I would start with Submarine Command by Ben Bryant.I believe it was required reading on the perisher course in the 1970s.I would also read a lot of the wartime (ww2) books by people such as Mars,Young etc.The basic techniques are always the same.Technology just gives you a better chance of hitting something and avoiding the counter -attack.This only really sunk (!) in with me when I went on three submarines from different eras and realised that apart from the propulsion system that they are not really different.It is the captain and luck that make the difference.I once asked an air-traffic controller at a major UK airport if they had a tactics manual.His reply was no-he just made it up on the day with the benefit of his experience.Submarine combat is the same
You will not find much on Nato tactics but you can try Milan Vego's book on Soviet Naval Tactics.Finally just get all the regular forum posters to pm you with their favourite tactic and you are probably onto a winner and pm me the final result!!
