The UI has a really cool theme, but maybe I think it is a bit too much detailed in some places, which makes it difficult to read it. The buttons in the main menu are hard to read, in my opinion, because of the details that are directly behind or near the text ("Customized"'s bandana, "Exit"'s bones). I tried to compare with Anno 1404's UI, and I feel like the game's UI could be slightly more sober, but maybe it is because I prefer this kind of UIs.
The sound of a bullet crashing into the hull is a bit disappoiting. I feel like improvements could be done to make the feedback of a bullet hitting and a ship being destroyed more "powerful" for the player.

The songs are really cool !