(Mute print only of) public relations film about the activities of the Royal Navy.

Scenes include submarine sequence, in-flight RAS (replenishment at sea), personnel installing electrical supply in a Hong Kong village, and operations: bridge destruction, Royal Marines assault. Ships featured include HMS Hermione, HMS Ark Royal, HMS Albion and HMS Vidal; also features shots of helicopters, F2 Phantom fighter and a Gannet AEW aircraft, as well as missiles (Sea Cat, Seaslug, Sea Dart and Polaris).