9.1 ECDIS should be capable of displaying information
for:
9.2 The effective size of the chart presentation
for route monitoring should be at least 270 mm x 270 mm.
9.3 The display should be capable of complying
with the colour and resolution recommendations of IHO.footnote
9.4 The method of presentation should ensure that
the displayed information is clearly visible to more than one observer
in the conditions of light normally experienced on the bridge of the
ship by day and by night.