A diver exits the water after checking the tension on the chains used to haul the sunken tug Respect to the surface of the Oakland Estuary on Wednesday,
A diver exits the water after checking the tension on the chains used to haul the sunken tug Respect to the surface of the Oakland Estuary on Wednesday, Dec. 18, 2013, in Oakland, Calif. The tug, which sank at its moorings in 2007, will be hoisted to the surface and transported to a nearby yard for scrapping. (Photo courtesy of Thomas McKenzie/U.S. Coast Guard)