# Commission Implementing Regulation (EU) 2019/838 of 20 February 2019 on technical specifications for vessel tracking and tracing systems and repealing Regulation (EC) No 415/2007, Division 3.5.3.2: Number of persons on board (Inland specific message FI 55)

Extent: E+W+S+N.I.

This message shall be sent by inland vessels only, to inform about the number of persons (passengers, crew, shipboard personnel) on board. The message shall be sent with binary message 6 preferably on event or on request using International Application Identifier binary functional message 2.
Table 3.5
Number of Persons on board report
Parameter
Bit
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; Default = 0; 3 = do not repeat any more
Source ID
30
MMSI number of source station
Sequence number
2
0 — 3
Destination ID
30
MMSI number of destination station
Retransmit flag
1
Retransmit flag shall be set upon retransmission: 0 = no retransmission = default;
1 = retransmitted.
Spare
1
Not used, shall be set to zero. Reserved for future use
Binary data
Application identifier
16
DAC = 200, FI = 55
Number of crew members on board
8
0 — 254 crew members, 255 = unknown = default
Number of passengers on board
13
0 — 8 190 passengers, 8 191 = unknown = default
Number of shipboard personnel on board
8
0 — 254 shipboard personnel, 255 = unknown = default
Spare
51
Not used, shall be set to zero. Reserved for future use.
Total
168
Occupies one slot

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Source: https://www.legislation.gov.uk/eur/2019/838/annex/division/3/division/3.5/division/3.5.3/division/3.5.3.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2019-838/annex/division-3/division-3.5/division-3.5.3/division-3.5.3.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.