Collision Assessment By The Offset Ebl - Furuno FR-7041R-MARK-2 Operator's Manual

1.19

Collision Assessment by the Offset EBL

The origin of the EBL can be placed anywhere with the trackball to measure
range and bearing between any two targets, as well as to assess the risk of
collision.
1. Use the trackball to place the cursor on the center of the target which appears
to be on a collision course with own ship.
2. Press the [EBL1] key to turn on EBL1.
3. Press the [EBL OFFSET] key. EBL1's origin shifts to cursor location.
4. After several minutes, press the [EBL 1] key again.
5. Operate the trackball to pass EBL1's origin through the center of the display.
If the target tracks along EBL1 towards the center of the display (your vessel's
position), it may be on a collision course with own vessel.
Canceling the offset EBL
Press the [EBL OFFSET] key again.
EBL1 origin
(initial position
of target)
Target moved
here.
EBL1
bearing
Figure 1-17 Assessing risk of collision by using the offset EBL
6.0 KM
2.0
+
EBL
135.0°R
1. OPERATION
Offset EBL
(EBL1)
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