Which signal indicates a pilot ahead?

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Multiple Choice

Which signal indicates a pilot ahead?

Explanation:
In signaling, two vertically stacked lights use color combinations to indicate specific pilotage status. The white light on top with a red light below is the standard indication that a harbor pilot is aboard or about to board and will guide your vessel. Seeing this signal means a pilot is ahead and you should prepare to follow the pilot’s instructions. The other options don’t match the pilot-ahead designation: green over white, red over white, or three greens on a yardarm are not the recognized two-light pilot signals, so they don’t convey that a pilot is present.

In signaling, two vertically stacked lights use color combinations to indicate specific pilotage status. The white light on top with a red light below is the standard indication that a harbor pilot is aboard or about to board and will guide your vessel. Seeing this signal means a pilot is ahead and you should prepare to follow the pilot’s instructions.

The other options don’t match the pilot-ahead designation: green over white, red over white, or three greens on a yardarm are not the recognized two-light pilot signals, so they don’t convey that a pilot is present.

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