3 Basic Operation of ECDIS 3-165
ECDIS
e) Depth Alarm (S-57/C-MAP Only)
• Shallow Contour: The color of the sea indicated on the chart for the preset depth can be
changed.
• Safety Contour: Depth smaller (or shallower) than the preset value are displayed
enhanced.
If there is no safety depth line on the chart, a deeper safety depth line
than you set is displayed.
• Safety Depth: Spot soundings smaller than the preset value are displayed enhanced
displayed only at the value.
• Deep Contour: The color of the sea indicated on the chart for the preset depth can be
changed.
• Two Color Depth: Generally, the sea is displayed on charts with sea depths divided into
four colors. However, when [Two Color Depth] is selected, the sea
depths are displayed in two colors, with Line of "Shallow Contour" and
"Safety Contour" displayed as one color, and and Line of "Deep
Contour" displayed as another color.("Safety Depth" is displayed at the
value). This feature is used to clearly indicate and divide the sea into
safe areas and dangerous areas where care must be taken during the
voyage, just like Shallow Pattern described earlier.
• Shallow Pattern: The [Shallow Pattern] check mark adds grid lines to shallow sea set at
Shallow Contour and Safety Contour in the four selectable depths. This
function is for highlighting areas that require special care during the
voyage.
・Show Isolated Danger In Shallow Water：When［Show Isolated Danger In Shallow Water］
is selected, display isolated danger in shallower water than safety
contour as mark
.
[Shallow Contour/Safety Contour/Deep Contour settings]
Land
shallow water
safety water
deep water
Deep Contour
Shallow Contour
Land
Safety Contour
Value:
Min:0m
Max:200m
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