The actual submarine that was used in the movie can be toured.

Rating: Null/10 (11 September 2004)

This is a good action movie based on fact that I would recommend to be seen. The history of what went on was probably deplicted of what went on. The one problem , like other movies of this type, is the viewer does not know what was added to enhance the movie. I don't think anybody knows what to take at face value what actually happened and where to draw the line. The actual submarine that was used to film this movie was a Sierra that has a history of its own. It is on display and can be seen and toured in Providence RI. The two main differences between this sub and the one in the movie are that this submarine was a powered by a diesel engine and the periscope went the opposite direction as was deplicted in the movie. If anybody is into military history etc. they should tour this submarine to see how our adversaries lived and functioned.