The world’s largest cruise ship — the size of almost four city blocks — is raising environmental concerns after setting sail on Saturday.
Royal Caribbean’s Icon of the Seas is powered by six dual-fuel engines, which can be powered by liquefied natural gas (LNG), a fuel alternative that the Cruise Lines International Association says reduces sulphur and greenhouse gas emissions.
However, some environmentalists worry that LNG-powered ships increase methane emissions. Others say that vacationers generate eight times more carbon on a cruise than they do on land.
Royal Caribbean says every kilowatt used on Icon of the Seas “is scrutinized for energy efficiencies and
