What are Royal Caribbean 4 biggest ships?

Here, every Royal Caribbean ship currently in operation is ranked from biggest to smallest.
  • Wonder of the Seas. MICHEL VERDURE STUDIO/ROYAL CARIBBEAN. ...
  • Symphony of the Seas. ROYAL CARIBBEAN. ...
  • Harmony of the Seas. MICHEL VERDURE/ROYAL CARIBBEAN. ...
  • Oasis of the Seas. ...
  • Allure of the Seas. ...
  • Spectrum of the Seas. ...
  • 7 (tied). ...
  • 7 (tied).




As of early 2026, the four largest ships in the Royal Caribbean fleet are led by the groundbreaking Icon of the Seas, which remains the largest cruise ship in the world at over 250,800 gross tons. Close behind is its sister ship, Star of the Seas, which debuted in 2025 to meet the massive demand for the Icon-class experience. The third and fourth spots are held by the newest members of the Oasis-class: Utopia of the Seas (launched in 2024) and Wonder of the Seas (2022). These floating cities are architectural marvels, featuring "neighborhoods," massive water parks like Category 6, and a passenger capacity that can reach up to 7,600 guests. While the Oasis-class revolutionized the industry with its split-hull design and central park, the Icon-class has pushed boundaries further with more sophisticated sustainable technology (like LNG power) and the world's largest waterpark at sea. These ships are so large that they primarily dock at specialized ports in the Caribbean and Port Canaveral, serving as destinations in their own right.

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Royal Caribbean Wonder of the Seas As of 2023, Royal Caribbean's Wonder of the Seas is the largest cruise ship in the world. Launched in 2022, the Oasis-class vessel can accommodate up to 7,084 guests in 2,867 staterooms and carries as many as 2,204 crew members.

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The Allure of the Seas is the fourth largest cruise ship in the world, and right now, you'll have to travel to Florida to get onboard.

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The oldest Royal Caribbean cruise ship is Grandeur of the Seas. Unveiled way back in 1996, it's not just the oldest Royal Caribbean ship but the smallest Royal Caribbean ship — far smaller than the newest Royal Caribbean vessels.

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The hype for Royal Caribbean's newest ship, Icon of the Seas, has been building for a long time with record-breaking sales -- and in January 2024, the latest class from the line will debut. The 7,600-passenger vessel promises to be a showstopper, especially the new glass-covered AquaDome.

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Six months before its maiden voyage, Royal Caribbean's massive new ship, the Icon of the Seas, is already generating an incredible response – and when you take a look at the pictures, that's absolutely zero surprise. The ship is reportedly five times bigger than the Titanic, boasting 20 decks.

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Later, in May 2022, Royal Caribbean confirmed that Icon of the Seas would be bigger than the Oasis class.

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Both companies are market leaders in terms of fleet sizes. That said, Royal Caribbean has more ships and they're often larger, which means additional dining, activities and lodging options for passengers.

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When the stabilizers aren't needed, they are retracted into the vessel's side. Older and smaller ships are less likely to have this technology and are much more apt to feel the motion of the ocean. A mega-ship, such as Royal Caribbean's Harmony of the Seas, might just be the best cruise ship to avoid seasickness.

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royal caribbean's icon of the seas to sail in 2024 as world's biggest cruise ship with waterpark.

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1st POSITION: SYMPHONY OF THE SEAS With 18 decks, capacity for 6,780 passengers and 2,100 members of the crew the Symphony of the Seas is now the biggest cruise ship in the world.

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Following the Independence of the Seas, the Explorer of the Seas and the Mariner of the Seas, the Symphony became the fourth Royal Caribbean ship to be drydocked at the Spanish shipyard in 2023. After the work, 2018-built vessel kicked off a summer program in the Western Mediterranean on April 16.

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