The newly expanded Hudson Yacht Group factory on the waterfront in Xiamen, China spans more than 1.2 million square feet


solution to electric power management, which is vitally important for all extended range racing and cruising boats when the primary means of propulsion is sailing. While traditional yachts rely on the main engine and/or a generator to provide this, it comes at a high cost in excessive weight and emissions for a performance-oriented catamaran. The EcoDrive system helps solve this


problem as a robust and redundant hybrid electric/diesel propulsion system designed to bring the benefits of an electric drive (eg silent fume-free motoring, instant torque for manoeuvring, and hydro- regeneration of batteries while sailing) with the reliability of a trusted diesel engine. Nearly all of the 40 HH44s and


HH52s currently on order have included this system. Depending on boat size and sea state,


the power output from EcoDrive and the battery storage capacity are, on average, designed to conservatively offer one and a half to three hours of silent, fume- free electric propulsion without requiring the owner to carry an unnecessarily large battery bank. This should be more than enough time to leave the marina or anchorage, hoist sails and regenerate power as you sail away. And this power is available not only just for motoring purposes: the power delivered by the


‘Building 100-plus HH44s per year is not out of the question’


hydro-regenerators combined with 4.2 kW from the roof-top solar panels in this system are able to generate up to a combined 50 kW of power stored in lithium batteries that are available for all the other common uses on a luxury catamaran – even air conditioning. Compare this with a


conventional genset which delivers only 6 kWat a weight cost of over 400 kg plus the fuel weight – the choice for EcoDrive seems obvious. And working closely with their electrical engineering partners, HH Catamarans has developed user interfaces that can easily control a variety of functions in the 48 V �


The production line is amajor operation with 22 yachts currently in build SEAHORSE 77


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