Section 6 Target Tracking and AIS 6-28
The symbol display is changed to " ". The target data will remain on the radar display until
the target is lost and its vector disappears, or until another target is designated.
If a target with the mark " " is designated, only its true bearing and range appear until its
vector appears.
Cancellation of numeric data display
1 Set the cursor mode to the AUTO mode.
2 Place the cursor on the tracked target to cancel numeric value display and then click
on.
The numeric value disappears.
Details on tracked target information
Item Explanation
TT ID ID No. of tracked target being displayed
BRG True bearing
Range Distance
CTW (Course Through the
Water stabilization mode)/
COG (Course Over the
Ground stabilization mode)
Course
STW (Speed Through the
Water stabilization mode) /
SOG (Speed Over the
Ground stabilization mode)
Speed
CPA Closest approach distance
TCPA Time up to closest approach distance
BCR Bow crossing distance
BCT Bow crossing time
6.5.4 Erasing unwanted tracked targets
If the vectors and symbols of the unwanted tracked targets remain displayed, the radar screen may
become difficult to view. In such a case, unwanted tracked targets can be erased from the radar screen
using the following method.
To erase one target
1 Place the cursor on the tracked target to be cancelled and then right-click.
The context menu is displayed.
2 Click on the [Cancel TT] on the context menu.
The vector symbol of the tracked target disappears and only the radar image remains.
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