Area into which a boat can not go without tacking.

The air compressor continues to run, usually at full RPM, but no air is delivered because the inlet is either closed off or modified, not allowing inlet air to be trapped.

On a square-rigged ship, the area between the after end of the forecastle and the forward end of the booms where lines, blocks, and tackle were stored.

Describing a small or confined space. Originated from the time when a cat-o'-nine-tails was used to inflict punishment.

Cargo which has been booked but does not arrive in time to be loaded before the vessel sails. See also "Windy Booking."

Abbreviation for "Not Otherwise Indexed."

Abbreviation for "Not Otherwise Indexed By Name."

The Customs tariff used by most countries worldwide. It was formerly known as the Brussels Tariff Nomenclature and is the basis of the commodity coding system known as the Harmonized System.

An arbitrary filter efficiency rating.

Filter rating indicating the approximate particle size for which the majority will not pass through a given filter. It is generally interpreted as meaning that 85% of the particles of size equal to the nominal filter rating will be retained by the filter.

A term that means that 98% of all particles larger than a stated micron size have been removed from the product being filtered through the filter element.

Required by some countries for protection against the dumping of certain types of merchandise or products.

A cargo consolidator in ocean trades who will buy space from a carrier and subsell it to smaller shippers. The NVOCC issues bills of lading, publishes tariffs and otherwise conducts itself as an ocean common carrier, except that it will not provide the ac ...

Are those constituents in the suction gas that cannot be condensed to a liquid with the cooling medium available.

Reciprocating type compressor used mainly in oil and gas field applications. The compressor cylinders operate at low compression ratios and experience small temperature rise.

Is one that does not attack normal materials of construction.

A compressor designed to compress air or gas without contaminating the flow with lubricating oil. Piston rings and packing are usually made of TFE-based materials or carbon or other synthetic material that operate without lubrication.

A sighting taken for celestial navigation at noon, when the sun is at its highest point in the sky.

a wind coming from the northeast

Is the term used for average atmospheric air at sea level in a temperature zone where it contains some moisture. It is defined in the ASME Test Code For Displacement Compressors as being at 14.696 psiA, 68