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HMCS Dunver (K03)

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HMCS Dunver
History
Canada
NameDunver
NamesakeVerdun, Quebec
OperatorRoyal Canadian Navy
OrderedOctober 1941
BuilderMorton Engineering & Dry Dock Co., Quebec City
Laid down5 May 1942
Launched10 November 1942
Commissioned11 September 1943
Decommissioned23 January 1946
Identificationpennant number: K 03
Honours and
awards
Atlantic 1943-45[1]
FateSunk as breakwater 1948
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 Dunver was a River-class frigate that served with the Royal Canadian Navy during the Second World War. She served primarily as a convoy escort in the Battle of the Atlantic. She was named for Verdun, Quebec. Her name was altered to prevent confusion with other Allied warships named Verdun.[2]

Dunver was ordered as Verdun[Note 1][3][4] in October 1941 as part of the 1942–1943 River-class building program.[2][5] She was laid down on 5 May 1942 by Morton Engineering & Dry Dock Co. at Quebec City and launched 10 November later that year.[5] At some point during 1942, her name was changed to Dunver.[4] She was commissioned into the Royal Canadian Navy on 11 December 1943 at Quebec City.[2]

Discover more about HMCS Dunver (K03) related topics

River-class frigate

River-class frigate

The River class was a class of 151 frigates launched between 1941 and 1944 for use as anti-submarine convoy escorts in the North Atlantic. The majority served with the Royal Navy and Royal Canadian Navy (RCN), with some serving in the other Allied navies: the Royal Australian Navy (RAN), the Free French Naval Forces, the Royal Netherlands Navy and, post-war, the South African Navy.

Royal Canadian Navy

Royal Canadian Navy

The Royal Canadian Navy is the naval force of Canada. The RCN is one of three environmental commands within the Canadian Armed Forces. As of 2021, the RCN operates 12 frigates, four attack submarines, 12 coastal defence vessels, eight patrol class training vessels, two offshore patrol vessels, and several auxiliary vessels. The RCN consists of 8,570 Regular Force and 4,111 Primary Reserve sailors, supported by 3,800 civilians. Vice-Admiral Angus Topshee is the current commander of the Royal Canadian Navy and chief of the Naval Staff.

Battle of the Atlantic

Battle of the Atlantic

The Battle of the Atlantic, the longest continuous military campaign in World War II, ran from 1939 to the defeat of Nazi Germany in 1945, covering a major part of the naval history of World War II. At its core was the Allied naval blockade of Germany, announced the day after the declaration of war, and Germany's subsequent counter-blockade. The campaign peaked from mid-1940 through to the end of 1943.

Verdun, Quebec

Verdun, Quebec

Verdun is a borough (arrondissement) of the city of Montreal, Quebec, located in the southwestern part of the island.

Morton Engineering and Dry Dock Company

Morton Engineering and Dry Dock Company

Morton Engineering and Dry Dock Company was a shipbuilding company from Quebec City, Quebec. It was located in the Lower Town area of the city, along the Saint-Charles River. Founded in 1858, the shipyard stayed in operation until 1949, when it constructed its last ship. It built ships for the Royal Navy and Royal Canadian Navy during both world wars. In 1947, the company was renamed St. Lawrence Metal and Marine Works.

Quebec City

Quebec City

Quebec City, officially Québec, is the capital city of the Canadian province of Quebec. As of July 2021, the city had a population of 549,459, and the metropolitan area had a population of 839,311. It is the eleventh-largest city and the seventh-largest metropolitan area in Canada. It is also the second-largest city in the province after Montreal. It has a humid continental climate with warm summers coupled with cold and snowy winters.

Background

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.[6] The name "frigate" was suggested by Vice-Admiral Percy Nelles of the Royal Canadian Navy and was adopted later that year.[7]

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.[7] 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.[6] 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.[7] 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.[6]

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.[6]

Canada originally ordered the construction of 33 frigates in October 1941.[6][7] 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.[7] In all Canada ordered the construction of 60 frigates including ten for the Royal Navy that transferred two to the United States Navy.[6]

Discover more about Background related topics

River-class frigate

River-class frigate

The River class was a class of 151 frigates launched between 1941 and 1944 for use as anti-submarine convoy escorts in the North Atlantic. The majority served with the Royal Navy and Royal Canadian Navy (RCN), with some serving in the other Allied navies: the Royal Australian Navy (RAN), the Free French Naval Forces, the Royal Netherlands Navy and, post-war, the South African Navy.

