White lights can sometimes be found on what kind of buoys?

White lights are typically found on navigational buoys that are used to mark channels or indicate hazards in the water. These buoys are often referred to as "lighted buoys." They serve to enhance visibility, especially in low-light conditions such as at night or during fog. The white light on these buoys can help mariners identify the locations and significance of the buoys more effectively.

Lighted buoys might include different types of markers, including:

1. Channel Markers: Indicating safe passage through navigable waters.
2. Mooring Buoys: Marking spots where vessels can anchor securely.
3. Hazard Markers: Indicating rocks, shoals, or other underwater hazards.

These lights can also flash or be steady (fixed) and are part of the broader system of aids to navigation provided to enhance maritime safety.