Furuno back gp-80 Manuel D’Utilisation

Ship's course and bearing to waypoint may
be displayed in true or magnetic bearing.
Magnetic bearing is true bearing plus (or mi-
nus) earth's magnetic deviation.

The default setting displays magnetic bear-
ings.

1) Press the [MENU ESC] key.

2) Press [9] to display the SYSTEM SET-

TINGS menu.

3) Press [1] to display the PLOTTER SETUP

menu.

4) Press ▲ or ▼ to select Bearing Ref.

5) Press t or s to select True or Mag.

6) Press the [NU/CU ENT] key, ▲ or ▼.

7) Press the [MENU ESC] key.

The location of the magnetic north pole is dif-
ferent from the geographical north pole. This
causes a difference between the true and mag-
netic north direction. This difference is called
magnetic variation, and varies with respect to
the observation point on the earth. Magnetic
variation may be entered automatically or
manually.

1) Press the [MENU ESC] key.

2) Press [9] to display the SYSTEM SET-

TINGS menu.

3) Press [1] to display the PLOTTER SETUP

menu.

4) Press ▲ or ▼ to select Mag Variation.

5) Press t or s to select Auto or Man. For

automatic, current variation appears in pa-
rentheses.

6) For manual entry, enter variation in two

digits, referring to a nautical chart. If the
variation is 10

°

, for example, press [1]  [0].

7) If necessary, press the [

] key to change

coordinate from east to west or vice versa.

8) Press the [NU/CU ENT] key.

9) Press the [MENU ESC] key.