Question 338 Rules of the Road

The correct answer is B) another power-driven vessel when both power-driven vessels are in sight of one another. This is correct because the Inland Navigation Rules state that a power-driven vessel intending to overtake another power-driven vessel shall indicate its intention by the following signals on its whistle: one short blast to mean "I intend to overtake you on your starboard side", two short blasts to mean "I intend to overtake you on your port side". These signals must be made when the vessels are in sight of one another. The other options are incorrect because A) applies to all vessels, not just power-driven vessels, C) is too restrictive by limiting the signals to only when within half a mile, and D) does not specify that the signals are for power-driven vessels intending to overtake.