The Six Biggest Cruise Ships In The World

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What are the six biggest cruise ships in the world? Let’s explore the grandeur and opulence at sea as we set sail to explore the biggest cruise ships in the world. These floating marvels redefine luxury and leisure, offering unparalleled world-class entertainment, exquisite dining, and boundless adventures.

The Six Biggest Cruise Ships In The World

Water Slides on the Icon of the Seas (1)
Photo Credit, Royal Caribbean

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From towering water slides to lush gardens and state-of-the-art theatres, these colossal vessels are destinations in themselves. If you are looking to sail on a large cruise ship look no further than this list of Biggest and largest ship’s In The World.

Icon of the Seas is the World’s Biggest Cruise Ship at Sea

Icon of the Seas, Largest Cruise Ship in the World in 2024 Photo Credit Royal Caribbean
Photo Credit: Royal Caribbean.

The Icon of the Seas is the world’s largest cruise ship, launched in 2024. It belongs to Royal Caribbean’s Icon Class and will have a gross tonnage of 250,800 GT. As well as being the biggest cruiseliner, it also has the largest waterpark at sea and is doing seven-night sailings in the Western Caribbean.

  • Class: Icon Class
  • Gross Tonnage: 250,800  GT
  • Length: 1,198 ft
  • No of Decks: 20 (18 passenger decks)
  • No of Cabins: 2,805
  • Capacity: 5,610 passengers at double capacity, 7,600 at full.
  • Crew: 2,350 Crew
  • Built: 2023
  • Shipbuilder:  Meyer Turku Shipyard, Finland
  • Cost: $2 Billion
  • Godmother: Erin Brown

2. Wonder of the Seas, The Second World’s Biggest Cruise Ship at Sea

Wonder of the Seas, Largest Cruise Ships in the World Photo Credit Royal Caribbean
Photo Credit: Royal Caribbean.

Wonder of the Seas is the second largest Royal Caribbean ship at sea and in the top 5 cruise ships in the world.

An Oasis-Class Ship with a gross tonnage of 236,857 GT, measuring 1,188 feet long and 215.5 feet wide. She boasts a cruising speed of 22 knots, 18 decks (16 guest decks and two passenger decks), 2,878 cabins, and a capacity of 5,734 passengers at double occupancy or 7,084 at full capacity.

This impressive vessel was built in 2022 by Chantiers de l’Atlantique in Saint-Nazareth, France, and it had its maiden voyage on 4 March 2022. The ship, which comes at a cost of USD 1.35 billion, was christened by its godmother, Marie McCrea.”

3. Symphony of the Seas

Symphony of the Seas, Largest Cruise Ships in the World Photo CreditSBW-Photo, Royal Caribbean
Photo Credit: SBW-Photo, Royal Caribbean

Symphony of the Seas is currently the third biggest ship in the world.

  • Class: Symphony of the Seas is an Oasis Class Ship, Royal Caribbean
  • Gross Tonnage: 228,081 GT
  • Length: 1,188 ft
  • Beam: 215.5
  • Speed: 22 Knots Cruising Speed
  • No of Decks: 18, 16 guests, 2 crew
  • No of Cabins/Staterooms: 2,759
  • Capacity: 5,518 passengers at double capacity, 6,680 at full
  • Crew Members: 2,200 crew
  • Built: 2018
  • Shipbuilder: Chantiers de l’Atlantique, Saint-Nazareth, France
  • Maiden voyage: 7 April 2018
  • Cost: US$1.35 billion
  • God Parents: Alexa, Carlos and Ocean Penavega

4. Harmony of the Seas

Harmony of the Seas, Largest Cruise Ships in the World Photo Credit Royal Caribbean
Photo Credit: Royal Caribbean.

Harmony of the Seas is currently the fourth biggest ship in the world an is one of the 5 largest cruise ships in the world.

