Automatic Identification System - Garmin 400/500 Owner's Manual

Using Charts
To view a split chart/sonar screen:
1. From the Home screen, select Chart/Sonar.
2. Select the type of chart on the split screen.
Sonar
screen
Navigation/Sonar Combination
To access additional settings or options for the chart/sonar screen,
press MENU.

Automatic Identification System

The Automatic Identification System (AIS) enables you to identify
and track other vessels.
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About AIS
AIS alerts you to area traffic. When connected to an external AIS
device, the chartplotter can show some AIS information about other
vessels that are within range, that are equipped with a transponder,
and that are actively transmitting AIS information. The information
reported for each vessel includes the Maritime Mobile Service
Identity (MMSI), the location, the GPS speed, the GPS heading,
Navigation
the time that has elapsed since the last position of the vessel was
chart screen
reported, the nearest approach, and the time to the nearest approach.
Lost AIS
target
Dangerous
AIS target
AIS target
AIS Targeting on the Navigation Chart
GPSMAP 400/500 Series Owner's Manual
Tracking
AIS target
Lost
dangerous
AIS target
Closest point and
time of approach to
dangerous target