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About your AIS class B transponder | V3100 User Manual
Static data is information about the vessel which must be pro-
grammed into the AIS transponder.
This includes:
• Maritime Mobile Service Identity (MMSI)
• Vessel name
• Vessel call sign (if available)
• Vessel type
• Location of GPS antenna on the vessel
The transponder also receives safety-related messages (SRM) from
other vessels or persons who are in distress.
SOTDMA Class B AIS broadcasts ship´s static data every 6 minutes.
Ship dynamic data will be transmitted per following reporting
interval:
Ship speed
Nominal reporting
inverval
Increased reporting
interval
>23 knots Every 5 seconds Every 15 seconds
Between 14-23 knots Every 15 seconds Every 30 seconds
Between 2-14 knots Every 30 seconds Every 30 seconds
≤ 2 knots or at
anchored or moored
Every 3 minutes Every 3 minutes
The Class B “SO” AIS follows the rules set by ITU-R M.1371-5, and
increases the reporting interval to “Increased Reporting Interval” in
accordance with Table above when less than 50 % of the slots of
each of the last four consecutive frames are free. When more than
65 % of the slots of each of the last four consecutive frames are free,
the Class B “SO” AIS reports at the “Nominal Reporting Interval”.
In most countries the operation of AIS equipment is included under
the vessel’s marine VHF license provisions. The vessel on to which
the AIS unit is to be installed must therefore possess a current VHF
radiotelephone license which lists the AIS system, vessel Call Sign
and MMSI number.
Warning: An MMSI number is required in order for the AIS
transponder to operate. Please contact the relevant authority in
your country for more information.
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