Harken® gross-trim/fine-tune mainsheet systems are easy to install and use. These optimized systems decrease overall line clutter because they use less line than traditional gross-trim/fine-tune systems.

Minimum line Ø (mm)
8 mm

Minimum line Ø (in)
5/16 in

Maximum line Ø (mm)
10 mm

Maximum line Ø (in)
3/8 in

Maximum sail area - end-boom (m²)
32.4 m²

Maximum sail area - end-boom (ft²)
350 ft²

Maximum sail area - mid-boom (m²)
25.5 m²

Maximum sail area - mid-boom (ft²)
275 ft²