Electro-mechanical steering device; an instrument designed to control automatically a vessel's steering gear so that she follows a pre-determined track through the water.

Defense Fuel Support Center

Also known as "power towers," these use fields of two-axis tracking mirrors known as heliostats. Each heliostat is individually positioned by a computer control system to reflect the sun's rays to a tower-mounted thermal receiver. The effect of many helio ...

A term used by the London Stock Exchange to denote that a transaction was reported using the block.

Same as bipolar electrode.

A large, flat bottomed boat used to carry the mud from a dredge.

The reaction of a metal or alloy with a sulfur-containing species to produce a sulfur compound that forms on or beneath the surface on the metal or alloy.

A liquid-in-glass thermometer which uses an organic substance such as alcohol as the thermometer liquid. This type of thermometer has a low freezing point and a high coefficient of expansion. It is less accurate, however, than a mercury thermometer.

Major energy consuming sectors of the economy. The Commercial Sector includes commercial buildings and private companies. The Industrial Sector includes manufacturers and processors. The Residential Sector includes private homes. The Transportation Sector ...

A type of High-Intensity Discharge (HID) lamp that uses sodium under high pressure as the primary light-producing element. These high efficiency lights produce a golden white color and are used for interior industrial applications, such as in warehouses a ...

Transverse or longitudinal partitions separating portions of the ship ("walls" in a ship).

A container that holds rock used as the thermal mass to store solar energy in a solar heating system.

Programmable Read-Only Memory. Read-only memory which can be programmed by the user using a special hardware programmer.

A gangway or gangplank. Used to cross from one ship to another, or from a ship to a pier.

The energy lost from the movement of a fluid in a conduit (pipe) due to the disturbances created by the contact of the moving fluid with the surfaces of the conduit, or the additional pressure that a pump must provide to overcome the resistance to fluid f ...

A guarantee issued by a bank on behalf of a seller to a buyer to support the sellers bid or tender for a contract. If the sellers bid is accepted, and they fail to sign a contract, the buyer can claim compensation under the guarantee.

Tuesday 29th October 1929 when stock prices on Wall Street.

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

In water transportation, the time it takes between the arrival of a vessel and its departure.

An area of low barometric pressure, with its attendant system of winds. Also called a depression or cyclone.