Pi Super Yachts in the UK has announced that the design of its Power Dragon 30, a 30m motor-powered trimaran, will be launched at the upcoming London Yacht, Jet & Prestige Car Show in May. The new concept is the first motoryacht under the Dragonship range and one of five designs that the Devon-based company is set to unveil within the next 12 months.

The design follows the zero-to-low emissions technology that embodies the Dragonship range. Other concepts joining the fleet include two sailing models and three motoryachts, all built in aluminium at the shipyard’s production site in the Netherlands.

“We anticipate that the Power Dragon 30 will achieve 28 knots max and cruise at 15-18 knots. We are in touch with a number of new technology companies helping us to achieve our targets of low emissions and high speeds,” Will O’Hara, Pi founder and director, told SB.

Dragonship concept
The Dragonship range has been conceived to provide performance and comfort. The concept aims to create a series of emissions-free trimarans.

The exterior design styling and propulsion ideas are work of Pi Super Yacht founder Will O’Hara who partly owns Hydrogenisis Ltd, a company that has been actively researching the production of hydrogen from seawater. He has passed the information to naval architects who have refined the concepts. Claire Rendall has designed the interiors.

Dragonship 80, the flagship 80m trimaran concept, was presented to the market in early 2014. She is a three-mast vessel with five decks, powered rotating masts, aerofoil sails and folding amass. Charter-friendly, she accommodates 12 guests in six cabins and a crew of 17. The smaller sailing trimaran in the range is an 82-footer (25m).

Eco-friendly technology
Designed to provide near zero carbon emissions, all sailing vessels in the Dragonship range are equipped with solar, wind, propellers and low emission generators to charge large battery banks. These are integrated into an Autosail wingsail, a rig created by Jack Manners-Spencer back in the 1980s. It is similar to the wing masts used on the America’s Cup AC72 yachts.

“We are still researching [Hydrogenisis] technology, which could be some years away. When the technology works sufficiently well we will install this into the Dragonship range,” O’Hara told SB.

The Autosail rig relies on a powered rotating mast, which supports the aerofoil section sail and rotates the sail surface to achieve the most efficient angle to the wind on any point of sail. The all-electric propulsion onboard uses fast-recharge batteries with charging from solar cells integrated into the fabric of the Autosail.

The vessels carry two generators, one on each amass, that are connected to an inverter. When running on sails, the electric motors act as generators with the rotation of the propellers. “The combined energy-generation sources create sufficient energy to run the vessel. Large battery packs will also store the energy,” O’Hara explains.

“The wing sail itself contains solar cloth which we will have additional information on at the show,” O’Hara says, adding that tests have shown that the yacht achieved very low emissions in the hybrid form with generator usage of around 1 hour per day when the yacht is in full use offshore.”

Pi Super Yacht production facility is based in the Netherlands and has a construction capacity of four yachts per year. O’Hara told SB that order times are estimated to be around 14-18 months.

The Power Dragon 30 will be followed by the launch of Winged Dragon 35 (35m sailing trimaran) and the Power Dragon 40 (40m motor-powered trimaran). Also in the drawing board are a 50m twin-mast trimaran and a 60m motoryacht.