Sorry to say that I know know why this went directly to DVD. This film is not vintage Steven Seagal at his finest. He character in the film almost seemed like he was tired. If you like "shoot em' up" films just for the firepower then this is the film to see but if you enjoy an action film with a flowing story that makes sense then you're going to be horribly disappointed. Without giving anything away, right from the beginning you wonder how, under his current legal circumstance, he was picked for this mission. They don't explain why. If I directed this thing I would have at least had a line in the film saying "we can't trust anyone other then someone that has been locked away from the rest of humanity for quite sometime" which would have worked. The film went downhill from there. Even the film's title didn't make sense. It leads you to believe that the film takes place on or about a submarine which it does not. The submarine scene really had nothing to do with the plot. At one point one of his men say "we are submerged" hence the film topic. Point is that even the title wasn't suited for this film nor was the film suited for me. Mr. Seagal did one quick Martial arts scene in the entire film. Not what I expected from a marital arts action star. Many of his lines were vintage Seagal one liners but were very dorky. Sorry Steven but this is not your best work. I was very disappointed with this film and honestly I suggest keeping your money and renting one of his other films.