CIA pisze:Być moze zbyt skrótowo potraktowałem opis zamieszczony w książce, który jest znacznie bardziej obszerny i... znacznie bardziej zagmatwany

, dlatego zachęcam do przeczytania tych kilku stron w książce (w wydaniu polskim str. 69, 70, 71, 72, 73, 448)...
Chyba też muszę sobie przeczytać to wszystko jeszcze kilka razy...

W książce Mullenheima "Battleship Bismarck A Survivor's Story" jest jeno tyle:
"Since a battleship is essentially a floating gun platform, a description of the Bismarck's gunnery equipment and procedures may be helpful, especially because these differed from navy to navy. Her surface fire-control system was installed in armored stations forward, aft, and in the foretop. Inside each station were two or three directors. A rotating cupola above each station housed an optical range finder and served as a mount for one of three radar antennas.
The director, which was basically a high-powered telescope, was used to measure bearing for surface targets. In contrast to most other navies, the Kriegsmarine did not mount its directors in the rotating range-finder cupola, but below it, inside the fire-control station. The director was designed like a periscope so that only the upper lens protruded slightly above the armored roof of the fire-control station.
Not only the optical range finders but also the radar sets were used to measure range to the target. German radar had a shorter range and poorer bearing accuracy than the optical equipment. It gave exact range information in pitch darkness or heavy weather, but it was extremely sensitive to shock caused by the recoil of heavy guns. Range and bearing information from directors, range finders, and radar were received in two fire-control centers, or gunnery-computer rooms, which provided continuous solutions to ballistic problems.
Control of the guns was primarily the task of a gunnery officer. His personality, as expressed by his choice of words and tone of voice, could influence the morale of his men. Either the main battery or the secondary battery could be controlled from any one of the three stations, whose directors were brought to bear on a target by two petty officers under the direction of a gunnery officer who observed the fall of ¹hot. In each station, there was a "lock-ready-shoot" indicator whose three-colored lights showed the readiness of the battery, the salvo, and any possible malfunctions in the guns. When the battery was ready, the petty officer on the right side of the director would fire by pressing a button or blowing into a mouthpiece. It was also possible to actuate the firing system from any of the computer rooms.
The gunnery officer could order a "test shoot" to find the range, or he could order a series of full or partial salvos. Rather than waiting to spot each splash between salvos of a "test shoot," he could use a "bracket" to find the target. A "bracketing group" consisted of three salvos separated by a uniform range, usually 400 meters, and fired so rapidly that they were all in the air at the same time. On the Bismarck it was customary to fire "bracketing groups" and, with the aid of our high-resolution optical range finders, we usually succeeded in boxing or straddling the target on the first fall of shot.
The gunnery officer was aided in spotting the fall of shot by one of the gunnery-computer rooms, which signaled him by buzzer when the calculated time of projectile flight had expired.
Once the range and bearing had been found, the gunnery officer in control would order, "Good rapid." He could choose to fire full salvos of all eight guns or partial, four-gun salvos fore and aft. In either case, the "firing for effect" was as rapid as possible.
Firing could also be controlled by the individual turret commanders. This allowed great flexibility in case of battle damage. However, in action it was most important for the senior gunnery officer to retain control of the batteries for as long as possible, because central fire control with the help of computer rooms was far superior to independent firing under the control of the turret commanders."