USS Atlanta was fitted with eight twin 5-inch gun turrets, placed in a unique configuration.

USS Atlanta was fitted with eight twin 5-inch gun turrets, placed in a unique configuration. She had three forward turrets and three aft turrets, mounted inline and increasing in height toward the midships, giving her a symmetrical appearance, with a "gap" in the middle superstructure. In addition, the aft battery also had one "wing-mounted" turret on each side, for a total of 16 five-inch guns. The firing arcs of the forward and aft batteries intersected at a very limited angle, giving her an arc of 60° in which she could fire all of her guns broadside (excluding the wing turrets). Because Atlanta was able to bring all her guns to bear only within that narrow arc, her ability to engage surface targets was limited. Her firing arcs were ideally suited to bringing her guns to bear on an aircraft, however, with a minimum of six guns available from any angle.

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