Furuno DUAL GPS GP-150-DUAL Operator's Manual page 44

5. SETTING DESTINATION
AUTO 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.
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