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Solar electric motor yachts

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Embark on a slow cruising

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Reconnect yourself with the sea

  • Full autonomy
  • Solar electric energy
  • Luxury design

Whisper Yachts embarks the best of technology aboard solar-powered yachts designed to be both in harmony and respect with the sea.

Whisper Yachts offers an exclusive 50 ft luxury yacht powered by green energy that provides a way of sailing more handy, comfy and eco-friendly.

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The perfect balance between luxury and sustainability

A new way of exploration, bring innovative and environmental solutions to sea navigation.

A new way of exploration

Green technology

Whisper Yachts is constantly innovating and adapting its products to push back the limits of responsible navigation, placing respect for seas and oceans at the heart of their concerns.

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Slow cruising

With Whisper Yachts, reveal your pioneering spirit. Enjoy a sense of belonging in the middle of the immensity, delight the beauty of the oceans without damaging them.

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Respect of the seas

Whisper Yachts reduces the carbon impact on the environment by 90% and is working to reduce to 100%. 

Sustainable by nature, the design team is committed to always selecting sustainable materials without compromising quality. 

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Whisper Yachts offers a range of green energy luxury yachts with 100% solar electric motor yachts that provide a way of sailing more handy, comfy and eco-friendly. 

Whisper Yachts exists to bring sustainable and environmental solutions to sea navigation.

Whisper Magazine

The latest from whisper yachts' world.

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  • Environment
  • Green energy

A new beginning: the inspiration of Whisper Yachts

After spending an entire year cruising around the world aboard their solar electric motor yacht by Whisper Yachts, Sarah, Thomas, and their son Lucas returned to France, transformed by this unique experience. Their journey, powered by the solar engines of their yacht, exceeded all their expectations, and they came back with new ideas and renewed energy for their future.

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The evolution of yachts: from sail to motorization

The evolution of yachts is a fascinating journey through history, marking humanity’s progress in navigation, engineering, and luxury. This evolution mirrors not just technological advancements but also a shift in our relationship with the seas.

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  • Exploration

A family's quest for sustainable travel

In the pulsating heart of a bustling metropolis, an art gallery transforms into a stage, unveiling the intimate theater of a family. Sarah and Thomas, embodiments of complicity, wander among the artworks, their young son, Lucas, a silent witness to their harmony. Each painting, each sculpture, becomes a chapter in their story, woven with vibrant colors, mesmerizing shapes, and tales whispered to the soul.

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Sailing with Whisper Yachts in 2024

In this time of reflection and renewal, Whisper Yachts invites us to welcome 2024 with a resolution that transcends the traditional, by personally committing to the preservation of our planet. This commitment takes the form of an unparalleled sailing experience aboard their solar electric yachts, a perfect fusion of luxury, technology, and ecological awareness.

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Returning to nature, an escape from contemporary chaos

In a world where every second counts, where the incessant notifications from our devices constantly remind us of our duties and responsibilities, the anxiety of immediacy has become a tangible reality. Crowded streets, ever-present screens, and the breakneck pace of modern life have created a stifling atmosphere, leaving little room for serenity and contemplation. The relentless waves of often alarming information overwhelm us, leaving us in search of a sanctuary, an escape.

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A unique adventure across Mediterranean and Atlantic coasts

As the days turned into weeks and the familiar coasts of the Mediterranean faded into the distance, the family aboard their Whisper Yachts discovered a new dimension of sailing, where sustainability and luxury became one.

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Merging luxury with ocean conservation

Since the earliest days of terrestrial existence, the oceans have been the stage for an eternal dance of life. These vast expanses of saltwater, stretching as far as the eye can see, witnessed the birth of the first life forms and have been the silent observers of the evolution of millions of species. These deep and mysterious seas have inspired countless legends, myths, and tales of adventure, reflecting the fascination and reverence they educated  humanity.

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How Zero-Emission, Solar-Powered Yachts Entered Boating’s Mainstream

Yacht builders are designing zero-emissions yachts to compete with diesel-chugging rivals. they're so quiet you can hear dolphins swim by., shaun tolson, shaun tolson's most recent stories.

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Solar-powered motoryachts are taking over the water with eco-conscious results.

For many years, yacht builders adding solar panels to their boats discovered those panels would typically power a few things like the electricity and galley, and if they helped with propulsion, it would only carry a boat so far. In the last few years, new companies and boat-builders have emerged that are proving solar can be the main source of power—a big deal considering that most yachts are solitary creatures that are entirely reliant on a specific form of propulsion. No boaters wants to be 50 miles away from civilization in a turbulent ocean and suddenly see their engines go out. It’s not like they can call AAA.

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The problem was that most yacht builders were sticking panels into yachts that were never designed to be self-sustaining. Boyd Taylor realized that several years ago as he was conceptualizing solar-powered catamarans for his company Serenity Yachts . Near the end of 2019, Taylor oversaw the launch of the Serenity 74, with almost 1,200-square-feet of solar panels. Those panels support all of the yacht’s onboard functions, while it cruises at 9 to 11 mph indefinitely.

The yacht functions so capably—using only solar power—because Boyd and his team of engineers started from the water up. They created an electrical system designed to only use solar energy. “We started with the solar system and built the rest of the boat around it,” Boyd told Robb Report. 

Solar-powered motoryachts are taking over the water with eco-conscious results.

Soel Yachts is one of the latest builders to introduce a solar-powered catamaran for emissions-free cruising.  Courtesy Soel Yachts

Once the electrical system was in place, Serenity Yachts ’ team of naval architects and engineers designed a lightweight boat made of carbon-fiber weave, not pure fiberglass. Taylor says a fiberglass boat that size would weigh 8 tons more. Despite that emphasis on lightweight design, a Serenity Yacht still features interior accents and design materials that mean luxury. Granite countertops, for example, are built around a honeycomb structure, so only a thin layer of granite is needed.

Other boatbuilders have gained traction in the marketplace, as well. Soel Yachts , a Dutch company founded in 2011, recently launched its Soel Senses 48, a 48-foot pleasure craft that can sail at a top speed of 21 mph and cruise up to 56 nautical miles at 14 mph. Like Serenity, the Soel Senses 48 was designed for “high-efficiency electric propulsion,” as the company states—in other words, it was designed from the very beginning with solar power in mind.

