Question 6 UFV01 - Master - Uninspected Fishing Vessels

The Correct Answer is A **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 9(e)(i) regarding Narrow Channels. When a power-driven vessel intends to overtake another power-driven vessel in a narrow channel, and the vessel to be overtaken has to take action to permit safe passing, the overtaking vessel must signal its intention using the prescribed sound signal: * **Two prolonged blasts:** Indicates intention to overtake (required by COLREG Rule 34(c) when applying Rule 9(e)). * **Followed by two short blasts:** Specifically means "I intend to overtake you on your port side" (COLREG Rule 34(c)(i)). Therefore, the complete signal is **two prolonged blasts followed by two short blasts**. **Why the other options are incorrect:** * **B) Sound two prolonged blasts on the whistle:** This signal indicates an intention to overtake, but it lacks the critical final component specifying the side (port or starboard) on which the overtaking will occur, as required by Rule 34(c) when the overtaken vessel must take action. * **C) No signal is necessary:** A signal is strictly necessary under COLREG Rule 9(e)(i) because the overtaken vessel must take action (i.e., maneuvering to permit safe passing). Sound signals must be exchanged before the maneuver begins. * **D) Sound two short blasts:** This signal, in isolation, means "I am altering my course to port." It does not convey the intention to overtake in a narrow channel requiring the other vessel to maneuver, nor does it fulfill the requirement for the initial two prolonged blasts.