Specifications

AIRMAR
®
PB100 WeatherStation Technical Manual revision 1.007
32
_NMEA 0183 RECEIVED SENTENCE_
$--VHW
Summary
NMEA 0183 standard Water Speed and Heading.
Syntax
$--VHW,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>*hh<CR><LF>
Fields
<1>
Compass Heading, degrees True
<2>
T = true
<3>
Compass Heading, degrees Magnetic
<4>
M = magnetic
<5>
Water speed, knots
<6>
N = knots
<7>
Water speed, km/h
<8>
K = km/h
Notes
This sentence is used to obtain water speed from an Airmar® Smart™ speed
sensor. The water speed data is used to calculate true wind relative to the water.
The compass heading fields in this sentence are ignored by the WeatherStation.