G.M.T.

Greenwich Mean Time — the mean solar time at the prime meridian in Greenwich, London. Now superseded by UTC (Coordinated Universal Time).

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Related G-terms

Ground tackle

The collective name for the anchor and its rode (chain, warp, swivels, and shackles).

Galley

The cooking area below decks, typically containing a gimballed stove, sink, refrigeration,…

Great Circle

The shortest path between two points on the Earth's surface — an arc of a circle whose pla…

Grommet

A reinforced ring — usually brass or stainless — set into a sail or cover to accept a line…

GRIB file

A compact binary weather-data format (Gridded Binary) used to download forecast wind, pres…

Give way vessel

Under the COLREGs, the vessel that is required to keep out of the way of another when risk…

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