Question 35 ONC05 - Master or Mate of LT 200 GRT

The Correct Answer is A **Explanation for A (one prolonged blast):** The Inland Navigational Rules (33 CFR Subchapter E, specifically Rule 34(g)) govern the maneuvering and warning signals used by vessels operating on U.S. inland waters. Rule 34(g) states that a power-driven vessel leaving a dock or berth shall sound **one prolonged blast**. This signal serves as a warning to any approaching vessels that the vessel is underway and leaving a restricted maneuvering area. **Why the other options are incorrect:** * **B) four short blasts:** Four short blasts is not a standard maneuvering or warning signal prescribed by the Rules for leaving a dock or berth. A signal of five or more short blasts is generally used as a "danger" or "doubt" signal. * **C) one long blast:** While Rule 32 defines a "prolonged blast" as lasting 4 to 6 seconds, and Rule 34(g) requires a "prolonged blast," the term "long blast" is not the standard regulatory terminology used in the Inland Rules for this specific maneuver. Furthermore, a single "long blast" is commonly misunderstood or used non-specifically; using the precise regulatory term "prolonged blast" (Option A) is the most accurate answer. * **D) no signal is required:** This is incorrect. The Inland Rules explicitly mandate the use of one prolonged blast for this maneuver to ensure safety and provide warning in restricted waters.