Question 5

The Correct Answer is B **Explanation for Option B (Correct Answer):** Option B, "Two white lights in a vertical line," is the correct signal. Under the Inland Navigation Rules (specifically Rule 26(d)), a vessel engaged in trawling is permitted to display two white lights in a vertical line instead of the usual green light over a white light (lights for a vessel engaged in fishing) when operating in **close proximity to other fishing vessels**. This alternative signal is unique to trawlers under Inland Rules when operating near other fishing vessels, differentiating their operation from general fishing vessels which display green over white. **Explanation of Incorrect Options:** * **A) A red light over a white light in a vertical line:** This combination (Red over White) signifies a vessel **not under command** (Rule 27(a)). It is not the signal for a vessel trawling, regardless of proximity to other fishing vessels. * **C) Two fixed yellow lights in a vertical line:** This signal is designated for a vessel engaged in **towing** when the tow exceeds 200 meters in length (Rule 24(a)(ii)), or for pushing/towing alongside, or pushing ahead when the length of the tow is 200 meters or less (Rule 24(c)). It is not used for trawling. * **D) All of the above:** Since options A and C are incorrect, this option cannot be correct.