Question 9 MODU02 - Barge Supervisor

The Correct Answer is D **Explanation for Option D (Both vessels alter course to starboard):** Option D is correct based on Rule 14 (Head-on situation) of the International Regulations for Preventing Collisions at Sea (COLREGs), which applies to both International and Inland waters (where applicable rules are adopted). Rule 14(a) states: "When two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision each shall alter her course to starboard so that each may pass on the port side of the other." This established, predictable maneuver ensures both vessels take clear, unambiguous avoiding action, thereby mitigating the risk of collision. **Explanation of Incorrect Options:** **A) Sound at least five short and rapid blasts:** This signal (at least five short and rapid blasts) is the danger or doubt signal (Rule 34(d)). It is used to express doubt or disagreement regarding the intentions of the other vessel, or that insufficient action is being taken. It is a warning signal, not the required avoiding action itself in a head-on situation. **B) Back down:** While reducing speed or stopping is often prudent, immediately backing down (reversing engines) is not the specific, required maneuver for a head-on meeting under Rule 14. Rule 14 specifically mandates altering course to starboard to pass port-to-port. Reversing engines in close proximity can sometimes complicate the situation. **C) Both vessels shall stop their engines:** Rule 8 (Action to avoid collision) emphasizes that action taken must be positive and ample, and typically involves reducing speed or stopping when necessary. However, the *required* action for a head-on situation is explicitly defined as altering course to starboard (Rule 14), not merely stopping the engines. Stopping engines without altering course may not resolve the collision risk.