An articulated five-platform rail car that allows containers to be double stacked. A typical stack car holds ten 40-foot equivalent units (FEU's).

ACRONYM - Compressed natural gas, primarily methane.

In sailboat racing, to have a controlling position over competitors by staying between them and the next mark or buoy - a tactical maneuver in which the lead boat stays between the trailing boat and the wind or the next mark.

Abnormal, rapid reciprocating movement of the disc on the seat of a pressure relief valve.

The department in the London Stock Exchange which is responsible for the Regulatory News Service.

A long sturdy pole fitted with a blunt hook at one end designed to catch a line when coming alongside a pier or mooring, to facilitate putting a line over a piling, recovering an object dropped overboard, or in pushing or fending off.

That part of the water which is diverted from the main stream of a current and as a result flows in the opposite direction.

Same as two blocks.

A document, certified by a consular official, is required by some countries to describe a shipment. Used by Customs of the foreign country, to verify the value, quantity and nature of the cargo.

ISO.

Port where cargo is unloaded and enters a country.

Compressors in which successive volumes of air or gas are confined within a closed space, and compressed. They may be either reciprocating or rotating. (Trap air and then squeeze it to the desired pressure).

A pair of vertical wooden or iron heads on board ship, used for securing mooring or towing lines. Similar to dock bollards.

A measure of air compressor efficiency, usually in the form of bhp/100 acfm or acfm/bhp

A combination of one or more blocks and the associated tackle necessary to give a mechanical advantage. Useful for lifting heavy loads.

Arrangements with a steamship line to transport containerized cargo.

A small toggle used on a flag.

Center point of all underwater area of the hull where the hull's lateral resistance can be said to be centered.

A large and powerful sheet winch

A winch with the ability to hold and haul a tensioned mooring rope and having a capacity for rope storage, controlled solely by hand.