Question 36 ONC04 - Mate of LT 500-1600 GRT

The Correct Answer is A. **Explanation for Option A (Correct Answer):** According to the U.S. Inland Navigational Rules (Inland Only), when operating on inland waters in a narrow channel, the vessel being overtaken must respond to the overtaking vessel's proposal. The overtaking vessel signaled its intention to pass on the starboard side (two short blasts). The signal of agreement or assent by the overtaken vessel is **one short blast**. This signal indicates to the overtaking vessel that the proposal is accepted and that the overtaken vessel understands and agrees to cooperate in the maneuver. (Rule 34(c)(i)). **Explanation for Incorrect Options:** * **B) one prolonged, one short, one prolonged, and one short blast in that order:** This sequence is the danger or *doubt* signal (five or more short rapid blasts) preceded and followed by a prolonged blast, which is not a standard response under the Rules. The standard signal indicating doubt or disagreement is five or more short rapid blasts. This option is incorrect as an agreement signal. * **C) two prolonged blasts:** This signal is typically used for a vessel leaving a slip or berth (a warning signal) or as a preparatory signal when meeting, but it is not the signal of agreement for an overtaking maneuver. * **D) two prolonged followed by two short blasts:** This sequence is not a prescribed signal for agreeing to an overtaking maneuver under the Inland Rules. It doesn't correspond to any standard agreement or disagreement signal for this scenario.