Question 34 RVR03 - Mate of LT 500-1600 GRT

The Correct Answer is C **Explanation for C (Correct Option):** Option C, "Sound a whistle blast of 4 to 6 seconds duration," is correct because it directly complies with Rule 34(e) of both the International Regulations for Preventing Collisions at Sea (COLREGs) and the Inland Rules. Rule 34(e) governs signals used when approaching a bend or an area of a channel or fairway where vessels approaching from the opposite direction cannot be seen. The rule specifically mandates that a vessel nearing such an area shall sound **one prolonged blast** (a prolonged blast is defined in Rule 32 as a blast of approximately 4 to 6 seconds duration). This signal warns unseen traffic that a vessel is approaching the blind spot. **Explanation for A (Incorrect Option):** Option A, "Stay in the middle of the channel," is incorrect. While maintaining position is important, the requirement when approaching a blind bend is to give a warning signal. Furthermore, Rule 9 (Narrow Channels) typically requires vessels to keep as near to the outer limit of the channel which lies on their **starboard side** as is safe and practicable, not necessarily the middle. Staying in the middle might impede traffic following the proper trackline or be dangerous if another vessel is following the rule and hugging the bank. **Explanation for B (Incorrect Option):** Option B, "Stop engines and navigate with caution," is incorrect. While navigating with caution is always required (Rule 5 and 6), stopping engines is not the specified or primary action required by the Rules for approaching a bend. The Rule requires a specific warning signal (the prolonged blast) to be sounded first, allowing the vessel to proceed cautiously while giving notice of its presence. Stopping the vessel prematurely or unnecessarily can sometimes create its own hazard. **Explanation for D (Incorrect Option):** Option D, "Sound passing signals to any other vessel that may be on the other side of the bend," is incorrect. Passing signals (one or two short blasts) are used in Inland Waters (Rule 34(a)) *after* the presence and intentions of another vessel have been ascertained and an agreement to pass has been initiated. When approaching a blind bend, the vessel does *not* know if another vessel is present or what its intentions are. The required signal is the **warning signal** (prolonged blast), not a specific passing/maneuvering signal.