Chapter 8: Using the Radar (Digital) 211
In relative motion mode, no vector extension of your boat is shown. The CPA
line emerges from your own boat, with the target vector extension being shown as
relative, not true. The text next to the target indicates its course and speed.
Press SHOW DETAILS to display the calculated relative course and speed.
Displaying MARPA data
All MARPA data is held in a list containing:
•MARPA ID
•Bearing
•Range
•True Course
• True Speed
•CPA
•TCPA
Target display
The position of MARPA objects is marked with an icon, which also indicates its
MARPA status.
To view the MARPA list
1. Press the TARGET TRACKING softkey.
2. Press the MARPA LIST softkey.
To cancel MARPA directly
1. Highlight a tracked MARPA object.
2. Press either the CANCEL TARGET or CANCEL ALL TARGETS softkey, as
appropriate.
To cancel MARPA from the MARPA list
1. Open the MARPA list.
2. Select a target and press CANCEL TARGET or CANCEL ALL TARGETS, as required.
D7542_2
Dangerous target
Safe target
Target being acquired
Lost target
81244_4.book Page 211 Thursday, January 31, 2008 1:53 PM
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