Uniden MYSTIC English Owners Manual - Page 116

Mystic OM.book Page 114 Wednesday, October 22, 2003 8:59 PM GPS Glossary Active Leg Altitude BRG Buoy COG Coordinates CTS Datum The segment of a route currently being traveled. The current elevation above sea level. Bearing. The compass direction from your position to a destination, measured to the nearest degree. A navigation aid (usually found in marine charts) that is floating in water. The position can vary due to the magnitude and direction of the current. Course Over Ground. The direction the receiver is moving. COG can be reported in true or magnetic north values. A unique numeric or alphanumeric description of the position. Course to Steer. The direction you should be traveling in order to return to the course while proceeding towards the destination. It is a "compromise" course bearing that projects from your current position to a point on the courseline midway between a point perpendicular to your position and the current leg destination waypoint. Refers to the theoretical mathematical model of the earth's sea level surface. Map makers may use a different model to chart their maps, so position coordinates will differ from one datum to another. The datum for the map you are using can be found in the legend of the map. If you are unsure of which datum to use, use WGS84. 114