Silent Yachts is one of the leaders in the solar-powered yachts industry, having just launched an 80-foot tri-deck catamaran that is powered by more than 1,200 square feet of solar panels.

Solar-powered motoryachts are taking over the water with eco-conscious results.

Serenity’s 74-footer makes use of the catamaran’s wide beam, while adding windows across the entire upper salon.  Courtesy Serenity Yachts

In September, BYD Group , a full-service naval architecture and engineering firm in Spain, unveiled a new all-electric, self-sufficient 65-foot coastal cruiser dubbed Eegle. Positioned as a “game changer in the world of eco-friendly motoryachts,” the Eegle is equipped with 323-square feet of solar panels on its hardtop. Those panels, combined with four, 150-kilowatt electric engines, allows the yacht to cruise 1,080 nautical miles at 8 mph.

“Today, solar panels are much more advanced and can be adapted to more surface shapes than in the past, giving us more freedom to install solar panels in more areas,” says Tià Simó, a co-founder of BYD Group.

Beyond offering clean, eco-friendly sustainability, the benefits that an exclusively solar-powered yacht can offer, according to Taylor, are what your senses don’t pick up while on board.

Solar-powered motoryachts are taking over the water with eco-conscious results.

BYD’s master suite shows the design advances that have been made in the last year in solar yachting.  Courtesy BYD Yachts

“You’re running a silent boat,” he says. “You don’t have the smell of diesel fumes or the vibrations and rumblings of a diesel engine. You get to smell the salty air and hear the waves slap against the hull of the boat. You can actually hear dolphins splashing in the water. You not only get to enjoy this incredible scenery and enjoy nature in all of its majesty, you get to know that you’re leaving it the way it was when you came.”

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Review: Silent 55, the extraordinary solar powered yacht

Yachting World

  • January 18, 2019

Silent Yachts is tapping into the solar zeitgeist and creating a new meaning for the term ‘powercat’.  Sam Fortescue reports

Silent Yachts Silent 55

There is a slow, silent revolution under way in the yachting world. It is a revolution that is introducing tonnes of lithium and a sprinkling of silicon to the spec list of new boats. Holding out the promise of silent mobility, plus limitless domestic power on board, it made a big splash at the last Cannes Festival of Yachting – not least thanks to the new Silent 55 catamaran which debuted there.

From the pontoon side, the Silent 55 looks like a typical modern catamaran, with a big coachroof studded with windows and a flybridge helm. Except there’s no mast. Now, bear with me here. I realise that this is a sailing magazine, but we will shortly get back to more familiar territory. The unique qualities of this catamaran only become apparent from up top, where an expanse of solar panels stretches away fore and aft, embedded into the coachroof. The hard top itself carries yet more panels, and can be folded down flush to give an unshaded solar array of 49m2. During the heat of a summer day in the Med, this is capable of generating 10kW of power and up to around 60kWh in the course of the day.

Silent Yachts Silent 55 exterior

But to make a solar system work in reality, Köhler had to go back to the drawing board on yacht design. The saloon and hulls have extra thermal insulation to keep air-con losses down, and the use of carbon and aramid in key areas helps reduce the overall weight to a decent 17 tonnes (a Lagoon 52 weighs 22.5 tonnes). He has tried to keep windows out of the direct sun with long overhangs and in contrast to the Lagoon’s 12 deck hatches, the Silent 55 has just two.

Holistic design

On the other hand, it has lots of opening windows, to allow a natural draught to do its job. “It’s a holistic approach – you can’t take the batteries and the drivetrain and drop it into another boat.”

Of course, using the propulsion system quickly takes its toll of the boat’s 140kW battery bank. The model on display at Cannes had two 135kW motors, giving you just half an hour of silent motoring flat-out, albeit at a top speed of over 20 knots. More reasonable 30kW engines and a single-digit speed give you greater range. Nonetheless, the electric drive alone isn’t going to allow you to outrun a storm, or race home after a day at anchor, so the boat is designed to work with a generator hidden in the heavily insulated transom of its starboard hull. At cruising speed of around 5-6 knots, Köhler says there is rarely any need to use the generator, citing an owner who has just emailed him triumphantly about a second year totally generator-free. “In the end, you have to compare it to the performance of a sailing boat,” Köhler says. “It is as fast as a sailing boat in similar conditions – after all, there is no wind without sun.” He went so far as to tell me during the sea trial in Palma, Mallorca, that he believed the majority of sailors would happily dispense with the hassle of sails and a rig if only they could enjoy silent motoring and anchoring. “As soon as people realise the incredible concept of this boat, they won’t understand why they ever did anything else.”

The market does not seem to agree with him – yet. Sales of the boat have been good – they have already sold six, five of which are already in the water. But of those, four customers have taken the sail option, which means planting a 19.7m tall mast complete with boom and rigging slap bang in the middle of the coachroof solar array. “I was a bit amazed,” Köhler admits. “The shade from the rig reduces the energy generated by the solar area, while it costs more and is heavier, so consumes more fuel. Maybe it is for optical reasons.” In fact, the shade of the rig slashes the average yield of the solar panels in half. In the Med, that means around 30kWh per day. But perhaps it figures. The typical profile of buyers is an environmentalist who has a Tesla electric car and is “an early adopter who likes to have things before others”. And at low speeds, with modest use of the air-con, the reduced energy generation should still cover daily consumption.

Silent Yachts Silent 55 Sail Version exterior

The performance under sail should be reasonable because of the lightweight build of the boat, its broad 8.47m beam and stub keels added to each hull. Control lines are led back via conduits in the coachroof to the flybridge helm station, to make single-handing under sail a possibility.

More interesting, I think, is a sort of halfway-house option using a kite rig. This optimises the performance of the solar panels and gives plenty of propulsion. On the smaller 55 and the 64, Silent Yachts currently recommends a 19m2 kite that costs around €25,000 – a fraction of the cost of a new mast, boom, shrouds and sails. “The sail automatically makes a figure of eight above the boat, and you can steer it with a joystick or an app on an android phone,” Köhler explains. “It can propel the 55 at up to 6 knots, even in light winds.” Perfect for an Atlantic crossing, then.

