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First J-class yacht with WhisperPower hybrid propulsion system launched

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First J-class yacht with WhisperPower hybrid propulsion system launched

14/03/2012

Holland Jachtbouw has launched the J-class yacht Rainbow at its yard in the Netherlands. Based upon the lines of the original America’s Cup winner in 1934, this spectacular 40-metre J features the unique WhisperPower hybrid propulsion and power system. Rainbow is currently being stepped and sea trials will commence this month as she gears up to compete in this summer’s regattas, including the J-class races in England.

Launching a full hybrid propulsion & auxiliary power system
In close cooperation with Holland Jachtbouw technical director Arjen Zijlmans, a state-of-the-art Hybrid Power and Propulsion system was developed by Dutch power system's specialist WhisperPower BV, making this 40-metre yacht the first FULL HYBRID pleasure sailing yacht of its kind. “I am proud to be the first super yacht builder launching a full hybrid propulsion and auxiliary power system, which is really engineered as total system and not a combination of components supplied by various companies. The cooperation with WhisperPower and it’s subcontractors really worked out well”, says Arjen Zijlmans.



Operated entirely on her Hy-Store Li-ion batteries
This hybrid solution replaces the conventional main engine and two generator configuration found on other Js, which have a larger engine room than the comparatively lighter Rainbow (170 tonnes). The main engine replaces the second generator, while the remaining generator is a variable speed unit. The main engine generator can also act as an electric motor that can also run the propeller. This solution is smaller in size and saves on fuel. The batteries can also be charged while sailing without losing more than 1.5 knots of speed. Rainbow can be operated entirely on her Hy-Store Li-ion batteries, including sailing, navigation and hotel load. This also meets the owner’s request for silent periods onboard, without generators running, from 11 pm to 7 am. And that in turn promises much for those who enjoy cruising and, potentially, chartering Rainbow.

30 percent reduction in the fuel
Other key overall benefits of this innovative propulsion solution include a dramatic reduction of the ecological footprint, a 30 percent reduction in the fuel required to generate the hotel load, and a similar reduction in the maintenance costs for the power plant in hotel load. Redundancy is built-in with five power sources available: The hybrid battery, the variable speed generator, the variable speed engine generator, the shaft generator (when sailing) and shore power (when available). There is also a substantial reduction in audible noise levels both inside the yacht and out. “The Hybrid system we jointly designed with HJB, is in compliance with the highest industrial standards and Lloyds approved”, says Martijn Favot, CTO of WhisperPower and leader of the Hybrid project.

Source: bymnews.com


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