Garmin 451s User Manual

Page of 72
GPSMAP 400/500 Series Owner’s Manual 
5
Digital Selective Calling
Man-Overboard Distress Calls Initiated 
from a VHF Radio
When your Garmin chartplotter is connected to a Garmin NMEA 
2000-compatible radio and you initiate a man-overboard DSC 
distress call from your radio, your Garmin chartplotter displays the 
man-overboard screen and prompts you to navigate to the man-
overboard point. If you have a Garmin autopilot system connected 
to the network, your chartplotter prompts you to start a Williamson 
turn to the man-overboard point.
If you cancel the man-overboard distress call on the radio, the man 
overboard screen no longer appears.
Man-Overboard Distress Calls Initiated 
from the Chartplotter
When your Garmin chartplotter is connected to a Garmin NMEA 
2000-compatible radio and you activate navigation to a man-
overboard location, the radio displays the Distress Call page to 
initiate a man-overboard distress call. On the radio, press and hold 
the DISTRESS key for at least three seconds to send the distress 
call.
For information on placing distress calls from your Garmin radio, 
see your Garmin VHF Radio Owner’s Manual. For information on 
Position Tracking
When you connect your Garmin chartplotter to a VHF radio using 
NMEA 0183, you can track vessels that send position reports. This 
feature is also available with NMEA 2000, provided that the vessel 
sends the correct PGN data (PGN 129808; DSC Call Information).
Every position report call received is logged in the DSC list 
(
).
To view a list of position reports:
1.  From the Home screen, select 
Information
 > 
Other Vessels
 > 
DSC List
.
2.  Select from the following options:
Select 
Call with Radio
 to set up an individual routine call 
with the radio to call the vessel that sent the position report. 
This option is only available if you are using a Garmin NMEA 
2000-compatible VHF radio.
Select 
Edit
 to edit the vessel name and the vessel symbol, 
and add a comment. If your radio is tracking the position 
of the vessel, select 
Trail
 to show or hide the trail line for 
the vessel, and select 
Trail Line
 to change the line color. 
Select
 Clear Report
 to delete the call report. Select 
Create 
Waypoint 
to set a waypoint at the position sent with the 
distress call.
Select 
Clear Report 
to delete the call report.