Sailing with the motor on and in gear

The ratio of the actual water-vapor partial pressure to its saturation pressure at the same temperature. (considered only with atmospheric air).

Is a standardized method to determine the carbon formation characteristics of compressor lubricants.

The outer layer on a coalescing filter that prevents separated liquids from re-entering the air stream. Also known as anti re-entrainment barrier.

The breaking-up of paint into fine particles or droplets by a paint gun using compressed air.

A group of points to which rates are made the same as or in relation to rates to other points in group.

The alternating motion of a boat, leaning alternately to port and starboard; the motion of a boat about its fore-and-aft axis.

A strong tropical revolving storm of force 12 or higher. In the northern hemisphere hurricanes revolve in a clockwise direction. In the southern hemisphere these storms revolve counterclockwise and are known as typhoons.

Said of a man who goes to sea as a rating compared with officers, and lives forward. Forward of a mast.

: Regular ship shaped vessel, production ship. Positioned by anchors or dynamic positioning. Has its own propulsion machinery.

A mechanical barometer used to measure air pressure for warnings of changing weather.

Area of high barometric pressure where the wind circulates clockwise in the Northern Hemisphere, and counter-clockwise in the Southern Hemisphere. These are fair weather systems with light or moderate winds.

A label required on shipments of flammable articles.

A method of payment for goods in which cash is paid at the time of order and the transaction becomes binding on both buyer and seller.

To keep close.

It is the weight of the column of air existing above the earths surface at 45

Complete encirclement of a cleat, bollard, pin or winch by a line.

To coil flat down on deck, each fake outside the other, beginning in the middle and all close together.

Amount of time for a compressor to complete one cycle.

An expression used to the crew to indicate that the boat is about to tack.