Porte-class gate vessel

Class overview
Name:	Porte
Operators:	Royal Canadian Navy ⁄ Canadian Maritime Command
In commission:	5 December 1951 – 19 December 1996
Completed:	5
Retired:	5
General characteristics
Type:	Boom defence vessel
Displacement:	429 tons
Length:	125.5 ft (38.3 m)
Beam:	26.3 ft (8.0 m)
Draught:	13 ft (4.0 m)
Speed:	11 kn (20 km/h)
Complement:	originally 3 officers, 20 ratings; later expanded to 5 officers, 3 officers under training, 30 ratings
Sensors and processing systems:	Mechanical minesweeping equipment (later removed) Boom defence equipment
Armament:	1 x 40mm Bofors single mount (later removed)

The Porte-class gate vessels were a class of boom defence vessel 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.

Ships

Ship	Original Pennant Number	Final Pennant Number	Builder	Laid Down	Launched	Commissioned	Paid Off	Fate
Porte Dauphine	YMG 186	YNG 186	Pictou Foundry Co., Pictou	15 May 1951	4 Mar 1952	10 Dec 1952	Dec 1995
Porte de la Reine	YMG 184	YNG 184	Victoria Machinery Depot, Victoria	5 Mar 1951	28 Dec 1951	7 Oct 1952	19 Dec 1996
Porte Québec	YMG 185	YNG 185	Burrard Dry Dock, Vancouver	15 Feb 1951	28 Aug 1951	19 Sep 1952	19 Dec 1996
Porte St. Jean	YMG 180	YNG 180	George T. Davie & Sons, Lauzon	16 May 1950	22 Nov 1950	5 Dec 1951	31 Mar 1996
Porte St. Louis	YMG 183	YNG 183	George T. Davie & Sons, Lauzon	21 Mar 1951	23 Jul 1952	29 Aug 1952	31 Mar 1996

References

• Gate Vessels - Radio Fit - Radio Research Paper
• Macpherson, Ken; Burgess, John (1994). The Ships of Canada's Naval Forces 1910-1993. St Catherines, Ont: Vanwell Publishing Limited. ISBN 0-920277-91-8.