Question 40 Rules of the Road

90% to pass

INLAND ONLY What whistle signal would a power-driven vessel overtaking another in a narrow channel, and wishing to pass on the other vessel's port side sound?

A one short blast
B two prolonged blasts followed by one short blast
C two prolonged blasts followed by two short blasts
D two short blasts
AI Explanation

The correct answer is D) two short blasts. According to the Inland Navigation Rules, a power-driven vessel overtaking another in a narrow channel and wishing to pass on the other vessel's port side should sound two short blasts on the whistle. This signal indicates the overtaking vessel's intention to pass on the port side of the other vessel. The other answer choices are incorrect because they do not match the specific whistle signal required for this scenario. One short blast (A) is used for different situations, and the two-blast sequences in B and C are not the appropriate signals for passing on the port side in a narrow channel.

Related Questions
Q526:BOTH INTERNATIONAL & INLAND An anchored vessel is servicing an aid to navigation... Q658:BOTH INTERNATIONAL & INLAND Which shapes is a vessel conducting mine clearing op... Q166:BOTH INTERNATIONAL & INLAND A sailing vessel is proceeding along a narrow channe... Q70:BOTH INTERNATIONAL & INLAND The steering and sailing rules for vessels in restri... Q113:INLAND ONLY A power-driven vessel proceeding downstream in a narrow channel on t...

Ready to test your knowledge?

Take a Rules of the Road Practice Exam
Official Resources
USCG Navigation Rules (COLREGS) 33 CFR Navigation Rules USCG Navigation Center
← Previous Question All Questions Next Question →

Pass Your Coast Guard Licensing Exams!

Study offline, track your progress, and simulate real exams with the Coast Guard Exams app

Download on App Store Get it on Google Play Download for Mac