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The Revolutionary Electric Catamarans Introduce Zero Emission Cruising

With greater awareness about pollution, sustainable and emission reduction practices have become increasingly salient in the maritime industry. The International Maritime Organization envisions a reduction in CO2 emissions by 40 percent by 2030 across international shipping to combat climate change.

The nautical sector has found a promising solution with the invention of electric catamarans. These vessels are powered by electrical energy, offering a more ecological, energy efficient, and environmentally friendly alternative to traditional cruising.

Making The Switch to Electric Catamarans

Electric catamarans are propelled by electric motors that draw power stored in lithium-ion batteries. These massive batteries are replenished by solar panels, wind turbines, hydrogenators, or a combination of all, allowing electric catamarans to ply oceans with an extended range.

Sunreef Yachts Eco remains at the forefront of eco-friendly responsible yachting with their electric sailing and power catamarans . The shipyard has made impressive strides in pursuing green energy generation for sailing the blue waters, including the installation of battery banks of the future and utilization of renewable energies.

What Makes Electric Catamarans Convenient?

1.  questing for unpolluted waters.

Did you know that one litre of oil is capable of polluting one million litres of water ? What is more is that catastrophic oil spills only account for five percent of the total water pollution, the rest of the major chunk is avowed against engine emissions, oil leaks, and refueling from waterborne vessels. This oil contains hydrocarbons and heavy metals that damage the aquatic environment and adversely affects human health.

To avoid contamination, eco-conscious yacht builders and manufacturers, like Sunreef Yachts Eco, have launched electric catamarans that are less likely to harm wildlife or water users. With electric catamarans, there are no risks associated with spilling fuel as they need not make their way to an oil pump for replenishing.

Apart from rising concerns of water pollution, the traditional marine outboard engines are also known to have detrimental effects on marine wildlife due to the noises generated. This noise impacts breeding cycles, hinders navigation of partially sighted animals, and prevents fishes from hearing their predators. As counterparts, electric engines boast quieter operations, thus minimizing adverse effects on wildlife and making the voyages more pleasurable for yachting enthusiasts.

2.  Greater Environmental Sustainability

An electric catamaran’s engine contributes significantly to a reduced carbon footprint that combats climate change effectively without releasing exorbitant levels of toxic pollutants, such as carbon monoxide, hydrocarbons, and nitrogen oxides, which deteriorate air quality.

3.  Energy Efficiency

Electric propulsion systems tend to be more energy efficient than the traditional internal combustion engines. This is because the extraction of fossil fuels from deep within the Earth, refinement, transportation via great distances, and distribution to oil pumps, accounts for a staggeringly high consumption of energy.

Additionally, the overall energy efficiency of a diesel engine is often capped at 40 percent; the rest of the 60 percent is lost in the name of heat and friction. On the other hand, electric catamarans can be charged directly from the grid, providing renewable electricity, to be more environmentally friendly. This accounts for lower operating costs overall.

Sunreef Yachts Eco employs the latest in yacht building technology to ensure efficient power distribution and hull form. The lightweight hull of our electric catamarans guarantees instant power with little to no drag, resulting in least possible wasted energy.

4.  Lower Maintenance Cost

Electric catamarans require relatively lesser maintenance as they boast fewer moving parts that use low friction magnetic field for operations and experience close to zero vibrations compared to internal combustion engines. They eliminate the need for winterization maintenance, oil changes, and filter, gaskets, or impeller replacements.

Alongside this, replacing greenhouse gas emitters, such as petrol and diesel, is certainly more economical. This also accounts for electric catamarans having a greater resale value on the market.

Understanding The Role of Marine Batteries 

The primary reason why consumers avoided plowing waters with electric catamarans back in the day was the limited range that made variable sea states hazardous. What made the situation worse was their slow charging abilities at limited marinas around the world.

However, the electric catamarans of today offer smooth and silent operations, excellent maneuverability, and emission-free functioning. Additionally, they have torque from the second their shaft is engaged, enabling them to accelerate faster than conventional internal combustion engines.

Sunreef Yachts Eco envisions a more carbon neutral future for its catamarans. But apart from reducing emissions, the shipyard is also determined to find ways to significantly improve performance, range, and comfort onboard.

The Batteries on Sunreef’s Electric Catamarans

Sunreef Yachts Eco fully electric catamarans are equipped with custom engineered marine battery banks that offer prolonged battery life and more power despite compact size and optimized weight. With a density below 5.2kgs per kWh, these lithium-ion battery packs are recognized as 30 percent lighter than standard battery systems used worldwide. The reduced weight of the battery accounts for lesser drag, which translates to reduced energy being consumed by propulsion.

Additionally, the battery size is also smaller, leaving more room in the hulls to expand on living space. The ability to charge the batteries of this electric catamaran in harbors across the world, regardless of the voltage, adds a unique level of versatility and convenience for cruising.

It is important to note that Sunreef Yachts Eco equips each model within its range with custom marine lithium battery banks, scaling between 400 to 700V with pack sizes extending up to 1MW. Their capacity allows for nearly two days of air conditioning and house appliances use. These are fast charging, long-lasting batteries with a lifespan of up to 10 years; but even after years of service, 80 percent of the original capacity is maintained.

The Utilization of Renewable Energy on Yachts

Energy regeneration onboard an electric catamaran allows them to have an unlimited range without relying on external fuel sources, making them fully self-sustaining. Installing a clean green energy production to the catamaran’s existing battery pack makes it far easier to run the essential electric components onboard.

Renewable energy produces no GHG (greenhouse gas) emissions despite powering the world’s growing fleet of electric catamarans. To protect the oceans, here are the three major renewable energy types that can be harnessed onboard an electric catamaran:

1.  Solar Power 

The utilization of solar energy on electric catamarans has proven to be a significant step in decreasing the consumption of environmentally damaging fossil fuels such as gasoline. Sunreef Yachts Eco has successfully produced its in-house engineered, patent pending technology, solar panels that can be fully integrated into the composite bodywork of the electric catamaran. The energy produced is stored in lithium-ion batteries.

These are the industry’s lightest solar panels, that can be mounted on the superstructure, hull, or mast, for maximum power generation. In general, multihulls offer a more stable platform for accommodating a large solar array in comparison to monohulls.

2.  Marine Wind Turbines

Marine wind turbines (also known as wind generators or wind chargers) are mounted atop catamarans to maximize the conversion of kinetic energy of air in motion to electricity. This in turn keeps the battery banks charged in the absence of solar power; hence playing a vital role in the energy mix of electric catamarans.

It is generally a stable source of power throughout the day, regardless of whether the vessel is docked or under navigation. That being the case, the more wind pressure the catamaran encounters, the more power the turbines produce. Overall, wind turbines significantly reduce operational costs by minimizing fuel consumption.

3.  Hydro Generation 

Hydro generation allows you to create power whilst sailing in an electric catamaran. Simply put, harvesting the momentum of waves converts kinetic energy into electrical energy, which can later be fed into batteries to supply electricity to the ship.

Sunreef Yachts Eco redesigned their sailing catamarans to draw power from the energy of waves rather than fossil fuels. Because regeneration can even come from the free spinning of propellers when the boat is under sail, it proves to be a viable method for procuring clean, green energy. Additionally, it has proven to be highly efficient on electric catamarans produced by the shipyard as the electric power can be recovered from two engines.

How Innovative is Sunreef Yachts Eco?

During recent years, the Polish shipyard , Sunreef Yachts Eco has grown increasingly aware of the urgency of protecting the environment. Our research and development team has launched ground-breaking inventions in the yachting industry with greener tech, efficient design, and cleaner manufacturing processes.

Air Conditioning

For starters, electric catamarans from Sunreef Yachts Eco are the only ones to boast an energy-saving, gas-based air conditioning system, providing notable energy efficiency for a sustainable yachting experience.

This system consumes 70 percent less energy than the standard air conditioning system. Not only is it capable of running on batteries throughout the night to guarantee a peaceful sleep onboard, but also provides top-notch humidity control in tropical regions.

Smart Water Management

Because freshwater generation is crucial for sustainable cruising, Sunreef Yachts Eco installs advanced water purification systems and highly efficient watermakers onboard electric catamarans. This guarantees unlimited access to clean water which reduces the need for plastic bottles onboard.

Another ongoing project by the research and development team at Sunreef Yachts Eco is the Zero Cat , a 90 feet catamaran with unique clean, green power generation capabilities.  This superyacht ’s fuel cell system will convert methanol to hydrogen onboard for zero-emissions cruising.

Sunreef Yachts Eco also aims to be the first shipyard to incorporate hydrogen on its electric catamarans as a substitute to conventional energy. Combining hydrogen power with electric propulsion would enable the 80 feet sailing catamaran to achieve unrivalled autonomy for eco-conscious cruising as it powers both onboard appliances and engines.

Future Plans

The idea encapsulated here is to continue making sailing more accessible for people around the world, but with minimal impact on seas and oceans. Sunreef Yachts Eco aims to commission 40 electric catamarans in 2024 that embrace latest propulsion technologies such as electric motors, advanced lithium-ion battery chemistries, and regeneration capabilities that rely heavily on renewable sources of energy to help protect the planet.

Frequently Asked Questions

Who makes electric catamarans.

Sunreef Yachts Eco is the world’s leading designer and manufacturer of electric catamarans, including both sailing and power multihulls. The shipyard is largely known for its production of bespoke luxury catamarans, stretching between 30 to 164 feet.

What is the range of the electric catamaran?

Sunreef Yachts Eco electric catamarans boast an unlimited range under favorable and sunny weather conditions. They are easily maneuvered, seaworthy vessels, with impeccable buoyancy even in rough seas. Featuring a mix of eco-energies, our electric catamarans also prove to be self-sustaining for extended periods of time.

Are there any electric powered catamarans?

In recent years, Sunreef Yachts Eco has launched several electric catamarans, powered by renewable energies for minimum ecological footprint. Furthermore, the shipyard has committed to 40 additional electric catamarans which will be launched in 2024, which includes multihulls from the newest range, the Sunreef ULTIMA .

EXPLORE OUR ELECTRIC CATAMARANS

Ultima range, previous post sunreef yachts and rosberg x racing renewed partnership, next post recharge at sea: solar catamarans harness sun-powered serenity.

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Revolutionary All Electric Perfomance Catamaran

This business has been Paused to Focus on our Marine Solar division. Please Visit Open Waters Solar

The most exciting performance-focused catamaran to hit the sailing world, the Open Waters 40 is an all-electric catamaran that leverages the latest in yacht construction technologies designed to maximize the thrill of sailing yet still provide the creature comforts of a multihull.

Great handling and speed

The ESC40 is a 40-ft catamaran designed to be two to three times faster than the typical cruising cat – using carbon fibre to reduce weight and provide increased hull strength.

The twin helm stations are covered by a solar cell-covered roof and come with a 59m2 main sail in addition to three headsails: Jib 26 m ² , FRO 65 m ² and Asail 121 m ² .

The hull is rated to handle boat speeds in excess of 20 knots. With curved retractable daggerboards providing better upwind handling and performance at speed.

The retractable rudders, together with the low draft of 2 ft, allow the boat to cruise in shallow waters and to be beached on the bow or stern.

Regenerative Energy

Thanks to the low weight, higher boat speed and the solar/hydro regeneration systems on-board. The boat is a 100% energy self-sufficient.

