A lawsuit filed in February on behalf of dozens of passengers argues the cruise line and its parent Carnival Corporation were negligent in maintenance, allowing Triumph to sail from Galveston on Feb. 7.
A February 10 fire disabled the ship. Passengers endured a nightmarish tow to Mobile, Alabama.
CNN first reported on the newly filed documents.
Carnival said in a response filed Tuesday that the ship's engines passed inspection before departing for the four-day cruise and its own recommendation to install spray shields on flexible fuel lines was beyond any required safety measures.