The award-winning Oceanvolt SD8.6 electric motor system for sailboats
Oceanvolt is a Finnish manufacturer of electric and hybrid propulsion systems for sailboats and other marine vessels. Founded in 2004, the company is headquartered in Helsinki, Finland, and specializes in zero-emission, low-maintenance, and quiet alternatives to traditional diesel engines. Oceanvolt’s propulsion systems are widely used in cruising yachts, racing sailboats, and commercial vessels.
Products
Oceanvolt produces a range of electric propulsion systems designed for various types of boats:
Saildrive motors (SD Series) – Compact electric motors ranging from 6 kW to 15 kW, designed as drop-in replacements for diesel saildrives. These motors feature a patented vibration-reduction system and are compatible with Volvo Penta and Yanmar mounting beds.
ServoProp motors – Featuring a variable pitch propeller, these saildrives optimize propulsion and hydrogeneration, allowing for efficient energy recovery while sailing. The ServoProp 25 is designed for boats up to 70 feet (21 meters).
Shaft Drive Motors (AXC Series) – A modular system with 12 kW to 36 kW configurations, designed for larger displacement boats, including charter catamarans and motorboats. These motors feature liquid cooling and high torque output.
Hydrogeneration
All Oceanvolt motors include hydrogeneration, which allows the propeller to generate electricity while sailing. This recovered energy can be used to power onboard electronics or recharge the propulsion battery. The ServoProp 10, 15 and 25 are among the most advanced hydrogenerators, capable of generating up to 5 kW at 10 knots.
Notable projects and boats installed with Oceanvolt electric motors
Oceanvolt has partnered with several yacht manufacturers and racing teams, with its propulsion systems installed in high-profile vessels:
Baltic 68 Café Racer – A performance yacht equipped with an Oceanvolt ServoProp system, developed in collaboration with Baltic Yachts.
Vendée Globe 2016 – Sailor Conrad Colman completed the race using an Oceanvolt electric motor, making history as the first competitor to finish the race using 100% renewable energy.
Charter catamarans – Oceanvolt’s AXC and ServoProp systems are widely used in eco-friendly tourism fleets, providing sustainable propulsion for large catamarans.
