Thruster Accessories

Composite Gear Box

The Lewmar Composite Gearbox offers lightweight, corrosion-resistant drive performance for modern windlass systems. Built from advanced composite materials, it delivers smooth, quiet power transfer with excellent durability in harsh marine environments, an ideal upgrade or replacement for efficient, long-lasting anchoring operation.

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Lightweight, Corrosion-Resistant Drive Performance

The Lewmar Composite Gearbox is engineered to deliver smooth, efficient power transfer while significantly reducing weight compared to traditional metal gearboxes. Designed for modern windlass systems, this advanced gearbox offers exceptional strength, quiet operation, and long-term reliability in demanding marine conditions.

Advanced Composite Construction

Manufactured from high-grade composite materials, the gearbox provides:

  • Outstanding corrosion resistance, ideal for saltwater exposure 
  • Reduced overall system weight, improving efficiency and ease of installation 
  • High mechanical durability, able to withstand repeated load cycles

Its non-metallic housing is specially designed to resist moisture, chemical exposure, and the harsh marine environment.

Smooth, Reliable Power Delivery

Precision-engineered internal gearing ensures stable torque output and smooth operation during both anchor deployment and retrieval. The gearbox is built to deliver dependable performance across a wide range of windlass loads.

Quiet & Low-Maintenance Operation 

Composite construction naturally dampens vibration and noise, contributing to quieter windlass performance. The sealed design also reduces maintenance needs, providing long-lasting reliability with minimal servicing.

Ideal for Windlass Rebuilds, Upgrades & New Installs

Perfect for replacing older, heavier gearboxes or integrating into new lrightweight configurations, the Lewmar Composite Gearbox offers a modern, efficient solution for today’s cruising and performance boats.

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