B&G Vulcan Series, Руководство оператора

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Navionics chart settings
Colored seabed areas
Used for displaying different depth areas in different shades of blue.
Annotation
Determines what area information, such as names of locations and
notes of areas, is available to display.
Presentation type
Provides marine charting information such as symbols, colors of the
navigation chart and wording for either International or U.S.
presentation types.
Chart details
Provides you with different levels of geographical layer information.
Safety depth
The Navionics charts use different shades of blue to distinguish
between shallow and deep water.
Safety depth, based on a selected limit, is drawn without blue
shading.
Ú
Note:
The built in Navionics database features data down to 20
m, after which it is all white.
Contours depth
Determines which contours you see on the chart down to the
selected safety depth value.
Rock filter level
Hides rock identification on the chart beneath a given depth.
This helps you to declutter charts in areas where there are many
rocks located at depths well below your vessel's draught.
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Charts | Vulcan Series Operator Manual