The Lewmar 125TT Tunnel Bow Thruster is a powerful and compact maneuvering solution designed for small to medium-sized boats. With a 2.0kW (2.7HP) motor and a 125mm tunnel diameter, it delivers increased thrust compared to entry-level models, making docking and low-speed handling significantly easier.
Designed for vessels up to approximately 10–11 meters (≈33–36 ft), the 125TT provides reliable lateral control in marinas, tight spaces, and challenging wind conditions. Its efficient 12V motor and optimized 5-blade propeller ensure smooth, quiet, and responsive performance.
Key Advantages
Enhanced Maneuvering Power
More thrust compared to 110TT, ideal for heavier or higher windage boats.
125mm Tunnel Size
Optimized for mid-range small boats, balancing installation size and performance.
Efficient 2.0kW Motor
Provides strong thrust while maintaining compatibility with standard 12V systems.
Quiet & Low-Vibration Operation
Precision gearbox and balanced propeller reduce noise and vibration.
Composite Corrosion-Free Design
Lightweight composite construction eliminates corrosion issues and reduces maintenance.
Recommended Applications
- Motorboats up to 10–11 meters
- Sailing yachts with moderate displacement
- Cabin cruisers
- RIBs and tender boats with higher windage
Technical Specifications
| Parameter |
Value |
| Model |
125TT |
| Power Output |
2.0 kW |
| Power (HP) |
2.7 HP |
| Voltage |
12 V |
| Tunnel Diameter |
125 mm |
| Max Boat Length |
up to 36 ft |
| Installation Type |
Tunnel |
| Propeller |
5-blade composite |
Dimensions
| Parameter |
Value |
| A |
123 mm |
| B |
209 mm |
| C |
125 mm |
| D |
71 mm |
Construction & Technology
Lewmar TT Thrusters feature advanced composite construction that:
- provides full corrosion resistance
- reduces system weight
- eliminates the need for zinc anodes
- increases durability and service life
The hardened and ground spiral bevel gears ensure maximum efficiency and smooth power transmission.
Installation & Compatibility
Installation should be carried out by a qualified marine electrician.
The system requires:
- correct cable sizing
- ANL fuse protection
- proper control panel wiring
- compliance with Lewmar installation diagrams
Compatible with:
- Lewmar joystick controls
- dual helm stations
- standard 12V onboard electrical systems
What’s Included
- Thruster unit
- Propeller
- Installation components
- (depending on kit) joystick and wiring
Why Buy from Gaelix Marine Service
- Professional bow thruster selection based on boat size and type
- Technical consultation and installation support
- Compatibility with Lewmar and Max Power systems
- Worldwide supply and delivery
- B2B and project-based solutions
Call to Action
Contact us for expert advice on selecting the right bow thruster for your vessel.
We will calculate the required thrust, recommend components, and provide a complete solution.
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