Furuno GP-150-DUAL - Manual (Page 42)

5. SETTING DESTINATION
5-8
uses ship's average speed to calculate
time-to-go.
6) If you selected Man, enter speed.
7) Press the
NU/CU ENT key.
The range, bearing and time-to-go between
two points appear on the display. If data
entered is wrong or insufficient the buzzer
sounds and the message "INCOMPLETE
DATA" appears. If the data contains error,
"*" and all nines appear as the calculation
results.
8) Press the MENU ESC key.