If you want to learn/read the 'master class' of anti U Boat operations, then either read Walker RN (now out of print) or read my many pages on this hero of WW2. He never found a U boat and didnt kill it.
www.captainwalker.uk (there may be some anomolies on this site, its never been 'right', missing images etc. I blame MS.
some US sites claim the honour of forming the first 'hunter/killer' groups. Rubbish. Walker did it. Walker RN, the book, is included in this web site. Took me weeks to scan each page.
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Captain!, there's a destroyer on the por........ periscope is flooded Sir!
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Darkness is only the absence of Light;
Ignorance is only the absence of knowledge ©
www.worldwartwo.uk
www.captainwalker.uk