Coast Guard Exams
Question 148Navigation General70% to pass

While steaming north of the Irish coast, you sight a buoy which shows the light rhythm shown in illustration D028NG below. How would you pass this buoy?

Diagram for question 148
AI Explanation
The correct answer is C) East of the buoy. This is because the illustration D028NG depicts a green flashing buoy, which indicates that the buoy should be passed on the green, or easterly, side. The International Association of Lighthouse Authorities (IALA) Buoyage System, which is used in the United States and many other countries, specifies that green buoys should be passed on the starboard (right) side when traveling northbound. Therefore, the vessel should pass the buoy to the east. The other answer choices are incorrect because passing the buoy to the north, west, or south would not be in accordance with standard navigational practices and the IALA Buoyage System.

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