Section 6    Target Tracking and AIS  6-20 
 
6.4.4  Showing the CPA ring (RADAR only) 
The CPA ring is rendered as a red circle with the own ship centered and the CPA limit set distance used 
as the radius. 
1  Click on the [Menu] button on the left toolbar. 
The menu is displayed. 
2  Click on [View] - [Option] - [Target]. 
The [Target] dialog is displayed. 
3  Select [CPA Ring (Only Relative mode)]. 
 
The CPA ring is shown. 
 
Note: 
When True is specified for the vector mode, [CPA Ring (Only Relative mode)] cannot be selected. 
 
[CPA Ring (Only Relative mode)]