Yamaha HARMO: electric propulsion rethought
Yamaha's launch of the HARMO 2.0 at the METS 2024 trade show demonstrates the importance of electric marine propulsion for the Japanese manufacturer. This motor combines quiet operation, intuitive maneuverability and broad adaptability for various types of craft, from cruisers and fishing boats to water cabs. We were able to climb aboard for a short test run on a calm stretch of water.
Designed for multiple applications
The HARMO 2.0 features a fixed "drive head" and a baseplate that pivots underneath. The rudder angles can be very wide, offering excellent maneuverability. Our test aluminum barge was powered by 2 HARMO 2.0s installed wide apart on the transom.
The motor is steered using classic Yamaha outboard joysticks. This electric motor comes with Digital Electric Steering, which can also be connected to a joystick. With it, you can steer the boat with great ease.
Advanced features for optimized navigation
Yamaha has integrated its Helm Master EX system into this model, the same system used on gasoline outboards, with functions such as autopilot and precise SetPoint positioning. Joystick control simplifies navigation, especially in tight spaces.
Quiet and powerful: ideal for natural environments
On test, the silence is particularly surprising. With virtually inaudible operation, the HARMO 2.0 offers excellent performance on enclosed waters. Indeed, this torquey motor quickly accelerates and propels the boat to its maximum speed. However, this speed is quite low: with 2 x Harmo 2.0, we reached a top speed of 9 km/h (5 knots). Interestingly, the rev counter never exceeds 1000 rpm (970 rpm at top speed).
Caged propellers don't promote speed, but guide water flows to increase thrust. Hence the deliberately low speeds of this model. This motor can also be used for trolling or on fishing grounds when following a drift, all without any fish-scaring noise.
The Harmo 2.0 runs on 48-volt batteries. It's equipped with a fast charger that recharges the entire battery pack in 4 hours. For the test we had 2 battery packs for each motor, each with its own dedicated charger.
