FREQUENTLY ASKED
QUESTIONS

Below you will find the questions we get the most. If you don’t see what’s on your mind, be sure to reach out to us via ahoy@evoy.no.

GENERAL

Evoy comes from the term Electric Voyage. A voyage is by definition: “A long journey involving travel by sea or in space”. Evoy will focus on sea travel first, then ocean space later.

A boat, in Evoy’s view is between 0 and 15 meters or 0 and 50 feet. Our system is best suited to inboard planing hull boats between 20 and 30 feet. The reason is that size affects energy consumption, at the same time as having fairly heavy ICE systems installed. However, when removing an ICE system either in real life or during planning for new boats, this will free up a lot of weight that can be used for the electric propulsion system. Since the motor and converter typically only weigh between 100 and 200 kg (depending on specification on the boat) that again means there is a lot of room for the batteries, which can give an acceptable range for most. 

Silence, zero emissions, and low operating costs are the core benefits of an electric propulsion system. Evoy's system will not compromise your current boat usage, using your boat how, when, and where you want. The use of a lightweight electric motor, efficient battery management, and maritime batteries make this possible.

Electric propulsions systems are highly reliable. The reason for this is the simplicity of an electric motor linked to our marine electric management system. Simply put, our system has four moving parts, whilst on average a combustion engine has over 2000 parts. This explains how Evoy can achieve a highly reliable and robust system.

Unlike ICE, the full torque of an electric motor can be available from 0 rpm (depending on your programming choices). Thus an electric propulsion system allows you to achieve a plane with your boat more efficiently and faster.

This is fully dependent on the boat and how big a system is installed. As a general rule, you can expect a higher top speed than with your current ICE installation.

This is fully dependent on the boat and the size of the system that you put in it. However, with today’s battery technology you can expect between 25 to 50 nautical miles at a planing hull speed. At a slower speed, below hull speed (approximately 5 knots for a 25-footer), this range can be quadrupled.

ICE stands for an Internal Combustion Engine. The majority of marine inboard and outboard engines are ICE.

PRODUCT INFO

Evoy’s standardised turn-key system can be used in both new and used boats.

We have regional partners for retrofitting. Contact us for more information. 

Evoy’s computerised engine controller can be set with parameters that match the stern drive’s torque ratings. Retaining the existing propeller is most likely an option, as the computerised engine controller and electric motor can be selected to match rpm and torque. However, changing the propeller may be desirable in order to achieve increased operational efficiency. In a retrofit, we will usually recommend that the stern drive is changed at the same time as the propulsion system. The main reason is that when an ICE goes in gear, it connects at 600 – 1000 rpm which can be really hard on the stern drive. This is avoided with an electric drive, as it can connect to the stern drive at 0 rpm. We recommend you start with a “clean sheet”, by replacing your stern drive, so you do not have any unpleasant surprises.

You can add solar panels to your boat and integrate them with our system. However, the limited surface area on a boat, plus the additional weight of the panels may reduce the effectiveness of adding solar panels. Therefore, for optimal speed and range, we recommend that people use land based charing stations instead of onboard solar system installation, but this depends hugely on the boat. For fast boats, this usually holds true with today’s technology and infrastructure.

Autonomy is commonly divided into 4 or 5 steps. At “Entry Level“ a system allows you to follow a route that is plotted on your navigation aid, wither manually or automatically (auto-routing), whilst requiring the navigator to constantly monitor the system. However, with “Full Autonomy" (Stage 4 or 5) you and your boat can travel from A to B without the need of human interaction, even included docking. This is where Evoy will be with time.

PURCHASING

You can now able to design your own system and reserve or pre-order in our configurator

We are aiming to have the first deliveries in Q3 2020. Once you have signed your purchase order it will be about 6 months delivery time. See our regional partners and boat builders listed here.

This is very dependent on the system that is ordered, and particularly the size of the battery system, as batteries are the most costly part for now. For commercial users their bay-back time is around 5 years, but depends hugely on how much the system is used.

We are looking at international sales and dealership partnerships. Many of our current suppliers and boat makers offer their products internationally. With time, we too will be across the globe.

MOTOR

1hp = 0.74kW. Evoy offers 100-671kW systems meaning 135-900hp

Our system has been designed for commercial use. We have de-rated our system to continuous power. 

BATTERY

At Evoy we have thought carefully about how to maximise range. Our range rings on our display unit and our energy management system, allows you to understand your speed and power constantly. This ensures that with a slight speed adjustment, you can get to where you want to go. As a rule of thumb, you quadruple your range if you reduce from a plane hull speed to below 5 knots.

Our batteries have been rated for 14000 cycles when used to 80% depth of discharge (original capacity of the battery). 

Evoy has developed a range of different charging options. Our standard AC Charging system can charge with about 22 kW (a 100kWh battery) in about 4 hours if there is an AC outlet big enough to support the onboard charger. There is an optional upgrade to 44 kW charging in about 2 hours. Our DC supercharging 300kW system can be charged in less than 30 minutes.

ENVIRONMENT

When you run an electric motor you produce no emissions. However, the energy that is used by a motor can and may have an emissions footprint, depending on where the electricity comes from. If you are interested in knowing more about your energy footprint we recommend contacting your local  authorities about energy generation emissions or take a look at this info map. At Evoy we believe that by moving the maritime transport sector to electric, we can position the maritime industry for a low carbon future.

Evoy has spent significant time and resources in evaluating battery suppliers that manufacture sustainably. DNV-GL approved meet strict environmental requirements.

 

Evoy has also gone one step further and decided to use Chooose to carbon offset all other aspects of our business and production. Read more about Chooose.

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