• Variable sail settings for all skill levels.
• Varying wind strengths can be controlled to
maximum effect with only the mainsail.
• No boom required.
• Precise trim using the mainsheet, down-haul
and clew-traveller.

The streamcut square-head sail - 4 profiles with only one sail

Light wind profile for wind speed of 0-8 knots.

Moderate wind profile for wind speed of 9-16 kniots.

Strong wind profile at the sail head for wind speed over 17 knots.

Running cross-section.

Result:
With simple operation the optimal conversion of apparent wind to speed is achieved