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  • Boat of the Week: Inside ‘Adastra,’ the Bonkers, Rule-Breaking Trimaran That Has Crisscrossed the Globe

The 140-foot "Adastra"'s triple hulls, light weight and shallow draft gives it exceptional seaworthiness and range. Plus, it looks super cool.

Miriam cain, miriam cain's most recent stories.

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Adastra , or to the stars , as the poet Virgil once said, is not your average superyacht . With its striking spaceship profile, it might look like a concept. Delivered in 2012, this 140-footer has spent nearly a decade exploring the globe.

“We have been lucky enough to spend at least three months on board every year since the build, crossing the Atlantic and Pacific Oceans, and exploring the more traditional cruising grounds of the Mediterranean and Caribbean,” the owner, requesting anonymity, told Robb Report . “ Adastra is a truly stable and safe oceangoing yacht.” It also happens to be one of the most innovative vessels on the water.

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The shipyard that built the ‘titanic’ has filed for bankruptcy.

British designer John Shuttleworth has won multiple awards, not to mention nonstop praise, for Adastra . What sets the boat apart are its unusual trio of silver hulls that resemble an outrigger canoe. “The structure is a major engineering achievement,” says Shuttleworth in a video describing the design. “Nobody had ever designed or built a boat like that.”

Adastra is a 140-foot trimaran designed to travel the world.

This one-off design maximizes interior space but has a minimal eco-footprint compared to other yachts its size.  Courtesy Burgess Yachts

Built by McConaghy Boats in Zhuhai, China, the custom design went through structural analysis, while a computer model of Adastra was tested for wave impact, slamming and the potential durability of the outriggers running through big seas. Constructed from e-glass and Kevlar, these hulls are mated to a carbon-fiber superstructure, so the boat weighs only 49 tons, or the equivalent weight of a 60-foot conventional yacht. Since weight reduction was critical to the trimaran’s performance, McConaghy custom-designed all the components—hatches, port lights, ladders and hinges—to be made of carbon fiber. This lightweight design delivers hydrodynamic efficiency, stability and performance, as well as low fuel consumption and low environmental impact. “It uses a seventh of the amount of fuel” of conventional motor yachts its size,” said Shuttleworth.

“Our hope at the time was that the design would represent consciousness of the environmental issues facing the world, while also giving impetus to changing attitudes towards reducing carbon emissions and fossil fuel consumption,” Shuttleworth told Robb Report .

Adastra has weathered 50-knot storms and boasts a vast 10,000-nautical mile range at 10 knots. Powered by a single 1,150 hp Caterpillar C18 engine, the boat’s top speed is 23 knots, with a friendly cruise of 17 knots. Adastra also has two 110-hp Yanmar outrigger engines to power the three onboard generators. For transoceanic crossings, the two 800-gph water makers keep the 730-gal. freshwater tanks full.

The 140-foot Adastra's triple hulls, light weight and shallow draft gives it exceptional seaworthiness and range.

The design team used its curves and natural light to full effect, with the minimalist, Scandinavian-themed interior.  Courtesy Burgess Yachts

Adastra ’s 3.9-foot draft can get into shallow areas that more traditional yachts can’t access, making her ideal for shallow-water areas like the Bahamas. The yacht also has a custom anchoring system, with three anchors that deploy across the bow, stern and along the main hull.

Despite its eco credentials, Adastra is still very much a luxury yacht. With the main hull flared over the water for additional space, the exterior layout allows guests to enjoy several secluded areas and superb communal spaces. The Scandinavian-influenced interior by Jepsen Designs, is minimalist and dominated by the natural light flowing in from curved, wraparound windows and skylights, highlighting the honey-colored woods and neutral color palette of the open-plan living areas. Adastra was designed for nine guests and up to six crew. The full-beam master cabin is aft, connected directly to the main salon, while two guest cabins and the galley are located near the engine compartment.

Adastra ’s 52.5-foot beam features a spacious aft deck with lounges and a sheltered alfresco dining area, while forward of the main salon, guests can relax on the roomy foredeck, with its large sunbed. The yacht’s garage door folds out to create a diving platform.

Adastra Trimaran Yacht

The open plan gives the sense of being outdoors, especially with the skylights.  Courtesy Burgess Yachts

Adastra is currently listed through Burgess Yachts for $10 million. Here are more images.

The 140-foot Adastra's triple hulls, light weight and shallow draft gives it exceptional seaworthiness and range.

