10-1
10. OTHER FUNCTIONS
10.1 AIS Operations
AIS (Automatic Identification System) is a system that continuously transmits the iden-
tification and position of your boat to AIS transponder equipped vessels within com-
municating range. All such vessels also receive data from other AIS transponder
equipped vessels and display their positions and other relevant information. The AIS
broadcasts this information over a VHF transceiver. Data include:
A maximum of 200 targets can be displayed, in the order in which they are received.
Connection to a Class A or B AIS transponder is required.
10.1.1 AIS target symbols
The symbols of AIS targets out of the display range are displayed smaller.
• Position
• Call sign
• Name of vessel
• Speed over the ground
• Course over the ground
• CPA
• Heading
• MMSI no.
• TCPA
Symbol Target category Color Description
AIS target White COG is indicated with a sol-
id line.
Dangerous AIS
target
White
(flashing)
An AIS target is declared a
dangerous target when its
CPA and TCPA put the tar-
get on a collision course
with your boat.
Lost AIS target White An AIS target becomes a
lost target if a signal is not
received from the AIS tar-
get for x* minutes. The lost
target symbol is erased if a
signal is not received for an
additional x* minutes. *The
time depends on the AIS
transponder. Check your
AIS owner’s manual for de-
tails.
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