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3. TARGET TRACKING (TT)
3-7
3.7 TT Symbols and TT Symbol Attributes
3.7.1 TT symbols
The symbols used in this equipment comply with IEC 62388.
X
T
S
Symbol
Default color Name
Description
Green
Green
Green
Red
Green
Green
Green
Red
Red
Red
Red
White
White
Past position marker
Target under acquisition
Target under automatic
acquisition
Acquired target
ACQed target in ACQ zone
(before acknowledgement)
Dangerous target
Reference target
Association target
Association dangerous
target
Lost target
Target selected
Trial maneuver
TT test
Past position point
Plotting symbol selected for a target acquired
manually is shown in broken lines.
Thick, broken circle around an echo to indicate
the target under acquisition and initial stage of
tracking, before steady-state tracking.
Solid circle with vector indicating steady state
tracking (within three minutes after acquisition)
Thick, solid circle with vector indicating steady
state tracking (within three minutes after
acquisition)
Dangerous TT (thick, solid circle)
Used to calculate own ship’s over-the-ground
speed (echo-referenced speed) for ground
stabilization.
TT selected to show its data.
Displayed (flashing) during trial maneuver test.
Displayed (flashing) during TT test.
R01