25 Largest Cruise Ships in the World: Grand Scale Adventure

google news icon 150px
Exterior photo of Wonder of the Seas

Disclosure: This post may contain affiliate links. We may receive compensation when you purchase via my links at no cost to you. See my disclosure for more information.

Cruise ships are getting bigger and bigger all the time. It’s pretty often that by the time a new world’s largest cruise ship is built, an even bigger one is being developed.

The largest cruise ship in the world is currently Royal Caribbean’s Icon of the Seas. At 250,80 gross tons, the vessel is almost five times larger than the famous Titanic!

The list of ships changes as new vessels enter service in the fast-paced cruise industry. We will do our best to keep the list up to date with accurate information on these behemoth ships.

Top 25 Largest Cruise Ships in the World

Exterior photo of Wonder of the Seas
(Photo Credit: Royal Caribbean International)

There are many different ways to measure the size of cruise ships. For instance, the size of ships can be based on length, passenger capacity, or gross tonnage. We will be using gross tonnage as a measure for ship size for our list.

Gross tonnage (GT) is defined as the total volume of a vessel, expressed in units of 100 cubic feet, excluding specific open structures such as deckhouses.

1. Icon Of The Seas

Royal Caribbean Icon of the Seas rendering of the aft

Royal Caribbean’s new Icon of the Seas is set to become the largest cruise ship in the world, with an anticipated internal volume of 250,800 GT, a length of 1,198 ft, and accommodations for 5,610 guests at double occupancy and 7,600 at maximum occupancy.

The completed cruise ship will boast 20 total decks, seven pools, nine whirlpools, eight neighborhoods, 2,350 international crew members, and 2,805 guest staterooms.

“With each new ship, we raise the bar in the travel industry while enhancing what our guests know and love,” said Jason Liberty, president, and CEO, of Royal Caribbean Group. “From the moment they step on board, every experience is specifically designed to give them the best vacation anywhere on land and at sea. With Icon of the Seas, we’ve taken this to a new level and made the ultimate family vacation.” 

Icon Of The Seas Stats
  • Length: 365 m
  • Beam: 65 m
  • Gross Tonnage: 250800 GT
  • Passengers: 5610
  • Crew: 2350
  • Cruise Line: Royal Caribbean International
  • 2. Wonder Of The Seas

    Royal Caribbean Wonder of the Seas docked in Labadee Haiti in 2023 from the Oasis class of Royal Caribbean ship classes

    Wonder of the Seas is the fifth Oasis-class vessel from Royal Caribbean. On her debut in 2022, Wonder of the Seas become the largest cruise ship in the world, overtaking her sister ship, Symphony of the Seas. The ship has one additional neighborhood than previous Oasis-class ships, with eight distinct zones around the ship.

    The new zone, Suite Neighborhood, is an exclusive area on the ship for guests booked in Suite cabins. Additionally, the ship features a revamped Aquatheatre, ten-foot Ultimate Abyss slide, Giovanni’s Italian Kitchen & Wine Bar specialty restaurant, The Perfect Storm, aqua park Splashaway Bay, and the Wonder Playscape.

    Wonder Of The Seas Stats
  • Length: 362 m
  • Beam: 64 m
  • Gross Tonnage: 236857 GT
  • Passengers: 5734
  • Crew: 2394
  • Cruise Line: Royal Caribbean International
  • 3. Symphony Of The Seas

    Symphony of the Seas docked in CocoCay private island in the Bahamas

    Symphony of the Seas is the 25th ship in Royal Caribbean’s fleet and the fourth Oasis-class vessel. It is currently the world’s largest cruise ship at 228,081 gross tons and measures 1,188 feet in length.
    The ship was built at STX France shipyard and departed on its official maiden voyage on April 7, 2018, on a 7-night Mediterranean cruise from Barcelona, Spain.

    The ship was built at STX France shipyard and departed on its official maiden voyage on April 7, 2018, on a 7-night Mediterranean trip from Barcelona, Spain.

