Great game! I usually dislike RTS games, but this one made me have a good time! I wonder what does the game have to do with the sea theme, though. :/ Also, I didn't like personally that the game needs to be installed...
From my understanding, the theme was either sea or space ("sea/space") but i might be wrong about it (hope not). And I went for the installer because I want to further develop the game and it would be better