Garmin GPSMAP 620, Owner'S Manual

Page: 42 / 72

6 GPSMAP 620 Owner’s Manual
Marine Mode: Advanced Configuration
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 Configure > 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.
Configuring Other Vessels
From the Home screen, touch
Configure
>
other Vessels
.
Note:
To configure 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 traffic 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 specified range. This is used for
collision avoidance and can be customized.
range —change the measured radius of the Safe Zone ring to a
specified 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 defined time
interval (ranging from 1 to 24 minutes).
Note: Additional AIS and DSC configuration options are
available from the Navigation chart options. See page 36 .
Configuring 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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