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Solar electric yacht builder Silent Yachts has announced an all-electric tender to support its growing lineup of zero-emissions ships. Despite being a tiny vessel, the SILENT Tender 400 was built with the same design standards as Silent Yachts’ larger boats. Built with carbon fiber and up to 30 kW of electric power, the Tender 400 is light and agile, whether it’s sitting on the stern, or transporting up to six people to and from shore. Have a look.

Silent Yachts was founded by Heike and Michael Köhle, who together have sailed over 75,000 nautical miles around the world. Following their extensive travels at sea, the two decided there had to be a better way to propel yachts with clean energy.

After five years of sea trials that began in 2010, Silent Yachts had developed proven solar yacht concept, and began serial production of luxury sustainable vessels in 2016 with the SILENT-64. In the past, we’ve covered Silent Yachts’ larger vessels, like our trip aboard the SILENT-60, which first debuted in 2021.

As the solar electric yacht developer continues to expand into bigger and better at sea, it has shaken things up with a small but mighty electric tender to provide added mobility to its customers.

Silent Yachts’ electric 400 Tender is ultra light and efficient

According to the press release from Silent Yachts, its all-electric SILENT Tender 400 measures four meters from transom to bow and takes a number of design cues from its 60- and 80-foot siblings, including its signature black and white finish.

Thanks to its carbon fiber design, the electric tender weighs just 90 kg (198 lbs), making its easier to lift in and out of the water using the hydraulic platform on the SILENT-60 for instance. Light weight also makes the all-electric SILENT Tender 400 ultra-efficient, offering the capability to transport at speeds over 20 knots. Founder and CEO Michael Köhler elaborated:

We are very proud to present the new SILENT Tender 400, which is one of the most efficient electric tenders on the market. It follows the same design principles as our award-winning electric yachts, with dimensions that enable it to fit both the SILENT 60 series and SILENT 80 series yachts. What is more, the hull gives passengers a really dry ride, even at speed and in confused seas.

Yacht owners who add the electric tender can choose between 20 kW inboard waterjet propulsion system, or a sportier outboard motor capable of 20 or 30 kW. Customers can also choose between a 16 kWh or upgraded 20 kWh lithium battery. Silent Yachts states the electric tender can cruise comfortably at 10 knots for at lease two hours before needing to recharge. With fast charging onboard, the SILENT Tender 400 can replenish in 2.5 hours.

This electric tender is currently designed for the SILENT-60 solar electric yacht, but can also be used on the SILENT-80 or any other yacht. Looking ahed, the company says it is already developing a larger, 5.1 meter electric tender designed specifically for its SILENT-80 series at the request of its customers. Check out the SILENT Tender 400 in action below:

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California-based startup unveils 58 MPH electric jet ski on hydrofoils

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California-based startup unveils 58 MPH electric jet ski on hydrofoils

It’s an exciting time for personal watercraft enthusiasts that want to swap a roaring engine for the instantaneous (and silent) power of electric motors. The latest electric jet ski making a splash is the Valo Hyperfoil.

Technically speaking, it’s not actually a jet ski, nor is it making that much of a splash. “Jet Ski” is a brand name owned by Kawasaki, and the Valo Hyperfoil isn’t really making a splash because it’s actually flying above the waves on hydrofoils.

But whatever you call it and whichever hydro-based pun you shoehorn into an electric watercraft article, the Valo Hyperfoil is certainly an impressive machine.

Unveiled today by California-based startup Boundary Layer Technologies, the Valo Hyperfoil is one of the most advanced personal electric watercraft we’ve ever seen.

Not only is it quite powerful, packing in a 108 hp (80 kW) motor, but it can reach a maximum speed of 50 knots (58 mph or 93 km/h).

And it will do so while flying a full 2 feet (60 cm) above the surface of the water.

As founder and CEO of Boundary Layer Technologies Ed Kearny explained in a statement provided to Electrek:

“Valo will be a complete revolution to personal watercraft. The first Jetski was on the market 50 years ago this year, and it’s time for a major upgrade. Valo will be fast, agile, and tremendously exhilarating, all while being near silent and leaving zero wake. It will be like flying a stunt plane but on water. We see this a completely new form of water based mobility”

The secret to the flying nature of the Valo is its hydrofoils, which function like a set of airplane wings under water.

