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HMCS Prestonian (K662)

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HMCS Prestonian (K662)
Prestoni
HMCS Prestonian at launch
Career (Canada) Canadian Blue Ensign 1921-1957
Name: HMCS Prestonian
Namesake: Preston, Ontario
Operator: Royal Canadian Navy
Ordered: 1 February 1943
Builder: Davie Shipbuilding and Repairing Co. Ltd., Lauzon, Quebec
Laid down: 20 July 1943
Launched: 22 June 1944
Commissioned: 13 September 1944
Recommissioned: 22 August 1953
Decommissioned: 9 November 1945
Out of service: 24 April 1956
Reclassified: Prestonian-class frigate 1953
Identification: 1944–1945 – K 662;1953–1956 FFE 307
Fate: loaned to Norway 1956, sold outright 1959.
Career (Norway) Flag of Norway, state
Name: HNoMS Troll
Namesake: The Norse mythological creature Troll
Operator: Royal Norwegian Navy
Acquired: loaned 24 April 1956; purchased 1959
Commissioned: 1956
Decommissioned: 1972
Renamed: Horten (1965)
Reclassified: submarine depot ship (1965)
Identification: F314 as Troll
Fate: sold 1972
General characteristics
Class & type: River-class frigate
Displacement: 1,445 long tons (1,468 t; 1,618 short tons)
2,110 long tons (2,140 t; 2,360 short tons) (deep load)
Length: 283 ft (86.26 m) p/p
301.25 ft (91.82 m)o/a
Beam: 36.5 ft (11.13 m)
Draught: 9 ft (2.74 m); 13 ft (3.96 m) (deep load)
Propulsion: 2 x Admiralty 3-drum boilers, 2 shafts, reciprocating vertical triple expansion, 5,500 ihp (4,100 kW)
Speed: 20 knots (37.0 km/h)
20.5 knots (38.0 km/h) (turbine ships)
Range: 646 long tons (656 t; 724 short tons) oil fuel; 7,500 nautical miles (13,890 km) at 15 knots (27.8 km/h)
Complement: 157
Armament:
  • 2 x QF 4 in (102 mm) /45 Mk. XVI on twin mount HA/LA Mk.XIX
  • 1 x QF 12 pdr (3 in / 76 mm) 12 cwt /50 Mk. V on mounting HA/LA Mk.IX (not all ships)
  • 8 x 20 mm QF Oerlikon A/A on twin mounts Mk.V
  • 1 x Hedgehog 24 spigot A/S projector
  • up to 150 depth charges

HMCS Prestonian was a River-class frigate that served with the Royal Canadian Navy during the Second World War and as a Prestonian-class frigate from 1953–1956. She saw action primarily as a convoy escort. She was named for Preston, Ontario, however due to possible confusion with HMS Preston, her name was altered.[1] In 1956 she began service with the Royal Norwegian Navy as Troll.

Prestonian was ordered on 1 February 1943 as part of the 1943–1944 River-class building program.[1][2] She was laid down as Beauharnois[3] on 20 July 1943 by Davie Shipbuilding and Repairing Co. Ltd. at Lauzon, Quebec and launched 22 June 1944.[2] Her name was changed to Prestonian and she was commissioned on 13 September 1944 at Quebec City.[1]

Background[]

Main article: River-class frigate

The River-class frigate was designed by William Reed of Smith's Dock Company of South Bank-on-Tees. Originally called a "twin-screw corvette", its purpose was to improve on the convoy escort classes in service with the Royal Navy at the time, including the Flower-class corvette. The first orders were placed by the Royal Navy in 1940 and the vessels were named for rivers in the United Kingdom, giving name to the class. In Canada they were named for towns and cities though they kept the same designation.[4] The name "frigate" was suggested by Vice-Admiral Percy Nelles of the Royal Canadian Navy and was adopted later that year.[5]

