Question 45

The Correct Answer is B **Explanation for Option B (One prolonged blast) being correct:** According to both the International Regulations for Preventing Collisions at Sea (COLREGs, Rule 34(e)) and the Inland Navigational Rules (Inland Rule 34(f)), a vessel nearing a bend or an area where other vessels may be obscured by the intervening obstruction is required to sound a signal. This signal must be **one prolonged blast**. This sound serves as a warning signal to any vessel that may be on the other side of the obstruction, signifying the approach of a vessel. **Explanation of why other options are incorrect:** * **A) One short blast:** This signal is used to indicate a maneuver (e.g., "I intend to leave you on my port side when passing") when vessels are in sight of one another. It is not the signal used for approaching a blind bend. * **C) Two short blasts:** This signal is used to indicate a different maneuver (e.g., "I intend to leave you on my starboard side when passing") when vessels are in sight of one another. It is not the required signal for a blind bend. * **D) One long blast:** While the term "prolonged blast" often feels similar to "long blast" in common speech, in the context of marine rules, the standardized term for the bend warning signal is **one prolonged blast**. Furthermore, "long blast" is not a defined sound signal in COLREGs or Inland Rules for maneuvering or warning purposes. (Note: A prolonged blast is specifically defined as a blast of 4 to 6 seconds duration.)