Current

Come about

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

Coil

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

Crew

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

Centerline

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

Chainplates

Heavy metal fittings, through-bolted to the hull structure, that anchor the lower ends of …

Cleat

A deck fitting — most commonly a horned or jam cleat — designed to hold a line under load.