    Symphony Of The Seas Stats
  • Length: 362 m
  • Beam: 46 m
  • Gross Tonnage: 228081 GT
  • Passengers: 5518
  • Crew: 2394
  • Cruise Line: Royal Caribbean International
  • 4. Harmony Of The Seas

    Royal Caribbean's Harmony of the Seas Aerial View

    Harmony of the Seas is the third Oasis-class ship, slightly overtaking her two previous sister ships. The vessel is the first ship to feature the 10-story Ultimate Abyss – the tallest slide at sea.

    Harmony Of The Seas Stats
  • Length: 362 m
  • Beam: 46 m
  • Gross Tonnage: 226963 GT
  • Passengers: 5497
  • Crew: 2394
  • Cruise Line: Royal Caribbean International
  • 5. Allure Of The Seas

    Allure of the Seas Arriving at port in Nassau Bahamas

    Measuring 50 millimeters longer than Oasis, Allure of the Seas is the second record-breaking Oasis-class ship from Royal Caribbean. The ship features many familiar Oasis-class amenities, including ice rinks, a two-deck dance hall, a theatre with 1,380 seats, an ice skating rink, a concierge club, a spa, and fitness facilities.

    The ship also has 25 dining options, including the first Starbucks on a cruise ship.

    Allure Of The Seas Stats
  • Length: 360 m
  • Beam: 64 m
  • Gross Tonnage: 225282 GT
  • Passengers: 5492
  • Crew: 2150
  • Cruise Line: Royal Caribbean International
  • 6. Oasis Of The Seas

    Oasis of the Seas sailing close to land

    The first vessel in the Oasis-class of cruise ships, Oasis of the Seas was the biggest cruise ship in the world when it entered service in 2009.

    With 16 passenger decks and 2,742 guest cabins, the ship can accommodate 6,296 passengers. The ship introduced many new amenities that were firsts for the cruise industry, including an outdoor Aqua Theater and an open-air corridor cared out along the vessel’s center, which includes the fan-favorite central park.

    In addition, Oasis of the Seas features seven distinct themed zones, two surf simulators, a 10-story high zip line, rock climbing walls, five swimming pools, and much more.

    Oasis Of The Seas Stats
  • Length: 311 m
  • Beam: 49 m
  • Gross Tonnage: 225282 GT
  • Passengers: 5592
  • Crew: 2150
  • Cruise Line: Royal Caribbean International
  • 7. World Europa

    MSC World Europa Rendering With Island in the Background

    It won’t be the world’s biggest cruise ship, but it will be close. At around 205,000 gross tons, MSC World Europa will be nearly as big as Royal Caribbean’s record-size Oasis-class vessels, including the previously mentioned Wonder of the Seas.

    There is one measurement that MSC World Europa outshines the Oasis-class ships, and that’s its height. At 21 decks high, the ship is not only three decks taller than the Oasis-class ships, but it will be the tallest cruise ship in the world.

    The ship can hold 6,762 passengers in its 2,366 staterooms at maximum capacity.

    In addition, MSC World Europa will have six pools, fourteen hot tubs, an 11-story slide, and an Aquapark with multiple waterslides that integrate with virtual reality technology.

    World Europa Stats
  • Length: 333 m
  • Beam: 47 m
  • Gross Tonnage: 215863 GT
  • Passengers: 5240
  • Crew: 2138
  • Cruise Line: MSC Cruises
  • 8. Arvia

    P&O Cruises Arvia sailing in open water rendering

    The MS Arvia is an Excellence-class cruise ship operating for P&O Cruises, a subsidiary of Carnival Corporation & plc.

    The ship was constructed by Meyer Werft, a German shipbuilder, and was delivered to P&O Cruises on 9 December 2022. P&O Arvia, with a gross tonnage of approximately 184,700, is the largest ship ever commissioned for the British cruise market.

