A vessel at anchor will show a

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Multiple Choice

A vessel at anchor will show a

Explanation:
When a vessel is at anchor, it must show an all-round white light. This light is visible in every direction and signals to other ships that the vessel is stationary and anchored, not underway. The red and green navigation lights are used when a vessel is moving, so they don’t indicate an anchored state. A blue light or a flashing green light have other, specific meanings and aren’t used to mark an anchored vessel. If it’s daytime, an anchored vessel also uses a day signal of a black ball to indicate anchorage.

When a vessel is at anchor, it must show an all-round white light. This light is visible in every direction and signals to other ships that the vessel is stationary and anchored, not underway. The red and green navigation lights are used when a vessel is moving, so they don’t indicate an anchored state. A blue light or a flashing green light have other, specific meanings and aren’t used to mark an anchored vessel. If it’s daytime, an anchored vessel also uses a day signal of a black ball to indicate anchorage.

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