Improvements over the corvette design included improved accommodation which was markedly better. The twin engines gave only three more knots of speed but extended the range of the ship to nearly double that of a corvette at 7,200 metres (7.2 km) at 12 knots.[5] Among other lessons applied to the design was an armament package better designed to combat U-boats including a twin 4-inch mount forward and 12-pounder aft.[4] 15 Canadian frigates were initially fitted with a single 4-inch gun forward but with the exception of the HMCS Valleyfield, they were all eventually upgraded to the double mount.[5] For underwater targets, the River-class frigate was equipped with a Hedgehog anti-submarine mortar and depth charge rails aft and four side-mounted throwers.[4]

River-class frigates were the first Royal Canadian Navy warships to carry the 147B Sword horizontal fan echo sonar transmitter in addition to the irregular ASDIC. This allowed the ship to maintain contact with targets even while firing unless a target was struck. Improved radar and direction-finding equipment improved the RCN's ability to find and track enemy submarines over the previous classes.[4]

Canada originally ordered the construction of 33 frigates in October 1941.[4][5] The design was too big for the shipyards on the Great Lakes so all the frigates built in Canada were built in dockyards along the west coast or along the St. Lawrence River.[5] In all Canada ordered the construction of 60 frigates including ten for the Royal Navy that transferred two to the United States Navy.[4]

War service[]

Due to her late entry into the Second World War, Prestonian did not see much action. Upon arriving at Halifax, she underwent major repairs and it was not until January 1945 that she began working up at Bermuda. After she returned she was assigned to EG 28, a local convoy escort group working out of Halifax. She remained with this unit until the end of the war in Europe. In preparation for service in the Pacific Ocean, Prestonian began a tropicalization refit at Halifax completing on 20 August 1945. However the plans to send her to the Pacific had been cancelled and she was paid off 9 November and sold to Marine Industies Ltd.[1][2]

Postwar service[]

Prestonian was reacquired by the RCN to undergo conversion to a Prestonian-class ocean escort as part of the need to expand the anti-submarine force within the navy. This meant a flush-decked appearance aft, with a larger bridge and taller funnel. Her hull forward was strengthened against ice and the quarterdeck was enclosed to contain two Squid anti-submarine mortars.[6] As the first ship to complete the conversion, she gave her name to the new class. She was recommissioned 22 August 1953 with pennant 307.[2] She served three years with the RCN in her new role before being paid off on 24 April 1956 and loaned to the Royal Norwegian Navy.[1][2]

Royal Norwegian Navy[]

Prestonian was loaned to the Royal Norwegian Navy in 1956 and renamed HNoMS Troll.[1][2] She was employed primarily for fishery protection duties.[6] In 1965 she was reclassified as a submarine depot ship and renamed HNoMS Horten. She served in this capacity until 1972 when she was discarded.[1]

References[]

Notes
  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Macpherson, Ken; Burgess, John (1981). The ships of Canada's naval forces 1910–1981 : a complete pictorial history of Canadian warships. Toronto: Collins. ISBN 0-00216-856-1. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 "HMCS Prestonian (K 662)". uboat.net. http://uboat.net/allies/warships/ship/209.html. Retrieved 24 March 2014. 
  3. ↑ Lenton, H.T.; Colledge, J.J. (1968). British and Dominion Warships of World War II. New York: Doubleday and Company Inc.. p. 230. 
  4. ↑ 4.0 4.1 4.2 4.3 4.4 4.5 "Fact Sheet No. 21 – Canadian River Class Frigates". https://www.friends-amis.org/index.php/en/document-repository/english/fact-sheets/44-canadian-river-class-frigate-1/file. Retrieved 3 April 2014. 
  5. ↑ 5.0 5.1 5.2 5.3 5.4 Macpherson, Ken (1989). Frigates of the Royal Canadian Navy 1943–1974. Lewiston, New York: Vanwell Publishing. pp. 6–7, 15. ISBN 0920277225. 
  6. ↑ 6.0 6.1 Raymond V.B. Blackman, ed (1958). Jane's Fighting Ships 1958–59. New York: McGraw-Hill Book Company, Inc.. p. 77. 
References

External links[]

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Naval Ensign of the United Kingdom Royal Canadian Navy
Flag of Norway, state Royal Norwegian Navy
  • Draug (ex-Penetang)
  • Garm / Valkyrien (ex-Toronto)
  • Troll / Horten (ex-Prestonian)
  • Preceded by: River class
  • Followed by: St. Laurent-class destroyers



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