Being an ex-submariner on both diesel and nuc boats, I wasn't looking for a true to life Navy movie. I have enjoyed Down Periscope over and over again. Sure, some if not most of the realism of life on a submarine is skimmed over, but this adds to the appeal by creating a simplistic story line that is easy and fun to follow. I swear I knew most of the crew of the Stingray. The excellent cast made for an even more enjoyable movie. I don't want to get into specifics about little things that may not have been correct because that would only serve to detract from what I feel is an excellent movie to enjoy for its entertainment. So sit back, relax and "Let's kick this pig"