After jacking down your liftboat you have an unexpected list. You find that the only cause of this list must be a flooded leg. To keep adequate stability you should __________.

Correct Answer: Option C — jack back up and ballast the vessel's high side as necessary

A flooded leg on a liftboat creates a severe asymmetrical weight and loss of reserve buoyancy. Jacking back up and ballasting the high side restores a level platform and safe positive stability before attempting further corrective operations.