6. RADAR
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How to put an ARPA target at the center of the plotter display
Tap a target on the list. Tap [Find on Chart] to put the ARPA target at the center of the
plotter display.
6.27.8 How to clear lost targets
Tracking of a target cannot be continued when the echo from that target becomes lost.
A lost target can be tracked after it is reacquired. Lost targets can be erased individu-
ally or collectively.
Individual target
Tap the target to display the pop-up menu, then tap [Clear] to remove the target from
the screen.
Clear all targets
Open the slide-out menu, tap [ARPA], then tap [Clear Lost] to delete all lost targets
from the screen.
6.27.9 CPA/TCPA alarm
This alarm helps you keep your ship away from collision by warning of targets on a
collision course. The ARPA continuously monitors the predicted range at the Closest
Point of Approach (CPA) and predicted time to CPA (TCPA) of each tracked target.
When both the predicted CPA and TCPA are less than their set values, the target sym-
bol turns red, the alarm sounds and the flashing message "CPA/TCPA Alarm" appears
at the top of the screen.
CPA/TCPA alarm ranges must be set correctly according to the size, tonnage, speed,
turning performance and other characteristics of your ship.
How to set the CPA/TCPA alarm
1. Open the home screen, then tap [Settings] - [Targets].
2. Turn on [CPA/TCPA Alarm].
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