The stern light shall show from dead astern to how many degrees on each side of the stern?

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Multiple Choice

The stern light shall show from dead astern to how many degrees on each side of the stern?

Explanation:
The stern light is meant to indicate the rear of the vessel and is visible over a 135-degree arc centered on the stern. That means it extends 67.5 degrees to each side of dead astern. So the light is visible from dead astern and sweeps 67.5° to port and 67.5° to starboard, giving a total coverage of 135° behind the vessel. In bearings, that’s from about 112.5° to 247.5°.

The stern light is meant to indicate the rear of the vessel and is visible over a 135-degree arc centered on the stern. That means it extends 67.5 degrees to each side of dead astern. So the light is visible from dead astern and sweeps 67.5° to port and 67.5° to starboard, giving a total coverage of 135° behind the vessel. In bearings, that’s from about 112.5° to 247.5°.

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