Although not widescreen enhanced and now 10 years old, the video quality is great.
Color is excellent especially inside the submarines.
Some artifacts, noise and grain can be seen in some scenes, but nothing too distracting. You'll get some low frequency effects and use of the rear speakers to keep you entertained, but not too over the top here. Well, you get a trailer. This is common for movies released prior to DVD's existence. This is by far one of the best submarine movies ever made.