New Stream 25kW Inboard Electric Boat Motor
NS-INB-25New Stream's 25 kW inboard electric boat motor is an eco-friendly, efficient and durable propulsion system designed for commercial and private boats. Delivering high on-water performance with zero emissions and silent operation, it offers pioneering technology for a sustainable future. Discover innovative solutions in the marine sector with Nawis Marine.
Key Features
The core features that make the New Stream NS-INB-25 25kW inboard electric boat motor special
High-Performance Power
Zero Emission
Silent Operation
Low Maintenance
Easy Integration
Linear Battery Consumption
Advanced Energy Control
Smart Boat Automation
Smart Cruise Automation
Long-Range Capability
Remote Monitoring
Project-Specific Efficiency Checks
Project-Specific Propeller Design
Technical Specifications
Detailed technical information and features
| Model | NEW STREAM 25 kW |
|---|---|
| Mounting Method | InBoard |
| Operating Voltage (V) | 87.6 V – 102.2 V |
| Current Values (A) | 0-285 A – 0-244 A |
| Maximum Torque (Nm) | 331 Nm |
| Motor Power (W) | 25,000 W |
| Motor Peak Power (W) | 27,500 W |
| Revolutions per Minute (RPM) | 720 – 1400 – 2300 rpm |
| Equivalent Power (HP) | 180-230 HP |
| Weight (kg) | (New Product 2025) |
| Unit Energy Consumption / Speed (kn) | 0.48 kW/h / nmi 0.27 kW/h / km (11 km/h – 6 knot) |
|---|---|
| Usable Boat Length (m) | 6-24 m |
| Usable Boat Weight (kg) | 1,500 kg – 80,000 kg |
| Cooling Type | Air-Cooled |
| Regenerative Charging | Standard |
| Speed Range Max. (kn) | 8 kn – 12 kn |
| LiFePO4 Battery (kWh) | Customisable Power Project-Specific kWh Pack Design |
| Mounting Dimensions (L/W) mm | (New Product 2025) |
|---|---|
| Inboard Dimensions (L/W/H) mm | (New Product 2025) |
| Weight (kg) | (New Product 2025) |
| Shaft Diameter (mm) | 40-50 mm |
| Propeller Blades / Diameter (mm) | 3 / 600 mm |
| Smart Boat Automation | Optional |
|---|---|
| Smart Cruise Software | Standard |
| Geolocation Services (GPS) | Standard |
| Wi-Fi / GPRS (Internet) | Optional |
| Telemetric Data Monitoring | Optional |
| Kort Nozzle (Performance) | Optional |
| Stern Pod Fixed / 180° (Adaptor) | Optional |
| Sail Drive Pod (Adaptor) | Optional |
| Sail Drive Pod Fixed / 180° (Adaptor) | Optional |
| Twin Tiller / Hydraulic Connection | Within Project Scope |
Battery – Cruising Time Calculator
Calculate the optimal battery capacity for your NS-INB-25 25kW inboard electric boat motor and find your cruising time
How to Use
- Adjust the electronic throttle by dragging or with the arrow keys to set the throttle level
- Choose single or twin motor setup (in twin mode each motor has its own throttle)
- Select your battery pack (8–64 kWh)
- Your estimated time is calculated instantly
Power-Level Recommendations
Drag the lever, or select it and adjust with the arrow keys.
Choose Your Battery Pack
Fossil-Fuel Engine Comparison
On fossil-fuel powered boats, running in the 65–80% power range is usually recommended to optimise fuel efficiency and engine life. This economical cruising speed strikes an ideal balance between fuel consumption and speed.
The New Stream Advantage
Thanks to the high thrust that superior propulsion systems such as the New Stream 25kW inboard electric boat motor deliver at low kW levels, the throttle that fossil-fuel engines use in their 65–80% economical cruising range drops to just 40–65%. This both saves energy and yields a more efficient cruise. As a result, longer voyages are possible without needing large-volume (high-kWh) battery packs.
Accessories
All the accessories you need for your 25kW inboard electric boat motor systems
MPPT
Maximum Power Point Tracking charge controller
Charger
Fast, safe battery chargers
Solar Panels
High-efficiency marine solar-panel systems
Throttle
Electronic throttle control systems
Control Display
Touchscreen control and monitoring displays
Control Panel
Electrical system control panels
Propeller
High-efficiency marine propellers
Propeller
High-efficiency marine propellers
Model Comparison
Choose the most suitable inboard power level for your boat from the New Stream electric boat motors
| Features | NS-INB-08 | NS-INB-12 | NS-INB-16 | NS-INB-20 | NS-INB-25 Current Model |
|---|---|---|---|---|---|
| Motor Power | 8 kW | 12 kW | 16 kW | 20 kW | 25 kW |
| Equivalent Power | 50-70 HP | 75-100 HP | 95-120 HP | 130-170 HP | 180-230 HP |
| Maximum Torque | 104 Nm | 126 Nm | 158 Nm | 243 Nm | 331 Nm |
| Operating Voltage | 87.6 V | 87.6 V | 87,6 V – 102,2 V | 87,6 V – 102,2 V | 87,6 V – 102,2 V |
| Current Values | 0-90 A | 0-137 A | 0-182 A / 0-156 A | 0-228 A / 0-195 A | 0-285 A – 0-244 A |
| Suitable Boat Length | 6-12 m | 6-17 m | 6-17 m | 6-24 m | 6-24 m |
| Boat Weight | 1.5-14 ton | 1.5-30 ton | 1.5-40 ton | 1.5-80 ton | 1.5-80 ton |
| Speed Range | 7-10 kn | 8-10 kn | 8-10 kn | 8-12 kn | 8-12 kn |
| Motor Weight | 45 kg | 55 kg | 64 kg | (New Product 2025) | (New Product 2025) |
Electric Boat Motor Comparison Note: All New Stream electric boat motors share the same technological features. Choosing the Inboard electric boat motor power level depends entirely on your boat's size and intended marine use. Nawis Marine electric-motor specialists help you select the most suitable eco-friendly boat motor.
Which Model Suits You?
Our technical team helps you determine the most suitable model for your boat
Get Technical AdviceElectric Boat Motor Use Cases
Boat types and marine applications where the NS-INB-25 25kW inboard electric boat motor can be used
Technical Documents
Download our technical brochures for detailed information on the NS-INB-25 25kW inboard electric boat motor and request a quote