You are heading due east (090°T) and observe a vessel's red sidelight on your port beam. The vessel may be heading ________.

Study for the Maritime Navigation Rules and Vessel Responsibilities Exam. Study with multiple choice questions including hints and explanations. Prepare effectively for your exam with us!

Multiple Choice

You are heading due east (090°T) and observe a vessel's red sidelight on your port beam. The vessel may be heading ________.

Explanation:
The red sidelight is fixed on the port (left) side of a vessel. If you see that red light on your port beam, it means you are located roughly along that vessel’s left side as it passes, so the other vessel’s port side is directed toward you. With you heading due east, the geometry that places the other vessel’s port side toward you corresponds to a course toward the southwest. The other headings would not align its left-hand light with your left-side view, so they don’t fit the situation. Therefore the vessel may be heading southwest.

The red sidelight is fixed on the port (left) side of a vessel. If you see that red light on your port beam, it means you are located roughly along that vessel’s left side as it passes, so the other vessel’s port side is directed toward you. With you heading due east, the geometry that places the other vessel’s port side toward you corresponds to a course toward the southwest. The other headings would not align its left-hand light with your left-side view, so they don’t fit the situation. Therefore the vessel may be heading southwest.

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