largest cruise ships being built

The World's Largest Cruise Ship Is Coming in January—Here's What It's Like Inside

By Jessica Puckett

The biggest thing to ever hit cruising is coming in January 2024, when Royal Caribbean’s Icon of the Seas —which will be the largest cruise ship in the world —will debut to passengers for the first time.

With capacity for nearly 10,000 passengers and crew, Icon of the Seas is billed as part all-inclusive resort, part theme park, and a massive destination unto itself . Clocking in at 250,380 gross tons and measuring nearly a quarter mile long (1,198 feet to be exact), the vast ship will sport a total of 20 decks, 18 of which will be accessible to guests.

The ship will be divided into eight different “neighborhoods,” each with their own distinct atmospheres, dining options, and activities. “ Icon of the Seas is truly what we call a white paper ship,” Anna Drescher, manager of architectural design, new building and innovation for Royal Caribbean group, said in a video statement . “The reason that we call it that is we start with a blank sheet of sketch paper, so it truly is starting fresh.”

In June 2023, the ship hit a major milestone when it completed its first sea trials outside the shipyard in Turku, Finland. Next up is the colossal new ship’s first voyage, slated to depart on January 27, 2024. It will sail roundtrip from Miami to the Caribbean islands of St. Kitts, St. Thomas, and the Bahamas.

The ship's typical seven-day itineraries include three at-sea days, so passengers have time to fully enjoy the endless choices of amenities on board. “We want guests to walk up to the ship and just have this moment of: I can’t believe that’s where I’m going ,” said Jennifer Goswami, the line’s senior manager of product development.

Here's a look at the enormous scale of the new ship and what to expect on board.

When it begins sailing, the Icon of the Seas will offer a total of 2,805 staterooms that can hold 5,610 passengers at double occupancy, or a maximum of 7,600 guests. Passengers can choose from a whopping 28 different room types, including Sunset Suites with wraparound balconies and Family Infinite Balcony staterooms with bunkbeds fit for a family of up to six.

The largest suite on board will be the three-story, 1,772-square-foot “Ultimate Family Townhouse,” which comes with its own movie theater, ping-pong table, karaoke, and a slide between floors. It can sleep up to eight people and costs approximately $75,000 per week.

Among the eight "neighborhoods," or sections of the ship with distinct ambiance, are Central Park, which offers greenery and sidewalk cafes, and The Hideaway, which aims for a European beach club aesthetic. There's also The Suite Neighborhood, Surfside, Thrill Island, Chill Island, The Royal Promenade, and the Aquadome.

The ship's 2,350 crew members will also get their own neighborhood, complete with amenities like a gaming room and hair salon.

Another superlative for Icon will be sporting the largest waterpark at sea. The park, called Category 6, features six different record-breaking waterslides, including the tallest onboard waterslide. There will also be a free-fall slide, plus a raft-style slide for four passengers to ride together.

Harrison Pierce

María Casbas

CNT Editors

Seven pools and nine whirlpools will be located throughout the ship, including the first infinity pool on a cruise ship to be suspended in the air. The Royal Bay pool, located on the 15th deck, will break the record for largest pool at sea, holding an astounding 40,000 gallons of water.

Across the towering vessel, there'll be more than 20 food venues and 15 bars and nightlife experiences, including a sweeping three-level main dining room.

Among the options for grabbing a drink will be the line's first onboard swim-up bar, a walk-up Champagne bar, and a bar specializing in coffee cocktails like espresso martinis.

On the entertainment front, Royal Caribbean has hired 75 performers to titillate guests across three cavernous theaters. The Absolute Zero ice arena will feature shows with Olympic-level skaters, while the AquaTheater will combine the talents of divers, robots, and skateboarders.

In the Royal Theater, a 16-piece orchestra (the largest one at sea), will accompany shows like the Wizard of Oz.

In smaller venues throughout the ship, like the dueling piano bar, 50 live musicians and comedians will perform each night, making it possible for every type of passenger to find something that fits their style.

