Question 18

The Correct Answer is B. **Why option B ("fishing vessel") is correct:** The illustration D070RR depicts a vessel displaying a masthead light (white), sidelights (red and green), and a specific combination of vertical lights: an upper light that is green over a lower light that is white. This combination—green over white—is the internationally and inland recognized signal for a vessel engaged in **trawling**. A trawling vessel is a specific type of **fishing vessel**. When a vessel is engaged in fishing, it must display the lights appropriate for that operation, regardless of whether it is an under-12m motorboat or a large trawler. Therefore, the lights shown specifically identify a vessel that is fishing (specifically trawling). **Why each of the other options is incorrect:** * **A) sailboat:** A sailboat (when under sail and not using propulsion) typically displays only sidelights and a stern light, or combined lantern. It does not display the green-over-white fishing lights. * **C) pilot boat:** A pilot boat displays two vertical lights (white over red) when engaged in pilot duties, which signifies "Pilot required on board." It does not display the green-over-white fishing lights. * **D) motorboat:** A standard motorboat (power-driven vessel) displays a masthead light, sidelights, and a stern light. While a motorboat could be a fishing vessel, the term "motorboat" alone is too general. A motorboat that is *not* engaged in fishing would not display the green-over-white operational lights. The lights shown specifically indicate the operational status of "fishing/trawling," not just "power-driven."