Model battleships are put through their paces.
A model of the "Renown" battleship sails on the water.
C/U of the top of the model boat. The top of the model is lifted off then replaced. C/U of moving propeller. The boat is placed into the water - man sailing it is dressed in naval uniform. The motor is attached and the boat moves off. The boat fires guns. "H.M.S. Wrestler" - model of a destroyer is also shown. It also has firing guns.