Question 340 Rules of the Road

The correct answer is A) two power-driven vessels are in sight of one another and are meeting within a half mile. This is because the Inland Navigation Rules (Rule 34) state that when two power-driven vessels are meeting head-on or nearly head-on within a half mile of each other, they must sound one short blast each to indicate a port-to-port passing agreement. The one and two short blast signals are used to communicate with other vessels in this situation on inland waters. The other options are incorrect because they do not match the specific situation described in the question, which is for two power-driven vessels meeting head-on within a half mile on inland waters.