2
1.2 Type of AIS
There are mainly two types of AIS transponder: Class A and Class B. The intended nature of
these AIS systems in navigations is different as illustrated in the following table.
CAMINO-101 is a
Class B AIS transponder.
Table 1-2 Type of AIS
Class A AIS
‧
Transmits and receives AIS signal in SOTDMA protocols.
‧
Intended for vessels meeting the IMO AIS carriage requirements.
‧
It is mandatory for all commercial vessels that exceed 300 tons to be
equipped with Class A AIS.
Class B AIS
‧
Transmits and receives AIS signal in CSTDMA protocols.
‧
Not necessarily in accord with IMO AIS carriage requirements.
‧
It is not mandatory for vessels to be equipped with Class B AIS.
‧
Suitable for recreational vessels or fishing boats, in enhancing its safety at
sea.
1.3 AIS Message Type
The CAMINO-101 transmits
following message types.
Table 1-3 CAMINO-101 AIS message type
Type of Message
Data Details
Static Data
Maritime Mobile Service Identity number (“MMSI”)
Call sign and name
Type of ship
Length and beam
GPS Antenna location
Dynamic Data
Position of the vessel
Course Over Ground (hereinafter called “COG”)
Speed Over Ground (hereinafter called “SOG”)
Heading
Dynamic Reports
Speed of the ship
Status of the ship
SRM
Alarm
Safety
