What might a distinct post-First World War armoured-cruiser treaty category have looked like?
Short answerOne suggested framework uses about 20,000 tons with 10-inch guns, paired with a separate 10,000-ton, 6-inch light-cruiser category.
NotesOne counterfactual treaty system would separate a true postwar armoured cruiser from a light cruiser. A 10-inch gun could form the upper limit for an armoured cruiser of roughly 20,000 tons, while a separate light-cruiser category used a 10,000-ton ceiling and 6-inch guns. Navies never agreed to build around this framework. The thought experiment shows how the historical 8-inch cruiser occupied a compromise space created by treaty definitions.