BOTH INTERNATIONAL & INLAND By definition which vessel is unable to keep out of the way of another vessel?

Correct Answer: Option C — Vessel restricted in her ability to maneuver

Rule 3(g) explicitly defines a "vessel restricted in her ability to maneuver" as a vessel which, from the nature of her work, is restricted in her ability to maneuver as required by the Rules and is therefore unable to keep out of the way of another vessel.