A border boat runs along the coast. Seascape. Klyuchevskaya Sopka. Vladivostok port. Warships in the bay. The commander of one of the ships gives commands. Red Navy man at the torpedo tube. Seaplane flight. Aircraft of naval aviation in the air. Submarine dive. Engine room. Submarine crew at lunch. Torpedo launch. Pop-up submarine. Preparing the boat for battle. The ship "sea hunter" is throwing a depth charge. Shooting from guns. The exit of the torpedo boats. Aircraft in the air.