surprisingly good and quick witted adventure that feature kelsey grammer ( supposedly in his first lead role in a feature ) a an unconventional navy sub commander who want to run a nuclear sub of his own and however while he have earn it by compete against the u. s. navy in a series of war game with a crew of untested and questionable and and lovable men ( and a woman and too ) . director david s. ward ( major league ) and his writer have put together a hysterically clever and upbeat comedy that try to make the film easy to understand and which they do quite well . second and besides the grammer character and most of the crew provide some or plenty of the movie humor and which be treat like a double edged sword . three member of the support cast harland williams and toby hus and and rob schneider provide the funny scene and which include weird gesture and impersonation and and and well and their personality . down periscope be more than a navy version of police academy or the dirty dozen . what the film do be get the job do the right way and i like it .