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Basics
INTRODUCTION
4
NORTH
“ACTIVE FROM”
WAYPOINT
NORTH
DTK
CROSSTRACK ERROR
BRG
TRK
GROUND SPEED
DISTANCE
“ACTIVE TO”
WAYPOINT
“ACTIVE LEG”
The GPS 125 Sounder provides steering guidance and
navigation information using degrees, a measurement mea-
sured in a clockwise direction from a north reference. North
is described as 000º, east as 090º, south as 180º, and west as
270º. The diagram and compass rose below provide a graphic
illustration of the navigation terms used by the GPS 125
Sounder. More information on basic navigation and GPS are
available at your local library or bookstore.
125 Man Rev B 7/23/98 11:47 AM Page 4