A B C D E F G H I J K L M N O P Q R S T U V W

 

Galley

Kitchen on board

Gennaker

A cross between a spinnaker and genoa, used for broad reaching.

GMT

Greenwich Mean (or Meridian ) Time is the average time that the earth takes to rotate from noon-to-noon. The Greenwich Meridian (Prime Meridian or Longitude Zero degrees) marks the starting point of every time zone in the world.

GPS

Global Positioning System. Satellite navigation system that fixes a position on the earth's surface by comparing the minute time differences between signals transmitted from a selection of satellites and a controlling ground station. For the Volvo Ocean Race, navigators have to carry sextants and know how to use them in order to use conventional sun or star sight navigation if there is a catastrophic breakdown of GPS either on the boat or in the system itself.

Grinder

Crew member who is using the pedestal system in the cockpit to apply force to the winches. Also the winch system itself that is operated by the pedestal system the grinder pedestal.

Gust

Sudden increase in wind velocity

Guy

Also the line used to control the outboard end of the spinnaker pole, running from the sail. Certain nations, particularly Australians and New Zealanders, call the guy a brace, which is in fact more likely to be correct, coming as it does from square rig terminology where the braces were used to turn the yard arms of a ship so that the wind caught the sails in the correct way.

Gybe

To change direction by turning so that the stern of the boat passes through the wind. This means that the sails, particularly the mainsail, can swing across with great force; gybing has to be approached with care