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Sub HMS Trenchant Upgrades with Thales Sonar

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.