That was an early FotRSU experiment, but I left it when I was able to annihilate several sampans with one shot each. The problem with the shots is the fusing... you cannot set it yourself, which limits the practicality of doing that, but US subs did use AA ammo for anti-personnel also. We just left them in there, but for a sampan, you do have to be at just the right range - which I do not remember... 2500 yards?? It sure would be sweet to be able to send some 5" AA downrange on a zero, but your gun crew indeed will not do it... The irritating thing is that the AI subs will... sigh - what a game, eh?
btw, for the sampans, shoot 'em first, then ram them. You might clear the gun crews from the deck first. If you just ram them outright, you do not get the credit. Just be careful that you don't ram something with fuel or ammo on it...
