 Each main gun turret was given a DM @-@ 12 12 @-@ meter ( 39 ft 4 in ) rangefinder for use in local control , but they were generally controlled by one of three <unk> @-@ 8 fire @-@ control directors . These had two 8 @-@ meter ( 26 ft 3 in ) stereoscopic rangefinders , one to track the target and the other to measure the range to the ship 's own shell splashes . Two of these were protected by 20 mm ( 0 @.@ 79 in ) of armor and were mounted atop the rear superstructure and the tower @-@ mast . The other was mounted on top of the conning tower and was protected by 50 mm ( 2 @.@ 0 in ) of armor . They used a <unk> @-@ 0 mechanical computer to generate firing solutions . Four <unk> @-@ <unk> @-@ II directors , with two 4 @-@ meter ( 13 ft 1 in ) rangefinders each , controlled the secondary armament . One pair was on either side of the tower @-@ mast and the aft pair was on each side of the aft funnel . Three <unk> @-@ 300 stabilized directors , each with a 4 @-@ meter rangefinder , controlled the heavy anti @-@ aircraft guns . There was one on each side of the forward funnel while the other was atop the rear superstructure . 
