Question 446 Rules of the Road

90% to pass

INTERNATIONAL ONLY Which is TRUE when your vessel is moving from a berth alongside a quay (wharf)?

A You must sound a long blast
B You must sound three short blasts
C You must sound a prolonged blast
D No signal is required
AI Explanation

The correct answer is D) No signal is required. According to the International Regulations for Preventing Collisions at Sea (COLREGS), no sound signal is required when a vessel is moving from a berth alongside a quay (wharf). The COLREGS do not mandate any specific sound signal in this situation, as it is generally expected that the vessel's movement will be observed and communicated through visual means. The other options (A, B, and C) are incorrect, as they describe sound signals that are not required for this specific scenario under the international regulations.

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