Question 523 Rules of the Road
90% to passBOTH INTERNATIONAL & INLAND The stern light shall be positioned such that it will show from dead astern to how many degrees on each side of the stern of the vessel?
A
22.5°
B
67.5°
C
112.5°
D
135.0°
AI Explanation
The correct answer is B) 67.5°. According to the International Regulations for Preventing Collisions at Sea (COLREGS) and the Inland Navigation Rules, the stern light must show from dead astern to 67.5° on each side of the vessel. This ensures that the stern light is visible from a wide arc around the stern, allowing other vessels to determine the orientation of the ship. The other options are incorrect because A) 22.5° is too narrow, C) 112.5° is too wide, and D) 135.0° is also too wide for the required visibility of the stern light.
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