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以 Furuno DS-50 Speed Log Data 為例
$VDVLW,0005293.53,N,0005293.53,N*5F
$VDVLW,xxxxx.xx,N,yyyyy.yy,N*hh
| Item | Definition | Units |
| xxxxx.xx | Total cumulative distance of vessel travel | knots |
| N | Units | n/a |
| yyyyy.yy | Distance recorded since reset of DS-50 unit | knots |
| N | Units | n/a |
| *hh | Checksum | n/a |
$VDVBW,011.04,000.09,A,011.04,000.09,V*46
$VDVBW,xxx.xx,yyy.yy,A,zzz.zz,ttt.tt,V*hh
| Item | Definition | Units |
| xxx.xx | Longitudinal water speed | knots |
| yyy.yy | Transverse water speed | knots |
| A | Status: water speed,A=data valid, V=data invalid | n/a |
| zzz.zz | Longitudinal ground speed | knots |
| ttt.tt | Transverse ground speed | knots |
| V | Status: ground speed, A=data valid, V=data invalid | n/a |
| *hh | Checksum | n/a |
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