The twin electric drives and advanced battery technology allows for quiet, fossil fuel-free cruising.

Using 10 kW motors, the close-quarter power and handling is unrivalled. The folding propeller generates electricity while sailing together with the  roof-mounted solar cells , recharging the battery while in operation.

The integrated drives, battery and battery management systems are intelligently inter-connected and provide real-time and predictive insights on power consumption, generation and operational range.

The boat comfortably accommodates four adults and two children, and is sure to bring you all modern comforts such as a 400L water reserve shower and an electric stove.

The hull interior boasts 6’4” of head room with the coach offering even more generous space with 6’8” of head room up to 7 at the aft dinette. The wet deck, spacious with 300 ft ² between hulls features the main stateroom.

Each hull features three deck hatches and six portlights for excellent ventilation while the trampoline across the beam is 305 ft ² of play, relaxation and dolphin viewing.

Our unique construction techniques allows us to manufacture the boat in Canada in a quarter of the time compared to traditional boat building.

We can also build and ship your boat in as early as four months, greatly surpassing the industry standard of 12+ months.

From order to build and delivery, our price compares very favourable to other fast cats.

Faster, cheaper delivery

The boat can be packed in a standard 40ft freight container and be shipped safely anywhere in the world at a much lower cost (up to $50,000 savings) and in a fraction of the time.

Boat owners can now also ship their boat one or both ways between North America, the South Pacific, Mediterranean or the Carribean for a one way cruise or an overwintering.

Vacuum Resin Infusion

Vacuum resin infusion is the process at the heart of our technology and is used for all parts.

The vacuum resin process removes all of the air between the fibres of a part prior to the introduction of the resin.

After the process, our parts are meticulously sanded with variable grit — allowing for maximum paint adhesion on surfaces and smooth, stylish edges.

Core Materials

Core materials are introduced into the part to increase stiffness without increasing weight.

The core is a structural-grade foam with a high shear strength characteristic: if the part is of a complex shape, we cut the foam into sections, thermoforming it to the required shape.

We use five different sizes and densities of foam on the boat, optimized for local strength requirements.

We purchase carbon fiber by the roll and over 35 rolls are used in each boat. We have engineered the laminate schedule to be most efficient in the various areas of the boat maximising strength and reducing weight.

Each meant to be the most efficient for their respective areas. The fabrics are stitched, instead of weaved.

Stitched fabrics do not need to bend over or under other fibre and lay flat, making a stronger part.

At Open Waters, it is our mission to make catamaran cruising more exciting and environmentally sustainable. We’ve set out to create a performance cruising catamaran that will be a joy to sail and that will raise the bar in environmental sustainability.

We have developed a unique  design and manufacturing process, selected high performance  materials that enable us to build a boat that uses less materials and is 50% lighter. As a result it is a lot faster and as a result it is able to generate and store the energy needed to propel it electrically for hours and provide enough energy for on board equipment.

We use high performance carbon fibre and a vacuum infusion process to maximize strength and reduce the use of resin and eliminate resin vapour emissions. We use 100% recycled PET foam core wherever possible and we see the opportunity for incremental use of bio-based epoxy and natural fibres in our future.

As we continue to develop our sustainability roadmap for our boats we will perform a full lifecycle analysis to identify other opportunities to minimize our carbon footprint. 

The unique processes and skills we have developed can be applied and licensed to other marine and recreational vehicles businesses.

Simon Angus

Simon Angus P.Eng is a professional mechanical engineer with a background in project management and a passion for sailing.

He spent his university summers travelling around Europe searching for the best combination of wind and waves in addition to teaching both sailing and windsurfing.

After moving to Canada in 2004, Simon bought a Catalina 27 in Kitimat, BC, and enjoyed sailing in the Douglas Channel with his young family. A career move to Alberta paused his sailing career until he discovered the joys of chartering sailboats in the Caribbean.

Following a 20-year career in industrial engineering and project management, Simon decided to make a change. He combined his passion and profession to launch Open Waters Design and Manufacturing in 2016.

He designed and manufactured an 18ft canoe, developing a plug and mold using his proprietary vacuum resin infusion process. After the successful build of the canoe, Simon went on to build a high-performance 18ft A-class foiling sailing catamaran out of carbon fibre, refining both the mold construction and the vacuum resin infusion process.

After researching the various build steps, Simon began with CNC shaping of a plug, hand-finishing, and building the hull molds. He also built the mast, Z foils, and Tee foil rudders. Following successful trials in Vancouver, BC, Simon embarked on his next ambitious project: designing and building the boat he had dreamt about for years.

A boat that could be shipped anywhere in the world, sailed on with his family, and returned to Vancouver for summer cruising — and would be electrically sustainable.

In 2019, Simon was introduced to Hal Whitacre, sparking a design partnership that culminated in the creation of the Open Waters ESC40. Since then Simon Angus has started Open Waters Solar . A marine solar company revolutionizing the marine world.

Hal Whitacre

Hal Whitacre, owner of Whitacre yacht design since 1984 and is responsible for some of the fastest and most luxurious boats ever built.

Hal is Open Waters Chief Naval Architect and has worked closely with Simon over the past 2 years to produce the detailed designs that make up the Open Waters ESC 40.

Hal has a distinguished career in Naval Architecture graduating from the University of Michigan with a degree in Naval architecture and Marine Engineering.

Throughout his career he has pushed the boundaries of naval architecture notably designing the Open Class 60 “Imagine”; breaking ground with the largest rig ever put on an Open 60.

Hal also owns and operates Bruce Roberts USA and in that capacity, he has designed over 100 steel and aluminium boat kits in addition to many fiberglass and  wood sail and power boats. Most recently, Hal was the chief Naval Architect for Gunboat Catamarans when they were built in the USA.

Since their move to Europe, Hal has completed 2 gunboat 55’s along with a conversation of a gunboat 55 to a powercat ferry which has recently conducted successful sea trials.

Hal and his wife Tammy split their time between Annapolis, Md and Sister Bay, Wi.  Hal continues to race Lasers during the winter and windsurfs/foilsurfs as much as possible.

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Electric Sailboat Motor: Range, Cost, Best Kits for Conversion

Today, owning a completely green sailboat has been made possible with electric sailboat motors.

Imagine cruising with the silence of an electric sailboat motor and the ease of use with a simple press on the start button. What’s better is there are no exhaust fumes at all with significantly less maintenance.

It’s so appealing that a lot of sailing liveaboards have made their electric sailboat motor conversion.

However, some sailors are still on the fence, worrying about the range and price of the electric sailboat motor.

If you are one of them, you are in the right place!

This post will guide you through every aspect you need to know about electric sailboat motors to help you make an informed decision.

Besides, you will get professional insights on how to make the electric sailboat motor conversion for your own boat and learn the best electric sailboat motors (with honest reviews).

Table of contents:

• Electric Sailboat Motors: Confusion Explained

Electric Sailboat Motor or Combustion Motor

• Electric Yacht Motor Conversion: Two Solutions
• How to Size an Electric Sailboat Motor

Best Electric Sailboat Motors (with Reviews)

Electric Sailboat Motor: Confusion Explained

Can you go cruising with an electric sailboat motor? Can you put an electric motor on a sailboat? Are there any limitations?

Whether electric sailboat motors are a good fit for your boat is not a YES or NO question. Here we will explain your top worries with statistics and facts. That way, you can make a wise decision according to your situation.

You may hear some complaints about the batteries and range of the electric propulsion.

However, their experience may not suit electric sailboat motors.

In fact, even small electric engines work pretty well in many sailboats. That’s because most of the time, the wind can power the boat, and the motor is just used for docking or in rare times when there is no wind.

Therefore, it makes more sense to learn electric sailboat motor performance in real-world applications.

Here is a test report of a 3 HP electric sailboat motor on an RS21 racing sailboat:

As you can see, the small electric sailboat motor can run at 5.5 mph top speed for one hour continuously.

And there is a big difference in terms of range vs speed for electric sailboat motors:

If you lower the speed, the range and runtime can be greatly extended. The slower you go, the further you’ll get. For example, if you cut your speed in half, the electric sailboat motor can last 7 hours and go 20 miles within one charge.

That’s pretty sufficient if you use the electric yacht motor mostly for docking or as an auxiliary engine.

Faster top speed (and more range) is available with higher power electric sailboat motors depending on your specific requirements. Contact a specialist to design your electric sailboat motor solutions.

Also, don’t forget to get the electric sailboat motor with regeneration (See recommendations below).

That’s to say, when there is a lot of wind and you’re moving rapidly via your sails, they regenerate and store electric power on the batteries to keep you moving at other times. Solar recharging is also a plus.

Essentially, the range depends on how many batteries you have, so it’s not a limitation of electric sailboat motors but energy and batteries.

If you are still worried, you can offset this by getting a diesel generator, which is more efficient than a diesel engine. And it is a range extender when you need it, but for 90% of your motoring that you don’t need the range, you can rely on the electric sailboat motor.

Some of you might be concerned about the extra weight of the batteries.

In fact, an electric sailboat motor with lithium batteries weighs less than a diesel engine, particularly if you include the fuel weight.

If you want a lightweight electric sailboat motor solution, make sure you get one with LiFePO4 batteries . Compared with other marine batteries, they are more compact in design with much less weight and higher energy density.

Some more advanced electric motors for small sailboats (such as Spirit 1.0 Evo) feature an integrated lightweight battery. So you don’t need to worry about the complex wiring to hook it up or extra space to store the battery.

This is a huge plus if you want to use the electric sailboat motor on a tender or dinghy.

Here is also a chart that collects the weight of some popular electric sailboat motors for your reference:

For many people, another big problem with electric sailboat motors is the cost.

It’s true that a gasoline outboard with similar power is a lot cheaper to buy. However, the electric sailboat motor eventually wins in long-term operating cost. That’s especially the case if you are going to do a lot of motoring.

Electric sailboat motors save on fuel and maintenance costs, which can build up to a large amount over time.

Here is a chart that compares the cost of a 3HP electric sailboat motor (coming with a built-in battery) with its combustion counterpart:

That’s to say, you will cover the price difference for electric yacht motors eventually as long as you use it long enough. Click to check the details of the calculation .

What makes the electric sailboat motor even more worthwhile is it saves you a lot of hassles, especially for sailors who only use the engine in and out of the harbor. Dealing with the maintenance of the gas outboard for a 10 minute motor out of and into the harbor is disproportionate and painful.

*The higher horsepower electric sailboat motor may be different in terms of the cost calculation. Check out the outboard motor pricelist by HP for more information.

As you may have already noticed, electric propulsion has already been widely used in the marine industry:

It’s quiet while motoring, clean to handle, environmentally friendly, with less maintenance and operation costs.

The electric sailboat motors are easier to use with dramatically fewer moving parts to break and no worries about being a diesel mechanic to deal with the hard pulling start. You can have it always on, so it is ready whenever you need it.

And it makes even more sense in sailing applications:

You don’t really need to motor much if your plan is to actually sail. If you are completely becalmed, you will probably just need to motor at 2 knots to keep making way, which is easy for electric sailboat motors.

If you mostly use the motor to get into and out of the harbor, the electric sailboat motor also works great for you.

