The United States Coast Guard Marine Board of Investigation has released a final report on the operating company responsible for the Titan submersible, which imploded two years ago while attempting to dive to the wreckage of the Titanic, killing all five on board.

The deep-sea catastrophe was the result of repeated failures by the company and its late CEO to follow safety, testing and maintenance protocols, the Coast Guard said.

A report on the death of five people in the Titan submersible blames design, maintenance, and inspection flaws for its failure. “It all came back to Mr. Rush,” the head of the investigation told WIRED.