Question 35 RVR03 - Mate of LT 500-1600 GRT

The Correct Answer is B. **Explanation for B (More than two vessels crossing):** Option B, "More than two vessels crossing," is considered a "special circumstance" under the International Regulations for Preventing Collisions at Sea (COLREGs), specifically Rule 2 (Responsibility). Rule 2(b) states that in construing and complying with the Rules, due regard must be had to all dangers of navigation and any special circumstances, including the limitations of the vessels involved, which may make a departure from the Rules necessary to avoid immediate danger. While the COLREGs provide detailed rules for scenarios involving two vessels (meeting, crossing, or overtaking), they do not explicitly detail the right-of-way procedures when three or more vessels are involved in a close-quarters situation, especially a crossing scenario. In such complex, multi-vessel situations, the standard crossing rules (Rule 15, which dictates that the vessel that has the other on her own starboard side shall keep out of the way) become impractical or insufficient to ensure safety. Therefore, the situation is classified as a "special circumstance," requiring the mariners involved to act based on the general principles of good seamanship and Rule 2 to prevent a collision, which may necessitate departing from the specific crossing rules. **Why the other options are incorrect:** * **A) Speed in fog:** While speed must be moderated in fog (restricted visibility) according to Rule 19 (Conduct of Vessels in Restricted Visibility), the requirement to maintain a safe speed is explicitly covered by the rules (Rules 6 and 19). It is a regulated maneuver, not a special circumstance requiring a departure from the rules. * **C) Two vessels meeting:** This is a fundamental, explicitly regulated scenario covered by Rule 14 (Head-on Situation). The Rule mandates clear actions (both vessels shall alter course to starboard). It is a standard situation, not a special circumstance. * **D) Vessel at anchor:** The status and required lights/shapes of a vessel at anchor are explicitly defined and regulated by Rule 30 (Anchored Vessels and Vessels Aground). The act of being at anchor itself is a standard condition of navigation, not a special circumstance that necessitates deviating from the COLREGs to avoid immediate danger.