Question 231Navigation General

70% to pass

You are steaming southward along the west coast of the United States when you sight a buoy showing a flashing green light. How should you pass this buoy?

A Pass it close aboard on either side.
B Pass it on either side but well clear of it.
C Leave it to your starboard.
D Leave it to your port.
AI Explanation

The correct answer is C) Leave it to your starboard. This is the correct answer because according to the U.S. Aids to Navigation System, a buoy showing a flashing green light indicates the preferred channel to the right (starboard) side of the vessel. When navigating along the coast, you should pass this type of buoy by leaving it to your starboard (right) side. The other options are incorrect because: A) Passing close aboard on either side goes against the standard practice of leaving green buoys to starboard. B) Passing well clear is unnecessary and could lead to navigational errors. D) Leaving the buoy to port would be the incorrect side according to the navigation rules.

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Official Resources
USCG Navigation Rules (COLREGS) 33 CFR Navigation Rules USCG National Maritime Center
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