A coating or precipitate deposited on surfaces such as water pipes, steam boilers that are in contact with hard water. Water that contains carbonates or bicarbonates of calcium or magnesium are likely to cause scale when heated.

The document required by the carrier or freight forwarders to obtain (besides the data needed) authorization to issue and sign the air waybill in the name of the shipper.

The rod connecting the disc to the lever on a valve.

The stationary seating surface, the inlet of a valve.

To temporarily stop all movement of a line through a block by placing the hauling part across the sheave of the block. This jams the sheave and holds it tight, and a pull on the hauling part will release it.

Another term for a marine railway.

The internal duct and filter medium support

Small, circular sheets of newly-formed ice that do not impede navigation.

A line drawn on a chart, as a result of a bearing, along which the boat is positioned

A person or firm performing a consolidation service for others. The consolidator takes advantage of lower full carload (FCL) rates, and savings are passed on to shippers.

In maritime warfare, a declaration published by a power forbidding sea-borne trade with an enemy.

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

ACRONYM - Compressed natural gas, primarily methane.

A large balloon shaped lightweight sail used when running or reaching. Spinnakers are made of cloth very similar to that used for parachutes, which is why you may also hear them called chutes, or kites.

A low vertical lip or raised section around the edge of a cockpit, hatch, etc. to prevent water on deck from running below.

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 severe type of food poisoning caused by eating contaminated fish

The anti-corrosive paint used on and above the waterline.

States that the volume of a gas, at constant pressure, varies directly with the absolute temperature.

An organization established by the members of an ocean conference acts as a self-policing force with broad authority to investigate tariff violations, including authority to scrutinize all documents kept by the carriers and their personnel. Violations are ...