12. Ais, Dsc Message; What Is Ais; How To Show Or Hide The Ais Symbols; Ais Target Symbols - Furuno TZTL12F Operator's Manual

12. AIS, DSC MESSAGE

12.1

What is AIS?

AIS (Automatic Identification System) is a system that continuously transmits the iden-
tification and position of your ship to AIS-equipped ships within VHF range. All such
ships also receive data from other AIS-equipped ships and display their positions and
other relevant information. The AIS broadcasts this information over a VHF transceiv-
er. The information is as shown below.
• Position
• Name of ship
• Course over ground
• Position of position-fixing equipment
• Heading
12.2

How to Show or Hide the AIS Symbols

1. On the radar display or plotter display, open the [Layers] menu.
2. Turn [AIS Targets] on or off.
12.3

AIS Target Symbols

Target
type
Activated
AIS target
Dangerous
AIS target
Symbol
SOG and
COG vector
ROT (Rate of Turn)
Heading line
Color: Blue for the Class A AIS
: Green for the Class B AIS
Color: Red
• Call sign
• Speed over ground
• Name of position-fixing equipment
• Rate of turn
Description
COG is indicated on the symbol
with a dotted line.
Note: An AIS symbol that has a
"TX marker" (callout) above it
indicates that vessel has trans-
mitted an AIS safety message.
TX marker
(callout)
The target whose CPA and
TCPA are smaller than the
[CPA Alarm Value] and [TCPA
Alarm Value], which are set in
the [Settings] - [Targets] menu,
is indicated as a dangerous tar-
get.
12-1