anti-aircraft gun^[2] 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.^[1]

Ossory was laid down by the Port Arthur Shipbuilding Co., Thunder Bay, Ontario, on 20 November 1943 and was launched on 3 October 1944.^[3] She was completed on 29 September 1945.

Ossory commissioned too late for service in World War II, joining the 4th Minesweeping Flotilla in January 1946 and serving in the Fishery Protection Squadron from 1946–1947.^[4] She was reduced to reserve at Portsmouth in 1948.^[4]

Ossory was scrapped at Troon, Scotland from 4 March 1959.^[5]

• Blackman, Raymond V. B., ed. (1953). Jane's Fighting Ships 1953–54. New York: McGraw-Hill Book Company Inc.
• 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.
• Gardiner, Robert; Chesneau, Roger, eds. (1980). Conway's All the World's Fighting Ships 1922–1946. London: Conway Maritime Press. ISBN 0-85177-146-7.
• Lenton, H. T. (1998). British & Empire Warships of the Second World War. Annapolis, Maryland: Naval Institute Press. ISBN 1-55750-048-7.
• Worth, Jack (1984). British Warships Since 1945: Part 4: Minesweepers. Liskeard, UK: Maritime Books. ISBN 0-907771-12-2.

• HMS Ossory at uboat.net
• HMS Ossory at battleships-cruisers.co.uk