Footage of warships of the Dover Patrol at wok in the English Channel.
Full titles read: "WITH THE NAVY"
L/S of a warship of the Dover Patrol in the English channel. L/S's of numerous warships. M/S of destroyer. L/S's of large merchant ships crossing channel. L/S Men at their stations on destroyer, i.e. manning depth charges, torpedo tubes, anti-aircraft guns and look-outs on bridge. Several shots of Contraband officer going aboard merchant ship and inspecting its cargo.