What mark indicates a safe water area for vessel passage?

The mark that indicates a safe water area for vessel passage is represented by a white buoy with red vertical stripes. These buoys are known as safe water markers, signaling areas where there is sufficient water depth for navigation, allowing vessels to pass without risk of running aground or encountering hazards.

This type of buoy serves as a guide through channels, and its specific design helps boaters recognize that they are entering a designated navigable area. The vertical red stripes are a universal sign used in various nautical regulations to ensure clear communication about water safety and navigation routes.

Understanding the meaning of different markers is essential for safe boating practices, as it informs boaters where they can safely travel without complications. Other buoy types, while serving different purposes such as marking hazards or indicating channel boundaries, do not convey the specific message of safe passage as clearly as the white buoy with red stripes does.