rig.= Vessel with two masts, both square-rigged
but having a gaff mainsail.

=Buoy.= A floating object moored over a certain
spot; generally a warning of danger.

=Buoyancy.= The capacity for floating which a boat
possesses.

=Cabin.= Room for use of officers and passengers.

=Capstan.= Consists of a long drum revolving
vertically and used for pulling in heavy lines.
Sometimes used in connection with windlass to
hoist anchor by hand.

_Center of Gravity._ Center of weight.

=Coaming.= Raised planking around hatchway of
yacht to prevent water shipped in rough weather
from getting below decks.

=Cockpit.= Formerly an apartment under lower
gun-deck of warship, used as quarters for junior
officers, and during a battle devoted to the
surgeon and his assistants.

=Cockswain.= Person who steers a boat.

=Compass.= Instrument composed of one or more
magnetic needles attached to a circular card which
turns freely on the point of a steel cone or
floats on a liquid. The upper surface of the card
is divided into the 32 points of the compass. Used
to find direction.

=Craft.= Usually denotes small size vessel, but
may be applied to any kind.

=Crane.= Machine for hoisting and moving heavy
equipment and material.

=Cruiser.= Boat intended for extended voyages.
Used in connection with yachts, to distinguish
from racing models.

=Davit.= Light crane on side of ship for lowering
and lifting boats. Sometimes applied to projecting
beam over which anchor is hoisted.

=Displacement.= Weight of ship and all on board
when at sea. It is equal to the weight of the
water displaced.

=Dock.= An excavation of large area for reception
of vessels. Wet-dock for loading and unloading or
dry-dock for building and repairing vessels.

=Dock-yard.= A place where ships are built and
repaired.

=Funnel.= Large sheet-iron tube extending from the
uptake high above the deck, through which smoke
and gases pass.

=Galley.= The kitchen of a vessel.

=Gangway.= Sides of upper deck from main-mast to