Question 162Navigation General
70% to passIn 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?
A
A
B
B
C
C
D
D
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).
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