Late Saturday, tugboat drivers sounded their horns in celebration of the most visible sign of progress since the ship ran aground late Tuesday.
The 220,000-ton ship moved. It did not go far — just two degrees, or about 100 feet, according to shipping officials. That came on top of progress from Friday, when canal officials said dredgers had managed to dig out the rear of the ship, freeing its rudder.
The company that oversees the ship’s operations and crew, Bernhard Schulte Shipmanagement, said 11 tugboats were helping, with two joining the struggle on Sunday. Several dredgers, including a specialized suction dredger that can extract 2,000 cubic meters of material per hour, dug around the vessel’s bow, the company said.
Salvagers were determined to free the vessel as the spring tide rolled in, raising the canal’s water level as much as 18 inches, analysts and shipping agents said.
It was a delicate mission, with crews trying to move the ship without unbalancing it or breaking it apart.
With the Ever Given sagging in the middle, its bow and stern both caught in positions for which they were not designed, the hull is vulnerable to stress and cracks, according to experts. Just as every high tide brought hope the ship could be released, each low tide puts new stresses on the vessel.
Teams of divers have been inspecting the hull throughout the operation and have found no damage, officials said. It would need to be inspected again once it was completely free.
And it would take some time to also inspect the canal itself to ensure safe passage. With hundreds of ships backed up on either side, it could be days before operations return to normal.
Thomas Erdbrink contributed reporting.