Which vessel shall NOT impede the passage of a vessel which can safely navigate only within a narrow channel or fairway?

The correct answer indicates that sailing vessels shall not impede the passage of a vessel that can only navigate safely within a narrow channel or fairway. This aligns with International and Inland Navigation Rules which emphasize that certain vessels have a duty to keep clear of those that are constrained by their drafts or navigational limitations.

In a narrow channel or fairway, vessels that have restrictions on their ability to maneuver, such as a deep-draft vessel, must be given the right of way. Other vessels, particularly those that can maneuver more easily, should avoid obstructing their passage. While sailing vessels generally have the ability to maneuver, they are often less capable in restricted waters compared to power-driven vessels, which can adjust speed and direction more quickly.

Additionally, fishing vessels and large tugs typically have specific regulations regarding their navigation in narrow channels, but the emphasis here is on sailing vessels allowing safe passage for those constrained by draft. Thus, recognizing the unique navigational needs of vessels operating in confined spaces is crucial for maritime safety and compliance with the Rules of the Road.