A ship with one or more decks, having ability to carry a variety of commodities in different forms such as boxed, palletized, refrigerated, and with the possibility to accommodate bulk materials such as grain.

The General Conference on Weights and Measures is the supreme authority of the International Bureau of Weights and Measures, the inter-governmental organization established in 1875 under the terms of the Metre Convention through which Member States act together on matters related to measurement science and measurement standards.

A sound signal of seven short blasts and one prolonged blast given with the vessel sound system.

Operational and public correspondence traffic, other than distress, urgency and safety messages, conducted by radio (SOLAS).

A generation II reactor is a design classification for a nuclear reactor, and refers to the class of commercial reactors built until the end of the 1990s.

A Generation III reactor is a development of Generation II nuclear reactor designs incorporating evolutionary improvements in design developed during the lifetime of the Generation II reactor designs.

Gen III+ reactor designs are an evolutionary development of Gen III reactors, offering improvements in safety over Gen III reactor designs.

Generation IV reactors (Gen IV) are a set of nuclear reactor designs currently being researched for commercial applications by the Generation IV International Forum.

A machine which converts mechanical power into electrical power for use in an external circuit

Modern large wind turbines are variable-speed machines.

Gensets consist of a medium-speed prime mover, connected to a generator via a flywheel and coupling, mounted on a common baseframe.

During contruction of buildings with a slab floor an area of similar size is and deepr than 1m is insulated on all six sides and pipework is used to transfer solar energy for storage and retrieval.

Geochemistry is the science that uses the tools and principles of chemistry to explain the mechanisms behind major geological systems such as the Earth's crust and its oceans.

A system that utilizes renewable thermal energy in the shallow subsurface to extract or reject heat.

The process of capturing carbon dioxide and compressing it to its liquied form before injecting into pourous rock formations in geologic basins

Geologic overpressure in stratigraphic layers is caused by the inability of connate pore fluids to escape as the surrounding mineral matrix compacts under the lithostatic pressure caused by overlying layers.

The geologic time scale is a system of chronological dating that classifies geological strata (stratigraphy) in time.

Geology is an Earth science concerned with the solid Earth, the rocks of which it is composed, and the processes by which they change over time.

Geometric Dimensioning and Tolerancing is a system for defining and communicating engineering tolerances.

The use of geophysical techniques – electric, gravity, magnetic, seismic or thermal – in the search for economically valuable hydrocarbons, mineral deposits or water supplies or to gather information for engineering projects.