Hello everyone,
I apologize if this has been asked before but I couldn't find any definitive answers. I'm wondering the proper areas that each of the two forms of ammunition (AP and HE) should be used for maximum effectiveness. Basically what I'm looking for is a guide showing where I should be aiming on a destroyer/merchant/battleship to disable or destroy with the least amount of shots.
I understand aiming for the waterline with AP will help to sink, and going at the control room with HE will do some good damage, but other things like where exactly the engine compartment is and such of the different ships to disable movement would be really helpful. I would love to be able to stop several ships (notably destroyers), and then slowly hunting the merchants they were guarding.
If you could add pics that would be even better (rather than just saying aim 1/3 back from the front). Or at least be dumbingly specific

, such as saying aim directly below the exhaust stack-like thing (sorry guys I don't know the proper terminology).
And please specify the proper munition to use (and if possible why). I.e. aim for the propeller but use the HE round instead of the AP round for better effectiveness....
Thanks all in advance.