Montana

The Montana-class ships were an evolution of the Iowa-class "fast battleships": They were larger, better armored, and more heavily armed. The main armament was expanded to include twelve 406 mm guns arranged in four triple-gun turrets. The preliminary design work had commenced even before the United States entered World War II. The attack on Pearl Harbor delayed construction, and the success of aircraft carriers in the Battle of the Coral Sea and Battle of Midway prompted the U.S. to opt against pursuing the Montana class in favor of more promising ship types.