    The Arvia’s normal passenger capacity is 5,200, but this can be expanded to 6,264 if every bed is filled. The ship’s maiden voyage was originally scheduled for 9 December 2022 but was delayed to 23 December 2022. Arvia’s maiden voyage was a 14-night Canary Islands cruise from Southampton. On 2 March 2023, it was announced that Nicole Scherzinger would be Arvia’s godmother.

    Arvia Stats
  • Length: 345 m
  • Beam: 42 m
  • Gross Tonnage: 184700 GT
  • Passengers: 5206
  • Crew: 1762
  • Cruise Line: P&O Cruises
  • 9. Iona

    P&O Iona sailing in open water

    Another LNG-powered cruise ship on our list comes from British-based P&O Cruises. Iona was initially scheduled to begin service in May 2020; however, the Coronavirus pandemic delayed its delivery was to October 2020.

    Once delivered, the ship spent many months on hold as the cruise industry suspended sailing operations. Iona’s maiden voyage sailed on August 7, 2021, which anchored at the ship’s namesake island for a spectacular kaleidoscopic firework display.

    Iona Stats
  • Length: 345 m
  • Beam: 42 m
  • Gross Tonnage: 184089 GT
  • Passengers: 5206
  • Crew: 1762
  • Cruise Line: P&O Cruises
  • 10. Carnival Celebration

    Carnival Celebration Rendering

    Carnival Celebration holds the title of being the largest vessel of the Carnival Cruise Line fleet. Celebration marks the second addition to Carnival’s Excel class fleet, a specialized subclass under Carnival Corporation & plc’s Excellence class.

    With an impressive gross tonnage of 183,900 GT, Carnival Celebration provides plenty of entertainment and dining venue for over 5,347 passengers.

    Carnival Celebration Stats
  • Length: 344 m
  • Beam: 42 m
  • Gross Tonnage: 183900 GT
  • Passengers: 5374
  • Crew: 1735
  • Cruise Line: Carnival Cruise Line
  • 11. Carnival Jubilee

    Carnival Jubilee Rendering


    Carnival Jubilee is set to be the third vessel in Carnival Cruise Line’s Excel class, joining the ranks of her sister ships, Mardi Gras and Carnival Celebration.

    With an imposing size of 183,900 gross tons, the ship can host 5,374 guests under double occupancy and up to 6,631 passengers when fully occupied. Despite a delay in her original launch date, Carnival Jubilee is now gearing up to greet guests on her maiden voyage scheduled for December 23, 2023.

    Carnival Jubilee Stats
  • Length: 344 m
  • Beam: 53 m
  • Gross Tonnage: 183900 GT
  • Passengers: 5347
  • Crew: 1735
  • Cruise Line: Carnival Cruise Line
  • 12. Mardi Gras

    Carnival's Mardi Gras Sailing in open ocean

    Mardi Gras is the first XL-class cruise ship operated by the world’s largest cruise ship operator, Carnival Cruise Lines. The 180,000 Gross Ton LNG-powered ship is a tribute to Carnival’s first-ever cruise ship, the TSS Mardi Gras.

    Mardi Gras brought new features to the cruise industry, including BOLT, the first roller coaster at sea. In addition, the cruise ship is divided into six distinct themed zones for guests to explore.

    Mardi Gras Stats
  • Length: 344 m
  • Beam: 42 m
  • Gross Tonnage: 183900 GT
  • Passengers: 5282
  • Crew: 1745
  • Cruise Line: Carnival Cruise Line
  • 13. AIDAcosma

    AIDAcosma Departing Meyer Werft Shipyard in Germany

    AIDAcosma is an Excellence-class vessel designed to provide luxurious and environmentally friendly cruise experiences. The cruise ship is powered by liquefied natural gas (LNG), which reduces emissions by up to 20%.

    AIDAcosma was designed with numerous amenities and unique features to enhance the cruising experience for its passengers. These features often include a variety of dining options, spacious cabins, recreational facilities, entertainment venues, and even wellness areas.

