Furuno FI-505 Manual De Usuario

1. FI-501 WIND ANGLE, FI-502 CLOSE HAULED WIND ANGLE

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, press the APP/
TRUE 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 requires boat 
speed input. If there is no speed input three dashes appear. 

kt

m/s

kt

m/s

0

0

0-0.2

7

28-33

14.4-17.4

1

1-3

0.5-2.0

8

34-40

17.5-21.0

2

4-6

2.1-3.5

9

41-47

21.1-24.6

3

7-10

3.6-5.6

10

48-55

24.7-28.8

4

11-16

5.7-8.6

11

56-63

28.9-32.6

5

17-21

8.7-11.2

12

64

32.7-32.9

6

22-27

11.3-14.3

Apparent and true
wind speeds

Apparent and true
wind angles