Danger areas make it
possible to delimit an area of any shape around a danger, for example: an area
of reefs, the edges of a channel. When the boat enters the area, the area
display is modified and an audible alarm is triggered (alert sound plus voice
synthesis message). The display of areas is different depending on whether the
boat is in the area or outside the area.
We can act on the color of the
lines, their thickness and their style when the boat is outside or in a danger
area. It is possible to obtain a very discreet display of the areas when the
boat is outside an area so as not to overload the map and a very visible display
as soon as the boat enters an area.
By using danger areas you can
secure the whole of a planned navigation.
The number of danger areas is
of a danger area to ward off a reef:
the danger area:
Example of a
very discreet display when the boat is outside the area and very visible when
the boat enters a area:
a danger area only takes a few seconds and is done directly on the current
chart. The recording of the danger area is independent of the chart. If you
change the chart, the danger area is displayed on the new