Raymarine AIS700 Installation Instructions Manual page 63

Data
SOG
Gyro heading
Rate of turn
Navigational status
Safety message
*Class B transceivers do not transmit a Gyro heading unless the transceiver is receiving an NMEA HDT
sentence from an external source.
Data reporting intervals
AIS information is classed as either static or dynamic. Static information is broadcast, when data has been
amended, or upon request, or by default, every 6 minutes.
The reporting rates for dynamic information depend on speed and course change, and are given in the
following tables.
Note: The reporting rates shown here are for reference and may not be the rate at which information is
actually received by your AIS transceiver. This is dependent on a number of factors, including but not
limited to antenna height, gain and signal interference.
Class A systems
Ships Dynamic Conditions
At anchor or moored, moving less
than 3 knots
At anchor or moored, moving
greater than 3 knots
0-14 knots
14-23 knots
Faster than 23 knots
Class B systems
Ships Dynamic Conditions
SOTMDA – 0 to 2 knots
SOTMDA – 2 to 14 knots
SOTMDA – 14 to 23 knots
SOTMDA – Greater than 23 knots
CSTMDA – 0 to 2 knots
CSTMDA – Greater than 2 knots
Other AIS sources
Source
Search and Rescue (SAR) aircraft
Aids to navigation (AToN)
AIS base station
AIS overview
Receiver (receive)
Yes
Yes
Yes
Yes
Yes
Reporting rate
Not changing course
3 Minutes
10 Seconds
10 Seconds
6 Seconds
2 Seconds
Transceiver (transmit)
Yes
Yes*
No
No
No
Changing course
3 Minutes
10 Seconds
3 1/3 Seconds
2 Seconds
2 Seconds
Reporting rate (nominal)
3 Minutes
30 Seconds
15 Seconds
5 Seconds
3 Minutes
30 Seconds
Reporting rate
10 Seconds
3 Minutes
10 Seconds or 3.33 Seconds, depending on
operating parameters
Transceiver (receive)
Yes
Yes
Yes
Yes
Yes
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