APPENDIX
AP-24
OSD- Own ship data
$--OSD,x.x,A,x.x,a,x.x,a,x.x,x.x,a*hh<CR><LF>
| | | | | | | | | |
| | | | | | | | | +--------- 10
| | | | | | | | +----------- 9
| | | | | | | +-------------- 8
| | | | | | +------------------ 7
| | | | | +--------------------- 6
| | | | +------------------------ 5
| | | +--------------------------- 4
| | +------------------------------ 3
| +--------------------------------- 2
+------------------------------------ 1
1. Heading, degrees true
2. Heading status: A=data valid, V=data invalid
3. Vessel course, degrees true
4. Course reference, B/M/W/R/P (see note)
5. Vessel speed
6. Speed reference, B/M/W/R/P (see note)
7. Vessel set, degrees true---Manually entered
8. Vessel drift (speed) ---Manually entered
9. Speed units, K(km/h) / N(Knots) / S(statute miles/h)
10. Checksum
NOTES - Reference systems (speed/course):
B = bottom tracking log
M = manually entered
W = water referenced
R = radar tracking (of fixed target)
P = positioning system ground reference
