Chapter 5: Using the Radar 5-23
How are targets displayed on screen?
Each target is displayed as a symbol which indicates its status:
What are CPA graphics and what do they show me?
CPA graphics show vectors for your vessel and a selected target. A vector is a line on-
screen showing the predicted courses of your vessel and the selected target if you both
remain on your present course. These vectors vary in length due to boat speed and
vector length set in the MARPA Setup menu.
remain on your present course. These vectors are infinite and extend to the edges of
the screen. These graphics can be shown in either TRUE or RELATIVE modes.
The CPA graphic and associated soft keys are displayed when you select a target with
the cursor. You can change the settings as follows:
• AUTO - when you place the cursor over any part of a MARPA symbol, the CPA
graphic is displayed.
• ON - the CPA graphic will be displayed for as long as the target is being tracked.
• OFF - no CPA graphic is shown.
D7542_1
Dangerous target
Safe target
Target being acquired
Lost target
MARPA targets
D6810_1
1
2
CPA GRAPHIC
OFF ON AUTO
CANCEL
ALL TARGETS
SHOW DETAILS
OFF ON
CANCEL TARGET
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