Two relatives of the nine Indianapolis family members who were killed when a duck boat sank in a Missouri lake filed a lawsuit Sunday in federal court seeking $100 million in damages.

The lawsuit was filed in the U.S. District Court in Springfield, Missouri, and names Ripley Entertainment Inc. in Orlando, Florida, Ride the Ducks of Branson International L.L.C. in Jefferson City, Missouri, and Ride the Ducks of Branson, in Branson, Missouri, as defendants.

The duck boat sank in Table Rock Lake on July 19 in a severe storm, drowning 17 of the 31 people on board, including nine members of the same family.

“Despite being aware of impending severe weather conditions, Ripley intentionally decided to take the Duck Boat out onto Table Rock Lake instead of cancelling the tour and refunding the patrons’ money,” the complaint said.

The defendants, the complaint said, had been warned on numerous occasions that “the canopies used on their Duck Boats were dangerous and created death traps for passengers in the event of emergency.”

The complaint said that the defendants were warned as recently as August 2017 that their duck boats’ dangerous design put them at risk of sinking. However, the complaint said, the defendants’ “greed caused them to ignore severe weather conditions that demanded they cancel all trips scheduled for their Duck Boats.”

“Defendants were specifically told that the dangerous design of the Duck Boats rendered them susceptible to sinking in the event of rough conditions on the water due to the improper placement of the motor’s exhaust in front of the boat and below the water line,” the complaint said.

The complaint said that defendants also knew prior to the accident that their duck boats were inherently unsafe, “given that from 1999 to 2016, their boats were directly responsible for the deaths of dozens of innocent people.”

Ripley Entertainment, the owner of Ride the Ducks of Branson, said in a statement that it remains “deeply saddened” by the accident and declined further comment.