The 1994 sinking of the ferry Estonia is up there with the Titanic as one of the worst maritime disasters in history. This week, a Swedish-Estonian-Finnish investigative team said the shipwreck, which led to the deaths of more than 800 people, was caused by a structural failure. Their report is a bid to put to rest 30 years of controversy surrounding the cause of the sinking, as Kristjan Tabri tells Host Marco Werman. He’s a professor of marine technology at the Tallinn University of Technology.