I agree with Matias. The only angles I find "useful" for the game are straight (0°), diagonal (45°) and FAR (22.5° and 30°).. Other angles are cool and all but really only suit the game for a tiny few situation.
Absolutely nice models btw. Very interested in those large ships you're doing. BTW when you render them and test them ingame, would it be possible to let us know if they appear "in" the water or above it? And what settings you used for them to appear in.