Question 41 ONC06 - Master LT 100 GRT

The Correct Answer is A. **Explanation for why option A ("The vessel's searchlight") is correct:** According to the International Regulations for Preventing Collisions at Sea (COLREGs), Rule 36 (Signals to attract attention), a vessel may use any light or sound signal that cannot be mistaken for any signal authorized elsewhere in these Rules. Specifically, Rule 36 permits the use of a vessel's searchlight to direct a beam toward the danger in a manner that will not embarrass any vessel. It is a commonly accepted practice under this rule to flash the searchlight intermittently toward another vessel to attract attention, provided it does not cause confusion or blindness. **Brief explanation for why each of the other options is incorrect:** * **B) A red star shell:** This signal is specifically listed in Annex IV of COLREGs as a **Distress Signal** (rockets or shells throwing red stars). Using it would indicate the vessel is in grave and imminent danger, not simply trying to attract routine attention. * **C) A burning barrel:** This is also explicitly listed in Annex IV of COLREGs as a **Distress Signal** (flames on the vessel, such as from a burning oil barrel). Using this signal signifies distress. * **D) An orange smoke signal:** This signal is also listed in Annex IV of COLREGs as a **Distress Signal** (smoke signal producing orange-colored smoke). Using this signal signifies distress.