hydro generator sailboat

Yachting Monthly

• Digital edition

Everything you need to know about hydrogenerators

• Sam Fortescue
• December 13, 2023

Design developments have made hydrogenerators the most efficient form of sustainable auxiliary energy for yachts. Sam Fortescue reviews the latest innovations

The potential of hydrogeneration has been well understood for decades, but it’s only over the past 15 years that the idea has started to become properly commercialised. In essence, it’s a very simple concept: the boat’s motion through the water turns an alternator which generates electricity to recharge the onboard batteries.

‘Every yachtsman owns a sophisticated wind energy machine in the form of the yacht itself,’ explains Peter Andersen of Eclectic Energy, which manufactures the Sail-Gen and Duogen hydrogeneration systems. ‘Hydrogeneration provides a simple way of converting a small part of the power harnessed by the yacht’s sails directly into electricity.’

Because water is a much denser medium than air, a small hydrogenerator fitted to the transom of a yacht can potentially produce a great deal more energy than if a larger wind turbine was fitted to it.

‘Kinetic energy increases proportionally to the cube of the velocity,’ adds Andersen. ‘That means producing 300 amp-hours per day or more is a realistic prospect while cruising at 7-8 knots with a hydrogenerator fitted. And it’s the reason why more and more boat owners are now opting for water generation, although it’s still not as popular as it should be.’

By contrast, a tradewind run with a wind turbine might yield just 80 amp-hours per day, because the apparent wind on a run is lighter. Good performance might see 40W output from 10 knots apparent. Similarly, solar panels only produce a fraction of their rated output for most of the day, so you’d need a large array to match the return of a modern hydrogenerator.

A blend of all three will, of course, give the best outcome for different conditions at anchor and under way – but on passage, it’s hard to beat the benefits of a good hydrogenerator.

Watt&Sea’s hydrogenerator is a flexible option

Speed v drag

The speed versus drag issue has always dogged hydrogeneration technology, mainly because hydrogenerators only put out meaningful energy once a boat reaches speeds of five knots or more. However, the increasing use of hydrogenerators on the international offshore racing circuit has started putting paid to most of those concerns, with all manufacturers now agreeing that the extra drag of the impeller in the water is negligible. It also becomes non-existent once the boat reaches hull speed.

The main issue for cruising sailors is the boat speed required to obtain meaningful energy from a hydrogenerator, which is mostly a question of the diameter and pitch of the impeller. Just as you need to ensure that an auxiliary propeller is matched to both the power of the engine and the speed of the hull, so the impeller on a hydrogenerator must be correctly sized for the speed of your boat under sail and desired power output.

The pitch also needs to be set to offer the optimum angle of attack for the boat’s likely range of speed through the water. That’s why leading manufacturers offer a choice of impeller, or at least an adjustable one.

Hydrogeneration is the most efficient form of sustainable auxiliary energy for yachts

The Watt&Sea is the most flexible in this respect. Its two models (300W and 600W maximum output) can be equipped with a 240mm diameter impeller or a 280mm unit. The difference in output is striking: at five knots boat speed, the smaller one produces 100W, while the larger one can manage 120W. Over the course of a day, that amounts to an extra 40 amp-hours on a 12V system.

The smaller impeller has a maximum boat speed of 11 knots, which will be enough for most cruising monohulls. Only sporty catamarans would need to consider the smaller 200mm impeller with its 13-knot top speed. Faster than that and you’d need to look at a race model with a variable pitch.

Charging performance

Apart from price, the factors differentiating the various brands on the market are their charging performance and mounting system.

Eclectic Energy is the only manufacturer whose generators rectify the current on board to produce a DC output that can be wired directly to the batteries. This has the benefit of simplicity, but requires beefier cables running all the way from the generator to the batteries.

