HMCS Coaticook

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HMCS Coaticook
History
Canada
NameCoaticook
Namesake
Coaticook, Quebec
OperatorRoyal Canadian Navy
Ordered1 February 1943
Builder
Lauzon
Yard number553
Laid down14 June 1943
Launched26 November 1943
Commissioned25 July 1944
Decommissioned29 November 1945
IdentificationPennant number:K 410
Honours and
awards		Atlantic 1944–1945,[1] Gulf of St. Lawrence 1944[2]
FateSold 1948, sank as breakwater; raised 1961 and scuttled 1962 at Race Rocks off Vancouver Island.
General characteristics
Class and typeRiver-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
Beam36.5 ft (11.13 m)
Draught9 ft (2.74 m); 13 ft (3.96 m) (deep load)
Propulsion2 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)
Range646 long tons (656 t; 724 short tons) oil fuel; 7,500 nautical miles (13,890 km) at 15 knots (27.8 km/h)
Complement157
Armament

HMCS Coaticook was a

Coaticook, Quebec
.

Coaticook was ordered on 1 February 1943 as part of the 1943–1944 River class building programme.

Lauzon, Quebec and launched 26 November 1943.[4] She was commissioned into the Royal Canadian Navy on 25 July 1944 at Quebec City.[3]

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

Percy Nelles of the Royal Canadian Navy and was adopted later that year.[6]

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 nautical miles (13,300 km) at 12 knots.

U-boats including a twin 4-inch mount forward and 12-pounder aft.[5] 15 Canadian frigates were initially fitted with a single 4-inch gun forward but with the exception of HMCS Valleyfield, they were all eventually upgraded to the double mount.[6] 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.[5]

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.[5]

Canada originally ordered the construction of 33 frigates in October 1941.[5][6] 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.[6] In all Canada ordered the construction of 60 frigates including ten for the Royal Navy that transferred two to the United States Navy.[5]

War service

Coaticook was sent in mid-September 1944 to

Esquimalt.[3] She was paid off into the reserve there on 29 November 1945.[3][4]

Postwar service

In 1948, Coaticook was sold for stripping and in 1949, she was sunk as a breakwater at Powell River in British Columbia to replace the floating breakwater that had been installed.[8] In 1961, the hull was refloated in an effort to tow it to Victoria, British Columbia to be broken up.[3] However en route, a storm arose and the hull suffered damage. The damage was considered significant enough to render the hull structurally unstable. The decision was made to scuttle it instead of continuing on to Victoria. Four cases of forcite, a gelatin dynamite, were placed throughout the ship.[8] The ship was sunk near Race Rocks, off Vancouver Island in February 1962.[3][8] Photos of the resulting explosion were taken and distributed through The Canadian Press.[8]

References

Notes
  1. ^ "Battle Honours". Britain's Navy. Retrieved 30 March 2014.
  2. ^ "Royal Canadian Warships that Participated in the Battle of the Gulf of St. Lawrence". Veterans Affairs Canada. Archived from the original on 27 September 2013. Retrieved 11 October 2018.
  3. ^
    ISBN 0-00216-856-1
    .
  4. ^ a b c "HMCS Coaticook (K 410)". uboat.net. Retrieved 30 March 2014.
  5. ^ a b c d e f "Fact Sheet No. 21 – Canadian River Class Frigates". Retrieved 3 April 2014.
  6. ^
    ISBN 0920277225
    .
  7. ^ McLean, Douglas M. (October 1993). "The Battle of Convoy BX-141" (PDF). The Northern Mariner. pp. 19–35.
  8. ^ a b c d MacFarlane, John M. (2011). "Capital Iron & Metals Ltd. – From Ship Breakers to Department Store". nauticapedia.ca. Retrieved 30 March 2014.
References
  • Macpherson, Ken; Burgess, John. The ships of Canada's naval forces 1910–1981 : a complete pictorial history of Canadian warships. Collins: Toronto, 1981.
    ISBN 0-00216-856-1
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