Question 161Navigation General70% to pass
In the North Sea area, you sight a buoy with a quick light showing 3 flashes every 10 seconds. Which topmark in illustration D030NG below would be fitted to this buoy under the IALA Buoyage Systems?
AI Explanation
The correct answer is D.
Under the IALA Buoyage System, a buoy with a quick light showing 3 flashes every 10 seconds would be fitted with a topmark consisting of three black spheres, as shown in illustration D030NG. This topmark configuration indicates that the buoy is marking a special feature or area, such as a wreck or a zone with specific navigational requirements.
The other answer choices are incorrect because they depict different topmark configurations that do not match the lighting characteristics described in the question.
Related Questions
#159 What is characteristic of an isophase light? #160 The Light List shows that a navigational light has a nominal range of 5 miles and a height above water of 21 feet (6.4 meters). Your height of eye is 32 feet (9.8 meters) and the visibility is 1.0 mile. At what approximate range will you first sight the light? #162 In the North Sea area, you sight a buoy showing an uninterrupted quick-flashing white light. Which of the four topmarks shown in illustration D031NG below will this buoy be fitted with under the IALA Buoyage system? #163 As your vessel is heading southward along the east coast of the United States, you encounter a buoy showing a red flashing light. How should you pass this buoy? #164 Under the Uniform State Waterway Marking System a mooring buoy is painted _______________.