Quote Originally Posted by Lusted
From the sounds of your post you have no idea how complex that would be. It would be adding a third engine into the game - and thats a huge amount of work. That's gonna be in a patch or an expansion, it would only ever be in a new game, and im not sure CA will ever add them in due to how much more complex it would make the game - 3 engines to work on, 3 engines to make ai for, 3 engines to debug. And that might give you some idea of why it was left out. Devs don't just wave a magic wand and suddenly a fully working naval 3d egnine appears, it would require years of work.
They better get started then.