Frequently Asked Questions

Q: How much is the sailing speed affected?

The sailing speed reduction is roughly 0.2 knots during charging. This applies when the boat is moving at less than hull speed, and is dependent on many other factors such as boat size and speed.

Once hull speed is reached, the hydrogenerator's effect won't be noticeable. Also once the batteries are full or the generator cable has been disconnected the sailing speed reduction will be less than at full charging mode.

Q: Can the hydrogenerator be in the water while motoring?

The hydrogenerator will not be affected and can be kept in the water while motoring. The charger will detect the higher voltage from the motor's generator, assuming they are connected to the same battery, and go into idle mode while motoring. Remoran Wave 3 will resume charging once sailing continues.

Q: Why does Remoran need to know my boat's maximum speed?

We want to ensure you receive the correct variant of Remoran Wave 3 for your boat.

We are currently offering two variants

  • GS variant 3-10 knots (Max 12 knots)
  • GD variant 5-15 knots (Max 20 knots)

The difference is that the 3-10 knots variant is slightly better at producing electricity at lower speeds. However the maximum speed of 12 knots may not be exceeded or the charger can be damaged. For boats that routinely reach or exceed 12 knots, the Protection Relay PR-01 should be fitted with the GS variant, or the faster GD variant should be used.

Q: The outboard unit seems to have plastic construction, will it break?

Actually all load-bearing mechanisms are made of metal. Some plastic-looking components such as the curved angle adjustment guide contain a strong integrated metal core. The only exception is the angle adjustment teeth of the curved angle guide, which are designed to be breakable in the event of collision with an unknown floating object, to protect the boat and other components.

For more details, please see the downloadable mechanical testing paper in our Downloads section:

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Q: Will reversing while motoring harm Remoran Wave 3?

No. The sturdy metal-on-metal construction can handle the stresses of backing up.

Q: Does the hydrogenerator also work as an electric motor?

No. It is designed only for generating electricity for sailboats.

Q: Will Remoran Wave 3 overcharge my batteries?

No. The Remoran Charger 300W is a smart charger and uses algorithms optimized for Lead-Acid (incl. AGM) or Lithium batteries. The charger algorithm ensures your batteries will be optimally charged without any adverse effects. Once the battery is full, the charger will go into idle or floating mode.

Q: Can the Remoran Wave 3 be raised out from or lowered into water during sailing?

No. The Wave 3 is intended to remain in the water during the trip, and can only be raised or lowered when the boat has stopped.

In normal day-to-day use there is no reason to lift the outboard unit from the water. For example:

  • Once batteries are full, Remoran Charger 300W will prevent overcharging by going into idle mode.
  • Any speed loss is negligible.
  • Removing seaweed (e.g. Sargasso weed) is possible by using a deck brush/broom.

We realize that many sailors nevertheless will prefer to be able to easily lift the outboard unit during sailing, and are getting ready to offer a solution in the near future. Meanwhile, custom mounting solutions can be constructed using for example standard sailboat rail components.

Q: I have heard that Remoran Wave 3 is noisy when producing electricity?

Our test and early production models did have noise problems and we have worked hard to reduce them. We have made mechanical improvements to the product and have been succesfull in reducing the noise.

Current models are extremely quiet, something we are very proud of and worked hard to achieve. Following the installation guide will further ensure quiet operation.

Since the experience can be highly subjective, we offer customers the option to return the product for a full refund.

Q: How tight should the turbine (i.e. impeller, propeller) be tightened?

There is a certain amount of flex when tightening the turbine and it is sometimes possible to overtighten it so it will almost touch the generator cap. To avoid overtightening make sure that the gap between the turbine and the generator housing remains 2-3mm wide once tightened.

Note: This ony happen when using a 30mm long turbine bolt shipped with early models. Currently Remoran Wave 3 ships with a 35mm long turbine bolt that does not have this problem.

Q: Is it absolutely mandatory to place the charger horizontally (landscape) or can we also place it vertically (portrait)?

Yes, correct airflow is important so landscape mounting with 20cm free space above is essential.

Q: Is the feedthrough connector waterproof to seawater also or only raindrops? Can it be installed in a place where waves can reach it or does it requires to be above waves in all cases ?

We recommend above waves mounting but it will handle occasional immersion too.

Q: Is it safe to disconnect or connect the feedthrough connector even under motion (hydrogenerator running)?

Yes the connector may be connected or disconnected at any time without problems, as long as the metal surfaces remain dry.

Q: Is the charger protected against electric issues such as wrong wiring or shortcut ?

The battery plus/minus leads must be connected correctly or there will be damage. Otherwise it’s ok. The charger has short circuit and broken generator lead detection and will inform the user via LEDs and Remoran App.

Q: Does the charger accept to be set up in parallel as other chargers (solar MPPT…) ?

Yes there can be multiple chargers connected to the same battery and Remoran Charger will go to idle mode if another charger such as the diesel motor produces higher volts.

Q: Is the generator floating or sinking in case the user drops it in water by mistake ?

The outboard unit weights 8kg so it will sink. We recommend safety rope.

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