Vision & Technology Welcome To The New Era Of Yachting
silent yachts history

The future of luxury yachting is solar

SILENT-YACHTS was founded on the dream of...

SILENT-YACHTS was founded on the dream of eliminating the major downfalls of yachting as well as the disastrous effects on the environment without sacrificing the slightest bit of luxury.

Experience the true meaning of freedom

On every SILENT-YACHT, solar power is not only used...

On every SILENT-YACHT, solar power is not only used for the propulsion of the vessel, but also for providing energy to all navigation, comfort and household appliances on board. This means you can enjoy all the comfort on board in a sustainable manner while having the possibility of unlimited range.

Historical facts about SILENT-YACHTS

As the very first - fully solar powered - production...

As the very first – fully solar powered – production yacht in the history of nautical travel, the SILENT 64 crossed the entire Atlantic Ocean in February 2018. This extraordinary achievement proved the outstanding durability and efficiency of the SILENT solar-electric drivetrain even during unfavorable and rough weather conditions.

The Next level of comfort & tranquility

The exceptionally relaxing ambience on board of...

The exceptionally relaxing ambience on board of a SILENT-YACHT characterized by the absence of vibration, noise and smell. Instead, the seamless solar-electric drivetrain complements the luxurious amenities to offer its guests unprecedented levels of comfort and pleasure.

Enjoy the sound of silence with SILENT YACHTS

As true sailors we embrace the warming rays of...

As true sailors we embrace the warming rays of the sun, preserve the purity of untouched ocean waters and cherish the sound of silence that surrounds us during our most memorable moments on deck.

OUR MISSION

Create an independent and environmentally friendly yachting experience which combines the silent cruising of a sailing boat with the luxury of a motor yacht.

Therefore, SILENT-YACHTS are the first and only ocean-going production yachts in the world which are exclusively powered by solar energy.
This means nothing less than being fully solar sustainable while having the possibility of unlimited range with zero emissions.

TESTIMONIALS

I would not even consider buying another boat!

Klaus Obermeyer, Emmy Award Winner

You are not just selling boats – you are the actual leading edge of a crucial and much overdue revolution to sustainable transport!

Klaus Obermeyer, Emmy Award Winner

Having designed and built the Island Pilot DSe 12m (diesel/solar-electric powered cruising cat), I understand and appreciate the fantastic accomplishment you have achieved with the SILENT-YACHT. Congratulations!

Reuben Trane, CEO of Island Pilot Shipyard

SILENT-YACHTS is an unique, wonderful project that illustrates the opportunities and perspectives of solar and energy-independent mobility. Full batteries instead of empty fuel tank at the end of a journey – with all the fun and comfort for free!

Gernot Apfelstedt from Boote magazine, Germany

This one man [Elon Musk] single handedly forced an entire industry to go electric, as a matter of fact if they don’t all go electric now they will soon die. I would like to see the same thing happening for boating.

Klaus Obermeyer, Emmy Award Winner

Stay with this strategy – you will be the winner in the long run. In any case ecologically.

Adolf Kunkel, Germany

SILENT-YACHTS is an unique, wonderful project that illustrates the opportunities and perspectives of solar and energy-independent mobility. Full batteries instead of empty fuel tank at the end of a journey – with all the fun and comfort for free!

Gernot Apfelstedt from Boote magazine, Germany

With your SILENT-YACHTS you not only show a technical solution, but also demonstrate a way of life, which shows that it can go without pollutant emissions. 

Robert Schoblick, Publisher of e-motion.net

The people do not know how much money and trouble they could save themselves by reading your book – “Energy supply on yachts” (written by CEO Michael Köhler).

Jens Steinhaus, Germany

A sensational pioneering achievement in terms of electric mobility! That’s the future!

Peter Geisler, Germany

You are Heroes, Pioneers! The book of history, should have a golden page with YOU and your accomplishments in it!

George Kakissis, Greece

Nothing is beautified here – no “brochure advertising” as usual! It is rather understated. The reality is still a lot more beautiful!

Stefan Merker, Germany

We agree – that was the best holiday we have spent so far!

Dr. Matthias & Uschi König, Austria

It fills me with pride to spend my first environmentally conscious holiday on your boat. In a few years, it will be something normal to spend a holiday in nature, without burdening her.

Manfred Berger, Austria

The sun shines only faintly through the cloud cover, yet the SILENT-YACHT drives. The 60 m² solar panels produce so much energy that the catamaran can drive up the Rhine (German river) with 10 km/h, despite the countercurrent. 

SWR - German national TV station
What they bring to life is important to people and hopefully helps to steer the energy policy view of things in the right direction. Thank you very much, also in the sense of my children.
ABAU - Austrian builder network, Austria
The sun shines only faintly through the cloud cover, yet the SILENT-YACHT drives. The 60 m² solar panels produce so much energy that the catamaran can drive up the Rhine (German river) with 10 km/h, despite the countercurrent. 
SWR - German national TV station

A great project, which you brought into the water – we are very impressed!
Many thanks for the informative trip – we hope that the solar ship will prevail in the long run!

ZDF - German national TV station

A great project, which you brought into the water – we are very impressed!
Many thanks for the informative trip – we hope that the solar ship will prevail in the long run!

