Question 17 MODU02 - Barge Supervisor

The Correct Answer is B **Explanation for B (Sidelights and a stern light):** The lighting requirements for vessels being towed are governed by Rule 24(f) of the International Regulations for Preventing Collisions at Sea (COLREGs). Rule 24(f) states: "A vessel or object being towed, other than those mentioned in paragraph (g) of this Rule, shall exhibit sidelights and a stern light and, if the length of the tow exceeds 200 metres, in addition, a diamond shape where it can best be seen." This rule applies universally to vessels being towed, regardless of whether they are towed astern or alongside. Therefore, a single vessel being towed alongside must show the same lights as a normal power-driven vessel of her length at night: sidelights and a stern light. **Why other options are incorrect:** **A) One all-round white light:** This lighting configuration is typically reserved for small vessels (less than 7 metres in length, maximum speed 7 knots) under Rule 23(d)(ii) or for anchored vessels (Rule 30(a)). It does not apply to a vessel being towed. **C) A masthead light, sidelights, and a stern light:** This is the standard lighting configuration for a power-driven vessel underway (Rule 23(a)(i) and (ii)). A vessel being towed alongside is not considered "underway" in the sense of using its own propulsion and therefore does not show masthead lights, as this would falsely indicate it is a power-driven vessel. **D) Only the outboard sidelight and a stern light:** While there are specific rules for barges or objects being pushed ahead or towed alongside in *inland* waters (e.g., US Inland Rules), the *International* Rules (COLREGs) make no distinction regarding which sidelight is shown for a vessel being towed alongside. The vessel being towed must show **both** sidelights and a stern light (Rule 24(f)).