The world's largest cruise ship named 'Icon of the Seas' started its maiden voyage on Saturday.
Royal Caribbean International's Icon of the Seas set sail from Miami.
It sailed with a capacity for 8,000 passengers across 20 decks, taking advantage of the surging popularity of cruises.
The ship is built to run on liquefied natural gas (LNG), which burns more cleanly than traditional marine fuel.
However, it poses greater risks for methane emissions.
Royal Caribbean says its new ship is 24% more efficient when it comes to carbon emissions than required by global shipping regulators.
LNG emits fewer greenhouse gases than very low sulfur fuel oil (VLSFO) that powers most of the global shipping fleet.
Of the 54 ships on order from January 2024 to December 2028, 63% are expected to be powered by LNG.