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Pirate Legend
I just ran across this one over on the IndieDB, it's called Indie Pirates: The Game, and has apparently been in development for a few months now. The game is being developed by Wild Beauty Software using the Unity 3D engine; and it really looks pretty good considering just how early they are in the development process. I haven't been able to find out a whole lot of information, other than what they have posted on their IndieDB page. According to the developers, Indie Pirates: The Game is the ultimate pirate simulator, and will draw you in to a world full of bandits and noble folks. Trade and fight other pirate leaders, intercept caravans full of treasure, enjoy fishing the open seas and much more.
You can find out more about Wild Beauty Software over on their official blog HERE, and you can follow them on Twitter.