You are putting together a list of Class required work for a vessel's next special survey. Which of the following items would be required by Class?

Correct Answer: Option C — Hull thickness measurements.

Hull thickness measurements are a mandatory requirement for Special Surveys conducted by classification societies. These measurements assess the structural integrity of the vessel's plating and framing, ensuring that corrosion or wear has not reduced the hull strength below the minimum allowable limits defined by the vessel's class and design standards.