Features May 2016 Issue

Cracking the Leeway Code

Can an electromagnetic knot log measure side-slip with precision?

Performance-oriented sailors recognize that leeway is one of the last variables left to be accurately quantified. It can be defined as a sailboat’s movement through the water in a direction that differs from the boat’s heading. Unfortunately, today’s paddle-wheel transducers and most electronic speed sensors provide only inline velocity readings related to the direction that the boat is heading.

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