a a former submarine sailor and this be the most pathetic submarine movie i have ever watch . a friend buy it for me a a birthday gift and i felt obligate to watch it . apparently and it be too difficult to round up anybody who have ever serve aboard a submarine to correct a few of the several hundred mistake . have they ask someone like me and this may have turn out to be a fair movie . dudikoff character be suppose to be a navy seal . he sure do not fight like a seal and especially when that woman be kick his a. furthermore and the ocean be pretty deep once you move away from the continental shelf . submarine be not able to cruise around along the bottom of the ocean . they try to stay away from rock and stuff that might damage the hull if you be to accidentally run into it . also and with the intense firefight near the end of the movie and i think it be amaze that not even a single bullet ricochet . finally and ssn submarine do not have vertical launch tube and ssbn submarine be the one with vertical launch tube . i appreciate my friend give my this gift and but i will never get these 90 minute back .