Would Japan benefit from standardizing hulls across destroyers, cruisers, capital ships, and carriers?
Short answerYes, in grouped families, but the production savings would be balanced by compromises in each variant.
NotesA practical common-hull policy could pair sloops with destroyers, light with heavy cruisers, and capital ships with carriers. Repeated hull production creates economies of scale and predictable construction, although commonality also embeds inefficiency in each specialized variant. The comparison to the F-35 family illustrates the trade between scale and optimization.