Furuno 1943, 1933, 1833 manual Chart Cards, Chart card overview, Indices and chart enlargement

3. PLOTTER OPERATION

3.5Chart Cards

3.5.1Chart card overview

Your plotter uses FURUNO and NavCharts™ (NAVIONICS) charts, or C-MAP charts, depending on the type of display unit you have.

When you insert a suitable chart card in the slot and your boat is any cartographic object, a chart appears. If a wrong card is inserted or a wrong chart scale is selected, landmasses will appear hollow. Chart icons appear at the top of the display to help you select a suitable chart scale. The table below shows the chart icons and their meanings.

Chart icons and their meanings

Icon Meaning

Proper card is not inserted or chart scale is too small. Operate the RANGE key to adjust chart scale.

Chart scale is too large. Operate the RANGE key to adjust chart scale.

Suitable chart scale is selected.

3.5.2Indices and chart enlargement

When the [RANGE] key is operated, you will see several frames appear on the chart. These frames are called indices and they show you what parts of the chart can be enlarged in the current range.

Sample chart (Japan), showing indices

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