Royal Navy's Sixth Astute-Class Submarine, HMS Agamemnon, Commences Sea Trials

By ASR Newsdesk · 25 Sept 2026, 18:00 UTC

The Royal Navy's sixth Astute-class attack submarine, HMS Agamemnon, has begun sea trials after departing BAE Systems in Barrow. This testing phase precedes its entry into active service. The Astute-class submarines are described as the largest, most advanced, and powerful attack submarines operated by the Royal Navy, featuring capabilities such as precision strike, anti-submarine warfare, and intelligence gathering. They are armed with Spearfish torpedoes and Tomahawk IV missiles.