Why a large cruiser favors 12-inch guns

Why choose nine 12-inch guns over eight 13.5-inch guns for a large cruiser?

The 12-inch battery offers more guns, faster fire, easier maintenance and ammunition production, while preserving a clearer distinction from contemporary battleships.

The larger caliber pushes the design toward battleship expectations without necessarily serving the cruiser's intended mission. National ammunition infrastructure also matters: a navy can more readily support a caliber it already knows how to manufacture. Nine 12-inch guns offer a useful combination of salvo density, rate of fire, and mechanical reliability. Keeping a clear gap below contemporary 16- and 18-inch battleships also protects the design's cruiser identity and procurement logic.