Rocks & mirror

WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

G

178 results

Galley

marine

A kitchen on a ship. The galley and the messroom are usually on the same deck. It is ideal to have provision stores at the same level. If this is not possible, direct stairs should connect the galley and provision stores.

Gallium arsenide

energy

Gallium arsenide is used in the manufacture of devices such as microwave frequency integrated circuits, monolithic microwave integrated circuits, infrared light-emitting diodes, laser diodes, solar cells.

Galvanic cell

energy

A galvanic cell or voltaic cell is an electrochemical cell in which an electric current is generated from spontaneous redox reactions.

Galvanic corrosion

energy

Galvanic corrosion (also called bimetallic corrosion or dissimilar metal corrosion) is an electrochemical process in which one metal corrodes preferentially when it is in electrical contact with another, in the presence of an electrolyte.

Galvanizing

marine

Coating metal parts with zinc for protection against rusting.

Gamma ray

energy

A gamma ray, or gamma radiation is a penetrating form of electromagnetic radiation arising from the radioactive decay of atomic nuclei.

Gangway

marine

1. A narrow portable platform used as a passage by persons entering or leaving a vessel moored alongside a pier or quay. 2. A raised walkway between superstructures such as the forecastle and the bridge or between the bridge and the poop.

Gansu wind farm

energy

The world’s biggest wind farm, with a planned installed capacity of 20GW.

Garbage

marine

Garbage means all kinds of victual, domestic and operational wastes generated during the normal operation of a ship and liable to be disposed of on regular basis or periodically. It does not include fresh fish and parts thereof or sewage.

Garbage collection craft BATELLO ECOLOGICO

marine

The Italian Ministry of Environment ordered 30 fast boats for removing rubbish and floating debris from protected coastal areas. The first craft was delivered in 2003.

Garbage Management Plan

marine

All ships of tonnage 100 gross or above as well as every ship which is certified to carry 15 persons or more, must have a Garbage Management Plan.

Garbage processing equipment

marine

Incinerators, compactors, communiters or other devices for shipboard garbage processing.

Garbage Record Book

marine

Ships with a Garbage Management Plan are also required to have a Garbage Record Book on board in a place where it can be easily inspected.

Gas

energy

A gas is a compressible fluid.

Gas carrier cargo handling

marine

Typical operation cycle of most refrigerated type liquefied gas carriers includes drying, inerting, cooling down, preparation work prior to loading, loading, laden voyage, unloading, ballast voyage, stripping, warming up and gas freeing.

Gas carrier standards

marine

The design standards defined by the International Gas Carrier Code (IGC Code).

Gas carrier types

marine

Gases can be liquefied by using one of the following methods: 1. Pressurization under normal temperature. 2. Refrigeration and pressurization. 3. Refrigeration under atmospheric temperature.

Gas carrier, gas tanker

marine

Gas carriers are tankers intended to carry different liquefied gases used for energy purposes (petroleum gases, natural gases), in the chemical industry or used as a raw material for making agricultural fertiliser (ammonia).

Gas centrifuge

energy

A gas centrifuge is a device that performs isotope separation of gases.

Gas cylinder

marine

Bottle of the capacity up to 150 liters, charged with gases in special filling stations.

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