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Inland Capability Interrogation reply

Introduction/Additional information: 

Introduction:

The Inland Capability Interrogation reply should be used by an application connected to the Inland AIS unit to reply (using Message 6) to an Inland Capability Interrogation (DAC 200, FI 2) function message.. The reply contains the availability status of the application for each function identifier in the Inland AIS ASM branch (DAC 200) or other DAC. An Inland AIS station answers to an interrogation by ITU 1371 IFM 3 using IFM 4.

Permitted as from: 
18/10/2021
Registrant: 
EU
Physical link: 
AIS
Message number (0=VDES-VDE): 
6
DAC or VPFI: 
200
FI / Message ID: 
4
Version: 
0
Technical point of contact: 

RIS VTT

State: 
in force
Number of slots (max): 
1
Last modified: 
14/03/2023 - 11:49
Details: 
 

Parameter

Bit

Description
 

Message ID

6

Identifier for Message 6; always 6, ack needed

Repeat Indicator

2

Used by the repeater to indicate how many times a message has been repeated. See ITU-R M.1371-5, § 4.6.1, Annex 2; 0-3; 0 = default; 3 = do not repeat any more

Source ID

30

MMSI number of source station

Sequence number

2

0 – 3; refer to ITU-R M.1371-5, Annex 2, § 5.3.1.

Destination MMSI

30

MMSI number of destination station.

Retransmit flag

1

Retransmit Flag. 0 = no retransmission = default; 1 = retransmitted.

Spare

1

not used, should be set to zero, reserved for future use

Binary data

Designated Area Code

10

DAC=200

Function Identifier

6

FI=4

Version indicator

3

The version number of the message default = 0, rest for future use

Provided DAC code

10

DAC (default = 200)

FI availability

192

FI capability table, triplets of three consecutive bits should be used for every FI, in the order FI 0, FI 1, … FI 63.

The use of bits per triplet: xxx per FI:

000 = FI (ASM) is not implemented = default

001 to 111 = value for "version of ASM" (value = version number as provided in the ASM + 1);

example: value 001 = FI (ASM) is implemented in version 0,

value 111 = FI (ASM) is implemented in version 7 or 8

Spare

59

Not used, should be set to zero, reserved for future use
 

Total

352

2 slot message