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Old 08-17-2016, 12:33 PM   #4
Join Date: Mar 2010
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Originally Posted by Onkel Neal View Post
..., and another set are located on the opposite (stern) end of the control room, they open the vents for the MBT #2. That's what I think.
I think you thought is correct, stern of the control room is MBT#2(?)

(maybe someone can help to translate )
"Handrad für die Entlüftung des Tauchbunkers 2"

Source: "Vom Original zum Modell: Uboottyp VIIC"; ISBN 3-7637-6002-4

Also take a look at 00:04:
(flood the MBT#4 ?)

Maybe this background can help too (it's not WWII but possible it was similar)

Definition for Bundesmarine submarines:

Source: "Unterseebootbau"; ISBN 3-7637-5958-1

Lenz-/Seewasser: Seawater
Kraftstoff: Fuel
Frisch-/Waschwasser: (not salty) Drinkwater
Schmieröl: oil
Lüftung: air
Druckluft: compressed air

edit: a shape of valves is given for its purpose in case of darkness

Last edited by Feldpost; 08-17-2016 at 02:41 PM.
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