GNSS

Global Navigation Satellite System — the umbrella term covering all satellite positioning constellations: GPS (USA), GLONASS (Russia), Galileo (EU), and BeiDou (China).

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Related G-terms

Grommet

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

G.M.T.

Greenwich Mean Time — the mean solar time at the prime meridian in Greenwich, London. Now …

GPS

Global Positioning System — the US satellite constellation whose signals let a receiver co…

Ground tackle

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

Genoa

A large headsail whose clew overlaps the mast, giving extra upwind drive compared with a w…

Gooseneck

The articulated fitting that joins the forward end of the boom to the mast, allowing the b…

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