Question 3708 Deck General

The correct answer is A) Personnel list. After a report of casualty to a mobile offshore drilling unit, the personnel list must be retained on board. This is a requirement under Coast Guard regulations, as the personnel list contains critical information about the crew and passengers that may be needed for the investigation of the incident. The other options are incorrect because they do not pertain to the specific requirement for retaining records after a casualty report. The Oil Record Book, hull report, and chart catalogs are not the records that must be retained on board in this scenario.