I've been able to use the Granny viewer I d/l from here :
http://www.radgametools.com/granny/download.html. The animations currently in the game are just scratching the surface of what's in there. It makes me really interested to see what this thing can do. I'm trying to find how they link the various body parts with an individual crewmen so I can change uniforms, add caps, etc. It's not done the same way as SH4. There are some text files in the submarine folders that look to control animations for various states. I haven't messed with them enough to know if they do anything.
We need to find out how body parts and animations are assigned to crewmen. And how crewmen are assigned to the various places in the sub.