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Heesen is delighted to announce that on November 19, 2021, YN 19480, Project Cosmos was launched at the shipyard in Oss.

At 80metres, with a gross tonnage of 1,700GTand a top speed of almost 30 knots, she is the biggest and fastest all-aluminium yacht ever built. The challenges involved in creating such a large and complex yacht are extreme, but made a perfect fit with Heesen’s history and expertise. Precision aluminium construction, high performance and the finest Dutch craftsmanship are steeped into the DNA of this shipyard. Cosmos is the ultimate expression of Heesen’s ability to build daring projects that stretch the imagination of its engineers and craftspeople. 

Thanks to the dedication of the Heesen teams and the shipyard’s loyal subcontractors, who all worked tirelesslythrough the pandemic, the yacht was launched on schedule in perfect Dutch style. 

What makes Project Cosmos so impressive is itsimmense sizecombined with aremarkable top speed of almost 30 knots. This is achieved thanks to the lightweight and low-drag hull design, honed to perfection by Heesen’s naval architectson an iteration of the Fast Displacement Hull Form devised by van Oossanen, and assembled, millimetre-perfect, by Heesen’s welders. Ensuring sufficient longitudinal strength was one of the biggest technological challenges facing Heesen’s engineering team, who designed and patented the Backbone – an intricate, full-length structural reinforcement system. Power comes from traditional,if highly refined, diesel propulsion -four engines, two gearboxes, variable-pitch propellers and ultra-innovative Promas rudders. 

“Today, we are celebrating the launch of a unique yacht,” said Heesen CEO Arthur Brouwer. “Unique not only for our shipyard, as she is the largest we have ever taken on and represents the pinnacle of our achievements to date. Cosmos is also unique in the industry – the largest and fastest aluminium yacht in her class ever built.” Cosmos’selegant exterior comes from the renowned British studio of Winch Design. Clean lines, a sporty silhouette and the extensive use of glass create a timeless, dynamic profile, which will look as good in twenty years as it does today at launch.  “The Winch vision for Cosmos was to retain Heesen’s sporty DNA but blend it with an innovative, futuristic spin. Curved glass forms smooth, sculpted shapes, creating a feeling of slick, contemporary charm,” said Jim Dixon, Director of Yachts and Aviation at the British design house. “The brief stressed that she had to have a strong and unique signature whilst retaining the Heesen DNA that we all know and love. The emphasis was on creating a fast looking yacht that sits elegantly on the water, a feat that has been cleverly achieved through the use of sculptural, curved forms and perfectly balanced proportions.” – James Russell, Associate, Yacht Exteriors

Sinot Yacht Design and Architecture was responsible for the light and soothing interior design that makes guests feel at home from the moment they step aboard. While the overall palette is neutral, splashes of a range of blue hues are infused into the design throughout. The piece de résistance is undoubtedly the beach club, with its side and stern platforms. The backlit onyx bar with centrally positioned seating is the focal point of this ample and airy space close to the water.With the size, weight and performance of Project Cosmos so intimately connected, Sinot collaborated closely with Heesen’s in-house engineers to ensure that their stringent weight calculations were always met.

Followingher launch, Project Cosmos will remain at Heesen for commissioning before undergoing intense sea trials in the North Sea commencing in February. She will be delivered to her owners in April 2022. 

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Luxurious Magazine’s Online Editor, Simon Wittenberg, travels to the Netherlands to the home of Heesen Yachts in Oss for a privileged view of the keel laying ceremony for Project Cosmos. It marked the official start of the construction of the shipyard’s largest superyacht to date at 80 metres.

The past couple of years have been good to Heesen Yachts. During this time, the shipyard, which employs 450 people and around 250 subcontractors, has sold nine yachts in the 47 to 80 metre range, and delivered seven in the 47 to 55-metre line-up. With another 12 on order, this means that the privately owned business is certainly flourishing in the face of political and economic uncertainty. Today, Heesen is no longer building any vessels below 50 metres in length, which is a far cry from 1978 when the largest yacht to emerge from Shed 1 was Amigo at just 20 metres. The US and Russia remain important markets for Heesen, but East Asia is still relatively insignificant in terms of customer demand, and its potential is yet to be truly realised.

