Lowrance LMS-522c iGPS Installation And Operation Instructions Manual page 118

Speed (ground speed) is the velocity you are making over the ground.
(If you wish, you can customize the Speed data box to display Closing
Speed instead. Closing Speed is also known as velocity made good. It's
the speed that you're making toward the waypoint. For instructions,
see the Customize Page Displays entry in Sec. 8.)
Track is the heading, or the current direction you are actually travel-
ing. Bearing is the direction of a line-of-sight from your present posi-
tion to the destination. No matter what direction you are steering, the
Bearing window shows the compass direction straight to the destina-
tion from your location at the moment. Distance shows how far it is to
the waypoint you're navigating toward.
The Off Course window shows the current cross track error. This shows
the distance you are off-course to the side of the desired course line. The
course line is an imaginary line drawn from your position when you
started navigating to the destination waypoint. The course line is shown
on the Navigation Page screen (and the Map Page screen) as a dotted line.
Left cross track error line
Current track or
heading, shown
in degrees
Compass bearing
to destination
Trail line
Navigation
information
displays
in data
boxes
The cross track error range is shown on the compass rose as a wide,
white, corridor enclosing the course line. The outer edges of this white
corridor represent lines that show the current cross track error range.
The default for the cross track error range is 0.20 miles.
For example, if the present position symbol touches the right cross
track error line, then you are 0.20 miles to the right of the desired
course. You need to steer left to return to the desired course.
Course line
Heading arrow
Navigation Page.
108
Bearing
arrow
Waypoint
symbol
Cross track
error range
(off course
indicator)
Destination
name