INLAND ONLY You are meeting another vessel in inland waters, and she sounds one short blast on the whistle. What does this signal mean?

Correct Answer: Option C — the vessel intends to leave you on her port side

33 CFR 83.34(a) defines the one short blast signal as an indication that a vessel is altering its course to starboard. In a meeting situation, this signal communicates the vessel's intent to leave the other vessel on its port side, consistent with standard passing procedures.