Changes

''This is the standard anti-aircraft equipment developed and used by the US. It was used as the standard anti-aircraft armament on heavy cruisers, battleships, and other medium-sized and greater ships. It would be upgraded to a newer model, dual-purpose gun later in the war.

''This is the standard anti-aircraft equipment developed and used by the US. It was used as the standard anti-aircraft armament on heavy cruisers, battleships, and other medium-sized and greater ships. It would be upgraded to a newer model, dual-purpose gun later in the war.

==Notes==

==Notes==

==Fit Bonuses==

==Fit Bonuses==

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==Improvement==

==Improvement==