Question 302Navigation General

The correct answer is B) An unlighted can buoy. According to the U.S. Coast Guard's navigation rules, odd-numbered buoys are used to mark the left side of a channel when entering from the open sea or heading upstream. Can buoys, which are cylindrical in shape, are commonly used as unlighted channel markers and can be odd-numbered. The other options are incorrect because: A) Spherical buoys are typically used as mooring buoys, not channel markers; C) Red buoys can be either odd or even-numbered; and D) Yellow buoys are typically used as special purpose markers, not channel markers.