(1) A small wooden cask in which grog was carried. (2) A type of marine steam reciprocating engine where two engines were used together on the same propeller shaft.

Allows foreign merchandise arriving at one port to be transported in bond through the U.S. to be exported from another port, without paying duty.

The temperature of the air as measured by a standard thermometer.

A solar collector in which the absorber is contained in a sealed glass tube, thereby providing for relatively high temperature heat gain.

The Chancellor of the Exchequer's least favourite part of the economy - also known as the cash.

A 1792 trade agreement banding the original 24 brokers in New York together into an investment.

A person whose business is to act as an agent on behalf of the shipper. A freight forwarder frequently makes the booking reservation.

A filter element so full of contaminants that no longer can pass rated flow without excessive pressure differential.

A metal pin by which the plating and other parts of iron and steel vessels are joined. Rivets are known by their heads, such as: Flush, pan, snap, plug, tap, countersunk, mushroom, and swollen neck.

A method of controlling a wind turbine's speed by varying the orientation, or pitch, of the blades, and thereby altering its aerodynamics and efficiency.

A market in which prices are rising and in which investor confidence in the continuation of rising.

An itemized list of goods shipped to a buyer, stating quantities, prices, shipping charges, etc.

International Securities Identification Number International code for a listed.

A knot used to form a knob in the end of a line to prevent the end from running through a block or other narrow space.

An indicator which signals the difference in pressure between any two points of a system or a component.

A navigational aid used in the United States and Canada to mark a channel. Green triangular daymarks should be kept on the left when returning from a larger to smaller body of water.

The alternate rise and fall of the bow of a vessel proceeding through waves.

An agreement made in Bretton Woods, USA in 1944 which established a post war fixed currency rate.

A bonus declared by life companies when maturity of a with profits policy or death of the assured.

This property is the ratio of the specific weight of air or gas to that of dry air at the same pressure and temperature.