 
 float	nmea_speed_water = -1.0;	// Speed through water in knots, < 0 means invalid/no reading (do not report)
 float	nmea_depth_water = -1.0;	// Depth of water below transducer, < 0 means invalid/not available
-float	nmea_wind_speed = -1.0;		// Speed of true wind in knots, < 0 invalid/not available
-float	nmea_wind_direction = -1.0;	// Angle of true wind in degrees, < 0 invalid/not available
+float	nmea_wind_speed = -1.0;		// Speed of true wind in knots, < 0 invalid/not available (apparent)
+float	nmea_wind_direction = -1.0;	// Angle of true wind in degrees, < 0 invalid/not available (apparent)
+float	nmea_wind_speed_abs = -1.0; 	// Speed of true wind in knots, < 0 invalid/not available (absolute)
+float	nmea_wind_direction_abs = -1.0;	// Angle of true wind in degrees, < 0 invalid/not available (absolute)
 float 	nmea_water_temperature = -1.0;	// Temperature of water in _FARENHEIT_, < 0 invalid/not available
 float 	nmea_heading_true = -1.0;	// Temperature of water in _FARENHEIT_, < 0 invalid/not available
 float 	nmea_heading_magnetic = -1.0;	// Temperature of water in _FARENHEIT_, < 0 invalid/not available

  possibly_append_data(nmea_depth_water, -0.5, F(",D:"));
  possibly_append_data(nmea_wind_speed, -0.5, F(",J:"));
  possibly_append_data(nmea_wind_direction, -0.5, F(",K:"));
  possibly_append_data(nmea_water_temperature, -0.5, F(",Y:"));
  possibly_append_data(nmea_heading_true, -0.5, F(",G:"));
  possibly_append_data(nmea_heading_magnetic, -0.5, F(",M:"));

  }

  //
  //	Absolute Wind Speed and direction 
  //
  
  else if(  popout_nmea_value(F("MWD"), commas[4], commas[5], nmea_wind_speed_abs))
  {
    #ifdef NMEA_DEBUG_ON
    debug_info(F("NMEA abw speed:"), nmea_wind_speed_abs);
    #endif
    nmea_wind_speed_abs_timestamp = millis();
    if(	popout_nmea_value(F("MWD"), commas[0], commas[1], nmea_wind_direction_abs))
    {
      #ifdef NMEA_DEBUG_ON
      debug_info(F("NMEA abw direction:"), nmea_wind_direction_abs);
      #endif
      nmea_wind_direction_abs_timestamp = millis();
    }
  }

  //
  //	Heading Magnetic and (possibly) True via HDG
  //

