BOTH INTERNATIONAL & INLAND Your vessel is underway in reduced visibility. You hear the fog signal of another vessel about 30° on your starboard bow. If danger of collision exists, you must __________.

Correct Answer: Option B — reduce your speed to bare steerageway

Rule 19(e) requires reducing speed to bare steerageway when detecting another vessel forward of the beam in restricted visibility, unless a risk of collision has been averted, ensuring maximum reaction time and maneuverability.