Engine Mounts
Isoflex polymer isolation mounts control vibration while maintaining load-carrying stability, reducing transmitted noise, component fatigue, and maintenance stress.
Propulsion systems
Electrifying Your Inboard Propulsion
NT Systems is a compact turnkey electric propulsion system for commercial and leisure applications with a continuous power range from 40 kW up to 450 kW. Our electric propulsion systems are designed for easy service, low maintenance, and straightforward installation on various marine drive units.
Request a Quote
Share your vessel type, target power, or project stage and we can help define the right setup.
What makes setup easier
- Power, communication, and water connections only
- Built-in cooling and control systems
- Direct-drive or gearbox-ready configuration
Compact and light
Powerful
Plug&Play
Modular and scalable
Why Choose NT Systems?
A key advantage of our systems is optimized operation for maximum efficiency. This is achieved through a combination of right-sized components, optimized cooling for stable operating temperature, and an in-house developed Electronic Control Unit (ECU) that manages the system for reliable performance.
The pre-assembled, single-unit design minimizes installation time and supports proper component configuration from the start. That makes the system especially useful for projects where space and weight matter, without compromising propulsion performance.
Best fit
An option for retrofit work, new builds, and installations where compact system design and simplified commissioning matter.
Configuration options
Direct Drive or Gearbox Version
Our systems feature a built-in thrust bearing, allowing for direct shaft mounting and direct-drive use out of the box. For applications that need different output RPM and torque, the same system is also compatible with various marine gearboxes.
Multiple-motor support
The design also supports multiple-motor installations, increasing total propulsion power for more demanding applications. A quadruple setup can provide up to 1800 kW (2400 HP), or more if necessary.
In-Depth Look
Direct Drive and Gearbox Assemblies
Explore a detailed breakdown of the system's components and their assembly, including a closer look at gearbox mounting.
Pre-assembled propulsion unit includes:
- Electric motor with built-in thrust bearing
- Motor controller / inverter
- Electronic Control Unit (ECU)
- Electrical and water plugs
- Cooling system with heat exchangers, pumps, water strainer, and flow-through expansion tank
- Frame and engine mounts
Through this 3D animation, you'll discover:
- 360-degree view of the propulsion unit
- Close-up views of key components
- Component assembly in exploded view
- Gearbox version, components, and mounting logic
Vibration isolation
Isoflex mounts and driveline coupling support
NT Systems propulsion units already include prepared mounting points and Isoflex engine mounts. Isoflex products are well known for their performance and longevity, thanks to their resistance to fuels, oils, and water. Flexible gearbox couplings are also available and can be specified according to the project's driveline configuration.
Gearbox Couplings
Flexible gearbox couplings help absorb driveline misalignment and protect bearings and gearbox components in demanding marine installations.
Official EU distributor
NT Systems partnered with Isoflex Technologies, a leading manufacturer of marine and industrial vibration isolation products, to become the official EU distributor. We support product selection for propulsion projects, refits, and standalone marine or industrial applications.
Visit Isoflex EU distribution siteAvailable models and technical specifications
The NT Systems propulsion range covers continuous power outputs from 40 kW to 450 kW, with key performance and dimensions figures shown below.
Tip: Select a model in the table header to easily see its specifications.
 |  |  |  |  |  |  | |
|---|---|---|---|---|---|---|---|
| Model | C40 | C80 | C120 | C160 | C220 | C320 | C450 |
| Power [kW] (continuous) | 40 | 80 | 120 | 160 | 220 | 320 | 450 |
| Power [kW] (peak) | 60 | 120 | 180 | 240 | 330 | 480 | 660 |
| Torque [Nm] (continuous) | 119 | 238 | 356 | 477 | 525 | 954 | 1050 |
| Torque [Nm] (peak) | 179 | 336 | 536 | 715 | 787 | 1430 | 1574 |
| Motor nominal speed [RPM] | 3200 | 4000 | 3200 | 4000 | |||
| Battery [Vdc] | 400 | 700 | |||||
| Total Length [mm] (assembled*) | 528 | 690 | 888 | 1017 | |||
| Total Weight [kg] (dry, assembled*) | 64 | 71 | 95 | 104 | 124 | 195 | 240 |
*Propulsion system is pre-assembled and includes: electric motor, motor controller, ECU, complete cooling system, electrical and water plugs, and engine mounts.
How to choose your model
Model selection is based on power target, vessel profile, and installation concept.
- Required continuous power and duty cycle
- Vessel profile, target speed, and operational use
- Available installation space
- Target propeller-shaft RPM and matching direct drive or gearbox setup
FAQ
Propulsion system planning
Practical answers about configuration, installation scope, and system integration around the propulsion unit.
Is the propulsion system intended only for specific vessel types?
No. NT Systems propulsion can be integrated in leisure and professional applications, for both slow and fast boats using direct-drive or gearbox-based versions, and for both retrofit and newbuild projects, depending on vessel requirements and available space.
How early should we involve NT Systems in a project?
Early involvement is strongly recommended, especially for retrofit packaging and cooling planning. Earlier alignment usually shortens integration time and reduces redesign risk.
What is included in the pre-assembled propulsion unit?
It includes an electric motor with a built-in thrust bearing, motor controller/inverter, electronic control unit (ECU), cooling system with heat exchangers, pumps, water strainer, and flow-through expansion tank, electrical and water connectors, frame, and Isoflex engine mounts.
How do I choose the right propulsion model?
Selection is based on required continuous power, vessel displacement and hull behavior, duty cycle, available installation space, cooling concept, and target propeller-shaft RPM (which defines direct drive or gearbox configuration).
Can the system be configured as direct drive or with a gearbox?
The propulsion range supports both direct-drive and gearbox-based configurations. Read “How do I choose the right propulsion model?” to learn what defines the right model for your vessel.
Do you support multiple-motor installations?
Yes. Multiple-motor configurations are supported to scale total propulsion power. Depending on setup, quadruple installations can reach around 1800 kW (2400 HP) or more.
Do you support safety lanyard (kill switch) integration?
Yes. Safety lanyard is included in the system and is integrated with every motor. The safety lanyard function can be activated and used where required, and is strongly recommended for vessel profiles where immediate propulsion shutdown is an important safety requirement.
What battery options are possible?
We can provide different battery types, including type-approved options where required. If preferred, we can also integrate client-selected batteries, provided that battery data, BMS communication details, and protection requirements are available to us.
What should be checked during lay-up or winterization?
Depending on the cooling system configuration, the vessel may be operated throughout the year or may require winterization during longer periods of non-use or low-temperature conditions. In such cases, the external cooling circuit should be flushed and protected with the correct coolant/antifreeze mixture according to the service guidance.
Looking for answers about another product or service?
Browse full FAQProjects
Selected propulsion integrations
MARIAN EVO 700 - Electric Wakesurf Boat
Full electrical engineering by NT Systems, built around our C220 propulsion system, side-mount throttle lever, and multifunction display.
Learn moreABT | MARIAN M800-R Electric Sports Boat
Full electrical engineering by NT Systems, built around our C320 propulsion system, side-mount throttle lever, and multifunction display.
Learn moreSee the NT Systems C80 electric propulsion system come to life on MARIAN Laguna 760 boat!
This video takes you behind the scenes to see the delivery, installation, and sea trial of the propulsion, along with the installation of the side-mount throttle lever, display, electrical engineering, and battery/charger integration.
Learn moreElectrifying the Classic Pedrazzini Wooden Boat
This project features the integration of the NT Systems C160 propulsion system and our top-mount throttle lever.
Learn more