Question 9 ONC06 - Master LT 100 GRT

The Correct Answer is D **Explanation for D (Both vessels alter course to starboard):** Option D is correct because it directly follows Rule 14 (Head-on situation) of the International Regulations for Preventing Collisions at Sea (COLREGs), which applies to both International and Inland waters (where specific inland rules do not override the international rule). 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 ensures predictable and safe passing maneuvers. **Explanation for why other options are incorrect:** * **A) Sound at least five short and rapid blasts:** This signal (the danger or doubt signal) indicates that the vessel is in doubt about the other vessel's intentions or actions, or believes immediate danger exists. While it might be sounded *in addition* to taking action, it is not the required primary action for a head-on meeting situation; the required action is altering course to starboard. * **B) Back down:** Backing down (reversing the engines) is a drastic action used to take off way or stop the vessel. While reducing speed or stopping may be necessary under Rule 8 (Action to avoid collision), it is generally required that course changes be large enough to be readily apparent, and the primary maneuver for a head-on situation is the mutual alteration of course to starboard (Rule 14). * **C) Both vessels shall stop their engines:** While reducing speed is encouraged, stopping the engines entirely might leave the vessel without steerageway or maneuverability, which could exacerbate the danger. Rule 19 (Conduct of vessels in restricted visibility) requires stopping engines in certain circumstances, but for a clear-weather head-on meeting, the required action is taking positive action by altering course to starboard.