Question 49 ONC04 - Mate of LT 500-1600 GRT

The Correct Answer is C **Explanation for Option C (The vessel is in distress):** According to the International Regulations for Preventing Collisions at Sea (COLREGs), Annex IV (Distress Signals), certain sounds are specifically designated as signals indicating that a vessel is in distress and requires assistance. Hearing the continuous firing of a gun, or the firing of a gun at intervals of about one minute, is an internationally recognized acoustic signal of distress. This signal alerts other vessels that the source vessel is facing a grave and imminent danger and needs immediate help. **Explanation for Incorrect Options:** * **A) The gun is being used to sound passing signals:** Passing signals (e.g., one short blast to indicate "I am altering course to starboard") are sounded using the vessel's whistle or horn, and are typically short blasts, not the continuous or one-minute interval firing of a gun. * **B) All vessels are to clear the area:** While a distress signal *implies* that other vessels should approach cautiously to render assistance, the signal itself is not a command for all vessels to clear the area. It is a request for help. * **D) All is clear and it is safe to pass:** The firing of a gun at one-minute intervals is the antithesis of a "clear and safe" signal. It is a severe warning of danger and emergency. Signals indicating safety or permission to pass are not communicated via continuous gun fire.