For the bigger Silent 79, which will hit the water in the summer, a commercial grade Sky Sail system needs to be used – a smaller version of the ones used on cargo ships. This kite can propel the boat at ten knots, but it costs more than ten times as much as its smaller cousin. Both are capable of pulling the boat upwind. So far, so new. But outside the novel energy and propulsion system, the Silent 55 aims to do what many other cruising catamarans are trying to achieve. “Most of our clients order for circumnavigation and long-term cruising,” Köhler says. So the boat is aimed to be as comfortable and capable as possible with watermakers, TVs and an induction hob that all capitalise on the boat’s abundant energy. A flexible configuration allows owners the choice 
of between three and six cabins – the latter designed for charter. The owner’s cabin lies forward of the saloon, under the windows of the coachroof, which provide magnificent views and abundant natural light. There’s a walk-around bed and steps down into the starboard hull give access to an en-suite shower room and heads.

Silent Yachts Silent 55 master cabin

In my view, the best cabin lies aft of this, accessed in the traditional manner down steps out of the saloon. The king-sized bed lies athwartships and the shower is larger than that of the master cabin. There’s more space down here, better headroom and still plenty of light courtesy of the many hull lights.

Silent Yachts Silent 55 guest cabin

When I had the chance to sea trial the Silent 55, albeit in motorboat format, I jumped at it. It was a contrary autumn day on Mallorca with 15 knots breeze – just a shame, then, that this wasn’t one of the sailing configured versions.

To start with, getting on board is made really easy courtesy of deep boarding platforms on the skirts. She feels rather square because of that vast, glazed saloon with its deep overhang, and perhaps because of the utilitarian nature of the hard top, which is really about supporting more solar panels. Nevertheless, the side decks are broad and uncluttered. The space up top is designed to concertina down flat, hence the hydraulic rams, fold-down seat back and lowering console. It makes a great sailing position, though, with all round visibility, and is also perfect for sundowners at anchor. When the rain comes down, this feels quite exposed, but there is a fully sheltered helm at the front of the saloon, and it is also possible to drive the boat from anywhere using a tablet thanks to smart electronics. Under power, the handling is superb. The quietness of the motors is astonishing, and I gather they’ll be inaudible on the next boat, which will do away with the gearbox. Even in the aft cabins, directly above the motors, there is no more than a distant hum. The boat responds instantly to the power and the wind seemed to have no impact at all. As with any propulsion system, the power consumption jumps as you pile on the speed – it was sobering to see. At 6 knots, both motors drew 10kW but at 8 knots it was closer to 30kW. I liked the huge saloon with its raised table for 360º views. And the sliding door and window gives great access aft, connecting the saloon and cockpit in fine conditions. The finish was smart and in muted tones, feeling more Scandinavian than German.

Intriguingly, at least it seems to me, Köhler has tapped into something with the concept behind Silent Yachts – but not entirely for the reasons that he expected. Buyers are opting for the sail or kite versions of the boat because they want a comfortable wind-powered craft with abundant, quiet energy on tap. It brings a whole new meaning to the 
term ‘powercat’

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Soel Yachts

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True ecotourism

no more fuel

The SoelCat 12 is an energy autonomous solar electric boat, designed from the ground up as a fully sustainable excursion vessel to enjoy the sea. The solar catamaran brings  true eco-tourism  to water-bound operators, communities, resorts, lagoons and nature reserves. With no CO2 or noise emissions involved, we can save the ocean and offer a better experience to our guests! The heart of the concept is  silence : being on board without any distractions lets the journey become the destination!

Solar electric yacht désigner Soel Yachts

“Being on the solar catamaran gives you a feeling of total relaxation and freedom. The energy autonomous boat is powered by clean energies and we don’t have to worry about harming the environment with dirty exhaust fumes, fossil fuels or complicated maintenance! Our guests love the quietness and the openness of the vessel, which make every sunset cruise a very special moment!”

S. Dekeunynck, French Polynesia

electric from the start

The SoelCat 12 solar electric catamaran is integrally designed for electric propulsion right from the first line drawing to the matched propeller. Every aspect of this vessel contributes towards its highly efficiency for solar electric sailing. The lightweight yet durable fibreglass construction, the large solar roof and the super slender hulls are the major key factors for the solar vessel’s high performance when it comes to speed and range. The electric propulsion system for the SoelCat 12 is superior when it comest to volume and weight.

MOBILE POWER STATION

During downtime, the SoelCat 12 can utilise its large solar array to provide energy for your land based electricity grid. The solar electric catamaran then turns into a mobile power station and is able to feed 8.6kWp into the AC grid or provide power at remote places where no grid is available. The 120kWh  lithium battery  system supplies all the energy required for save operations during day and night.

Tesla on the water, SoelCat 12, SOEL YACHTS, mobile power station on the ocean, electric catamaran, electric boat company, solar electric naval architecture

SPECIFICATIONS

Length 11.80 m 39 ft
Beam 5.80 m 19 ft
Draught 0.70 m 2.3 ft
Displacement 6 ton 13.200 lb
Solar Power 8.6 kWp
Battery Capacity 2x 60 kWh
Electric Motor 2x 30 kW
V 13 kn
V 8 kn
V 6 kn
Passengers 12 – 20
Crew 4
CE Design Category C
  • Running Time (battery only)
  • Running Time (with solar)

Solar yacht design by Soel Yachts

“Every detail on the boat is perfect – gorgeous spaces to relax, great spots to view the sunset or the marine life, and even a bar! My favorite moment of all was after sunset, when an incredible manta ray came to say hello, drawn by the underwater lights of the solar catamaran.”

S. Lee, New Zealand

fully customizable

The deck space of the solar electric boat can be customised to your wishes and host a variety of seating arrangements and layouts. Choose classic yacht fittings, luxurious and comfortable. Or practical and economical deck wear and simple bench setup for water taxi services. Furthermore, the electric catamaran can be equipped with a day head in the port side hull.  Get in contact with us now  to learn more about the different options and to discuss your personal requirements with your Soel Yachts contact partner.

