The Porte-class gate vessels were a class of five boom defence vessels built in the early 1950s and operated by the Royal Canadian Navy (RCN) and Canadian Forces (CF) during the Cold War. The class derived its name from the gates of the French fortifications of Québec and Louisbourg and was designed by the RCN as a replacement for World War I-era Battle-class trawlers used to operate anti-submarine booms during World War II. The Porte class were used primarily as training vessels during the Cold War.
The Porte class were designed with the possibility of commercial adoption of the design by the Canadian fishing industry. The gate vessels were planned for use as auxiliary vessels during peacetime.[1] The Porte class was of a trawler design, and were designed to operate the anti-submarine booms for harbour defence. They were also capable of being fitted for minelaying.[2]
The Porte class were 125 feet 6 inches (38.3 m) long with a beam of 26 feet 4 inches (8.0 m) and a draught of 13 feet 0 inches (4.0 m). They displaced 429 long tons (436 t) fully loaded and had an initial complement of 3 officers and 20 ratings.[2][3] The Porte class were powered one Fairbanks-Morse 6-cylinder diesel engine driving one shaft creating 600 brake horsepower (450 kW). This gave the vessels a maximum speed of 11 knots (20 km/h; 13 mph).[2][4] The vessels had a range of 4,000 nautical miles (7,400 km; 4,600 mi) at 10 knots (19 km/h; 12 mph). They were equipped with one Racal Decca navigation radar operating on the I band.[4] The ships were armed with one 40 mm gun placed forward.[5]
The first Porte-class vessel was ordered September 1949.[1]Porte Saint Jean and Porte Saint Louis were based at Halifax, Nova Scotia and Porte Dauphine, Porte Québec and Porte de la Reine at Esquimalt, British Columbia. From 1958 to 1974, Porte Dauphine was loaned to the Department of Transport (DOT) as an environmental research ship on the Great Lakes, before transferring to the West Coast via the Panama Canal.[3][8]Porte Dauphine was modified for DOT use, which involved the installation of a widened wheelhouse and a cafeteria.[9] The vessels were used to train naval reserve crews in key trades such as navigation, diesel mechanics, communications and logistics.[4][5]Porte Saint Jean and Porte Saint Louis began training on the Great Lakes in 1953, working with HMCS Star in Hamilton, Ontario. They sometimes travelled to Bermuda for training.[10] In 1973, Porte Saint Jean and Porte Saint Louis sailed into the eastern Arctic.[11] With the arrival of the Kingston-class coastal defence vessels in the mid-1990s, the Porte class was retired. Porte Dauphine was the first, discarded in December 1995, followed by Porte Saint Jean and Porte Saint Louis in March 1996 and Porte Québec and Porte de la Reine in December 1996.[12]
Citations
^ ab"Four Minesweepers, Gate Vessel Ordered". The Crowsnest. Vol. 1, no. 12. Ottawa: King's Printer. October 1949. p. 2.
Blackman, Raymond V. B., ed. (1953). Jane's Fighting Ships 1953–54. London: Sampson, Low and Marston. OCLC 913556389.
Gimblett, Richard H. & Hadley, Michael L., eds. (2010). Citizen Sailors: Chronicles of Canada's Naval Reserve. Toronto: Dundurn Press. ISBN978-1-55488-867-2.
Macpherson, Ken & Barrie, Ron (2002). The Ships of Canada's Naval Forces 1910–2002 (Third ed.). St. Catharines, Ontario: Vanwell Publishing. ISBN1-55125-072-1.
Sharpe, Richard, ed. (1990). Jane's Fighting Ships 1990–91 (93 ed.). Surrey, United Kingdom: Jane's Information Group. ISBN0-7106-0904-3.
