Final Answer:
This is a crossing situation. Option 3 is the answer.
Step-by-step explanation:
In maritime navigation, the lights displayed by a vessel provide information about its status and the type of situation it is involved in. In the given scenario, where a vessel is displaying lights as indicated in the question, it represents a crossing situation. In a crossing situation, two vessels are on a course that would involve crossing paths but not necessarily head-on. The lights displayed help mariners determine the actions they need to take to avoid a collision.
Therefore, the correct answer is option 3, indicating a crossing situation.