砲口初速
For close-range defense against torpedo boats, the ships also carried eight SK L/30 quick-firing guns. These were also mounted in casemates, four in sponsons abreast the forward main battery turret and four in the rear superstructure. They were carried in MPL C/89 mounts with an elevation range of −10 to 20 degrees; at maximum elevation, the guns could reach targets at . Muzzle velocity was . These guns were supplied with a total of 2,000 shells, though as with the 10.5 cm guns, ammunition storage was increased during the modernization, to 2,384 rounds. These were originally all C/83 common shells, though they were replaced by C/01 semi-armor-piercing (SAP) shells in 1901, and C/07 shells in 1907, which came in HE and SAP varieties. Rate of fire was theoretically fourteen shots per minute, but in practice it was limited to ten rounds per minute.