Their anti-aircraft battery consisted of fourteen 10.5 cm C/33 L/65 guns, sixteen 3.7 cm L/83 guns, and between ten and twenty 2 cm guns. The 10.5 cm guns fired at a rate of 15–18 rounds per minute, and had an effective ceiling of 12,500 m (41,010 feet). They were mounted in six Dop. L. C/31 twin mounts amidships, and one such mount superfiring over "C" turret, which allowed depression to −8° and elevation to 80°. When used to engage surface targets, the guns had a maximum range of 17,700 m (19,357 yd) at an elevation of 45°. The 3.7 cm guns were placed in eight manually operated Dopp LC/30 twin mounts. At 85°, they had an effective ceiling of 6,800 m (22,310 ft), though tracers were limited to 4,800 m (15,750 ft). They had a rate of fire of 30 rounds per minute.