After reporting a casualty to a mobile...

🔍 Key Concepts

• Casualty reporting requirements for Mobile Offshore Drilling Units (MODUs) under 46 CFR • What types of records directly relate to a vessel’s condition and loading at the time of an incident • Difference between routine maintenance logs and formal records required to be retained after an incident

💭 Think About

• Which of these records would help investigators understand how deep the unit or vessel was in the water and how it was loaded when the casualty occurred? • Which options are more about routine operations or maintenance, and which one is a formal record tied to safety and stability information? • If you were the Coast Guard investigator, which record would you first ask for to reconstruct the unit’s condition at the time of the casualty?

✅ Before You Answer

• Identify which choice is specifically tied to drafts, trim, and loading condition rather than repairs or equipment history • Eliminate options that are mainly for maintenance tracking and not incident reconstruction • Ask: which record is most likely required by regulation to be retained after a casualty report, because it documents the unit’s floating condition?

After reporting a casualty to a mobile offshore drilling unit, which record must be retained on board?

Hull reports

Record of drafts

Machinery repair book

Anchor record

🔍 Key Concepts

💭 Think About

✅ Before You Answer