Marine Link
Friday, October 21, 2016

Sub HMS Trenchant Upgrades with Thales Sonar

July 6, 2011

Photo courtesy Thales UK

Photo courtesy Thales UK

HMS Trenchant, the Royal Navy's (RN’s) most capable and up-to-date Trafalgar-class nuclear-powered hunter-killer submarine (SSN), has been ceremonially welcomed back into the operational fleet with upgraded state-of-the-art sonar from Thales.

As part of a major refit programme that started in late 2009, the submarine has been fitted with Thales’s world-class Sonar 2076 Stage 5 system, and additional upgrades such as Tomahawk cruise missile capability. A ceremony at Devonport marked the boat’s return to service.
Previously fitted with 2076 Stage 4, the upgrade to the new Stage 5 system ensures that Sonar 2076 retains its reputation as the world’s most advanced, fully integrated, passive/active search and attack sonar suite.
Fleet submarines (Trafalgar and Astute class) combine qualities of stealth, endur­ance and flexibility. Operating on a global basis, these high-speed boats are used by the RN for high-intensity missile strikes, anti submarine and surface unit warfare, surveillance, and inshore and beach reconnaissance.
Thales UK was awarded a contract to upgrade three additional Trafalgar-class and three Astute-class submarines with the Stage 5 system by BAE Systems (BAESY) in February 2010. Once all the work is completed, 2076 Stage 5 will be fully deployed across the RN’s SSN fleet.
The Stage 5 inboard replacement programme is the latest in a series of develop­ments to improve the capability, efficiency and through-life cost of the sonar system. The upgrade also delivers an open architecture that allows a high degree of commonality with the Astute and Vanguard-class replacement (Successor) sub­marines, and supports the MoD’s vision for the evolution of a common sonar and combat system across the RN submarine flotilla.
Phil Naybour, head of Thales UK’s naval business, said:  “We welcome the news that HMS Trenchant has re-entered operational service. Sonar 2076 Stage 5 rep­resents a world-class sonar capability for the Royal Navy and we look forward to working closely with our partners to upgrade the remaining Trafalgar- and Astute-class submarines.”

Maritime Reporter Magazine Cover Oct 2016 - Marine Design Annual

Maritime Reporter and Engineering News’ first edition was published in New York City in 1883 and became our flagship publication in 1939. It is the world’s largest audited circulation magazine serving the global maritime industry, delivering more insightful editorial and news to more industry decision makers than any other source.

Maritime Reporter E-News subscription

Maritime Reporter E-News is the subsea industry's largest circulation and most authoritative ENews Service, delivered to your Email three times per week

Subscribe for Maritime Reporter E-News