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Number of persons on board

Introduction/Additional information: 

This message should be used by a ship to report the number of persons on board (e.g., on request by a competent authority).

Permitted as from: 
01/06/2010
Registrant: 
IMO Circ. 289
Physical link: 
AIS
Message number (0=VDES-VDE): 
6
DAC or VPFI: 
1
FI / Message ID: 
16
State: 
in force
State link: 
Number of persons on board
Number of slots (max): 
1
Last modified: 
15/05/2023 - 12:26
Details: 
Parameter No. of bits  Description 
Message ID  6 Identifier for Message 6; always 6. 
Repeat Indicator  2 Used by the repeater to indicate how many times a message has been repeated. 
0 - 3 
0 = default 
3 = do not repeat anymore 
Source ID  30 MMSI number of source station. 
Sequence Number  2 0 - 3; refer to ITU-R M.1371-3, Annex 2, § 5.3.1. 
Destination ID  30 MMSI number of destination station. 
Retransmit Flag  1 Retransmit Flag should be set upon retransmission. 
0 = no retransmission = default 
1 = retransmitted 
Spare  1 Not used. Set to zero. 
IAI  16 DAC = 001; FI =16 (see ITU-R M.1371-3, Annex 5, § 2.1). 
Number of Persons  13 Number of persons currently on-board, including crew members. 
0 = not available = default 
1 - 8,190 
8,191 = 8,191 or greater 
Spare  35 Not used. Set to zero. 
Total  136 Occupies one slot