The Japanese owner of the giant cargo ship that has been blocking Egypt's Suez Canal since Tuesday has apologised for the disruption to global trade.
Shoei Kisen Kaisha said it was trying to resolve the situation as soon as possible, but that dislodging the Ever Given was proving extremely difficult.
Marine and salvage engineers failed in their latest attempt on Thursday.
The 400m-long (1,300ft), 200,000-tonne vessel became wedged across the canal amid high winds and a dust storm.
UPDATE (2021.03.29): Suez Canal is free, the giant ship is unblocked.
Suez Canal says traffic in channel resumes after stranded ship refloated: