If the Navi-sailor 4000 is configured with a primary DGPS and secondary DGPS and an offset exists, which position is displayed?

• A. The Primary position is displayed in red
• B. The Secondary position is displayed in red
• C. Both positions are displayed as overlapping icons
• D. No position is displayed

Answer: (A)

When two DGPS sources are configured and there’s a difference between their fixes (an offset), the navigator selects the primary DGPS position as the authoritative reference to display. It shows this chosen position and marks it in red to indicate which source is being used for the displayed position. The secondary position isn’t shown separately in this case, to avoid confusion from two different fixed points.