Furuno FAR-28x7 Series - Manual (Page 260)

APPENDIX
AP-18
VHW - Water speed and heading
$--VHW,x.x,T,x.x,M,x.x,N,x.x,K*hh<CR><LF>
| | | | | | | | |
| | | | | | | | +--------- 5
| | | | | | +--+----------- 4
| | | | +--+----------------- 3
| | +---+----------------------- 2
+---+----------------------------- 1
1. Heading, degrees true
2. Heading, degrees magnetic
3. Speed, knots
4. Speed, km/h
5. Checksum
VDR - Set and drift
$--VDR,x.x,T,x.x,M,x.x,N*hh<CR><LF>
| | | | | | |
| | | | | | +--------- 4
| | | | +--+----------- 3
| | +--+----------------- 2
+--+----------------------- 1
1. Direction, degrees true
2. Direction, degrees magnetic
3. Current speed, knots
4. Checksum