Courtesy Burgess Yachts

The 140-foot Adastra's triple hulls, light weight and shallow draft gives it exceptional seaworthiness and range.

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Adastra Charter Yacht

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ADASTRA YACHT CHARTER

42.5m  /  139'5   mcconaghy boats   2012.

  • Previous Yacht

Cabin Configuration

Special Features:

  • Impressive 4,000nm range
  • Multi-award winning
  • Sleeps 6 guests
  • 4.8m/15'9" Tender
  • Able to access shallow bays and coves
Primed for discerning charter guests, luxury yacht Adastra offers the height of luxury living

The 42.5m/139'5" 'Adastra' motor yacht built by shipyard McConaghy Boats is available for charter for up to 6 guests in 3 cabins.

Built in 2012, Adastra offers beautifully proportioned decks for exquisite indoor/outdoor living during a luxury yacht charter .

Exterior Design

The hull of Adastra is constructed from a glass and Kevlar sandwich using Corecell foam with the superstructure moulded from a carbon fibre laminate on a Nomex honeycomb core. All the hull structures were resin infused to ensure high quality and reduce weight and virtually every part of the yacht is custom built.

Guest Accommodation

Adastra offers guest accommodation for up to 6 guests in 3 suites comprising a master suite, one VIP cabin and one twin cabin. There are 4 beds in total, including 1 king, 1 double and 2 singles. She is also capable of carrying up to 5 crew onboard to ensure a relaxed luxury yacht charter experience.

Onboard Comfort & Entertainment

Whatever your activities on your charter, you'll find some impressive features are seamlessly integrated to help you, notably Wi-Fi connectivity, allowing you to stay connected at all times, should you wish. Guests will experience complete comfort while chartering thanks to air conditioning.

Performance & Range

Adastra is built with a aluminium hull and aluminium superstructure. Powered by 1 x Caterpillar engines, she comfortably cruises at 17 knots, reaches a maximum speed of 22 knots with a range of up to 4,000 nautical miles from her 32,000 litre fuel tanks at cruising speed. Her low draft of 1.12m/3'8" makes her primed for accessing shallow areas and cruising close to the shorelines.

Adastra offers you and your guests the perfect platform from which to enjoy your next luxury yacht charter. Please enquire for details of her summer and forthcoming winter cruising grounds and availability.

With its superlative combination of luxurious styling and superb amenities, motor yacht Adastra has everything you could possibly want for unforgettable yacht charter vacations.

TESTIMONIALS

There are currently no testimonials for Adastra, please provide .

Adastra Photos

Adastra Yacht 11

Length 42.5m / 139'5
Beam 16.2m / 53'2
Draft 1.12m / 3'8
Gross Tonnage 139 GT
Cruising Speed 17 Knots
Built
Builder McConaghy Boats
Model Custom
Exterior Designer John Shuttleworth Yacht Designs Ltd.

Amenities & Entertainment

For your relaxation and entertainment Adastra has the following facilities, for more details please speak to your yacht charter broker.

  • 1 x 4.8m  /  15'9 Tender
  • 1 x 3m  /  9'10 Tender

For a full list of all available amenities & entertainment facilities, or price to hire additional equipment please contact your broker.

Adastra Awards & Nominations

  • The World Superyacht Awards 2013 Best Displacement Motor yacht of below 500GT (30m to approximately 49.9m) Finalist
  • The ShowBoats Design Awards 2013 Exterior Design & Styling Award: Displacement Motor Yachts 100′-199′ Special Commendation
  • The ShowBoats Design Awards 2013 Naval Architecture Award: Motor Yachts Winner
  • The ShowBoats Design Awards 2013 Holistic Design Award Finalist
  • The World Superyacht Awards 2013 Judges' Special Award Winner
  • The ShowBoats Design Awards 2013 Newcomer of the Year Award Winner
  • Asia Boating Award 2012 Best Yacht Design of the Year Winner
  • Asia Boating Award 2012 Best Asian Built Yacht Finalist
  • + shortlist

For a full list of all available amenities & entertainment facilities, or price to hire additional equipment please contact your broker.

'Adastra' Charter Rates & Destinations

Summer Season

May - September

High Season

Cruising Regions

Please enquire .

Winter Season

October - April

Charter Adastra

To charter this luxury yacht contact your charter broker , or we can help you.

To charter this luxury yacht contact your charter broker or

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Corporate Maldives

Futuristic Trimaran, Adastra to Arrive in Maldives Next Week

adastra yacht maldives

The futuristic trimaran was built for exploring the world and continues her round the world journey and arrives in Maldives next week.

