INLAND ONLY Two power-driven vessels are meeting in the situation as shown in illustration D037RR below. What does one short blast from either vessel mean?

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

Inland Rule 34(a) defines one short blast as an intention to leave the other vessel on the port side. This signal is used when two power-driven vessels are meeting and intend to pass port-to-port, which is the standard passing arrangement under the Inland Navigation Rules.