NorthStar 957 Operator's Manual page 81

957 Operator's Manual, Rev. B
The avoidance alarm is only as an extra safety feature to help
alert you to possible hazards. It doesn't replace local knowl-
edge, proper use of charts, the person on watch, or any other
aspects of good seamanship that are required to safely navi-
gate.
The waypoint is treated as an avoidance point only if you specify a warn-
ing radius larger than zero. In other words, just assigning a waypoint with
the slashed circle symbol doesn't mean the 957 will treat that waypoint
like an avoidance point. Also, you must turn on the 957's avoidance area
alarm (see "Setting the avoidance-area alarm" on page 74).
To make a new waypoint into an avoidance area:
1. Press the
WAYPOINTS key.
2. Press the ADD menu key to display the NEW WAYPT
screen.
3. Enter a distance in the WARN RADIUS box at the bottom
of the screen. The warning radius can be as large as 4.9
nautical miles. Be sure to allow a little extra distance
around the hazard area so you'll have time to respond, by
turning or stopping after you hear the alarm, and to allow
for the typical accuracy of the navigation source in use.
To make an existing waypoint into an avoidance area:
1. Press the
WAYPOINTS key. If necessary, press the NEXT VIEW
menu key to display the waypoint list screen.
2. Use the CURSOR PAD to select the desired waypoint,
then press the EDIT menu key.
Chapter 6 - Understanding the Waypoints Function
CAUTION!
NOTE:
WAYPTS/ROUTES
WAYPTS/ROUTES
key, then press
key, then press
Page 73
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