Raymarine AIS500, Installation Instructions Manual

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Data
Class A
(receive)
Class B
(send)
Class B
(receive)
Call sign Yes Yes Yes
IMO number Yes No No
Length and beam Yes Yes Yes
Antenna location Yes Yes Yes
Draft Yes No No
Cargo
Information Yes Yes Yes
Destination Yes No No
ETA Yes No No
Time Yes Yes Yes
Ship’s position Yes Yes Yes
COG Yes Yes Yes
SOG Yes Yes Yes
Gyro heading Yes Yes* Yes
Rate of turn Yes No No
Navigational
status Yes No No
Safety message Yes No Yes
*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 an AIS500 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 Reporting rate
At anchor or moored 3 Minutes
0-14 knots 10 Seconds
0-14 knots and changing course 3
1
/
3
Seconds
14-23 knots 6 Seconds
14-23 knots and changing course 2 seconds
Faster than 23 knots 2 seconds
Faster than 23 knots and changing
course 2 seconds
Class B systems
Ships Dynamic Conditions Reporting rate
0 to 2 knots 3 Minutes
Above 2 knots 30 Seconds
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