You can always charge up at the dock, motor out of the marina (or even motor to your sailing area or race start), then hoist the sails and when you’re through, the batteries are charged again.

The electric sailboat motor is also useful as a backup (kicker) motor in case your system goes down. That’s why you can see people pushing a lot of big boats with small electric motors. (Click to learn more information about kicker motors .)

Personally, it’s really nice to have an electric auxiliary in the boat – no smelly, messy diesel and motor oil to deal with, a much simpler system with less maintenance, and much, much quieter operation.

However, powerboats tend to have much higher requirements in terms of both power output and runtime. In that case, an electric sailboat motor can be hard to satisfy your needs.

How Do You Size an Electric Motor for a Sailboat?

As a rule of thumb, you will need approximately 1 HP per 550 lb of the displacement of your boat.

Generally speaking, a 3 HP electric sailboat motor can push a sailboat up to 25 ft and a 9.9 HP motor is sufficient for a 30 ft sailboat to motor at a satisfying speed.

However, bear in mind the horsepower you need always depends on your needs and applications.

It’s better to check the data from real-world tests to decide whether the electric sailboat motor is suitable for your specific needs.

For example, the 9.9 HP electric sailboat motor Navy 6.0 allows you to go at 6.9 mph (11.1 kph) on a 30 ft sailboat, and the range can be extended to 46.4 miles if you decrease your speed to 2.9 mph (4.6 kph).

Click to see more test reports with other electric motor and sailboat combinations, and find the electric sailboat motor that suits you best.

If you are still not sure about the size of the electric sailboat motor for you, feel free to leave us a comment and we will get back to you ASAP with professional suggestions.

Electric Sailboat Motor Conversion

Basically, there are two ways for you to convert your sailboat to a clean and quiet electric drive system:

You can either convert your current vessel to electric or buy an engineless yacht and install an electric sailboat motor on your own.

#1. Repower Your Sailboat with Electric Motor

If you decide to replace the diesel engine with an electric motor, you will need to do a lot of preparations:

The DIY approach requires an electric sailboat motor kit (including motor and controller), batteries, a good level of mechanical ability and basic electrical knowledge, as well as some common tools such as a voltmeter.

You will need to take the old engine out for the new electric sailboat motor installation. It’s not an easy task that involves removing the engine mounts and the drive shaft (dealing with the numerous hoses and cables), taking out the engine, exhaust system, fuel tank, and its attendant tubes, etc.

Remember to balance the boat to avoid listing during the electric sailboat motor conversion.

Then in with the new electric sailboat motor. The installation process can be straightforward if you choose the electric sailboat motor kit wisely (See steps below). Furthermore, you can set up solar charging for your electric sailboat motor with solar panels and charger.

Many sailors have recorded their electric sailboat motor conversion process and experience. Be sure to check them out to get some inspiration. For example, Ed Phillips has documented everything which can serve as a guide for newbies to get started.

Mind you there can be a whole heap that can go wrong in designing and maintaining the electric sailboat motor systems. You really need to be totally on top of it if you want decent performance or reliability.

If you are not that technically inclined, it’s better to talk to a specialist first to discuss your plan for a smooth electric sailboat motor conversion.

#2. Install an Electric Motor in a Sailboat

If you own an enginless sailboat, the electric sailboat motor conversion is much easier for you.

All you need to do is to find a reliable electric sailboat motor and install it in simple steps. The whole process can be easily done, even for beginners. Here we take the popular 6 HP electric sailboat motor Navy 3.0 as an example to show you the installation process:

• Step 1 : Rotate the clamps or use the screws to fix the outboard onto the sailboat.
• Step 2: Mount the steering system in the proper position.
• Step 3: Install the tiller on the electric sailboat motor.
• Step 4: Connect the batteries to the electric sailboat motor system.

Click to check the video tutorial that guides you through each step of the installation.

If you are worried about aesthetic issues and want higher horsepower options, an electric inboard motor can be a better suit for your sailboat. If you prefer an inboard motor for your sailboat, contact our OEM team to get an electric propulsion solution tailored to your needs.

Note : You might find some electric trolling motors rated by #s of thrust on the market. Actually, those electric trolling motors for sailboats can only provide limited speed and range. If you are heading into the wind, the trolling motors for sailboats are definitely not an ideal solution.

Once you’ve evaluated if electric sailboat motors are right for you, there are a lot of options for electric systems.

Here are some popular electric sailboat motors with positive reviews from customers worldwide. Fast charger is available for all the models recommended to reduce your charging stress.

#1. 3 HP Spirit 1.0 Evo

If you are looking for an electric motor for a small sailboat, be sure to check out the ePropulsion Spirit 1.0 Evo. It’s suitable for large daysailers or small cruising sailboats under 25 ft.

With the Spirit 1.0 Evo electric sailboat motor, you can go 5.5 mph (8.8 kph) at top speed on the 21 ft RS21 sailing boat, or troll for 20 hours continuously at 2.2 mph (3.5 kph) according to our test .

This electric sailboat motor with regeneration allows you to recover energy from the prop while under sail. It will start to generate power automatically when the sailing speed reaches 2 knots.

As an electric auxiliary sailboat motor, it can also be easily installed on your tender boats or yacht dinghies since it’s portable and easy to transport (with a lightweight integrated battery).

Features You Will Love:

• Come with the industry-first hydrogeneration capability
• Direct-drive technology makes it maintenance-free
• Portable with a 1276Wh large integrated lithium battery for long range
• Safety wristband keeps you safe in case of MOB
• Digital operation keeps you informed of the battery status

Spirit 1.0 Evo Electric Sailboat Motor Reviews:

“Great weekend with my 17′ sailboat powered by the Spirit Evo. This is great. Quiet and reliable. Went at 3/4 throttle for about 1.5hrs when taking it back to boat ramp.” – Robert Taylor

“Very happy with our Spirit Plus. Pushing our Kolibri 560 a 750 Kg sailboat, with ease. Doing about 5.8 km/h at 500W.” – Frank van Asten

#2. 6HP/9.9 HP Navy Evo Series

If you want a little more juice on the electric sailboat motor, check out the ePropulsion Navy Series. It offers 6 HP and 9.9 HP models for your selection and it provides sufficient power for sailboats up to 30 ft.

According to our test , the 6 HP electric motor Navy 3.0 can push the Catalina 25 sailboat (25 ft) at 6 mph (9.6 kph) top speed, while the Olga 33 sailboat (33 ft) can go at 7.5 mph (12 kph) with the 9.9 HP Navy 6.0 motor.

The Navy series electric sailboat motor also comes with regeneration features which can be recharged with hydrogeneration, wind turbine, and solar panel.

• Four controls to fit your sailboat installation and your boating style
• Accompany LiFePO4 batteries (need separate purchase) are more energy efficient
• Digital display offers real-time monitoring of the power and battery
• Magnetic kill switch and safety wristband keep you safe on the boat
• Electric start saves you trouble pulling the cord to start

Navy Series Electric Sailboat Motor Reviews:

“I have a Navy 3.0 with E80 on a Catalina 25 sailboat. It is working well. Currently I am using about 4% battery to go in/out of the marina by boat.” – Aaron Young

“Just finished my 8 weeks sailing journey in the Baltic Sea. The two Navy 3 outboards provide enough power for my 33ft catamaran. The 400W solar panels provided enough energy for engines and all other energy consumed on board with 2-6 persons. The two Navy Batteries provide power for engines and all other on-board electric devices. I never had to use shore power, so totally self-sufficient electric system.” – Martin Hildebrand

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Propulsion Systems for Monohull

The silence of an Oceanvolt electric propulsion is a skipper's dream.  Whether quietly maneuvering through a harbor or motor-sailing on low-wind days to create your own apparent wind, our electric solutions will enhance and extend your sailing enjoyment. 

Oceanvolt offers Hybrid or Electric systems as a power & propulsion option in partnership with many leading monohull boat builders - adding new partners continuously. We also offer repowering solutions for converting away from legacy diesel engines – removing the diesel engine, fuel tanks and exhaust system - cleaning up greasy, smelly engine compartments and freeing up both weight and space below deck.

Oceanvolt systems are scaled and configured to achieve maximum efficiency - taking into consideration boat length, beam and displacement as well as system weight and placement within the boat.  Range, beyond battery capacity, is extended through hydro generation while sailing above 6kn.  This can be complemented with either a portable AC generator or a DC generator (in larger boats or for long distance cruising).

All Oceanvolt systems are engineered to operate at 48 volts for passenger safety and ease of repair. Oceanvolt systems are extremely low maintenance and do not require winterizing (no annual engine maintenance/storage costs).

system & price examples

Owner testimonials.

Electric Beneteau Oceanis 40.1 “Moritz”

Maxi Dolphin MD55

RM Yachts RM 1180

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GREEN PROPULSION FOR ELECTRIC CATAMARANS

Electric engines.

Enter a world of vibration and fume-free navigation. Sunreef Yachts’ eco-friendly electric catamarans feature advanced electric engines offering the best of autonomy and performance for a responsible yachting experience. Thanks to innovative green propulsion solutions, the shipyard’s eco-friendly catamarans combine fuel savings, low-maintenance, and ultra-silent operation.

Electric propulsion not only is the green choice for conscious yachting but also brings more freedom, peace of mind and luxury on board.

Hybrid Engines

Sunreef Yachts electric catamarans have the option to be equipped with ultramodern hybrid propulsion systems as well. Besides significantly reduced CO2 emissions, hybrid engines take eco cruising to the next level by combining the best of electric motoring with the advantages of thermal engines. Hybrid engines not only offer reliable propulsion but can also be used to recharge the yacht’s battery bank for even more energy-efficiency.

Eco-friendly hybrid catamarans by Sunreef Yachts are a guarantee of solid performance, low-maintenance, and Atlantic-range.

Relying on wind as an essential source of propulsion is the most natural way to think about yachting. Sunreef Yachts’ sailing range of electric catamarans offer top quality rigging and fully recyclable performance sails. Wind can also be a precious support when it comes to motor yacht propulsion. The shipyard’s range of power eco-friendly yachts can be fitted with high-performance kites to combine the advantages of eco motoring with wind propulsion. Frequently used for towing large container ships, kites are an extremely powerful support for leisure crafts.

Sunreef Yachts’ motor yachts equipped with kites enjoy oceanic range, massive fuel savings, more visibility and safety.

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Renewable energy on yachts, energy efficiency on yachts, sustainable finishing materials, see our range.

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Sunreef Yachts Shipyard

ul. Tarcice 6

80-718 Gdańsk, Poland

+48 58 769 77 77

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ELECTRIC HYBRID DRIVE SYSTEM For silent ecological sailing

Windelo catamarans travel silently even when under power, thanks to their electric hybrid drive system . Enjoy the sound of the waves and wind while not disturbing the wildlife as you set sail from your dream anchorage to a new destination. With our electric catamarans , no more exhaust fumes and vibrations – sailing is now a really pleasurable clean, environmentally-friendly experience .

The Windelo catamarans are fitted with two 20kW electric motors from Bellemarine . With an electric propulsion, there’s no need to warm up the electric motor. You have full power from the moment you switch it on.

Motor: A reliable high-performance electric hybrid drive system

Electric motor with a good cruising range.

