Sources said the mishap occurred because of bad weather. Operations to float and free the vessel began on Wednesday morning, they said, adding that some delays to shipping were expected.
Shiptracking data on Refinitiv Eikon showed seven tug boats coming to the aid of the Rotterdam-bound vessel, which appeared in tracking maps to still be grounded. It was unclear how soon the vessel would be free.
The ship is 400 m (1,312 feet) long and 59 m (193 feet) wide, and can carry up to 20,000 20-foot equivalent (TEU) shipping containers.
Taiwan's Evergreen Marine Corp 2603.TW , which is leasing the vessel under a time charter, said the shipowner had informed the company that the ship "was suspected of being hit by a sudden strong wind, causing the hull to deviate from waterway and accidentally hit the bottom and run aground".
BSM, which handles the ship's crew and technical issues, said all the crew are safe and accounted for and that there have been no reports of injuries or pollution.
BSM has notified the authorities and "interested parties" but said it could not confirm who is the owner of the ship.
"All parties are currently investigating the cause of the grounding and it would be incorrect to speculate on any one given cause at this time," BSM said in an e-mail to Reuters.
Port agent GAC said on Wednesday on its website that 15 other ships in the northbound convoy behind the Ever Given were detained at anchorages waiting for the canal to be cleared. A southbound convoy was also blocked.
A growing number of tankers have gathered near the entrance to the canal, waiting to pass through.
Asia-Europe container trade flows are picking up again after the Lunar New Year so an extended blockage would have severe consequences as the alternative route via the Cape route will be a week slower, said Tan Hua Joo, a consultant with Liner Research.
Any delays will exacerbate the shortage of container ships and boxes, as 30% of global container ship capacity passes through the Suez, according to data from Liner Research Services.
During 2020, nearly 19,000 ships, or an average of 51.5 ships per day, with a net tonnage of 1.17 billion tonnes passed through the canal, according to the SCA.
The impact on oil and gas flows will depend on how long it takes to clear the container ship, the sources said.
As of Wednesday, five laden liquefied natural gas (LNG) tankers were unable to pass through the canal due to the grounded container ship, according to data intelligence firm Kpler. Of the five, three were bound for Asia and two for Europe, said Kpler analyst Rebecca Chia.
She said that iIf the congestion persists until the end of this week, it would affect the transit of 15 LNG tankers.
(Reporting by Jessica Jaganathan, Florence Tan, Roslan Khasawneh, Gavin Maguire and Koustav Samanta in Singapore, Yimou Lee in Taipei, Yuka Obayashi in Tokyo, Yusri Mohamed in Ismailia; Editing by Tom Hogue & Simon Cameron-Moore) ((Jessica.Jaganathan@thomsonreuters.com; +65 6870 3822; Reuters Messaging: firstname.lastname@example.org; Twitter: https://twitter.com/j3ssi3))