Prominent boat shows, such as Monaco and Fort Lauderdale, are considered to be important for the business to attend as a shop window in order to display their latest designs and technology, but it’s not where the deals are ultimately signed. Putting pen to paper is primarily done through brokers around the world that have a strong network of contacts, and Heesen’s US operation has been responsible for the sale of six of the last ten yachts.

Heesen is pushing the boundaries once more with Project Cosmos. Back in 2016, I had the pleasure of sailing on the 70 metre Galactica Super Nova, which was, at that time, the largest yacht to have emerged from the Dutch shipyard. Three years later however, and the still-to-be-named “Project Cosmos”, which was first unveiled to the world in March 2018, will soon steal the former flagship’s limelight, as she will be the biggest ever yacht to have been built in Oss at a length of 80.07 metres. When the vessel hits the water in 2022, it will also be the world’s largest and fastest aluminium yacht with a conventional propulsion system, powered by four MTU 20 V 4000 diesel engines (producing the equivalent output of 19,000 hp), which will drive five-blade high skew propellers, each measuring 2.8 metres in diameter.

Heesen Yachts’ facility, which is made up of 14 individual sheds, spread across an area of 22,000 square metres, is capable of building vessels up to 83 metres in length. This is because the shipyard lies on the edge of a canal in Oss, which feeds into the River Meuse, a passage of water that provides the company with vital access to the North Sea. However, with this journey to the rest of the world comes constraints in the form of dykes and bridges. This, in turn, restricts the size of vessel that Heesen can build, whilst also introducing further design considerations. This is because, to keep the shape of the yacht proportional, the length ultimately determines the height, hence any vessels surpassing the 83 metre mark, that other shipyards have the capability of building, would not be able of reaching the coast.

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Boat of the Week: Inside ‘Galactica,’ the World’s Largest All-Aluminum Superyacht

Heesen's behemoth has a high-tech "backbone" running its length to provide enough rigidity for the boat to reach a blistering 30 knots., julia zaltzman, julia zaltzman's most recent stories.

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What has an aluminum-plate backbone, more than one head, and runs faster than Usain Bolt? Heesen ’s superyacht Galactica— or “Project Cosmos,” as it was formerly called by the yard. The largest boat built by the Dutch shipyard to date is getting ready for its spring debutante ball. Fast, sporty and 262 feet long, the owner refers to Galactica as his “ultimate superyacht.”

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Hundreds of yachts around the world are larger than Galactica . None of them are built entirely out of aluminum. For the owner who likes to make a statement with his custom new builds, Galactica had to be his largest and fastest one yet. The owner decided he wanted a 30-knot top speed—greased lightning for a yacht this size and a conundrum for the shipyard.

A 262-ft. steel-hulled boat with conventional propulsion wouldn’t be able to reach that 30-knot mark. But an all-aluminum boat might, though that metal doesn’t provide the type of structural support that heavier steel does. Such a yacht had never been built, even by an aluminum specialist like Heesen. It would take serious creative engineering.

Galactica on her maiden journey through small Dutch villages.  Courtesy Galactica

The owner has history when it comes to these types of requests. His previous two yachts, Galactica Star and Galactica Super Nova are both all-aluminum with top speeds nearing 30 knots. At 230 feet in length, the latter was Heesen’s largest-ever build when delivered in 2016. Galactica is 30 feet longer, and while that doesn’t sound like much in the scheme of things, the technical ingenuity required to make it work had Heesen’s top engineers scratching their heads. The answer lay outside the boating industry, in the construction industry’s I-beam.

“Everyone knows the I-beam where you have the material on the outer veins of your structure,” Peter van der Zanden, Heesen’s general manager of design, development and engineering, told Robb Report . “That’s where our inspiration for the backbone came from, where we have the majority of materials in the bottom of the boat and on the main deck—our ‘outer veins’.”

