BOTH INTERNATIONAL & INLAND A light signal consisting of three flashes means __________.
Official USCG Answer & Rule Citation
Correct Answer: Option B — "I am operating astern propulsion"
Under Inland Navigation Rules, for the condition where 'A light signal consisting of three flashes means', the correct requirement is: '"I am operating astern propulsion"'. This standard ensures clear navigational intent and collision avoidance.
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