The Suez Canal was blocked for six days from 23 to 29 March 2021 by the Ever Given, a container ship that had run aground in the canal. The 400-metre-long (1,300 ft), 224,000-ton, 20,000 TEU vessel was buffeted by strong winds on the morning of 23 March, and ended up wedged across the waterway with its bow and stern stuck on opposite canal banks, blocking all traffic until it could be freed. Egyptian authorities said that "technical or human errors" may have also been involved. The obstruction occurred south of the two-channel section of the canal, so other ships could not pass. The Suez Canal Authority (SCA) hired Royal Boskalis through its subsidiary Smit International to manage marine salvage operations. The blockage of one of the world's busiest trade routes slowed trade between Europe, Asia, and the Middle East, tying up goods worth an estimated US$9.6 billion per day. By 28 March, at least 369 ships were queuing to pass through the canal.