The condition when a perfect gas is isentropically compressed, and the gas inlet temperature and also the amount of work spent is the same for each stage.

Member of a crew who works all day but does not keep the normal watches.

Stands for "Immediate Exit." In the U.S., Customs IE Form is used when goods are brought into the U.S. and are to be immediately re-exported without being transported within the U.S.

Inlet guide-vane valve. Valve assembly at the air inlet of a "blower" (single stage, low pressure, centrifugal air compressor). Usually advised to be mounted in very close proximity to the "blower" impeller. Provides "pre-swirl" of air flow in same rotati ...

International Labor Organization; Based in Geneva, it is one of the oldest components of the UN system of specialized agencies and has been involved over the years in appraising and seeking to improve and regulate conditions for seafarers. In its unusual ...

An entry that allows foreign merchandise arriving at one port to be exported from the same port without the payment of duty.

Incapable of being mixed without separation phases. Water and petroleum oil are immiscible under most conditions, although they can be made miscible with the addition of an emulsifier.

The part of the rotating element of a dynamic compressor that imparts energy to the flowing medium by means of centrifugal force. It consists of a number of blades mounted so as to rotate with the shaft.

To receive goods from a foreign country.

A document required and issued by some national governments authorizing the importation of goods.

Cargo moving under Customs control where duty has not yet been paid.

The transaction or interchange that occurs at the time a container is received by a rail terminal or water port from another carrier.

A sailboat with its bow pointed directly into the wind, preventing the sails from filling properly and stopping the boat. It can be very difficult to get a boat that is in irons back under sail. also known as "In Stays".

A vessel is in soundings when she is in sufficiently shallow water for soundings to be made and used as an aid in the vessel's navigation.

In transit, or in passage.

Allows foreign merchandise arriving at one port to be transported in bond to another port, where a superseding entry is filed.

Towards the center line of a ship (towards the center).

A lower-than-usual tariff rate assessed because a shipper offers a greater volume than specified in the tariff. The incentive rate is assessed for that portion exceeding the normal volume.

A unit used when measuring atmospheric pressure. 33.86 millibars.

A measurement of vacuum or pressure that is used to measure the airflow restriction.