True Wind Angle Table - NKE Multigraphic User Manual & Installation Sheet

2.14.2.1

True wind angle table

The true wind angle table allows correction of the true wind angle value without
researching the causes of angle's errors. It corrects all repeatable errors (twist, flow
over-speed downwind, sensor).
The true wind data is calibrated by logging the true wind direction differences from
one tack to another repeatedly. It is recommended that these calibration sessions are
run from 5 to 50 knots in winds that are stable in direction.
Heading 210°
TWD port tack > TWD starboard tack:
Add half of the difference between the two True Wind Directions.
+
Select the value to be corrected.
The column on the left indicates the true wind speed in knots, the "V1" column is the
correction to apply in degrees and the "A1" column indicates on which angle the
correction will apply. The same pattern applies for "V2" and "A2" for sidewind and
"V3" "A3" for downwind.
Starboard tack Port tack
TWD 250° TWD 260°
10°
45°
45°
+
Modify the value.
71 50_Afficheur_Multigraphic_um_UK_27
Heading 300°
+
+