Marina Exam Reviewer: Two power-driven vessels are crossing within one half mile of each other, with Vessel "P" as the stand-on vessel, and Vessel "Q" as the give-way vessel. Vessel "P" sounds two short blasts on the whistle. What signal should vessel "Q" sound?

Marina Exam Reviewer

Two power-driven vessels are crossing within one half mile of each other, with Vessel "P" as the stand-on vessel, and Vessel "Q" as the give-way vessel. Vessel "P" sounds two short blasts on the whistle. What signal should vessel "Q" sound? 

A. None of these 
B. Two short blasts 
C. One short blast 
D. Five short and rapid blasts 


Answer:  D. Five short and rapid blasts