In examinations involving box-shaped vessels, what is the maximum precision for KG, KM, and GM?

The maximum precision for calculations involving KG (the height of the center of gravity above the keel), KM (the height of the metacenter above the keel), and GM (the distance between the center of gravity and the metacenter) in box-shaped vessels is typically three decimal places. This level of precision is crucial because these values significantly influence the stability calculations and behavior of the vessel in various loading conditions and operational scenarios.

Using three decimal places allows for enhanced accuracy in stability assessments, ensuring that even small variations in the metacentric height (GM) are adequately accounted for. This is particularly important in stability calculations to ensure compliance with safety standards and operational guidelines. Therefore, the choice that indicates three decimal places reflects a standard practice in naval architecture and marine engineering when handling stability measurements for box-shaped vessels.