Coast Guard Exams
Question 498Rules of the Road90% to pass

BOTH INTERNATIONAL & INLAND Your vessel enters fog. You stop your engines, and the vessel is dead in the water. Which fog signal should you sound?

AI Explanation
The correct answer is D) Two prolonged blasts every two minutes. According to the International Regulations for Preventing Collisions at Sea (COLREGS) and the Inland Navigation Rules, a vessel that is not under command, which includes a vessel that is dead in the water, must sound the fog signal of "two prolonged blasts every two minutes" to indicate its status to other vessels in the area. The other answer choices are incorrect because they do not match the specific fog signal required for a vessel that is not under command. A, B, and C describe different fog signals that are used for other vessel situations, such as a vessel making way through the water or a vessel restricted in its ability to maneuver.

Ready to test your knowledge?