Raymarine AIS700, Installation Instructions Manual

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PGN Description
Tran-
smit Re-
ceive
129794 AIS class A static and
voyage related data
•
129795 AIS addressed binary
message
•
129796 AIS Acknowledge
•
129797 AIS binary broadcast
message
•
129798 AIS SAR aircraft
position report
•
129801 AIS addressed SRM
•
129802 AIS safety broadcast
binary message
•
129809 AIS class B CS static
data report part A
•
129810 AIS class B CS static
data report part B
•
Appendix D AIS overview
Your AIS700 uses digital radio signals to exchange
'real-time' information between vessels, shore based
stations, or aids to navigation (AToNs) on dedicated
VHF frequencies. This information is used to identify
and track vessels in the surrounding area and to provide
fast, automatic and accurate collision avoidance data.
Although AIS augments your Radar app by operating
in Radar blind spots and detecting smaller AIS-fitted
vessels, it does not replace your Radar, as it relies on
receiving transmitted AIS information and therefore
cannot detect objects such as landmasses, navigational
beacons or vessels not equipped with AIS.
Note:
NEVER assume that AIS is displaying information
from all vessels in the area, because:
• Not all vessels are fitted with AIS
• Although it is mandatory for larger commercial
vessels to carry AIS, it is not mandatory to use it.
AIS should be used only to augment Radar
information, not substitute it.
AIS limitation
Never assume that your AIS is detecting all vessels in
the area. Always exercise due prudence and do not use
AIS as a substitute for sound navigational judgement.
Classes of AIS
Class A transceivers
Class A AIS transceivers transmit and receive AIS
signals. AIS transceivers are currently mandatory on
all commercial vessels exceeding 300 tons that travel
internationally (SOLAS vessels).
The following information can be transmitted by a Class
A AIS system:
• Static data (Includes information such as MMSI
number, vessel name, vessel type, call sign, IMO
number, length, beam and GNSS antenna location).
• Voyage related data (Includes information such as
draft, cargo, destination, ETA and other relevant
information).
• Dynamic data (Includes information such as time
(UTC), ship’s position, COG, SOG, heading, rate of turn
and navigational status).
• Dynamic reports (Ship’s speed and status).
• Messages (Alarms and safety messages).
Remember that not all vessels will transmit all of the
information.
Class B transceivers
Class B AIS transceivers transmit and receive AIS
signals, but use a reduced set of data compared to Class
A (see
Data Summary
). A Class B AIS transceiver can be
fitted on any vessel not fitted with a Class A transceiver,
but is not mandatory aboard any vessel.
Data Summary
Data
Receiver
(receive)
Trans-
ceiver
(transmit)
Trans-
ceiver (re-
ceive)
Ship's
name Yes Yes Yes
Type Yes Yes Yes
Call sign Yes Yes Yes
IMO
number
Yes No Yes
Length
and beam Yes Yes Yes
Antenna
location Yes Yes Yes
Draft Yes No Yes
Cargo In-
formation Yes Yes Yes
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