What assumption must be made when using a buoy as an aid to navigation?

When using a buoy as an aid to navigation, it's crucial to understand that the buoy may not be in the charted position. Navigational buoys can be moved by currents, storms, or accidents, which may cause them to drift from their designated spots. Therefore, while navigators rely on buoys for guidance, they must also cross-reference the buoys’ positions with their own charts and GPS information to ensure their accuracy.

The assumption that the buoy is always in the correct position is misleading because it overlooks the potential for environmental factors to alter its location. Likewise, assuming a buoy is permanently placed and has no markings neglects the critical role that navigational aids play in conveying important information through their identifiers and positions. Recognition of these factors is essential for safe navigation.