Which of the following lights is classified as a white light?

The safe-water light is classified as a white light because it serves a specific purpose in maritime navigation by indicating safe waters. This light is typically displayed on buoys or beacons to signify that the area surrounding the light is clear of hazards and safe for vessels to navigate through. The white light can be seen from all directions, making it essential for guiding mariners.

In contrast, while all-around lights can be white, they are not exclusively classified as white since various colors can be used for different purposes. Red and green lights are used for port and starboard indications respectively, navigating to help distinguish between the sides of vessels and not classified as white lights.