    AIDAcosma Stats
  • Length: 337 m
  • Beam: 42 m
  • Gross Tonnage: 183900 GT
  • Passengers: 5400
  • Crew: 1500
  • Cruise Line: AIDA Cruises
  • 14. AIDAnova

    AIDAnova sailing in San Fransisco with Golden Gate Bridge in the background

    AIDAnova is operated by the German-based and Carnival-owned Aida Cruises. It is the first new-generation class of ships ordered by any Carnival-owned cruise line and officially entered into service in December 2018.

    The ship was built at the famous Meyer Werft shipyard in Papenburg, Germany, and is powered by LNG technology.

    AIDAnova Stats
  • Length: 337 m
  • Beam: 42 m
  • Gross Tonnage: 183900 GT
  • Passengers: 5400
  • Crew: 1500
  • Cruise Line: AIDA Cruises
  • 15. Costa Smeralda

    Costa Smeralda sailing in open waters

    Costa Smeralda is the cruise line’s largest vessel and its first ship powered by Liquified Natural Gas (LNG). LNG technology allows for a significant reduction in the ship’s greenhouse gas emissions compared to traditional diesel engines, which is a good thing considering the amount of fuel required to operate such a large vessel.

    The ship was built at the Meyer Turku shipyard in Finland and was delivered on December 5, 2019.

    As previously mentioned, Costa Smeralda is the largest cruise ship commissioned by Italian cruise line Costa Cruises with 185,100GT and a maximum capacity of 6554 passengers and 1646 crew members.

    Costa Smeralda Stats
  • Length: 337 m
  • Beam: 42 m
  • Gross Tonnage: 183900 GT
  • Passengers: 5282
  • Crew: 1678
  • Cruise Line: Costa Cruises
  • 16. Costa Toscana

    Costa Toscana sailing in open water

    Costa Toscana is the third ship of the Carnival-owned Italian cruise line Costa Cruises fleet. Just like its sister ship, Costa Smeralda, the ship is powered by LNG. In a press release upon the ship’s delivery, Costa Cruises stated that the ship represents a tribute to the Tuscany region in Italy.

    Costa Toscana Stats
  • Length: 337 m
  • Beam: 42 m
  • Gross Tonnage: 183900 GT
  • Passengers: 5322
  • Crew: 1678
  • Cruise Line: Costa Cruises
  • 17. MSC Euribia

    MSC Euribia departing Chantiers de l’Atlantique shipyard in france

    MSC Euribia is the 22nd vessel in the MSC Cruises fleet. It stands out as one of the most energy-efficient cruise ship designs to date and is the second ship in MSC Cruises’ lineup to be powered by liquefied natural gas (LNG). The ship was officially delivered on May 3, 2023 during a ceremony held at the Chantiers de l’Atlantique shipyard in Saint-Nazaire, France.

    What sets MSC Euribia apart is its incorporation of state-of-the-art sustainable technologies. These advancements include advanced onboard water and waste treatment facilities, which contribute to the ship’s environmentally friendly operations. Additionally, the vessel boasts cutting-edge heating, cooling, and ventilation systems, ensuring optimal energy efficiency throughout its operation. Furthermore, MSC Euribia is equipped with an underwater radiated noise management system, enhancing the ship’s environmental performance by reducing its impact on marine life.

    With its emphasis on sustainability and energy efficiency, MSC Euribia represents MSC Cruises’ commitment to responsible and eco-conscious cruising. By leveraging LNG as a fuel source and implementing innovative technologies, the company aims to minimize its environmental footprint and provide passengers with an environmentally friendly cruise experience.

    MSC Euribia Stats
  • Length: 331 m
  • Beam: 43 m
  • Gross Tonnage: 181541 GT
  • Passengers: 4828
  • Crew: 1704
  • Cruise Line: MSC Cruises
  • 18. MSC Grandiosa

    MSC Grandiosa Sailing in open ocean

    MSC Grandiosa launched in November 2019 and is the first Meraviglia Pluss-class cruise ship for MSC Cruises. The vessel features the world’s first Humanoid Robotic Bartender at Sea!

