The silent 80-foot solar-powered catamaran

The SILENT 80 represents the flagship of the SILENT fleet. Guests onboard experience premium levels of comfort, refinement, and luxury. Every journey on board transforms into a story of pleasure.


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.


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

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.


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 that 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.


Welcome To The New Era Of Yachting. You can find out more about the SILENT-YACHTS from the link below:


ELMA Rally