An old expression meaning heartily or quickly.

A fix taken by taking bearings of a single object over a period of time. By using the vessel's known course and speed, the location of the vessel can be found.

A laborer who works at loading and discharging cargo.

A multihull with two hulls separated by a deck or crossbeams from which a trampoline is suspended; abbreviated "cat."

A strong pair of iron, steel or wooden posts on a ship's deck, around which ropes or cables are wound and held fast.

During the operation of tacking, the moment when a sailing vessel is head to the wind and hanging there, with her head not paying off on the opposite tack. Such a vessel is said to be "in stays" or "in irons".

The posted bill showing stations of the crew at maneuvers and emergency drills.

A line attached to the crown of an anchor and used to help free it in the event it becomes fouled.

Going toward the direction of the wind, by alternate tacks.

Lights required to be shown on boats underway between sundown and sunup.

Filtering device used to remove the solid debris from the cooling water.

The difference between the maximum extended height and the compressed height of an air actuator.

The lifting power. It may be measured by the volume of a watertight hull above the load water line.

A mast that is in place is stepped.

Port where cargo is discharged from means of transport.

The act of breaking out the flukes of an anchor if they are caught on some obstruction, preventing it from being normally weighed.

A certificate authenticated by a recognized port authority, certifying that a ship comes from a place where there is no contagious disease, and that none of her crew was infected with such a disease.

Pounds per square inch, differential.

Horizontally mounted block used to re-direct a line on deck.

Cycles per minute - a unit of measure of the frequency of any vibration.