USE THIS ONECanada’s Ultra announced a contract award to commence work on the key Variable Depth Sonar (VDS) system for the Canadian Surface Combatant (CSC) program – named the Towed Low Frequency Active Sonar (TLFAS). This subcontract moves the development of CSC’s anti-submarine warfare (ASW) capability from the program definition phase into the full manufacture and delivery of the vessels suite of sonars.

The TLFAS is a towed sonar solution, optimised for the detection and tracking of stealthy submarines in challenging ocean environments. The TLFAS system is designed and manufactured by Ultra in Nova Scotia, Canada. The program is also triggering major Canadian investment decisions by Ultra in terms of facilities, inward technology transfer and research partnerships which will be announced through the course of 2021.

Bernard Mills, president of Ultra Maritime Sonar Systems commented: “Ultra recognises our responsibility to provide, through CSC, the highest possible level of ASW capability to the Royal Canadian Navy. We are therefore immensely proud of this contract award, especially because it is grounded in Canadian innovation and ingenuity, and because it will be an enduring driver of both operational capability and national industrial benefit. Most importantly, this is not just a success for Ultra but is one for the entire CSC enterprise, and I want to thank our strong partners in Lockheed Martin Canada, Irving Shipbuilding Inc., and all our peers on the CSC team who are as dedicated as we are to the delivery of a world-class naval capability to Canada, built by Canadians.”


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  1. Our AWDs use an earlier development of the Ultra towed active sonar so the CSC development should offer an upgrade path for the AWD.


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