Question 717 Rules of the Road

90% to pass

BOTH INTERNATIONAL & INLAND A vessel at anchor will show which shape?

A cylinder
B cone
C ball
D double cone, apexes together
AI Explanation

The correct answer is C) ball. According to the International Regulations for Preventing Collisions at Sea (COLREGS) and the Inland Navigation Rules, a vessel at anchor must display a single black ball shape during the day. This is specified in Rule 30 of both the international and inland navigation rules. The ball shape indicates to other vessels in the area that the anchored vessel is not underway and is securely moored. The other answer choices are incorrect because a cylinder, cone, or double cone shape would not be the proper day shape for an anchored vessel under the navigation rules.

Related Questions
Q476:INTERNATIONAL ONLY Which is TRUE for a light used to signal passing intentions? ... Q311:INLAND ONLY Your power-driven vessel is meeting another vessel head-on. To compl... Q328:INLAND ONLY Which lights are required for a single barge being towed alongside? ... Q990:BOTH INTERNATIONAL & INLAND A vessel engaged in fishing while at anchor shall so... Q249:BOTH INTERNATIONAL & INLAND Every vessel which is directed by these Rules to kee...

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