The Duo Gen hydrogenerator from Eclectic Energy

Watt&Sea’s hydrogenerator puts out a three-phase, low-amperage alternating current that runs through a DC converter. The converter monitors the battery voltage to determine whether it is in the higher power absorption phase or the lighter float phase of charging. After that, an electromagnetic brake stops the impeller if it’s spinning too fast and becoming dangerous.

Swi-Tec’s charge controller funnels all the power from the generator into the batteries until they reach a predetermined voltage. At this point, the MPPT (Maximum Power Point Tracking) algorithm reduces the charge to nearly nothing, a buzzer sounds to alert the skipper and the impeller brakes itself automatically. It can then be changed to ‘freewheel’, allowing the propeller to rotate freely.

The Remoran is perhaps the most ambitious of all, with a charge controller that can automatically detect the system voltage and then apply a ‘smart charging algorithm’. It also interacts with a smartphone app via Bluetooth, allowing you to keep a close eye on its performance and power output.

A Sail Gen hydrogenerator mounted on a yacht’s transom

Mounting systems

While Watt&Sea supplies a pod-based system that can be permanently fitted under the hull, a removable transom fitting is still the most popular choice, allowing the unit to be removed and stowed when not in use. Alignment, though, will have a significant impact on a hydrogenerator’s performance, with the best results coming from a clean, clear flow of water. Manufacturers therefore recommend an offset mounting outside a direct line with the rudder.

There is a balance to be struck, however, as heeling can make one tack more productive than the other. On twin-rudder boats, a central mount works well.

Swi-Tec and Watt&Sea both offer an optional pivoting mount for fitting to a raked stern, while the Remoran has in-built pivoting as standard, using a spring-loaded knob to tab between different settings and offering a rake of up to 40 degrees. Watt&Sea also offers different leg lengths to suit different installations, while the Remoran Wave 3 has a telescopic leg that can be adjusted by over 30cm.

Watt&Sea unit with an optional pivot mounting for attaching to a raked stern

The Seagen and Duo-Gen take a very different approach to mounting, with a flexible yoke providing a single point of attachment. The alternator is attached at this end, while the impeller is at the end of a 1.6m tube which can be fastened out of the water in a vertical position when not in use. ‘It means the units are not rigidly attached to the yacht but are free to pivot,’ explains Eclectic Energy’s Peter Andersen. ‘This de-couples the impeller from the hull movement, reducing stress on the mounting.’

Main propeller regeneration

While a standalone transom-mounted unit is the most common type of hydrogenerator technology, there is another approach – using your main propeller to ‘regenerate’ electricity whilst under sail.

Oceanvolt’s HighPower ServoProp

Fully electric propulsion from the likes of Oceanvolt and Bell Marine has long had this capability built in, as do systems from Torqeedo and ePropulsion. But parallel hybrid systems are also available, where an electric motor is installed alongside the engine to both generate electricity and drive the boat electrically. Lynch Motors in Devon has been supplying its permanent magnet DC motors to the Vendée Globe boats for years, purely as a re-generator, and now produces the flexible Red Snapper motor for cruising yachts.

The only problem with a regeneration system is that the pitch required for the propeller to drive the boat efficiently through the water may not always be the same as the pitch for optimum regeneration. ‘The lift surface on a propeller is on the wrong side for efficient extraction of energy from the water,’ explains Eclectic Energy’s Andersen.

Manufacturers have tackled this in different ways. Oceanvolt has developed its ServoProp for saildrives, which electronically adjusts its pitch depending on speed and function. The latest incarnation allows total 360-degree blade mobility and faces forwards, which increases efficiency, albeit at greater risk of collision damage. At six knots, it produces an astounding 1kW of power.

Bruntons has another solution with the cleverly engineered Autoprop, which automatically pitches up to match the boat speed. Its Ecostar version of the prop can generate 200W at five knots and up to 1kW at 10 knots when connected to an electric motor.

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Hydrogenerators – on test

If you’re planning to go long-distance cruising you’ll most likely be looking to fit one or more forms of power generation to avoid running your propulsion engine.

