Question 36 MODU01 - Offshore Installation Manager

The Correct Answer is A. ### Why Option A ("one short blast") is correct Option A, **one short blast**, is the correct signal for a vessel being overtaken to agree to the overtaking vessel's proposal to pass on the starboard side, specifically under the Inland Rules (as the question specifies "INLAND ONLY"). * Under Inland Rule 34(c), when a power-driven vessel is being overtaken, and the overtaking vessel sounds the signal indicating intent to pass (in this case, one short blast for passing on the starboard side), the vessel being overtaken **must** indicate agreement or disagreement. * The signal of **agreement** by the vessel being overtaken is to sound the same signal given by the overtaking vessel: **one short blast** if the maneuver is to port/starboard (meaning the overtaking vessel passes the other's starboard side). * *Note on the overtaking vessel's signal:* The question states the overtaking vessel sounds the signal indicating intent to pass on the starboard side. Under Inland Rules, this intention signal is **one short blast**. Therefore, the vessel being overtaken agrees by repeating that signal: one short blast. ### Why the other options are incorrect * **B) one prolonged, one short, one prolonged, and one short blast in that order:** This is the Restricted Visibility signal used to designate a vessel constrained by its draft (a signal only permitted under International Rules, not Inland Rules). It has no relation to agreeing to an overtaking maneuver. * **C) two prolonged blasts:** Two prolonged blasts are used as a preparatory or warning signal (e.g., when approaching a blind bend or leaving a dock/berth). It is not the signal of agreement for an Inland overtaking maneuver. * **D) two prolonged followed by two short blasts:** This sequence is the danger or disagreement signal under the International Rules. While Inland Rules require five or more short blasts for disagreement (Inland Rule 34(a)(ii)), two prolonged followed by two short blasts is definitively not the signal of agreement for passing.