catboat—A small sailing boat with one mast and a single sail which is generally similar in shape to the mainsail of a sloop. For illustration see page [203].
centreboard—A movable sheet of metal or wood sometimes used by small sailboats. It extends through the keel and presents a large surface to the water and tends to eliminate lateral motion while the boat is under sail. A kind of folding keel.
chart—A map of the sea and coast projections for use by navigators. Features of the bottom are also shown for shallow water.
chronometer—An accurate timepiece generally registering the time at Greenwich, England. Navigators require this instrument in working out their longitude.
clinker—A method of small boat-building in which the covering planks overlap as weatherboarding does on the side of a house.
clipper—A fast sailing ship suddenly developed in the first half of the 19th Century. Generally, but not necessarily, the clippers were full-rigged ships. They were popular for about fifty years. For illustration see page [63].
cockpit—See WELL.
collier—A vessel employed in the coal trade.
companionway—The entrance to a ladder or flight of stairs leading from one deck to the one below.
compass—A magnetized instrument which points approximately in the direction of the Magnetic Pole and from which directions can be learned.