Question 27 GLI08 - Limited OUPV

The Correct Answer is B. Option B ("If the vessel is power-driven, and are in sight of one another") is correct because it accurately reflects the requirements for sound signals prescribed by the U.S. Inland Rules of the Road concerning overtaking. Rule 34(a)(i) requires a power-driven vessel, when maneuvering to pass or overtake, to sound the required whistle signal **if she is within sight of the other vessel**. The requirement applies specifically to power-driven vessels and depends on visual proximity ("in sight of one another") to communicate intent when maneuvering. ### Why Other Options Are Incorrect: * **A) If both are in sight of one another:** While visual proximity is required, this option is incomplete because the rule specifically mandates that the **overtaking vessel must be power-driven** to sound the whistle signals for intent (passing/overtaking). * **C) If another power-driven vessel is within half a mile:** The Inland Rules base the requirement for maneuvering signals (like overtaking) on visibility ("in sight of one another"), not a fixed distance like a half-mile. A vessel might be more than half a mile away and still "in sight," requiring the signal, or less than half a mile away but obscured (not "in sight"), which would not trigger the maneuvering signal requirement. * **D) If the vessel is within half a mile of that vessel:** Similar to Option C, the half-mile distance is irrelevant for triggering the requirement to sound the whistle signal for maneuvering/overtaking intent. The rule relies on the vessels being "in sight" and the maneuvering vessel being power-driven.