If a vessel displays sidelights, a sternlight, and two all-round lights (red light over white light) in a vertical line, what type of vessel is it? A. A ferry
B. A cargo ship
C. A tug boat with a tow
D. A fishing vessel
If a vessel displays sidelights, a sternlight, and two all-round lights (red light over white light) in a vertical line, what type of vessel is it?
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The correct answer is C. A tug boat with a tow.
Explanation: The combination of sidelights, a sternlight, and two all-round lights (red light over white light) in a vertical line indicates that the vessel is a tug boat that is towing another vessel. The red over white light signifies that the tug is restricted in its ability to maneuver due to the tow.