The name “backbone” suggests a spine or something with flex, but the patented box-shaped structure is anything but. Composed of 15-mm aluminum plate, it’s lightweight and strong, running almost the full length of the yacht.

Glass was a main priority for the owner’s third boat in the Galactica series.  Courtesy Heesen

“We knew the design would work, our only concern was if it would work well enough,” says Van der Zanden.

Heesen created a scale model of the boat in water, divided into four segments, and simulated the pressures and forces at sea. When the results exceeded the requirements set out by Lloyd’s, the yard patented the design.

Of course, there’s more to Galactica than its hidden backbone. Key defining features of the Winch Design exterior include large sweeping panes of glass that trace the arching line of the superstructure. A bow helipad doubles as a cinema with seating and a screen that folds away into the deck. The glass-bottomed pool on the main deck reflects sun rays on the beach club below. Increasing the amount of light—both natural and artificial—throughout the boat was a chief request in this latest version of Galactica.

On its journey from the Oss shipyard to North Sea sea trials, the clearance between the top deck and some bridges was less than six inches.  Courtesy Heesen

“The owner’s previous experience has certainly influenced the way Galactica looks,” James Russell, exterior designer at Winch, told Robb Report . “It takes time to learn what you love, and particular focus has been paid to areas where more time will be spent, such as the beach club.”

Inside, an interior by Sinot Yacht Design & Architecture includes a central glass elevator, brushed oak and marble finishes, and in the main deck lounge, hand-cut glass ceilings. Galactica ’s windows incline at 45 degrees, rather than the standard 90 degrees, to give the illusion that the panes of glass are larger than they are.

Glass is a recurring theme, from the glass detailing in the straw marquetry and stainless-steel wall located in the main deck lounge, to the drinks display cabinet on the bridge deck with bespoke-sized backlit glass cubes sized to fit individual bottles. But glass is heavy. For the yacht to be fast, it needs to be light.

The helipad converts into an open-air cinema, with a screen that rises from the deck.  Courtesy Heesen

On a yacht of Galactica ’s size, everything is large, from the four MTU V20 engines (12 tons each) and the two gearboxes (13 tons each), to the air-intakes and the fuel tanks. But everything was made as lightweight as possible. The boat totals only 1,700 gross tons. The owner’s 30 knots will come from the MTUs’ 19,320 horsepower as well as the variable-pitch propellers.

Nothing has come easy with this yacht build. Its January journey from Heesen’s shipyard in Oss to the port of Harlingen where the boat is undergoing final testing in the North Sea was a game of inches. It passed through villages and squeezed beneath canal bridges with less than half a foot to spare, a hair-raising exercise for an undelivered superyacht. It will be turned over to its owner in April.

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Heesen Yachts

Located in Oss, The Netherlands, Heesen Yachts builds custom superyachts in aluminium and steel from 30 to 70 metres in size.

History of Heesen Yachts

Heesen Yachts was founded by Frans Heesen in 1978, drawing on the rich talent pool of maritime craftsmen and artisans in The Netherlands. The shipyard claims to be the first in Holland to utilize aluminium alloy in constructing yacht hulls. Heesen Yachts has continued to pioneer the use of aluminium to produce seaworthy yet swift performance superyachts.

In 1992, the shipyard added full displacement, steel-hulled motor yachts to its portfolio. In recent years, Heesen Yachts also has developed a series of “Fast Displacement” superyachts, designed to provide higher speeds and greater fuel efficiency than a traditional luxury yacht.

Notable Heesen Yachts

In 2011, Heesen Yachts delivered the 50-metre superyacht Satori , featuring breathtaking contemporary exterior styling by Omega Architects. Constructed entirely in aluminium, and powered by twin MTU 16V 4000 M90 diesel engines, she has a cruising speed of 24 knots. Satori’s interior design is by Remi Tessier.

The 65-metre superyacht Galactica Star was launched by Heesen in 2013. She features an innovative Fast Displacement hull designed by van Oossanen Naval Architects that the shipyard reports is 30 percent more efficient than a traditional superyacht hull of the same size. She combines a 28-knot top speed with a range of 4,200 nautical miles.

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