Daggerboard
From Wikipedia, the free encyclopedia
This article is about the sailing vessel component. For the wooden fascia panels in canopy roofs, see Canopy (building).
A daggerboard is a retractable centreboard used by various sailing craft. While other types of centreboard may pivot to retract, a daggerboard slides in a casing. The shape of the daggerboard converts the forward motion into a windward lift, countering the leeward push of the sail. The theoretical centre of lateral resistance is on the trailing edge of the daggerboard.[citation needed]