How much larger would an Admiral-class battlecruiser need to be to retain the original armament and carry the improved armour?
Short answerAt least about 5,000 tons larger.
NotesThe proposed redesign tries to retain the original heavy weapon fit while also incorporating the armour improvements associated with Hood's development. Doing both would add at least 5,000 tons. The answer is a displacement estimate rather than a complete design study, but it makes clear that protection and armament could not be increased without enlarging the ship and its support burden.