Cunningham

A line rigged through a cringle a short way above the tack of the mainsail and pulled down to increase luff tension, flattening the sail's entry.

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Related C-terms

Coil

To lay a rope down in neat, uniform loops for storage, or the stored loops themselves.

Cabin

The enclosed interior accommodation of the vessel.

Catamaran

A multihull with two parallel hulls connected by a deck, bridgedeck, or trampoline.

Chart

A nautical map showing coastlines, depths, aids to navigation, and hazards.

Come about

Synonym for tacking — turning the bow through the eye of the wind.

Centerline

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

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