INLAND ONLY Two power-driven vessels are crossing within a half a mile of each other as shown in illustration D042RR below. Vessel "A" sounds one short blast on the whistle, what does this signal mean?

Correct Answer: Option A — "I intend to leave you on my port side"

33 CFR 83.34(a) (Rule 34) dictates that in Inland waters, a one short blast signal signifies an intention to pass port-to-port. This signal is a proposal for the passing arrangement, and the vessel receiving the signal must respond with a corresponding one short blast to indicate agreement.