Furuno FMD-3100 - How to Select Range Calculation Method

2. OPERATIONAL OVERVIEW
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2.8.5 How to select range calculation method
The range calculation method for the EBL and VRM can be selected to Rhumbline or
Great Circle. Do as follows to select a calculation method.
1. Open the menu, then select [NAV Tools] and [Geometry] to show the [Geometry]
page.
2. Select [Rhumbline] or [Great Circle] with the drop down list box for [EBL/VRM].
3. Click the [Save] button to save the setting, then click the close button to finish.