Question 155Navigation General70% to pass
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?
AI Explanation
The correct answer is A.
The key characteristic of this buoy is the quick white light with 6 flashes followed by one long flash at 15 second intervals. This pattern corresponds to the Fairway Buoy, which according to the IALA Buoyage System is marked with a topmark of two black cones point-to-point (option A).
The other topmark options B, C, and D do not match the buoy's light characteristics, and would be used to mark different types of buoys in the IALA system, such as port-hand, starboard-hand, or isolated danger markers.
Related Questions
#153 A vessel sighting a northern right whale dead ahead should _______________.#154 Navigational marks used for informational or regulatory purposes are _______________.#156 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? #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?