Dave Saxton wrote:The Baron wrote that he obeyed the order to survey Norfolk and and Suffolk by using his optical director. The optical director was a persiscope like device. I studied some Denmark St. photos of Bismarck in action and it appears that the aft optical rangefinder, which the radar antenna was mounted to, was aimed at Hood or Prince of Wales throughout. This is a strong indication that the aft radar was being used to range the enemy battleships, because it was not being used to range the enemy cruisers.
The aft range finder and the foretop range finder are always aimed in the same direction, but not the forward (conning tower) range finder in the Denmak St. photos. Seperate FuMO27 radars could be tied together and operated as one unit, using single Central Impulse Geraete, Z Geraete, and Summer. They may have been doing this. After the battle the foretop rangefinder and the aft range finder remain aimed on the same coordinants, which varies from photo to photo indicating that they are going around and around together through a 360* arc.
The most forward radar antenna is not operating, or at least not operating in concert with the other two. It remains aimed directly aft in several post Denmark St. photos. This may be an indication that the conning tower radar was the one knocked out. If the foretop radar was knocked out as well it may have been brought back online by tying it to the aft radar. Some survivors talking amongst themselves, but secretly monitored by the British, said that the faulty radar was repaired by late on 24th.
It's likely that the radar knocked out was the forward (conning tower) set as Luetjens used that term in his language. He may have wanted the foretop radar to use against the shadowing cruisers and not having the use of the most forward radar he needed the Prinz Eugen to use its radar to survey ahead. Hence the change in position.
I can not see the direction the after rangefinder is pointing at the Denmark strait very well in teh photos, but what you said makes sense to me , thanks.
still some unanswered questions.