Spill Wind

Reducing power in a sail by allowing some wind to escape.

This is usually done by easing a sheet, changing course slightly, or adjusting sail shape so the sail is not fully loaded. It can reduce heel, make the vessel easier to steer, or provide a short-term response to a gust. It is often used before reefing or when only a brief reduction in power is needed. The aim is to keep control without completely losing forward drive.