• At 6 knots, the Windelo 50 has a range of nearly 4 hours and roughly 22.7nm per day with an 1120Ah battery bank.
• At 7 knots, the Windelo 50 has a range of nearly 2 hours and 17 minutes and roughly 15.47nm per day with an 1120Ah battery bank.

When the energy consumed is not compensated by renewable energies , the 18kW backup 500L diesel generator(s) start(s) up to supply the electric motors and recharge the batteries . The generator is in the aft engine bays and communicates with the Boat Management System . It starts up automatically when the batteries are low and/or when the power required is greater than the power the batteries can supply. So, the full cruising range of our catamarans on the motor is 1100 nautical miles . The generator can also be started manually by the skipper in 2 different modes:

• Cruising range mode : for example, the skipper wishes to start his generator to increase his cruising range when there is no wind.
• Recharge mode : the skipper starts his generator, which automatically switches off when the batteries are fully charged.

SALES MANAGER

Windelo is a new conception brand of innovative catamarans. Ecology is at the heart of the company with the ambition to significantly reduce the environmental impact of our boats. A range of 44 to 60 foot catamarans offering sailors the opportunity to sail with pleasure and safety on eco-friendly boats.

In full development, we are hiring a sales manager:

JOB AND MISSIONS: Managed by the director of the company, and in connection with our various services and partners, you are a key player in the launch of this new brand.

Real project manager: 1. You co-build the Windelo sales and services office, 2. You recruit, train, and drive progressively a team of passionate experts, 3. You develop and innovate in the strategy of selling Windelo boats in Europe, 4. You recruit and lead a global network of sales partners, 5. You co-build and animate the company’s service strategy: port mapping places; insurance and financing; training; owner’s manual etc.

YOUR PROFIL 1. Passionate about sailing, you practice regularly, 2. Your sense of service and customer leads you to satisfy your customers every day, 3. You are enthusiastic and motivated to work in a start-up, 4. You have 2 to 5 years’ experience in the sale of boats, 5. Bilingual French – English, you also speak a third language: German, Italian, or Spanish.

EVOLUTIVE JOB Director of sales

AVAILABILITY / PLACE OF WORK 1st Quarter 2019 / Occitanie Region, Canet en Roussillon FRANCE

TYPE OF CONTRACT AND REMUNERATION Permanent contract / fixed to be defined according to experience + variable.

If you are a passionate of sailing and this challenge to participate in the development of a company in full creation arouses your enthusiasm, welcome to send your application by e-mail to:  contact@windelo-catamaran.com

RESPONSABLE DES VENTES

Windelo consiste en la création d’une nouvelle marque de catamarans innovants. L’écologie est au coeur de l’entreprise avec pour ambition de réduire fortement l’impact environnemental de nos bateaux. Une gamme de catamarans de 44 à 60 pieds offrant aux marins la possibilité de naviguer avec plaisir et sécurité sur des bateaux éco responsables.

En plein développement, nous recrutons un(e) responsable des ventes

POSTE ET MISSIONS

Managé(e) par le directeur de l’entreprise, et en lien avec nos différents services et partenaires, vous êtes un acteur clefs du lancement de cette nouvelle marque. Véritable chef de projet :

1. Vous co-construisez le bureau des ventes et des services de Windelo, 2. Vous recrutez, formez, et animez progressivement une équipe d’experts passionnés, 3. Vous développez et innovez dans la stratégie de vente des bateaux Windelo en Europe, 4. Vous recrutez et animez un réseau mondial de partenaires de vente, 5. Vous co-construisez et animez la stratégie de service de l’entreprise : mapping des places de port ; assurance et financement ; formation ; entretien ; manuel du propriétaire etc.

VOTRE PROFIL 1. Passionné(e) de nautisme, vous naviguez régulièrement, 2. Votre sens du service et du client vous anime pour satisfaire vos clients au quotidien, 3. Vous êtes enthousiaste et motivé(e) à l’idée de travailler en équipe dans une « start-up », 4. Vous disposez de 2 à 5 ans d’expérience dans la vente de bateaux de plaisance, 5. Bilingue français – anglais, vous maitrisez également une troisième langue : allemand, italien, ou espagnol.

POSTE EVOLUTIF Directeur des ventes

DISPONIBILITÉ / LIEU DE TRAVAIL 1ier Trimestre 2019 / Région Occitanie, Canet en Roussillon FRANCE

TYPE DE CONTRAT ET REMUNERATION CDI Cadre / Fixe à définir selon expérience + variable.

Si vous êtes un(e) passionné(e) de l’univers du nautisme et que ce challenge de participer au développement d’une entreprise en pleine création suscite votre enthousiasme, merci d’adresser votre candidature par e-mail à : contact@windelo-catamaran.com

As part of the creation of new types of catamaran made in Occitanie, an audacious choice of ecological innovation has been selected in partnership with the Materials Center of « Mines d’Alès » (C2MA – IMT MINES ALES) (Gard, France). It’s a question of combining ecological performance in terms of minimizing the environmental footprint and structural resistance, and this, in a global approach of circular economy on all parts of the boat. To do this, and in connection with the IMT MINES ALES, Windelo has relied on the use of secondary raw materials, competitive  virgin petroleum-based materials, that fully comply with the specifications in terms of mechanical performance. This is a real first step to the development of a 2.0 fleet ships fully integrated into the challenges and ecological challenges of the 21st century.

Associated with an ecological approach of circular economy integrating a not insignificant part of competitive secondary raw materials from virgin materials, the architectural design and the resistance of materials on the new Windelo catamarans are mechanically tested in the Materials Center of « Mines d’Alès » (C2MA – IMT MINES ALES) (Gard, France) in connection with the architects and designers of the project. The design of the ship, and in particular the hulls and bows, go through a search for efficient structuring and arranging of materials composing it, combined with a mechanically optimized geometrical assembly. To this end, specific test developments, such as the study of distortion of the structure and of the panels constituating the hull of the ship, are studied by digital image correlation techniques coupled with standardized strength tests.

Founder of Catana

“The cruising program for this new boat raises the question of the antagonism between the search for performance under sail and the pleasure of navigation, and the development of pleasant living spaces. The originality of the answer is provided here in the arrangement of the cockpit bringing together the helm and maneuvers to the center of the boat and in the arrangement of living space that occupies the rear of the nacelle.

Just behind the mast the outer cockpit offers two helm stations protected from the wind and spray, a beautiful view of the sails and bows, and allows to have all the maneuvers on hand while limiting the needs to circulate on the bridge. Out of navigation, the cockpit can be more widely protected from the outside and open to the rear space.

Fully opened behind this cockpit, we have not developed two living spaces duplicating one inside the other but a single large space which is ajustable. We have focused our efforts on the geometry of the material and visual limits of this space and on the opening kinematics of the bays. Once opened, they “disappear” to transform the interior into an exterior. The generosity of these openings also allows to modulate the ventilation of this space by playing on a wide range of opening on its four sides

This work on the modularity and the disappearance of limits is found at the extreme rear of the nacelle, with an articulated platform to the davits transforming it into a floor when anchored, and in the rear cabins, whose wide turning porthole eliminates the angle between side plating and back side. The cabin space is therefore generous despite the relative narrowness of the hulls.

All these choices allow us to combine a contained hold of the nacelle, pledge control of the weight estimate, to a generous living space, with a central part given to navigation and maneuvering. The slenderness of the forward spikes, the significant free height under the platform, and the attention paid to the centering of the masses, complete the marine qualities expected for an offshore navigation program.

The other originality of the project brought by this new construction site is in the approach of “eco-design” on materials and construction. Strongly limiting the use of molds, the latter brings a greater margin of freedom in the variations and evolutions of the boats thus conceived. ”

Christophe Barreau et Frédéric Neuman

Architects and Naval Engineers

Who could know if it is the father or the son who is the most  passionate? It doesn’t matter. The important thing  is to write an innovative project within a family culture, for today and for generations to come. Hand over the guiding light, this is Olivier Kauffmann’s will. “At first I wanted to make my own boat, for me and my family; go on trip around the world living on a  efficient and pleasant catamaran. I dreamed of a new quality of space. Today, the dream has matured, and I want to share it with the great family of sailors. »

Windelo is the desire to expose us to something new, innovative, powerful, bigger than oneself. To seek innovations on materials, techniques of industrialization and uses to impulse a new economic reality. “We want to be part of this transformation related to the respect of our environment, it is for us, essential to work in this respect of men and nature. Men are at the heart of the project with the desire to recruit and form a passionate team, surrounded by experts recognized as the best in their field.

And the innovation doesn’t stop here, because the constructive process makes it possible to envisage fast evolutions from one boat to another while remaining well priced. An ambitious and respectful project ; Welcome to the Windelo adventure.

Dans le cadre de la confection de nouveaux types de catamaran made in Occitanie, un choix audacieux d’innovation écologique a été retenu en partenariat avec le Centre des Matériaux des Mines d’Alès (C2MA – IMT MINES ALES) (Gard). Il s’agit à la fois d’allier performance écologique en termes de minimisation de l’empreinte environnementale et résistance des structures, et ce, dans une démarche globale d’économie circulaire sur l’ensemble des parties du bateau. Pour ce faire, et en lien avec l’IMT MINES ALES, Windelo a misé sur l’utilisation de matières premières secondaires, compétitives des matériaux pétrosourcés vierges, et parfaitement conformes au cahier des charges sur le plan des performances mécaniques. C’est un réel premier pas vers l’élaboration d’une flotte de navires 2.0 s’intégrant complètement dans les enjeux et défis écologiques du XXIème siècle.

Associées à une démarche écologique d’économie circulaire intégrant une part non négligeable de matières premières secondaires concurrentielles des matières vierges, l’architecture de conception et la résistance des matériaux des nouveaux catamarans de Windelo sont éprouvées par des tests mécaniques réalisés au Centre des Matériaux des Mines d’Alès (C2MA – IMT MINES ALES) (Gard) en lien avec les architectes et designers du projet. La conception du navire, et en particulier les bordées et étraves, passe par une recherche de structuration performante de l’agencement des matériaux le composant, combinée à une géométrie d’assemblage optimisée sur le plan mécanique. Pour ce faire, des développements d’essais spécifiques, comme l’étude de la déformation de la structure des panneaux constituant la coque du navire, sont étudiés par des techniques de corrélation d’image numériques couplés à des essais de résistance mécanique normalisés.

La rencontre avec Olivier et Gautier a été une agréable surprise pour moi, dès l’exposé de leur projet, j’ai vu réunis tous les ingrédients d’une réussite, l’expérience de gestion d’entreprises mais avec une modestie rassurante, le souci de former une équipe des meilleurs experts (sourire) et une réelle écoute de leurs avis. Au fil des rencontres, les discussions ont ravivé mes souvenirs de la création puis du développement de Catana. Les mêmes motivations, la même recherche de perfection, la même audace teintée de modestie que nous avions au départ du projet. Windelo est centrée sur le produit ; une ligne de catamarans performants construits avec les techniques les plus modernes. Je n’en avais pas conscience à l’époque mais je crois que le succès d’un bon bateau vient de cette passion pour la mer avec la volonté de marier confort sécurité et performance. Je retrouve ici cette passion, et aujourd’hui ce qui a fini de me conquérir c’est le souci de préservation de la nature, tant dans les matériaux choisis que dans les méthodes de production.

