VBW - Dual Ground/Water Speed

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 $--VBW,x.x,x.x,A,x.x,x.x,A*hh<CR><LF>

 Field Number: 
  1) Longitudinal water speed, "-" means astern
  2) Transverse water speed, "-" means port
  3) Status, A = Data Valid
  4) Longitudinal ground speed, "-" means astern
  5) Transverse ground speed, "-" means port
  6) Status, A = Data Valid
  7) Checksum