Question 10 GLI02 - Mate of Unlimited Tonnage

The Correct Answer is B **Explanation for B (Correct Answer):** The scenario described—Vessel "A" (the overtaking vessel) overtaking Vessel "B" (the vessel being overtaken)—is governed by Rule 13 (Overtaking) of the International Regulations for Preventing Collisions at Sea (COLREGs), which applies to both International and Inland waters (as indicated in the question). Rule 13(d) states: "Any subsequent alteration of the bearing between the two vessels shall not make the overtaking vessel a crossing vessel within the meaning of these Rules or relieve her of the duty of keeping clear until she is finally past and clear." Crucially, the vessel being overtaken (Vessel "B") is the **stand-on vessel** in this specific encounter type. Rule 17 (Action by Stand-on Vessel) dictates the duties of the stand-on vessel. Rule 17(a)(i) requires the stand-on vessel to **keep her course and speed**. Therefore, Vessel "B" should maintain her course and speed so that Vessel "A" (the give-way vessel) can safely execute the maneuver of keeping clear. **Explanation of Incorrect Options:** * **A) should slow down until vessel "A" has passed:** This is incorrect. Vessel "B" is the stand-on vessel and is required to maintain her speed (Rule 17(a)(i)). Slowing down introduces unpredictability and complicates the calculations for the overtaking vessel ("A"). * **C) may steer various courses and vessel "A" must keep clear:** This is incorrect. Vessel "B" must hold her course (Rule 17(a)(i)). Changing course arbitrarily (steering various courses) would violate her duty as the stand-on vessel and directly undermine the required action of the overtaking vessel ("A"). * **D) should change course to the right:** This is incorrect. Changing course is an action reserved primarily for the give-way vessel ("A") or a stand-on vessel taking action under Rule 17(b) or 17(c) to avoid immediate danger. As the stand-on vessel, the primary duty is to maintain course and speed.