Thanks to modern alternator designs that offer increased power at lower rpm, hydro-generators are becoming a worthwhile investment for yachtsmen who regularly sail long passages. Yes, they do create a slight drag on the yacht under way, but only around 0.25kt or so, which is unlikely to worry most long-distance cruisers.

How do they work?

A hydro-generator has an impeller (reverse prop) that rotates when towed behind a yacht. That rotation is applied to an alternator, which produces AC power that is rectified to produce a DC charge for your batteries, in a similar way to a shore-powered battery charger.

Early models towed an impeller on a long line behind the boat, which was attached to an alternator on board. But their trailing impellers were often bitten off by large fish and they frequently tangled up when fouled or if not retrieved correctly. Current devices have an impeller attached to a submersible leg – not unlike an outboard motor.

Modern, brushless alternators with magnets have reduced turning resistance and increased efficiency, enabling them to produce more power at lower revs. A hydro-generator is an effective way to provide constant electrical charge over a long distance. On a 40ft yacht one of these can produce around 200Ah of charge every 24 hours at 6kt, which is enough to run most electrical items on board.

They also require little maintenance, other than weed clearance and periodic checking of the electrical connections.

Swi-Tec Hydrocharger

First this HG produced a high current flow, although not stable as it fluctuated considerably between readings. Hence the charge levels in our results table are derived from a mean between lowest and highest reading for each speed. The control box is liable to overheating, as the fan appears to be prone to failure. Our test team felt the box was more complicated than necessary.

• Verdict 6/10

Watt & Sea

We tried the 600W model with the mid-range impeller as that was more compatible with the others on test. Although not as powerful as the Save Marine and Swi-TEC HGs at the lowest and highest speeds, at a typical cruising speed of between 5-6kt the output is strong and, importantly, stable.

We liked the ease of installation and straightforward operation, including the simple ‘plug-and-play’ charge controller.

• Verdict 7/10

The SailGen is easy to mount and, having the heavy alternator at the boat end, is light and easy to deploy and lift. The dive plane idea works well and, though its real-time output is less than others, being always kept at the correct depth means its charge level is far more consistent.

• Verdict 8/10

The output is a bit lower than SailGen’s, which itself is middle of the range in comparison with all the others, but having the 2-in-1 option of a wind generator could be a real bonus for those planning to make long passages then coastal cruise in windy areas such as the Trades.

Save Marine

We liked the lightness and ease of deployment of the Save device, especially the arm that kept the lines tidy and secure. We also thought the turbine design to be innovative, quiet and very efficient. Finally, we loved the idea of the remote monitoring on a smart device, especially as the charge controller is fully automatic so there are no switches to be flicked or audible alarms to listen out for.

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Hydro Generators

Back in 1992, a friend of ours competed in the OSTAR (Observer Single-handed Transatlantic Race). Onboard electrical demands, especially from electronics, had recently grown, and he needed a charging source other than the engine. Marine wind generators were still unproven and solar panels were prohibitively expensive.

A group of us got together and bought for him a towed waterpowered generator for charging his batteries. He came back with good stories of how much electricity it produced—but alas, he lost the boat and generator 500 miles from the finish, so we never got a chance to try it ourselves.

The past decade has brought only greater demand for electrical power. That demand has made wind-powered generators commonplace and solar panel technology far less costly. In addition to the engine’s alternator, these are the most common charging sources for a boat at anchor or underway. However, we rarely hear anything about towed water-powered generators. Always on the prowl for alternative energy sources, we decided to try for ourselves a towed generator on a cruise from the US East Coast to Bermuda and back last summer.

HOW IT WORKS

The technology behind the towed generator is simple to understand. Its principle is very similar to the old Walker Log. As you sail, you tow behind the boat a spinning propeller on a long line that resists twisting. On the boat end of the line is a generator. As the boat moves through the water, the propeller spins, and the twist-resistant line transfers that spinning directly to the generator, which generates electricity. The faster the boat moves through the water, the more electricity is generated.

