3. TARGET TRACKING (TT)
3-22
When the cursor is removed from the box the original positions of your ship and TTs
are restored. If a maneuver is unsafe, change speed, course and delay until it is safe.
The trial maneuver takes place with the letter "T" displayed at the bottom of the screen.
The time appears at the top-right position on the display. If any TT is predicted to be
on a collision course with own ship (that is, the target ship comes within preset CPA/
TCPA limits), the target plotting symbol flashes. If this happens, change own ship's tri-
al speed, course or delay time to obtain a safe maneuver.
How to stop a trial maneuver
The method to stop a trial maneuver depends on the trial mode as follows:
Dynamic mode: The trial is terminated when 60 minutes is shown in the Trial time in-
dication.
Static mode: The trial is terminated when you terminate the trial maneuver manually.
To terminate the trial maneuver manually, click the Trial ON/OFF indication to show
[Off].
3.15 TT Simulation Mode
You can simulate the risk of collision by using the TT test and the trial maneuver to-
gether.
1. Execute the TT test as follows:
1) Open the menu then select [8 INITIAL SETTING] and [8 TT SIMULATION
MODE].
2) The confirmation message "Attention: Do you wish to start TT SIMULATION
MODE?" appears. Click the [OK] button to start the test.
2. The normal operation is suspended then three simulated targets appear on the
display.
The indication "S" appears at the bottom of the effective display area during the
simulation mode. The simulation may be terminated any time by going to the
STBY mode.
Three simulated targets move as the following table. The simulated target is au-
tomatically generated with the relative movement in the following table based on
own ship's movement at the start of simulation mode.
Note: If own ship moves after the start of simulation mode, the movement of the
simulated target is not matched with the values in the following table.
Range Bearing Speed Course CPA TCPA
Target A 3.0 NM 45.0° 20.0 kn 0.0° 2.0 NM -6.4 min
Target B 2.0 NM 120.0° 5.0 kn 120.0° 0.0 NM -24.0 min
Target C 7.0 NM 270.0° 100.0 kn 120.0° 3.5 NM 3.5 min
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