The difference in pressure between the opening pressure and reclose pressure of a valve. May be expressed in percentage of set pressure or "psig".

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.

To cast off all but one remaining line.

Synonymous for all practical purposes with "Intermodal."

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

A nautical astronomical observation of the sun, moon, or a star, by which means a vessel's position can be determined. The sight was taken with a sextant at a specific time, determined by a chronometer.

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

Running directly before wind and sea.

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

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.

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

Shanties are the work songs that were used on the square-rigged ships of the Age of Sail. Their rhythms coordinated the efforts of many sailors hauling on lines.

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 vessel's station bill showing duties of crew.

The last part of a rope or last link in an anchor chain.

See "Overland Common Points."

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

All matter consists of molecules which are in constant motion, but which are held together by molecular forces. In a solid the molecules are closely packed and arranged in such a pattern that the influence of the molecular forces is very strong. This give ...

In sailboat racing, the mark or buoy that signifies one side of the starting line, opposite of the race committee boat.