It’s worth remembering that it’s the movement of the boat through the water that turns the spinner, not the boat’s speed over the bottom. If a boat were anchored in a strong enough current with the towed generator behind, it could generate power. In this way, homesteaders living “off the grid” can make use of waterpowered generators if they live next to a fast-moving stream.

For more information on hydro generators, purchase Marine Electrical Systems, Vol. 4: Alternative Energy . Or, buy the entire Marine Electrical Systems six-part series!

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Reliable electricity

Hydrogenerator for sailboats

Hydrogenerator for sailboats. Keeps you powered during your sailing life!

Read on to find out how Remoran makes your life on-board easier.

Key Benefits

Power without the burn.

If you find yourself running your diesel motor or generator just to top up your batteries, Remoran Wave 3 is the solution for you.

With Remoran, sailing equals free energy. Up to 300 watts at 10 knots* means you'll arrive with batteries full! At the more typical speed of 6 knots* you will already receive 150 watts which is enough to help you avoid burning diesel to charge your batteries.

* Applies to the GS-variant. See below for details.

Unmatched convenience

Remoran Wave 3 requires no pampering. Just let it do it's job and enjoy sailing!

Using Remoran Wave 3 is a breeze. Just slot the outboard unit on the rail, connect the plug and you are ready to go. Remoran Charger 300W will fill your batteries while preventing overcharging. The outboard unit can stay in the water during your whole trip.

Remoran Wave 3 also works in parallel with solar panels and any other charging solutions without problems.

Works with other solutions

Remoran hydrogenerators work when solar and wind let you down.

Solar, wind and hydro are the main Green energy sources for sailors. All have their advantages and disadvantages. Remoran generates power whenever the boat moves, even at night or in cloudy weather unlike solar panels, and even when sailing with the wind, unlike wind turbines.

	Hydro	Solar	Wind
Works	When moving	When sunny	When windy
Doesn't work	Not moving	At night or overcast	No wind or running
Pros	Large power output	No moving parts	Large power output
Cons	Power output related to sailing speed	Requires lots of space	Noisy

-->

	Hydro	Solar	Wind
Sunny, protected anchorage	No	Yes	No
Storm anchorage	No	No	Yes
Sailing (Reaching and Beating)	Yes	Yes*	Yes
Sailing (Running)	Yes	Yes*	No
Night Sailing	Yes	No	Yes**
*As long as there is no shading from sails or sheets
**Unless running with no apparent wind

Suited for all sailboats

The Remoran Wave 3 starts generating electricity at 3 knots, making it suitable for smaller boats and lower speeds.

Optimized for speeds from 3 to 10 knots, even smaller boats will benefit from free energy. Skippers of quicker boats will appreciate our GD-variant with a maximum speed of 20 knots.

The rugged construction, tested both in lab and blue waters, ensures Remoran will handle all the stresses of sailing even at higher speeds.

Quiet operation

Remoran Wave 3's noiseless operation ensures you'll be sailing in comfort.

Quiet operation, together with our advanced Charger, make sure there will be no problems with overcharging, ensuring Remoran Wave 3 can be used during your entire trip.

There is no need to be constantly raising and lowering the generator. Set it and forget it! The quietness of Remoran Wave 3 makes sure you'll not be tempted to turn it off, allowing you to capture 100% of the power available!

• Innovative angle adjustment
• Telescopic blade
• Small but sturdy mounting rail
• Handle for lifting includes snap lock to rail
• Small form factor for easy storage
• 3-bladed turbine for all speeds
• Ergonomic handles

Telescopic design

For easy storage and proper fit for different boats

Angle adjustment

Up to 40 degrees of range, fits most transoms directly without adapters

Handle you Remoran with comfort

Technical details

Length of outboard unit	680 - 980 mm
Weight of outboard unit	7,5 kg
Maximum operation speed	12 or 20 knots
Output voltage	12V/24V (Automatic detection)
Compatible battery technologies	Pb, AGM, Lithium
Warranty	2 years

Sales package

The box contains all that is needed to install your new Remoran Wave 3.

