I was browsing around the u-boat sites and found this one:
http://www.uboatarchive.net/Uboatlist.htm
There`s lots of interesting stuff there, photos, interrigation reports of survived u-boat crew. What I found interesting was the radio log from the ships and planes which were capturing the U-505. And there`s the whole war diary of U-505!!
And here`s another site with stuff about radars, radios, torpedoes etc.
http://www.ibiblio.org/hyperwar/ETO/...025/index.html
Hope you like it!
PS. if someone has posted this before, I apologize I posted it again.