Furuno FEA-2807 - Navigation Marks; How to Shift the EBL

12.Navigation Tools
12-2
12.2 Navigation Marks
Navigation marks consist of two sets of Reference Point, EBL, VRM, and four parallel index lines. Two sets of
these marks are provided on the Nav. Marks dialog box, so that you can arrange each set according to a particular
navigation operation. To display the Nav. Marks dialog box, spin the scrollwheel to display Show Value/Info/Nav
Marks in the mouse functions area then push the right mouse button.
Note: If you are using the Control Unit RCU-018, the EBLs and VRMs can also be turned on or off from the
keyboard.
Set 1 page
Display
REF point: Turn on/off the reference point on the electronic chart.
VRM: Turn on/off the VRM (Variable Range Marker), which is displayed around the
reference point.
EBL: Turn on/off EBL (Electronic Bearing Line), which extends from the reference point.
Rings: Turn on/off the range rings, which circumscribe the reference point. The ring
interval depends on scale of displayed chart.
Info: Turn on/off numerical information for VRM, EBL and reference point.
REF point
Centered: Center of VRM and EBL matched to ship position.
Set 2 page
Provides a second set of the items contained in Set 1.
12.2.1 How to shift the EBL
With control unit RCU-018
There are two EBLs, No. 1 and No. 2. Each EBL is a straight dashed line extending from your ship's position up to
the edge of the screen. The long dashed line is the No. 1 EBL and the short dashed one is the No. 2 EBL. Press the
EBL ON key to display either of the EBLs. Successive presses of the EBL ON key toggle the active EBL between
No. 1 and No. 2. To adjust an EBL, use the EBL rotary encoder, above the EBL OFF and EBL ON keys. The EBLs
can be turned on or off from the Nav Marks dialog box by checking or unchecking EBL on the Set 1 or Set 2 page.
Each EBL carries a range marker, or a short line crossing the EBL at right angles and its distance from the EBL
origin is indicated at the VRM readout whether or not the corresponding VRM is displayed. The range marker
changes its position along the EBL with the rotation of the VRM rotary encoder. The corresponding VRM must be
turned off to use a range marker.
With control unit RCU-015
You have two methods available to adjust the EBL. You can directly enter a numeric value for the EBL on the Nav.
Marks dialog box, or you can put the cursor on an EBL, then press and hold down the left mouse button while
rotating the trackball. If you locate the cursor over the intersection of a VRM and an EBL, you can adjust them
together, using the left mouse button and trackball. (Note that this can also be done from the keyboard-equipped
Control Unit RCU-018.) The EBLs can be turned on or off from the Nav Marks dialog box by checking or
unchecking "EBL" on the Set 1 or Set 2 page.