The rotating element of a machine and, in the case of a compressor, is composed of the impeller (impellers) and shaft, and may include shaft sleeves and a thrust balancing device.

An order to make haste.

The ship that carries an admiral's flag.

A steamship. A ship propelled by a steam engine.

Sailing ship with a favorable wind, sailing dry and easily. A person riding the crest of good fortune

Loan issued against some security

Difference between minimum and maximum pressures for an air compressor. Also called cut in-cut out or load-no load pressure range.

is an ideal process that may be stopped and made to retrace its steps and restore to the systems or surroundings all work and heat previously removed. It is frictionless.

see Holystone

(1) The land in general, but usually refers to that part adjacent to the water. (2) A timber used in damage control to brace bulkheads and decks. (3) One of the many wooden props by which the ribs or frames of a vessel are externally supported while build ...

A stationary element that may be adjustable and which directs the flow medium to the inlet of an impeller.

Machines in which air or gas is compressed from initial pressure to an intermediate pressure in one or more cylinders or casings.

An urgent message used on a radio regarding the safety of people or property. A PAN PAN message is not used when there is an immediate threat to life or property, instead the MAYDAY call is used. PAN PAN situations may develop into MAYDAY situations. As w ...

(0.2+0.02 log10(Vc)) Vc (4d/3D)2, for passenger ships the following formula is added: 1.25 (GT+10000)/10000 (N1+(N2/10)), where Vc is the volume of cargo holds, D is the distance between ship's bottom and the uppermost deck, d is the draught N1 is the num ...

The structure perpendicular to the shoreline to which a vessel is secured for the purpose of loading and unloading cargo.

The frames or timbers of a ship as they rise from the keel to form the shape of the hull.

A certificate issued by the U.S. Department of Agriculture to satisfy import regulations of foreign countries; indicates that a U.S. shipment has been inspected and found free from harmful pests and plant diseases.

A support wire running from the upper part of the mast to the bow of the boat designed to pull the mast forward. A forestay that attaches slightly below the top of the mast can be used to help control the bend of the mast. The most forward stay on the boa ...

Sudden and rapid flow of tide in certain rivers and estuaries which rolls up in the form of a wave. also known as Eagre.

Any signal that is used to indicate that a vessel is in distress and needs help. Flares, smoke, audible alarms, EPIRB, electronic beacons and others are all types of distress signals.(2) A flag display or a sound, light, or radio signal calling for assist ...