Question 3227 Deck General

The correct answer is A) filled to ensure that sufficient fuel oil is available during a lengthy emergency. When preparing a MODU (Mobile Offshore Drilling Unit) for heavy weather, the fuel oil day tanks should be filled to their capacity. This ensures that there is a sufficient amount of fuel readily available in the event of a prolonged emergency, such as if the vessel is unable to refuel for an extended period due to the heavy weather conditions. Keeping the day tanks full helps maintain the MODU's power and operational capabilities throughout the storm. The other options are incorrect because: B) draining the tanks to the lower hull could reduce stability, C) partially draining to increase free surfaces would make the vessel more susceptible to excessive motions, and D) pumping fuel overboard would deplete the critical fuel supply needed to power the MODU during the emergency.