Daggerboard

This article is about the sailing vessel component. For the wooden fascia panels in canopy roofs, see Canopy (building).
Exocet Kona daggerboard compared to Mistral One Design daggerboard
Windsurf daggerboards from Exocet Kona and Mistral One Design
A Laser has a daggerboard, which can be pulled up through the centre of the hull.

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]