The Master or person in charge of a MODU is required to submit a casualty report of an intentional grounding under what condition?

Correct Answer: Option A — If it creates a hazard to navigation

Under 46 CFR 109.411, a casualty report is required for any grounding that creates a hazard to navigation, the environment, or the safety of the vessel. Intentional groundings are not exempt if they pose such risks, necessitating formal notification to the Coast Guard.