Question 66 Rules of the Road

The correct answer is B) two short blasts. According to the USCG Navigation Rules and Regulations, when overtaking another power-driven vessel in a narrow channel, the vessel doing the overtaking must indicate their intention by sounding two short blasts on the whistle. This signals to the other vessel that you intend to overtake them on their port (left) side. The other answer choices are incorrect because they do not match the specific whistle signal required for this overtaking maneuver in a narrow channel. Options A, C, and D do not properly communicate the intent to overtake on the port side.