Furuno 1722C - 3.5 Chart Card Management

3. PLOTTER OPERATION
3-10
3.5 Chart Cards
3.5.1 Chart card overview
Your system reads FURUNO and NavCharts™ (NAVIONICS) charts, or C-MAP
charts, depending on its specification.
When you insert a suitable chart card in the slot and your boat is near any chart
graphic data, a chart appears. If a wrong card is inserted or a wrong chart scale
is selected, land masses will appear hollow. Insert the proper card and select a
suitable chart scale. 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.