An automatic weather station (AWS) is an automated version of the traditional weather station, either to save human labour or to enable measurements from remote areas.

A method to reduce the human interaction with systems by use of computer programs or robotics.

Unconventional automatic mooring systems designed to reduce harbour time for ferries. The mooring operation is controlled automatically from the wheelhouse reducing personnel requirements. See also IRONSAILOR.

An automotive thermoelectric generator (ATEG) is a device that converts some of the waste heat of an internal combustion engine (IC) into electricity using the Seebeck Effect.

A stand-alone generation system that has no backup generating source.

On two-stroke diesels, electrically-driven auxiliary blowers are usually provided because the exhaust gas-driven turbo-charger cannot provide enough air at low engine speed. Auxiliary blowers are internal parts of the main engine.

A boiler that supplies steam for essential auxiliary purposes but not for main propulsion.

A supplemental source of heating to provide additional heat to assist a geothermal heating and cooling system.

A term applied collectively to all machinery and apparatus forming the nonpropulsive equipment of a ship.

Propulsion system that consists of a medium-speed diesel engine, a reduction gear with Power Take In (PTI) drive, a shaft generator, and CP propeller. In normal operation at sea the CP propeller is driven...

The WÄRTSILÄ® Auxpac is a generating set designed for auxiliary power generation in commercial type vessels. It is a pre-commissioned standard package that ensures the availability of electrical power in sufficient quantity as and when it is needed.

The availability factor of a power plant is the amount of time that it is able to produce electricity over a certain period, divided by the amount of the time in the period.

An avalanche photodiode (APD) is a highly sensitive semiconductor photodiode that exploits the photoelectric effect to convert light into electricity.

1. This is the marine insurance term for a partial loss. Particular charges are not to be included when calculating average. 2. The numerical result obtained by dividing the sum of two or more quantities by the number of quantities.

In general, average affairs adjusters are entrusted with the task of apportioning the loss and expenditure over the parties interested in the maritime venture and to determine which expenses are to be regarded as average or general average.

Seasonal average versus peak Energy Efficiency Ratio (EER) or Coefficient Of Performance (COP).

The mean wind speed over a specified period of time.

An aviation biofuel or bio-jet-fuel or bio-aviation fuel is a biofuel used to power aircraft and is said to be a sustainable aviation fuel.

Description of the situation when the anchor has just been lifted from the seabed.

Sheets of canvas or similar material, erected above weather decks to provide shade and shelter.