Question 711 Rules of the Road

90% to pass

BOTH INTERNATIONAL & INLAND Which of the shapes shown in illustration D016RR below must you show when at anchor?

Rules of the Road Question 711 diagram
A A
B B
C C
D D
AI Explanation

The correct answer is A. According to the International and Inland Navigation Rules, vessels at anchor must display a single all-round white light, which corresponds to shape A in the illustration. This light is required to be visible all around the horizon for a distance of at least 2 miles. The other shapes in the illustration (B, C, and D) are not the appropriate signals for a vessel at anchor. Shape B represents a vessel underway, shape C represents a vessel restricted in its ability to maneuver, and shape D represents a vessel constrained by its draft.

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