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AP-19
BWR - Bearing and distance to waypoint -rhumb line
$--BWR,hhmmss.ss,llll.lll,a,yyyyy.yyy,a,x.x,T,x.x,M,x.x,N,c--c,a*hh<CR><LF>
| | | | | | | | | | | | | |
| | | | | | | | | | | | | +---- 9
| | | | | | | | | | | | +------ 8
| | | | | | | | | | | +--------- 7
| | | | | | | | | +--+------------- 6
| | | | | | | +--+------------------- 5
| | | | | +--+------------------------- 4
| | | +-----+------------------------------- 3
| +-----+------------------------------------------- 2
+---------------------------------------------------------- 1
1. UTC of observation
2. Waypoint latitude, N/S
3. Waypoint longitude, E/W
4. Bearing, degrees true
5. Bearing, degrees magnetic
6. Distance, nautical miles
7. Waypoint ID
8. Mode indicator(see note)
9. Checksum
NOTE Positioning system Mode indicator:
A = Autonomous
D = Differential
E = Estimated (dead reckoning)
M = Manual input
S = Simulator
N = Data not valid
The Mode indicator field shall not be a null field.
DBT - Depth below transducer
$--DBT,x.x,f,x.x,M,x.x,F*hh<CR><LF>
| | | | | | |
| | | | | | +--------- 4
| | | | +--+----------- 3
| | +--+----------------- 2
+--+----------------------- 1
1. Water depth, feet
2. Water depth, m
3. Water depth, fathoms
4. Checksum