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Transportation electric flying boat flying high  the candela 7 | Upload Battery

Electric Flying Boat Flying High: The Candela 7

by: Joyce Mahler
electric flying boat flying high  the candela 7 | Upload

With their third production boat completed and recent selection as one of Sweden’s hottest tech start-ups, Candela Speedboat is making waves everywhere except when its hydrofoil design flies above the water.

Electric Flying Boat The Candela 7: Gustav Hasselskog

When Gustav Hasselskog founded Candela in 2014 to create an electric boat matching the range and speed of a gas burner, he knew it would be challenging. So he put together a crack team of people with backgrounds in hydrodynamics (with 6 America’s Cup wins), flight control electronics, structural composite engineering, and the software used for dynamic modeling.

We refer to the Candela as an electric flying boat because it uses hydrofoils – kind of underwater wings – to allow the hull to ‘fly’ above the water, similar to the hydro foiling SeaBubbles electric water taxi which has received so much attention.

Candela electric speedboat, hydrofoil, water, lake

Recommended: Electric Boat Sea Bubbles: Hydrofoil In Paris, France

Electric Flying Boat: Designed To Change The Industry

That isn’t to say there aren’t dozens of great electric boats that plane on the water in a usual way and provide excellent and environmentally performance using an electric motor instead of a gas one. To name just a few: 

  • SAY Carbon 29 which holds the speed record for production electric boats the Evoy 1 from Norway
  • Frauscher’s electric 747
  • The Brookfield RIB with Pure Watercraft electric outboard
  • GS22E ski and waterboard towboat just launched by Nautique

Hasselskog, though, decided to take a different approach and go the hydro foiling route mainly because of one significant factor: water is thicker than air. No matter how light you make a hull, or maximize its hydrodynamic shape, it takes an awful lot of energy to overcome the friction and resistance – drag– of a boat hull moving through water.


                                                                  Candela electric hydrofoil speedboat

Candela’s research indicated 'a 7.5 meter (24 ft) planing boat consumes 12-18 times more fuel than a family car'.

Flying Boats: History

Prototypes

The first evidence of a hydrofoil on a vessel appears on a British patent granted in 1869 to Emmanuel Denis Farcot, a Parisian. He claimed that "adapting to the sides and bottom of the vessel a series of inclined planes or wedge-formed pieces, which as the vessel is driven forward will have the effect of lifting it in the water and reducing the draught.”. Italian inventor Enrico Forlanini began work on hydrofoils in 1898 and used a "ladder" foil system. Forlanini obtained patents in Britain and the United States for his ideas and designs.

Forlanini's hydrofoil, water, mountains, sky

Forlanini's hydrofoil over Lake Maggiore, 1906

Recommended: How A Fossil Fuel Seaplane Got Converted Into An e-Plane

Hydro Foiling Electric Boats: Candela, A Whole New Level

Candela has taken the concept to an entirely different 21st-century level, which is where the team of multi-discipline experts comes in. Weight, of course, is a factor in hydro foiling, so the hull, deck, and deck parts of a Candela 7 are all carbon fiber. That’s the structural composite engineering part.

The flight control electronics and software management expertise has been applied to the hydrofoils. Traditional hydrofoils are static, but when the Candela is in electric flying boat mode seven sensors capture the position, velocity, and acceleration of the boat in regards to x, y, and x and rotation around the same axis. They feed the information to the flight control software, and the wings are automatically and continuously adjusted to maintain the best height, roll, and pitch.

Interior electric speedboat Candela 7

Electric Boats: Physics And Batteries

The challenge faced by all e-boat designers is one of physics and current battery technologies. One kilogram of gasoline holds about 15 times the usable energy of the best battery packs, and weight is not suitable for speed. Working to the benefit of the electric boat is that the electric motor itself is much more efficient at converting that energy into motion. Still, all boats have to face the physics facts that even a planing boat needs an awful lot of energy just to get through the water.

So a hydrofoil that raises the boat above the water gives a significant advantage in terms of both energy efficiency and speed. On the other hand, something flying above the water is inherently less stable than something traveling in the water.

Recommended: Solar Powered Houseboats The Netherlands: +31Architects

Electric Flying Boats: What About The Foils?

One question you might have is, what happens to the foils when the boat is in shallow water? The foils can be fully retracted into the hull, and the motor can be tilted up, giving the boat a draft of only 0.4 meters / 1 foot 3 inches.

The other question you might have is how the boat performs when there is a bit of a chop – or more – on the water. The video Candela posted on its Facebook page is pretty impressive. It shows the boat on April 6 in with the comment: From last week’s storm over Stockholm. Rough weather sea trials and benchmarking the

Candela hydrofoil electric boat, rogh water

Candela 7: Production

After some improvements, tweaks, and proof of the refinements, the company started production for customers in the autumn of 2018. At the time, Hasselskog told Swedish tech site NYTeknik website, "It feels exciting and a bit scary to be up and running! But we believe in this technology and believe that it will fit properly as soon as we get our boats out into the market."

