Sperry Marine VISIONMASTER FT ECDIS-E, Руководство пользователя, Страница: 165 / 425

ECDIS-E User Guide Charts
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3. To mark all listed objects as viewed click on the Mark All As
Viewed button.
As each item is selected its background is displayed in a lighter shade and
a white line defines its outline. A detailed description is given below the list
and the danger object is highlighted in the chart display area.
When all dangerous objects have been acknowledged in the Dangers
window the red background is removed from the Dangers icon, although
the objects will remain listed. The system will remove objects from the
Dangers list if it has been 120 seconds or more since own ship's safety
region and a particular dangerous object last overlapped.
Chart Dangers Information
The chart dangers information area at the bottom of the window gives
detailed information on each dangerous object selected. This information
will include the following:

Object Type - e.g. Depth Area, Caution Area

Latitude/Longitude position of object

Database - the chart database, e.g. SevenCs S-57.

Chart - the reference number of the nearest chart set to the
dangerous object.
Depth area information will additionally include the following data:

Depth Range Value 1:

Depth Range Value 2:
The figure shown with Value 1: usually represents the minimum depth in
metres of the Depth Area. This value may be 0 or a negative value if the
depth area represents height above water (e.g., land mass or a harbour
wall).
The figure shown with Value 2: usually represents the maximum depth in
metres of the Depth Area.