SEEHUND AUTOPILOT INFO - It apparently was a Siemens LGW K12

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WORKING WITH 1]http://www.angewandte-geologie.geol.uni-erlangen.de/autopilo.htm[/url]

This document is in German. But you can go to Google.com and use search words "Siemens LGW" and look for that reference, and click onto "translate this page"

And here is a close-up diagram of the K12's operational parts

http://www.angewandte-geologie.geol.uni-erlangen.de/auto05.jpg

Or you could just click onto the smaller drawing.

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Here are some more details.

Here are some more details. This fellow is a Cloggie or a Dutchie and Klaus Mattes (author of "Die Seehunde") works in Holland, so the two of them will have a chance to exchange notes and ideas. The information below is from his e-mails. Additionally I'm waiting for more info (I hope) from the Siemens Corporation.

Once I had the entire gyro control and platform of such an u-boat. It was simply based on the K 12 gyro platform used in aircraft. (Siemens LGW) There were no provisions, what so ever, made to cope with these kinds of environments. [We were discussing waterproofing of connectors and extra care and efforts protecting radio gear from moisture and salt water spray.]

However, the Seehund was mainly steered by electric means via an arrangement as was used by pilots in aircraft. Thus, with one hand there was a slow and fast left right steering switch and a free-run switch of the hydraulic engine of the K 12. Consequently, the main steering was done by one hand
only. The compass-ring in the Gyro K 12 was rotated, by which means the Gyro followed that movement, until there was no difference signal anymore and consequently the hydraulic ruder returned in its neutral position.

In aircraft they used the "Relais-Peiltochter" which synchronized the Patin Compass signals with that of the K 12 Gyro Made by Siemens LGW)(both were competitors).


For some years, I had some of these platforms in working order. I swopped (got) it from one who lived near Velsen/IJmuiden. His father, who still
lives, worked opposite to a site at which these Seehunds were being stored and kept (Hoogovens). Just after the war had stopped, he crossed the canal and took out several complete installations.

These were still (1980s) in a rather good shape!

I have still an electrical wiring diagram, which his son had made for me.

In 1988/1989 I traded one installation with a French friend, the second one went to someone else.

Patin compass were of a very special construction. It necessitated a certain amount of vibrations, as to keep their electrical sliprings clean. This was not occurring onboard of submarines.

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Hopefully this will get you

Hopefully this will get you to the url of the Ft. Eustis site.

http://www.nasm.si.edu/researc....aid.pdf

It is. It works, but it will take about a minute or two to download the pdf file. You can also go to Google.com and use "Siemens LGW" as a search term. You will only have to look at about 15 sites.

Roll # 17
Doc. # FE 463 (perhaps relevant) draft, description, method of operation, repairs of Siemens LGW Switch box.
Doc. # FE 465 short description of Siemens LGW course steering device.

Roll # 28
Doc. # FE 700/K Conference on steering device K12

Anyway the titles of the other documents here make interesting reading too. This IS the rocket science section.