Question 10 GLI04 - Mate of LT 500-1600 GRT

The Correct Answer is B **Explanation for Option B (Correct):** This scenario is governed by the International Regulations for Preventing Collisions at Sea (COLREGs), specifically Rule 13 (Overtaking) and Rule 17 (Action by Stand-on Vessel). 1. **Overtaking Situation (Rule 13):** Vessel "A" is the overtaking vessel (the give-way vessel), and vessel "B" is the vessel being overtaken (the stand-on vessel). Rule 13 states that any vessel overtaking any other vessel shall keep out of the way of the vessel being overtaken. This assigns the duty to maneuver entirely to Vessel A. 2. **Stand-on Vessel Duties (Rule 17):** Vessel "B", being the stand-on vessel, is required by Rule 17(a)(i) to **keep her course and speed**. This action ensures predictability for the give-way vessel (Vessel A) trying to execute the maneuver safely. Therefore, Vessel B must hold her course and speed. **Explanation of Incorrect Options:** * **A) should slow down until vessel "A" has passed:** This is incorrect. Changing speed (slowing down) would make Vessel B the give-way vessel, confusing the situation and violating her stand-on duty to maintain predictable movement. * **C) may steer various courses and vessel "A" must keep clear:** This is incorrect. While Vessel A must keep clear, Vessel B is obligated under Rule 17(a)(i) to maintain a steady course and speed. Varying courses would make it impossible for Vessel A to predict her movements and safely pass. * **D) should change course to the right:** This is incorrect. Vessel B is the stand-on vessel and is not required or advised to alter course. Altering course would violate the rule requiring her to maintain course and speed. (Stand-on vessels may only take action if collision cannot be avoided by the give-way vessel's action alone, which is not the primary requirement here.)