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Capability reply

Introduction/Additional information: 

This IFM should be used by a ship or a base station to reply to a capability interrogation message.
The reply contains a table of the implemented application identifiers.

This IFM should be returned to the interrogating station only.

Permitted as from: 
01/01/1998
Not to be used after: 
15/06/2007
Registrant: 
ITU-R.M.1371-1
Physical link: 
AIS
Message number: 
6
DAC: 
1
FI: 
4
State: 
replaced
State link: 
Capability reply
Number of slots (max): 
1
Last modified: 
20210129T231826
Details: 
 Parameter  Number of bits   Description  
 IAI/DAC code   10  See Annex 2, Table 20  
 Capability mask   128  IAI/DAC FI capability table, two consecutive bits should be used for every IAI/DAC FI as follows: first bit: IAI/DAC FI available if set to 1  IAI/DAC FI not available if set to 0 =default  second bit: reserved for future use, such as version indication  should be set to zero  
 Spare   6  Spare. Should be set to zero  
 Total number of bits   80  

Annex 2, Table 20

 DAC   Function identifier   Resulting application identifier (binary)   Resulting application identifier (hex)   Description  
1 0  0000 0000 0100 0000   40  Use of these messages, e.g. for aids-to-navigation, VTS, search and rescue, should be as defined in Annex 5  
1 1  0000 0000 0100 0001   41
1 2  0000 0000 0100 0010   42
1 3  0000 0000 0100 0011   43
1  ...    0000 0000 01XX XXXX    ...  
1 63  0000 0000 0111 1111    007F