Question 538 Rules of the Road

90% to pass

BOTH INTERNATIONAL & INLAND Which light(s) must a sailing vessel of over 20 meters in length while underway exhibit?

A stern light
B white masthead light
C red light over a green light at the masthead
D combined lantern
AI Explanation

The correct answer is A) stern light. According to the International Regulations for Preventing Collisions at Sea (COLREGS), a sailing vessel over 20 meters in length while underway must exhibit a stern light. This is required by Rule 21(c) of the COLREGS, which states that a sailing vessel shall exhibit a stern light. The other options are incorrect as they do not fully meet the COLREGS requirements for a sailing vessel over 20 meters in length. For example, a white masthead light (option B) or a combined lantern (option D) would not be sufficient on its own.

Related Questions
Q826:BOTH INTERNATIONAL & INLAND Your 18-meter vessel is under sail at night displayi... Q951:BOTH INTERNATIONAL & INLAND In restricted visibility, a vessel restricted in her... Q655:BOTH INTERNATIONAL & INLAND By day, when it is impracticable for a small vessel ... Q670:BOTH INTERNATIONAL & INLAND There are two classes of vessels which do not have t... Q986:BOTH INTERNATIONAL & INLAND A vessel engaged in fishing while at anchor shall so...

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