    MSC Grandiosa Stats
  • Length: 331 m
  • Beam: 43 m
  • Gross Tonnage: 181541 GT
  • Passengers: 4888
  • Crew: 1704
  • Cruise Line: MSC Cruises
  • 19. MSC Virtuosa

    MSC Virtuosa arrives in Dubai for Christening ceremony with burj khalifa in the background

    MSC Virtuosa is the second Meraviglia Pluss-class cruise ship built by MSC Cruises. She was delivered on February 1, 2021, but due to a pause in cruise ship operations due to the Coronavirus pandemic, the ship’s maiden voyage didn’t occur until November 2021.

    MSC Virtuosa Stats
  • Length: 331 m
  • Beam: 43 m
  • Gross Tonnage: 181541 GT
  • Passengers: 4810
  • Crew: 1704
  • Cruise Line: MSC Cruises
  • 20. MSC Bellissima

    MSC Bellissima Sailing in open ocean

    MSC Cruises launched MSC Bellissima in 2019. The technologically advanced cruise ship offers a luxurious and unforgettable experience for guests with a wide range of amenities and entertainment options.

    MSC Bellissima features multiple dining venues, including specialty restaurants, and offers a variety of culinary experiences. Passengers can enjoy entertainment options such as a breathtaking LED sky screen, exclusive Cirque du Soleil at Sea performances, bars, lounges, and theaters. The ship also has a spa, wellness center, pools, water park, and sports area for relaxation and activities. The staterooms are stylish and comfortable, catering to various needs. MSC Bellissima incorporates eco-friendly technologies and practices to minimize its ecological impact.

    MSC Bellissima Stats
  • Length: 315 m
  • Beam: 43 m
  • Gross Tonnage: 171598 GT
  • Passengers: 4488
  • Crew: 1536
  • Cruise Line: MSC Cruises
  • 21. MSC Meraviglia

    msc meraviglia near land

    MSC Meraviglia joined the MSC Cruises fleet in June 2017. One of this first-in-class vessel’s biggest highlights is the large LED roof display along the promenade. 

    The ship is recognized for bringing some of the latest advances in customer-centric technology and digital innovations to the high seas. This ship is a fantastic choice for families and food lovers alike.

    MSC Meraviglia Stats
  • Length: 315 m
  • Beam: 43 m
  • Gross Tonnage: 171598 GT
  • Passengers: 4488
  • Crew: 1536
  • Cruise Line: MSC Cruises
  • 22. MSC Seascape

    MSC Seascape rendering in open ocean

    MSC Seascape is part of the Seaside EVO class, an evolution of the Seaside class, which includes the MSC Seashore. This class of ships is known for its environmentally friendly technologies and design enhancements that enhance guest comfort and provide even more significant connections with the sea.

    The Seaside EVO class vessels feature cutting-edge technologies for energy efficiency, environmental performance, and guest-centric enhancements. Passengers are provided with multiple dining options, numerous entertainment offerings, panoramic public areas for impressive sea views, and comfortable cabins and suites.

    MSC Seascape Stats
  • Length: 339 m
  • Beam: 41 m
  • Gross Tonnage: 170412 GT
  • Passengers: 4540
  • Crew: 1648
  • Cruise Line: MSC Cruises
  • 23. MSC Seashore

    MSC Seashore sailing in open water on route to naming ceremony

    MSC Seashore was constructed by Italian shipbuilder Fincantieri, and it’s a part of MSC Cruises’ Seaside EVO class. The Seaside Evo class is a further evolution of the Seaside class of ships, providing cruisers with an upgraded vacation experience.

    Launched in 2021, MSC Seashore spans 339 meters in length and has a maximum capacity of 5,877 passengers and 1,648 crew members.