Le programme de grande croisière auquel se destine ce nouveau bateau pose la question de l’antagonisme entre d’une part la recherche de performances sous voiles et du plaisir de navigation, et d’autre part l’aménagement d’espaces de vie agréables et généreux. L’originalité de la réponse apportée ici réside dans la disposition du cockpit rassemblant poste de barre et manœuvres au centre du bateau et dans le traitement de l’espace de vie qui occupe l’arrière de la nacelle. Juste en arrière du mât le cockpit extérieur offre deux postes de barre protégés du vent et des embruns, une belle vue sur les voiles et sur les étraves, et permet d’avoir l’ensemble des manœuvres à portée de main tout en limitant les besoins de circuler sur le pont. Hors navigation, le cockpit peut être plus largement protégé de l’extérieur et s’ouvrir sur l’espace arrière. De plein pied en arrière de ce cockpit, nous n’avons pas aménagé deux espaces de vie dupliqués l’un à l’intérieur et l’autre à l’extérieur mais un seul grand espace dont le degré d’ouverture est très largement modulable. Nous avons porté notre effort sur la géométrie des limites matérielles et visuelles de cet espace et sur les cinématiques d’ouverture des baies. Une fois ouvertes elles « disparaissent » pour transformer l’intérieur en extérieur. La générosité des ouvrants permet également de moduler la ventilation de cet espace en jouant sur une large gamme d’ouverture sur ses quatre côtés Ce travail sur la modularité et sur la disparition des limites se retrouve à l’extrême arrière de la nacelle, avec une plateforme articulée aux bossoirs se transformant en plancher au mouillage, et dans les cabines arrières dont le large hublot tournant fait « sauter » l’angle entre bordé latéral et face arrière. L’espace de cabine est donc généreux malgré la relative étroitesse des coques. L’ensemble de ces choix nous permet de conjuguer une emprise contenue de la nacelle, gage de maîtrise du devis de poids, à un espace à vivre généreux, avec une place centrale accordée à la navigation et aux manœuvres. L’élancement des pointes avant, l’importante hauteur libre sous nacelle, et l’attention portée au centrage des masses, complètent les qualités marines attendues pour un programme de navigation hauturière. L’autre originalité du projet apportée par ce nouveau chantier se trouve dans l’approche d’« éco-conception » portant sur les matériaux et le mode constructif. Limitant fortement le recours aux moules ce dernier apporte une plus grande marge de liberté dans les déclinaisons et évolutions des bateaux ainsi conçus.

Qui sait lequel du père ou du fils est le plus passionné ? Peu importe. L’important ici est d’écrire un projet innovant au sein d’une culture familiale, pour aujourd’hui et les générations à venir. Passer le flambeau, le relais ; c’est la volonté d’Olivier Kauffmann. « Au début je voulais me faire mon propre bateau, pour ma famille et moi ; partir faire un tour du monde sur un catamaran performant et plaisant à vivre. Je rêvais à une qualité d’espace inédite. Aujourd’hui, l’envie a mûrit, et je tiens à le partager avec la grande famille des marins ».

Windelo c’est l’envie de s’exposer à quelque chose de nouveau, d’innovant, de performant, de plus grand que soi. Aller chercher des innovations sur des matériaux, des techniques d’industrialisation, des usages et impulser une nouvelle réalité économique. « Nous voulons faire partie de cette transformation liée au respect de notre environnement, c’est pour nous indispensable d’œuvrer dans ce respect des hommes et de la nature. Les hommes sont au cœur du projet avec la volonté de recruter et former une équipe de passionnés, entourés d’experts reconnus comme les meilleurs dans leur domaine ».

Et l’innovation ne s’arrête pas là, car le process constructif permet d’envisager des évolutions rapides d’un bateau à un autre tout en restant bien placé en prix. Projet ambitieux et respectueux, bienvenu(e) dans l’aventure Windelo.

Electric Boat Motors

Compact ⋅ efficient ⋅ reliable, 877-411-3526, the trusted solution for electric boating.

EP-5 Electric Outboard

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Ep-12 electric inboard, ep-20 electric inboard.

EP-40 Electric Inboard

Ep-70 electric inboard, ep-100 electric inboard.

EP-200 ELECTRIC INBOARD

Award winning electric propulsion.

Elco Motor Yachts has been at the forefront of marine innovation, proudly boasting a rich history spanning over 130 years. The company supplied 55 groundbreaking electric launches at the 1893 Chicago World’s Fair. The vessels, powered by Elco’s electric boat motors, swiftly captured the hearts of boating enthusiasts worldwide.

Today, Elco’s award-winning electric outboards and inboards are not only reliable and powerful but also embody the company’s steadfast commitment to sustainability. When you buy an Elco electric motor for your boat, you’re purchasing more than just a product—you’re investing in a cleaner, quieter boating experience.

Whether you need an inboard or an outboard, Elco has the best electric boat motors for sale for you when you’re ready to switch to electric propulsion. Our electric marine motors outshine traditional gas-powered motors. They’re quieter, they’re kinder to the environment, and they’re quality choices. Experience the superior performance and environmental benefits of our electric boat motors today.

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Yachting Monthly

• Digital edition

Electric yacht: What are the options for going electric?

• Will Bruton
• July 17, 2020

The options for having an electric yacht or a hybrid-electric yacht are growing in popularity; we outline the current options for those making the switch

The Arcona 380Z is a standard production yacht that has been adapted for electric propulsion. Note the increased solar panel surface area with soft panels bonded to the sails. Credit: Jukka Pakainen

A modern electric yacht can come in all shapes and sizes, from the latest high-tech speed boats with recently developed high-performance electric engines, to a traditional tender with an electric outboard on the back. Increasingly yachts are going electric too as electric engines become increasingly capable of propelling boats weighing several tonnes, and with the rigging for sails, at a reasonable speed for an acceptable length of time. 

Since the invention of the marinised engine , there has never been the capacity to store enough fuel to cover significant distances in boats that are smaller than a tanker, with fuel capacity always being the limiting factor. As such the best way to cover long distances on a boat fit for a small number of passengers was, and remains, wind power. 

For all the many green attributes that using the power of wind offers, there is no escaping that for most, fossil fuels still represent some part of sailing – whether that be a diesel engine to motor in light winds, onto and off a mooring , or to generate power for onboard electronic systems. Even a small tender used to go from ship-to-shore is often fitted with an outboard motor.

Recent advances in electric power, however, have started to make electric propulsion a reasonable alternative to fossil fuel power. Range will always be an issue but that has long been true of a traditional diesel engine. Improvements in lithuim-ion battery performance is, and likely will continue to, increase range every year. 

Spirit Yachts 44e – the ‘e’ stands for electric

Additionally electric power and batteries offer the bonus of being able to be recharged via solar panels , a wind turbine or hydroelectric power – via a hydrogenerator mounted on the stern of a boat sailing. 

At first glance the electric yacht market could appear in its infancy, but like every revolution, the will of the people is driving forward technology that only a few years ago was seen as the stuff of fantasy.

The market has responded to demand, and battery and motor technology has come on leaps and bounds, driven in part by the rapid development of electric cars.

It may not be commonplace yet, but electric yachting is here, even available ‘off the shelf’, so is it time to get onboard?

The Spirit 111 is a bold hybrid yacht, promising 30 miles motoring under electric power alone. Credit: Ian Roman/Waterline Media

A cutting edge electric yacht

Like Formula One, it’s the cutting edge of electric yachting that trickles down into mainstream production in no time at all.

For Spirit Yachts, a builder defined by a unique blend of traditional and state-of-the-art, electric yachting has been driven by demanding clients that want their yachts to be at the cutting edge.

Spirit Yachts have now produced a number of projects aimed at the all electric luxury yacht market including the Spirit 44e electric yacht and a recent project, the Spirit 111, had all the hallmarks of a superyacht project and the team had to earn their keep delivering to brief.

Managing Director Nigel Stuart explained how it works.

‘The 111 combines several cutting-edge technologies to deliver a something that’s never really been done before. A lithium-ion powered electric drive system can be charged by hydrogenation and also two high-wattage diesel generators.

‘Each generator is 22kw, meaning they can pack a lot of power into the system in a short period of time, they don’t need to run for long to fully recharge.

‘The prop is both a means of drive and power generation, so no separate hydrogenerator is needed. She will be capable of motoring under electric alone for more than 30 miles.

‘When you take on a project that’s electric, it makes you think hard about efficiency so the air conditioning, water heaters and everything in the galley has also been carefully selected to use less power.

‘For her owner there is very little compromise and some major advantages.’

Whilst it’s a long way from the average cruising yacht, the trickle-down effect of projects like the Spirit 111 can’t be underestimated.

Calypso , a Contessa 32, was the yard’s first foray into electric-powered yachts. Credit: Jeremy Rogers

Traditional electric yacht

Jeremy Rogers’ yard in Lymington is the birthplace of the iconic Contessa designs and a veritable temple to long keeled , traditional craft.

Less well known is the yard’s interest in electric auxiliary engines, something they have been involved in for more than 10 years.

Their first project, the refit of a Contessa 32 called Calypso, was an experiment by the Rogers family to see what was possible.

‘ Calypso was a test bed in the technology’s infancy,’ explains Kit Rogers of this early electric boat.

‘Inevitably, we didn’t get it all right, but we learned a lot about the dos and don’ts of electric yachting. The end result was a hybrid. The more we did, the more interesting the project became.

‘It’s not just the obvious, silent peaceful propulsion; it’s also the things you take for granted about a cruising boat. For example, no gas, we didn’t need it because we had electric power.

The yard has also worked on an electric folkboat conversion for a foreign customer.

‘The client, first and foremost, loves to sail. He sees the electric as an auxiliary option, along with the rowing and is excited to own a boat that’s quietly different.

‘He’s looking for a more connected experience and an electric boat helps him achieve it. When you’ve been motoring in and out of marinas under chugging diesel engines for years, the electric motor is something of a revelation.

Arcona has installed solar sails on its latest 380Z electric yacht

Off-the-shelf electric yacht

Perhaps the biggest indication of the future of the electric boat is the willingness of production and semi-production builders to pin their flags to the mast and embrace it.

One of the first was Hanse, who developed a version of their 315 utilising a Torquedo electric pod system.

Providing around the same amount of power as a 10 horsepower diesel, a 4.4kWh lithium ion battery pack powers the system.

Arcona, Dufour, Elan and Delphia also have electric boat models and are each taking their own direction on entering the market.

Arcona’s 380Z (the ‘Z’ stands for ‘zero emission’) fully electric boat has solar panel covered sails, capitalising on the large surface area to top up batteries under sail.

In the multihull market, there is even more scope for solar, wind and hydrogenation due to the horizontal surface area available for solar charging.

What are the options for an electric yacht?

Pure electric.

Purely electric systems can be broadly divided into two categories, high and low voltage.

The latter is the simplest option in terms of how it works and requires less specialist knowledge to install.

Kit Rogers installed a 48v Ocean Volt system in his latest project and remarked on the experience.

‘The advantage of the low voltage system is its inherent lack of complexity. Whilst we’ve coupled it with lithium ion battery technology, it can also be wired up to conventional lead acid batteries. There are pros and cons to both. What surprises everyone is the size, it’s a tiny motor and is surrounded by lots of space where the engine would normally sit.’

High voltage systems are more advanced, and utilising lithium-ion technology, their capacity is improving year on year.

