Daggerboard vs. Centerboard

Daggerboardnoun

(nautical) A retractable centreboard that slides out to act as a keel.

Daggerboardnoun

a removable centerboard on a small sailboat that can be lowered into the water to serve as a keel

Daggerboard

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.

Centerboardnoun

A retractable or sliding keel used on sailboats, formed of a broad board or slab of wood or metal which may be raised into a water-tight case amidships, when in shallow water, or may be lowered to increase the area of lateral resistance and prevent drifting to leeward when the vessel is beating to windward. It is used in vessels of all sizes along the coast of the United States

Centerboardnoun

a retractable fin keel used on sailboats to prevent drifting to leeward