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Automatic identification system, About ais – Garmin GPSMAP 545s User Manual

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GPSMAP 400/500 Series 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.

Navigation

chart 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.

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,

the time that has elapsed since the last position of the vessel was

reported, the nearest approach, and the time to the nearest approach.

AIS Targeting on the Navigation Chart

Lost

dangerous

AIS target

Lost AIS

target

AIS target

Closest point and

time of approach to

dangerous target

Dangerous

AIS target

Tracking

AIS target