NET
17 After the crew had hoisted it aboard, they used supports to undergird the ship. Fearing they would run aground on the Syrtis, they lowered the sea anchor, thus letting themselves be driven along.
Darby
17 which having hoisted up, they used helps, frapping the ship; and fearing lest they should run into Syrtis and run aground, and having lowered the gear they were so driven.
KJV
17 Which when they had taken up, they used helps, undergirding the ship; and, fearing lest they should fall into the quicksands, strake sail, and so were driven.