Greetings and Type VIIC question

[quarterdecktoph]

Greetings to all and sundry!
I have just found this forum and have been reading avidly, and now have a few questions to ask of you learned folk...
I am quite fond of the Type VII series of WWII U Boats. I am working on a combined project involving my own drawings, and a build, which I will post later.
Question: Are the red circled "fins" that seem to circle the delivery end of the torpedo tubes that are illustrated in the famous Köhl drawings below...

https://www.kabutographics.com/_projects/Kohl_Rohr_fins001.png

.
the same fins I am looking at in these linked photos of the U-260 wreck]http://www.iol.ie/~hofnanet/Media%20/diving%20images1.2/6%20copy.jpg[/img]

http://www.iol.ie/~hofnanet/Media%20/diving%20images1.2/6%20copy.jpg

http://www.iol.ie/~hofnanet/Media%20/diving%20images1.2/3%20copy.jpg

[quarterdecktoph]

Re: Greetings and Type VIIC question

here is a different view of the same section of drawings I have question of.... this drawing is from Anatomy of Type VII book... https://www.kabutographics.com/_proj...s-from-top.png

[JWLaRue]

Re: Greetings and Type VIIC question

They look like some form of structural support for the tubes.....

-Jeff

[quarterdecktoph]

Re: Greetings and Type VIIC question

They look like some form of structural support for the tubes.....

I was thinking that was a possibility also - it would be prudent to reenforce the area of the nested warhead. Assuming that section of the drawings and the underwater photos are showing the same thing, it would surround the warhead of a torpedo ready for launch... but I also wonder if it might be some sort of degausing kit that might be used in conjunction with magnetic pistols... or is that thinking too far out in deep roving right field do you think? It would do little to protect mines loaded into the tubes, though.
The very thorough http://www.u-historia.com does not show anything about that section of the drawings or tubes that I can find. Are there similar marks on drawings of Type IX boats, or other U-boats?
Cheers...

[JWLaRue]

Re: Greetings and Type VIIC question

I've never heard of any degaussing capability onboard U-boats.

Another thing I've thought of is that it might be somehow related to the system used to prevent the air impulse from being ejected out the tube along with the torpedo. The location of those square openings are right about where the tube pierces the pressure hull.....

-Jeff

[quarterdecktoph]

Re: Greetings and Type VIIC question

've never heard of any degaussing capability onboard U-boats.

Jeff,
I have not heard of anything about degaussing capability onboard U-boats either, but was stretching my brain cells, and wondering what it did. They look like the coils on a tool de-magnetizer I used to use in a cnc machine shop...
Thanks for the input!