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"20/20? reports on the crippled Carnival cruise ship Triumph and the eight-day trip to misery that ensued for the more than 4,000 passengers on board. The hour special report will give an in-depth look at what happened to the ship and feature first-hand accounts of the conditions passengers endured. Additionally, the hour will update viewers on the aftermath of another recent cruise ship disaster: the Costa Concordia one year later from Italy; as well as the general health and safety of cruise ships and the secret life that goes on below deck. "Troubled Waters" airs on "20/20," FRIDAY, FEBRUARY 15 (10:00-11:00 p.m., ET) on the ABC Television Network. David Sloan is senior executive producer and John Green is executive producer of "20/20?.

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