Furuno 1942 MARK-2 Offcentering the Picture, Measuring range and bearing between two targets

6.0 NM
2.0		EBL1
EBL1 origin		B
(initial position	VRM1
		VRM1
of target)
		A
Target moved	Offset EBL
here.
	(EBL1)

EBL1	EBL	VRM
	70.0° R	6.0 NM	VRM1
bearing			range

Figure 2-9 Predicting collision course by

using the offset EBL

Measuring range and bearing between two targets

The procedure which follows shows how to measure the range and bearing between tar- get “A” and target “B” in Figure 2-10.

1.Operate the omnipad to place EBL1’s ori- gin (cursor) on the center of target “A.”

2.Press the [EBL/VRM SELECT] key to choose the EBL1 readout and then press the [EBL/VRM CONTROL] key.

3.Press the [MENU] key, select EBL OFF- SET from the menu, and then press the [ACQ/ENTER] key. EBL1’s origin shifts to cursor location.

4.Press the [EBL/VRM CONTROL] key.

5.Operate the omnipad to bisect target “B” with EBL1. Check the EBL1 readout to find the bearing between target “A” and target “B.”

6.Press the [EBL/VRM SELECT] key to choose the VRM1 readout. Operate the omnipad to place the outside edge of VRM1 on the inside edge of target “B.” Check the VRM1 readout to find the range between target “A” and target “B.”

7.To cancel the offset EBL, select EBL OFF- SET from the menu, and then press the [ACQ/ENTER] key.

EBL1		VRM
	70.0° R	4.5 NM	VRM1
bearing			range

Figure 2-10 Measuring the range and bearing between two targets by using the offset EBL

2.14 Offcentering the Picture

Your vessel’s position can be offcentered to 75% of the range in use to view the situation around your vessel without changing the range or size of targets.

1.Press the omnipad to set the cursor where desired.

2.Press the [F1 (A/C SEA)] control if its func- tion is set for SHIFT (default setting), or select SHIFT from the menu. OFFCENTER appears at the top right corner of the display when the picture is offcentered.

Cursor Cursor

1Pleace cursor 2 Press [F1] to offcenter

where desired. display.

Figure 2-11 Offcentering the picture

Cancelling offcentered picture

Press the [F1 (A/C SEA)] control (if function is SHIFT).

2-7