[MadMike]

Try these for starters-

Fleet Submarine Manual

Standard Phraseology (pages 173 and 182)
http://www.maritime.org/fleetsub/index.htm


BDU KTB-
http://www.uboatarchive.net/BDUKTB.htm

Interrogation reports-
http://www.uboatarchive.net/BritishReports.htm

U-boat KTB's-
http://www.uboatarchive.net/Uboatlist.htm

and the gem-
http://www.ww2archives.net/servlet/interceptCalendar.do

Merry Christmas,

Mike