Raymarine C90w, C140w manual 3D chart overview, Safety, Uses for the 3D Chart

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 official 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 fishing 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 confidence 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