ePropulsion Navy Evo 6.0 Electric Outboard

The Navy 6.0 Evo is ePropulsion’s most powerful electric outboard engine, ideal for motorboats, yachts, RIBs and workboats up to 6 tonnes

9.9HP Ultra-Low Closed-Loop
Equivalent Propulsive Power Maintenance Liquid Cooling

The Navy 6.0 Evo is the option when you need a boost for your boat. Featuring an advanced cooling system usually equipped on only the wildest outboard beasts – Its ready for any water challenge.

Boasts incredible features – Maintenance-free and remarkably quiet. Working with ePropulsion’s exclusive Navy battery it delivers great performance and it also offers the convenience of the max battery parallel connection, which is up to a total of 8 battery packs for extended range.

Performance – Ready for Tough Tasks 

Efficiency 9.9 HP 27 KM/H
Up to 57% max overall efficiency For motorboats and sailboat up to 6 tonnes Max speed to drive a 12 ft boat with 150 kg load

The ePropulsion Navy 6.0 is the right choice for when you need a powerful electric outboard motor. The 6kW motor can remain at the max output for hours. It’s sure to impress with its great performance!

Incredibly Versatile

The impressive performance makes the Navy 6.0 outboard motor extremely versatility suitable for all types of environments

Aluminium Boat Transportation Boat Sailboat RIB Pontoon
River City Canal Marina Inshore Lake

Incredible Efficiency

ePropulsion Navy 3.0 has incredible efficiency up to 57%. Its 6kW electric motor can deliver the propulsive power equivalent of a 9.9HP petrol engine

  ePropulsion Navy 6.0 9.9HP Petrol Outboard
Input Power 6 kW N/A
Output Power N/A 7.5 kW / 9.9 hp
Maximum Overall Efficiency 57% 31%
Maximum Effective Power at Propeller 3.1 kW 2.4 kW


1 Hour 40KM 8 Packs
Running time at full speed with two batteries Range at economical speed with two battery Max parallel connection allowed for ePropulsion Navy Battery

The range is a big challenge for any electric drive system. ePropulsion push the range limit through propeller design, smart battery management, terrific battery capacity in a compact size, motor housing CFD, and more.

Performance Table

(knph / knot)

Range (km / nm) Running Time (hours)
Slow Speed 7.2 / 3.9 72 / 39 10
Economical Speed 10.2 / 5.5 40.8 / 22 4
Full Speed 27 / 14.6 27 / 14.6 1

* ePropulsion Navy 6.0 outboard with 2 x Navy batteries. Motorboat and sailboat up to 6 tons.
** The performance data is based on a 12-foot aluminium boat with one ePropulsion Navy 6.0 and 2 x Navy batteries. The actual speed, range and running time may vary because of different boats, load, weather, etc.

Battery – Long-Lasting for Every Trip

Advanced BMS 3042 Wh Aluminium Unibody Housing
Safety comes first: includes six protection features Terrific capacity in a compact size Robust and extremely thermally conductive

The ePropulsion Navy battery is more than the outstanding capacity. It’s designed specifically for our Navy series and it is capable of discharging at maximum current for hours. It also looks good and performs even better.

Carefully Designed Battery Components

Each Navy battery contains a huge 31,218,650 cells in total. To best optimize performance and thermal dissipation a sophisticated battery array was designed to create a large capacity in a compact size.


  1. Communication Port
    The BMS controller reads the real-time battery status from this port and implements the best control strategy for performance. Each Navy battery has two for parallel connection
  2. Handle
    Two ergonomically designed handles are incorporated to enable safe carrying of the battery
  3. Power Switch
    Switch between sleep and working mode – Helping to preserve battery life
  4. Aluminium Unibody Sealed Housing
    Excelling at thermal dissipation and designed for long term saltwater environment protection includes an air vent located on the top of the housing to balance pressure

Closed-loop Liquid Cooling

The Navy 6.0 is the first ever outboard electric motor in mass production that is equipped with a closed-loop liquid cooling system which is usually found in those horsepower beasts.

Excellent Cooling

The motor stays at a safe temperature in any tough working conditions


A closed cooling system doesn’t require water intake, and so the entire cooling cycle stays within a closed circulation, meaning it’s more reliable


Robust Design Built to Last

Maintenance-Free 2,000 hrs in Testing Direct Drive
Save time at work and spend more time on the water The most rigorous testing of continuous operation ensures a robust design The amount of moving parts is reduced tremendously, including gear box

The ePropulsion Navy 6.0 is a maintenance-free electric outboard motor. You’ll never need to worry about repairing or maintaining it. The quality and craftsmanship are second to none so you can relax and enjoy your time on the water!


Harmless to Health and Environment

No Fuel to Leak Exhaust-Free Less Carbon Emissions
Leakage is quite common with a petrol outboard – not with the Navy 6.0 You won’t breathe in any engine exhaust fumes Reduce your carbon emissions and protect the environment

ePropulsion is committed to providing a green boating drive system helping to alleviate the environmental problems we face today.

Keep Your Hands and Clothes Clean

Annoyed by the oil stain on your shirts or hands? ePropulsion Navy 6.0 leaves no oil stain at all.

Entirely Avoid Exhaust Inhalation

There is no combustion so there is no way that you will inhale any toxic exhaust fumes that you get from a conventional petrol combustion outboard engine.

100% Exhaust Free – ePropulsion provides you with a 100% exhaust and emission free boating experience

ePropulsion Navy 6.0 Specs

Input Power Running Time (Economical Speed)
6 kW 4 Hours
Equivalent Horsepower Running Time (Full Speed)
9.9 Hp 1 Hour
Motor Weight (Long Shaft) Shaft Length (Long Shaft)
31.1 Kg 76.5 cm
Motor Weight (Short Shaft) Shaft Length (Short Shaft)
30.5 Kg 64 cm
Battery Weight Warranty
31.5 kg 2 years, basic motor

1 year, battery

(non-commercial use)

Battery Capacity Minimum Battery Quantity
3042 Wh 2


  • Kill stop switch
  • IP67 ingress protection
  • Propeller collision emergency stop
  • Reinforced transom mounting
  • Low battery indicator
  • Over temperature protection


  • Lithium-ion polymer battery
  • 46.8 V nominal voltage
  • 54.6 V final charging voltage
  • 39 V cut-off voltage
  • 0°C – 40°C charging temperature
  • -20°C – 65°C discharging temperature
  • Over 80% capacity after 500 cycles of 100% DOD
  • 3 hr charging time (Fast charger)
  • Battery management system


  • Integrated display
  • Wired remote control available


  • Rated RPM 1550
  • 1288 N / 289.5 lbs static thrust
  • 57% overall efficiency
  • Water cooling
  • Direct drive
  • Field-oriented motor control
  • Trim angles including 0°, 5°, 10° & 15°
  • Tilt angle 60°
  • 32 × 27.4 cm / 12.6 × 10.8 inches high pitch propeller
  • 34 x 21.6 cm / 13.4 x 8.5 inches low pitch propeller
  • 360° tiller steering, direction lockable

To Order your new ePropulsion Electric Engine and check on lead times or for further information please contact Ashton Marine Services on 07595 638185 or click here to send us a message

We are open 7 days a week and most Bank Holidays between 8am and 8pm

£2,850.00 inc. VAT
£2,900.00 inc. VAT