Local Area Network

A visible corrosion product consisting of hydrated oxides of iron. Applied only to ferrous alloys. See also white rust.

Physical equipment used in data processing. Compare to firmware, software.

Energy available as a result of motion that varies directly in proportion to an object's mass and the square of its velocity.

A threaded, adjustable fitting, used for stays, lifelines and sometimes other rigging. It is used to to maintain correct tension on standing rigging. Can also be used to pull objects together.

A pear-shaped, grooved metal fitting around which an eye splice is made

A recording anemometer.

The line that controls the angle of the mainsail in its relation to the wind.

Sails, such as the spinnaker, reacher and reaching staysail used when running or reaching

(1) Old nickname for a sailor, who would treat his canvas coats and hats with tar as a protection against the weather. (2) The distilled residue of gum extracted from pine trees, used for preserving many things.

Certificate of Registry (U.S. Coast Guard)

Gross Registered Tonnage

A combination cup anemometer and pressure-plate anemometer, consisting of an array of cups about a vertical axis of rotation, the free rotation of which is restricted by a suitable spring arrangement.

Philippines (Flag)

The downward facing structural element that is directly opposite the floor.

A reference sought from a bank by a company or individual regarding the creditworthiness of another.

The degradation of a solid body resulting from its exposure to cavitation. This may include loss of material, surface deformation, or changes in properties or appearance.

A region of shallow water usually made of sand or mud, usually running parallel to the shore. Bars are caused by wave and current action, and may not be shown on a chart

A mound of dirt next to exterior walls to provide wind protection and insulation.

An optical instrument which consists of a sighting telescope mounted so that it is free to rotate around horizontal and vertical axes, with graduated scales so that the angles of rotation may be measured. Used to observe the motion of a pilot balloon.