Under Siege

Under Siege is a movie starring Steven Seagal, Gary Busey, and Tommy Lee Jones. An ex-Navy Seal turned cook is the only person who can stop a group of terrorists when they seize control of a U.S. battleship.
Disgruntled ex-CIA operative Strannix, his assistant Krill and their group of terrorists seize the battleship with nuclear blackmail in mind. They've planned for every contingency but ignore the ship's cook, former Navy SEAL Casey Ryback -- an error that could be fatal.