Question 12 ONC06 - Master LT 100 GRT

The Correct Answer is A **Explanation of Correct Option (A):** Option A, "take all way off, if necessary," is derived directly from Rule 19(d) of the International Regulations for Preventing Collisions at Sea (COLREGs), which applies in restricted visibility (fog). Rule 19(d) states: "A vessel which cannot avoid a close-quarters situation with a vessel forward of her beam... shall reduce her speed to the 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 the danger of collision is over." Hearing a fog signal of a vessel forward of the beam in restricted visibility indicates the potential for a close-quarters situation and mandates taking this specific action as a primary step to mitigate risk. **Explanation of Incorrect Options:** * **B) stop your engines:** While stopping the engines might be part of taking all way off (A), Rule 19 does not mandate this as the sole or primary required action. A vessel might need to keep her engines ready or occasionally engage them briefly to maintain steerageway or course, even while taking way off. The focus is on reducing speed to minimum or stopping the vessel's movement through the water, not simply turning off the engines. * **C) begin a radar plot:** While radar plotting is an essential and required action under Rule 19(b) for assessing risk when using radar in restricted visibility, Rule 19(d) (which addresses the specific situation of hearing a signal forward of the beam) requires an immediate action regarding speed reduction. Plotting is an assessment tool; taking all way off (A) is the mandated risk-mitigation maneuver in this scenario. * **D) All of the above:** Since B and C are not the sole or primary *required* actions in the way that A is mandated by Rule 19(d), this option is incorrect. Option A represents the specific, critical maneuver required by the regulation for this situation.