For larger yachts this is generally seen as a better option.

A partnership between BMW and Torqueedo has led to the development of the Deep Blue 315v high voltage battery.

Effectively the same unit as found in the BMWi3 electric cars now often seen on the high street, the system produces a lot of power and is being used on the Spirit 111 project as well as catamarans.

Electric hybrid

One big barrier to entry exists for most potential electric yacht buyers – range.

Even the most advanced set-ups are limited to a maximum of a few hours motoring at cruising speed.

‘The electric motors excel at two things in particular,’ explained Kit Rogers.

‘The first is as auxiliary power for getting in and out of marinas. The second is engaged at low power to very efficiently motor-sail in light airs. If you want to do more than that, at present, you need to add a way of packing in the charge into the battery quickly whilst at sea; which means a generator’ .

As with electric cars and as enthusiasm builds for the technology, a hybrid option, pairing a generator with an electric drive system, is already proving popular and is probably the most practical option for those planning to cruise any distance.

Using a large generator, charge can be quickly put into the system when needed.

Once under sail, the yacht’s propeller becomes a hydro generator, meaning that diesel power is not needed day-to-day.

Solar can also be used to add additional charging capacity.

‘When a fully integrated electric hybrid system is incorporated into a cruising yacht from the outset, its possibilities really become clear,’ explains John Arnold, UK manager at Torqeedo.

‘Sailing for days on end with no engine noise is entirely possible. There are other less obvious benefits too. Electric drives have no long rotating shaft, so can be used as pod drives as well, meaning the boat is far more manoeuvrable than even a yacht equipped with bow and stern thrusters.’

Spirit Yachts 44e

How much does it cost to convert a yacht to electric power?

The technology exists, but anyone seriously considering going electric will want to crunch the numbers.

In the case of taking out a traditional inboard diesel and replacing it with an electric system, it’s relatively easy to work this out.

However, unless you include an auxiliary generator, you will be limited to battery range alone.

For this reason, we’ve done a like for like comparison for a 35ft yacht engine refit, including the cost of a generator to make the system a practical hybrid.

Unsurprisingly, at the moment, there’s a big difference in cost, but at between three to six times the cost, it is gradually coming into the realms of possibility, and prices should continue to drop as technology develops and evolves.

Ocean Volt SD10 Motor system (including batteries, charger and 6kw generator): £30,825.16

Beta Marine Beta 20hp Marine Diesel: £4,100

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The Pros, Cons, and Future of Electric Yachts and Sailboats

• By Sail Greener
• Last updated: April 27, 2022

Sail Greener is supported by our readers. When you buy through links on our site, we may earn an affiliate commission.

If you sail you likely spend considerable time—and money—cleaning, fixing, and worrying about your diesel or gas engine. When it comes to safety, your backup propulsion is as important as your sails. Can you rely on electric motors for safety? What are the pros and cons of buying an electric sailboat?   

Diesel engines are reliable, but they pollute. Diesel (and gas) engines emit greenhouse gasses and exhaust that includes particulate matter and carcinogens that are a risk to human health. 

Until recently, alternatives to marine diesel engines were limited. Boat owners could carry out their own repower projects or purchase expensive commercial electric motors. Storage capacity was a problem.

Fortunately, the winds are shifting and there are now numerous high quality and economically competitive alternatives to traditional marine engines. In this article we describe the pros and cons of purchasing a new motor or repowering an existing engine. We also describe the market for marine electric propulsion systems and identify leading boat builders, manufacturers, and installers.

Why do we need electric sailboats?

The climate is warming and we continue to pump greenhouse gasses into the atmosphere at a torrid pace. Transport emissions, including road, rail, air and marine transportation, account for nearly a quarter of global CO 2 emissions. 1 https://www.ipcc.ch/report/ar5/wg3/transport/ According to the United Nation’s International Maritime Organization , marine traffic accounts for nearly 3% of the world's CO ­­­ 2 emissions.

While emissions from recreational boaters are less than those from shipping and fishing fleets, they are still considerable. According to an estimate from electricmotoryachts.com , if just 5% of the roughly 13 million registered boats in the United States today repowered with electric, boaters would eliminate an estimated 1 billion pounds of CO 2 emissions. Scaled across boaters around the world, the potential for boaters to meaningfully reduce greenhouse gas emissions is significant.

Exposure to diesel emissions also poses health risks. The smallest particulate matter can contribute to heart attacks, strokes, and lung disease. High exposure to small particulates can impair brain development in children. The International Agency for Research on Cancer , part of the World Health Organization (WHO), classifies diesel engine exhaust as carcinogenic to humans.   

Is there a market for marine electric propulsion?

Global concern over climate is leading to a revolution in how we produce and use renewable energy. This is particularly true in the transportation sector. Sales of electric cars in 2019 increased 40%. In 2020, Tesla motors alone produced almost 500,000 new electric vehicles. This helped to propel Elon Musk to become the world’s wealthiest person. Electric vehicle penetration is still just about 3% but growing dramatically 2 https://www.mckinsey.com/industries/automotive-and-assembly/our-insights/mckinsey-electric-vehicle-index-europe-cushions-a-global-plunge-in-ev-sales# A key factor driving this growth, according to the European Patent Office (EPO) and the International Energy Agency, is innovation in rechargeable lithium-ion batteries and other storage technology. Batteries now account for nearly 90% of all patenting activity in the area of electricity storage. Between 2005 and 2018, patenting activity in batteries and related electricity storage technologies grew four times faster than the average of all technology fields. 3 https://www.iea.org/reports/innovation-in-batteries-and-electricity-storage

It is clear we are reaching a tipping point for electric automobiles and trucks 4 https://www.theguardian.com/environment/2021/jan/22/electric-vehicles-close-to-tipping-point-of-mass-adoption . Is the marine sector also experiencing an electric revolution?

The market for marine electric propulsion systems is lagging what is happening with cars and trucks. However, the potential for growth in this sector is extraordinary. In an article published in Yachting World, Christoph Ballin, CEO of electric motor manufacturer Torqueedo, estimated that only about 1.3% of marine propulsion systems are electric. 5 https://www.yachtingworld.com/features/future-yachting-smart-technology-126136 According to an article published in 2017 by IDTechEx there are over 100 manufacturers of electric boats and ships with an estimate of more than $20 billion in global sales by 2027 for non-military boats. According to the IDTechEx report, recreational boats are the largest—and fastest—growing electric marine market by sales.

The growth potential is enormous considering the size of the recreation economy. In the United States alone, in 2019 outdoor recreation generated US$ 788 billion dollars in output. 6 https://boatingindustry.com/news/2020/11/12/orr-provides-breakdown-of-latest-recreation-economy-data/  An estimated $37 billion of this came from retail sales of boats, engines, accessories and marine services. According to the U.S. Bureau of Economic Analysis (BEA) Outdoor Recreation Satellite Account (ORSA) data, Boating and fishing was the largest conventional activity for the nation as a whole, adding  US$ 23.6 billion to the economy. This was the largest conventional activity in 30 states and the District of Columbia and the second largest activity in 11 states. 7 https://boatingindustry.com/news/2020/11/12/orr-provides-breakdown-of-latest-recreation-economy-data/

Pros and Cons of Electric Motors for Boats

What are the pros and cons of electric motors for sailing?

Pros of electric propulsion

• Less noise : Electric motors are quieter than diesel engines and nearly vibration free.
• Lower long-term cost : Motors last a long time and require no fuel. You need batteries and electricity, but the sun and wind can recharge your batteries. You won't need to constantly change engine fluids, filters, or worry about leaks or old tanks.
• Cleaner and healthier: You won't end up with an oily mess in the engine room and bilge
• No emissions, no exhaust : Passengers and crew won't be exposed to hazardous fumes and particulates. You won't be spewing out carbon pollution.
• Instant power: Electric motors can go from zero to full torque instantaneously. Motors do not need to wait for engines to warm up.
• Weight and storage : Electric propulsion systems are typically less heavy than equivalent diesel systems. OceanPlanetEnergy.com estimates that electric propulsion systems are typically 1/3 the weight of diesel systems. This depends, however, on the weight of your battery bank.
• Easier maintenance and lower costs: Electric motors are simpler and easier to maintain than diesel generators. OceanPlanetEnergy.com estimates that maintenance costs could be 1/20 of the maintenance costs of a diesel engine in the first decade, even less over time because of electric propulsion systems use far fewer moving parts.
• Increased reliability and safety : Fewer moving parts translates into fewer breakdown which means which means more safety.
• Regeneration:   Batteries can be recharged while sailing using, solar, wind, and hydro generation systems.  For example, at sailing speeds over 6 knots Oceanvolt systems are reportedly able to generate significant power for recharging the battery bank.
• Improved maneuverability: Electric motors have high torque at low RPM, which can make maneuvering in tight spaces like marinas more precise. Electric motors can switch from forward to backward instantaneously.

Cons of electric propulsion

• Range anxiety: Depending on your battery bank and ability to recharge, you may have less range with an electric motor compared to a diesel engine.
• Cost: Electric motors can be expensive relative to combustion engines, but costs are plummeting.
• Lack of familiarity : Sailors familiar with traditional engines may not feel prepared or comfortable to switch to a new form of power.
• Fires: There can be a small risk of fires from batterie with improper maintenance, but this is also true with internal combustion engines.
• Charging time: Recharging batteries can take time, but charging times are changing quickly. Tesla V3 Superchargers support peak rates of up to 250kW per car, which translates to about 75 miles of charge in 5 minutes for a Model 3 and charge at rates of up to 1,000 miles per hour 8 https://www.tesla.com/blog/introducing-v3-supercharging . In January 2021 the Israeli company StoreDot announced new “exreme-fast-charging” lithium-ion batteries that could charge a car battery capable of 100 miles of charge in 5 minutes.   It will only be a matter of time before similar speed and capacity is available for boaters.

Industry Leaders

Who are industry leaders in the electric sailboat space?

Electric propulsion companies

Numerous companies produce electric and hybrid propulsion systems for the marine sector. Some of the best known and highest quality brands that provide electric propulsion systems for yachts and sailboats include:

• Elco Motor : Elco is one of the industry leaders in this field. The company has been around for more than 125 years and now produces a wide range of outboard and inboard electric and hybrid propulsion systems. 
• OceanVolt : The Finnish company is one of the industry leaders in electric propulsion. The company produces a wide range of electric propulsion systems for monohulls and multihulls. The company has provided cutting-edge electric propulsion systems for Vendée Globe racers, including Alex Thompson’s Hugo Boss and Conrad Colman in 2017, and other racers like French Olympic sailor Damien Seguin.
• Torqeedo : When Torqeedo was founded in 2004, concepts like “clean tech” and “electromobility” were just a glimmer in Mother Earth’s eye.  One of the pioneers in the modern marine electric propulsion sector, Torqeedo is now one of the market leaders. The company offers outboard and inboard electric motors and hybrid drive systems ranging from 0.5 km to 100 kw in addition to diverse accessories from lithium batteries and solar charging equipment to smartphone apps.
• Aquamot : This German company produces in-house electric propulsion systems for electric for boats and ships, including motors, batteries, and chargers.
• Kraeutler Elektromotoren produces a wide range of industrial, ship drive, and boat motors, including drive units for motor and sailing boats.

