User's Manual

10
 AIS on Search and Rescue (SAR) Aircraft:
used on airplanes and helicopters to assist search and rescue operation.
AIS Class A vs. SOTDMA Class B vs. CSTDMA Class B
A brief comparison between class A and class B AIS is illustrated in the following table.
P200-SO is an SOTDMA-type class B AIS transponder, P200-CS is a CSTDMA-type class B
AIS transponder.
Type of AIS
Class A
Class B-SO
Class B-CS
Transmit Power
12.5W
5W
2W
Transmit Rate
Up to every 2~3
second
Up to every 5
seconds
Every 30 seconds
AIS Data
Presented
Static, Dynamic,
Voyage
Static, Dynamic
Static, Dynamic
Access Scheme
Technology
SOTDMA (Self-
organizing)
SOTDMA (Self-
organizing)
CSTDMA (Carrier-
sense)
Min. Keyboard &
Display (MKD)
Yes
No
No
Guaranteed
Time Slot
Allocation
Yes
Yes
No
External GPS
Connection
Yes
No
No
Applicable
Standard
IEC 61993-2
IEC 62287-2
IEC 62287-1
IMO Mandate
Mandatory for all
SOLAS vessels
No mandate
No mandate
Applications
Commercial vessels,
fishing boats,
working boats,
passenger boats with
more than 12
passengers
Smaller commercial,
fishing and work
boats, recreational
vessels
Recreational vessels
and small fishing
boats