What would a modern navy built to interwar cruiser, battleship, carrier, and destroyer limits look like?
Short answerIt could use enlarged Daring-type ships and small ASW escorts, but modern carriers and major combatants no longer fit comfortably into the old displacement bands.
NotesThe Daring class is the most plausible starting point for a ten-thousand-ton cruiser equivalent. A roughly two-thousand-ton destroyer could still serve as an anti-submarine escort, though the larger ships would have to provide much of the fleet's combat power. Carrier limits are the breaking point because modern aviation ships require far more displacement. Modern destroyers, cruisers, and carriers each sit roughly one interwar treaty category higher than their names suggest.