Raymarine C140w Fish Finder User Manual


 
7.1 3D chart overview
The 3D chart provides a number of features to help you navigate
with your vessel.
Note: Before you can use the 3D chart applicaton, your
multifunction display must be receiving accurate heading and
position data from a suitable source (such as a GPS, for
example). You must also have 3D chart cards containing 3D
cartography for the appropriate area.
Safety
The 3D chart is an aid to visualization. When navigating with your
3D chart you should also check your 2D chart and ensure that a
route is safe. Until you are familiar with interpreting the 3D chart,
you should take every opportunity to compare the displayed objects
with visual targets, such as buoys and coastal structures. You
should practice harbour and coastal navigation during daylight and
in clear weather conditions. The simulator mode can also be used
to help you gain experience.
The 3D application should not be used as a substitute for good
navigational practice nor for ofcial government paper charts. Do
not use this application before you have read this chapter.
Uses for the 3D Chart
3D cartography introduces an easy-to-use chart format that provides
you with a three dimensional graphical view of land and sea
contours around your boat. Land masses are shown in green, the
shade depending on the height above sea level. Water, the sea-bed
and submerged objects are shown in varying shades of blue.
Much of the information available on a conventional chart can be
shown in three dimensions, giving you an accurate easy-to-view
image of the area around your boat that can help you plan:
Fishing spots.
What shing pattern to use.
Safe routes.
If the area that you are in is new to you, or visibility is poor, 3D
cartography can help to give you the condence to know where you
are and what is around you. As with a conventional chart, active
waypoints and routes can also be shown on the 3D chart.
86 C-Series Widescreen user reference