3.1 ECDIS should be capable of displaying all
SENC information.
3.2 SENC information available for display during
route planning and route monitoring should be subdivided into three
categories, display base, standard display, and all other information
(see appendix 2).
3.3 ECDIS should present the standard display
at any time by a single operator action.
3.4 When a chart is first displayed on ECDIS,
it should provide the standard display at the largest scale available
in the SENC for the displayed area.
3.5 It should be easy to add or remove information
from the ECDIS display. It should not be possible to remove information
contained in the display base.
3.6 It should be possible for the mariner to select
a safety contour from the depth contours provided by the SENC. ECDIS
should give the safety contour more emphasis than other contours on
the display.
3.7 It should be possible for the mariner to select
a safety depth. ECDIS should emphasize soundings equal to or less
than the safety depth whenever spot soundings are selected for display.
3.8 The ENC and all updates to it should be displayed
without any degradation of their information content.
3.9 ECDIS should provide a means of ensuring that
the ENC and all updates to it have been correctly loaded into the
SENC.
3.10 The ENC data and updates to it should be
clearly distinguishable from other displayed information, such as,
for example, that listed in appendix
3.