4. AIS OPERATION
4-2
4.2 Showing, Hiding the AIS Display
Left-click the AIS DISP box at the right side of the screen to show or hide the AIS
display and set display criteria.
DISP ALL: All AIS targets received from the AIS transponder are displayed with
symbols.
DISP FILT: AIS targets are displayed according to the criteria set with AIS DISP
FILTER on the AIS/TT menu. See section 4.3 for details.
DISP OFF: All AIS symbols disappear, but tracking continues internally.
AIS
OFF
DISP
AIS DISP box
When the AIS is turned on, AIS targets are marked with appropriate AIS symbol
as below.
Activated
target
ROT higher
than preset
ROT
Dangerous
target
Lost target
All AIS symbols shown with thick line.
Color is selectable from menu.
Displayed for turning ship.
Displayed when CPA/TCPA is within
CPA/TCPA LIMIT. Red in color. Flashing
until acknowledged..
“X” overlaid on a lost target. Red in
color. Erased after acknowledged.
Target selected
for data display
A
Broken square is overlaid on target selected to display its data.
A, B or C shown to indicate data box location (at the right side of
the screen).
Sleeping target
Indicates the presence of a target
equipped with AI. Green in color.
No CPA/TCPA
target
AIS symbols are shown in a broken lines in the following cases:
- No water or ground tracking speed of your ship, or there is no
speed data. All AIS symbols are shown in broken lines and the
message "No CPA/TCPA for AIS" appears (in yellow-orange) in
the Alert Box.
- No speed data from AIS target. The symbol of the corresponding
AIS target is shown in broken lines. A target with neither
a reported heading nor COG is oriented toward the top of the
operational display area.
SYMBOL STATUS REMARKS
Note 1: The equipment continues to process AIS targets when the AIS feature is
switched off. When the AIS is again turned on, symbols are immediately
displayed.
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