The "Tegetthoff"s carried a secondary armament which consisted of a dozen 50-calibre Škoda K10 guns mounted in casemates amidships. Additionally, eighteen 50-calibre Škoda K10 guns were mounted on open pivot mounts on the upper deck, above the casemates. Three more Škoda K10 guns were mounted on the upper turrets for anti-aircraft duties. Two additional Schwarzlose M.07/12 anti-aircraft machine guns were mounted atop the armoured cupolas of each ship's rangefinders. Each ship had two Škoda G. L/18 landing guns, and two Škoda SFK L/44 S guns for use against small and fast vessels such as torpedo boats and submarines. Each ship was also fitted with four submerged torpedo tubes, one each in the bow, the stern, and each side. Each ship usually carried twelve torpedoes.