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Appendix 1. Description of Messages
Brief description about common messages of
SI-60B
is as followings.
All following comments are referred by regulations of ITU-R M.1371, IEC-61993-2, NMEA
0183 Specification and more detail comments are indicated in ITU-R M.1371, IEC-61993-2,
NMEA 0183.
VHF Data Link Messages(NMEA 0183 VDM)
VDM Message format
VDM Message type
Data was encapsulated in position “S--S" of VDM. These contents contain following types
and more detail contents are indicated in ITU-R M. 1371.
VDL Message number
VDM Message description
AIS target information
1, 2, 3, 9, 18, 21
Reporting position information
4
Reporting information of Base
station
5
Voyage related data
19
Class B – Extended data information
Treatment of safety message
12
Addressed related safety message
14
Broadcast related safety message
Treatment of external application
6
Binary addressed
8
Binary broadcast
System Control
7
Binary acknowledge
Содержание AIS-50B
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