What color is used to indicate the primary position on the Navi-sailor 4000 display?

• A. Red
• B. Green
• C. Blue
• D. Yellow

Answer: (A)

Colors on navigation displays are chosen to communicate priority quickly. For the Navi-sailor 4000, the primary position is shown in red because red commands attention immediately and conveys urgency or importance. This high-contrast choice helps a navigator distinguish the main reference point at a glance, even in bright conditions or when the display is cluttered, since red stands out against typical sea-blue backgrounds and darker map elements. Other colors serve different meanings: green often marks safe or active statuses, blue can denote water or informational overlays, and yellow might indicate caution or secondary alerts. Using red for the primary position keeps the most critical reference unmistakable and helps fast decision-making.