Electric sailboat manufacturers

Who builds sailboats with electric motors?

Electric propulsion is going mainstream. Dozens of boat builders are building electric-only boats (like SoelYachts.com and Silent-Yachts.com ). Some traditional yacht builders now offer electric propulsion options—and this will likely grow to include all major manufacturers in coming years. Examples of leading yacht manufacturers that include electric propulsion options include:   

• Arcona Yachts : A leading builder of high quality yachts from Sweden, Arcona is starting to offer high quality zero-emission models, such as the Arcona 415 .
• Alva Yachts : The German luxury electric yacht brand has designed both mult-hull (non-sail) and monohul (sail) boats. The company’s 25-m Ocean Sail 82 was designed with a hybrid propulsion system and a high capacity battery bank.
• Baltic Yachts : The Finish producer of luxury yachts and a world leaders in advanced composite yacht building in 2020 selected Oceanvolt for the company’s 68-foot Café Racer manufactured in Finland. The Javier Jaudenes designed boat is just over 20 meters long and 5.5 meters wide. 
• In 2001 Elan Yachts and Oceanvolt agreed to partner to build a full range of electric-powered yachts ranging from the luxurious GT6 to the the sporty E-Line performance cruisers.
• Hanse Yachts : The world’s third largest boat builder, Hanse produces the Hanse 315, which includes an electric rudder-drive option.
• Salona Yachts : A Croatian boatbuilder, Salona builds the Salona 46, a fast, comfortable, and luxurious electric yacht and winner of the Best Green Boat Award at the  Newport International Boat Show . 
• Sunreef Yachts Eco :   A manufacturer of luxury bespoke multihulls, Sunreef Yachts Eco catamarans are equipped with composite-integrated solar panel systems and lightweight batteries for energy efficiency and environmentally-conscious luxury cruising.
• Wally : The Dutch yacht builder produces, among its many other models, the 11.35 meter Wallynano MKII, which relies on an OceanVolt electric propulsion system
• Zen Yachts : A new company established in 2021, Zen builds what it claims is the world's first series production catamaran equipped with a wingsail.

Electric conversion companies

Who can help me convert my sailboat to electric propulsion?

A growing number of companies are dedicated to helping boat builders and individuals convert their yachts. These companies may provide design and support options for advanced battery systems, solar and wind systems, hydrogenation, and overall system design. Some of these companies produce their own electric motors and systems. Leading companies in the field include:

• OceanPlanet Energy : This company includes some of the giants of the industry. Bruce Schwab was the first American to officially finish the Vendee Globe. Nigel Calder is one of the best known sailing technology writers, including his must-read classic, Boatowner’s Mechanical and Electrical Manual. The company provides energy storage, charging, and monitoring systems; system design and consulting.
• Electric Yacht : The Minnesota, USA-based company with the eponymous name supports sailors interested in electric propulsion systems. The company helps boaters design and size system and provides motor kits, batteries, chargers, and other components. The company provides examples of conversion projects on its website.
• e Marine Systems specializes in distributing solar panels, wind generators, electric propulsion drives, inverters, and energy storage systems. The company is located in Fort Lauderdale, Florida, USA.
• Naval DC produces both “pure” solar and hybrid electric systems ranging from 10 kW to 1 MW. The company provides lithium battery solutions, data and monitoring systems, electric propulsion, and matched propeller systems.

Yacht dealers

A small but growing number of yacht dealers offer new and used electric boats. Green Yacht Sales is an example of a small company that supports the sale of electric yachts and systems from diverse manufacturers.

Global clearinghouses, like YachtWorld and Boat Trader , now provide options to filter searches for electric propulsion sailboats.

Battery technology and companies

Until recently, the amount of energy batteries could store was limited. The cost of buying a new battery bank was prohibitive for most sailors. Today, however, costs are dropping and batteries provide more charge. Range anxiety remains one of the biggest reasons sailors don’t want to swap out polluting diesel engines for quieter and cleaner all-electric systems. However, this concern will soon be obsolete.

There are many high quality marine battery suppliers. Some of the major players in the LiPO market include:

• ChargeEx Lithium Ion Batteries
• Dakota Lithium
• Dragonfly Energy
• Victron Energy

Successful Examples

Okay, this all sounds good in theory, but is it really possible to throw out your old engine and install a new motor? Here are a few examples of individuals and companies making the switch to electric yachts.

As with many disruptive technologies, it is easier for wealthy individuals to pay more—often much more—for tomorrow’s technology today. That said, these Super Early Adopters are a harbinger of things to come. These individuals may be risk takers but they are also typically really smart and forward-thinking.

Swedish billionaire Niklas Zennstrom is one example of a pioneering “mogul” in the electric yacht world. The founder of Skype and former Time Magazine 100 Most Influential People awardee, in 2018 Zennstrom’s team launched Rán VII. Yachtingworld described the boat as “…so angular it calls to mind Darth Vader or a Stealth bomber.”

Zennstrom shared his views on the future of electric racing in a CNN article in 2018:

“Having gone through the design, build and initial test cycle there is no doubt to me that the future for racing yachts is electric propulsion. It's lighter, less drag, quieter, and most importantly it is environmentally friendly.”

Do-it-yourselfers have been converting electric sailboats for years. The mainstream boating magazines and the media are increasingly showcasing the stories of these sailors retrofitting their boats. A few examples of well-publicized electric yacht conversion stories include:

• In 2019 Yachting World wrote an article, “How hybrid sailing yachts finally became a feasible option.”
• Dufour 382: According to an article in Yachting World , the owners Alcyone , a Dufour built in 2016, was retrofitted with an Oceanvolt SD15 saildrive moto r.

The future of electric sailboats

We are facing a climate emergency and the world is mobilizing to reduce emissions of greenhouse gasses. A growing number of boat builders, engine and battery producers, service companies, and individuals are addressing this need by building and retrofitting emission-free sailboats.  We are still in the early stages of this transformation, but change is coming quickly.

Some of the major challenges—and opportunities—for catalyzing this transition in coming years include:

• Battery storage, charging, and cost: The pace of technology change in the battery sector is dizzying. The amount of charge, the time to charge, and the price per kilowatt of battery storage systems are all improving.  Superchargers are already widespread on land. How long will it take for marine supercharging stations to fill the world’s marinas?
• Overcoming tradition : Sailors who have used the same technology for decades may hesitate to switch to new technology. Sailors used to heavy yachts and small batteries may look with skepticism on this new technology. Range anxiety is very real in the middle of the ocean. 
• Cost : As with any new technology, early adopters may have to pay more. The cost of electric propulsion, solar and wind power, and battery storage are dropping quickly. Cost will soon be less of a concern and may become a clear benefit.
• Retrofits: Many boats still sailing form 1960s and 1970s so 50 years of old boats locked in. But this is also an opportunity for individuals and companies who are willing and able to take this space
• Manufacturing: making boats expensive and companies may not want to take risks. But new companies are emerging, and the major yacht companies now coming out with electric options (examples).

We are at the dawn of a new age of sailing. With each passing month electric propulsion technology is improving. Motors are getting better, batteries and solar panels are getting cheaper, and electric sailboats are starting to become mainstream.

Finding more information

If you want to learn more about healthy products, check out The Sail Greener Guide to Healthy Sailing . If you want to learn more about who is working to conserve the ocean, see our list of The Best Ocean Conservation Organizations for Sailors .

• Sail Greener
• Originally Published: February 26, 2022

Table of Contents

• climate , diesel engine , electric motor , environment , sailboat , yacht

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• This 246-Foot Electric Superyacht Concept Is Designed to Shine Like a Diamond

Feadship's new C vessel catches the light just like the gem.

Rachel cormack.

Digital Editor

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Feadship is marking its diamond jubilee with a new marine gem.

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At the center of the C lies an atrium with floating stars and a lift without walls that allows seafarers to navigate decks in a novel fashion. Highlights of the living quarters include a duplex owner’s suite, a partially enclosed sea lounge that can be used at anchor or on the waves, a beach club with a sea-level dining area, and a private observation deck with an articulating crow’s nest. To top it off, C is outfitted with two infinity pools that match the hexagonal shape of the atrium and other seating areas.

C also shines on the technology front. She features a sleek hull and a fully electric propulsion system similar to sisterships Breathe and Savannah that renders her 30 percent more efficient than a typical 246-footer with dual shafts, propellers, and rudders, according to Feadship. Her streamlined underwater profile means less wake, too.

C will also be equipped with fuel cells and lithium-metal batteries that will together cover all power needs. (Feadship has also incorporated fuel cells on Project 821 .) Green methanol will be the fuel of choice due to its relatively high density and ease of use. Normal cruising speed on the fuel cells is 14 knots, while a top speed of 17 knots can be achieved by adding the battery power. In addition, two wave-actuated fins can generate enough grunt to cover one-third of the hotel load.

C will be fully unveiled at the Monaco Yacht Show next week. The yacht is just a concept at this stage, but Feadship says she is completely buildable. Perhaps the yard will land a buyer at the show.

Rachel Cormack is a digital editor at Robb Report. She cut her teeth writing for HuffPost, Concrete Playground, and several other online publications in Australia, before moving to New York at the…

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Faster than ever, electric boats are all the rage. Even Tom Brady is hopping on the trend.

We’ve seen electric vehicle competition heat up on land. Could we be seeing the beginning of another one on water?

Electric boats probably won't be filling up U.S. waters anytime soon, but boat builders, sports stars and students are pushing the boats’ limits and driving this $3.3-billion-a-year business into the mainstream.

The most ostentatious signs of electric boats' future are the speeds that two groups have achieved in recent weeks. In August, Canadian boatbuilder Vision Marine hit 116 mph, and in recent days, Princeton University’s electric speedboating team topped 117.5 mph.

Those speed milestones serve as a fitting prelude to the new electric boat racing series that starts early next year with investors such as former NFL great Tom Brady and Rafael Nadal, holder of 22 Grand Slam tennis titles.

How the fastest electric boats compare with traditional boats

Can't view our graphics? Click here to see them.

Princeton's record, certified by the American Power Boat Association, officially stands at 114.2 mph after averaging two runs of 111 and 117.5 mph. That easily surpassed the previous APBA record for electric boats of 88.6 mph set in 2018.

Andrew Robbins, CEO of the Princeton team, said he knew from his first 83 mph run this past spring that team members had something special underneath their refurbished hydroplane hull, which is older than any of the 40-some students in the club.

"It's an interesting feeling. As you go faster, you start to feel you're no longer touching the water – you're floating," Robbins said. He went for a second run and the boat unofficially bettered the standing record by almost 3 mph.

How do students get a boat up 117 mph on a lake?

"We've been able to curate a very, very good group of team partners," Robbins said. "We knew if we were going go this fast, we had to work with the best in each field."

That group has included Black Sheep Racing and Flux Marine , a start-up that builds electric outboard motors. Two of Flux Marine's founders, Ben Sorkin and Jonathan Lord, are 2018 Princeton mechanical and aerospace engineering graduates.

The team also counted on Black Sheep Racings' John Peeters, holder of 61 speed boat racing records, to pilot the 14-foot carbon-fiber boat. Below, Peeters reaches 117.5 mph during his second run Oct. 26 on Lake Townsend in Greensboro, North Carolina.

