Demonstration of the Dowty Turbocraft jet speedboat at a lake in Cirencester.
Donald Campbell drives new Dowty Turbocraft, he tows water-skiing champ David Nations.
Dowty turbo-craft on Thames driven by Campbell.
Speed ace - Donald Campbell - puts his boat 'Bluebird' through its paces at Ullswater.
New jet boat without propellor or rudder is demonstrated in Florida. America.