A cylindrical buoy that tapers to a blunt point at the top is called a _____________ buoy.

The correct term for a cylindrical buoy that tapers to a blunt point at the top is a spindle buoy. This type of buoy has a distinct shape that sets it apart from other buoy types used in maritime navigation. Spindle buoys are often used in situations where precise placement is necessary, as their tapered design helps them stand out against the water's surface, improving visibility for vessels navigating the area.

Understanding the shape and function of different buoys is crucial for safe maritime operations, as each type serves a specific purpose. For example, a can buoy is typically cylindrical and has a flat top, while a nun buoy has a conical shape and is often used to mark shipping channels. Recognizing these differences can enhance one’s ability to navigate effectively and interpret navigation markers properly on the water.