You are traveling upstream on a river at dusk. You see a buoy with the number
4 and a flashing red light. What should you do?
A
Call the U.S. Coast Guard.
B
Keep the buoy on your starboard (right)
side.
C
Go around the buoy on either side.
D
Stop for dinner.



Answer :

Final answer:

When approaching a buoy with a number 4 and a flashing red light while traveling upstream, keep the buoy on your port (left) side.


Explanation:

When traveling upstream on a river and encountering a buoy with a number 4 and a flashing red light, you should keep the buoy on your port (left) side. In maritime navigation, red buoys are known as nun buoys and they mark the left side of the channel when entering from seaward. Remembering the saying about port wine being red can help recall this knowledge.


Learn more about navigational buoy colors and meanings here:

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