27 When the fourteenth night had come, as we were being driven across the Adriatic Sea, about midnight the sailors suspected that they were nearing land. 28 So they took a sounding and found twenty fathoms.  A little farther on they took a sounding again and found fifteen fathoms.  29 And fearing that we might run on the rocks, they let down four anchors from the stern and prayed for day to come. 30 And as the sailors were seeking to escape from the ship, and had lowered the ship's boat into the sea under pretense of laying out anchors from the bow, 31 Paul said to the centurion and the soldiers, “Unless these men stay in the ship, you cannot be saved.” 32 Then the soldiers cut away the ropes of the ship's boat and let it go. (Acts 27:26-32 (ESV)
Paul had said that they would run aground on an island. When the Island is coming the sailors want to take a boat and let the ship fend for itself. A heavy ship does not do well coming to shore. Usually runs aground someway before the shore and tosses people in to the sea, where as a boat can be taken right up onto land. But Paul won’t have it. He lets the centurion know that it is all or none. We are all saved or none of us are saved. If these men don’t stay in the boat, you will be lost. And there went the escape plan. The boat is cut from the ship.