Inputs:
GWD, GWS, HDG, SET, DRIFT
.
Wind dirs are
FROM
, boat/current dirs are
TO
.
BSP, TWA
comes from the loaded polar, depending on mode.
Mode
free
vUp
vDn
Tack
port
stbd
HDG
−
+
GWD
−
+
GWS
−
+
SET
−
+
DRIFT
−
+
Set baseline
Reset
AWA/TWA are signed in boat frame:
•
+
stbd,
-
port
• 0° = wind from straight ahead
Key
Baseline
Value
Delta
COG
SOG
BSP
AWA
AWS
TWA
TWS
TWD
SET/DRIFT
GWD/GWS
Polar view:
• thin curves = discrete
TWS
rows
• thick curve = interpolated at current
TWS
• dot = current
(abs(TWA), BSP)
VMG markers:
•
▲
upwind VMG point (
twaUp/bspUp
)
•
▼
downwind VMG point (
twaDn/bspDn
)
Questions or errors, text me. Cheers, Luca.