HELSINKI, Oct. 29 (Xinhua) -- The world's largest cruise ship "Allure of the Seas," built in Finnish Turku Shipyard, left Turku on Friday and proceeded directly to Florida Fort Lauderdale of the United States. The construction of cruise ship "Allure of the Seas" was completed and handed over to Royal Caribbean International on Oct. 28. The cruise ship will be serving its first cruise trip in December 2010. The "Allure of the Seas" is an architectural fantasy on the sea. It is 361-meters long, 66-meters wide, 72-meters high above the water, and its gross tonnage is up to 225,000 tons....