Raymarine C140w - Manual (Page 141)

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 141