BOTH INTERNATIONAL & INLAND Which signal should be used to indicate that your vessel is in distress?

Correct Answer: Option B — Continuously sounding the fog whistle

Annex IV, paragraph 1(l) lists the continuous sounding of any fog-signaling apparatus as a recognized distress signal. This method is used when standard distress signals are unavailable, providing a persistent, attention-grabbing acoustic alert to indicate that a vessel is in grave and imminent danger and requires immediate assistance.