A point through which all buoyant forces on an immersed hull are assumed to act.

(1) The portion of an anchor that digs securely into the bottom, holding the boat in place. (2) The two triangular parts which make up a whale's tail.

(1) Clear, not tangled. (2) sailing free: a vessel is sailing free when her sheets are eased. (3) running free: to sail with the wind from astern.

A small boat designed to be rowed by use of its oars. Some dinghies are rowboats.

The westerly distance in an arc from Aries, measured as an angle at the pole or as the intercepted arc of the equinoctial between the hour angle of Aries and the hour angle of the body.

A schematic flow sheet showing all controls involved with the system.

A recess into the keel or a framework fixed to the keelson in which the mast is placed

A belt and line or wire used to help a crew hike out beyond the edge of a boat to counteract the boat's heel. Usually used on small vessels for racing.

Are the connections between the headers and the work station.

An arc of a circle in which certain types of navigational lights known as sector lights are visible.

A machine which aspirates gas which has already been compressed and delivers the same at higher pressure.

An adiabatic compression with no increase in entropy; a reversible-adiabatic compression.

An all around white light displayed at night by a ship when she is anchored.

A breakwater used as a landing pier.

Of a system (or part thereof) is its condition at an instant of time as described or measured by its properties.

A small naval sword worn by midshipmen or their equivalents when in full dress uniform.

Is the saturation pressure at the critical temperature. It is the highest vapor pressure that the liquid can exert.

A standard numerical code used by the U.S. Government to classify products and services.

Two lines spliced together to form an eye.

(1) To stop moving. (2) Usually air travels smoothly along both sides of a sail, but if the sail is not properly trimmed, the air can leave one of the sides of the sail and begin to stall. Stalled sails are not operating efficiently.