Lewmar 185TT 4.0 Kw 5.4HP Gen2 12v Bow Thruster
Lewmar 185TT 4.0 Kw 5.4HP Gen2 12v Bow Thruster — Product description
Discover Superior Maneuverability with the Lewmar 185TT Gen2 Bow Thruster
Navigating tight marinas or handling crosswinds during docking becomes effortless when you equip your vessel with the Lewmar 185TT 4.0 kW Gen2 12V bow thruster. Designed for boats up to around 45 feet, this tunnel thruster delivers 65 kgf of precise thrust, giving you confident control in both forward and reverse directions. Boat owners rave about its whisper-quiet operation and reliability, making it a go-to upgrade for recreational sailors and serious cruisers alike.
What sets this Gen2 model apart is its innovative engineering—no hydraulic reservoirs mean zero leaks or ongoing maintenance hassles. Instead, it relies on a robust electric system with self-resetting thermal protection, ensuring your thruster is always ready when you need it most. Whether you're a weekend warrior or a liveaboard adventurer, this thruster transforms stressful berthing into a smooth routine.
Key Features That Outperform the Competition
- Maintenance-Free Design: Eliminate worries about fluid leaks or reservoir checks—pure electric power keeps things simple and seaworthy.
- Balanced Thrust from High-Performance Props: Five-blade propellers, spline-driven without fragile pins, provide equal power port and starboard for pinpoint accuracy.
- Durable High-Integrity Seals: Built to withstand harsh marine environments, preventing water ingress and extending service life.
- Advanced Black Box Electronics: Safeguards the motor from overloads and misuse, with intuitive plug-and-play connections for hassle-free setup.
- Quiet and Efficient Gearing: Hardened spiral bevel gears transmit power smoothly, minimizing noise and vibration even at full thrust.
- Sleek Minimum Silhouette Hub: Optimizes water flow for maximum efficiency and reduced drag when not in use.
- Flexible Controls: Pair with joystick or touch panel options to match your helm's style—responsive and user-friendly.
These features aren't just specs; they're real-world advantages honed from decades of Lewmar's marine expertise, ensuring your investment performs season after season.
Technical Specifications at a Glance
| Specification | Details |
|---|---|
| Model | 185TT 4.0 Gen2 |
| Hub Material | Stainless Steel |
| Voltage | 12V DC |
| Power Output | 4.0 kW (5.4 HP) |
| Tunnel Diameter | 185 mm |
| Thrust | 65 kgf |
| Weight | 20 kg |
Compact yet powerful, it fits neatly into standard hull designs without compromising structural integrity.
Effortless Installation and Everyday Use
Installation is straightforward for savvy DIYers or pros—route the included 2-meter motor cable, connect to the blue box ICU (Intelligent Control Unit), and you're set. The Gen2's plug-together switches simplify wiring, reducing install time significantly. On the water, expect instantaneous response with no warm-up, perfect for those surprise wind shifts.
Maintenance? Virtually hands-off. The self-resetting thermal cutouts protect against overuse, while the sealed system shrugs off salt spray and submersion. Pair it with Lewmar's control panels for a setup that feels custom-built for your boat.
What's Included for Immediate Deployment
- Lewmar 185TT 4.0 kW Gen2 Thruster Unit
- 2-Meter Motor Cable
- Blue Box ICU for Smart Electronics Management
Everything you need to get thrusting—focus on the horizon, not the toolbox.
Frequently Asked Questions
What boats is the Lewmar 185TT 4.0 kW suitable for?
Ideal for displacement hulls up to 45 feet (14 meters) with beam widths accommodating a 185 mm tunnel. Perfect for sailboats, motor yachts, and trawlers needing reliable bow control.
How does the Gen2 model improve on previous versions?
Gen2 brings black box electronics for better protection, spline-driven props for durability, and enhanced seals for longevity—no more drive pins or leak-prone reservoirs.
Is this bow thruster noisy during operation?
No, its hardened spiral bevel gears ensure ultra-quiet performance, even at full 65 kgf thrust. Many users report it's barely noticeable from the helm.
What controls work with the Lewmar 185TT?
Compatible with Lewmar joysticks or touch panels. The plug-and-play design makes integration seamless with existing helm stations.
Does it require regular maintenance?
Minimal—fully sealed electric system eliminates hydraulic fluids. Annual visual checks suffice, with thermal protection handling overloads automatically.
Can I install it myself?
Yes, for experienced boat owners. Cut the tunnel, mount the unit, connect cables to the ICU—most complete it in a weekend with basic tools.
What's the power draw on a 12V system?
Rated at 4.0 kW, it draws high amps briefly for thrust bursts. Ensure your battery bank and alternator can handle peak loads for optimal performance.
Lewmar 185TT Tunnel Thrusters
Model: 590008- No reservoir to install, no leaks and no maintenance
- High performance 5 blade propellers give equal thrust in both directions
- High integrity seal
- Spline driven propeller, no drive pin required
- Black box electronics prevents misuse and protects motor
- Hardened and ground spiral bevel gear for maximum efficiency and quiet power transmission
- Self resetting thermal protection on all motors
- Choice of Joystick or Touch Panel controls
- Easy plug together switch connections
- Minimum silhouette hub for smooth water flow
185TT Tunnel Thrusters
Specifications| Model | 185TT 4.0 |
| Hub | Stainless Steel |
| Voltage | 12V |
| Power (kw) | 4.0 |
| Tunnel size (mm) Tunnel size (mm) | 185 |
| Thrust(kgf) | 65 |
| Weight (kg) | 20 |
What's in the Box:
- Lewmar 185tt 4.0 Kw 5.4HP Gen Thruster, 2 Meter Motor Cable, and Blue Box ICU
Lewmar Lewmar 185TT 4.0 kilowatt 5.4 horsepower Gen2 12v bow and arrow thruster-provided by a proven and experienced company. Lewmar 185TT 4.0 kW 5.4 hp Gen2 12v bow thruster. Home and office, consumers...
SKU: NVN-1000858
MPN: 590008
UPC: 743683033339
Technical specifications
| Brand | Lewmar |
| Model | Lewmar 185TT 4.0 Kw 5.4HP Gen2 12v Bow Thruster |
| SKU / MFR# | 1000858 |
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Frequently asked questions
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