Boat interior solar electric catamaran

The solar electric catamaran can be equipped with removable roll down screens on every side for flexibility in every situation. Screens for sun shading can be applied on good days, while transparent rain screens protect your guests in bad weather conditions. When the screens are not in use, the comfortable SoelCat 12 lounge layout offers spacious space options in the hulls and underneath the furniture.

Protection screens from the SoelCat 12 solar electric catamaran

SUSTAINABLE SEA TRANSPORT

With both the Okeanos Foundation and Soel Yachts sharing a vision of sustainable sea transport and striving for a healthier planet, we are honoured that our partner, the Okeanos Foundation has funded and supported the development of the SoelCat 12. The first SoelCat 12, named the ‘Okeanos Pearl’ is the first energy autonomous vessel for the ecotourism industry and will pave the way for more sustainable coastal water vessels in many different sectors. The Bora Bora Pearl Beach Resort is proving a pioneering spirit by operating the solar electric Okeanos Pearl. As the first resort, they are offering truly sustainable, noise and emission-free excursions in the pristine lagoon of Bora Bora to their guests.

Demountable

The SoelCat 12 can be delivered as a demountable solar electric boat, which fits into two 40ft high cube containers. Such compact dimensions enable ease transport of the catamaran at affordable rates to destinations all over the world. Neither lamination processes or specialized tools are required for the SoelCat 12’s quick assembly on location. For more details, please feel free to follow the link below and discuss your project requirements with your Soel Yachts partner!

Your project enquiry

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Silent Yachts

120 Explorer

The boldest expression of solar powered yachting yet.

Our 120 Explorer brings Silent technology to the superyacht level. Capable to taking you almost anywhere on the water, she pushes our dedication to engineering and innovation further than any other electric yacht before. Just as with our 80 Series, Marco Casali was responsible for the futuristic exterior and opulent interior design of this supercatamaran. Bespoke customization across all four decks ensures the owner´s vision will be transformed into reality effortlessly.

Specifications

Silent 120 Solar yacht

Exterior deck

Exterior terrace on the second deck of a yacht

Flybridge & Helipad

flybrifge helipad plan of a Silent 120 yacht with measures

Solar-electric yachting advantages

Unlimited range, noiseless cruising, zero emission, minimal maintenance, 12o series highlights.

Helipad of a catamaran with solar panels in the roof

Touch & go helipad

With the help of a sliding mechanism, the solar panels are capable of moving apart – revealing a sun deck which can also be used as a touch and go helipad. It was specially designed for eVTOLs (electric Vertical Take-Off and Landing aircrafts). This makes her the first Silent offering 4 complete decks.

Nemo electric submarine under the water

Electric submarine

In combination with the NEMO, a series produced electric submarine, you can explore depths of up to 100 m. Designed by U-Boat Worx, the batteries of the optional submarine can be recharged by connecting it directly to the yacht.

lateral tender garage in a solar powered catamaran

2 Tender garages

The 120 Explorer is equipped with two tender garages. The first one is located between the hulls and accommodates limo tenders of up to 7.5 m. In addition, a smaller crew tender and toys can be stored in the side-loading garage in the port hull.

Exterior terrace on the stern of a luxury catamaran

Incredible space

900 m² of combined exterior and interior space means this super catamaran offers similar amounts of space as monohulls measuring up to 50 m in length, giving you plenty of opportunity to play with.

If you would like to enquire about this electric yacht and get in touch with a member of our team, please click on the button below.

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Solar Powered Yachts

Solar panels are a fundamental element of today’s quest for responsible energy generation. Used in households, commercial facilities, and power stations across the globe, they are also a vital source of energy for solar powered yachts. With significant progress made over the last years, photovoltaic technology has emerged as the natural energy source with the most exciting growth potential.

Thanks to photovoltaic cells, solar panels absorb sun radiation to generate direct current (DC). When sunlight reaches a solar cell, it causes silicon electrons to move. This motion will start the flow of electricity that is captured by wires and directed to an inverter. Inverter technology is then used to convert it to alternating current (AC) ready to power household appliances.

The solar power systems on solar powered yachts usually consist of solar panels, batteries, charge controllers and inverters. While batteries store the energy obtained from the solar panels, charge controllers prevent batteries from overcharging. Solar catamarans with house appliances on board will usually need to convert the DC energy into AC with the help of an inverter.

Sunreef Yachts produces solar panels in-house and uses a new (patent-pending) technology to integrate them within structural components. The panels are made of the industry’s most efficient cells with a peak performance of 24%.

Thanks to the solar cells’ outstanding flexibility, Sunreef Yachts’ solar panels can be mounted on any surface of the solar powered yacht. As a result, they are integrated with various areas on board, such as hull sides, mast, superstructure, bimini roof or bow terrace to maximize energy generation.

With a thickness below 1mm and weighing around 1,8 kg per square meter (average solar panels will weigh between 8 and 15 kg per square meter), they are one of the lightest solar power systems in the world. In addition, tests have proven that thanks to their advanced integration technique, Sunreef Yachts solar panels have a very high resistance to shock and abrasion. This allows them to be used on any surface, including hull sides.

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New Silent Yachts For Sale

Silent yachts are the industry leader in ocean-going production yachts that are completely solar sustainable and powered by solar energy. seaworthy, luxurious, and built to impeccable standards, silent yachts are already desirable without its solar capabilities. with the abundance of solar panels on board each boat, every silent yachts model is able to cruise for 100 nautical miles in complete silence. even while at anchor, the solar-powered generators keep the yacht powered quietly for an unprecedented boating experience. enjoy all the benefits of a power catamaran with the addition of solar energy..

photo of Silent Yachts 80

Silent Yachts

photo of Silent Yachts 80

Silent Yachts 80

photo of Silent Yachts 55

Silent Yachts 55

Speak To A Silent Yachts Sales Professional

Silent Yachts offer an environmentally conscious choice when it comes to owning a yacht. Silent Yachts currently offers three solar-powered power catamaran models including the Silent 55, Silent 64, and Silent 80. United Yacht Sales is proud to be the U.S. distributor for Silent Yachts and can assist you in your search for the world's first solar-powered yacht. For more information, please contact United Yacht broker Darren Sell at (561) 351-7333 or by email at [email protected]

Where are Silent Yachts built?

