Question 360 Rules of the Road

The correct answer is A) one short blast. When being overtaken in a narrow channel, the vessel being overtaken should sound one short blast to indicate their agreement for the overtaking vessel to pass on their starboard (right) side, as per the Inland Navigation Rules (Rule 34(c)). The other answer choices are incorrect because: B) two prolonged blasts is the signal to indicate uncertainty or disagreement, C) two prolonged followed by two short blasts is the signal for crossing situations, and D) one prolonged, one short, one prolonged, and one short blast is the signal for vessels meeting head-on.