Question 11
AB01Which is TRUE of a nun buoy in the IALA Region B system of buoyage?
AI Explanation
The Correct Answer is D
**Why option D ("It will have an even number") is correct:**
In the IALA Region B (Americas, Japan, Philippines, etc.) lateral system of buoyage, when proceeding in the conventional direction (entering from seaward), **nun buoys** mark the starboard (right) side of the channel. Buoys marking the starboard side are assigned consecutive **even numbers** (2, 4, 6, etc.).
**Why the other options are incorrect:**
* **A) It will be green in color:** In IALA Region B, buoys marking the starboard (right) side of the channel (nun buoys) are colored **red**, not green. Green buoys mark the port (left) side.
* **B) It will be cylindrical in shape:** Nun buoys are characteristic of the starboard side and are **conical** (tapering to a point at the top) in shape. Cylindrical buoys (can buoys) mark the port side.
* **C) It will be left to port when entering from seaward:** A nun buoy marks the **starboard** (right) side of the channel when entering from seaward. Therefore, it must be kept to your *starboard* (right) side, not your port (left) side.
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