Electric Propulsion Systems For Sailboats

Electric Motor Replacements for Diesel Engines up to 30 HP


Our Electric Motors are a Drop-in Replacement for Diesel.  They fit in the Engine Bed and Couple to the Prop in the same way as the Original Diesel.  

The two pictures to the right show a model overlay of a 20 HP diesel engine and our 34 HP (25 kW) electric motor.  Our electric motors entirely entirely within the envelope of a 20 HP (and also the 30 HP) diesel motor.

This provides a clear illustration of why you can be confident that when you use our electric motors, they will fit, without obstruction. 

Every installation is a little different, and we've got mounting adjustments to help make the process smooth.  Our shaft length can adjust, and motor mount positions can also adjust easily, to help during the install process.  Our motor assembly has been carefully designed to help make repowering a straightforward process.  

Contact us today, and let's discuss your particular conversion.

Electric Inboard Sailboat Motor

Safety and ease of installation are two of the most important features of our system.

All Newport systems use 48 volts. This makes them "touch safe" and makes installation easier.  We offer a suite of Victron Energy components, that complement our products very well. This allow us to test and integrate a wide variety of chargers, inverters, displays, monitors, and the like. 

In addition to this, we offer a cockpit computer that provides a continuous display of the electric propulsion system, including battery state of charge, motor RPM, power used, temperatures, speed, heading, and other information. 

Two motor sizes are currently available, the NEB-15 and the NEB-25 (20 HP and 34 HP respectively).

We currently offer two sizes of LiFePO4 battery packs, with other options in the product pipeline.   Our systems are designed to last, and we know your success is our success, and we're here to help you every step of the way.

Our Standard Package Includes Everything Needed for a Typical Conversion:

  • The Motor assembly NEB-15 or NEB-25 ( 20 HP or 34 HP) with mounting hardware to the hull, and shaft coupler to couple to the propeller shaft
  • Cockpit Computer with a 10.1" waterproof, touch-screen display, system wiring, marine breakers, throttle knob and key switch.
  • Battery pack (Lithium-ion, LiFePO4). Sizes range; the standard is 10Kwh with an integrated battery management system (BMS).
  • An LFP battery charger
  • Product documentation
  • Example installation plan with layout and wiring diagrams
  • Customer support via phone and email
Touchscreen cockpit computer for electric sailboat system monitoring

Power efficiency and performance are two other key features of our system.

We use an AC induction motor to maximize energy use. Our motor incorporates a specialized gearbox engineered to provide safe and reliable torque conversion between the motor and propeller. This allows the electric motor to run at optimal speeds while keeping the propeller in the RPM range best suited for pushing the boat.

The battery pack BMS, the motor controller, and the battery charger all communicate to a dedicated display. Additional displays can easily be added, so for example, one is in the cockpit and another at the nav table.

Among other things, the display will always show:

  • Time To Discharge (TTD)
  • Motor RPM
  • Battery State of Charge (SoC)
  • Current (amps) in/out of the battery pack
  • Temperatures: motor, controller, battery