INTERNATIONAL ONLY Which vessel shall avoid impeding the safe passage of a vessel constrained by her draft?

Correct Answer: Option A — A sailing vessel

COLREG Rule 18(d) mandates that any vessel, unless not under command or restricted in her ability to maneuver, must avoid impeding the safe passage of a vessel constrained by her draft. A sailing vessel does not have priority over a vessel constrained by her draft under these rules.