U.S. classification society which certifies seagoing vessels for compliance to standardized rules regarding construction and maintenance.

Is a measure of resistance to deformation, or reluctance to be squeezed out a bearing. Indicates the internal friction of a fluid. Viscosity in normal lubricants is reduced as temperature increases

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

Oscillations of the sea caused by wind blowing along the surface and moving in the direction from which the wind blows.

An enterprise in which there is a risk of loss.

(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.

Overhanging part of a vessel's stern. The area of the upper deck of a ship that is nearest the stern.

A movement of equipment from an origin rail ramp to a destination rail ramp only.

On the lee side of an object, protected from the wind.

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

The person who is in charge of a vessel and legally responsible for it and its occupants.

A brand of lightweight anchor. It has pivoting flukes that dig into the ground as tension is placed on the anchor.

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

Metal or wooden peg inserted in gunwale of a boat for an oar to heave against when rowing without crutch or rowlock.

A suspension of fine solid or liquid particles in a gas.

See Ship's Port Agent

Navy term meaning Officer of the deck.

A gun used in the life-saving services to throw a life line to a ship in distress or from ship to shore and used when a boat cannot be launched.

To tie something with a line; to secure

The line by which a boat is connected to a mooring buoy; a short rope hanging from a spar having at its free end a spliced thimble or a block. Sometimes called "Pennant".