Question 334 Rules of the Road

The correct answer is B) a power-driven vessel when crossing less than half a mile ahead of another power-driven vessel. This is the correct answer because the Inland Navigation Rules state that power-driven vessels crossing less than half a mile ahead of another power-driven vessel must sound a passing signal. This is a requirement to alert the other vessel of the crossing situation and the intent to pass. The other options are incorrect because A) towing vessels only need to sound passing signals in certain circumstances, C) the requirement to sound signals upon sighting another vessel rounding a bend applies to all vessels, not just power-driven vessels. Option D is incorrect because not all the scenarios listed require passing signals to be sounded.