Karver KSW40 Speed Winch - 4-Speed Winch

The Karver KSW40 4-speed winch is a high-performance sailing winch designed for maximum efficiency, speed and control. Featuring an innovative 4-speed automatic system, it delivers the functionality of a traditional 2-speed winch with two additional ultra-fast gears, making it one of the fastest yacht winches available.

By simply changing the direction of rotation, the winch automatically shifts through its four speeds, returning to first gear when the load is released. This allows for fast, smooth and efficient line handling during manoeuvres, significantly reducing effort and improving boat performance.

Compared to a standard winch of a similar size, the KSW40 pulls in line up to 6 times faster. This means less cranking, quicker sail adjustments and more efficient tacks, gybes and hoists. Ideal for racing yachts and short-handed crews, it eliminates the need to manually take up slack, keeping manoeuvres fast, controlled and safe.

Key Features:

• Innovative 4-speed automatic winch system
• Two standard speeds plus two ultra-fast additional speeds
• Up to 6x faster line retrieval than equivalent winches
• Automatic gear change via rotation direction
• Returns to first gear when load is released
• Self-tailing design for secure rope handling
• Reduces effort and improves manoeuvre efficiency
• Ideal for racing, cruising and short-handed sailing

The Karver KSW range is widely used on performance yachts, including Class 40 race boats, where speed and efficiency are critical. Faster line handling reduces sail wear, maintains sail shape and helps the boat retain speed through manoeuvres.

Constructed from hard anodised aluminium, the KSW40 is built to withstand harsh marine conditions while minimising corrosion and component wear. The winch is also designed for easy maintenance and long-term reliability.

Specifications:

Model: KSW40
Reference: PF1205830
Weight: 5.36 kg
Recommended Boat Size: 10 – 80 ft
Number of Speeds: 4
Maximum Power: 40 kg
Working Load: 0.85 T
Line Diameter: 8 – 12 mm
Drum Diameter: 84 mm
Base Diameter: 171 mm
Height: 190.5 mm
Line per Turn: 70 cm (max)
Power Ratios: 2.30 / 8.00 / 11.60 / 40.00
Speed Ratios: 0.38 / 1.32 / 1.92 / 6.61
Fixing: 6 x M8
Drum Material: Aluminium (hard anodised)
Warranty: 5 years