Garmin GPSMAP 620 - Vessel and Chart Settings; Configuring Other Vessels (AIS;DSC)

36 GPSMAP 620 Owner’s Manual
Marine Mode: Advanced Conguration
Keel Offset—offset the surface reading for the depth of a keel,
making it possible to measure depth from the bottom of the keel
instead of from the transducer location. Enter a positive number to
offset for a keel. Enter a negative number to compensate for a large
vessel that may draw several feet of water.
To adjust the Keel Offset:
1. From the Home screen, touch Congure > My Boat > Keel
Offset.
2. Use the on-screen keyboard to specify the offset.
If you are measuring down to the keel (Intelliducer installed
at the water line), enter a (+) positive number.
If you are measuring up to the water line (Intelliducer
installed on the keel), enter a (-) negative number.
3. Touch Done to accept the number.
Turn Transition Distance—set how far before a turn in a route
that you transition to the next leg.
Conguring Other Vessels
From the Home screen, touch Congure > Other Vessels.
NOTE: To congure AIS or DSC information for other boats, your
unit must be connected to an external AIS or DSC device.
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AIS—turn AIS on or off. AIS alerts you to area trafc by providing
boat IDs, position, course, and speed for boats that are within range
and equipped with a transponder.
DSC—turn DSC on or off.
AIS Alarm (AIS only)
—set an alarm to sound when other AIS-
equipped vessels are within a specied range. This is used for
collision avoidance and can be customized.
Range
—change the measured radius of the Safe Zone ring to a
specied distance from 500 ft. to 2.0 nm (or 150 m to 3 km, or
500 ft. to 2.0 mi.).
Time to (Safe Zone)
—sounds an alarm if AIS determines that
a target will intersect the Safe Zone within the dened time
interval (ranging from 1 to 24 minutes).
NOTE: Additional AIS and DSC conguration options are
available from the Navigation chart options. See page 36.
Conguring Navigation Chart Options
From the Navigation chart, touch Menu.
Waypoint and Tracks
—access shortcuts to waypoint and track
information. For more information on waypoints and tracks,
see page 21.
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