The big reveal of the boat was at Sweden’s first all-electric boat show in Stockholm, where a full speedboat unexpectedly rising out of the water caused enough of a stir to be featured on Swedish national TV news. Three of the SI model boats have now been completed. In addition to all of this progress, the company was also added to Sweden's  33 List of the country’s most exciting tech start-ups. Others that have been similarly honored in the past include Spotify and Minecraft.

Recommended: Solar And Wind Power Makes The Current Sail Cargo Ship

Electric Boats: No Traditional Boat Building

The achievement is a recognition that creating a flying watercraft like the Candela S1 is not your traditional ‘boat building.’ There is a patent-pending system that controls the height, roll, and pitch of the hydrofoils, and innovation necessary because the flaps and ailerons that larger commercial hydrofoils use wouldn’t be robust enough for consumers.

  • A mechanism was designed to retract the foils into a step in the hull (front) and the swim platform (aft) for shallow waters and storage.
  • A flight controller captures the boat’s movements from 7 sensors and uses advanced sensor fusion algorithms to overcome the inherent instability of foils.
  • Ultra-light hull materials are used, including a carbon fiber single skin in the hull, deck, hydrofoils, and interiors.

Electric Flying Boat: Awards Winner

Not surprisingly, all this impressive innovation has brought Candela some nice accolades and awards: nominated for European Powerboat of the Year, and winner of ‘Best for Future’ at the Best of Boat Awards and ‘Best Foiling Boat’ (it was the only electric model) at Foiling Week.

The most excellent awards, though, might be found in the testimonials from first purchasers on the Candela website:

"With six people aboard, we typically drive at close to full speed, 30 knots, and cover the stretch from Stockholm to our summer house in just over an hour. Even though we’re loading up the boat with passengers and gear, we always arrive with plenty of juice left in the battery pack."

Recommended: Hydrogen-Powered Energy Observer Reaches London: The Future

Electric Boat The Candela: Specifications

Candela 7 electric boat, fiberglass hull

On their website, Candela says that hull and deck together weigh about 250kg / 500lb and that a similarly sized fiberglass could weigh six times as much.

  • Lft. 7,70 m;
  • b.max: 2.40 m
  • Weight: 1300 kg
  • draught: 0,4 (foil lifted)- 1,2 (foil immersed) m
  • maximum speed: 30 knots
  • more efficient speeds: 19-23 knots
  • minimum foling speed: 17 knots
  • range: 50 miles + 8 miles at 3 knots

None of this comes cheap, of course. The price of a Candela S1 is £190,000 / US $210,000. But the cost doesn’t seem to be getting in the way of Gustav Hasselskog’s 2014 dreams. He says they already have about 150 advance orders.

For more information go to candelalaspeedboat

Before you go!

Recommended: Solar Powered Silent 55 Yacht Allows You To Cruise The World

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Electric Flying Boat Flying High: The Candela 7

