Saw "Black Sea" this evening. Enjoyed it, but am kind of a sucker for Submarine movies.
This movie was a bit shallow (sorry), but it was a fun ride. The story involves recovering lost Nazi gold, Russians, yada yada, you have heard it before. The plot isn't that important.
A good sub movie should leave you with a tense neck and shoulders. It is about just how stressful it can be when in such close contact with other human beings. How frightening the cold and pitch black abyss of the ocean is. How disconnected you are from any hope of rescue or aid. This movie delivered on all these fronts, so altogether, as a sub movie, it was a good sub movie.