Item title reads - 'Rough sea' on land.
Helicopter platform simulates heaving deck of ship. Royal Aircraft Establishment (Naval Air Department). Bedford, Bedfordshire.
Various shots of the platform moving around at different angles. Various shots of a Westland Wasp helicopter coming in towards the platform. Various shots as it lands on the platform and stays there as it rolls about. M/S as it takes off again. Various shots showing the mechanical parts of the platform. C/U dial with needle showing the various angles of the platform. M/S platform. Various shots as the helicopter comes in again, it hovers then lands.