Silent Yachts are built through two different shipyards depending on the model. The Silent 55 is built at the world-class shipyard of Mazarin German Yachts which also has a production site located in China. For over 70 years, Mazarin has been a leader in quality yacht construction with over 400 yachts delivered. Mazarin are experts in innovative construction processes that are able to produce light weight yachts.

The Silent 64 and Silent 80 are produced at the Italian-based shipyard Consorzio Navale which is a prestigous consoritum of builders and sub-contractors in the industry. The group has serviced many of the major Italian yacht brands such as Ferretti Yachts and Riva Yachts . Additionally, the Silent Yachts 80 features styling and design by Marco Casali and naval architecture by Insenaval.

Are Silent Yachts really completely solar-powered?

The short answer is yes. Owners can choose to go 100% solar-powered or install diesel engines should higher speeds want to be achieved over longer distances. Silent Yachts can cruise up to 100 miles per day by power acquired through its solar panels. Every day the solar panels are able to generate more power than the total consumption needed for propulsion at cruising speeds plus powering all of the appliances on board. 

How does the solar power work? 

The Silent Yachts power system feeds the electric propulsion of the power cat and all of the energy it needs to run the A/C, refrigerators, and other household appliances. Light-weight lithium batteries provide an ample amount of energy for everything on board. The lithium batteries used in Silent Yachts are the most expensive ones on the market, but also the most reliable, safe, and have the longest life span.

Solar panels are integrated to the roof of the flybridge hardtop sections instead of just being bolted on top, resulting in no wind load or resistance againest them. Below is a video explaining how the system functions and operates back when Silent Yachts were originally called "Solar Wave":

Who is the team behind Silent Yachts?

Heike and Michael Kohler have sent almost their entire lives on a boat. After more than two decades of using various boats, cruisers, and sailboats on multiple oceans, they became dedicated to finding a better energy source for the propulsion of yachts. Between the years of 2005 and 2009, Heike and Michael tested a number of a multitude of various alternative energy sources. In 2009, SolarWave 46 was launched as a proof of concept for their design. While there are many boats and yachts built that use solar power in some fashion, the Solarwave 46 was the first ocean-going yacht to use solar energy to power everything on board from engines to appliances.

What else is different about how Silent Yachts are built?

Certainly the solar-powered engines and generators are the distinguishing characteristic, but there are a lot of other features that make each Silent Yacht unique. For example, the molds were created using a CNC-milling machine that is able to contruct particular shapes for an optimized design. The materials used in the hull include a carbon compositie that is then resin-infused for a light-weight, but very strong platform. Every hull is fully insulated and the long-term durability is exceptional thanks to the high-quality resin used in the infusion process.

What propulsion systems are recommended by Silent Yachts?

Silent Yachts recommends the 2 x 135 engines as the best solution. If the owner is making frequest trips from Point A to B (Say Miami to the Bahamas for example) the faster hybrid is recommended. The main differentiator here is cruising speed. If the owner is living on the yacht for an extended period of time, rarely pushes the engines to top speeds, and stays below 12 knots, then the E-Power is recommended.

When the generator is running, does the 100Kw go to charging the batteries (which run the 250 Kw e-Motors) or directly to the e-Motors?

All of the enery consumers and producers are connected to the bus bar. If there happens to be more power produced than consumed, the excess power goes to re-charge the batteries. If for some reason more power is required than what is produced, the needed power comes from the lithium batteries.

What is the sustained speed if both 100 Kw generators are running?

This answer really depends upon sea condition and the weight of the boat (for example components, additional equipment, water toys, etc.). The sustained speed on average though is between 12 and 14 knots, 10 knots with one generator running. It is possible to cruise at 10 knots without a generator running when using the Solar E-Power.

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Aquanima 40 series

Azura marine, this $500,000 electric yacht can cross oceans on just battery and solar power.

Avatar for Fred Lambert

Singapore-based Azura Marine unveiled a new $500,000 electric yacht that they claim can complete “non-stop ocean voyages powered only by sunlight.”

The electrification of transport is slowly spreading into maritime transport.

While the focus has been commercial vehicles like ferries, it is also reaching leisure and personal vessels.

Azura Marine is the latest to enter the space with its first solar-powered catamaran yacht, the Aquanima 40 series, unveiled earlier this month in Bali, Indonesia.

The company describes the electric vessel:

“She is a unique 4 cabin, 8 guest yacht designed for extended cruising without any need for fossil fuels or refuelling stops of any nature. The Aquanima 40 solar-powered catamarans are also equipped with a 56 m2 rain catchment system, water maker and air conditioning water recovery – rendering water supply stops unnecessary too.”

Here are a few pictures of the Aquanima 40 series solar yacht:

solar motor yacht

Azura Marine claims that the vessel can continuously cruise thanks to its large 10 kW solar power system and 60 kWh battery pack.

Here are some of the specs of the Aquanima 40 series:

  • LOA 13,25 m
  • Draft 65 cm
  • Propulsion Power: 2 x 10 kW
  • Solar Power: 10 kW
  • Main Battery Bank Capacity: 60 kWh

The company writes about the capacity of the electric vessel:

“For the owner, this means limitless cruising with no fuel costs, no noise or vibration, no smells, no polluting emissions and no disturbance of marine life.  The electric motors are virtually maintenance-free with only a couple of low-cost bearings to be replaced at 20,000 hours (more than a typical lifetime usage of a yacht).”

Here are some pictures from inside the electric yacht:

The company lists several amenities available onboard its new electric vessel:

“The yacht offers all the comfort to be expected of a modern cruiser with air conditioning, fully equipped galley including ice maker, hob and sink.  On this version, the bathroom and toilet is on main deck for greater ease of access as this vessel is strongly oriented towards enjoying the outdoors, exploring hidden bays with the electric dinghy or diving on pristine reefs. Onboard Solar Eclipse, all water is self-produced, including fresh and drinking water, thanks to the yacht’s water-maker, air conditioning water recovery system and gigantic rain water collecting solar roof.  She features a high quality marine sound system and all round WIFI connectivity.”

