Daggerboard vs. Centreboard

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.

Centreboardnoun

The adjustable keel on a small yacht or dinghy that acts, among other things, as ballast and to counteract the sideways force of the wind.

Centreboardnoun

same as centerboard.

Centreboardnoun

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

Centreboard

A centreboard or centerboard (US) is a retractable keel which pivots out of a slot in the hull of a sailboat, known as a centreboard trunk (UK) or centerboard case (US). The retractability allows the centreboard to be raised to operate in shallow waters, to move the centre of lateral resistance (offsetting changes to the sailplan that move the centre of effort aft), to reduce drag when the full area of the centreboard is not needed, or when removing the boat from the water, as when trailering.