I've just watched 'The Cruel Sea' again. I never get tired of it. Understated, simply told, well,paced and based on a great book by Nicholas Monsarrat who is on of the smoothest writers I have ever read. A couple of years ago we spent a day in Halifax, Nova Scotia, and I spent a happy couple of hours on HMCS Sackville, the only surviving flower class corvette. How 85 men could have sailed the Atlantic and fought on such a tiny ship is beyond comprehension.
http://en.wikipedia.org/wiki/HMCS_Sackville_(K181)