A spherical buoy may be lettered rather than being numbered.
A spherical buoy can be defined as a type of buoy of which the larger part of the superstructure or the upper part of the body that has a spherical shape and it's distinctively lettered.
In this context, we can infer and logically deduce that a spherical buoy may be lettered and it is usually anchored in a swimming pool to mark the course for swimmers and triathletes.
Read more on buoy here: https://brainly.com/question/14931928
#SPJ1