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3.6 Changing the Object Category
(S-57/C-MAP Only)
SENC (System Electronic Navigation Chart) information available for display is subdivided into three
object categories, base display, standard display, and all information(other). You can change the object
category using the display panel.
Base Display:
Important objects that cannot be deleted from the charts, such as coastline and own ship's
safety contour.
Standard Display:
Objects less important than base display, such as drying line, indication of fixed and
floating aids to navigation and boundaries of fairways, channels, etc.
Other Display:
Other objects, such as spot soundings, submarine cables and pipelines, ferry routes and
details of all isolated dangers.
Note:
• The initial chart screen status is "Standard Display". For safety for sailing, use the standard display
or Other display, and not the base display.
You can change the object category by left-clicking the [Base], [Standard], or [Other] on the display
panel.
1) Left-click Object Category drop-down list.
• You can also use the menu to select an object category. Also, in the [Standard] and [Other]
display methods, you can specify how objects belonging to these categories should be
displayed.
set for display.
For selection of object display, see 3.28.1 "Setting S-57/C-MAP/ARCS Options."
About the display in the chart area:
For better understanding, you can think that various layers are
used to make up the chart display. For example, standard display
consists of the base display and information (objects) for
standard display. This means that the base display is the basic
one layer and the information for standard display is another
layer, and the standard display is made up by overlapping both
layers.
Another additional layers may be own ship, user chart, event
mark, EBL/VRM, radar image, etc.
3 Basic Operation of ECDIS
will display all objects that belong to standard display and that have been
will display all objects that belong to standard display.
3-64
Category drop-down list
You will see all layers being selected.
EVENT mark, etc..
Layer
Objects of "Other"
Layer
Objects of "Standard"
Layer
Objects of "Base"
Layer
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