• CruiseMapper
• Ships and Lines

Newest Cruise Ships

Find here the answer to which is the newest cruise ships currently under construction or on order. You can jump directly to the lists of new vessels on order / under construction (2021-2028) , as well as new riverboats (2021-2026) and new cruiseferries (2021-2027).

Here you'll find them all - from small to big to the ever-largest passenger ships from the fleets of RCG-Royal Caribbean, Carnival Corporation, NCLH-Norwegian and MSC. We list also all the major cruise lines' orders for building new vessels (with GT/volume between ~2000 and ~240000 tons), with information on their design , building cost , passenger capacity , and builders/yards .

Newest cruise vessels on order (2021-2028 deliveries)

NEW companies and brands on the market are Resorts World Cruises (2022/Genting), Virgin Voyages (2017), Ritz-Carlton (2017), Norwegian Yacht Voyages (2017), Adora Cruises/CSSC Carnival China (2018), Alteza Cruises (2017), Anteros Cruises (2017), Zen Cruises (2018/Essel Group India), Abou Merhi Cruises Lebanon (2018), Well Star Travel Cruise China (2018), Blue World Voyages (2019), Mystic Cruises USA (2019), TUI River Cruises (2019), Cruise Retirement (2019), Style Cruise China (2019), Diamond Cruise China (2020), Ocean Residences (2020), Storylines Residences (2020), Arctic Cruise Line (2021), Aroya Cruise Saudi (2021), Selectum Blu Cruises (2021/ANEX Tours Turkey).

The largest "small ship" companies are Viking and Ponant .

The industry's estimated revenue for 2018 was USD 40 billion, with projected growth to USD 59 billion (2027). In terms of source passengers, the largest markets are North America (50+%) and Europe (30+%). The fastest-growing market is luxury cruising, with the largest companies being Viking Ocean, Viking Expeditions, Silversea, MSC Expeditions (separate fleet), Ponant, Hapag-Lloyd, RSSC-Regent.

In 2022, the ship orders with deliveries planned in 2023-2028 were 72 (units) amounting to ~USD/EUR 46 billion.

In 2023, the number of cruise vessels (ordered and scheduled for launches in 2023-2028) was 56 (~USD/EUR 39 billion, average cost per unit ~USD/EUR 680M), including 19 (2023-inaugurated), 10 (2024/30,000+ berths), 19 (2025), and 20 (2026-2028).

By 2028, the new vessels (2023-28) add to the global fleet 129000+ berths.

New MSC ships 2017-2027

On March 20, 2014, MSC and STX France signed in Paris a letter of intent for building 2 new mega-liners with scheduled deliveries in 2017 (Meraviglia) and 2019 (Bellissima), each with GT 167,600 tons (slightly smaller than Quantum-class / 167,800 GT), but with bigger passenger capacity - 4500 (vs 4180).

In February 2016, MSC ordered two "Meraviglia Plus" liners with max capacity 6300 passengers (200 more cabins, 16 m longer compared to Meraviglia-Class). The order made MSC France's largest private foreign investor - with USD 8,6+ billion in export contracts over a 5-year period. On April 6, 2016, MSC signed with STX France for the construction of up to four World-Class vessels - LNG-powered , with GT tonnage 250,000 tons and max passenger capacity 6800.

In November 2017 MSC ordered 2x "Seaside EVO" class ships from Fincantieri (contract value EUR 1,8 billion). The new ships are bigger (16 m longer, 17,330 GT tons heavier, with 200 more cabins / 467 more passengers) in comparison to Seaview and Seaside. Newbuilds' deliveries were scheduled for 2021 (Seashore) and 2022 (Seascape). With Seaside EVO, MSC had a total investment of EUR 10,5 billion into 12 new vessels with scheduled deliveries by 2026. The first of four "World Class" vessels will be delivered in 2022.

