Question 948 Rules of the Road

The correct answer is A) Begin sounding one prolonged blast followed by two short blasts at two minute intervals. This is the correct answer because under the International and Inland Navigation Rules, when a vessel loses propulsion while underway in low visibility and sounding fog signals, it must indicate its situation by sounding the signal "one prolonged blast followed by two short blasts" at intervals of not more than two minutes. This signal indicates that the vessel is not under command and cannot maneuver as required by the rules. The other options are incorrect because they do not match the required signal for a vessel that has lost propulsion in low visibility conditions.