Question 318Navigation General70% to pass
Which navigational mark may only be lettered?
AI Explanation
The correct answer is D) A spherical buoy.
Navigational marks that may only be lettered are spherical buoys. According to the U.S. Coast Guard's Aids to Navigation System, spherical buoys are the only buoy shape that can have a letter designation, such as "C" or "G", to indicate their purpose or location. The other options, such as can buoys, day-shapes, and red buoys, do not use lettering and instead use other visual characteristics to convey their meaning.
Related Questions
#316 In United States waters, a buoy having red and white vertical stripes has a light characteristic of _______________.#317 A mid-channel buoy, if lighted, will show a _______________.#319 A spherical buoy may be _______________.#320 You are approaching a drawbridge and must pass through during a scheduled closure period. What signal should you sound? #321 What is a lighted safe water mark fitted with to aid in its identification?