Section 6 Target Tracking and AIS 6-6
6.3 Displaying Symbols
This section describes the symbols that are used for target tracking and AIS.
6.3.1 Displaying/hiding target tracking symbols/AIS
target symbols
In the display setting at the time of shipment from the factory, the display of target tracking symbols and
of the AIS target symbols is enabled. However, choosing [Options] – [Target] from the View menu can
switch between display and hide.
For the details, refer to "16.2.7 Setting up the display of TT/AIS target".
6.3.2 Types and Definitions of Target Tracking
Symbols
Symbol Definition Remarks
Initial acquisition target
This symbol is displayed until the vector is
displayed after target acquisition.
Target acquired in
automatic acquisition zone
The alarm sounds.
The alarm message (New Target) turns
orange and blinks.
The symbol turns red and blinks.
Tracked target This means a tracked target.
Dangerous target
The alarm sounds.
The alarm message (CPA/TCPA) turns red
and blinks.
The symbol is enlarged and displayed in red.
Numeric displayed target
When the numeric data is displayed, the
target symbol is enclosed in a square.
Lost target
The alarm sounds.
The alarm message (Lost) turns orange and
blinks.
The symbol turns red.
Past position
The past positions of an AIS target are
displayed as well as the target tracking
symbol.
Target track
The track of another ship as an AIS target is
displayed as well as the target tracking
symbol.
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