Question 50

The Correct Answer is B A continuous sounding of a fog whistle (or any prolonged sounding device) by a vessel, both internationally (COLREGs) and inland (Inland Rules), is the recognized signal that **a vessel is in distress** and requires assistance. This is one of the designated signals found in Rule 37 and Annex IV of the International Regulations for Preventing Collisions at Sea (COLREGs). **Why other options are incorrect:** * **A) A request that the draw span of a bridge to be opened:** Bridge opening requests typically involve short, distinct blasts (e.g., one or two prolonged blasts followed by one short blast, depending on local rules), not a continuous sounding. * **C) That the vessel is anchored:** A vessel anchored in restricted visibility is required to sound specific signals defined in Rule 35 (e.g., rapid ringing of the bell for 5 seconds at intervals of not more than 1 minute), but not a continuous blast. * **D) A vessel is broken down and drifting:** While a broken-down vessel may certainly be in distress, the specific signal indicating a continuous sounding is universally understood as the general distress signal (Option B), rather than solely indicating a breakdown or drifting status.