Question 36 MODU02 - Barge Supervisor

The Correct Answer is A. **Explanation for Option A (Correct Answer):** According to the U.S. Inland Navigational Rules (specifically Rule 34(c) regarding maneuvering and warning signals), when an overtaking power-driven vessel proposes to pass on the overtaken vessel's starboard side (indicated by the overtaking vessel sounding **one short blast**), the overtaken vessel must indicate its agreement. The signal of agreement for a proposed starboard-side passage is **one short blast**. This signal confirms that the overtaken vessel understands the maneuver and agrees to cooperate. --- **Explanation for Incorrect Options:** * **B) one prolonged, one short, one prolonged, and one short blast in that order:** This signal (the Danger or Doubt Signal, also known as the General Prudential Signal) is defined in Annex V of the Inland Rules. It is used to signal vessels operating in close proximity that there is doubt about the other vessel's intentions or movements, or when the vessels are approaching each other and there is a potential collision hazard. It is not the signal for agreeing to an overtaking maneuver. * **C) two prolonged blasts:** This is not a standard maneuvering or warning signal under the Inland Rules. Prolonged blasts are used primarily as the required signal when leaving a dock or berth (Rule 34(g)) or as the mandatory whistle signal in conditions of restricted visibility (Rule 35). * **D) two prolonged followed by two short blasts:** This signal is the required **'do not pass/over' or 'obstruction'** signal (Rule 34(c)(ii)) given by the overtaken vessel if it disagrees with the overtaking vessel's proposal or if passage is unsafe. If the overtaken vessel sounded this signal, it would be refusing the request, not agreeing to it.