In addition, you'll only need tools and battery cables (DC) of sufficient thickness. Please read the user manual for more details on installation.

• Hydrogenerator outboard unit with 2m cable and female connector
• Three-bladed turbine
• Mounting rail
• Remoran Charger 300W electronic charger
• Generator cable 2m with male connector
• Ferrite filter
• Mounting accessories kit
• User manual

Remoran Charger 300W

Our custom intelligent charger is designed to work perfectly together with our generator. The charger is an essential part of an optimally working Remoran Wave 3 installation. It is always included in our sales package.

• Converts 3-phase AC electricity from the generator to DC voltage suitable for batteries
• Automatic battery voltage detection (12V/24V)
• Smart charging with battery maintenance algorithm
• LED indicators for charging states and error reporting
• Collects information about the charging process viewable using our mobile app
• Bluetooth connection to your mobile device

Product variants

Remoran Wave 3 is offered in two variants, designed for different speed ranges. Please consult the table below.

--> --> -->

Variant name	Generator wiring	Optimal speed range	Maximum speed
Remoran Wave 3GS	star	3-10 knots	12 knots*
Remoran Wave 3GD	delta	5-15 knots	20 knots*
* Charger damage may occur at speeds greater than stated unless is fitted

Charging performance

These charts show the charging performance of both models of Remoran Wave 3.

Note that while the current graphs are different for 12 volt and 24 volt systems, the power output is still the same.

This chart shows expected power output at various speeds for both product variants.

Current @12V

This chart shows expected current output at various speeds when using 12 Volt batteries.

Current @24V

This chart shows expected current output at various speeds when using 24 Volt batteries.

Installation

The installation is easy and straight-forward, and can be summarized by the following picture and a few steps.

Please read the user manual available in our Downloads section for comprehensive installation instructions!

We also have an installation planning service to help you get started.

• Attach the mounting rail onto the transom using two bolts.
• Install the deck connector within reach (2m cable).
• Optional: Install the PR-01 protection relay (accessory) inside the boat.
• Install the Remoran Charger 300W inside the boat.
• Connect generator leads 1,2 and 3 to the charger.
• Connect battery cables to charger. Use the ferrite filter and a 40A circuit breaker (not included) on the red (+) lead.
• Attach the turbine to the generator.

Made in Finland

Remoran Wave 3 is designed and manufactured in Finland. The outboard units are assembled at our own factory in Salo, Finland, from marine-grade components manufactured according to our specifications by various contractors in Finland and China.

The Remoran Charger electronics boards have been designed by us in-house and are manufactured for us by a Finnish electronics manufacturer.

New 2024 Update

We here at Remoran want to provide you with the best product possible. We are constantly improving the product based on your feedback and experiences!

	Some internal components were changed from stainless steel to anodized aluminum, to equalize galvanic potentials between parts.	Starting from S/N U22200085
	In parts that are constantly exposed to salt spray, special plastic bushings were fitted between aluminum parts and stainless steel fasteners. This protects the aluminum parts from localized galvanic corrosion, that could cause visual defects around fasteners.	Starting from S/N U22200100
	To further ensure the protection of submerged parts against galvanic corrosion, we added sacrificial aluminum anode to the product. The anode will protect the product from galvanic currents between different metals, alloys of metals and between different components of the alloys. Note that this cannot be retrofitted to old units by the user. Please ask for maintenance quote if interested.	Starting from S/N U22200120

Certifications

Remoran Wave 3 has received

• International Registered Community Design for it's unique innovative design in USA, EU, Norway, Canada, Switzerland and Australia.
• CE certification for Electrical/RF emissions.
• USA/CAN FCC/ICES certification Electrical/RF emissions.

Where to Buy

Remoran Wave 3 can be purchased from our webshop or from one of our distributors.

Watt&Sea Hydrogenerator

The principle is simple: using the speed of the boat to turn an immersed propeller and produce electricity.

