Question 18 RVR04 - Master or Mate of LT 200 GRT

The Correct Answer is A **Explanation for Option A (One prolonged blast):** The correct sound signal required for a vessel nearing a bend or an area where other vessels may be obscured is **one prolonged blast** (a blast lasting 4 to 6 seconds). This signal is specified under both the International Regulations for Preventing Collisions at Sea (COLREGs, Rule 34(e)) and the U.S. Inland Rules. It serves as a warning and an indication of the vessel's presence to other traffic that may be hidden from view. **Why the other options are incorrect:** * **B) Two short blasts:** This signal indicates "I am altering my course to port" (when operating in sight of another vessel and required by COLREGs/Inland Rules). It is not the signal for approaching a blind bend. * **C) One short blast:** This signal indicates "I am altering my course to starboard" (when operating in sight of another vessel and required by COLREGs/Inland Rules). It is not the signal for approaching a blind bend. * **D) One long blast:** While the term "long" is sometimes used colloquially, the official terminology for the required signal is "prolonged" (4–6 seconds). The term "long blast" is not the standard regulatory term and can be confused with other signals (like the signal for restricted visibility, which is also a prolonged blast, but required at specific intervals). However, since the question requires the correct action for a bend, and "prolonged blast" is the specific regulatory signal, A is the precise answer.