Azura Marine Co-Founder and CEO Julien Mélot commented on the launch of the new electric vessel:

“it was an enormous thrill to launch the yacht last week and undertake her first few miles at sea.  The yacht met all our expectations and while the design makes for near silent operation with exceptional responsiveness, it was incredible to actually experience it  – and all in the knowledge that we were not producing any harmful pollution or emissions.  With some strong winds and a very tight to enter marina berth, we were delighted by how easy the yacht was to manoeuvre.  We simply cannot wait to take her out on her maiden voyage.”

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Aquanima 40 series

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Sustainability Success

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Solar Boats - Electric Yachts Catamarans

10 SOLAR Boats 2023 & 2024 | Electric Yachts & Catamarans

With more steps being taken towards sustainable development, new, eco-friendly solar boats have been introduced in the world of green travel: solar electric catamarans. 

Solar boats are electric yachts that can go for long distances without needing to stop for fuel and without emissions. Those solar catamarans are interesting eco-friendly alternatives to the classic power boat or sailing yacht for cruising. However, there are also a few disadvantages that you should know about before purchasing one!

10 Solar boats, electric yachts & catamarans

Here are the best solar boats that will delight you with a top-notch sustainable yachting experience based on your requirements:

Sunreef Yachts – Eco 80 Sail Catamaran

  • Silent Yachts – Silent 80 3-Deck

HH Catamarans – HH44

Silent yachts – silent 60, sunreef 43m eco (140 ft).

  • Silent 120 Explorer
  • 100 Sunreef Power Eco

Azura Marine – Aquanima 40

Soel yachts – soel senses 48, serenity yachts – serenity 64 (hybrid).

Here’s a quick summary of the features of the best solar catamarans for green yachting in 2023-2024:

Solar BoatsSolar Powered
Electric Propulsion
SailsDiesel
Engine
SizePrice
from
Sunreef
Eco 80 Sail
L$8 mm
Silent Yachts
Silent 80
Kite
Sail
L$6 mm
HH Catamarans
HH44
S$1 mm
Silent Yachts
Silent 60
Kite
Sail
M$2.7 mm
Sunreef 43M Eco
(140 ft)
XLOn request.
Expected
$23 mm
Silent Yachts
Silent 120 Explorer
Kite
Sail
XLOn request.
Expected
$19 mm
100 Sunreef Power EcoOptional
Hybrid
XLOn request.
Expected
$15 mm
Azura M.
Aquanima 40
XS$0.6 mm
Soel
Senses 48
SOn request.
Expected
$1 mm
Serenity Yachts
Serenity 60
M$2.7 mm

If you are an advocate of sustainable yachting or sustainable tourism and are looking to buy an eco-friendly boat that doesn’t rely on fossil fuels , then you would do well to consider getting a solar catamaran. In this article, I will go through the pros and cons of 10 of the best solar yachts and superyachts that you can buy in 2023 and 2024!

It is also important to note that while there are solar panels for sailboats that you can fit on older models, those new boats have been specifically designed to maximize the use of renewable energy.

Most Luxurious + Most innovative solar system

The Eco 80 Sail Catamaran is one of the electric solar boats provided by Sunreef Yachts.

It features a unique “solar skin” that covers all composite structures on the boat, including hull sides, boom, mast, bimini, and superstructure. This green tech makes it possible to place solar panels where it wouldn’t normally be possible (like the hull and any other smaller but useful surface) and provide enough solar energy from every angle.

The boat is 80-feet long (24.38 meters) and includes electric motors that push it smoothly over the water without causing any vibrations or noise.

Besides being solar powered boat, the Eco 80 Sail Catamaran can also be powered by wind and hydropower. It is designed with a sail on its structure, allowing it to tap into wind power and supplement the solar.

The solar powered sailboat generates enough green power not only to propel the boat and keep it moving but also to charge the essential electric water appliances and other water-sport toys.

So far, the Sunreef Yachts Eco solar sailboats have earned a good reputation for being eco-friendly and sustainable. Besides, this solar powered catamaran takes its commitment to the environment a notch higher by using recycled materials , natural fibers, and non-toxic paints to create their boats.

It is no wonder that Sunreef Yachts have been winning environmental awards for so many years. This solar sailboat is one of the most remarkable boats you can ever invest in and it clearly shows the latest advancements in technology .

Prices: about $8 million USD

Where to buy : Sunreef Yachts .

  • Larger surface covered with solar panels, that are installed also along the hull, and in other unusual areas.
  • The batteries are 30% lighter than normal
  • Unlimited cruising range.
  • It runs silently and does not cause pollution.
  • It has also traditional sails, so it can cruise also when it is not sunny without relying on batteries.
  • Luxury, superb quality and finishing
  • Great helm position.
  • The solar catamaran is very costly (going for $8 million USD or more).
  • The solar panels installed on the sides of the catamaran may not be appealing to the eye of all people.

Silent Yachts – Silent 80 Tri-Deck Solar Catamaran

Best pure electric

The Silent 80 Tri-Deck Solar yacht is popular for the large amount of space it offers.

This solar catamaran by Silent Yachts features three large decks that can be easily customized to fit the owner’s preferences and needs. The topmost deck can either be open or enclosed.

This solar powered yacht offers 4 to 6 cabins that are customizable, regardless of whether the deck remains open or enclosed. Besides, the top deck provides additional living space and can be used as a luxury master suite that opens onto a private space outdoors.

Where to buy : Silent Yachts .

  • Purely electric propulsion that can be helped by the kite sail.
  • The finishing, while being of high standards, doesn’t seem to be at the level of other options in its category.
  • Quite costly, with prices starting at about $6 million USD.
  • If going for a long cruise during cloudy days you may need to run the generator to keep going.
  • The kite sail helps to give some propulsion using wind, but it is less effective than traditional sails.
  • The absence of a traditional sail may make the boat a bit less stable, compromising a bit of the comfort while cruising.

Best for world cruising

HH Catamarans is a small boutique boat builder designing some of the most impressive solar boats for cruising, with one of their latest creations being the HH44.

The HH44 is a groundbreaking new boat that is designed to be eco-friendly and efficient.

The boat has a large battery bank that can be charged by solar panels, and also has two electric motors that can be used for electric propulsion up to 7 knots for up to 2h.

The HH44 has an innovative propulsion system named Eco-Drive. This is a parallel hybrid system that combines diesel and electric propulsion for long-range motoring and silent electric propulsion.

