[banryu79]

Originally Posted by in_vino_vomitus

. I didn't know about the various components to an acoustic signature though. Can you point me at any writing on the subject?

Well, it is all explained in the LWAMI manual, really. You don't need any other source for it. If you look again at my previous post you will find a spoiler tag that contains the manual's relevant section; I have included it for your convenience (but you can find it in the manual, as already said).

... I thought I had LWAMI properly installed, but I've noticed a couple of discrepancies between the manual and the game. I can't seem to get the Seahawk to use the dipping sonar when I'm controlling the FFG. The 2000lb mines on the P3 haven't been changed to CAPTORs and according to the Ownship info on the USNI screen, the 688i still has 2 TB16 towed arrays rather than the TB23 on the starboard side.

I have no ingame experience about the FFG and the P3 Orion, but I wil try to help you as I can.
I red in the LWAMI manual about the MH60 dipping sonar:

 

· The ASTAC-controlled MH60 now has dipping sonar capability. To order the MH60 to dip, assign a Fly-To waypoint where you want the helo to conduct a dipping search. When the helo gets to the waypoint, the helicopter will stop and descend to 45ft, at which point its dipping sensors will become active. To stop the dipping procedure, assign another waypoint and the helo will go back up to speed and go back to 300ft. The helo has an active dipping sensor (which of course can be heard on submarine active intercept) set at 45ft of depth. The helo also has passive sensors set at 45ft, 600ft, and 1400ft. All sensors are active at the same time; there is no waiting for the sonar to be lowered. To compensate for this efficiency, we have reduced the sensitivity of the AI sensors on the MH-60.

About the P3 2000lb mines changed in CAPTORs:

 

The 2000lb mine has been replaced by the Mk60 CAPTOR antisubmarine mine. The CAPTOR has a passive sonar equivalent to a VLAD sonobuoy and will fire a Mk 46 torpedo at any hostile submarine detected within 4km. The CAPTOR has the ability to classify between hostile and friendly subs and only engages hostile subs; this was done because there is no way for the player to program the weapon to engage only contacts matching certain sonar profiles, as would be done with the real CAPTOR. The CAPTOR requires ROE set to Wartime to function

I have highlighted what I beleive are the relevant parts with a bold font.
Hope it helps.