Gain - A positive outcome
Category: - Risk

Gale - A strong wind. A gale warning is issued for expected winds of 34 to 47 knots (65 -100 km/h) over the water.
Category: - Risk - Weather

Galley - The shipÂ’s kitchen
Category: - Maritime

Galvanizing - Coating metal parts with zinc for protection from rust.
Category: - Maritime

Gangway - A narrow portable platform used as a passage, by persons entering or leaving a vessel moored alongside a pier or quay.
Category: - Maritime

GDP - Gross Domestic Product: The total value of goods and services produced by a nation over a given period, usually 1 year.
Category: - Acronym

General Cargo - A non-bulk oil cargo composed of miscellaneous goods.
Category: - Maritime

Geocleaning - The process of connecting errors in a georeferenced database.
Category: - GIS

Geocode - A location in geographic space converted into computer-readable form. This usually means making a digital record of the point's coordinates.
Category: - GIS

Geocoding - The conversion of analog maps into computer-readable form. The two usual methods of geocoding are scanning and digitizing.
Category: - GIS

Geodesic curve - The shortest path between two points on a (smooth) surface is called a geodesic curve on the surface. On a flat surface the geodesics are straight lines, on a sphere they are great circles.
Category: - GIS

Geographical - Of or pertaining to the earth's surface.
Category: - GIS

Geographic Coordinates - The latitude and longitude coordinate system.
Category: - GIS

Geographic Information Science - The scientific use and study of methods and tools for the capture, storage, distribution, analysis, display, and exploitation of geocoded information.
Category: - GIS

Geographic Information System - Geographic Information System: A special case of information systems where the database consists of observations on spatially distributed features, activities or events, which are definable in space as point, lines, or areas. A geographic information system manipulates data about these points, lines, and areas to retrieve data for ad hoc queries and analyses. (Dueker's Definition)
Category: - GIS

Geographic Property - A characteristic of a feature on earth, usually describable from a map on the feature, such as location, area, shape, distribution orientation, adjacency, and so on.
Category: - GIS

GEOIDE - Geomatics for Informed Decisions; Canadian (NCE) National Centre of Excellence for research in Geomatics: GEOIDE is a research network established in order to consolidate Canadian expertise in geomatics. As a federally funded Network of Centres of Excellence, GEOIDE brings together many of the country's leading experts from academic, government and industrial institutions.
Category: - GIS - Acronym

Geomatics - Geomatics is a field of activities which, using a systematic approach, integrates all the means used to acquire and manage spatial data required as part of scientific, administrative, legal and technical operations involved in the process of the production and management of spatial information. (Canadian Institute of Geomatics)”
Category: - GIS

Geometric Test - A test to establish the spatial relationship between features. For example, a point feature can be given a point-in-polygon test to find if it is "contained" by an area.
Category: - GIS

GEOREF - The World Geographic Reference System (GEOREF) is used for aircraft navigation and is based on latitude and longitude. The globe is divided into twelve bands of latitude and twenty-four zones of longitude, each 15° in extent. These 15° areas are further divided into one degree units identified by 15 characters.
Category: - GIS - Acronym

Gimball - A device that suspends a compass so that it remains level
Category: - Maritime

GIS - Geographic Information System: A special case of information systems where the database consists of observations on spatially distributed features, activities or events, which are definable in space as point, lines, or areas. A geographic information system manipulates data about these points, lines, and areas to retrieve data for ad hoc queries and analyses. (Dueker's Definition)
Category: - GIS - Acronym

Global Maritime Distress and Safety System - "The Global Maritime Distress and Safety System (GMDSS) is an automated ship to shore distress alerting system that relies on satellite and advanced terrestrial communications links. The system also provides some limited ship to ship communications capabilities. "
Category: - Maritime - Risk - SAR

Global Positioning System - The GPS is a satellite based navigation system. It is used both on the ground by SAR Techs and in all of the SAR aircraft. GPS enables crews to be within a few hundred meters of a location. It is especially useful in the north, where a lack of obvious visual features, trees, mountains, often hampers navigation.
Category: - Maritime - SAR

GMDSS - "The Global Maritime Distress and Safety System (GMDSS) is an automated ship to shore distress alerting system that relies on satellite and advanced terrestrial communications links. The system also provides some limited ship to ship communications capabilities. "
Category: - Maritime - Risk - Acronym - SAR

