The Iowa class was a class of six fast battleships ordered by the United States Navy in 1939 and 1940. They were initially intended to intercept fast capital ships such as the Japanese Kongō-class bat
USS Iowa (BB-61) fires a full broadside on 15 August 1984 during a firepower demonstration after her recommissioning
USS Iowa in World War II configuration and wearing Measure 32 Design 1B camouflage pattern, c. 1944
USS Iowa fires a full broadside of nine 16-inch and six 5-inch guns during a gunnery exercise (1984)
16"/50 gun projectile with six propellant bags (display) aboard USS Iowa (BB-61)
The Montana class was a planned set of battleships for the United States Navy. Intended as the successor to the Iowa class, the Montanas were to be slower but larger, better armored, and better armed.
Iowa-class battleship
…the Iowa class, the "slow" design studies would eventually settle on twelve 16-inch guns and evolve into the design for the 60,500-long-ton (61,500 t) Montana class after all treaty restrictions were removed following the start of World War II. Priority was given to the "fast" design in order to counter and defeat…
USS Missouri of the Iowa class, the predecessors of the planned Montana class
1940 study plan, BB-65 Scheme 4 (BB 65-4)
One variant of the fast BB 65-8 design scheme from 1940
An artist's impression of the Montana class