Question 1 RVR01 - Master of Unlimited Tonnage

The Correct Answer is B **Explanation of Option B (Correct):** Option B, "take all way off, if necessary," is the action required by the **Rules of the Road (COLREGs)** when a vessel hears the fog signal of another vessel forward of the beam and risk of collision may exist. Rule 19(e) (Conduct of Vessels in Restricted Visibility) specifically states: > "Except where it has been determined that a risk of collision does not exist, every vessel which hears apparently forward of her beam the fog signal of another vessel, or which cannot avoid a close-quarters situation with another vessel forward of her beam, shall reduce her speed to a minimum at which she can be kept on her course. **She shall if necessary take all her way off** and in any event navigate with extreme caution until danger of collision is over." Therefore, taking all way off is the definitive action mandated by the Rules under these circumstances. **Explanation of Other Options (Incorrect):** * **A) stop your engines:** While reducing speed to a minimum (or taking all way off) often involves stopping the engines, merely stopping the engines does not guarantee taking all way off (the vessel may still coast). More importantly, the required action in the Rule is to reduce speed/take all way off, not strictly to stop the engines. This is a means to an end, not the primary rule requirement. * **C) begin a radar plot:** Radar plotting is a prudent navigational practice when operating in restricted visibility and detecting targets, but it is a tool for assessment, not the immediate *required action* mandated by Rule 19(e) when a dangerous signal is heard forward of the beam. The immediate requirement under the Rule is speed reduction/taking all way off. * **D) All of the above:** Since options A and C are not the primary, mandated action under Rule 19(e), this option is incorrect.