  • Class: Harmony of the Seas is an Oasis Class ship, Royal Caribbean
  • Gross Tonnage: 226,963 GT
  • Length: 1,188.1 ft
  • Width:  215.5 ft
  • Speed: 22 Knots Cruising Speed
  • No of Decks: 18, 16 guests, 2 crew
  • No of Cabins: 2,747
  • Capacity: 5,479 passengers a double capacity, 6,687 at full
  • Crew: 2200 crew
  • Built: 2016
  • Shipbuilder: Chantiers de l’Atlantique
  • Maiden voyage: 29 May 2016
  • Cost: US$1.35 billion
  • Godmother: Brittany Affolter

5. Oasis of the Seas  (Oasis of the Seas is Heavier Than Sister Ship Allure of the Seas)

Oasis of the Seas, Largest Cruise Ships in the World Photo Credit Royal Caribbean
Photo Credit: Royal Caribbean.

Oasis of the Seas is currently the fifth biggest ship in the world and is in the top 5 largest cruise ships.

  • Class: Oasis of the Seas was the first of the groundbreaking Oasis Class, Royal Caribbean
  • Gross Tonnage: 226,838  GT
  • Length: 1,187 ft
  • Width 215 ft
  • Speed: 22 Knots Cruising Speed
  • No of Decks: 18 (16 passenger decks)
  • No. of Cabins: 2,801
  • Capacity: 5,602 passengers at double capacity, 6,771 a full capacity
  • Crew: 2,109 crew
  • Built: 2009
  • Shipbuilder: STX Europe, Turku Shipyard, Finland
  • Maiden voyage: 5 December 2009
  • Cost: US$1.4 billion
  • Godmothers: Daisy Fuentes, Dara Torres, Gloria Estefan, Jane Seymour, Keshia Knight Pulliam, Michelle Kwan, Shawn Johnson

6. Allure of the Seas

Allure of the Seas, Largest Cruise Ships in the World Photo Credit Royal Caribbean
Photo Credit: Royal Caribbean.

Allure of the Seas is currently the sixth biggest ship in the world.

  • Class: Oasis Class, Royal Caribbean
  • Gross Tonnage: 225,282  GT
  • Length: 1,187 ft
  • Width: 215 ft
  • Speed: 22 Knots Cruising Speed
  • No of Decks: 18 (16 passenger decks)
  • No of Cabins: 2,748
  • Capacity: 5,466 passengers at double capacity, 6,828 at full.
  • Crew: 2,054 Crew
  • Built: 2010
  • Shipbuilder: STX Europe, Turku Shipyard, Finland
  • Maiden voyage: 5 December 2010
  • Cost: US$1.2 billion
  • Godmother: Princess Fiona

What Our Kids Thought About Anthem of the Seas

Anthem of the Seas Photo Credit SBW-Photo Royal Caribbean.
Photo Credit: SBW-Photo Royal Caribbean.

We have recently returned from a fantastic weekend aboard Royal Caribbean’s Anthem of the Seas. This is a Quantum Class Ship and, as such, has a different vibe and innovations than Royal Caribbeans Oasis Class Ships, such as Allure and Oasis of the Seas. Check out our review, Cruising with Children on Anthem of the Seas.

Anthem of the Seas Review

See More of the Biggest Cruise Ships in the World

Biggest Cruise Ships in the World Photo Credit Royal Caribbean.
Photo Credit: Royal Caribbean.

Join us as we step aboard these magnificent giants, each one a floating city that promises a vacation experience like no other. It’s time to discover the top five cruise ships that redefine the meaning of indulgence and exploration on the high seas.

Authors

  • Sarah Christie is a passionate family travel expert. With years of experience exploring the world by sea, Sarah specialises in helping families plan unforgettable cruise holidays with practical tips, honest reviews, and insider advice. From navigating mega ships with little ones to finding the best family-friendly excursions, she’s on a mission to make cruising stress-free and magical for all ages. Now that her children are grown up, Sarah is also embracing a new chapter of cruising as a couple, exploring adult-only experiences, romantic escapes, and bucket-list destinations with a fresh perspective.

    She also co-hosts the popular Magically Cruising Podcast, where she shares cruise news, destination insights, and first-hand experiences to inspire both first-time cruisers and seasoned sailors.

    Contact me on travelingchristie@gmail.com

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  • Donna

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