I don't think there are any submarine simulators for the PS3.
For Mac I think you can play Silent Hunter 4 & 5 using this:
http://paulthetall.com/silent-hunter-5-mac/. Download this "wrapper/port" then do a bit of YouTube research on how to make it work. I used to play on a Mac using this but that's 4 years ago and I can't remember how to install it properly.
Oh by the way, if you're planning to play subsims/any games on a Mac don't.ever.ever.get.the.game.on.Steam
(otherwise it won't work even with this port). Buy it from Amazon or get the DVD. Even if it says Windows Only the wrapper/port should take care of it. I've always been a Steam guy but when it comes to Mac. DON'T. Goodluck with everything.