Question 106 Rules of the Road

The correct answer is D) None of the above. According to the Inland Navigation Rules, when two vessels have reached an agreement by radiotelephone to pass astern of each other, no action is required other than to carefully execute the agreed-upon maneuver. Sounding a whistle signal or changing course to starboard is not necessary in this situation, as the vessels have already communicated and agreed on the passing arrangement. The other options are incorrect because they would not be the appropriate actions to take in this scenario where the vessels have already agreed on the passing arrangement through radio communication.