In October 2018, MSC and Fincantieri signed an MoA for 4x ultra-luxury expedition (total value EUR 2+ billion). The newbuilds (EXPLORA-class/first unit delivery in 2023-Q3) have GT tonnage 64,000 and 500 cabins. The remaining 3 units are due to enter service one per year (2024-2025-2026).

In 2023, MSC's fleet had 21 liners.

New Carnival Corporation ships 2019-2024

In March 2015 Carnival Corporation ordered 9 vessels to be built by two different companies. Fincantieri SpA (Italy) constructs 5 units (at Monfalcone and Marghera yards), while Meyer Werft BmbH constructs the other 4 units in Germany (Papenburg) and Finland (Turku).

All new liners feature next-generation designs and marine architecture and technologies, each designed accordingly to the brand it serves (Costa, AIDA, Princess, Holland America, CCL-Carnival).

In 2019 was established CSSC Carnival China/ADORA CRUISES - a Chinese-American joint venture company with a separate fleet of 2x ex-Costa ships (Atlantica, Mediterranea) plus 2 newbuilds (2023, 2024).

The next video is about Ponant's new Explorer-Class ships.

New cruise ships (2021-2028) under construction and on order

New riverboats 2021-2026, new river cruise ships 2021-2026.

This survey shows the list of the newest river cruise ships and luxury boats. These are all newbuilds, so the list excludes boats that are chartered to other companies (thus only refurbished and renamed).

For all riverboats tracked at CruiseMapper, you can visit our River Cruises hub where are listed all river shipping companies and their fleets.

New cruiseferries (2021-2027)

Here are listed large-sized new cruise ferries built between 2010-2024. RoRo vessels as types can be ferries (car and passenger ships), cruise ferries (with passenger cabins), cargo ships and freight barges.

At the following taglink are listed all CruiseMapper's news related to new ships .

The World’s Largest Cruise Ship Is Nearly 1,200 Feet Long

Scheduled to debut in January, the vessel can accommodate 5,600 guests and 2,350 crew members

Daily Correspondent

The world’s largest cruise ship is almost ready to set sail.

Royal Caribbean’s massive new ship, Icon of the Seas , passed its inaugural round of sea trials with flying colors, bringing it one step closer to hitting the open ocean with passengers, the cruise line  announced late last month. If all goes as planned, the record-breaking vessel will begin sailing in the Caribbean in January 2024.

Just how big is Icon of the Seas ? Really big. As Jalopnik ’s Ryan Erik King writes, it’s the size of five Titantics. More specifically, Icon of the Seas measures 1,198 feet long—nearly a quarter of a mile—and has a gross tonnage of 250,800. All that space means it can accommodate 5,600 guests and 2,350 crew members.

The cruise line is positioning the vessel as “the ultimate family vacation,” as CEO Michael Bayley told reporters earlier this year, per  CNN ’s Maureen O’Hare.

“When you step back and look at all the energy and time that has gone into creating this ship, it is mind-blowing,” he added.

The previous world’s largest cruise ship was also a Royal Caribbean vessel, Wonder of the Seas , which spanned 1,188 feet long and featured 18 decks.

Crews in Turku, Finland, began work on Icon of the Seas in 2021. Last month, the vessel sailed the open ocean for the first time, as staffers spent four days testing the main engines, hull, brakes, steering system and other components. They also measured noise and vibration levels. 

The vessel will undergo another round of sea trials later this year before officially launching in Miami early next year, according to Royal Caribbean. Icon of the Seas will primarily take cruisers to the islands of the eastern and western Caribbean on seven-night itineraries.

With progress on Icon of the Seas moving along, Royal Caribbean has already started building another large “icon class” ship. The cruise line expects that unnamed vessel to launch in 2025, per a  statement .

Icon of the Seas has 20 total decks, 7 swimming pools and 8 “neighborhoods,” or distinct areas with entertainment and dining. Another noteworthy feature is Category 6, which will be the largest waterpark at sea when Icon of the Seas sets sail.

