Did anyone design an all-big-gun cruiser before HMS Dreadnought?
Short answerNot in the completed Dreadnought form, but British armoured cruisers already showed the hull and primary-gun layout from which the concept developed.
NotesThe Duke of Edinburgh, Black Prince and Devonshire classes show a recognizable design path before Dreadnought. Their primary weapons were still single guns and they retained secondary batteries, so they were not finished all-big-gun ships. Their fast-cruiser hulls and distribution of principal turrets nevertheless offered a model for building a fast battleship. The watch point separates a complete revolutionary design from the earlier components and habits that made it possible.