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ARPA
Operation
ARPA is an anti-collision aid that tracks the movement of other ships to help prevent collision. ARPA not only tracks other ships
but also provides their navigation data. Targets can be acquired manually, automatically, or both automatically and manually.
How to show, hide ARPA symbols
20
30
40
60
80
How to manually acquire a target
Target
Target
Tap the target to acquire.
How to automatically acquire a target
Set a guard zone, then tap the
guard zone.
ARPA symbols
At acquisition
How to display target data
ARPA symbol
ARPA symbol
Tap an ARPA target to show its data.
Open the Layers menu,
tap the [Overlays] tab.
Tap
Tap
Tap
4
Tap
ON
30 seconds
after acquisition
4
8
8
ON
A R
A
ARPA symbols ON
OFF
ARP
ARPA symbols OFF
1
1
The dashed lines change to solid lines,
indicating the guard zone is active.
Lost target
1
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