The owner of the ship that spilled oil into the Mississippi River this spring, shuttering the waterway, is suing the board in charge of the Port of New Orleans for more than $10m.

In the lawsuit, Singaporean company Antares Maritime alleges the port failed to maintain the Nashville Avenue Wharf, causing the hull of the 27,700-dwt Pac Antares (built 2003) to be torn open 12 April.