P-19
VTG - Course over ground and ground speed
$--VTG,x.x,T,x.x,M,x.x,N,x.x,K,a*hh<CR><LF>
| | | | | | | | | |
| | | | | | | | | +------- 6
| | | | | | | | +--------- 5
| | | | | | +--+----------- 4
| | | | +--+----------------- 3
| | +--+----------------------- 2
+--+----------------------------- 1
1. Course over ground, degrees true
2. Course over ground, degrees magnetic
3. Speed over ground, knots
4. Speed over ground, km/h
5. Mode indicator(see note)
6. Checksum
NOTE Positioning system Mode indicator:
A = Autonomous
D = Differential
E = Estimated (dead reckoning)
M = Manual input
S = Simulator
N = Data not valid
The positioning system Mode indicator field shall not be a null field.
Data shown in green in case of A and D; red in case of E, M, S
and N.
VWR - Relative (Apparent) wind speed and angle
$--VWR,x.x,a,x.x,N,x.x,M,x.x,K*hh<CR><LF>
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | +----------------------- 5
| | | | | +---+------------------------- 4
| | | +---+--------------------------------- 3
| +--+---------------------------------------------- 2
+------------------------------------------------------ 1
1. Measured wind angle relative to the vessel, 0 to 180
°
, left/right L/R of vessel heading
2. Measured wind speed, knots
3. Wind speed, meters/second
4. Wind speed, Km/Hr
5. Checksum
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