+33(0)4 93 00 03 39
Drakkar – Bât C
2405, route des Dolines – CS10065-06902 Sophia-Antipolis Cedex FRANCE


For each boat configuration, STR Europe assists you in developing a set of detailed specifications that meet your personal and operational needs for electric motors, lithium batteries and solar panels in order to offer you the most comprehensive and most suitable solution for your project. The services of STR Europe can include a customization of your electric propulsion system and an assistance and training for the installation of your electric or hybrid propulsion and its components.

Here, all our Electric Motors (prices in euros, without VAT and shipping)

Please fill the contact form here if you are interested in these technologies.

The QuietTorque™ 20.0 is recommended for boats up to 42’ (LOA) and 10 t displacement.

Typically replacing diesel engines in the 30-45 hp range. Typical battery size is 400  Ah or more at 48Vdc.                                                


Motor type              2 PMAC* Brushless

Voltage                   48 Vdc (nom)

Current                   400A

Max power input      20.0 kW

Cont. Input Power    17.0 kW

Shaft size               20 to 38 mm stainless steel

Weight                    61 kg

Frame                     Anodized Aluminum

*Permanent Magnet Alternating Current


Standard Features

Motor Mounts          Adjustable Mounts to current engine stringers

Throttle                   Anodized Al waterproof throttle with key & neutral lock

System Monitor       High capacity programmable monitor

  • State of charge
  • Voltage Current draw RPM battery type
  • Instant and accurate
  • Distance to discharge
  • Programmable regeneration
  • Program throttle forward / reverse and throw

Shaft coupler          Standard 4” flange

Power Switch          Blue Sea two position switch

Relay                      500amp vacuum Tyco relay

Fuse                       Class-t fuse & holder


The QuietTorque™ 20.0 is very complete and includes everything you will need except batteries battery cables and charger. Contact us directly and we will help you design a complete system to meet your particular needs.

Electric Yacht QuietTorque 20.0 product Data sheet

Inboard Motor

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