Explore the watt&sea website or contact us to learn more.

In 2015 we became a dealer for Watt&Sea Hydrogenerators for Canada and the USA – and our customers elsewhere in the world. A green product that is very much in line with our high standard of quality and engineering, the Watt&Sea is, like the Hydrovane, of huge value to the offshore cruiser. I can’t wait to mount one on our Hydrovane! – Will Curry

HOT SEAT WITH WILl & RICHARD

10 Reasons to choose Watt&Sea

• High electric output – 24 Amps at 7.5 knots of boat speed
• Negligible drag because of leg and blade shape
• A source of free green power
• No need to run the engine to charge: saving in fuel consumption
• Completely quiet
• Lightweight
• Easy to install, especially with the Hydrovane bracket
• Maintenance-free
• Has a sleek design and look… just like the Hydrovane!
• Designed and manufactured by top racers and engineers in France

Mount the Watt&Sea on your Hydrovane

Install your Watt&Sea in the perfect position – attached onto the Hydrovane shaft.

This unique installation, exclusive to Hydrovane owners, means no extra holes in the transom and allows easy use and removal of the Watt&Sea.

See the Galleries section for photos.

GBP £	EURO €	USD $	CAD $
483	628	652	869

Watt&Sea Frequently Asked Questions

Which model, leg, and propeller size is best for me.

Please email Richard with your boat type, a photo of the transom, average cruising speed, and shipping location. He can provide further information, answer any questions, and send a complete quote.

How does the it integrate into my charging system?

The Watt&Sea comes standard with its own converter and MPPT charge controller to hook directly to your batteries or central bus. The system is plug-and-play and compatible with any existing infrastructure.

What type of batteries can it charge?

The system is compatible with any type of batteries including lead-acid, AGM, and Lithium. If needed, charging and float voltages can be manually set via the Bluetooth app.

What speed loss is to be expected?

Watt&Sea doesn’t have any specific data on the effective drag of the device, or about the speed loss it generates. All immersion and lifting trials at constant speed have not shown any substantial difference on the speedometer for a loaded cruising boat. Testimonials back this up.

Can I replace the propeller?

Yes, replacing the propeller is simple and only requires an allen wrench and an extractor screw.

How should I maintain the device?

Wash down the outside with fresh water from time to time.  The device does not require any specific maintenance.

What is the anti-corrosion treatment?

The aluminum parts are anodized, and coated with paint. They are also electrically insulated from the other metallic parts to prevent electrolytic corrosion.

How reliable is the system?

The Watt&Sea has been designed with the latest technology. All metal parts are made either in specially treated aluminum or in 316 stainless steel.

The generator housing is sealed with hi-tech ceramic-carbon gaskets. These gaskets have a lifetime of several thousands of hours and will painlessly support a circumnavigation.

The housing is filled with a lubricating oil and slightly pressured to prevent any water seepage.

In addition, the alternator is immersed in a resin that encapsulates electrical conductors. Should any dampness occur, the electric parts would not be damaged.

Overall, the system is impeccably designed and built – and is therefore highly reliable.

What power output can I expect?

The power generated increases exponentially as boat speed increases. At 5 knots, the output power is about 120W (or about 10A on a 12V battery) with the 280mm propeller. At 8 knots, the system produces 4 times more power, i.e. 480W (about 40A in 12V ). The output may differ depending on sea conditions.

Contact us to learn more! 

Watt&sea downloads.

• Resellers area

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• Hydrogenerator H240
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--> Hydrogenerator Save Marine H240 for cruising sail boat

Principle of operation of hydrogenerator save marine.

The hydrogenerator Save Marine H240 transforms the energy of water in movement into electrical energy . It works with an inexhaustible energy : the wind, and therefore the force exerted by the water during navigation and preserves the environment. The hydrogenerator Save Marine reloads the batteries of your sailboat and brings electrical autonomy in order to ensure security and comfort on board . The electricity produced by the hydrogenerator is transmitted to batteries through the regulator to get an optimized current/voltage pair for batteries.

