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 (0=VDES-VDE):

DAC or VPFI:

FI / Message ID:

State:

replaced

State link:

Capability reply [1]

Number of slots (max):

Last modified:

29/01/2021 - 23:18

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