Question 41

The Correct Answer is A. **Explanation for A (The vessel's searchlight):** Option A is correct based on the International Regulations for Preventing Collisions at Sea (COLREGs), Rule 36 (Signals to Attract Attention). Rule 36 explicitly states that a vessel may use a "searchlight or a flashing light" directed at the danger in a way that does not embarrass any other vessel, or use sound or light signals specified in Annex III of COLREGs. Using the searchlight (or a flashing light) to attract attention is a non-distress, authorized signal under the collision regulations. **Explanation for B (A red star shell):** Option B is incorrect because a **red star shell** (or rockets or shells throwing red stars) is specifically listed in Annex IV of COLREGs as a **distress signal**. Distress signals indicate grave and imminent danger and the need for assistance, not merely a signal to attract attention for non-distress purposes. **Explanation for C (A burning barrel):** Option C is incorrect because a **flames on the vessel** (such as from a burning barrel or oil drum) is specifically listed in Annex IV of COLREGs as a **distress signal**. **Explanation for D (An orange smoke signal):** Option D is incorrect because an **orange smoke signal** is specifically listed in Annex IV of COLREGs as a **distress signal**.