Well I ran across this searching the US Patent database.
Well, well. How nifty does this sound? Does anyone know if anything ever came of it? Was there an actual product?
This was filed in 1976..
Air powered water propulsion method and apparatus
Abstract
A vessel operable by a diver for use in towing himself has an air motor powered by the diver's air tank. All or part of the air used by the diver passes through the motor. Air used by the motor in excess of air needed for breathing is exhausted into the vessel wake to reduce drag. A manifold, connected to the diver's air breathing means and to the tank, provides air connections to the vessel during towing operations and is quickly detachable and provides connection from the tank to the air breathing means when the diver operates away from the vessel.
Well, well. How nifty does this sound? Does anyone know if anything ever came of it? Was there an actual product?
This was filed in 1976..