There was supposed to be one coming out called Destroyer command or something.  I dont know more than that about it.  
Its a neglected area though.  There was a game called fighting steel about 3 years ago but I wouldnt really call it a sim.  Its of a tactical level wargame.  You control surface warships in it.  However, the graphics are dated, it uses statistical odds rather than physics to determine hits, making it more a wargamer type as opposed to simulation.  Also, there are lots of things missing.  Aircraft, land, and many other things make this not that great of a game.  Its kind of fun but it could have been so much better.  Janes Fleet command is another, again not really a  simulator so much as it is a strategy game.  The Destroyer command one is your best bet whenever it comes out I think.