Heesen Yachts of the Netherlands recently delivered what it describes as the “world’s first fast-displacement motoryacht equipped with hybrid propulsion” to its new owner.
HOME (formerly Project NOVA) is a 50m all-aluminium motoryacht below 500GT with shallow draft. During sea trials, not only did HOME exceed its contractual maximum speed of 16.3kt in the traditional diesel engine mode, but also in the hybrid ‘quiet mode’. Thanks to two 127kW water-cooled DC electric shaft motors, it also exceeded the predicted speed of 9kt with noise and vibration levels well below the specification levels.
HOME is also highly fuel efficient. At 12kt, the yacht has a fuel consumption of 98 litres per hour (excluding generators) and at 10kt in hybrid mode this further reduces to 45 litres per hour. This performance was achieved with just two MTU 12V 2000 M61 engines of 600kW each, which are smaller than those typically fitted on a yacht of this size.
This, says Heesen, is proof of the remarkable efficiency of the fast displacement hull form devised by van Oossanen Naval Architects, engineered by Heesen’s in-house specialists, and executed by Heesen’s talented team of welders.
HOME has also exceeded its range predictions, measuring 4,250 miles at 12kt – 500 more than specified and this achieved with a fuel capacity of just 45,000 litres, further underlining the efficiency of the fast displacement hull.
HOME will have its global debut at the 2017 Monaco Yacht Show in September.