Even more salient than heightened efficiency is CMD’s space-savings breakthrough. Gearbox and jet housing have been combined into a single, compact component. The only question I have is why didn’t someone think of that before? The elegant less-is-more design shortens length overall by a full two feet. That feature pays big dividends in usable space onboard. Just as important: no clumsy jackshaft is required.

Why might you consider a jet drive? With minimal draft and no exposed propeller blades, jet drives are invaluable for shallow water operations where rocks and other submerged debris are a hazard. Swimmers also feel more comfortable in the water. Should CMD’s new pump ever foul, simply flip open the top inspection port and clear away the accumulated trash.

Just like a conventional stern drive, a single lever operates both throttle and shift. For easier handling and emergency braking there’s a hydraulic reverse bucket, that when deployed, interrupts the flow of water. It’s just like the trust reverser on a jet plane. Another nice touch is the integral power take off (PTO) typically used to power hydraulic pumps and an electrical generator. Engine riggers will appreciate the way the PTO is positioned on the rear of the gearbox with pump mounting holes both port and starboard.

Suitable for single engine boats up to about 26 feet and for twin engine applications up to about 36 feet, CMD will initially offer its new jet drive powered by a 120 horsepower diesel. But by the end of the year look for the lineup to include models rated up to 250 hp.

 and you risk blowing yourself out of the water. You decide.

For more marine engine stories:

  Marine Engine Digest Home Page