gaff
A metal pole with a hooked end used to boat a fish. Also a pole or spar that holds the upper portion of a four-sided sail.
galley
The kitchen area on a boat.
gelcoat
A combination of resin and pigment that comprises the smooth outside coating of a fiberglass boat.
genoa
An overlapping jib.
genset
Another name for a gas- or disel-powered electric generator.
give way
Yield to other traffic.
GPS
Acronym for global positioning system, a satellite-based navigation system that uses trasmitted signals and mathematical triangulation to pinpoint location.
gross axle weight rating (GAWR)
The maximum weight an axle is designed to carry.
gross combined weight rating (GCWR)
The maximum allowable weight of a fully loaded tow vehicle plus its fully loaded trailer, including passengers and cargo.
gross trailer weight rating (GTWR)
The maximum allowable weight of trailer and its cargo.
gross vehicle weight rating (GVWR)
The maximum allowable weight of a fully equipped tow vehicle including passengers and cargo.
gunkhole
To explore creeks, coves marshes or other shallow areas near shore.
gunwale
The upper edge of the side of a boat.
gybe
Also spelled jibe. To change the course of a boat so that the boom swings over to the opposite side.