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A movable keel in a sailboat that can be pivoted upward to reduce the boat's draft in shallow water.


(ˈsɛn tərˌbɔrd, -ˌboʊrd)

a pivoted fin keel on a sailboat that can be retracted.
[1840–50, Amer.]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.centerboard - a retractable fin keel used on sailboats to prevent drifting to leeward
daggerboard - a removable centerboard on a small sailboat that can be lowered into the water to serve as a keel
fin keel - a metal plate projecting from the keel of a shallow vessel to give it greater lateral stability
sailboat, sailing boat - a small sailing vessel; usually with a single mast
References in periodicals archive ?
on August 9, 1945; operation Centerboard II, the mission to drop the second atomic bomb on a Japanese city, had begun.
I left the centerboard slot and wooden centerboard, which has proven useful for shoving into the mud to balance the boat," he said.
We have another separate business known as Quantum One Design which provides sails for one-design keel and centerboard boats internationally, with all designs and materials updated annually to a new series and model number from regattas sailed around the world with in-house designers competing at the events.
The Lending Club, sailed by a Tritium Racing team of nine accomplished sailors including Lending Club CEO Renaud Laplanche, encountered an unusually high amount of debris as it sailed through the Pacific Ocean, including a telephone pole that heavily damaged the centerboard, forcing the crew to stop for over 10 hours of repairs.
Records and photographs reveal that more expensive purpose-built sailing dinghies were produced, complete with mast, rigging spars, jib boom, samson post, pin rail, centerboard and rudder, but it is not yet known in what proportion.
The split-beam transducers were mounted on the bottom of a retractable centerboard, positioning the transducers 9.
Swift's high freeboard, aluminum construction combined with her shallow draft make her behave like a large sailboat without a keel or centerboard, they explained.
Raising or lowering the centerboard also helped to control its movements, and, in the shallowest waters, it could be used as a brake by letting it scrape the bottom.
To help keep the boat sailing straight, small boats have a centerboard (cen-ter-board).
A centerboard eighteen feet deep could be hoisted with block and tackle.
Aware of the strength and direction of the wind, an experienced sailor knows how to trim sails and adjust the centerboard in order to progress in the intended direction.
After untying the dock lines, Sarah pushed Whisper away from the dock and jammed down the centerboard.