Centerboard

A pivoting keel that can be raised into a trunk to reduce draft and lowered to resist leeway.

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Related C-terms

Crew

Everyone aboard besides the skipper who helps sail and run the boat.

Cunningham

A line rigged through a cringle a short way above the tack of the mainsail and pulled down…

Centerline

The imaginary line running down the middle of the vessel from bow to stern.

Current

Horizontal movement of water driven by tide, wind, river flow, or ocean circulation.

Can

In the IALA Region B buoyage system (USA, parts of the Americas, Japan, Korea, Philippines…

Course

The direction, expressed in degrees, in which the vessel is being steered.

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