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.


<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

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