User's Manual

Synapsis Radar
with Nautoscan NX Pedestal
Operator Manual
Edition Sep 2015
2-157
4265.DOC020102
AIS Target
Symbol
Description of symbols
AIS aids to
navigation –
Virtual
Virtual AIS aids to navigation
(AtoN) shall be presented as an
open diamond with crosshair
centred at reported position.
The sides of the diamond shall be
not more than 6 mm in length.
The diamond shall be drawn using
a thin dashed line style.
The basic colour for a Virtual AIS
AtoN is as used for the physical
AIS AtoN symbols.
If available, AIS AtoN shall be
drawn indicating the purpose of
the AtoN. Purpose symbol shall be
drawn using a thin solid line style
and shall be the same basic colour
as the AIS AtoN symbol. The
height of the purpose symbol shall
be not more than 5 mm in length.
The absence of a charted physical
AtoN is communicated as a
combined state of ‘virtual’ and ‘off
position’. This shall be indicated
with yellow text “Missing” above
the dotted outline diamond using
colour yellow. This symbol shall
have no crosshair at the position
centre. When used against light
background the yellow text may
include a black one pixel outline to
improve readability.
AIS AtoN may be labelled.
Alphanumeric text used to label an
AIS ATON shall be the same basic
colour as the AIS AtoN symbol.
Other information from AIS AtoN,
if available (for example from
Message 14 for the same MMSI),
shall be available on demand.
All virtual AtoNs shall be in their
own layer which shall have own
display on/off selection.
When selected off a permanent
indication shall be provided.