Question 125 Rules of the Road

90% to pass

BOTH INTERNATIONAL & INLAND When do the Rules state that risk of collision shall be deemed to exist?

A if the bearing of an approaching vessel does not appreciably change
B whenever two vessels are on opposite courses
C if one vessel approaches another so as to be overtaking
D whenever a vessel crosses ahead of the intended track of another vessel
AI Explanation

The correct answer is A) if the bearing of an approaching vessel does not appreciably change. The International Regulations for Preventing Collisions at Sea (COLREGS) state that risk of collision shall be deemed to exist if the bearing of an approaching vessel does not appreciably change. This indicates that the two vessels are on a constant bearing, and the distance between them is decreasing, creating a risk of collision. The other options are incorrect because: B) and D) do not necessarily indicate a risk of collision, as vessels can cross paths without a risk of collision; C) refers to the overtaking situation, which is a separate rule under the COLREGS.

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Official Resources
USCG Navigation Rules (COLREGS) 33 CFR Navigation Rules USCG Navigation Center
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