
10.10 AIS options
The AIS options are accessible in the chart application by pressing
the AIS OPTIONS > MARPA & AIS OPTIONS softkeys, or the radar
application by pressing the TARGET TRACKING > MARPA & AIS
OPTIONS softkeys.
Parameter
Description
Options
Vector Length
The time period
specified for drawing
length of vectors.
• 0.5 min
• 1 min
• 3 min
• 6 min
• 12 min
• 30 min
• 60 min
Target History
Plots a target’s previous
position at specified
intervals. The four
most recent position
points are displayed.
If True target vectors
are selected, the four
most recent vessel
position points are also
displayed.
• OFF
• 0.5 min
• 1 min
• 3 min
• 6 min
Parameter
Description
Options
Own Vessel Safe Zone
The safe zone is a ring,
centred on your boat,
within which a target is
considered dangerous
if it will enter this zone
within the Time to Safe
Zone period (see below).
• 0.1 nm
• 0.2 nm
• 0.5 nm
• 1.0 nm
• 2.0 nm
Time to Safe Zone
If a target enters your
safe zone within this time
period, it is considered
dangerous.
• 3 min
• 6 min
• 12 min
• 24 min
Safe Zone Ring
Controls whether the
safe zone ring is
displayed or hidden
on screen.
• Visible
• Hidden
Using AIS
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