Evolving the N3 into an 18-inch fast battleship

How might the N3 design evolve if naval construction continued without treaty limits?

Britain could lengthen the hull for more machinery and use enlarged dockyard capacity to create a faster ship while retaining the N3's 18-inch armament.

The N3 was a heavily protected starting point rather than the limit of British postwar design. If another navy produced a fast capital ship, Britain could use planned 1922 infrastructure improvements to build a larger successor. Lengthening the hull aft of the concentrated forward armament would create room for more machinery without redesigning the gun arrangement. The result would combine N3 protection and 18-inch weapons with fast-battleship speed, illustrating how dock dimensions shape the next design generation.