Question 19

The Correct Answer is B **Explanation of Option B (Correct Action):** Option B, "take all way off, if necessary," is the correct and mandatory action according to Rule 19(e) of the International Regulations for Preventing Collisions at Sea (COLREGs), which governs the conduct of vessels in restricted visibility. Rule 19(e) states that every vessel which hears the fog signal of another vessel apparently forward of her beam, and where risk of collision may exist or is undetermined, "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, the requirement to stop the vessel's forward movement (taking all way off) is a direct legal mandate when the conditions are met. *** **Explanation of Other Options (Incorrect Actions):** * **A) stop your engines:** While stopping the engines is often the method used to take all way off, the primary regulatory requirement specified in Rule 19(e) is focused on speed reduction and removing all *way* (momentum). Simply stopping the engines may not immediately take all way off if the vessel has significant momentum, and thus B represents the complete mandatory requirement. * **C) begin a radar plot:** Rule 19(d) requires vessels using radar to determine if a risk of collision exists. Beginning a radar plot is good seamanship and aids in this determination, but the specific immediate action mandated by Rule 19(e) upon **hearing** a fog signal forward of the beam is the drastic reduction of speed/taking all way off, regardless of whether a plot has been started. The rule requires a change in speed/movement, not just a navigational action. * **D) All of the above:** Since options A and C are not the primary, complete, or required action specified under the relevant rule (Rule 19(e)) in this scenario, D is incorrect.