Vanguard submarines

U.K News / US News

Three Royal Navy Nuclear Submarines at Sea in Rare Deployment — What It Means for Britain’s Deterrent

Three of Britain’s four Vanguard-class nuclear submarines are reportedly at sea at the same time, an unusual deployment that has drawn attention to the state of the Royal Navy’s deterrent fleet. The reported deployment was described in coverage on 28 October 2026, with the fourth boat, HMS Victorious, said to be undergoing deep maintenance at Devonport. The Royal Navy has…