1789. While your vessel is docked port side to a wharf, a sudden gale force wind causes the vessel's stern lines to part. The stern begins to fall away from the dock, and no tugs are immediately available. Which measure (s) should you take FIRST?

A sudden gale causes stern lines to part while cargo is transferring; the immediate priority is to stop the transfer to prevent spills, fires, or equipment damage, as cargo transfer operations require immediate shutdown capabilities in emergency situations.