Electric boat acceleration much like an EV's

Don't expect the Princeton club to start mass-producing their boats anytime soon – unlike Vision Marine, which has used the Lake of the Ozarks Shootout to showcase the power of their electric motors. They raised their top speed from 109 in 2022 to 116 this year.

Much like the quick acceleration electric car drivers experience, boats with electric motors can rapidly reach their top speeds.

"Oh, the torque. That's how we can hit 116 miles an hour on a three-quarter-mile track," said Bruce Nurse, investor relations representative of Vision Marine. "It's the torque and how fast it gets up to plane."

The trade-off, as with electric cars, is the faster you move, the faster you deplete your battery. But Nurse points out that the recreational boaters who buy boats with their engines aren't looking to set new speed records on the lakes, rivers or coastal waterways.

How is an electric motor set up in a boat?

High-voltage electricity, water and people aren't generally a good combination, so builders take extra care with the manufacturing and installation of the motors.

"We started out with a typical EV battery that you put on a chassis. It long, it's wide, it just doesn't fit in a hull," Nurse said. Since then, Vision Marine worked with Octillian and Neogy to design and develop their own marine-certified outboard electric motor. For now, Vision Marine provides motors only for new boats.

Princeton's boat is half the size of Vision Marine's. It also has only one motor versus two. So cutting weight became key, including four modest lithium batteries.

"The trouble was building in an electric powertrain that could suit the hull well. So mostly it's keeping our weight down and our our power up," Robbins said. "Making a powertrain that was specifically curated for that hull was probably the trickiest."

A vision for less pollution in waterways

About 7 in 10 Americans (72%) say they would consider purchasing an electric car because of the environmental benefits and to save money on gas (70%), according to the Pew Research Center .

On the water, the environmental benefits go beyond reducing emissions from gas-powered engines. The Ocean Conservancy estimates U.S. boaters annually spill, throw away or dump 30 times the oil that escaped into Alaskan waters from the Exxon Valdez in 1989. A portion of that oil can be attributed to recreational boaters' fueling miscues.

"We understand you're not going to get rid of gas and diesel engines," Nurse said. "We know the consumer out there is becoming environmentally conscious. That's why you're seeing the EVs taking off."

In 2025, California will require tour boats to be at least partially zero-emission for sunset cruises, whale watching or similar uses. By the next year, all short-run ferries must be zero-emission.

Tom Brady and the electric boat racing series

The UIM E1 World Championship offers to bring together more environmentally friendly racing with a fleet of electric boats called RaceBirds, boats from which you might expect Luke Skywalker to emerge after watching them skim across the water.

"I think the E1 Series is a really cool competition," Robbins said. "The style of boats has never been raced before – whether they're gas or electric."

The series, which begins Feb. 2 in Saudi Arabia, is made up of seven teams led primarily by global sports stars, including Brady, Nadal, cricket player Virat Kohli, former soccer player Didier Drogba and motorsports racing driver Sergio Perez.

"The boats look amazing," Brady said shortly after taking his E1 series ownership role in July. "They're sleek and cool and modern – exactly what you'd think for an electric racing boat."

Classic look hydrofoiling electric boat debuts in Moscow

A team in Russia has developed this sleek hydrofoiling electric boat with a retro-tech classic runabout look, both inside and out.

The boat is called the Molniya – Russian for ‘lightning’ – and uses fixed surface piercing (SP) foils rather than the retractable inverted-T fully submerged (FS) type on boats like the Candela 7 .

The Molniya prototype was built by Artem Markov and a small team he assembled in Moscow. Markov is a graduate of the Moscow Automobile and Road Construction Institute, where he was part of their Formula MADI electric car racing team that competed against other universities from around the world.

Hydrofoiling electric boat idea started in 2016

Like many other electric boat developers he is also a long time sailor and says “ I have never been able to understand what is the beauty of going on motor boats with a lot of vibration and noise. So, I decided I wanted to find a way to transfer the silence and comfort of a sailing yacht to a boat. The idea came to me in 2016, and from that moment I started working on the project .”

He is a big fan of the work that the team at Candela has been doing, and is well versed in their reasonings of why hydrofoiling is the way to reduce drag and increase efficiency and comfort. So he knew foiling was the way to go and began to design his dream boat.

It is one thing to know exactly what one wants, but b udget realities quite often make inventors adapt. So he found a classic fibreglass-and-aluminum hull and went to work redesigning and converting it. The team had to strengthen and reinforce the hull to handle the stresses from the front foils. At the stern of the boat they designed  protruding half-wings that would help lift the boat onto those front SP foils as it accelerated.

80kW motor mounted to stern drive unit 

That gives the 8.9 m • 29 ft boat a cruising speed of about 20 kts • 37 km/h and maximum speed of 36 kts • 66km/h. As for range, the Molniya can go for 135 Nautical miles at 5 kts, 17 Nm at 25 kts and 20 Nm at the top speed. 

For the battery, they have taken stock lithium-ion cells and developed the modules themselves. The size is 160kW and there are some creative and useful ideas incorporated into the charging and battery management systems. One is the ability to connect a warning system to a GPS route so if you are driving at a speed that is taking yo u beyond range of getting back to shore the motor will automatically slow down. When you do get back, a full 0-100% charge takes 3.5 hours and you can check status through SMS.

One of the intriguing things about the Molniya is that all of the electric boat technology has been incorporated into a striking overall retro look. The dashboard looks like it might have been taken from a 1950s luxury car catalogue, but of course the actual meters are all digital. The interior of the entire boat harkens back to an earlier day, appearing ready to whisk 6 passengers off to a swing era supper club.

From prototype to production

Having built and tested the prototype from an existing hull, the goal of Markov and the team is to move to production mode and use the materials he always envisioned in his dream boat. While the aluminum and fibreglass of the original have been useful for testing, speed and range will benefit from materials like much lighter carbon-kevlar.

The adapted stern drive was useful for proving the hydrofoiling electric boat concept, but all of the designers and engineers are keen to see the improved efficiency they will get from a motor, drive and battery system they have designed from scratch for the Molniya. As for the foils themselves, the production model will use lighter, thinner composites instead of stainless steel.

Obviously the spring and summer of 2020 has not provided the best opportunities to introduce the prototype at boat shows and stir up interest with consumers, the trade or investors. It seems, though that the Molniya is the type of boat that should appeal to peopl looking for the same thing Artem wanted for himself: a classic motor boat experience but one that is quiet, odour free…and smooth sailing.

You can find out more on the Molniya website, lightning-foil.com .

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WATCH VIDEOS

GM offering adapters to help electric vehicle owners access Tesla chargers

General Motors is now offering adapters to help its electric vehicle owners access Tesla chargers.

The Detroit automaker said Wednesday that it is opening up access to more than 17,800 Tesla Superchargers for its customers, with the use of a GM approved NACS DC adapter. Customers in the United States will be able to buy the adapter for $225 through GM vehicle brand mobile apps.

By using the Tesla Supercharger network, GM EV vehicle owners will have access to more than 231,800 public Level 2 and DC fast chargers in North America.

"Enabling access to even more publicly available fast chargers represents yet another way GM is focused on further improving the customer experience and making the transition to electric more seamless," Wade Sheffer, vice president of GM Energy, said in a statement.

Last year the White House announced that Tesla would make some of its charging stations available to all U.S. electric vehicles by the end of 2024. The plan was to make at least 7,500 chargers from Tesla's Supercharger and Destination Charger network available to non-Tesla EVs by this year, the White House said.

Take a look at the world's first Tesla Cybertruck patrol vehicle

The plan to open the nation's largest and most reliable charging network to all drivers is a potential game-changer in promoting EV use, a key component of President Joe Biden's pledge to fight climate change. Biden has set a goal that 50% of new U.S. car sales be electric by 2030, and he has promised to install 500,000 chargers across America and build a network of fast-charging stations across 53,000 miles of freeways from coast to coast.

GM said that approved NACS DC adapters will be made available to U.S. customers first, followed by Canadian customers later this year.

The company is not the only automaker to start using Tesla's network. In February Ford announced that its EV owners could use much of Tesla's network, as long as they used an adapter that the company provided for free and began shipping in March. Rivian said in 2023 that it would be joining Tesla's network this year, with existing vehicles needing an adapter. The company said at the time that vehicles made in 2025 and beyond would come standard with a Tesla charging port.

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Ncm Moscow motor starting to become very noisy, should I worry?

• Thread starter -sandro-
• Start date May 11, 2024

• May 11, 2024

I own the NCM Moscow standard edition since 2019 with 10000km on it today. A few days ago after a MTB ride at low speeds on a very steep trail it started to become more noisy, especially at high currents/low speeds (below 10km/h), it doesn't start that noisy at the begging but once you ride it a lot, I suppose once the temperature goes up. I'm aware this motor is not made for this kind of rides, you have to avoid using high levels if you don't get any speed gain to avoid overheating. It wasn't a particularly hot day and the steep sections were about 2 minutes each (7km/h average) for about 3 times. Weird thing is that it wasn't the first time I did this, over the years I did this many times with same struggle (you can hear it struggle) but never ended up with the weird noise afterwards. I'm not sure how the motor is made but it's possible I fried some internal parts causing the noise? Anyway I think the motor is "about to die", could last "forever" but the noise sometimes is really bothering, but still works just fine. Probably some maintenance could work (bearings oil?) if that's necessary but I can't do it, and I asked many bike shops and they don't know how to do it and won't dare to open a motor they don't sell. NCM offers new motor for €120 but you need to mount on the wheel and reattach every single spoke. I'm not sure if I can do that.  

Well-Known Member

Hi, seems pretty easy to do probably much easier than respoking, at least for the planetary gears. They also sell the wheel entirely even though that is just a waste of materials.  

• May 12, 2024

Another question, NCM said they could ship this without the case and this requires to remove spokes as well. However according to the video it doesn't look like you need to, am I right?  

Attachments

-sandro- said: ,.. NCM said they could ship this without the case and this requires to remove spokes as well. Click to expand...

Ok so I'll try to open it, I read some people just needed some grease on the gears to fix the noise.  

From that video doesn't look like you need to remove the freewheel, the freewheel is attached to the other cover and then the motor core is just attached by compression. So basically I could just replace the entire set all together with no special tools. I see all this from 10:20 in the video.  

-sandro- said: From that video doesn't look like you need to remove the freewheel, the freewheel is attached to the other cover Click to expand...

I just remembered that the motor cable on my Das-Kit (MXUS) Motor comes out of the motor on the brake rotor side. The Bafang motors have the motor cable coming out the opposite side through the freewheel. I don't know if or how that would make any difference on how it's assembled? Coincidentally, I found out that the motor firing order is reversed for my Das-Kit motor. Probably because if the cable goes in the opposite side, the armature has to spin in reverse?  

Active Member

I'm sure many of we Das-Kit owners would be interested in how this works out....as we likely will deal with it at some point. If you have time, maybe take some pics along the way to share? If worse comes to worst and you need to relace a new motor into your wheel, I'm sure you can do it. I had no experience doing that, but succeeded in relacing 2 wheels myself. A bit time consuming but not rocket science , with help of course from the University of YouTube.  

• May 13, 2024

Wait, things are starting to get "messy". Not sure if all being on the opposite side changes anything. I would like to see someone that opened this motor already. Probably someone has a video or pictures already?  

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