March 27, 2018 8:28 am Royal Caribbean Debuts World's Largest Cruise Ship Royal Caribbean’s Symphony of the Seas will make its maiden voyage on March 31. The 228,081-gross-ton ship features unique rooms, dining and the world’s tallest water slide US & World Videos 4:17 Kelly Clarkson meets NHL's first female Stanley Cup keeper 2:33 Nicholas Galitzine reveals favorite ‘The Idea Of You' scene with Anne Hathaway 1:46 Anne Hathaway reflects on chemistry read with Nicholas Galitzine for ‘The Idea Of You' 2:01 No evidence Oceanside Pier fire was arson, officials say 2:08 Travis Kelce calls Taylor Swift his ‘significant other' as they attend Charity Gala Date Night