FILE - In this Feb. 14, 2013 photo, crew members watch the activity on the dock after the Carnival Triumph was towed to the cruise terminal in Mobile, Ala. Want to know about a ship's track record for being clean? Want to assess how good or sanitary the food is? It's not that easy to find, in part because there's no one entity or country that oversees or regulates the industry with its fleet of ships that are like mini cities floating at sea. In the case of Carnival Cruise Lines, the owner of the Carnival Triumph that spent days in the Gulf of Mexico disabled after an engine fire, vacationers looking up information about the ship before boarding would have found mostly clean marks and few red flags.(AP Photo/John David Mercer)

Associated Press
FILE - In this Feb. 14, 2013 photo, crew members watch the activity on the dock after the Carnival Triumph was towed to the cruise terminal in Mobile, Ala.  Want to know about a ship's track record for being clean? Want to assess how good or sanitary the food is? It's not that easy to find, in part because there's no one entity or country that oversees or regulates the industry with its fleet of ships that are like mini cities floating at sea. In the case of Carnival Cruise Lines, the owner of the Carnival Triumph that spent days in the Gulf of Mexico disabled after an engine fire, vacationers looking up information about the ship before boarding would have found mostly clean marks and few red flags.(AP Photo/John David Mercer)
FILE - In this Feb. 14, 2013 photo, crew members watch the activity on the dock after the Carnival Triumph was towed to the cruise terminal in Mobile, Ala. Want to know about a ship's track record for being clean? Want to assess how good or sanitary the food is? It's not that easy to find, in part because there's no one entity or country that oversees or regulates the industry with its fleet of ships that are like mini cities floating at sea. In the case of Carnival Cruise Lines, the owner of the Carnival Triumph that spent days in the Gulf of Mexico disabled after an engine fire, vacationers looking up information about the ship before boarding would have found mostly clean marks and few red flags.(AP Photo/John David Mercer)
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