Author Topic: VIIC/41 - Schematices drawing  (Read 512404 times)

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Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #660 on: 04 Nov , 2010, 21:55 »
Hi Pat, I mean if the periscopes are extended to there maximum height. The distance from the bottom of the keel to the very top on the periscopes will be these figures. In the drawing below the
« Last Edit: 04 Nov , 2010, 22:41 by NZSnowman »

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #661 on: 05 Nov , 2010, 01:30 »
Several weeks back I was so sick at looking at piping plans, I had to working on anything but piping. So I decided to draw the galley. Below are the results. Happy viewing.


Offline Pat

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Re: VIIC/41 - Schematices drawing
« Reply #662 on: 05 Nov , 2010, 06:42 »
Yes, that makes more sense now.  Thanks Simon.

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #663 on: 05 Nov , 2010, 15:57 »
I love it when your research comes together. Even the smallest things can make me happy ;D Plus it all adds more detail to the big u-boat picture and increase the accurately of my drawing.

I have always believed that all the pipes under the deck were attached to the deck framing. This morning I noticed a pipe bracket I had not seen before in a picture from a Type IX. I have very few pictures of under the deck for Type VII

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #664 on: 06 Nov , 2010, 02:50 »
Below is a cross-section of the exhaust outlet valves from the diesel motor. The yellow circle is the trunk line however, there look to be an outer shell around the trunk line (red) and a space between them. Does anyone know if they water cool the hot exhaust gases before venting them out from the boat ???


Offline SnakeDoc

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Re: VIIC/41 - Schematices drawing
« Reply #665 on: 06 Nov , 2010, 07:26 »
Hi Simon

You have found great photos of underdeck space ;)

Does anyone know if they water cool the hot exhaust gases before venting them out from the boat ???

According to cooling-water  system available on uboatarchive.net:
http://uboatarchive.net/U-570Plate13.htm
http://uboatarchive.net/U-570Plate13A.htm
http://uboatarchive.net/U-570Plate13B.htm
the exhaust gases were cooled by means of sea water from engine cooling system.
There were cooled both mufflers located outside the pressure hull and exhaust manifolds in Diesel engine room.

Take a look also at fuel oil compensating system:
http://uboatarchive.net/U-570Plate10.htm
The water from cooling system taken from mufflers outlets was used to filling the cool water gravity tank located
in the Conning Tower casing, from where it was taken to compensating the lack of oil in fuel oil tanks and bunkers
and to feed the hot water to the boat sanitary pipings:
http://uboatarchive.net/U-570Plate21.htm

--
Regards
Maciek





Offline SnakeDoc

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Re: VIIC/41 - Schematices drawing
« Reply #666 on: 06 Nov , 2010, 07:31 »
I forgot to add:

Quote
5.  The cooling water flows round the exhaust manifold, the group exhaust jacket, and thence to jacketing round the muffler valve and silencer.  Finally it is led to a gravity tank in the after side of the bridge casing where it is used to compensate fuel from the external and internal O.F. tanks.

http://uboatarchive.net/U-570BritishReport.htm
page 47

--
Regards
Maciek

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #667 on: 06 Nov , 2010, 12:27 »
Thanks again Maciek!! I think everday I learn something new about U-Boats!  ;D

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #668 on: 06 Nov , 2010, 15:33 »
Hello Simon


Does anyone know how the aft torpedo door work? As the plans do not seem to match the real pictures.

You mean rear door of the tube (interior door)?
There was a door supported by the hinge. On the rear edge/end of the tube was rotating ring with
some kind of bayonet screw, which locked closed door.
There is also a gear, to which can be attached a hand lever, and which is used to rotate a lcoking ring
(at about 5 hour ;) on the below image).

To the locking ring were also attached angle plate, which was used to interlock some operations.

See also photos on u-historia - you will see parts described above.

--
Regards
Maciek


Sorry, good point. I was talking about the outer door. On the plans it looks like it hinge at the top and the whole door left up

Way back in March I was asking about the stern outer torpedo hatch and how it worked. As from pictures of U-995 I just could not see how it hinge at the top and the whole door left up. This morning I read that the stern torpedo tube hatch has been welded shut, so the hatch openings are not visible. That is why I could not make head or tails of it  ;D

Maciek, I forgot to add, almost all of the pictures I have of the under deck have come from U-534 while she was being cut up. I have some excellent pictures of the framing, piping etc

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #669 on: 06 Nov , 2010, 15:46 »
I can not imagine that these taps are the original German taps, does anyone know what they would look like? (Or are they the original tap?)

Thanks, Simon.


Picture from http://www.u-historia.com/



I was just watching a old WW2 Newsreel movie and it looks like the tap are likely the original German taps

Offline SnakeDoc

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Re: VIIC/41 - Schematices drawing
« Reply #670 on: 07 Nov , 2010, 03:09 »
Hi Simon

Maciek, I forgot to add, almost all of the pictures I have of the under deck have come from U-534 while she was being cut up. I have some excellent pictures of the framing, piping etc

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #671 on: 07 Nov , 2010, 18:56 »
You can found heaps of great pictures on http://www.flickr.com/, just type U-534 in the search box :)

http://www.flickr.com/search/?q=u-534

http://www.flickr.com/search/?w=all&q=u-boat&m=text

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #672 on: 08 Nov , 2010, 22:41 »
Continuing adding more piping under the decking. Added the Main Air Inlet Trunk line and the port and starboard Air Inlet Trunk lines. Happy viewing, Simon.


Fig. 1. Top view of pipes under the deck.


Fig. 2. Side view; (Top) Port Air Inlet Trunk line only; (Bottom) Main Air Inlet Trunk line.

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #673 on: 10 Nov , 2010, 12:51 »
Does anyone know the dimensions of the pressure hull for the conning tower for a Type VII