Furuno FI-503, Operator'S Manual

Page: 13 / 42

1. OPERATION
6
1.5 Selecting Apparent or True Wind Angle,
Wind Speed
You can show wind angle and wind speed in apparent or true wind. The
apparent wind is the actual flow of air acting upon a sail, or the wind as
it appears to the sailor. True wind is the wind seen by a stationary ob-
server in velocity and direction.
With a wind angle or wind speed indication displayed, long-push the SE-
LECT/CLEAR key to change the wind angle or wind speed to apparent
and true alternately. A beep sounds after the change is completed. (Wind
angle and wind speed displays are mutually changed.) True wind re-
quires boat speed input. If there is no speed input, three dashes appear.
HI 5.0
kt
HI
WSPD
9.6
kt
WSPD
SELECT
CLEAR
TRU
APP
HI 135
HI
ANG
157
ANG
SELECT
CLEAR
TRU
APP
Apparent and true
wind speeds Apparent and true
wind angles