This 42.6 metre superyacht was designed by British Naval Architect John Shuttleworth and built by MaConaghy Boats.  Adastra – “to the stars” – has been the centre of attention in South East Asia, Pacific Islands, Caribbean Islands, North and South America, West Europe, Mediterranean Countries, Saudi Rea Sea and Dubai. She has crossed the Pacific, transited the Panama Canal and Suez, crossed the Atlantic many times and is able to do so twice on one tank of fuel. 

adastra yacht maldives

Adastra  was made for adventure. Perfect for island hopping, her shallow 1.6 metre draft allows her to access hard-to-reach anchorages, shallow bays and anchor close to shore.

Adastra’s 16 metre beam makes for comfortable and stable crossing, guests onboard can enjoy the open living spaces to the fullest. The main saloon benefits from large wrap-around windows with an overhead skylight, while below, extra space has been created by flaring the central hull above the waterline. She can sleep up to nine guests in three cabins.

There are spaces for soaking up the sun on board. The foredeck is accessed through the main saloon and features a large sunbed that can be shaded with an awning suspended from carbon-fibre poles set into the deck. In the evenings, guests can retreat to the aft deck and dine al fresco, come rain or shine, thanks to a hardtop bimini and a set of sliding covers. At night, its underside glows blue, which only adds to its Bond aesthetic. 

For more information and charter requests in Maldives, please contact Ahmed Naushad at +960 7777312, or email [email protected] .

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The beautiful superyacht has an exceptionally low fuel consumption and yet boasts excellent sea keeping qualities and luxurious accommodation.

Adastra’s 16 metre beam creates a spacious saloon area on the main deck which offers superb views through a panoramic window and accommodates a lounge area, dining table, and navigation station. A forward-facing door through the saloon window gives easy access to a large sunbed on the foredeck.

The main helm station, which has seating for two, is positioned in a raised pilot house situated between the aft deck and the saloon area and forms part of the cross beam structure.

The aft deck has a sofa and bar area to port and a dining area to starboard, further aft of this there is space for a 4.9 metre tender and directly below is a garage which can store a 3.1 metre tender. The garage door has been designed to fold out and create a large swim platform.

Below deck, extra space was created by slightly flaring the central hull just above the waterline. This area has been split into two sections with a full-width master cabin located aft with access from the deck saloon, and two further guest cabins, accommodation for the crew, and the galley located forward of the engine compartment.

Adastra offers comfortable accommodation for nine guests in total and up to six crew members.

The vessel has a fully automated fuel management system which includes an Alfa Laval system for cleaning the fuel.

The anchoring system is unique, with three anchors all driven by carbon fibre drum winches run by hydraulics. The primary anchor is a custom 130kg Bruce style anchor that deploys out of the starboard wing. The bow anchor is 80kg and deploys out of the bow with a carbon fibre arm. The third anchor is 60kg which deploys out of the port wing and will be used as a stern anchor.

The yacht’s superstructure is constructed from carbon fibre with Nomex honeycomb core, the hull is Glass/Kevlar foam sandwich and the interior features lightweight oak cabinetry using honeycomb panels. To help reduce weight, virtually every aspect of the boat is custom built. This includes carbon fibre hatches, portlights, ladders and even hinges, which are all built specifically for the vessel.

Adastra takes the power trimaran concept further than has ever been attempted before. The challenge of turning this concept into a viable luxury yacht led us to further research on stability and comfort at sea for this type of craft. Extensive tank testing and radio controlled model tests in waves were carried out to analyze stability and performance. Outrigger height was optimized for ease of motion at sea, and a new outrigger shape was developed to increase stability in waves. We undertook a state-of-the-art structural analysis of all the major components in the yacht in order to achieve the light weight required for very low fuel consumption.

Today, Adastra remains one of the most iconic superyachts on the water.

“One of the world’s most amazing super yachts, that could spell the future for efficient long range cruising” Boat International

McConaghy_Boats_Adastra 42.5m (36)

Specifications

Length Waterline

Guests on Board

Displacement

Naval Architect

John Shuttleworth

Interior Designer

Jepsen Designs

Main Engine

1 x 1,150hp

Outrigger Engines

Fresh Water

Range at 17 knots

Privacy Overview

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adastra-trimaran

On board with Anto Marden, owner of trimaran superyacht Adastra

The Hong Kong-based shipping magnate and superyacht owner Anto Marden tells Dominique Afacan that, while far-flung adventures in his 42.5 metre trimaran Adastra are fun, Asia is where his heart lies...

