Hello Mr. Tore,
When I look at the Papenburg depth gauge between the two control stations in the control room, it looks like the gauge is in two parts. The forward water column looks to indicate the height of the periscope to a point. Then the aft water column on the right looks to indicate the periscope head/eye at a position above or below the water surface. Is this basically correct?
The question I have is this gauge is in the control room, and the captain is in the tower working the attack periscope. Does the captain use/need the Papenburg depth gauge. I would not think an experienced captain would need the gauge because he could see when the periscope is above or below the water.
I don't recall any linkage between the periscope pneumatic-hydraulic drive and the Papenburg depth gauge...
Also, what is this device on the other end of the control room. It is two long tubes with a perforated metal protective covering? See photo...
The huge 0 - 25 meter depth gauge; what are the reference points? At 25 meters is that to the surface from the bridge, deck, keel? If it were the keel, then it could never get to 0 meters...
Regards,
Don_