Electric Motors For Sailboats

Electric Motor Replacements for Diesel Engines up to 30 HP

Since 2020, Newport Electric Boats has been making electric propulsion systems that are practical and affordable, and ideal for sailboats.

They are totally clean, simple to install, and have battery options for day sailing, weekend cruising, and longer journeys. Our cockpit computer provides you with a detailed status of the system, so you're always up to date with power usage, and remaining run-time estimates.

Our warranty covers everything we sell, and we know that your success is our success.

Key features of our inboard electric motors:

Electric Inboard Motor

Safety and ease of installation are two key features of our system.

The motor fits into sailboats in the exact same space as the original diesel. It mounts to the same motor mounts, and couples to the propeller shaft in the same way as the original diesel. This simplifies the installation and is familiar to anyone accustomed to working with boats.

Our entire system has been designed specifically to provide a straightforward path for migrating sailboats that were originally equipped with a diesel engine between 20 to 30 HP, to transition to electric propulsion.

All Newport systems use "safe to touch" battery voltages. 

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

We use an AC induction motor to maximize energy efficiency. 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


Advantages of Electric Propulsion for Sailboats

What are of the main advantages of electric motors in sailboats? Electric motors in sailboats offer several advantages, including: 1. improved efficiency 2. silent operation 3. ease of use 4. low maintenance 5. improved maneuverability 6. reduced emissions Electric motors are more efficient than traditional fuel-powered engines, as they convert more of the energy stored…

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battery layout options in pack design

Considering Tesla’s 4680 Gen-2 Cell in a Low-Voltage Battery Pack for Sailboats

Figure 1 – TESLA 4680 and CAM72 Cell Arrangements in a “48V” Pack After Tesla’s internal needs are being met for its new 4680 battery cells, they will begin offering these cells to other OEMs, who will develop new battery packs and incorporate them into their own products. This is interesting to me since my…

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Lithium LiFePO4 vs Lead-Acid Battery Packs, for Propulsion of Electric Sailboats

The question comes up sometimes, when people are considering various battery options for electric propulsion on their sailboat. There is a ton on quality information out there about the pros and cons of Lithium batteries vs their heavier and more expensive predecessor, Lead-Acid batteries.  However, much less is said about the topic when considering batteries…

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