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Allies and Type XXi u-boats

Posted: Fri Nov 08, 2024 4:53 am
by Rocket J Squrriel
How much did the Allies know about the boats before getting hold of them after the war and are there any sources on it?

Re: Allies and Type XXi u-boats

Posted: Fri Nov 08, 2024 8:25 am
by Craiglxviii
Rocket J Squrriel wrote: Fri Nov 08, 2024 4:53 am How much did the Allies know about the boats before getting hold of them after the war and are there any sources on it?
We had the design specs for them, had evaluated them and put a counter in place before the first Type XXI was launched.

Re: Allies and Type XXi u-boats

Posted: Fri Nov 08, 2024 12:52 pm
by Nik_SpeakerToCats
And sky-lights in their pens' armoured roofs ??

Yes, yes, I'm thinking of that climactic scene in 'Das Boot', where weary crew returns to pen after air-raid to discover it now has generous 'natural lighting'...

2D6 Morale Roll: Snake-eyes...

Re: Allies and Type XXi u-boats

Posted: Fri Nov 08, 2024 7:09 pm
by Rocket J Squrriel
Craiglxviii wrote: Fri Nov 08, 2024 8:25 am
Rocket J Squrriel wrote: Fri Nov 08, 2024 4:53 am How much did the Allies know about the boats before getting hold of them after the war and are there any sources on it?
We had the design specs for them, had evaluated them and put a counter in place before the first Type XXI was launched.
How did we get those? I tried google but probably am searching the wrong way.

Re: Allies and Type XXi u-boats

Posted: Fri Nov 08, 2024 7:48 pm
by Craiglxviii
Rocket J Squrriel wrote: Fri Nov 08, 2024 7:09 pm
Craiglxviii wrote: Fri Nov 08, 2024 8:25 am
Rocket J Squrriel wrote: Fri Nov 08, 2024 4:53 am How much did the Allies know about the boats before getting hold of them after the war and are there any sources on it?
We had the design specs for them, had evaluated them and put a counter in place before the first Type XXI was launched.
How did we get those? I tried google but probably am searching the wrong way.
Our spies > their spies.

Also, our intelligence gathering.

More details here, including HMS Seraph’s conversion for counter trials by late 1944.

http://rnsubs.co.uk/articles/developmen ... rials.html

Re: Allies and Type XXi u-boats

Posted: Sat Nov 09, 2024 1:05 am
by Rocket J Squrriel
Thank you!

Re: Allies and Type XXi u-boats

Posted: Sat Nov 09, 2024 3:07 am
by warshipadmin
Very interesting article. Sonobuoys in WW2? Wow. (I used to work for GEC Marconi who made Sonobuoys on the same site - in fact most of our team had Sonobuoy experience https://www.dst.defence.gov.au/news/202 ... -subs-hide).