The world’s largest cruise ship has begun its maiden voyage.

Royal Caribbean’s Icon of the Seas set sail from Miami in Florida on Saturday with a capability for as much as 7,600 passengers and a pair of,350 crew members.

The ship runs almost 1,200ft (365m) from bow to stern and is split into eight neighbourhoods throughout 20 decks.

The vessel options six waterslides, seven swimming swimming pools, an ice skating rink, a theatre and greater than 40 eating places, bars and lounges.

It has begun its first seven-day island-hopping voyage within the tropics.

Icon of the Seas was formally christened on Tuesday with the assistance of soccer legend Lionel Messi and his Inter Miami teammates.

The ship is powered by six dual-fuel engines, which may be powered by liquefied pure fuel (LNG), a gas various the Cruise Lines International Association says reduces sulfur and greenhouse fuel emissions.

However, environmental teams have raised considerations LNG-powered ships improve dangerous methane emissions.

“It’s a step in the wrong direction,” Bryan Comer, director of the Marine Program on the International Council on Clean Transportation (ICCT), informed Reuters.

“We would estimate that using LNG as a marine fuel emits over 120% more life-cycle greenhouse gas emissions than marine gas oil.”

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Methane is 80 instances worse over 20 years than carbon dioxide when it comes to warming results. Cutting the emissions is seen as key to conserving down international temperature warming.

Royal Caribbean says each kilowatt used on the Icon of the Seas “is scrutinized for energy efficiencies and emission reductions.”