Egypt will impound the giant container ship that blocked the Suez Canal last month until its Japanese owner pays $900m (£652m) in compensation.
One of the Ever Given’s insurers, UK Club, said the Suez Canal Authority had rejected its offer to settle the claim.
It described the claim, which includes $300m for a salvage bonus and $300m for loss of reputation, as “extraordinarily large” and “largely unsupported”.
The Ever Given is anchored in the Great Bitter Lake, the canal’s midway point.
The 400m-long (1,312ft), 220,000-tonne ship became wedged diagonally across the waterway on 23 March after running aground amid high winds and a sandstorm that affected visibility.
It was freed six days later, after a salvage operation involving a flotilla of powerful tug boats and dredging vessels that shifted an estimated 30,000 cubic metres (1.1m cubic ft) of mud and sand.
More than 400 vessels had to wait to pass through the 193km (120-mile) canal, which connects the Mediterranean Sea to the Red Sea and provides the shortest sea link between Asia and Europe.
The chairman of the Suez Canal Authority (SCA), Osama Rabie, said on Tuesday that the Ever Given had been “seized due to its failure to pay $900m” in compensation, Egyptian state media reported.
The figure was based on the “the losses incurred by the grounded vessel as well as the flotation and maintenance costs”, he added.
UK Club – which insured the ship’s owner Shoei Kisen Kaisha for third-party liabilities, including damage caused to infrastructure or claims for obstruction – said in a statement that it had been negotiating in good faith with the SCA “despite the magnitude of the claim”.
“On [Monday], a carefully considered and generous offer was made to the SCA to settle their claim,” it added. “We are disappointed by the SCA’s subsequent decision to arrest the vessel.”
“We are also disappointed at comments by the SCA that the ship will be held in Egypt until compensation is paid, and that her crew will be unable to leave the vessel during this time.”