Garmin 720 Marine GPS System User Manual


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50 GPSMAP 700 Series Owner’s Manual
Device Conguration
4. Complete an action:
• Select  > .
• Select  > .
• Select .
5. Select .
Using the Speed Filter
The speed lter averages the speed of your boat over a short period of time for smoother speed values.
1. From the Home screen, select  >  > .
2. Complete an action:
• Select  >  to keep the speed lter on continuously, enter the speed lter time duration
and select .
• Select  >  to allow the unit to provide the optimal performance as required by your
situation, such as traveling at a constant speed or frequently changing speeds.
Other Vessels
You can show and congure information about other vessels for the Navigation chart, the Fishing chart,
Perspective 3D, or Mariner’s Eye 3D.
: To congure Automatic Identication System (AIS) information for other vessels, your chartplotter
must be connected to an external AIS device.
Viewing a List of AIS Targets
See “Viewing a List of AIS Targets” (page 15).
Conguring the Appearance of Other Vessels
: The Mariner’s Eye 3D chart is available if you use a BlueChart g2 Vision SD card. The Fishing chart
is available if you use a BlueChart g2 Vision SD card or a BlueChart g2 SD card, or if your built-in map
supports Fishing charts.
1. From the Home screen, select .
2. Select , , , or .
3. Select  > > .
4. Complete an action:
• Select  to view a list of AIS targets (page 12).
• Select  to view a log of the most-recent DSC calls and other DSC contacts you have entered
(page 79).
• Select  to congure how AIS vessels are shown on a chart (page 14).
• Select  to show the tracks of DSC vessels, and select the length of the track that appears
using a trail (page 82).
• Select  to set up a safe-zone collision alarm for AIS vessels (page 14).
Information about Your Boat
Calibrating a Water Speed Device
If you have a speed-sensing transducer, you can calibrate that speed-sensing device.
1. From the Home screen, select  >  > .
2. Follow the on-screen instructions.
 If the boat is not moving fast enough or the speed sensor is not registering a speed, a “Speed too
low” message appears. Select , and safely increase the boat speed. If the message appears again, stop
the boat, and ensure that the speed-sensor wheel is not stuck. If the wheel turns freely, check the cable
connections. If you continue to get the message, contact Garmin Product Support.
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