1 This circular provides information on the display
of AIS-SART, AIS Man Overboard (MOB) and EPIRB-AIS devices today.
AIS-SARTs (AIS-search and rescue transmitters) are part of the GMDSS
and have been able to be used as an alternative to radar (X-band)
search and rescue radar transponders (SARTs) on SOLAS ships since
1 January 2010.
2 EPIRB-AIS devices will be 406 MHz distress alerting
devices that contain an additional AIS transmitter developed using
the same AIS-SART technology, where the AIS component is used as an
aid in locating that EPIRB-AIS.
3 AIS Man Overboard (MOB) devices are now available
as locating aids for persons at risk in the water. Once such a situation
has been determined as being an emergency, AIS Man Overboard (MOB)
devices may be used as an aid in locating that person.
4 In order to protect the integrity of the VHF
data link used by AIS, AIS devices, including AIS-MOB devices, are
not intended to be used to routinely locate or track people not being
in an emergency situation.
5 AIS-SARTs may be indicated on a newer graphical
display of AIS by a circle with an "X" inside it, as shown (extract
AIS search and rescue transmitter (AIS-SART)
6 Alternatively, the AIS-SART may be indicated
on an older graphical display of AIS as a normal (sleeping) AIS target
(isosceles triangle), as shown (extract from SN.1/Circ.243), taking
into account that the triangle may be oriented by Course over Ground
7 The symbol remains the same, whether the AIS-SART
is in Active or Test Mode; however, there is associated message text
displayed, when an AIS-SART target is selected.
8 An AIS-SART uses the following associated message
9 A Man Overboard (MOB) device using AIS will
be displayed in the same way as an AIS-SART (see paragraphs 5 to 7
10 A Man Overboard (MOB) device using AIS may
use the same associated message text as in paragraph 8 above, but
newer devices might have associated message text displayed as follows:
11 EPIRB-AIS devices will be displayed in the
same way as an AIS-SART (see paragraphs 5 to 7 above).
12 EPIRB-AIS devices may use the same associated
message text as in paragraph 8 above, but newer devices might have
associated message text displayed as follows:
13 The user identity of the EPIRB-AIS indicates
the identity of the AIS transmitter of the EPIRB-AIS and not the MMSI
of the ship.