The Save Marine H240 hydrogenerator is especially designed for cruising sailboats, to navigate between 2 and 10 knots.

Description of the hydrogenerator

The Save Marine hydrogenerator is a new generation product who encompass some technological innovations patented and leads to several advantages.

The Save Marine Offer is composed of a complete pack comprising:

-           a embedded system of tilt adjustment adaptable to the high majority of sailboats

-           an adaptable and tilting control arm (easy manipulations)

-           embedded tips and pulleys system to ease the launching and rise up of H240

-           an automatic rising system in case of choc with an OFNI

• A home plate  for a discreet fixing of H240 on the boat transom
• A  configurable regulator box
• A pass-hull, with all the cables and connectors
• A monitoring software to real time production monitoring
• A bag for transportation and storage, marine quality

Mecanical and electrical data

Mechanical data sheet

Electrical characteristics of the Save Marine H240 hydrogenerator

Voltage at the output of the regulator : 12 or 24 volts (configurable in the regulator during installation)

Type of batteries : majority of batteries technology are compatible with our solution (lead open, lead closed, lead calcium, AGM, lithium-ion).

The regulator can adapt the production and optimize the batteries charging in function of her capacity (Ah).

Examples of needs couvered by the Save Marine H24 0 Hydrogenerator

Coastal navigation 

The average daily electrical needs are equal to 1100Wh or 90 Ah (with 12V batteries)

• 5 hours of navigation at 7 knots permit at the Save Marine hydrogenerator to cover 100% of the electrical needs
• 8 hours of navigation at 5 knots permit at the Save Marine hydrogenerator to cover 80% of the needs = the totality of the power supply to the refrigerator.

Offshore navigation

The average daily electrical needs are equal to 2900Wh or 245 Ah (with 12V batteries)

• 5 hours of navigation at 7 knots permit at the Save Marine hydrogenerator to cover one third of the electrical needs , for example, more than the refrigerator and water pression post.

The Save Marine hydrogenerator is therefore an optimal solution than can be completed with others solutions of electrical production (as photovoltaic panels).

Documentation

• Hydrogenerator Save Marine H240 for cruising sail boat
• Advantages of Save Marine hydrogenerator during navigation
• Awards obtained for the hydrogenerator Save Marine
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POD 600 Hydrogenerator

Description

The Watt & Sea hydro generator POD 600 is the innovative solution for sailing boats unable to fasten a hydro generator on the transom for either technical, mechanical or aesthetic reasons. Rigorously tested since 2014 by a few privileged sailors, the POD600 has been able to demonstrate its unique attributes.

Invisible No complicated handling up and down Easy start-up Electrical output is the same compared to the Classic 600w models

The POD600 hydro generator has a choice of a 100mm aluminium or composite leg, allowing it to be discreetly fitted under the hull of the boat insuring continuous onboard electrical output with the utmost secrecy.

Delivered as standard with a 240mm diameter propeller (10 Amps at 5.6 knots), the POD600 accepts a range of 4 propellers for speed range from 3 to 20 knots. The output power increases in an exponential way over 6 knots, offering up to an incredible 45 amps, meeting the demands of the current blue water cruising vessel.

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1 document for Watt & Sea POD 600 Hydrogenerator

• POD 600 Manual (1.2MB)

HYBRID AND ELECTRIC MARINE POWER AND PROPULSION SYSTEMS

Zero Emission

No environmental restrictions

No high voltage risk

Remote System Interface

State of the art Lithium Ion battery technology

Safe installation and operation

Instant power output for maneuverability

Zero to full torque in an instant

No waiting for engine rev to settle

No pre-start warning beep

Best quality components available

Patented Technology

Hydro power regeneration

Superior thrust efficiency and energy capture

Remote diagnostics

Low maintenance

System Solutions for a Range of Marine Activity

THE FACTS ABOUT ELECTRIC POWER, BATTERIES AND PROPULSION

Today's electric motor technology has already moved from

the open road to the open ocean.

