 Eight of these guns were fitted in twin-gun turrets abreast the forward and aft main gun turrets while the remaining 12 guns were mounted in casemates on the sides of the hull.These guns could depress to −10 degrees and had a maximum elevation of +15 degrees; they had a rate of fire of six shots per minute.They could fire a high-explosive projectile with a muzzle velocity of to a maximum distance of .