Cruise ships have come to epitomize luxury, cutting-edge design, and an unmatched travel experience. As we look ahead, the maritime industry keeps revealing increasingly grand and lavish ships, each competing to be recognized as the largest in the world. This article examines the top 10 colossal cruise ships that sail the seas, providing travelers with a floating paradise of opulence and adventure.
World’s Largest Cruise Ship 2025
The Icon of the Seas, a new creation by Royal Caribbean, is set to become the world’s largest cruise ship when it begins sailing in 2025. This giant ship can carry up to 7,600 passengers along with 2,350 crew members across its 20 decks.
Built especially for families, the ship is like a floating city filled with fun and luxury. It has seven swimming pools, nine whirlpools, and even a full waterpark with six exciting waterslides. The Icon of the Seas promises both adventure and relaxation, making it a truly unforgettable travel experience on the open sea.
Top-10 Biggest Ships in the World in 2025
Icon of the Seas, with the capacity of 7,600, is the biggest cruise ship in the world, followed by Wonder of the Seas, Harmony of the Seas, Symphony of the Seas and Iona.
Here is the list of top-10 biggest ships in the world:
| Largest Ships in the World | |||
| Rank | Name | Cruise Line | Capacity |
| 1. | Icon of the Seas | Royal Caribbean | 7,600 |
| 2. | Wonder of the Seas | Royal Caribbean | 6,988 |
| 3. | Harmony of the Seas | Royal Caribbean | 6,780 |
| 4. | Symphony of the Seas | Royal Caribbean | 6,680 |
| 5. | Iona | P&O Cruises | 5,200 |
| 6. | Mardi Gras | Carnival Cruise Line | 6,500 |
| 7. | MSC Virtuosa | MSC Cruises | 6,334 |
| 8. | Panorama | Carnival Cruise Line | 5,146 |
| 9. | Norwegian Bliss | Norwegian Cruise Line | 4,903 |
| 10. | Discovery Princess | Princess Cruises | 3,660 |
World’s Biggest Cruise Ship – Icon of the Seas
Capacity: 7,600
Cruise Line: Royal Caribbean
Debut date: January 2024
Length: 364.75 m
Width: 48.47 m
Royal Caribbean’s Icon of the Seas takes the top spot as the biggest cruise ship globally, set to debut in January 2024. Measuring an impressive 364.75 meters in length and 48.47 meters in width, this marvel of engineering boasts a gross tonnage of 250,800. Powered by 6 multi-fuel Wartsila engines, it can run on LNG and distillate fuel, making it a pioneer in eco-friendly cruising. With 20 decks, 7 swimming pools, 6 water slides, and capacity for 7,600 guests and a crew of 2,350, it promises an unmatched experience.
Second Largest Ship in the World – Wonder of the Seas
Capacity: 6,988
Cruise Line: Royal Caribbean International
Debut date: January 2022
Length: 362.1 m
Royal Caribbean’s Wonder of the Seas, delivered in January 2022, weighs in at 236,857 gross tonnes. As the fifth vessel in the Oasis class, it introduces new amenities such as a suite neighborhood, redesigned pool decks, and an all-new Aquatheatre. With a length of 1,188 feet, it accommodates 6,988 passengers and 2,300 crew members, showcasing the cruise line’s commitment to pushing the boundaries of onboard luxury.
Third Largest Ship in the World – Harmony of the Seas
Capacity: 6,780
Cruise line: Royal Caribbean International
Debut date: May 2016
Length: 362 m
Weight: 66 m
Delivered in May 2016, Harmony of the Seas, with a gross tonnage of 226,963 GT, is the third Oasis-class vessel from Royal Caribbean. Boasting 2,747 staterooms, virtual balconies, and accommodations for 5,479 guests at double occupancy, it offers a harmonious blend of entertainment, dining, and relaxation.



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