Remember that Paul was a free-born Roman citizen which gave him the right to an appeal to Caesar. He invoked that right and eventually, Festus turned Paul over to Roman soldiers for transfer to Rome for trial. Part of the journey involved a lengthy sea voyage. During this trip, a great storm hit the ship, and it was shipwrecked. This is a very dramatic account of how the prisoner Paul provided encouragement and prophecy to all the people who were aboard the ship as it broke up and sank.