A wrongful death lawsuit has been filed against the organizer of a championship offshore powerboat race in Key West, where three racers died in 2011. The uncle of Jeffrey Tillman filed the lawsuit last week in Broward County Circuit Court. Tillman of Kaiser, Mo., and Robert Morgan of Sunrise Beach, Mo., died when their 46-foot catamaran — Big Thunder Marine — did a reverse flip and violently crashed inside Key West Harbor in front of thousands of fans. The lawsuit names Super Boat International Productions Inc. and its president, John Carbonell, along with four other race officials as defendants.