Question 971 Rules of the Road

90% to pass

BOTH INTERNATIONAL & INLAND Which statement concerning whistle signals is FALSE?

A When a pushing vessel and a vessel pushed are connected in a composite unit, the unit sounds the fog signal of a power-driven vessel.
B A vessel at anchor may sound one short, one prolonged, and one short blast.
C A vessel engaged in towing in fog shall sound a fog signal at intervals of less than one minute.
D A pilot vessel may sound an identity signal on the whistle.
AI Explanation

The correct answer is C. A vessel engaged in towing in fog shall sound a fog signal at intervals of not more than 2 minutes, not less than one minute. The International Regulations for Preventing Collisions at Sea (COLREGS) state that a vessel engaged in towing another vessel shall sound the fog signal for a power-driven vessel at intervals of not more than 2 minutes. This is to alert other vessels to the presence of the towing vessel and its tow. The other answer choices are correct statements about whistle signals.

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