These systems are particularly suitable for the mainsheet control.

2 Sizes are available: Size 60 for boats up to 36 ft and lines up to 10 mm, main sheave with Cam-Cleat 60 mm, secondary sheave 50 mm, safe working load SWL = 800 kg. Size 75 for boats up to 40 ft and lines up to 12 mm, main sheave with Cam-Cleat 75 mm, secondary sheave 60 mm, safe working load SWL = 1000 kg. All sheaves are made of HRM resin with 2 races of ball bearings.