A gauge that measures air flow as a percentage of capacity, used in rotary screw compressors as an estimator during modulation controls.

The ring bolted to the upper end of the shank of an anchor and to which the bending shackle secures.

A stationary vessel carrying a light used for navigation, serving the same purpose as a lighthouse.

Most ocean freight is billed on the basis of weight or measurement tons (W/M). Weight tons can be expressed in short tons of 2000 pounds, long tons of 2240 pounds or metric tons of 1000 kilos (2204.62 pounds). Measurement tons are usually expressed as car ...

Secure hatches and loose objects both within the hull and on deck.

A pin placed through the head of a rudder to prevent it from being lost.

Cargo discharged in excess of the quantity on the manifest.

The action of letting go the sheets of a sailing vessel, thus spilling the wind and reducing the forward motion of the boat.

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.

Having no sails up. In heavy weather the windage of the mast and other spars can still be enough to move the boat.

Nickname for a ship's cooper.

Alternatively letting the sails draw, then spilling wind so as to keep a vessel more or less in one place until space is available, marking time.

Official terminology for life jacket. When properly used a PFD will support a person in the water. Also called a life jacket, life preserver or life vest.

An air flow caused by a fan that draws air through the heat exchanger core in a uniform pattern to dissipate the sensible heat.

Any person or entity who, in a contract of carriage, undertakes to perform or to procure the performance of carriage by rail, road, sea, air, inland waterway or by a combination of such modes.

A propeller drawn through the water that operates a meter on the boat registering the speed and distance sailed

The bridge used for taking observations, or directing the handling of the ship.

A lubricating oil made with synthetic base stocks.

Board, bearing instructions, that comes to a wrecked ship with a life-saving rocket line.

On square-rigged ships, the blocks attached to those yards on which studdingsails were set.