January 25, 2023
porte, class, gate, vessel, were, class, five, boom, defence, vessels, built, early, 1950s, operated, royal, canadian, navy, canadian, forces, during, cold, class, derived, name, from, gates, french, fortifications, québec, louisbourg, designed, replacement, w. The Porte class gate vessels were a class of five boom defence vessels built in the early 1950s and operated by the Royal Canadian Navy RCN and Canadian Forces CF during the Cold War The class derived its name from the gates of the French fortifications of Quebec and Louisbourg and was designed by the RCN as a replacement for World War I era Battle class trawlers used to operate anti submarine booms during World War II The Porte class were used primarily as training vessels during the Cold War Class overviewNamePorte classOperators Royal Canadian Navy Canadian Maritime CommandPreceded byBattle classIn commission5 December 1951 19 December 1996Completed5Scrapped5General characteristicsTypeBoom defence vesselDisplacement429 tonsLength125 ft 6 in 38 3 m Beam26 ft 4 in 8 0 m Draught13 ft 4 0 m Propulsion1 diesel engine 1 shaft 600 bhp 450 kW Speed11 kn 20 km h Complementoriginally 3 officers 20 ratings later expanded to 5 officers 3 officers under training 30 ratingsSensors and processing systemsMechanical minesweeping equipment later removed Boom defence equipmentArmament1 40 mm Bofors single mount later removed Contents 1 Design and description 2 Ships 3 Service history 4 Citations 5 SourcesDesign and description EditThe Porte class were designed with the possibility of commercial adoption of the design by the Canadian fishing industry The gate vessels were planned for use as auxiliary vessels during peacetime 1 The Porte class was of a trawler design and were designed to operate the anti submarine booms for harbour defence They were also capable of being fitted for minelaying 2 The Porte class were 125 feet 6 inches 38 3 m long with a beam of 26 feet 4 inches 8 0 m and a draught of 13 feet 0 inches 4 0 m They displaced 429 long tons 436 t fully loaded and had an initial complement of 3 officers and 20 ratings 2 3 The Porte class were powered one Fairbanks Morse 6 cylinder diesel engine driving one shaft creating 600 brake horsepower 450 kW This gave the vessels a maximum speed of 11 knots 20 km h 13 mph 2 4 The vessels had a range of 4 000 nautical miles 7 400 km 4 600 mi at 10 knots 19 km h 12 mph They were equipped with one Racal Decca navigation radar operating on the I band 4 The ships were armed with one 40 mm gun placed forward 5 Ships EditPorte class construction data Ship Original pennant number Final pennant number Builder Laid down Launched Commissioned Paid off FatePorte Dauphine YMG 186 YNG 186 Pictou Foundry Co Pictou 15 May 1951 4 March 1952 10 December 1952 December 1995Porte de la Reine YMG 184 YNG 184 Victoria Machinery Depot Victoria 5 March 1951 28 December 1951 7 October 1952 19 December 1996 Broken up Seattle 2015 6 Porte Quebec YMG 185 YNG 185 Burrard Dry Dock Vancouver 15 February 1951 28 August 1951 19 September 1952 19 December 1996 Broken up Seattle 2015 7 Porte St Jean YMG 180 YNG 180 George T Davie amp Sons Lauzon 16 May 1950 22 November 1950 5 December 1951 31 March 1996Porte St Louis YMG 183 YNG 183 George T Davie amp Sons Lauzon 21 March 1951 23 July 1952 29 August 1952 31 March 1996Service history EditThe first Porte class vessel was ordered September 1949 1 Porte Saint Jean and Porte Saint Louis were based at Halifax Nova Scotia and Porte Dauphine Porte Quebec and Porte de la Reine at Esquimalt British Columbia From 1958 to 1974 Porte Dauphine was loaned to the Department of Transport DOT as an environmental research ship on the Great Lakes before transferring to the West Coast via the Panama Canal 3 8 Porte Dauphine was modified for DOT use which involved the installation of a widened wheelhouse and a cafeteria 9 The vessels were used to train naval reserve crews in key trades such as navigation diesel mechanics communications and logistics 4 5 Porte Saint Jean and Porte Saint Louis began training on the Great Lakes in 1953 working with HMCS Star in Hamilton Ontario They sometimes travelled to Bermuda for training 10 In 1973 Porte Saint Jean and Porte Saint Louis sailed into the eastern Arctic 11 With the arrival of the Kingston class coastal defence vessels in the mid 1990s the Porte class was retired Porte Dauphine was the first discarded in December 1995 followed by Porte Saint Jean and Porte Saint Louis in March 1996 and Porte Quebec and Porte de la Reine in December 1996 12 Citations Edit a b Four Minesweepers Gate Vessel Ordered The Crowsnest Vol 1 no 12 Ottawa King s Printer October 1949 p 2 a b c Blackman 1953 p 101 a b Macpherson amp Barrie 2002 p 284 a b c Sharpe 1990 p 84 a b Gimblett amp Hadley 2010 p 103 Porte de la Reine 6122917 Miramar Ship Index Retrieved 11 February 2018 Porte Quebec 6122918 Miramar Ship Index Retrieved 11 February 2018 Gimblett amp Hadley 2010 pp 103 114 Gimblett amp Hadley 2010 p 114 Gimblett amp Hadley 2010 pp 104 114 Gimblett amp Hadley 2010 p 116 Gimblett amp Hadley 2010 p 127 Sources EditBlackman Raymond V B ed 1953 Jane s Fighting Ships 1953 54 London Sampson Low and Marston OCLC 913556389 Gimblett Richard H amp Hadley Michael L eds 2010 Citizen Sailors Chronicles of Canada s Naval Reserve Toronto Dundurn Press ISBN 978 1 55488 867 2 Macpherson Ken amp Barrie Ron 2002 The Ships of Canada s Naval Forces 1910 2002 Third ed St Catharines Ontario Vanwell Publishing ISBN 1 55125 072 1 Sharpe Richard ed 1990 Jane s Fighting Ships 1990 91 93 ed Surrey United Kingdom Jane s Information Group ISBN 0 7106 0904 3 Retrieved from https en wikipedia org w index php title Porte class gate vessel amp oldid 1077266944, wikipedia, wiki, book, books, library,
