Question 32 UFV01 - Master - Uninspected Fishing Vessels

The Correct Answer is A. ### Why Option A ("not under command") is Correct The illustration D084RR (which depicts the lights commonly seen in navigation rules diagrams for this scenario) shows a vessel exhibiting **two all-round red lights**, displayed one vertically over the other. According to the International Regulations for Preventing Collisions at Sea (COLREGs), Rule 27(a) (Vessels Not Under Command or Restricted in Their Ability to Manoeuvre), a vessel **not under command (NUC)** must show: 1. **Two all-round red lights in a vertical line**, where they can best be seen. 2. When making way through the water, masthead lights, sidelights, and sternlight must also be shown. (If stopped, only the two red lights are mandatory at night.) Since the diagram depicts the defining characteristic—the two vertical all-round red lights—it describes a vessel that is **not under command**. ### Why Other Options Are Incorrect * **B) showing improper lights:** While this vessel might be showing improper lights if it were attempting to signal a different operation (like towing), the configuration shown (two vertical red lights) is the internationally and inland recognized signal for a specific legitimate status: "not under command." Therefore, the lights themselves are proper for the status they indicate. * **C) dredging:** A vessel engaged in dredging (or underwater operations, Restricted in Ability to Manoeuvre - RAM) typically shows: three all-round lights in a vertical line; **red-white-red**. The red lights indicate the obstructed side, and the white light indicates the safe side. The two vertical red lights shown here are specifically reserved for NUC. * **D) towing:** A power-driven vessel engaged in towing shows: **two** masthead lights in a vertical line (if the tow length is less than 200m) or **three** masthead lights in a vertical line (if the tow length is 200m or more), along with the standard sidelights and sternlight, and a towing light (yellow over the sternlight). The two all-round red lights are not part of the standard towing configuration.