    Designed with a commitment to sustainability and environmental stewardship, MSC Seashore boasts state-of-the-art technologies that minimize its environmental footprint. It features a selective catalytic reduction system to decrease nitrogen oxide, exhaust gas cleaning systems to cut sulfur oxide emissions, and an advanced wastewater treatment system.

    The ship is designed to provide guests with more open-air space with more deck space per passenger than any other ship in the MSC Cruises fleet. Seashore offers a variety of amenities for passengers, including multiple dining options, extensive entertainment offerings, an outdoor water park, spacious cabins and suites, and panoramic public areas to provide stunning sea views.

    MSC Seashore Stats
  • Length: 339 m
  • Beam: 41 m
  • Gross Tonnage: 170412 GT
  • Passengers: 4560
  • Crew: 1648
  • Cruise Line: MSC Cruises
  • 24. Odyssey Of The Seas

    Odyssey of the Seas Lit up at night

    Odyssey of the Seas is a Quantum Ultra-class cruise ship operated by Royal Caribbean International. Launched in 2021, the ship is among the most technologically advanced and innovative vessels in the Royal Caribbean fleet. It has a passenger capacity of around 3,844 at double occupancy and a full capacity of over 4,805, with a length of 1,138 feet and a gross tonnage of 169,000.

    In addition to its impressive size and capacity, the Odyssey of the Seas is replete with innovative features and amenities designed to provide an unparalleled cruise experience. The ship features the iconic North Star observation capsule that gives guests a panoramic view of the sea from over 300 feet above the water. It also includes SeaPlex, the largest indoor activity space at sea, featuring bumper cars, a trapeze school, and a roller skating rink.

    For dining and entertainment, the ship offers numerous restaurants and bars with a wide range of culinary options. It includes the Two70 venue, which blends technology with entertainment, showcasing stunning panoramic sea views that transform into high-tech entertainment spaces in the evenings. The ship also has a state-of-the-art fitness center and spa, swimming pools, and a casino, among other amenities.

    Odyssey Of The Seas Stats
  • Length: 360 m
  • Beam: 64 m
  • Gross Tonnage: 169300 GT
  • Passengers: 3844
  • Crew: 1300
  • Cruise Line: Royal Caribbean International
  • 25. Norwegian Encore

    Norwegian Encore sailing in open ocean

    The Norwegian Encore is a Breakaway Plus-class cruise ship operated by Norwegian Cruise Line. It is the final ship of this class, with a gross tonnage of 169,116 GT, a length of 1,094 feet, and a guest capacity of 3,998 at double occupancy. The ship was constructed by Meyer Werft in Germany and made its maiden voyage in November 2019.

    Norwegian Encore is celebrated for its innovative features and an extensive array of amenities designed to provide an extraordinary vacation experience. The ship boasts a two-level go-kart track spanning the top deck. It also features an open-air laser tag arena with augmented reality elements inspired by the lost city of Atlantis.

    For entertainment, Norwegian Encore offers the Tony Award®-winning Broadway musical, “Kinky Boots,” and the sensational high-energy “Choir of Man” show. Dining options are aplenty, ranging from fine dining experiences to casual eateries featuring a variety of international cuisines. The ship also houses the Galaxy Pavilion, a virtual reality complex with interactive games, and a large water park.

    Norwegian Encore Stats
  • Length: 326 m
  • Beam: 42 m
  • Gross Tonnage: 169116 GT
  • Passengers: 3998
  • Crew: 1735
  • Cruise Line: Norwegian Cruise Line
  • Marcello De Lio
    Marcello De Lio

    Marcello's been cruising since he was 12 years old. He loves the freedom that cruising provides, meeting new people, and exploring amazing new ships. Marcello created High Seas Cruising to share his passion for cruising and travel with readers and grow a community of passionate voyagers.

    Leave a Reply

    Your email address will not be published. Required fields are marked *