The boat also has two diesel engines, which can be used for long-range motoring or to generate electricity. The boat is also designed to be safe, with four propulsion devices plus sails and a large solar array.

The HH44 has a number of technical features that make it a groundbreaking eco-friendly design, including:

  • 3 types of propulsion: full electric, standard diesel, and sail.
  • 4.2 kWh of solar panels: generating power for recharging the lithium battery bank for solar .
  • 10 kW electric motors (5kW each): mounted on the back end of each diesel engine for electric propulsion.
  • The diesel engines can be used both for propulsion and as electric generators.
  • Possibility to use the propellers to recharge the battery while the boat is sailing. Kind of like using hydropower to charge your solar batteries , pretty cool!

The HH44 is also a performance catamaran thanks to its C-shaped §daggerboards. Daggerboards are an essential component of many sailing vessels, providing both vertical lift and increased upwind sailing performance.

This solar powered yacht features up to 4 double cabins and 2 heads . Not bad for this world-cruising vessel!

If instead, you are looking for a larger boat, HH Catamarans also have other models up to 88ft.

This solar catamaran was also the preferred choice of Gone with the Wynns , a popular cruising YouTube channel. Here’s their announcement video:

Where to buy : HH Catamarans .

  • A true performance world cruiser.
  • Very resilient with 3 different propulsion modes (electric, sail, and conventional engines) and ideal for offshore cruising.
  • It can run silently and without causing pollution.
  • More affordable than other solar catamarans, starting from $1 mm USD
  • Smaller than other options.
  • The improved sailing performance requires narrower hulls, which reduces the available space onboard compared to other traditional vessels of similar size

Best mid-range

The Silent 60 is one of the smaller electric boats made by Silent Yachts. It is designed to be handled by at least two people. The users can either choose to include an additional crew or not.

Despite its outward small appearance, Silent 60 is very spacious and can accommodate a good number of people.

Besides, the electric yacht has a beautiful design that adds to its elegant and luxurious feel. It is usually designed with up to 6 cabins , with each cabin offering every basic amenity you need to have a luxurious stay on the yacht. In fact, the electric solar boat is equipped with everything you need to allow you to live on board permanently!

Solar catamaran - Sunreef 43M Eco

As someone who loves spending time on the water, I was really excited to learn about the Sunreef 43M Eco: a superyacht that is both eco-friendly and luxurious.

I was especially impressed by the solar power system, which is built into the composite structures of the yacht, and the large hydraulic platform which creates a vast walkaround beach club.

The interior of the solar superyacht is just as impressive as the exterior, with a variety of sustainably-sourced materials and fabrics used throughout as well as energy-saving air-conditioning. The Sunreef 43M Eco can welcome up to 12 guests in the most luxurious conditions.

Silent Yachts – Silent 120 Explorer

Solar yacht - Silent 120 Explorer

Here’s another incredible solar super-yacht by Silent Yachts. The Silent 120 Explorer is a truly unique yacht, designed to explore the world in style and comfort.

Powered by solar energy, this solar catamaran is perfect for those who want to enjoy the beauty of the open seas without worrying about the impact on the environment.

With plenty of space for guests and all the amenities you need onboard, the Silent 120 Explorer is the perfect choice for your next adventure. If you’re looking for a yacht that combines luxury and environmental responsibility, the Silent 120 Explorer is a perfect choice.

The company didn’t yet release detailed information, however, this superyacht seems to be even featuring a helipad under the roof’s solar panels!

The Silent 120 Explorer has plenty of room for guests and all the amenities you need onboard. So if you’re ready to embark on your next great adventure, be sure to consider the Silent 120 Explorer, which will likely start being delivered in 2023.

The 100 Sunreef Power Eco

Sunreef recently launched and sold their first 100 Sunreef Power Eco catamaran, a transatlantic luxury craft that takes solar boat design to the next level.

With massive living space, great autonomy, and impressive features like a flybridge that can be transformed into an outdoor cinema, the 100 Sunreef Power Eco is the perfect vessel for cruising in supreme luxury

This catamaran uses the latest innovations in solar power to achieve outstanding energy efficiency, and its ultralight battery bank provides for silent cruising and infinite range.

The fully customizable interior and exterior make this catamaran a truly one-of-a-kind option, and its use of ethically-sourced and eco-responsible materials is sure to please even the most discerning buyer.

If you’re looking for an electric yacht that is both luxurious and eco-friendly, the 100 Sunreef Power Eco is certainly a great option for you if you can afford it!

The most affordable $

The Aquanima 40 catamaran is entirely powered by solar energy. It features creative adaptations and unique innovations that make it eco-friendlier and more economical boat than other solar-powered catamarans. For example, the solar panels installed on the electric catamaran are built in such a way that they can sell any excess solar energy back to shore stations when connected.

The exterior of the Aquanima 40 has an elegant design. Also, the interior is not only aesthetically pleasing, but also very clean and modern.

The boat is designed with 2 single cabins for the crew and 2 double cabins for guests.

Indeed, this solar boat by Azura Marine is one of the most economical and cost-effective options you can go for when buying a solar catamaran.

  • Relatively fast.
  • Ideal for short vacations.
  • The most affordable solar catamaran, starting at about $0.6 million USD.
  • Much smaller than other options.
  • Not recommended for long cruises.
  • Basic looks and layout.

As its name suggests, the Soel Senses 48 is 48 feet long. It has a slender design and is lightweight , making it more economical than most other solar-powered boats.

The boat is designed with two sleeping berths that can accommodate two people each. It also includes a salon that can offer enough sleeping space for four people. 

Compared with most other solar yachts, the Soel Senses 48 has a much smaller size. Its size, adding to its sleek and innovative design, give it faster speed than other solar-powered boats.

It incorporates 12 solar panels installed on the roof ; all these panels generate a combined electrical power of up to 2.7 kWh. The electricity generated by the solar panels is then stored in two batteries which can be easily configured to hold a maximum solar power of 142 kWh.

Like other Soel Yachts, the Soel Senses 48 glides smoothly over water without causing any noise, rattles, or generating fumes.

It has average cruising speeds of 10 knots, even reaching top speeds of up to 18 knots. However, the solar catamaran cannot run at its top speed for long periods.

