Question 18 FCP01 - First Class Pilot

The Correct Answer is A **Explanation for A (A vessel constrained by her draft):** According to the International Regulations for Preventing Collisions at Sea (COLREGs), Rule 28 (Vessels Constrained by their Draft), a power-driven vessel constrained by her draft *may* exhibit, in addition to the lights prescribed for a power-driven vessel underway, **three all-round red lights in a vertical line** where they can best be seen. These three vertical red lights are the unique signature of a vessel constrained by her draft. **Explanation for why other options are incorrect:** * **B) A vessel moored over a wreck:** A vessel moored over a wreck does not have a specific day signal or unique light signal for this purpose under COLREGs. If it is an obstruction, standard anchoring or other regulatory lights might apply, but not three vertical red lights specifically. * **C) A vessel aground:** A vessel aground displays the lights for a vessel at anchor (forward white all-round light, and/or stern white all-round light depending on length) **and** in addition, where they can best be seen, **two all-round red lights in a vertical line**. It displays two red lights, not three. (COLREGs Rule 30(d)). * **D) A vessel dredging:** A vessel engaged in dredging or underwater operations displays specific lights: three all-round lights in a vertical line, where they can best be seen. The top and bottom lights are red, and the middle light is white. Additionally, it shows two all-round red lights in a vertical line on the side where the obstruction exists, and two all-round green lights on the side where another vessel may pass. Since the question specifies three lights that are *all red*, this configuration does not match. (COLREGs Rule 27(d)).