Which statement about spar buoys is true?

• A. They are never lighted
• B. They are tall and cylindrical
• C. They are never used as winter replacements
• D. They are sometimes lighted

Answer: (A)

Spar buoys are tall, slender marks that stand upright and are used to outline channels. Because of their simple, slim design, they are typically not equipped with lights, so they are not lighted at night. This contrasts with other buoy types (like can or nun buoys), which are bulkier and more often fitted with lights to aid nighttime navigation. Describing a spar buoy as tall and cylindrical would mix it up with other shapes, since spar buoys are slender rather than bulky. The idea of winter replacements isn’t a standard characteristic tied to spar buoys or their lighting. So, the statement that spar buoys are never lighted aligns with the common description of this buoy type.