Until a change to lightweight has been approved, the weights and center of gravity locations for the changes to lightweight shown in the permanent record for the Deep Driller are treated as __________.

Correct Answer: Option C — variable load

Until a formal inclining experiment or deadweight survey is conducted and approved to update the lightweight, any changes in weight or center of gravity are treated as variable loads. This conservative approach ensures that stability calculations remain accurate and that the unit's operating envelope is not compromised by undocumented weight.