A small, specialized piece of gear. See gilhickey.
1) The spar aloft on the traditional four-sided gaff rig. See rig. 2) A pole with a sharp hook used to retrieve fish from the water.
Wind speed of 34 to 47 knots.
A boat's kitchen. A galley strap is a length of webbing that holds the cook in the galley as the boat heels.
gallows frame, gallows
A permanently installed support for the main boom. Compare with boom (boom crutch).
gangway, boarding gate
An opening in the lifelines or rail, or a ramp that facilitates boarding a boat or a pier.
A sturdy line rigged to the top of the mainmast and used to haul gear or a crewmember in the boatswain's chair aloft when the main halyard is unavailable. Except in emergencies, it is not used to hoist sails. Compare with halyard.
The boat's bottom near the keel.
Gasoline or cooking fuel.
A sail stop, a strap or line used to secure a furled sail.
Boating equipment and clothing small and portable enough to be removed from the boat. While a mast and a tuna tower are not gear, a masthead fly and a fishing rod are. Foul-weather gear is clothing specific to boating. Fishing gear consists of the equipment needed for fishing.
A device for generating electricity. It may be an engine (also called a genset), a propeller in the air (wind generator), a propeller toward astern, or a solar panel that converts solar rays to energy.
A trademarked name ("genoa" plus "spinnaker") for a type of asymmetrical or cruising spinnaker.
A large overlapping jib, reportedly first publicly used off Genoa, Italy.
An engine-powered generator.
A light line holding a halyard away from a mast to prevent it from clanging.
A support for a compass, table, or other object that automatically keeps it level as the boat heels and rolls. The main eating table in a sailboat may be a gimbaled table (swing table).
Stretch or bend.
1) Change position. When a boat alters course to allow another vessel to pass she gives way. Under the Navigation Rules (rules of the road), the give-way vessel (formerly burdened vessel) is obligated to alter course when two or more vessels are near each other in order to avoid collions. Compare with stand on. 2) When gear gives way it breaks.
1) Fiberglass. 2) The glass is the barometer.
Global Maritime Distress and Safety System
An international electronic alert system.
Global Positioning System, GPS, satnav
An electronic navigation instrument, using information from satellites, that computes and displays the boat's position and information about her course and speed made good. Satnav was the first of these systems. Differential GPS is the most accurate. See selective availability (S.A.).
GMT, Greenwich Mean Time, Zulu
The time at the Greenwich meridian, or zero degrees longitude.
go about, come about
A luxurious boat.
gong, gong buoy
See buoy, buoyage.
The fitting securing the boom to the mast. A sliding gooseneck slides on a track on the mast.
A channel marker or other buoy set by the Coast Guard or other government agency to serve as an aid to navigation.
Global Positioning System.
See abandon ship.
A mistied square knot. It will slip.
grapnel anchor, grapnel hook
A light, multipronged hook used as a lunch hook or to drag for objects. See anchor.
great circle route
The shortest route between two distant points on the globe. This rhumb line is shown as a straight line on a globe or on a gnomic projection chart, but on a Mercator projection chart it is a curve. Under way, the boat makes a series of small course changes in order to stay on the route.
Greenwich meridian, Greenwich Mean Time, GMT
See prime meridian and Zulu.
To grind a winch is to turn its handle. A grinder is a crewmember who grinds. A coffee grinder (grinder) is a winch operated by a standing crewmember.
grommet, lacing eye, eyelet
A small metal ring inserted in a sail, boat cover, or other cloth. Smaller and lighter than a cringle, it is used by reef points or tie-down lines.
grooved (slotted) headstay, grooved (slotted) mast
A groove in the aft side of a headstay or mast into which a sail's boltrope or slugs are fed. A double-grooved headstay allows a new jib to be set before the old one is lowered.
gross tonnage rule
An unofficial safety advisory that suggests that smaller vessels, regardless of their rights under the formal Navigation Rules, should always stay clear of big ones.
Long waves that run almost continuously due to prevailing winds. Compare with swell.
Protection in a boat, intended to prevent damage caused by a lightning strike.
The anchor, its rode, and related equipment.
gunkhole, mud hole
A creek, cove, marsh, or other shallow corner in the shore. Gunk means mud. To gunkhole or go gunkholing is to explore such places in a boat, although sometimes these terms are used to mean going ashore to explore on foot.
Pronounced "gunnel". See rail.
A sudden, strong puff of wind.
A line used to position a spinnaker pole or other spar. The afterguy controls a spinnaker pole's fore-and-aft position, the foreguy holds it down. To guy (guy back) the pole is to pull on the afterguy.
See jibe, gybe.