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CROSS TRACK ALARM
ARRIVAL ALARM
mile of a recalled waypoint if
the arrival alarm’s setting is .1
mile. We’ve drawn the imagi-
nary arrival alarm radius on the
screen at right. As you can see,
the present position symbol
hasn’t reached the circle. When
it does, the arrival alarm will
sound. The alarm is adjustable
from .010 to 9.99 miles.
XTE ALARM
The XTE (cross track error)
alarm sounds a tone when your
cross track error is greater than
the alarm’s setting. As shown
on the map at right, the boat’s
cross track error is 3/4 mile. If
the XTE alarm is set to 1 mile,
the alarm sounds, (shown by
an imaginary line on the screen
at right) letting you know how
far off course your present po-
sition is. This alarm is adjust-
able from .010 to 9.99 miles.
ANCHOR ALARM
The anchor alarm sounds a tone
when the present position
moves outside a preset radius.
For example, if you set the an-
chor alarm to .1 nautical mile
(600 feet), then the alarm will
sound if you move more than
600 feet from the location where
you set the alarm. It’s adjust-
able from 0.01 to 9.9 miles. On
the map at the bottom of the
previous page, the anchor
alarm is set to .5 miles. If the boat moves outside the .5 mile circle, the
anchor alarm sounds a tone.