Royal Navy

Royal Navy

The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against France. The modern Royal Navy traces its origins to the early 16th century; the oldest of the UK's armed services, it is consequently known as the Senior Service.

Flower-class corvette

Flower-class corvette

The Flower-class corvette was a British class of 294 corvettes used during World War II by the Allied navies particularly as anti-submarine convoy escorts in the Battle of the Atlantic. Royal Navy ships of this class were named after flowers.

United Kingdom

United Kingdom

The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and Northern Ireland. The United Kingdom includes the island of Great Britain, the north-eastern part of the island of Ireland, and many smaller islands within the British Isles. Northern Ireland shares a land border with the Republic of Ireland; otherwise, the United Kingdom is surrounded by the Atlantic Ocean, the North Sea, the English Channel, the Celtic Sea and the Irish Sea. The total area of the United Kingdom is 242,495 square kilometres (93,628 sq mi), with an estimated 2020 population of more than 67 million people.

HMCS Valleyfield (K329)

HMCS Valleyfield (K329)

HMCS Valleyfield was a River-class frigate that served with the Royal Canadian Navy during the Second World War. She served primarily as a convoy escort in the Battle of the Atlantic. She was torpedoed and sunk in May 1944, the only River-class frigate lost by the RCN. She was named for Salaberry-de-Valleyfield, Quebec.

Hedgehog (weapon)

Hedgehog (weapon)

The Hedgehog was a forward-throwing anti-submarine weapon that was used primarily during the Second World War. The device, which was developed by the Royal Navy, fired up to 24 spigot mortars ahead of a ship when attacking a U-boat. It was deployed on convoy escort warships such as destroyers and corvettes to supplement the depth charges.

Great Lakes

Great Lakes

The Great Lakes, also called the Great Lakes of North America, are a series of large interconnected freshwater lakes in the mid-east region of North America that connect to the Atlantic Ocean via the Saint Lawrence River. There are five lakes, which are Superior, Michigan, Huron, Erie, and Ontario and are in general on or near the Canada–United States border. Hydrologically, lakes Michigan and Huron are a single body joined at the Straits of Mackinac. The Great Lakes Waterway enables modern travel and shipping by water among the lakes.

St. Lawrence River

St. Lawrence River

The St. Lawrence River is a large river in the middle latitudes of North America. Its headwaters begin flowing from Lake Ontario in a roughly northeasterly direction, into the Gulf of St. Lawrence, connecting the American Great Lakes to the North Atlantic Ocean, and forming the primary drainage outflow of the Great Lakes Basin. The river traverses the Canadian provinces of Ontario and Quebec, as well as the U.S. state of New York, and demarcates part of the international boundary between Canada and the United States. It also provides the foundation for the commercial St. Lawrence Seaway.

United States Navy

United States Navy

The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage of its active battle fleet alone exceeding the next 13 navies combined, including 11 allies or partner nations of the United States as of 2015. It has the highest combined battle fleet tonnage and the world's largest aircraft carrier fleet, with eleven in service, two new carriers under construction, and five other carriers planned. With 336,978 personnel on active duty and 101,583 in the Ready Reserve, the United States Navy is the third largest of the United States military service branches in terms of personnel. It has 290 deployable combat vessels and more than 2,623 operational aircraft as of June 2019.

War service

After commissioning, Dunver escorted a Sydney - Halifax convoy while making her way to Halifax. The vessel performed her workups at Pictou. Following that she was assigned to the Mid-Ocean Escort Force escort group C-5. In July 1944, she was the Senior Officer's Ship while escorting the largest convoy of the war, HX 300. She remained as a trans-Atlantic convoy escort until October 1944.[2]

Following the war, HMCS Hespeler and Dunver were credited with sinking U-484. That has since been credited to other ships by some sources[8][9] while other sources continue to give these ships credit.[10]

In October 1944, Dunver returned to Canada to undergo a refit at Pictou. This was completed on 27 December 1944. After working up she joined escort group EG 27 based out of Halifax. She remained with this group until the end of hostilities in Europe. In June 1945 she was sent to the west coast to undergo a tropicalization refit for possible service in the southern Pacific Ocean.[2] This meant adding refrigeration and water-cooling capabilities and changing the camouflage.[11] However the refit was not completed, being cancelled in August due to the surrender of Japan.[2]

Dunver was laid up at Esquimalt, British Columbia until being paid off 23 January 1946.[2] She remained there until 1948 when she was sold to Wagner Stein & Greene to be stripped. The remaining hulk was then sent to Royston, British Columbia to be used as part of the breakwater.[12]

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Sydney, Nova Scotia

Sydney, Nova Scotia

Sydney is a former city and urban community on the east coast of Cape Breton Island in Nova Scotia, Canada within the Cape Breton Regional Municipality. Sydney was founded in 1785 by the British, was incorporated as a city in 1904, and dissolved on 1 August 1995, when it was amalgamated into the regional municipality.

