BOTH INTERNATIONAL & INLAND Vessel "A" is overtaking vessel "B" as shown in illustration D009RR below. Which vessel is the stand-on vessel?

Correct Answer: Option C — Vessel "B"

Rule 13 defines an overtaking situation as one where a vessel approaches another from more than 22.5 degrees abaft the beam. The vessel being overtaken is the stand-on vessel and must maintain its course and speed, while the overtaking vessel is the give-way vessel and must keep clear.