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

Summary
NMEA 0183 standard Time and Date

Syntax
$GPZDA,<1>,<2>,<3>,<4>,<5>,<6>*hh<CR><LF>

Fields
<1>    UTC of position, in the form hhmmss
<2>    Day, 01 to 31
<3>    Month, 01 to 12
<4>    Year, four digits (e.g. 2006)
<5>    Local zone hours, always set to 00 in PB100
<6>    Local zone minutes, always set to 00 in PB100

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,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

Summary
NMEA 0183 Relative (Apparent) Wind Speed and Angle.  Wind angle in relation to the vessel’s heading
and wind speed measured relative to the moving vessel.

Syntax
$WIVWR,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>*hh<CR><LF>

Fields
<1>    Measured angle relative to the vessel, left/right of vessel heading, to the nearest 0.1 degree
<2>    L = left, or R = right
<3>    Measured 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

Summary
NMEA 0183 standard Course Over Ground and Ground Speed.

Syntax
$GPVTG,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>*hh<CR><LF>

Fields
<1>    Course Over Ground, degrees True, to the nearest 0.1 degree
<2>    T = True
<3>    Course Over Ground, degrees Magnetic, to the nearest 0.1 degree
<4>    M = Magnetic
<5>    Speed Over Ground, knots, to the nearest 0.1 knot
<6>    N = Knots
<7>    Speed Over Ground, km/hr, to the nearest 0.1 km/hr
<8>    K = km/hr
<9>    Mode indicator:
           A = Autonomous mode
           D = Differential mode
           E = Estimated (dead reckoning) mode
           M = Manual input mode
           S = Simulator mode
           N = Data not valid

Summary
NMEA 0183 standard Recommended Minimum Specific GNSS Data.

Syntax
$GPRMC,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>,<10>,<11>,<12>*hh<CR><LF>

Fields
<1>    UTC of position, in the form hhmmss
<2>    Status: A = Data Valid; V = Navigation Receiver Warning
<3>    Latitude, to the nearest .0001 minute
<4>    N if field <2> is North Latitude S if field <2> is South Latitude
<5>    Longitude, to the nearest .0001 minute
<6>    E if field <4> is East Longitude W if field <4> is West Longitude
<7>    Speed Over Ground, knots, to the nearest 0.1 knot
<8>    Course Over Ground, degrees True, to the nearest 0.1 degree
<9>    Date: ddmmyy
<10>   Magnetic Variation, degrees E/W, to the nearest 0.1 degree
<11>   E if field <10> is degrees East W if field <10> is degrees West
<12>   Mode indicator:
            A = Autonomous mode
            D = Differential mode
            E = Estimated (dead reckoning) mode
            M = Manual input mode
            S = Simulator mode
            N = Data not valid

Summary
NMEA 0183 standard Wind Speed and Angle, in relation to the vessel’s bow/centerline.

Syntax
$WIMWV,<1>,<2>,<3>,<4>,<5>*hh<CR><LF>

Fields
<1>    Wind angle, 0.0 to 359.9 degrees, in relation to the vessel’s bow/centerline, to the nearest 0.1
           degree. If the data for this field is not valid, the field will be blank.
<2>    Reference:
           R = Relative (apparent wind, as felt when standing on the moving ship)
           T = Theoretical (calculated actual wind, as though the vessel were stationary)
<3>    Wind speed, to the nearest tenth of a unit.  If the data for this field is not valid, the field will be
           blank.
<4>    Wind speed units: 
           K = km/hr M = m/s
           N = knots
           S = statute miles/hr
<5>    Status:
           A = data valid; V = data invalid

Summary
NMEA 0183 standard Wind Direction and Speed, with respect to north.

Syntax
$WIMWD,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>*hh<CR><LF>

Fields
<1>    Wind direction, 0.0 to 359.9 degrees True, to the nearest 0.1 degree
<2>    T = True
<3>    Wind direction, 0.0 to 359.9 degrees Magnetic, to the nearest 0.1 degree
<4>    M = Magnetic
<5>    Wind speed, knots, to the nearest 0.1 knot.
<6>    N = Knots
<7>    Wind speed, meters/second, to the nearest 0.1 m/s.
<8>    M = Meters/second

Summary
NMEA 0183 standard Meteorological Composite.

Syntax
$WIMDA,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>,<10>,<11>,<12>,<13>,<14>,<15>,<16>,
              <17>,<18>,<19>,<20>*hh<CR><LF>

Fields
<1>    Barometric pressure, inches of mercury, to the nearest 0.01 inch
<2>    I = inches of mercury
<3>    Barometric pressure, bars, to the nearest .001 bar
<4>    B = bars
<5>    Air temperature, degrees C, to the nearest 0.1 degree C
<6>    C = degrees C
<7>    Water temperature, degrees C (this field left blank by WeatherStation)
<8>    C = degrees C (this field left blank by WeatherStation)
<9>    Relative humidity, percent, to the nearest 0.1 percent
<10>   Absolute humidity, percent (this field left blank by WeatherStation)
<11>   Dew point, degrees C, to the nearest 0.1 degree C
<12>   C = degrees C
<13>   Wind direction, degrees True, to the nearest 0.1 degree
<14>   T = true
<15>   Wind direction, degrees Magnetic, to the nearest 0.1 degree
<16>   M = magnetic
<17>   Wind speed, knots, to the nearest 0.1 knot
<18>   N = knots
<19>   Wind speed, meters per second, to the nearest 0.1 m/s
<20>   M = meters per second

Summary
NMEA 0183 standard Heading, Deviation and Variation.

Syntax
$--HDG,<1>,<2>,<3>,<4>,<5>*hh<CR><LF>

Fields
<1>    Magnetic sensor heading, degrees, to the nearest 0.1 degree.
<2>    Magnetic deviation, degrees east or west, to the nearest 0.1 degree.
<3>    E if field <2> is degrees East W if field <2> is degrees West
<4>    Magnetic variation, degrees east or west, to the nearest 0.1 degree.
<5>    E if field <4> is degrees East W if field <4> is degrees West