Ais Overview - Raymarine A Series Installation And Operation Instructions Manual

16.1 AIS overview

The AIS feature enables you to receive information
broadcast by other vessels, and to add these vessels
as targets in the chart and radar applications.
With an optional AIS unit connected to your system
you can:
• Display targets for any other AIS-equipped
vessels.
• Display voyage information being broadcast by
these targets, such as their position, course,
speed and rate-of-turn.
• Display basic or detailed information for each
target vessel, including safety-critical target data.
• Set up a safe zone around your vessel.
• View AIS alarm and safety-related messages.
• Add AIS-equipped friends and regular contacts to
a "Buddy List"
AIS information is displayed in the form of an overlay
in the chart and radar applications. Additional data is
displayed in a dialog box, for example:
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Item
1
2
3
4
5
6
7
AIS-equipped vessels in the surrounding area
are displayed in the chart or radar application as
triangular targets. Up to 100 targets are displayed.
As the vessel's status changes, the symbol for the
target changes accordingly.
Vectors can be displayed for each target. These
vectors indicate the vessels direction of travel and
the distance it will travel over a specified period of
time (COG / SOG vector). Targets displayed with
their vectors are referred to as 'active targets' and
are scaled according to the size of the vessel. The
larger the vessel, the larger the target. You can
either display all targets or just dangerous targets.
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097°T
11. 6 kt
1 . 2 37n m
00h 04m 33s
Description
Dangerous target (flashes).
Safe zone (defined by
distance and / or time).
AIS target vessel.
Heading.
Direction of turn.
COG/SOG vector.
Safety critical data.
How AIS Works
AIS uses digital radio signals to broadcast 'real-time'
information between vessels and shore-based
stations via dedicated VHF radio frequencies. This
information is used to identify and track vessels in
the surrounding area and to provide fast, automatic
and accurate collision avoidance data. The AIS
features complement the radar application, as AIS
can operate in radar blind spots and can detect
smaller vessels equipped with AIS.
Note: It may not be mandatory for vessels to be
fitted with operational AIS equipment. Therefore,
you should not assume that your multifunction
display will show ALL vessels in your area. Due
prudence and judgement should be exercised.
AIS should be used to complement radar, NOT
substitute it.
AIS Simulator Mode
Raymarine recommends that you use the simulator
function to familiarize yourself with the AIS
features. When the simulator function is enabled
(homescreen > Set-up > System Settings >
Simulator), it displays 20 AIS targets within a 25
nm range. These targets are displayed using the
appropriate AIS target's status symbol, and move
around the screen as if they were real targets.
Note: Incoming safety messages are NOT
displayed while the simulator is enabled.
D12220-1
a Series / c Series / e Series