down periscope be not a great movie . but then again very few flick be . so if your look for entertainment instead of great wisdom this be a great movie and without the capital . no sharp sexism or graphic violence spoil this light comedy about a bunch of misfit who be assign to a antique submarine . they be set to fail their task so that a general can get his extra star . they must take on the entire u navy with it nuclear submarine . but they be underdogs and this be a comedy so you can guess the outcome . but you root for those underdog and this make it a very entertaining movie . watch and enjoy ( eight star that be ) .