AIS Message Definitions

AIS Message: shipdata (::)

Description:

Class A vessel data report

Name NumberOfBits ArrayLength Type Units Description
MessageID 6 uint AIS message number. Must be 5
RepeatIndicator 2 uint Indicated how many times a message has been repeated
0: default
3: do not repeat any more
UserID 30 uint Unique ship identification number (MMSI)
AISversion 2 uint Compliant with what edition. 0 is the first edition.
IMOnumber 30 uint vessel identification number (different than mmsi)
callsign 6 7 aisstr6 Ship radio call sign
name 6 20 aisstr6 Vessel name
shipandcargo 8 uint Type of ship and cargo type
dimA 9 uint m FIX: write a description
dimB 9 uint m FIX: write a description
dimC 6 uint m FIX: write a description
dimD 6 uint m FIX: write a description
fixtype 4 uint Method used for positioning
0: undefined
1: GPS
2: GLONASS
3: combined GPS/GLONASS
4: Loran-C
5: Chayka
6: integrated navigation system
7: surveyed
ETA 20 uint FIX: break this out
draught 8 udecimal m Maximum present static draught. 25.5 is 25.5 m or greater
destination 6 20 aisstr6 Where is the vessel going
dte 1 uint Data terminal ready
0: available
1: not available
Spare 1 uint Reserved for definition by a regional authority.