
Canada’s most modern submarine returns to the water
RCN/DND––When Her Majesty’s Canadian Submarine (HMCS) Corner Brook began its undocking on June 13, it became the most modern submarine in the Royal Canadian Navy (RCN). This undocking marked the return of Corner Brook to Vancouver Island waters for the first time in almost a decade. It is also the first in a series of milestones required for returning the submarine to operational service alongside HMC Submarines Victoria and Windsor.Corner Brook was in an Extended Docking Work Period (EDWP) since 2015 in Esquimalt. Repairs included damage caused by a grounding in 2011 along with other more intrusive maintenance routines that can only be conducted in a long maintenance period in dry dock. The EDWP also included several notable upgrades such as a new communication mast called the Universal Modular Mast, which allows high-speed, highly-secure, jam-resistant satellite communications with shore. It also received the BQQ-10 sonar suite. The difference between the BQQ-10 and the previous 2040 sonar suite range from a significant increase in the amount of processing that occurs after data is received from a Victoria-class submarine sonar systems to how that information is displayed to the operators. Corner Brook is now able to fire the Mk48 7AT torpedoes, a significant upgrade to the current weapon, the Mk48 4M. In addition to these upgrades, and separate from the work conducted on Corner Brook during this period, is the Victoria-class Modernization (VCM) effort, which aims to ensure the submarines remain operationally relevant until the mid-to-late 2030s. This series of projects, as part of VCM, will provide improved habitability and deployment conditions for submariners and enhanced capabilities to support continued contributions to Canadian Armed Forces joint operations as well as improving survivability against current and evolving threats in an increasingly complex and changing battle space.The Royal Canadian Navy’s four Victoria-class submarines – Victoria,...



























