carried a similar secondary battery to the preceding -class design. She mounted twelve SK L/45 quick-firing guns in single casemates along the center of the ship. These guns fired armor-piercing shells at a rate of 4 to 5 per minute. The guns could depress to −7 degrees and elevate to 20 degrees, for a maximum range of , and after the 1916 refit, the range was extended to . The shells weighed and were fired at a muzzle velocity of . The guns were manually elevated and trained.
