Thanks Templar ! That worked ! It looks BEAUTIFUL.
Hope it has DEPTH as well as good looks.

Captain Fishpants, I'm guessing you guys have gone through all the naval games. If you have'nt one I'd highly recommend trying out is Silent Hunter 3, unmodded first, for simplicity. Then modded with the GWX (Grey Wolves X) unofficial modification expansion pack. The reason why I'm mentioning this is that you can get a lot of ideas about hydrophysics (bouyancy etc) from this game and particulary form this modification to that game. Even though the game is set in WW2, the basics of the physics engine can probably be of help to you.

Best of luck with the new title !