With their third production boat completed and recent selection as one of Sweden’s hottest tech start-ups, Candela Speedboat is making waves everywhere except when its hydrofoil design flies above the water. Electric Flying Boat The Candela 7: Gustav Hasselskog When Gustav Hasselskog founded Candela in 2014 to create an electric boat matching the range and speed of a gas burner, he knew it would be challenging. So he put together a crack team of people with backgrounds in hydrodynamics (with 6 America’s Cup wins), flight control electronics, structural composite engineering, and the software used for dynamic modeling. We refer to the Candela as an electric flying boat because it uses hydrofoils – kind of underwater wings – to allow the hull to ‘fly’ above the water, similar to the hydro foiling SeaBubbles electric water taxi which has received so much attention. Recommended: Electric Boat Sea Bubbles: Hydrofoil In Paris, France Electric Flying Boat: Designed To Change The Industry That isn’t to say there aren’t dozens of great electric boats that plane on the water in a usual way and provide excellent and environmentally performance using an electric motor instead of a gas one. To name just a few:  SAY Carbon 29 which holds the speed record for production electric boats the Evoy 1 from Norway Frauscher’s electric 747 The Brookfield RIB with Pure Watercraft electric outboard GS22E ski and waterboard towboat just launched by Nautique Hasselskog, though, decided to take a different approach and go the hydro foiling route mainly because of one significant factor: water is thicker than air. No matter how light you make a hull, or maximize its hydrodynamic shape, it takes an awful lot of energy to overcome the friction and resistance – drag– of a boat hull moving through water. {youtube}                                                                   Candela electric hydrofoil speedboat Candela’s research indicated 'a 7.5 meter (24 ft) planing boat consumes 12-18 times more fuel than a family car'. Flying Boats: History Prototypes The first evidence of a hydrofoil on a vessel appears on a British patent granted in 1869 to Emmanuel Denis Farcot, a Parisian. He claimed that "adapting to the sides and bottom of the vessel a series of inclined planes or wedge-formed pieces, which as the vessel is driven forward will have the effect of lifting it in the water and reducing the draught.”. Italian inventor Enrico Forlanini began work on hydrofoils in 1898 and used a "ladder" foil system. Forlanini obtained patents in Britain and the United States for his ideas and designs. Forlanini's hydrofoil over Lake Maggiore, 1906 Recommended:  How A Fossil Fuel Seaplane Got Converted Into An e-Plane Hydro Foiling Electric Boats: Candela, A Whole New Level Candela has taken the concept to an entirely different 21st-century level, which is where the team of multi-discipline experts comes in. Weight, of course, is a factor in hydro foiling, so the hull, deck, and deck parts of a Candela 7 are all carbon fiber. That’s the structural composite engineering part. The flight control electronics and software management expertise has been applied to the hydrofoils. Traditional hydrofoils are static, but when the Candela is in electric flying boat mode seven sensors capture the position, velocity, and acceleration of the boat in regards to x, y, and x and rotation around the same axis. They feed the information to the flight control software, and the wings are automatically and continuously adjusted to maintain the best height, roll, and pitch. Electric Boats: Physics And Batteries The challenge faced by all e-boat designers is one of physics and current battery technologies. One kilogram of gasoline holds about 15 times the usable energy of the best battery packs, and weight is not suitable for speed. Working to the benefit of the electric boat is that the electric motor itself is much more efficient at converting that energy into motion. Still, all boats have to face the physics facts that even a planing boat needs an awful lot of energy just to get through the water. So a hydrofoil that raises the boat above the water gives a significant advantage in terms of both energy efficiency and speed. On the other hand, something flying above the water is inherently less stable than something traveling in the water. Recommended:  Solar Powered Houseboats The Netherlands: +31Architects Electric Flying Boats: What About The Foils? One question you might have is, what happens to the foils when the boat is in shallow water? The foils can be fully retracted into the hull, and the motor can be tilted up, giving the boat a draft of only 0.4 meters / 1 foot 3 inches. The other question you might have is how the boat performs when there is a bit of a chop – or more – on the water. The video Candela posted on its Facebook page is pretty impressive. It shows the boat on April 6 in with the comment: From last week’s storm over Stockholm. Rough weather sea trials and benchmarking the Candela 7: Production After some improvements, tweaks, and proof of the refinements, the company started production for customers in the autumn of 2018. At the time, Hasselskog told Swedish tech site NYTeknik website, "It feels exciting and a bit scary to be up and running! But we believe in this technology and believe that it will fit properly as soon as we get our boats out into the market." The big reveal of the boat was at Sweden’s first all-electric boat show in Stockholm, where a full speedboat unexpectedly rising out of the water caused enough of a stir to be featured on Swedish national TV news. Three of the SI model boats have now been completed. In addition to all of this progress, the company was also added to Sweden's  33 List of the country’s most exciting tech start-ups. Others that have been similarly honored in the past include Spotify and Minecraft. Recommended:  Solar And Wind Power Makes The Current Sail Cargo Ship Electric Boats: No Traditional Boat Building The achievement is a recognition that creating a flying watercraft like the Candela S1 is not your traditional ‘boat building.’ There is a patent-pending system that controls the height, roll, and pitch of the hydrofoils, and innovation necessary because the flaps and ailerons that larger commercial hydrofoils use wouldn’t be robust enough for consumers. A mechanism was designed to retract the foils into a step in the hull (front) and the swim platform (aft) for shallow waters and storage. A flight controller captures the boat’s movements from 7 sensors and uses advanced sensor fusion algorithms to overcome the inherent instability of foils. Ultra-light hull materials are used, including a carbon fiber single skin in the hull, deck, hydrofoils, and interiors. Electric Flying Boat: Awards Winner Not surprisingly, all this impressive innovation has brought Candela some nice accolades and awards: nominated for European Powerboat of the Year, and winner of ‘Best for Future’ at the Best of Boat Awards and ‘Best Foiling Boat’ (it was the only electric model) at Foiling Week. The most excellent awards, though, might be found in the testimonials from first purchasers on the Candela website: "With six people aboard, we typically drive at close to full speed, 30 knots, and cover the stretch from Stockholm to our summer house in just over an hour. Even though we’re loading up the boat with passengers and gear, we always arrive with plenty of juice left in the battery pack." R ecommended: Hydrogen-Powered Energy Observer Reaches London: The Future Electric Boat The Candela: Specifications On their website, Candela says that hull and deck together weigh about 250kg / 500lb and that a similarly sized fiberglass could weigh six times as much. Lft. 7,70 m; b.max: 2.40 m Weight: 1300 kg draught: 0,4 (foil lifted)- 1,2 (foil immersed) m maximum speed: 30 knots more efficient speeds: 19-23 knots minimum foling speed: 17 knots range: 50 miles + 8 miles at 3 knots None of this comes cheap, of course. The price of a Candela S1 is £190,000 / US $210,000. But the cost doesn’t seem to be getting in the way of Gustav Hasselskog’s 2014 dreams. He says they already have about 150 advance orders. For more information go to candelalaspeedboat Before you go! Recommended:  Solar Powered Silent 55 Yacht Allows You To Cruise The World Did you find this an interesting article, or do you have a question or remark? Leave a comment below. We try to respond the same day. Like to write your article about electric boats? Click on  'Register'  or push the button 'Write An Article' on the  'HomePage.'
Stay Updated on Environmental Improvements And Global Innovations