I did a little search and found some info on Wikipedia and the trailer to that movie. There is an american atomic sub that gets stranded somewhere close to Cuba.
They send a Navy Seals team to a mobile drilling rig to recover what's left from that sub. Things go - as you would expect - awry due to some issues with the leader of the Seals team who catches some sort of diver's disease.
Shipwise, well there is a morphing non-human being that seems to have taken the form of something that might resemble distantly the Corsair at some point, but from that short glimpse the trailer gave, it looks more like a giant manta ray. The human ships are all as expected, a submarine and a small submarine.