ROME , May 6 (UPI) -- A steel pontoon involved in the salvage of the sunken cruise ship Costa Concordia came loose and fell off, causing the stabilizing structure to tilt, Italian officials said Tuesday.
The ship, sitting upright in waters off the Italian island of Giglio, is supported by large pontoons welded to its sides. They are designed to help the ship float before it's towed away later this year.