Adding a new crew voice line - Possible?

[Wolfstriked]

I have tweaked some sounds here and there and found on my game.Simple stuff like "yes sir" for weather reports.What I found is that if sound file is not there then there is no way to make it work.If you go thru speech folders you will not see sound files for raise snorkel etc...only snorkel depth,snorkel damaged,snorkel destroyed.