Acts 27:27-31

The fourteenth night had come and we were drifting and being driven about in the Adriatic Sea, when about midnight the sailors began to suspect that they were approaching some land. So they took soundings [using a weighted line] and found [the depth to be] twenty fathoms (120 feet); and a little farther on they sounded again and found [the depth to be] fifteen fathoms (90 feet). Then fearing that we might run aground somewhere on the rocks, they dropped four anchors from the stern [to slow the ship] and kept wishing for daybreak to come. But as the sailors were trying to escape [secretly] from the ship and had let down the skiff into the sea, pretending that they were going to lay out anchors from the bow, Paul said to the centurion and the soldiers, “Unless these men remain on the ship, you cannot be saved.”