5.2 TT OPERATION
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5.2.3 Tracking Target Data Display [TGT DATA]
Type of Data Display
Target Data
Target identification (TT ID) ID number of the target
True bearing: BEARING
0.1q unit
Range: RANGE 0.01 NM unit
True course: COURSE
0.1q unit
True speed: SPEED 0.1 knot unit
Closest point of approach (CPA) 0.01 NM unit
Time to CPA (TCPA) 0.1 min unit
Bow crossing range (BCR) 0.01 NM unit
Bow crossing time (BCT) 0.1 min unit
The target for which its numeric data is displayed is marked with a symbol “
” to distinguish from other
targets.
If a target’s data is displayed, but without the symbol “
”, such a target exists outside the currently
displayed radar display.
z When a target or own ship changes its course, or when a new
target is acquired, its vector may not reach a given level of
accuracy until three minutes or more has passed after such
course change or target acquisition.
Even if three minutes or more has passed, the vector may
include an error depending upon the. tracking conditions.
Attention
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