Normally a boat sailing upwind will sail approximately 45° into it, then “tack” 90° across the wind until they’re at another 45° angle from the wind, this time facing the opposite direction.

As we shivered in the knee-deep surf, Jallais quickly showed us how to clamber onto our boards, haul the sail into vertical position and tilt the boom to catch the wind. Within 10 minutes, I was ...

It’s a machine that can move with the wind at a speed faster than the wind itself. A fundamental law of sailing boats is that when they are sailing with the wind, i.e. in the same direction as ...