Aiming and 'shooting from the hip' can be accomplished two ways -
1. just go to TDC, set manual and observe your target on the TDC screen!
2. As I already suggested - set your TDC to 'manual' and turn your boat to aim and just hit fire (enter) when you are ready
Of course you can do these things in camera mode (F12) and use the little'orange' marker as your sighting tool!
Anyway this link will probably set you right:
http://www.paulwasserman.net/SHIII/#...bservations%20
Happy Hunting Herr Kaleun!