EMISSIONS IMPOSSIBLE

Yamaha’s new Harmo electric drivetrain may be a rather modestly powered 3.7kW motor, equivalent to a 9.9hp petrol engine, but it is being seen as a major statement of intent from the Japanese brand synonymous with big, powerful four-stroke outboards. None of the other big outboard manufacturers (Mercury, Suzuki and Honda) have yet embraced the move towards electric motors.

Intriguingly, the Harmo is neither an outboard engine nor a sterndrive but a new propulsion package that borrows ideas from both camps. It is mounted on the transom