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 = 20

Message Linkage ID

10

A source specific running number, unique across all binary messages equipped with Message Linkage ID. Used to link additional information to the message by a Text Description message. The Message Linkage ID and the first six digits of the source MMSI uniquely identify the sent message.

1 - 1,023
0 = not available = default.

Berth Length

9

Berth length, in 1 metre steps.

1 - 510 metres
511 = 511 metres or greater
0 = undefined = default

Water Depth at Berth

8

Water depth at berth, in 0.1 metre steps.

0.1 - 25.4 metres
255 = 25.5 or greater
0 = undefined = default

Mooring Position

3

0 = undefined = default
1 = port-side to
2 = starboard-side to
3 = Mediterranean mooring
4 = mooring buoy
5 = anchorage
6 -7 (reserved for future use)

Berth Date and Time

UTC Date and Time

UTC Month

4

1 - 12
0 = not available = default

UTC Day

5

1 - 31

0 = not available = default

UTC Hour

5

0 - 23
24 = not available = default

UTC Minute

6

0 - 59
60 = not available = default

Services availability

1

0 = services types unknown = default; set all "Type of Services Available" indicated below to zero.
1 = services types are known; see "Type of Services Available" below.

Type of Services Available

52

Available services at berth. Each service described with 2 bits, coded as:
0 = service not available or requested = default
1 = service available
2 = no data or unknown
3 = not to be used

List of services
1 = agent
2 = bunker/fuel
3 - chandler
4 = stevedore
5 = electrical
6 = potable water
7 = customs house
8 =  cartage
9 =  crane(s)
10 =  lift(s)
11 =  medical facilities
12 =  navigation repair
13 =  provisions
14 =  ship repair
15 =  surveyor
16 =  steam
17 =  tugs
18 =  waste disposal (solid)
19 =  waste disposal (liquid)
20 =  waste disposal (hazardous)
21 =  reserved  ballast exchange
22 =  additional services are also available
23 - 24   (reserved for regional use)
25 - 26   (reserved for future use)

Name of Berth

120

20 characters 6 bits ASCII, as defined in ITU-R M. 1371-3, Table 44.

Centre position of Berth,

Longitude

25

Longitude in 1/1,000 min, ±180 degrees as per 2's complement (East = positive, West = negative).

181 = not available = default

Centre position of Berth, Latitude

24

Latitude in 1/1,000 min, ±90 degrees as per 2's complement (North = positive, South = negative).

91 degrees = not available = default

Spare

0

Not used. Set to zero.

Total

360

Occupies 2 slots