A compressor belonging to the group of dynamic compressors.

Small boat carried on the vessel and used in case of emergency.

Where meals are eaten

Sailing vessel with three or more masts. Square rigged on foremast, fore and aft rigged on all others.

A sail set forward of the foremast on the headstay; a foresail

A capacity measurement equal to one-fourth of a barrel.

A vessel designed for the transport of people or goods from one place to another on a regular schedule.

The relationship of flow per unit area to differential pressure across a filter medium.

Cargo discharged in excess of the quantity on the manifest.

Ice pack whose limits cannot be seen from ship.

The highest operating pressure the system or component is designed to withstand.

The permitted increase in pressure developed after the valve has opened. Usually expressed in percentage, ie.; 3% accumulation (A.S.M.E. Code, Section I). Flows through safety/relief valves are officially determined at these overpressure conditions.

Direction from which the wind is blowing; an unsailable sector between close hauled headings.

An act of Congress (1903) prohibiting rebates, concession, misbilling, etc. and providing specific penalties for such violations.

The oxidation of conventional hydrocarbon lubricants when they reach the end of their useful life and begin to breakdown. Can cause operating temperature increase, increase brake horsepower and plugs separator, can destroy air end.

See Heave To

The top point of the line about which the earth rotates.

The highest level of cube utilization that can be achieved when loading cargo into a container.

A type of clutch which has a spring loaded jaw or detented rolling element to control torque in an assembly tool.

Steering; keeping the ship on the course given (no lazy steering).