Four of the six 6"/30 caliber gun guns were mounted in casemates in the hull and the other two were mounted on the main deck in open pivot positions. The two main deck guns were 35-caliber weapons, while the casemate guns were 30-caliber guns. Data is lacking, but they could probably depress to −7° and elevate to +12°. They fired shells that weighed with a muzzle velocity of about . They had a maximum range less than when fired at maximum elevation.