From Wikipedia, the free encyclopedia.
A daggerboard is a type of centreboard used by various sailing craft. Centreboards are used to enable a craft to beat upwind, i.e. to make progress upwind without sliding to leeward excessively.
While other types of centreboard may pivot to retract, a daggerboard slides in a casing.
The Mirror dinghy, for example, uses a plywood daggerboard.
