Lewmar 185TT 3.0 Kw 4HP Gen2 12v Bow Thruster

Revolutionize Your Boat Maneuvering with Lewmar 185TT Gen2 Bow Thruster

Imagine docking your vessel with pinpoint precision, even in tricky crosswinds or tight slips. The Lewmar 185TT 3.0 kW Gen2 tunnel thruster delivers exactly that—exceptional sideways control powered by a robust 12V system. Designed for boaters who demand reliability without the hassle, this Gen2 model eliminates common pain points like leaks and constant upkeep, letting you focus on the joy of being on the water.

What sets the 185TT apart? Its innovative sealed gearleg means no hydraulic reservoir to fuss with, just plug-and-play simplicity. Boaters rave about the symmetric thrust from its high-performance 5-blade propellers, ensuring consistent power whether pushing port or starboard. Perfect for vessels up to around 40 feet, it punches above its weight with 58 kgf of thrust through a compact 185mm tunnel.

Standout Features That Deliver Real-World Performance

• Maintenance-Free Design: Sealed system with no reservoir—no leaks, no fluid checks, and years of trouble-free operation. Just rinse after saltwater exposure for longevity.
• Equal Thrust in Both Directions: Precision-engineered 5-blade propellers provide balanced power, making tight maneuvers feel effortless and predictable.
• Advanced Protection: Black box electronics safeguard against overloads, while self-resetting thermal cutouts on motors prevent burnout during extended use.
• Quiet and Efficient: Hardened spiral bevel gears ensure smooth, whisper-quiet operation with maximum torque transfer—no gear whine to spoil your cruise.
• Spline-Driven Reliability: Propeller connects via splines, ditching fragile drive pins for superior durability in harsh marine environments.
• Streamlined Flow: Minimalist hub design minimizes drag, optimizing water flow for better efficiency and responsiveness.
• User-Friendly Controls: Pair with intuitive joystick or touch panel options; plug-together wiring simplifies setup.

These aren't just specs—they're battle-tested by sailors worldwide, from coastal cruisers to weekend warriors. The Gen2 upgrades bring smarter electronics and refined engineering, making it a smart upgrade over older models.

Technical Specs at a Glance

Includes: 185TT 3.0 kW Gen2 thruster unit, 2-meter motor cable, and Blue Box ICU for seamless integration.

Pro Tips for Installation and Optimal Use

Installing a tunnel thruster transforms handling, but getting it right matters. Ensure your hull's tunnel diameter matches the 185mm spec precisely—fiberglass reinforcements around the opening boost strength. Position the thruster amidships for best leverage, ideally 10-15% of waterline length from the bow.

Power-wise, pair with a dedicated 12V battery bank (at least 800-1000 CCA) to avoid straining house batteries. Run heavy-gauge cables (minimum 35mm²) to minimize voltage drop. During setup, the plug-together connections and included ICU make wiring a breeze—no electrician needed for most DIYers.

For maintenance? Virtually zero. A quick freshwater flush post-use keeps seals pristine. Monitor the black box for any alerts, but expect years of service before touching it.

Pro boater insight: In currents over 2 knots, pulse the thruster in short bursts—maximizes battery life while conquering windage.

Why Boaters Choose Lewmar 185TT for Superior Control

In a sea of thrusters, the 185TT Gen2 shines for its balance of power, quietness, and simplicity. Skip the hydraulics drama; embrace electric efficiency that starts instantly, every time. Ideal for sailboats, power yachts, or multihulls needing that extra edge in marinas or locks. If you're tired of bow blowers and prop walks, this is your game-changer.