Lowrance LMS-480 Operation Instructions Manual page 113

When navigating to a waypoint, the Navigation screen looks like the
following figure. Your ground speed, track, distance and bearing to
waypoint, and course are all shown digitally on this screen.
NOTE:
Remember, when the Speed, Track and Position information dis-
plays are flashing, satellite lock has not been achieved and no posi-
tion fix has been determined. A question mark will also flash on the
present position arrow in the center of the compass rose.
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 position
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
Navigation Page, going to a waypoint while creating a new trail.
Course line
Heading arrow
105
Bearing
arrow
Waypoint
symbol
Cross track
error range
(off course
indicator)
Destination
name