Sea Platforms

UK Trafalgar-class submarine HMS Trenchant extended in service

11 February 2020

A 31-year-old Trafalgar-class nuclear-powered attack submarine (SSN) is being kept in service for another year by the UK Royal Navy (RN) after construction delays prevented its replacement joining the fleet, Jane's has learned.

RN sources told Jane's on 10 February that HMS Trenchant will have to remain at sea until the fourth Astute-class submarine, the future HMS Audacious , is handed over to BAE Systems in early 2021 after hitting a 17-month delay in the company's Barrow-in-Furness shipyard.

The extension in service of Trenchant is the latest consequence of the delays to Audacious , which was originally due to begin its sea trials in late 2018.

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