Reference Manual Part 2

159 Chapter 12: Automatic Identification System
12.5 Using AIS
AIS is a selectable layer of the chart or radar application.
To switch AIS layer on
1. With either a chart or radar window active, press the PRESEN-
TATION softkey.
2. If you are in a radar window, toggle AIS on or off using the AIS
LAYER softkey.
If you are in a chart window, press the CHART LAYERS
softkey to open the toolbar containing SYMBOLOGY, then
select AIS.
AIS status icons
Status icons are displayed in the data bar.
12.6 The AIS data display
Suitably AIS-enabled vessels (or AIS ‘targets’) appear as triangular
symbols. Up to 100 targets can be displayed.
Vectors can be displayed for each target. These vectors indicate
the direction of travel and rate of turn of the vessel and the distance
it will travel over a specified period of time (COG/SOG vector). Tar-
gets displayed with their vectors are referred to as ‘active targets’
and are scaled according to the size of the vessel.
You can choose to display all targets or just the dangerous ones
(see
page 158).
oo
No recent AIS messages.
There are recent AIS messages.
AIS unit on with active alarms.
AIS unit switched on and operating but dangerous and
lost alarm disabled.
D9541-1
D9056_1
097°T
11.6kt
1.237nm
00h04m33s
Safety
critical data
Heading
Large
vessel
Direction
of turn
Small
vessel
Sleeping
target
Dangerous
target (flashes)
Safe zone (defined by
distance or time)
COG/SOG
vector