Adastra Brochure
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boats The 42.5m Trimaran is being built for a Hong Kong client for long range ocean voyaging . “Adastra” is the result of more than 5 years of design and discussion with the owners, to build a yacht that meets the needs of a very experienced ocean voyaging couple and their family, and to provide the level of comfort and style that would be expected in a yacht of this class and size. No effort has been spared in the challenge to produce a beautiful yacht that will have low fuel consumption and yet provide excellent sea keeping qualities and luxurious accommodation. “Adastra” takes the power...

LOA Beam Hull Draft Main Engine Outrigger engines Generators Owner & Guests Crew Tenders Freshwater Capacity Displacement Light Cruising Max Ocean Passage Max Speed max Range at 17 knots 42.5 m 16 m 1.12 m (1.6m to tip of rudder) lx Caterpillar Cl8 -1150 hp @ 2300 rpm 2x Yanmar 1 lOhp @ 3200 rpm 2 x 36 kw custom in the outriggers linked to 110 Hp Yanmar engines, and lx 26 kw Northern lights in Main engine room 9 persons 5-6 persons 4.9m stored on the aft deck and a 3.1 m stored in the garage 2x 800 gph fresh water makers - 2700 L water 49 tonnes, Fully equipped and full stores and crew, no...

McCONAGHY McCONAGHY

McCONAGHY McCONAGHY

McCONAGHY boats

Image: © John Shuttleworth Yacht Design Ltd Tri just a Little Bit Harder A Conversation with owner Anto Marden By Tork Buckley McConaghy Boats Zuhai was the unexpected surprise of my Chinese trip last year. Following trips from Australia to Zuhai I found a vast Aussie-owned yacht factory in the region. There amongst foil moths, match racers, carbon parts and mini maxi Alfa Romeo’s new hull was an unusual 41-metre motor Trimaran in build. The owner is a very experienced yachtsman and ship operator living in Hong Kong. Here I chat with him about the project.

That’s a very interesting project you have over in China... AM: Yes, it’s been going for quite a long time actually. 30 years ago when he was still living at home with his mother, John Shuttleworth designed me a 45-foot sailing trimaran, Mazinga. He charged me £1,000. I had her built by a couple of hippies in the south Philippines. They were cruising around, up to no good, swallowed the anchor and went ashore to build two boats. One was called Airmail, a Kelsall catamaran design; the other was Mazinga. John was working for Kelsall at the time, then he went out by himself and we built...

(Nigel in fact drew a 40-metre monohull Hang Tuah for Anto that would also be built in China [and is indeed now finished]. It conformed to Nigel’s LDL, or Low Displacement to Length ratio concept.) How did the concept for Hang Tuah come about? AM: I originally wanted to build the tri in steel and aluminium, but there were weight considerations and John doesn’t know much about aluminium construction. Meantime Nigel said, “Forget the pontoons, let’s just build a really long, thin narrow monohull with a steel hull and aluminium superstructure.” He went ahead and drew it and it looked...

It was composite by now? AM: Yes, it nearly went to carbon fibre, but we luckily decided against that. It would have been possible, if a bit more expensive, but John had already designed it in conventional composite and didn’t want to redo it. I heard that McConaghy were building America’s Cup boats in Dong Guan and I tracked them down there. I brought a drawing of the boat and that’s when I first met Mark Evans. He was in Dong Guan, then in a joint venture with a Hong Kong/ Chinese company that was making carbon fibre surfer parts. Mark said, “I’d love to build your Tri but I don’t think I...

I presume it’s very efficient; you’ve not much wetted surface area? AM: Yes, it is also a very long waterline length. We’ve got a single screw on a single 745 kW Cat engine. Do you have a “get-you-home” system? AM: The thrusters are supposed to give you 6 or 7 knots in flat calm, of course in any sort of sea they won’t. But I’m quite used to one engine. Normally if you have two motors they conk out at the same time, from either electrical or fuel problems. No one really has a completely dedicated separate fuel system for each engine; so if you’ve got gunge in the fuel it gets to both....

MARCH-APRIL 2010 Hong Kong. China Singapore Malaysia Thailand Indio Indonesia Australia New Zealand

MCCONAGHY’S CHINA McConaghy's made a name for itself building top-flight maxi racing yachts from its Australian base. Then, in the early 2000s, the company began the process of opening a production facility in mainland China. Now settled in Zhuhai’s Pingsha Yachtbuilding Park, McConaghy's has set some hearts afire in the Asian racing scene. Its first foray was in Dongguan in 2005, later moving to Zhuahi in 2008. While racing yachts continue to be the focus of McConaghy's (GM of China Mark Evans is quick to point to the fact that McConaghy's built boats took the first three podium piaces in...

Future perfect I ** ^ STRIKING 42.5 METRE TRIMARAN ^SUPERYACHT BEING BUILT IN CHINA COULD SPELL THE FUTURE FOR EFFICIENT LONG-RANGE CRUISING... One of the world’s most amazing superyachts is under construction in China. Based on a trimaran hull, the 42.5 metre Adastra will be the largest trimaran yacht ever built when it is completed and it is designed to have a full ocean-going performance. Adnstra is being built at McConaghy Boats in Zhu Hai in China and comes from the drawing board of John Shuttleworth Yacht Designs. Trimaran hulls have previously been used by more extreme craft such...

concept further than has ever been attempted before,' says Shuttleworth. The challenge of turning this concept into a viable luxury yacht has taken us to further research and to develop new thinking on stability and comfort at sea for this type of craft. We have carried out extensive tank testing and used radio controlled models in waves to analyse stability and performance.' McConaghy Boats was chosen for the construction of this revolutionary design because of its proximity to Hong Kong and its experience with advanced composite construction. The Chinese yard is a subsidiary of...