Three Vanguard-class nuclear-powered ballistic missile submarines of the British Royal Navy were deployed at sea simultaneously on October 27, 2026, marking the first time in over five years that 75 percent of the UK strategic fleet was underway at once. The concurrent operation of HMS Vanguard (S28), HMS Vigilant (S30), and HMS Vengeance (S31) addresses severe availability constraints that previously forced continuous deterrent patrols to exceed 200 days. While one vessel maintains the active Continuous At-Sea Deterrence patrol carrying Trident II D5 ballistic missiles, the remaining deployments reflect post-maintenance sea trials and operational transit rather than additional nuclear patrols. Read full defense news at this link...
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| While one Vanguard submarine maintains an active deterrent patrol carrying nuclear-armed Trident II D5 ballistic missiles, the remaining deployments likely reflect post-maintenance sea trials and operational transit rather than additional nuclear patrols. (Picture source: UK MoD) |