Who made the better early SSBN choice: the United States with thirty-six boats in several classes or Britain with four Resolution-class submarines?
Short answerAmerica gained more design experience, while Britain would have benefited from making five or six boats, rather than four, its normal deterrent class size.
NotesThe United States learned more by building thirty-six ballistic-missile submarines across several designs. Britain obtained a credible deterrent with four Resolution-class boats but originally considered a larger force. Establishing five or six as the normal class size would improve maintenance margins and create room for later conversions. In a six-boat successor fleet, for example, two older Vanguard-class hulls might be converted from ballistic missiles to conventional cruise missiles. Force size shapes continuous deterrent patrols and the options available late in a class's life.