You are proceeding up a channel in Chesapeake Bay and are meeting an outbound vessel. There is no current. You MUST propose or answer one- or two-blast whistle signals given by the other vessel if passing within 1/2 mile.

• A. Propose or answer one- or two-blast signals.
• B. Ignore any signals.
• C. Sound three long blasts.
• D. Only respond with five blasts.

Answer: (B)

In a meeting situation in a narrow channel, you coordinate which side to pass by using short whistle signals. The idea is to clearly indicate your intended passing side so both vessels can maneuver safely.

One short blast means you intend to pass on the other vessel’s starboard side, while two short blasts mean you intend to pass on the port side. If you’re approaching an outbound vessel within half a mile, you should propose one- or two-blast signals to establish the passing arrangement or respond to the other vessel’s signal with the corresponding one- or two-blast reply. This exchange avoids confusion and keeps both ships clear of collision risks.

Ignoring signals or using signals that don’t convey passing intent isn’t appropriate in this scenario. The three long blasts or five blasts do not apply to coordinating a passing arrangement between two vessels.