Both the interior and the exterior of the Soel Senses 48 have a sleek and modern design. Every single component of the solar catamaran has been designed carefully to make it as functional and comfortable as possible. Therefore, when you board on this boat, you can expect to experience one of the best sailing experiences of your life.

The Serenity 64 Yacht features a diesel engine. It is a hybrid solar boat, which means that it can run on either solar power or on diesel.

The diesel engine especially comes in handy when the users wish to achieve faster cruising.

The solar catamaran is a very spacious electric boat and provides plenty of living space. It is built with four luxurious cabins, with each cabin having its ensuite bathroom. And even though the Serenity 64 is smaller than the Serenity 74 model also built by Serenity, it still provided an elegant feel and a smooth sailing experience.

Solar Boats Pros and Cons

Solar Boats pros and cons

The sun is a powerful and free source of energy, making solar power an attractive option for those looking to power their yacht. Solar panels can be used to generate electricity to run the yacht’s lights, appliances, and even the engine. Solar power can also be used to heat water for showers and laundry. But, what are the pros and cons of solar catamarans?

Here’s a quick summary of the solar yachts’ advantages and disadvantages:

Advantages of solar boats ✅Disadvantages of solar boats ❌
Eco-friendly: solar power is clean and renewableMore expensive than standard boats
They (mostly) don’t require fuelSolar panels work well only during sunny days
ReliableYou will still need a (diesel) generator onboard: for both safety and continuity of power
Reduced maintenance costsReduced stability while cruising (If without sails)
Cost-effective in the long runThe smaller versions of solar yachts will have quite limited cruising speed when using only the power from solar
Potentially unlimited range, especially for the larger solar catamarans
Possibility to sell back the excess power to shore (when connected)
No restrictions on electrical use

One of the main benefits of solar power is that it is renewable and environmentally friendly. Solar panels have no emissions and do not produce pollution. In principle, they also do not require fuel, making them very cost-effective in the long run. Solar power is also very reliable, as the sun is a constant source of energy.

There are a few disadvantages to solar power. Solar panels can be expensive to install, and while they require less maintenance, this can be quite costly, especially when it will come time to replace the batteries. Solar panels also need to be pointing directly at the sun to be effective, so they may not generate power on cloudy days or at night.

But there’s more, let’s see what some sailing experts are thinking about solar catamarans!

Sailing expert’s solar Boat review

Recently, one of the most popular sailing YouTube channels, Saliling La Vagabonde , published a very honest and interesting review of the solar powered yacht Silent 55. Here’s a summary of their experience:

  • 7 Days onboard (6 nights)
  • Travelled 145nm with an average speed of 7 knots
  • Generator used for about 12h (in total)
  • Fuel consumed: 208 liters

Here are some interesting observations they made:

  • While cruising it may feel less stable than a standard sailing boat because it doesn’t have a sail to stabilize it when hitting the waves.
  • For the Silent 55 it was possible to move at about 3 knots by using only the power generated by the solar panels (without using the batteries) on a sunny day. This means that if you are moving the solar yacht around quite frequently, you will end up using the generator quite a lot to produce the necessary power.
  • When the batteries are out of power, the Silent yacht is using a (diesel) generator to supply the necessary power to keep the boat moving and to power the appliances.
  • A great luxury yacht with all the comforts and going in the right direction for the future of the sector.
  • Overall, the Silent Yacht is a great eco-friendly alternative to a power boat , while if you are thinking about cruising around the world, you would be probably better off going for a standard sailboat (or for some of the hybrid alternatives mentioned in this article, like the HH44).

Why are solar yachts all catamarans?

Solar yachts are all catamarans for 2 main reasons:

  • Catamarans have a larger surface, which allows for placing more solar panels and also offers more room for the batteries onboard.
  • Catamarans have efficient hulls for their size. This reduces their power consumption while moving.

This makes catamarans the ideal platform to build a solar-powered boat.

Modern solar electric boats are undoubtedly an eco-friendly choice in sea travel and a form of green tourism . Not only do these electric boats provide a smooth sailing experience, but they also reduce the release of emissions into the atmosphere, reducing the environmental impact and enhancing sustainability .

Luckily, given their size, solar catamarans can charge themselves (unlike electric cars ), so they can sail indefinitely without the need to stop for refueling.

If you are environmentally conscious and looking to get a boat that is more viable, desirable, and eco-friendly, you may consider investing in one of the solar yachts discussed in this article!

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Bering Yachts introduces new 24m catamaran model BC80 with two configurations

Bering Yachts introduces new 24m catamaran model BC80 with two configurations

Turkish shipyard Bering Yachts has announced a new 24-metre catamaran model known as BC80 at this year's Cannes Yachting Festival.

The yacht is the largest in its class at 24 metres and is joined by the 18.9-metre BC60 and the BC70, which measures 21.3 metres. Owners can choose between two layouts: the flybridge version and the solar-powered version.

The first has been billed as a "more classic yachting experience", featuring an expansive 82-square-metre flybridge and 1,000 square feet of solar panels which can generate over 20kW of energy on a sunny day. The yacht can then remain at anchor for extended periods without relying on generators.

Meanwhile, the solar-powered version is suited to "the environmentally conscious adventurer", with a massive solar panel array, high-capacity lithium-ion battery bank and a state-of-the-art "kick-saving" system. This system significantly reduces generator dependence and allows guests to enjoy silent cruising for up to 24 hours without running the generators.

The BC80's impressive interior volume is aided by an expansive 10.8-metre beam, giving guests the "ultimate three-decker experience" with a spacious main deck with 2.4 metres of headroom, a dedicated upper deck with flybridge option, and a comfortable lower deck. In terms of accommodation, owners can choose between four, five or six cabins with the option of a master suite on the main deck.

The standard layout features a galley positioned forward on the main deck, while all guest accommodations are located in the sponsons (hull extensions) for extra privacy and reduced noise.

Powered by a pair of Volvo Penta engines, the yacht will reach top speeds of 15 knots and a cruising speed of 10 knots.

This follows the news that the steel hull of its 39.5-metre B125 model had been transported from Istanbul to Antalya ahead of outfitting . Delivery is anticipated for September 2024.

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