“It’s a beautiful day and I’m stuck in the bloody office!” Anto Marden is speaking to me from North Point, Hong Kong. Clearly, though, there are places he’d rather be, most likely on board his 42.5 metre trimaran Adastra . And who can blame him? Built to cross oceans and fuel adventure, she was the talk of the town when she was launched back in 2012, her John Shuttleworth-designed lines and futuristic silhouette making her look like some very stylish aliens had dropped right on to the South China Sea from outer space.

“She’s a massive head-turner,” says Marden. “Everywhere we go, the local paper writes a story and everybody always takes photographs of her. It’s like living in a goldfish bowl.” In reality, Marden lives on The Peak, Hong Kong’s exclusive mountainside neighbourhood where residents can survey the city’s extraordinary skyline over breakfast. It’s a view that must have completely transformed since Marden was born here 67 years ago, but the Royal Hong Kong Yacht Club, which he can see from his office today, has been around since day one, and sailing has always been a big part of his life.

“Dad always had a powerboat in Hong Kong,” remembers Marden. “We used to tow a little dinghy behind it when I was a kid, so I started sailing when I was very young.” His first clear memory of boating was aged seven, in Deep Water Bay, an upmarket enclave on Hong Kong’s south side, but soon after he swapped sandy beaches for the Surrey countryside and started his education in the UK. With both parents born in Shanghai, Marden had some seriously colonial roots, but the UK clearly left a favourable impression and he later enjoyed a few years of northern grit at Leeds University, where “greasy cobblestones, flat caps and mild ale” were the order of the day.

With a degree in Chinese and politics under his belt, and speaking fluent Mandarin, the obvious choice was to return to Asia and set up shop. Marden, though, was keen to keep things interesting and, after a stint on a farm working as a shepherd, he headed out to the Caribbean to sail Spronk cats from St Maarten to St Barths . “That’s when I really got into multihulls,” he explains.

Then, en route back to Hong Kong to start working for his father, fate intervened when he met a couple of guys in the Philippines who had just sailed a trimaran all the way across the Pacific. Marden was impressed. “I persuaded them to build a 16 metre Kelsall catamaran called Airmail for a friend in Manila,” he says. That boat is still afloat today and the same team also went on to build Marden’s 13.7 metre trimaran Mazinga , designed by Adastra visionary John Shuttleworth.

“ Mazinga still goes pretty well too. I was actually on board a couple of weeks ago in Manila Bay,” says Marden. Years later, having set up his own shipping company and become firmly established in Hong Kong, Marden decided to set the wheels in motion for a project that had been on his mind for a long time. “I’d always talked with John [Shuttleworth] about building a big power trimaran,” he says, “so we finally got it together and started planning it.”

Adastra , by all accounts, was a huge project and incredibly expensive – taking three years to build, although Shuttleworth’s vision was clear from the outset. “John is pretty handy with drawings. The first one he sketched looks remarkably like the final product,” says Marden. McConaghy Boats in Zhuhai was the obvious choice of shipyard, close enough for Marden to visit once a month and with a trusty reputation. “Old man McConaghy, who lived in Sydney, was the first person ever to build a composite boat using carbon fibre. They are the best for building big racing monohulls, so I was fairly certain that they could build a really strong composite boat,” Marden explains.

Marden took off on the yacht’s inaugural trip with wife Elaine. “We spent about six weeks sailing through Indonesia, Singapore and the Philippines. That sailing area is pretty much home territory,” says Marden, which is something of an understatement. In fact, he owns a cluster of private islands in the region, among them Pangkil and Pulau Joyo, both of which have proven enormously popular with Singaporean expats. “Both of the islands are located off Bintan,” says Marden, “and they are very successful. It’s all made out of driftwood. We rent them out, Pangkil in its entirety, Pulau Joyo more like a hotel.”

Adastra was built for crossing oceans so it was inevitable that adventures would open up far beyond Asia. Regattas, boat shows and sporting events like Formula One Grands Prix or the America’s Cup hold little appeal. “I have nothing against them but I wouldn’t want to make a destination out of something like that,” he says. Over in the Mediterranean , northern Mallorca gets his vote. “The top end of the island is pretty cool,” he says. “There are lovely cliffs up by Formentor and you can still get a pretty secluded anchorage.” Fiji is another favourite. “You don’t pay the harbour master there, you bring a bunch of kava and present it,” he says. “You sit down with the chief, have a little natter, hand over the kava, a rugby ball and a few sweets for the children, then you’ve checked in. You’re given the freedom of the village and the island, which is a nice way of doing it.”

