LAND THE TOUGH ONE The 2070 Retriever SC Heavy Duty (SCHD) is a rock-solid addition to the Crestliner family. Measuring in at 20' this heavy-duty aluminum boat boasts a .125" aluminum gauge bottom, a broad beam design and an all-welded aluminum hull that can tackle any pursuit. Not only is this the toughest Retriever model but it's also one of the most accommodating. When you need a boat that needs to be ready for anything you can count on the Retriever SCHD to handle it.