Question 465 Rules of the Road

The correct answer is A) A vessel being overtaken in a narrow channel. According to the International Regulations for Preventing Collisions at Sea (COLREGS), the signal of one prolonged, one short, one prolonged, and one short blast, in that order, is the appropriate signal given by a vessel being overtaken in a narrow channel. This signal indicates to the overtaking vessel that the vessel being overtaken is aware of the situation and is taking action to allow the overtaking vessel to pass safely. The other options are incorrect because: B) A vessel at anchor would not give this signal, C) A vessel in distress would use different distress signals, and D) A vessel engaged on pilotage duty underway would not use this particular signal.