Summary: Film on the Royal Navy, beginning with scenes of the Grand Fleet anchored at Scapa Flow; a Resolution Class ballistic missile submarine passes through on the surface and the narrator explains the significance of Portsmouth and Plymouth in the history of the Royal Navy, and in the present day service. The continuity of Royal Navy tradition is described with reference to Drake, Nelson, the introduction of steam propulsion and the role of the Navy on D-Day. The film emphasises the complex and technical nature of the modern Royal Navy; to illustrate the point a Type 42 destroyer replenishes at sea with the Royal Fleet Auxiliary ship RFA Green Rover (A.268), the Type 42 destroyer HMS Sheffield (D.80) launches her Lynx helicopter and the aircraft carrier HMS Ark Royal (R.09) launches a Phantom aircraft. The film ends with a description of the demands of the submarine service, the role of the Navy in NATO and its importance in protecting the United Kingdom from invasion.
