If an airplane circles a vessel 3 times, crosses the vessel's course close ahead while rocking the wings, and heads off in a certain direction, what does this indicate?

Correct Answer: Option C — Someone is in distress in that direction and the vessel should follow and assist.

Standard international aircraft vectoring signals for search and rescue specify that an aircraft circling a vessel three times, crossing ahead while rocking wings, and departing indicates someone is in distress in that direction requiring immediate assistance.