APPENDIX
AP-9
Data sentences
Data used is shown in bold italics.
Input sentences
ABK - UAIS Addressed and binary broadcast acknowledgement
$--ABK,xxxxxxxxx,x,x.x,x,x*hh<CR><LF>
| | | | | |
| | | | | +--- 6
| | | | +----- 5
| | | +------- 4
| | +---------- 3
| +------------- 2
+------------------- 1
1. MMSI of the addressed AIS unit
2. AIS channel of reception
3. Message type
4. Message sequence number
5. Type of acknowledgement
6. Checksum
ACK – Acknowledge alarm
$--ACK,x.x,x.*hh<CR><LF>
| +------------ 2
+------------------- 1
1. Local alarm number (identifier)
2. Checksum
BWC - Bearing and distance to waypoint (Not available on IMO radar)
$--BWC, hhmmss.ss, llll.ll, a yyyyy.yy, a, x.x, T, x.x, M, x.x, N, c--c, a*hh<CR><LF>
Checksum
Mode indicator
(see note 1)
Waypoint ID
Distance, nautical miles
Bearing, degrees true
Waypoint longitude, E/W
Bearing, degrees magnetic
Waypoint latitude, N/S
UTC of observation
NOTE 1: 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.