Adastra is the perfect vessel for such far-flung travel, not least because she is so fuel efficient. “She just recently crossed the Atlantic from St Maarten to Vigo,” says Marden. “She was 12 days at sea averaging around 11 knots and we had enough fuel on board to turn around and go back again without refuelling, which is pretty cool. I think she did about 3.4 litres to the mile.”

Of course, with so many ocean hours under her belt, there have been hairy moments, although Marden wasn’t on board for one of the worst. “The boat was off Tahiti when all the portside portholes were smashed in by a wave and the boat started filling up with water. They managed to staunch it and she went back to Tahiti for repair. Other times we’ve had waves breaking over the hull, but ultimately she’s incredibly seaworthy.”

Seaworthy, but also extremely comfortable, largely thanks to Marden’s wife of 30 years, Elaine, who was heavily involved in the interior design. “Elaine is definitely integrated into the team!” says Marden. “We started out in a small sailing boat and now we’re in this nice, big, air-conditioned luxury yacht with five people looking after us, which is great.” Adastra has room for nine guests, although Marden warns other owners against carrying around too much accommodation. “Quite honestly it’s hard to get a whole bunch of people on board – people are busy, or it’s too far away, or they don’t have the time.” The couple have three grown-up daughters but they are scattered across the globe and aren’t able to join on board as often as their parents may wish. “They’re all working now, so it’s difficult. They have commitments,” explains Marden. “One of them is in LA in the movie business, another works for the Boiler Room as a camerawoman and the other is at the Royal College of Art in London.”

Together, they find they spend most of their time on the foredeck. “Out there we have an awning, loads of comfy cushions and beanbags, which are excellent on a boat – even though they are a little bit hard to get out of!” In Asia they find they spend a lot more time on board than off, which is just how Marden likes it. “If you’re in the Med, there are things to do; you can go and see lovely ruins, eat in fantastic restaurants, plus you can visit your mates who are living there. You get off the boat,” he explains. “In Indonesia and around that whole area, there’s basically nowhere to go. You have to be completely self-sufficient, you never see another yacht and that’s the way that I’ve grown to like it.”

The couple spend about eight weeks on board every year, but Marden reveals that they are thinking of selling Adastra in a couple of years. “I’m getting old and I can’t spread myself too thin,” says Marden, referring to the fact that he has a second boat, Hang Tuah , a 41 metre monohull designed by Nigel Irens , which he plans to keep. Before setting any selling plans in stone, though, there is more adventure in the diary this autumn with the pair heading off to the Greek Islands. “After that, she’ll go back across the Atlantic, through the canal and home,” says Marden. “The only reason we ever leave is to reaffirm our knowledge that Asia is the best.”

Pictures courtesy of Jochen Manz; Sam Tsang/South China Morning Post; Orion Shuttleworth; King Fung

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  2. Inside 'Adastra,' the Rule-Breaking Trimaran That's Traveled ...

    Despite its eco credentials, Adastra is still very much a luxury yacht. With the main hull flared over the water for additional space, the exterior layout allows guests to enjoy several...

  3. ADASTRA Yacht Charter Price - McConaghy Boats Luxury Yacht ...

    Adastra is a distinctly sophisticated superyacht promising unforgettable luxury yacht charters. The 42.5m/139'5" 'Adastra' motor yacht built by shipyard McConaghy Boats is available for charter for up to 6 guests in 3 cabins.

  4. Futuristic Trimaran, Adastra to Arrive in Maldives Next Week

    The futuristic trimaran was built for exploring the world and continues her round the world journey and arrives in Maldives next week. This 42.6 metre superyacht was designed by British Naval Architect John Shuttleworth and built by MaConaghy Boats.

  5. Adastra - McConaghy Boats

    Adastra’s 16 metre beam creates a spacious saloon area on the main deck which offers superb views through a panoramic window and accommodates a lounge area, dining table, and navigation station. A forward-facing door through the saloon window gives easy access to a large sunbed on the foredeck.

  6. On board with Anto Marden, owner of trimaran superyacht Adastra

    Hong Kong-based shipping magnate and superyacht owner Anto Marden on why, while far-flung adventures in his 42m trimaran Adastra are fun, Asia is where his heart lies.