Instant High Torque

Electric motors are in constant ‘stand by’ mode; you can engage the control lever at any time for instant forward or reverse propulsion.

Electric motors achieve instant torque with Electromotive Force while internal combustion engines need to build RPMs gradually by increasing piston firing frequency.

Hydro Generation

At sailing speeds over 6 knots Oceanvolt systems are able to generate significant power for recharging the battery bank by activating at the touch of a button.

Power regeneration increases exponentially with each additional knot of speed.

Lithium Ion batteries are superior to other battery storage technology; highest storage capacity, high effective current delivery, high charge capacity resiliency and wide temperature range performance. In today's digital age, where everything is just a click away, 1xbet mobile takes a significant chunk of the online casino services sector. Starting as an online casino service in 2007, 1xBet expanded its services in 2014 to include sports betting. Fast forward to 2018, and they marked their entry into the Indian market. Their app and website, designed in a calming blue and white hue, are not just a treat for the eyes but are also super intuitive. With a support interface that covers 50 languages, including Hindi, the platform ensures that language is no barrier to placing your bet.

Oceanvolt highly skilled technical team ensures proper installation and system-optimization.  Only the highest quality Li-Ion batteries are used - to ensure performance and safety.

For those interested in a hybrid solution, generators are a highly efficient way to extend range while at sea.

DC generators have the advantage of rapid recharging capability.

AC generators are, generally, smaller and even portable which means that the generator can be aboard only in situations where longer motoring might be required.

Battery recharging is accomplished with shore connection, hydro generation (an integrated part of all Oceanvolt systems) and/or solar panels.

In Hybrid solutions , a generator (either AC or DC) can be used to recharge batteries / extend motoring range.

Integrated components

It is essential that all system components are properly selected and installed.

Our team of highly skilled technicians ensure that all components are compatible and that system management software is optimized.

Oceanvolt blog

Oceanvolt’s upcoming boat show appearances

WHITEPAPER: HYDROGENERATION

WHITEPAPER: HORSEPOWER VS KILOWATT

Owner testimonials.

Electric Beneteau Oceanis 40.1 “Moritz”

Maxi Dolphin MD55

RM Yachts RM 1180

Power Board

• Technische Daten
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• Technical Data

TECHNICAL DATA

The Innovative Hydrogenerator

The hydrogenerator for sailingboats is based on the OceanPower's patented concept   (No. 10 2017 100 485) of omitting components that tend to break:

• no dynamic seal
• no oil filling
• therefore no maintenance!

Get the OceanPower hydrogenerator (incl. Controller) for already 2.270 € * (* Basic Version, incl. german tax)

NEW: light and friction-free mounting base The hydrogenerator glides on a detachable rail:

The OceanPower advantages for you:

• generator runs nearly frictionless , therefore the power of the propeller is transmitted to the battery with very high efficiency ,
• no dynamic seals means a minimum of wear and no maintenance .

The housing of this hydrogenerator is only 63 mm in diameter and therefore extremely slim !

The    design of the efficient and silent propeller has been geared to ti dal power plants .

Further features:

• available for 12V and 24V
• robust cable (min. 5m long)
• waterproof controller (bluetooth connection coming soon)
• different propeller designs (made of carbon fibre) available for different speed ranges
• easy to move up and down even during (fast) sailing (see video below) - no need to slow down the boat
• starts charging at 3kts
• easy to mount and dismantle
• compatible with every stern

Easy To Use

Available For Different Types Of Sterns

Please click on one of the icons below to see a PICTURE GALLERY of the corresponding stern type.

Ocean Power

Truely the best concept of a hydro generator.

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Noiseless, highly efficient hydro-generator from Watt & Sea

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Thanks watt&sea .

Yannick Bestaven / Maître CoQ IV

Vendée Globe 2020

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