THE GREEN BOATER · video

What this video covers

Joe Grez, founder of EP Carry and a product developer with a physics background who has built electric outboards since 2009, delivers a structured seminar recorded at the Seattle Boat Show on how to choose an electric outboard motor.1:29 He covers use-case analysis first: whether the motor is the sole propulsion source or an auxiliary, whether the boat is trailered or kept on a mooring, and how each scenario shapes charging strategy — shore power at 220V/40A, solar (he runs 300 watts of solar on his own boat and achieves 35 nautical miles per day in summer), wind generation, and mothership charging for dinghies.4:35 He explains why displacement hulls need large-diameter props (his dinghy motor runs a 13-inch prop) for efficiency while planing hulls and high-speed applications favour smaller props or jet drives.12:38 He breaks down rating systems — horsepower, equivalent horsepower, watts, pounds of thrust, and propulsive power — explaining why horsepower comparisons between gas and electric motors are unreliable and why propulsive power (thrust × speed) is the most meaningful metric.15:23 He notes electric motors can run at full power without overheating, unlike gas engines.8:39 Motor types, general cost segments, battery inclusion, manufacturing origin, availability versus reservation-only status, and longevity factors are flagged as evaluation criteria.2:26 Resources are posted at epcary.com.13:46

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