Question 3797 Deck General

The correct answer is B) Owner. The owner of the mobile offshore drilling unit is responsible for ensuring that all records required by regulations are retained on board the vessel. This is based on the regulations outlined in 46 CFR 109.431, which state that the owner of the mobile offshore drilling unit is responsible for maintaining all required records and making them available for inspection by the Officer in Charge, Marine Inspection (OCMI). The other options are incorrect because the pilot, engineer, and OCMI do not have the primary responsibility for retaining records on board the vessel. The OCMI is responsible for inspecting the records, but the owner is the party legally required to ensure the records are maintained on the unit.