Question 9 GLI04 - Mate of LT 500-1600 GRT

The Correct Answer is D **Explanation for D (Both vessels alter course to starboard):** Option D is correct because it directly states the requirement found in Rule 14 (Head-on situation) of the International Regulations for Preventing Collisions at Sea (COLREGs) and the corresponding Inland Rules. This rule applies when two power-driven vessels are meeting on reciprocal or nearly reciprocal courses and there is a risk of collision. Rule 14(a) mandates that: "Each shall alter her course to starboard so that each shall pass on the port side of the other." This action ensures predictable, unambiguous passing maneuvers, reducing the risk of collision. **Explanation for why other options are incorrect:** * **A) Sound at least five short and rapid blasts:** This signal (the danger/doubt signal) is used when a vessel doubts the intentions of the other vessel or is unsure whether sufficient action is being taken to avoid collision. While this signal *might* be used if the expected starboard turn is not executed, it is **not** the *required action* to solve the head-on situation itself. The required action is the course change. * **B) Back down:** Backing down (reversing the engine) is a drastic action used to take the way off a vessel quickly. While stopping or reversing engines might be necessary under Rule 8(e) (Slacken speed or stop engines to avoid collision), it is secondary to the required course alteration under Rule 14. Rule 14 requires a positive change of direction (starboard turn), not just slowing down. * **C) Both vessels shall stop their engines:** Stopping engines helps reduce speed, but like backing down (Option B), it is a reaction to speed, not the primary required maneuver for a head-on situation. Rule 14 requires a course alteration to starboard to establish a safe passing arrangement.