Question 6 MODU02 - Barge Supervisor

The Correct Answer is A ### 2. Why Option A ("Sound two prolonged followed by two short blasts") is correct: This scenario is governed by the International Regulations for Preventing Collisions at Sea (COLREGs), specifically Rule 34 (Maneuvering and Warning Signals) and Rule 9 (Narrow Channels). When a vessel intends to overtake another vessel in a narrow channel and the vessel being overtaken is required to take action to permit safe passing (as stated in the question), specific whistle signals must be used under Rule 34(c)(i): * **Two prolonged blasts followed by one short blast:** Means "I intend to overtake you on your starboard side." * **Two prolonged blasts followed by two short blasts:** Means **"I intend to overtake you on your port side."** Since you intend to overtake on the port side, the correct signal conveying this full intent is two prolonged blasts followed by two short blasts. ### 3. Why the other options are incorrect: * **B) Sound two prolonged blasts on the whistle:** Two prolonged blasts alone is not a valid maneuvering signal under Rule 34 for indicating overtaking intent. (A single prolonged blast is used for warning or when approaching a bend, but not this specific maneuver.) * **C) No signal is necessary:** This is incorrect. Rule 34(c) specifically mandates the use of sound signals when overtaking in a narrow channel where the vessel ahead must cooperate, ensuring mutual understanding and safety. * **D) Sound two short blasts:** This signal means only "I am altering my course to port" (Rule 34(a)(ii)). While your vessel is moving to port, this signal does not convey the full message of intent to overtake in a narrow channel, which requires the distinct, two-part signal specified in Rule 34(c).