Question 156Navigation General70% to pass
In the North Sea area, you sight a buoy showing a quick white light with 9 flashes every 15 seconds. Which of the four topmarks shown in illustration D030NG below would be fitted to the buoy?
AI Explanation
The correct answer is C.
The quick white light with 9 flashes every 15 seconds indicates that the buoy is a special purpose buoy. According to the IALA Buoyage System, a special purpose buoy is marked with a topmark consisting of two black spheres (choice C).
The other options are incorrect because A and B represent navigation buoys, while D represents a wreck marking buoy, none of which are appropriate for a special purpose buoy in the North Sea area.
Related Questions
#154 Navigational marks used for informational or regulatory purposes are _______________.#155 In the North Sea area, you sight a buoy showing a quick white light with 6 flashes, followed by one long flash at 15 second intervals. Which of the four topmarks shown in illustration D030NG below would be fitted to this buoy? #157 If within 500 yards (460m) of a Northern Right Whale you are lawfully obligated to _______________.#158 The Light List shows that a navigational light has a nominal range of 19 miles and a height above water of 52 feet (15.8 meters). Your height of eye is 42 feet (12.8 meters) and the visibility is 10.0 miles. At what approximate range will you first sight the light? #159 What is characteristic of an isophase light?