GNP - Gross National Product: Gross Domestic Product (GDP) plus the net income accruing from foreign sources.
Category: - Acronym

Gooseneck - A device that connects the boom to the mast
Category: - Maritime

GPS - Global Positioning System: The GPS is a satellite based navigation system. It is used both on the ground by SAR Techs and in all of the SAR aircraft. GPS enables crews to be within a few hundred meters of a location. It is especially useful in the north, where a lack of obvious visual features, trees, mountains, often hampers navigation.
Category: - Maritime - Acronym - SAR

Graduated Symbol Map - A map type that varies the size of a common geometric symbol to show the amount of an attribute at points or at centroids of areas. For example, cities could be shown with circles of area proportional to population, or census tracts could have a proportional circle divided as a pie chart at a representative point inside the tract.
Category: - GIS

Graticule - The latitude and longitude grid drawn on a map or globe. The angle at which the graticule meets is the best first indicator of what projection has been used for the map.
Category: - GIS

Grating - Light platform or walkway built up of metal bars, used for access to machinery.
Category: - Maritime

Graving Dock - An arrangement for getting vessels out of the water so that bottom work can be done. Usually a slip is dug in the shore, a vessel is floated in, a wall is placed across the open end of the slip and the water is pumped out of the 'tank'. Often used for very heavy objects.
Category: - Maritime

Great Circle Route - The shortest path (on the surface) between two points on the globe, used for ship navigation.
Category: - GIS

Great Lakes Ship - Cargo ship developed to carry raw materials and manufactured goods on the Great Lakes. Most carry bulk cargoes of grain, iron ore or coal.
Category: - Maritime

Grid Cell - A single cell in a rectangular grid.
Category: - GIS

Grid Extent - The ground or map extent of the area corresponding to a grid.
Category: - GIS

Griffon - The Griffon (CH-146) is the newest edition to the military aircraft fleet. It is a variant of the civilian Bell 412. It is painted camouflage colors because its primary mission is support to the army and SAR support to Canada's F18 fighter squadrons, although it will readily respond to any SAR incident. The Griffon can be equipped with forward looking infrared (FLIR) which enables it to seek out aircraft and personnel by the heat they give off, making it an ideal search aircraft. In its SAR configuration, the Griffon's crew consists of two Pilots, one Flight Engineer and one Search and Rescue Technician.
Category: - SAR

Gross Domestic Product - The total value of goods and services produced by a nation over a given period, usually 1 year.
Category: - General

Gross National Product - Gross Domestic Product (GDP) plus the net income accruing from foreign sources.
Category: - General

Gross Registered Ton - "(GRT) A measure of vessel capacity (in cubic feet) of the space within the hull, and of enclosed spaces above deck, available for cargo, stores, fuel, passengers and crew, with certain exclusions. One hundred cubic feet is equivalent to one gross ton. "
Category: - Maritime

Gross Ton - "(GRT) A measure of vessel capacity (in cubic feet) of the space within the hull, and of enclosed spaces above deck, available for cargo, stores, fuel, passengers and crew, with certain exclusions. One hundred cubic feet is equivalent to one gross ton. "
Category: - Maritime

Grounding - To touch bottom and become stranded.
Category: - Maritime - Risk

Ground Search And Rescue Incident - Any incident not otherwise classified as an aeronautical or maritime incident and involving missing persons or persons in distress. "incident de recherche et sauvetage au sol"
Category: - SAR

Ground Tackle - The anchor, chain and rode.
Category: - Maritime

GRT - "(Gross Registered Ton) A measure of vessel capacity (in cubic feet) of the space within the hull, and of enclosed spaces above deck, available for cargo, stores, fuel, passengers and crew, with certain exclusions. One hundred cubic feet is equivalent to one gross ton. "
Category: - Maritime - Acronym

Gudgeons - Bosses on stern post drilled for pins (Pintles) on which rudder swings.
Category: - Maritime

Gulf Stream - A warm, relatively swift and narrow ocean current that runs up the east coast of North America, south of Newfoundland and into the North Atlantic.
Category: - Maritime - Weather

Gunwale - The railing of the boat at deck level; The junction of deck and shell at top of sheer strake.
Category: - Maritime

Gust - A sudden, brief increase in wind speed, generally less than 20 seconds.
Category: - Weather

Gyro-Compass - A mechanical compass operated by means of a gyroscope. This compass indicated true north rather than magnetic north.
Category: - Maritime