HMS Audacious, the fourth of seven Astute class attack submarines, has been launched BAE Systems at its site in Barrow-in-Furness, Cumbria.
Armed with Spearfish torpedoes and Tomahawk land attack missiles, the Astute class submarines are the most highly-capable submarines ever built for the Royal Navy.
The nuclear attack submarine can hit targets up to 1,000km from the coast with pin-point accuracy and is equipped with a world-leading sonar capability and powered by a nuclear reactor.
The first three submarines in the class, HMS Astute, HMS Ambush and HMS Artful, are now in service with the final three Astute class submarines are at various stages of construction at the Barrow site.
Will Blamey, BAE Systems Submarines Managing Director, said:
Assistant Chief of Naval Staff Submarines Rear Admiral John Weale said:
HMS Audacious will now begin the next phase of its test and commissioning programme ahead of leaving Barrow for sea trials next year.
Source : UK Defence Journal