a kind of centerboard as is the canting keel and swing keel and a retractable bulb keel
A board in the center of the boat that can be raised and lowered, acts as a removable keel.
centerboard that does not pivot a board dropped vertically through the hull to prevent leeway. May be completely removed for beaching or for sailing downwind.
A type of centerboard that is removed vertically.
A vertical plate that sticks out the bottom of the boat by sliding up and down within the daggerboard trunk.
A keel-like device that is manually raised and lowered vertically without using a hinge.
Similar to the centerboard, except it is raised and lowered vertically rather than pivoted.
A daggerboard is a retractable keel 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.