They lift the watercraft out of the dense water, helping it to save energy by flying through the air. That makes the ride smoother, faster and more efficient. It also means that the Valo can get by with fewer of those heavy and expensive batteries.

The company has spent the last four years developing hydrofoil technology for commercial purposes, such as passenger ferries and container ships. Now the company is hoping to apply that technology to the recreational market with a personal electric watercraft.

As Kearny continued:

“We are passionate about bringing foiling technology and its huge benefits to ships big and small. We simply shifted from ‘big first’, to ‘fast first’.  What we love about Valo is how fast we can get to market. We are bringing all the technology we were developing for massive container ships and ferries and using it to deliver one hell of a recreational product.”

Hydrofoiling boats have been made famous by the Swedish company Candela, who is already building and delivering electric speedboats with impressive hydrofoiling performance. The company is also working on passenger ferries and water taxis for commercial use, but hasn’t shown off a personal electric watercraft like the Valo.

Other companies like Taiga have leveraged their electric snowmobile technology to demonstrate personal electric watercraft. But their planing hulls will have a hard time matching the efficiency of hydrofoils like those displayed on the Valo.

Boundary Layer Technologies expects to have a small number of limited edition Founders Edition Valos by the summer of 2023 Full production vehicles aren’t expected to hit the water before 2024. The anticipated price for the production vehicles is $59,000, though we don’t yet know what price tag those first run Founders Edition vehicles will carry.

Until then, we can at least look at these pretty renders.

valo jet skit

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Quick Charge Podcast: November 30, 2022

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Quick Charge Podcast: November 30, 2022

Listen to a recap of the top stories of the day from Electrek. Quick Charge is available now on Apple PodcastsSpotifyTuneIn and our RSS feed for Overcast and other podcast players.

New episodes of Quick Charge are recorded Monday through Thursday and again on Saturday. Subscribe to our podcast in Apple Podcast or your favorite podcast player to guarantee new episodes are delivered as soon as they’re available.

Stories we discuss in this episode (with links):

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Drop us a line at tips@electrek.co. You can also rate us in Apple Podcasts or recommend us in Overcast to help more people discover the show!

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Hitachi Energy debuts wireless grid tech that prevents wildfires

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Hitachi Energy debuts wireless grid tech that prevents wildfires

Hitachi Energy just launched wireless Spark Prevention Unit indicators that help prevent wildfires by enabling remote monitoring.

According to the US Department of Energy, approximately 10% of wildfire ignitions are sparked by faults on electrical infrastructure or electric equipment failure. Hitachi Energy’s new Wireless SPU Indicators allow utilities to monitor the grid remotely, in real time, with automated visual inspection rounds.

The SPU monitors the current and thermal load of surge arresters – which protect equipment from surges in the power system – installed in wildfire risk areas.

If there’s a thermal overload in the grid, the SPU interrupts the current flow and disconnects the surge arrester, thus preventing any arcing – which is when a circuit becomes overloaded and overheats – sparking, or ejection of hot particles that could potentially start a wildfire.

Hitachi Energy’s new Wireless SPU Indicator

A visual indicator on the SPU lets the utility field crew know that it needs to be replaced. Hundreds of thousands of SPUs installed in some of the world’s most wildfire-prone areas, such as in the United States and Australia, have had a real impact in preventing wildfires. Being able to monitor them remotely is only going to improve wildfire prevention.

Read more: How the US can achieve resilient power grids and support EV deployment

Photo: Pok Rie on Pexels.com


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Michelle Lewis

Michelle Lewis is a writer and editor on Electrek and an editor on DroneDJ, 9to5Mac, and 9to5Google. She lives in White River Junction, Vermont. She has previously worked for Fast Company, the Guardian, News Deeply, Time, and others. Message Michelle on Twitter or at michelle@9to5mac.com. Check out her personal blog.


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