I played Enigma Rising Tide too - nice storyline driven campaign, but its not dynamic. Good graphics for the time though and the later sea battles in the campaign could be pretty intense.

I'm looking forward to the release of Distant Guns. A 3d naval RTS set during the Russo-Japanese War 1904-5. Here's the website for more info.http://www.stormeaglestudios.com/public/home.html