The headway a vessel makes when luffed in the wind; the distance a sailing vessel will shoot up to windward when brought head to head in the act of tacking.

Running directly before wind and sea.

A symbol placed on packages for identification purposes; generally a triangle,square, circle, etc. with letters and/or numbers and port of discharge.

Engineering science pertaining to gaseous pressure and flow.

A piece of equipment designed to lift containers by their corner castings.

A standard numeric code developed by the United Nations to classify commodities used in international trade, based on a hierarchy.

Articles packed so that one rests partially or entirely within another, thereby reducing the cubic-foot displacement.

see Chanty.

A distress call made by a vessel requiring assistance. These three letters were chosen because they were easy to make and read using Morse Code. Some believe the letters meant "Save Our Ship" or "Save Our Souls".

A blast of from 4 to 6 seconds' duration.

A purchase (block and tackle) for hoisting a boat to its davits.

The senior engineer officer responsible for the satisfactory working and upkeep of the main and auxiliary machinery and boiler plant on board ship.

Blocks of wood made to fit in the hawse-holes, or holes in the half-ports, when at sea. Those in the hawse-holes are sometimes called hawse-blocks.

Response to an offer which varies the terms or conditions of that offer.

See "Overland Common Points."

A vessel's station bill showing duties of crew.

To measure the depth of the water with a lead. Also said of a whale when it dives to the bottom.

An object made with more than one type of material.

To carry sail to the full limit of strength of masts, yards, and tackles.

A severe type of food poisoning caused by eating contaminated fish