The Finnish construction of cruise liner Freedom of the Seas, which was launched in 2006 and, at 18 storeys in height and a quarter of a mile in length, is the largest in the world. As cameras show the many features such as the surf park and ice rink, experts investigate whether at 160,000 tonnes this is the maximum size ocean-going technology will reach before having too great a mass to float
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Ready to Watch MegaStructures, Season 4, Episode 26?