What should the legal minimum size of the Royal Navy be?
Short answerA balanced force in multiples of four, sized to guarantee continuous availability rather than merely paper totals.
NotesThe proposed fleet floor uses multiples of four to support continuous availability. Four sets of ships would support escort or surface action groups, with another four frigates for home-water duties and deterrent protection. The proposal also includes four deterrent submarines and enough SSNs for both independent tasks and group support. Amphibious lift, at least eight tankers, and at least four solid-stores ships complete the supporting fleet. Continuous at-sea deterrence supplies the example for choosing four units when one must always be available.