Question 6 GLI01 - Master-Unlimited Tonnage

The Correct Answer is A ### Explanation for Option A (Sound two prolonged followed by two short blasts) Option A is correct because, under the International Regulations for Preventing Collisions at Sea (COLREGs), specifically Rule 9(e) concerning narrow channels and Rule 34(c) regarding maneuvering signals, this is the prescribed signal for the situation described: 1. **Narrow Channel/Seeking Permission:** When intending to overtake a vessel in a narrow channel, and the vessel being overtaken has to take action, permission must be requested and granted. 2. **The Signal:** Rule 34(c)(ii) mandates that a vessel intending to overtake on the **port side** shall sound two prolonged blasts followed by two short blasts. This signal clearly conveys: "I intend to overtake you on your port side." ### Explanation of Incorrect Options **B) Sound two prolonged blasts on the whistle** This sound signal is not defined in the COLREGs as the specific signal for seeking permission to overtake on the port side in a narrow channel. It lacks the short blasts necessary to specify the maneuver and the side of the overtaken vessel. **C) No signal is necessary** This is incorrect. Under Rule 9(e), if the vessel to be overtaken must take action to permit safe passing, the maneuvering vessel *must* initiate the signal to state its intention and request permission. Failing to signal would violate the Rule. **D) Sound two short blasts** This signal means, "I am altering my course to port" (Rule 34(a)(ii)). While the maneuvering vessel may turn to port during the maneuver, this signal alone does not convey the required message of seeking permission to overtake in a narrow channel where the other vessel must take preparatory action. The full combined signal (two prolonged followed by two short) is required.