Discover Superior Maneuverability with the Lewmar 185TT Tunnel Thruster

Navigating tight marinas or handling crosswinds during docking becomes effortless with the Lewmar 185TT 5.0 kW Gen2 bow thruster. Designed for boats up to 50 feet, this 12V model delivers 82 kgf of thrust, providing precise control without the hassle of traditional hydraulic systems. Boat owners rave about its reliability in saltwater environments, where it stands up to corrosion and demanding conditions year after year.

Unlike older thrusters that require constant upkeep, the 185TT Gen2 eliminates reservoirs, seals out leaks, and demands minimal maintenance. Its innovative design ensures balanced thrust in both directions, making it ideal for recreational cruisers, fishing vessels, and liveaboards seeking smooth, responsive handling.

Engineered for Peak Performance and Durability

• Maintenance-Free Operation: No hydraulic reservoir means no fluid checks or refills—install it and forget about leaks.
• High-Efficiency Propellers: Five-blade design with a spline-driven system delivers equal forward and reverse thrust, optimized for minimal water turbulence via a low-profile hub.
• Robust Gearing: Hardened, ground spiral bevel gears transmit power quietly and efficiently, reducing noise during operation.
• Intelligent Electronics: The black box ICU safeguards the motor from overloads, with self-resetting thermal protection on all circuits.
• Seamless Controls: Pair with joystick or touch panel interfaces for intuitive operation; plug-and-play wiring simplifies setup.
• Corrosion-Resistant Build: Stainless steel hub and high-integrity seals protect against harsh marine exposure.

These features combine to create a thruster that's not just powerful but also whisper-quiet, letting you focus on the joy of boating rather than fighting the helm.

Technical Specifications at a Glance

Effortless Installation and Setup

Boatbuilders and DIY enthusiasts appreciate the 185TT's straightforward install process. The 185 mm tunnel size fits most hull designs, and the included 2-meter motor cable connects directly to the blue box ICU for plug-and-play integration. Position the unit in the bow, secure the tunnel through the hull, and wire to your 12V battery bank—often completed in a weekend. Pro tip: Align the thruster perfectly parallel to the waterline for maximum efficiency and to avoid uneven thrust.

Compatible with Lewmar's joystick or touch controls, it integrates seamlessly with existing DC systems, drawing power only when needed to preserve battery life on extended trips.

Real-World Benefits for Boaters

Imagine slipping into a crowded slip sideways without a fuss, or holding position against wind and current during anchoring. The 185TT excels in these scenarios, with users reporting up to 30% better maneuverability compared to propeller-based systems. Its Gen2 upgrades mean longer service intervals and fewer breakdowns, saving time and money over seasons of use. Saltwater boaters note the seals hold up exceptionally well, even after years of exposure.

Package Contents

• Lewmar 185TT 5.0 kW Gen2 Thruster Unit
• 2-Meter Motor Cable
• Blue Box Intelligent Control Unit (ICU)

Everything you need for a complete installation, straight out of the box.

Frequently Asked Questions