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Upholder class

Patrol submarine

Upholder class submarine

All Upholder class submarines were bought by Canada for service as the Victoria class

Entered service 1990
Crew 53 men
Diving depth (operational) 300 m
Diving depth (maximum) 500 m
Dimensions and displacement
Length 70.3 m
Beam 7.6 m
Draught 5.5 m
Surfaced displacement 2 168 tons
Submerged displacement 2 455 tons
Propulsion and speed
Surfaced speed 12 knots
Submerged speed 20 knots
Nuclear reactors ?
Steam turbines ?
Diesel engines ?
Electric motors ?
Missiles ?
Torpedoes ?
Other ?


   To meet the requirement for a diesel-electric submarine type to succeed the Oberons in Royal Navy service, Vickers Shipbuilding and Engineering Ltd developed the Type 2400 or Upholder class. As in most new submarine classes, the emphasis was placed on standardization and automation to reduce manning requirements. The first of the class was ordered in 1983 and completed in June 1990, and three followed another three boats ordered in 1986 and completed in 1991-93. It had a first been planned to order 12 such boats, but this scheme was trimmed first to 10 and then nine before being curtailed at just four as part of the peace dividend at the end of the Cold War in the early 1990s.

   Also included in the design were advanced noise-attenuation features to reduce the radiated noise levels below those of the already very quiet Oberon class. There was also a reduction in the short time required to recharge the batteries to ensure a minimum exposure time of any part of the masts above the water. The armament fit includes a new positive discharge and fully automated weapon-handling system to avoid the stability problems at torpedo launch and the limitations that are sometimes made on the platform's speed and maneuverability.

   HMS Upholder, HMS Unseen, HMS Ursula and HMS Unicorn were laid up in 1994, and in 1998 were bought by Canada for service from 2000 as the Victoria class. These are named HMCS Chicoutimi, HMCS Victoria, HMCS Cornerbrook and HMCS Windsor respectively.


Upholder class submarine

Upholder class submarine

Upholder class submarine

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