Furuno 520 - Manual (Page 47)

4. MENU OPERATION
4-9
RADIUS OF ORBIT
See the section 3.4 "TURN Mode".
SPIRAL SPEED
See the section 3.4 "TURN Mode".
FISH MODE
See the section 3.4 "TURN Mode".
WAYPOINT SWITCHING
See the section 3.3.3 "Switching waypoint".
Selecting speed format
You can choose speed format among from SOG, STW and MANUAL.
1. Rotate the course control knob to select "SPD CALC."
2. Press the course control key to show the speed calculation window.
STW
MANUAL
SOG
Speed calculation window
3. Rotate the course control knob to select SOG, STW or MANUAL as appropriate.
When selecting MANUAL, enter the speed manually.
4. Press the course control knob to finish.
The NAVpilot-511/520 controls the boat (for ORBIT, SPIRAL function, etc.) by using the
speed selected here. When MANUAL is selected and there is a large difference between
actual and entered speeds, the boat may not be controlled correctly. We recommend using
of GPS speed.