Collision Assessment By Offset Ebl; How To Assess Risk Of Collision Using The Offset Ebl - Furuno FAR-1416 Operator's Manual

2. Select [CURSOR], then press the left button.
3. Select [EBL/VRM], then press the left button.
4. Select [EBL1] or [EBL2] as appropriate, then press the left button.
5. Select the [REL] or [TRUE] as appropriate, then press the left button.
6. Close the menu.
Note: The EBL and its indication change according to gyrocompass changes as fol-
lows:
Gyro heading
HEAD UP / relative
HEAD UP / true
COURSE UP / relative
COURSE UP / true
NORTH UP / relative
NORTH UP / true
1.33

Collision Assessment by Offset EBL

The origin of the EBL can be placed anywhere with the Trackball to enable measure-
ment of range and bearing between any two targets. This function is also useful for
assessment of the potential risk of collision. It is possible to read CPA (Closest Point
of Approach) by using a VRM as shown in (a) in the illustration below. If the EBL pass-
es through the sweep origin (own ship) as shown in (b) in the illustration below, the
target ship is on a collision course.
320
310
300
290
280
270
260
250
240
230
No. 1
220
EBL
>169.7 ° T<
EBL1
1.33.1

How to assess risk of collision using the offset EBL

There are two methods for assessing risk collision. You can use the control unit or the
[CURSOR] menu.
Using the control unit (RCU-029)
Note: The [EBL OFFSET] function must be assigned to a function key (F1, F2 or F3)
for this method. See section 1.13 for how to assign the function keys.
EBL indication and EBL marker are unchanged.
EBL indication does not change, however the EBL
marker moves accordingly
EBL indication does not change, however the EBL
marker moves accordingly.
EBL indication and EBL marker are unchanged.
EBL indication does not change, however the EBL
marker moves accordingly
EBL indication and EBL marker are unchanged.
000
010
350
020
340
330 030
040
050
A
1
A
130
140
210
150
200
160
190 170
180
>3.85NM<
VRM1
(a)
EBL changes
340
330
320
310
A
300
060
290
070
280
080
270
090
260
100
250
110
240
120
No. 1
230
EBL 220
210
200
>145.1 ° T<
EBL1
1. OPERATIONAL OVERVIEW
000
350 010
020
030
040
050
060
070
1
A
080
090
100
110
120
130
140
150
160
190
170
180
>3.85NM<
VRM1
(b)
1-41