I have watched this movie yestarday, I liked and disliked at the same time. If you consider this is a "submarine" movie, you will be dissapointed since there are lots of un-reality in it.
You can check for factual errors about this movie on IMDB, since I dont want to give spoilers I will not write here...Beside the errors, I doesn't give you anything about life in a submarine.
For the good parts I liked, the plot is good, just take in hand "Chain of Command" thing and leave the rest, consider the submarine is just a background for the story.
To finalise, I will say I dont consider this movie as a submarine movie,because in that case it is one of the worst sub movie I have ever watched, I consider this is a movie on "Chain of Command" and on military rules or situations, it is a good one
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