Question 162Navigation General70% to pass
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?
AI Explanation
The correct answer is B.
Under the IALA Buoyage system, a buoy showing an uninterrupted quick-flashing white light in the North Sea area would be fitted with topmark B, which is a double cone with the points upward. This configuration indicates that the buoy is marking the port (left) side of a channel when entering from the sea.
The other topmark options are incorrect because A is a single cone point upward (starboard side), C is a single cone point downward (preferred channel), and D is a double cone with the points downward (starboard side).
Related Questions
#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? #161 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? #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 _______________.#165 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 D031NG below would be fitted to the buoy?