Question 957 Rules of the Road

The correct answer is D) One prolonged followed by two short blasts every 2 minutes. This is the correct fog signal for a 200-meter vessel restricted in her ability to maneuver and at anchor, as per the International Regulations for Preventing Collisions at Sea (COLREGS) Rule 35(f). The regulations specify that a vessel restricted in her ability to maneuver, while at anchor, must sound this distinctive fog signal to warn other vessels in the vicinity of her condition and limited maneuverability. The other options are incorrect because they do not match the specific signal required by the COLREGS for this situation. Option A describes a different signal, option B is for a bell and gong signal rather than the horn blasts, and option C calls for a different interval between the signals.