Tores mailbox VIIC and VIIC/41 operation and technical details

[Don Prince]

Hello Mr. Tore,


Where did that text come from?


Regards,
Don_

[tore]

Don.
From www. uboat archive.netU-570/British report.
Tore

[Don Prince]

Hello Mr. Tore,


How does this look?


Regards,
Don_

[tore]

Don.
This was my idea from the beginning, but we are not able to locate the expansion tank and the access to the sea.
My idea about the headertank is below.
Tore

[NZSnowman]

we are not able to locate the expansion tank and the access to the sea...

From C.B. 4318 report "The tanks are build of light plating..."

I rechecked my drive photos of U-1021 and U-352 and I cannot found kind structure in these areas. The tanks must be the first thing to rot away at the bottom of the ocean

I will keep looking.

Simon

[NZSnowman]

Don.
From www. uboat archive.netU-570/British report.
Tore

Hi Don & Tore

I never thought about looking at this report for pipe dimensions. I have always estimated the pipe dimensions by plans and photographs. I was just flipping through the report and notice on page 40 "The diameter of the ventilation pipes leading into the ship from the conning tower fairwater is approximately 9 - 3/4"." which is 247 mm. I just checked my 3-D model and I had estimated this pipe dimensions as 246 mm Sorry about the inaccuracy of my model I will fixs this and will do better next time

This can give us confidence that we are heading in the right direction to workout how a U-boat works and is constructed!

[NZSnowman]

Don.
From www. uboat archive.netU-570/British report.
Tore

Hi Don & Tore

I never thought about looking at this report for pipe dimensions. I have always estimated the pipe dimensions by plans and photographs. I was just flipping through the report and notice on page 40 "The diameter of the ventilation pipes leading into the ship from the conning tower fairwater is approximately 9 - 3/4"." which is 247 mm. I just checked my 3-D model and I had estimated this pipe dimensions as 246 mm Sorry about the inaccuracy of my model I will fixs this and will do better next time

This can give us confidence that we are heading in the right direction to workout how a U-boat works and is constructed!

 I found two more measurements in the report.

• The diameter of the opening of the vent valves of Fuel-Ballast Tank No's 2 & 4, U-570 was 401 mm, I had estimated 385 mm (4% error).
• The diameter of Engine air induction pipe on U-570 was 546 mm I had estimated at 502 mm (8% error).

[NZSnowman]

Tore & Don,

I think I found the expansion tank

Couldn't the small round shape at the very bottom of the saddle tank which is also right next the compensating pipe and the kingstons be the expansion tank??

It has a smaller diameter pipe coming out of it (its been cut in half but you can see it above and heading forward to the compensating valve).


Images has been resized. Click to view original image

[NZSnowman]

Maciek & Don, have you seen any size measurements for the high pressure gas bottles?

I also found these pictures of U-106 high pressure gas bottles 

[Don Prince]

Hello Mr. Tore,


I updated pages 81, 82, and 83 text and I modified the 6 drawings to match with our latest discussions about the header tank water compensating system.  I uploaded the latest version of skizzenbuch into dropbox. If you have the time would you please review what I have done and let me know if anything is not correct, or needs some changes to those 3 pages.


I was a little worried that my Schiffer managing editing would look for the files which I removed from dropbox... So I stayed up over night changing the drawings and struggling with the text.  Then I had to redo the text files (schiffer specific files), update section 1 of skizzenbuch, re-join the 6 PDF files, and add the new drawings to the image folder, and finally upload all the files back to dropbox...


Just another day in paradise!


Good night to all,
Regards,
Don_


 

[tore]

Simon.
I guess the assumed image of the expansion tank of the IXC cutaway is probably the echosounder, I have previously been fooled by this image.
Tore

[NZSnowman]

Simon.
I guess the assumed image of the expansion tank of the IXC cutaway is probably the echosounder, I have previously been fooled by this image.
Tore

What make you think its the echosounder?

[tore]

Simon.
I found a description in some documents a few years back when I was looking for the expansion tank, unfortunately I do not remember the name of the source.
Tore

[Don Prince]

Hi Simon,


This is a modern echo sounder used by fishermen...  Look familiar?


Regards,
Don_

[tore]

Don, you found the echosounder! On a type IXC it is probably a good place to put it as shown on the cutaway image, a similar place in the saddletank on the VIIC would be wrong. Keep looking for a small expansion tank and a seaconnection in the saddletanks of a VIIC.
Tore