BOTH INTERNATIONAL & INLAND Which of the following describes a vessel exhibiting the lights shown in illustration D056RR below?

Correct Answer: Option A — underway and laying submarine cable

Rule 27(b) prescribes the lights for a vessel restricted in her ability to maneuver, which includes a vessel engaged in laying or picking up a submarine cable. The red-white-red vertical light configuration signals that the vessel is restricted in its ability to deviate from its intended track.