Specifications

AIRMAR
®
PB100 WeatherStation Technical Manual revision 1.007
20
NMEA 0183 TRANSMITTED SENTENCE
$WIVWT
Summary
NMEA 0183 True wind angle in relation to the vessel’s heading, and true wind
speed referenced to the water. True wind is the vector sum of the Relative
(apparent) wind vector and the vessel’s velocity vector relative to the water along
the heading line of the vessel. It represents the wind at the vessel if it were
stationary relative to the water and heading in the same direction.
Syntax
$WIVWT,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>*hh<CR><LF>
Fields
<1>
Calculated wind angle relative to the vessel, 0 to 180°, left/right of
vessel heading, to the nearest 0.1 degree
<2>
L = left, or R = right
<3>
Calculated wind speed, knots, to the nearest 0.1 knot
<4>
N = knots
<5>
Wind speed, meters per second, to the nearest 0.1 m/s
<6>
M = meters per second
<7>
Wind speed, km/h, to the nearest km/h
<8>
K = km/h
Default State
Disabled, but automatically enabled if water speed is provided via the NMEA
0183 input. Transmitted once per second when enabled.
Notes
This sentence can be manually enabled or disabled via the $PAMTC,EN,VWT
command.