Raymarine AIS700 Installation Instructions Manual page 47

Trans-
Receiver ceiver
Data (receive) (transmit)
Destina- Yes No
tion
ETA Yes No
Time Yes Yes
Ship's Yes Yes
position
COG Yes Yes
SOG Yes Yes
Gyro Yes Yes*
heading
Rate of Yes No
turn
Naviga- Yes No
tional sta-
tus
Yes No
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.
AIS overview
Trans- Note: The reporting rates shown here are for
ceiver (re- reference and may not be the rate at which
ceive) information is actually received by your AIS
transceiver. This is dependent on a number of
Yes
factors, including but not limited to antenna height,
gain and signal interference.
Yes
Class A systems
Yes
Ships Dynamic
Conditions
Yes
Yes
At anchor
Yes
or moored,
moving less
Yes
than 3 knots
At anchor
Yes
or moored,
moving greater
than 3 knots
Yes
0-14 knots
14-23 knots
Yes
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
Reporting rate
Not changing Changing
course course
3 Minutes 3 Minutes
10 Seconds 10 Seconds
10 Seconds 3 1/3 Seconds
6 Seconds 2 Seconds
2 Seconds 2 Seconds
Reporting rate (nominal)
3 Minutes
30 Seconds
15 Seconds
5 Seconds
Ships Dynamic Reporting rate (nominal)
Conditions
CSTMDA – 0 to 2 knots 3 Minutes
CSTMDA – Greater than 30 Seconds
2 knots
Other AIS sources
Source Reporting rate
Search and Rescue 10 Seconds
(SAR) aircraft
Aids to navigation (AToN) 3 Minutes
AIS base station 10 Seconds or 3.33
Seconds, depending on
operating parameters
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