ZDF - German national TV station

Heike and Michael – two, who do not talk, but make! With the motto competence and passion you stand for innovation and progress.

Reiner „Calli“ Calmund, Germany

Aside from the obvious benefits of having a solar powered yacht, I was immediately attracted to the design of the SILENT 80. To me, it was a great synthesis of form and function.

Neil Murray, Co-founder of the NASDAQ listed company mimecast.com

The SILENT 55 is the most technically advanced project to date from Austria yacht designers SILENT-YACHTS!

Jonathan Bell from Wallpaper magazine, UK

One of the most innovative world premieres to take place during Yachting Festival Cannes 2018 was the debut of the SILENT 55, the first transatlantic solar-electric production catamaran.

Vivian Hendriksz from Superyacht Times, UK

RADICAL INNOVATION

  • Autonomy
    SILENT-YACHTS are true world cruisers with the possibility of unlimited range, even when the sun is not shining. In case of longer periods of bad weather, the range extender automatically starts to recharge the lithium Batteries when they are low. Their capacity provides ample energy for propulsion as well as all household appliances including the air conditioning, ice-machine, water-maker or laptops (230 VAC / 110 VAC). There is no need to search for a marina in order to charge the batteries, get ice, refuel or to fill the water tanks. A SILENT-YACHT can virtually cruise for weeks without fuel or the need to start the generator.

  • Luxury
    High levels of luxury require permanently available energy. On a SILENT-YACHT, you can watch TV, enjoy a cold beer, have the air conditioning running and produce up to 2000 liters of drinking water per day without starting the generator. The air conditioning cools down the boat quickly and efficiently whenever needed. This, of course, is also true for heating during cold weather.

  • Efficiency and Weight
    Underwater lines are optimized by Computational Fluid Dynamics (CFD) and towing-tank tests. The lightweight construction is a result of bionic design, the use of carbon fibers and high-quality resins. Interior furniture is made of stiff and lightweight composite plates with real wood-veneer. This reduces the weight significantly to about half the weight of a conventionally constructed and powered yacht. Each kg / pound saved is equivalent to less wave drag and friction and therefore less energy required to move the boat.

    Overall, this leads to high levels of efficiency enabling fast and self-sustaining propulsion. Salon and cabins are wrapped in thermal insulation. Furthermore, all windows are shaded by either the roof and/or the hull, thus lowering the energy consumption needed to keep the interior at comfortable temperature levels.

  • Reliability
    All the electrical components are of high industrial quality and are being engineered / built in Europe and the USA. Motors, inverters and their cables are IP69 certified. This means that they even work when permanently submerged in highly pressurized water. In comparison to a conventional diesel powered propulsion system an electric motor is far more reliable as the only moving parts are the rotor and its two bearings. Fuel bases problems are an issue of the past as well. All wirings are tin-coated and all plugs feature a custom design which prevents humidity and water from entering. Additionally, all parts exposed to the marine environment are made of corrosion resistant materials.

  • Redundancy & Safety
    All vital components are redundant to ensure double safety. The configuration of all components makes sure an overload is impossible, making the solar-electric drivetrain far safer than conventional propulsion systems. We are also proud to say that our catamarans were the first to be certified according to DIN EN ISO 16315 for the marine operations of electrically powered yachts.

ENERGY GENERATION & CONSUMPTION

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PROVEN TECHNOLOGY

Batteries:
The energy is stored in state-of-the-art lightweight lithium batteries. Whenever the sun is not shining or more power is needed than the solar panels produce at that time, they provide ample energy for the propulsion system as well as all household appliances. SILENT-YACHTS only installs batteries which provide top notch reliability, safety and performance.

Drivetrain Efficiency:
While combustion engines have an energy efficiency of around 30%, electric motors feature an energy efficiency rate of more than 98%. This saves a lot of power and emits significantly less heat. For the same reasons, we use an induction cooktop and an electric stove in the kitchen. Therefore, no propane gas is needed on board. This reduces the risk of a fire hazard and creates less heat inside the boat.

Maintenance:
There is no maintenance required for the solar panels or the batteries. The electric motors need a set of two new bearings after 50.000 hours of usage. In case your personal usage does not exceed 500 hours per year, these bearing replacements would only be required every 100 years (!). Minor maintenance works are only required on the generator. These factors combined lead to much lower running costs in comparison to a conventionally powered yacht.

Solar Panels:
The photovoltaic modules recharge the batteries and are the main power source of our yachts. We use the most efficient, most advanced and highest quality modules currently available. Their arrangement, the positioning and the regulation of charge are some of the main secrets and reasons why our yachts are able to harvest that much energy from the sun – sufficient to power all household appliances, all devices that you need for your comfort and even the propulsion system.

Range Extender:
A SILENT-YACHT can cruise for up to 100 miles a day without fuel. During longer periods of unfavorable weather conditions or whenever higher speeds are required for more than a couple of hours, a powerful diesel generator recharges the batteries. This gives you the confidence that you will never run out of power and makes sure you can sustain higher cruising speeds even in bad weather conditions for longer periods of time.

Warranty:
We grant lifetime warranty on the electric motors, 25 years on the solar panels and 8 years on the batteries.

Our Awards