User's Manual

Synapsis Radar
with Nautoscan NX Pedestal
Operator Manual
Edition July 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