Question 49 ONC01 - Master/Chief Mate Unlimited Tonnage

The Correct Answer is C **Explanation for C (The vessel is in distress):** The firing of a gun or the continuous sounding of any fog signal apparatus at intervals of about one minute is a universally recognized, codified signal of distress under the International Regulations for Preventing Collisions at Sea (COLREGs), specifically Annex IV (Distress Signals). This signal is meant to attract attention and clearly indicate that the vessel is in grave and imminent danger and requires assistance. **Explanation for why other options are incorrect:** * **A) The gun is being used to sound passing signals:** Passing signals (or maneuvering signals) are short blasts sounded by whistle or siren, specified by COLREGs Rule 34 (Maneuvering and Warning Signals), and are used in close proximity to other vessels to indicate intention (e.g., "I intend to overtake you on your starboard side"). A gun fired at one-minute intervals is not a standard passing signal. * **B) All vessels are to clear the area:** While a vessel in distress may necessitate other vessels altering course or taking action, the signal itself does not directly mean "clear the area." It is a request for assistance due to grave peril. * **D) All is clear and it is safe to pass:** Distress signals inherently mean that conditions are *not* clear, and assistance is needed. A periodic signal like this is used only for emergency situations, not to indicate safety.