Halifax, Nova Scotia

Halifax, Nova Scotia

Halifax is the capital and largest municipality of the Canadian province of Nova Scotia, and the largest municipality in Atlantic Canada. Halifax is one of Canada's fastest growing municipalities, and as of 2022, it is estimated that the CMA population of Halifax was 480,582,with 348,634 people in its urban area. The regional municipality consists of four former municipalities that were amalgamated in 1996: Halifax, Dartmouth, Bedford, and Halifax County.

Mid-Ocean Escort Force

Mid-Ocean Escort Force

Mid-Ocean Escort Force (MOEF) referred to the organisation of anti-submarine escorts for World War II trade convoys between Canada and Newfoundland, and the British Isles. The allocation of United States, British, and Canadian escorts to these convoys reflected preferences of the United States upon their declaration of war, and the organisation persisted through the winter of 1942–43 despite withdrawal of United States ships from the escort groups. By the summer of 1943, United States Atlantic escorts were focused on the faster CU convoys and the UG convoys between Chesapeake Bay and the Mediterranean Sea; and only British and Canadian escorts remained on the HX, SC and ON convoys.

Convoy HX 300

Convoy HX 300

Convoy HX 300 was the 300th of the numbered series of World War II HX convoys of merchant ships from Halifax to Liverpool. It started its journey on 17 July 1944 and was the largest convoy of the war, comprising 166 ships.

German submarine U-484

German submarine U-484

German submarine U-484 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

Royston, British Columbia

Royston, British Columbia

Royston is an unincorporated community that is part of the greater Comox Valley region, 100 km northwest of Nanaimo on Vancouver Island, in British Columbia, Canada. With a population of just over 1,500, it is next to the Trent River, across the harbour from Comox, and lies on the southeast municipal boundary of Courtenay.

Source: "HMCS Dunver (K03)", Wikipedia, Wikimedia Foundation, (2023, January 25th), https://en.wikipedia.org/wiki/HMCS_Dunver_(K03).

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References
Notes
  1. ^ Referred to as Verdun of Canada in some sources.
Footnotes
  1. ^ "Battle Honours". Britain's Navy. Retrieved 23 May 2014.
  2. ^ a b c d e f g Macpherson, Ken; Burgess, John (1981). The ships of Canada's naval forces 1910–1981 : a complete pictorial history of Canadian warships. Toronto: Collins. ISBN 0-00-216856-1.
  3. ^ Lenton, H.T.; Colledge, J.J. (1968). British and Dominion Warships of World War II. New York: Doubleday and Company Inc. p. 232.
  4. ^ a b 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.
  5. ^ a b Helgason, Guðmundur. "HMCS Dunver (K 03)". German U-boats of WWII - uboat.net. Retrieved 23 May 2014.
  6. ^ a b c d e f "Fact Sheet No. 21 – Canadian River Class Frigates". Retrieved 23 May 2014.
  7. ^ a b c d e Macpherson, Ken (1989). Frigates of the Royal Canadian Navy 1943–1974. Lewiston, New York: Vanwell Publishing. pp. 6–7, 15. ISBN 0-920277-22-5.
  8. ^ Kemp, Paul (1997). U-Boats Destroyed: German Submarine Losses in the World Wars. Arms & Armour. p. 217. ISBN 1-85409-515-3.
  9. ^ Helgason, Guðmundur. "U 484". German U-boats of WWII - uboat.net. Retrieved 23 May 2014.
  10. ^ Macpherson, Ken; Barrie, Ron (2002). Warships of Canada's Naval Forces 1910-2002. St. Catharines: Vanwell Publishing Limited. p. 70. ISBN 1-55125-072-1.
  11. ^ Paterson, T.W. (15 April 2011). "Gallant HMCS Prince Rupert served on the 'Newfie-Derry' run". Cowichan Valley Citizen. Archived from the original on 13 April 2014. Retrieved 23 May 2014.
  12. ^ John Pollack; Rick James; James P. Delgado, eds. (31 August 2011). "A Reconnaissance Survey of the Ships of the Royston Breakwater, Vancouver Island, British Columbia, Canada" (PDF). Institute of Nautical Archaeology. p. 38. Retrieved 23 May 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 0-00-216856-1
External links

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