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4. AIS OPERATION
4-3
4.2 How to Show, Hide the AIS Display
Targets that are being tracked by an AIS transponder
can also be displayed on the display. Click the AIS sta-
tus indication to select [DISP OFF], [DISP FILT] or
[DISP ALL].
[DISP OFF]: Turn off the AIS display. (Tracking contin-
ues internally.)
[DISP FILT]: Filter AIS targets according to the settings
of the AIS target filter. See section 4.4.
[DISP ALL]: Display all AIS targets.
4.3 AIS Symbols
Symbol Default color Name Description
Green AIS tracked target past
position point
Mark past position.
Green Sleeping AIS target Denote sleeping AIS symbol. (Lines are
thinner than Active AIS symbol.)
Green Activated AIS target Denote active AIS target, with vector for
course and speed. (Lines are thicker than
sleeping AIS symbol.) Color can be
changed with the menu.
Red (fixed) Activated target in AZ
(without acknowledg-
ment)
Unacknowledged active AIS target in ac-
quisition zone, with vector for course and
speed. (Lines are thicker than sleeping AIS
symbol.)
Green Activated target in AZ
(with acknowledgment)
Acknowledged active AIS target in acquisi-
tion zone, with vector for course and
speed. (Lines are thicker than sleeping AIS
symbol.) Color can be changed with the
menu.
Green Activated target, true
scale symbol
Active AIS target with symbol shown in true
scale. Association AIS symbol or activate
AIS symbol is displayed within the ship’s
symbol when activated. This symbol disap-
pears when the size of the true scale sym-
bol is smaller than 3 mm on the display.
Blue AIS SART test Denote AIS SART (search and rescue ra-
dar transponder) test.
Red (fixed) AIS SART active Denote AIS SART (search and rescue ra-
dar transponder) active.
Red (fixed) Dangerous AIS target Target’s CPA and TCPA are within the
CPA and TCPA settings. Vector shown.
The symbol flashes until acknowledgment.
Green Association AIS target AIS and TT target declared as "association
target". AIS symbol and AIS data are used.
Red (fixed) Association AIS danger-
ous target
AIS and TT target declared as "association
target". AIS symbol and AIS data are used.
Target's CPA and TCPA are within limits
set.