| Type |
Name |
Description |
| 1 |
Position
report |
Scheduled position report
(Class A shipborne mobile equipment) |
| 2 |
Position report |
Assigned scheduled position
report; (Class A shipborne mobile equipment) |
| 3 |
Position
report |
Special position report,
response to interrogation; (Class A shipborne mobile equipment) |
| 4 |
Base station report |
Position, UTC, date and current
slot number of base station |
| 5 |
Static
and
voyage
related
data |
Scheduled static and voyage
related vessel data report; (Class A shipborne mobile equipment) |
| 6 |
Binary
addressed
message |
Binary
data
for
addressed
communication |
7
|
Binary
acknowledgement |
Acknowledgement of received
addressed binary data |
| 8 |
Binary
broadcast
message |
Binary
data
for
broadcast
communication |
9
|
Standard
SAR
aircraft
position
report |
Position report for airborne
stations involved in SAR operations, only |
10
|
UTC/date
inquiry |
Request UTC and date |
11
|
UTC/date
response |
Current UTC and date if available |
12
|
Addressed
safety
related
message |
Safety related data for
addressed communication |
13
|
Safety
related
acknowledgement |
Acknowledgement of received
addressed safety related message |
14
|
Safety
related
broadcast
message |
Safety related data for
broadcast communication |
15
|
Interrogation |
Request for a specific message
type (can result in multiple responses from one or several stations |
16
|
Assignment
mode
command |
Assignment of a specific report
behaviour by competent authority using a Base station |
17
|
DGNSS
broadcast
binary
message |
DGNSS corrections provided by a
base station |
18
|
Standard
Class
B
equipment
position
report |
Standard position report for
Class B shipborne mobile equipment to be used instead of Messages 1, 2,
3 |
19
|
Extended
Class
B
equipment
position
report |
Extended position report for
class B shipborne mobile equipment; contains additional static
information |
20
|
Data
link
management
message |
Reserve slots for Base station(s) |
21
|
Aids-to-Navigation
report |
Position and status report for
aids-to-navigation |
22
|
Channel
management |
Management of channels and
transceiver modes by a Base station |
23
|
Group
assignment
command |
Assignment of a specific report
behaviour by competent authority using a Base station to a specific
group of mobiles |
24
|
Static
data
report |
Additional data assigned to an
MMSI Part A: Name, Part
B:
Static
Data |
25
|
Single slot binary message |
Short unscheduled binary data
transmission (broadcast or addressed) |
26
|
Multiple slot binary message
with Communications State |
Scheduled binary data
transmission (broadcast or addressed) |
27
|
Position report for long range
applications |
Scheduled position report; Class
A shipborne mobile equipment outside base station coverage |
