Full title reads: "Off Portland. 'Our Sure Shield' Dominion Premiers visit Atlantic Fleet and see striking demonstration of naval power."
Off Portland, Dorset.
Views of various warships of the British Royal Navy on manoeuvre. Different kinds of warships in action. Shots of a ship dropping depth charges and the explosions in the water.
Small biplanes take off from a aircraft carrier. Two planes fly past various ships.
N.B. This film is quite dark and scratched.