Raymarine e7 User Reference page 168

5. Select Time to Safe Zone.
i. Select a time period.
A target is considered dangerous if it will enter your safe
zone within this time period.
6. Select Safe Zone Ring.
Selecting safe zone ring will switch between showing and hiding
the safe zone ring in the radar application.
Using MARPA
Acquiring a MARPA target to track
From the radar application:
1. Select the target to be acquired.
The radar context menu is displayed.
2. Select Acquire Target.
The "target being acquired" symbol is displayed. If the target is
present for several scans, the radar locks-on to the target, and the
symbol changes to "safe target" status.
Cancelling a MARPA target using the MARPA context menu
From the radar application:
1. Select the relevant target.
The MARPA context menu is displayed.
2. Select Cancel Target or Cancel All Targets.
Cancelling a MARPA target using the menu
1. Select Menu.
2. Select Track Targets.
3. Select View MARPA Lists.
Note: If AIS data is available the menu will be View MARPA &
AIS Lists.
4. Select View MARPA List.
5. Select the relevant MARPA target from the list.
168
6. Select Cancel Target or Cancel All Targets.
Vessel vectors (CPA graphics) overview
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 vessel speed and vector
length set in the MARPA Set-up menu.
1
143°T
28.0kt
Item
1
2
True motion
With the display set in true motion mode, the vectors of your vessel
and the target are shown extended to their intersection point. The
CPA is shown as a line that is placed on your vessel's vector at
the point of the CPA. The length and direction of the line indicates
2
0.556nm
00h30m09s
Description
Target vector
CPA graphic
e7 / e7D — User reference
D9008-2