How much modification would Blue Streak have needed to fit a Resolution-class submarine?
Short answerThe submarine would be developed around the selected missile's space and launch requirements.
NotesThe missile's size and launching requirements would set the terms for the submarine design, as Polaris did for Resolution. A domestic missile route would require an early commitment to development and funding. That decision would need to precede the submarine's ordering and construction. The proposed alternative remains speculative, with no detailed conversion design supplied.