The basics of modern ASW warfare are fairly well known, certainly to those interested or have ever played Harpoon for more then a day. :P Living next to a P-3 Orion base my whole life, and being part of Sea Cadets when young, ASW ops seem like common sense. Granted, the specific way platforms are used in certain tactical situations is a secret, but the general idea is not. Find em, Fix em, Finish em. Using passive detection from MAD equipment and passive sonar to get a general location. Send in your helos or ASW aircraft to drop buoys, and once you got the bastage located for sure, let him have it with torps. Preferably, don't use the platform you're using to detect. I try to use helos to kill since the P-8s and P-3s can go on to other targets quickly to prosecute them, and I like to save their weapons for when help is too far away to do any good.