centreboard BrE
centerboard AmE

They were also easier to build than a large centreboard would have been.

After 1850 most were fitted with a centreboard for sailing.

The boat has a draft of 3 ft 6 in with the centreboard down.

Advanced rider boards therefore simply do not have a centreboard.

The efficiency of a centreboard improves with increasing aspect ratio.

The centreboard can then be lowered in deeper waters to increase the amount of lift.

It is performed with the centreboard down and the sail is used to turn the board.

Get the board moving as fast as possible with the centreboard retracted.

In the clear waters beneath their centreboard, many shoals of fish were visible.

A centreboard can no longer be used as its enormous lateral resistance would immediately flip the board over.

Raising the centreboard reduces drag and increases the boat's speed.

The men climbed in; Greybeard let down the centreboard.

It should not be confused with the carve gybe which is used in high winds without the centreboard.

They are raised vertically unlike a centreboard which can be set at different angles to the hull of the boat.

In small sailing dinghies it is rare to find a ballasted centreboard.

Result had spaceframes of wood to support the mast and centreboard.

The centreboard prevents lateral motion and allows the boat to sail upwind.

The centreboard version is red and the keel version is blue.

This is sometimes called the centreboard.

Among other improvements an effective gybing centreboard was developed.

Ballast is usually provided in the keel, keeping the centreboard lighter and easier to handle.

A daggerboard is a retractable centreboard used by various sailing craft.

Raising the dinghy centreboard can reduce heeling by allowing more leeway.

The centreboard banged up in its casing, and the yawl grounded on gravel with a lurch.

Due to the wide, flat bottom, a centerboard was provided.

And it occurred to me later that he had also neglected to lower the centerboard.

She was built with a centerboard, and a shallow draft for work in the Bay.

Those fishers would catch him unless he could get the centerboard down.

At the same time the centerboard trunk was removed.

It was painted on the centerboard of a 420 sailing dinghy.

The 470 Class, a 15-foot centerboard dinghy, includes separate divisions for men and women.

When the centerboard grounded and heeled over, he went overboard.

The transducer could be raised and lowered like a centerboard through the ship's bottom.

In the middle of the schooner is the center-board box, with the centerboard inside.

The metal centerboard lowered the center of gravity, making capsizing more difficult.

One radical distinction is that a slop may carry a centerboard.

Then he set the tiller in its spindles and inserted the centerboard.

They carried a centerboard to compensate for this when sailing to windward.

A centerboard is a huge affair, often made of oak and a task for two grown men, so the boy accomplished nothing.

Draft is 3.5 feet with the centerboard up and 6.8 feet with the board down.

The 14-foot centerboard boats, made of fiberglass, require agile sailors.

Moving carefully so as not to disturb his little queen, he got supplies from the shelves and put them on the centerboard.

A centerboard is mounted in lieu of a keel.

The centerboard was long and shallow as was the balanced rudder.

The most venerable will be the first Lightning Class centerboard sloop.

Dinghies, which use a centerboard rather than keel for stability, perform differently.

In 1899, at age 14, he, along with a friend, designed and built the 24-foot centerboard racing sloop Empress.

He had also discovered that the centerboard was jammed; he couldn't get it up or down.