BOTH INTERNATIONAL & INLAND You are making headway in fog and hear a fog signal of two prolonged blasts on your starboard quarter. Which action should you take?

Correct Answer: Option D — Hold your course and speed

Rule 19(e) states that a vessel which detects by radar alone the presence of another vessel shall determine if a close-quarters situation is developing. If so, it shall take avoiding action in ample time. However, if you hear a signal forward of your beam, you must reduce speed.