The ship will be equipped with a special grooming robot that will clean the hull whenever it’s in port to help reduce drag and improve fuel efficiency by 3 to 4 percent, reports  TTG Media ’s Charlotte Cullinan.

Icon of the Seas will also be the first ship in the cruise line’s fleet to run on liquefied natural gas and  fuel cells , which are similar to batteries but do not need to be recharged. Water is the main byproduct of fuel cells—which combine oxygen and hydrogen to produce energy—which should help the ship reduce its greenhouse gas emissions.

Liquefied natural gas , meanwhile, is a controversial energy source that involves cooling natural gas to a liquid state to make it easier to transport. The liquid version is “actually worse than ordinary gas,” writes the  Natural Resources Defense Council . “The energy required to chill, ship and regasify the fossil fuel makes it far more carbon-intensive and increases the potential for leakage of dangerous methane,” according to the organization.

Royal Caribbean’s leaders say they view liquified natural gas as a “ transitional fue l,” and that they hope to continue to  reduce the environmental impact of their ships moving forward. 

"[Liquefied natural gas] is about 20-30 percent better for the environment [than heavy fuel oil], but it’s still not going to be the solution,” Bayley tells TTG Media . “We don’t know the answer, but the whole industry is working towards the answer.”

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Sarah Kuta | READ MORE

Sarah Kuta is a writer and editor based in Longmont, Colorado. She covers history, science, travel, food and beverage, sustainability, economics and other topics.

Why this cruise line you've barely heard of is ordering 6 giant new ships

The rapid expansion of MSC Cruises will continue through at least 2030.

The Europe-based megaship operator announced on Monday a trio of shipyard deals that will bring it at least six more vessels over the next few years — on top of six already on order.

The deals, with the giant Chantiers de l'Atlantique shipyard in Saint-Nazaire, France, included a firm contract for the construction of a third and fourth ship in the line's World Class series, to be delivered in 2025 and 2027, respectively.

At 205,700 tons, the World Class vessels will be among the biggest cruise ships ever built and have room for up to 6,761 passengers a piece. The first ship in the series already is under construction at the shipyard and due for delivery in 2022. A second vessel in the series has been on order for delivery in 2024.

For more TPG news delivered each morning to your inbox, sign up for our daily newsletter .

The trio of deals announced Monday also included a so-called Memorandum of Understanding between MSC Cruises and Chantiers de l'Atlantique to develop yet another new class of vessels .

MSC Cruises offered few details of the ships in the new series other than to say there would be four of them, and the total cost of the series would come to around $4.4 billion. Such a price tag suggests the ships in the new series will be quite large.

The third deal announced Monday was a Memorandum of Understanding to develop a second new class of vessels that MSC Cruises said would be innovative in its design. The line offered almost no details about the project other than to say the line and shipyard would "explore opportunities that wind power and other advanced technologies could bring to passenger shipping."

MSC Cruises also didn't say when the ships in the two new series would arrive. But, in a statement accompanying the announcement, MSC Cruises executive chairman Pierfrancesco Vago suggested the vessels would be in service by 2030.

"The three agreements signed today extend our investment plan up to 2030," Vago said. "They stem from an exceptional partnership, with Chantiers de l'Atlantique, that has already delivered 15 highly-innovative cruise ships over the past two decades and will see many more vessels come to life at Saint-Nazaire's docks in the next 10 years."

MSC Cruises currently has 17 ships in its fleet.

The agreements extend what has been one of the fastest-growing expansions of a cruise line in years. As recently as early 2017, MSC Cruises had just 12 ships in operation. At the time, the line promised to triple its capacity within a decade.

While it's well known to Europeans, MSC Cruises has far less name recognition among Americans than such big U.S.-based lines as Royal Caribbean and Carnival Cruise Line . But the line has been moving aggressively to change that.

As part of its expansion, MSC Cruises has been rapidly building its footprint in North America in an effort to woo more Americans. In 2017, MSC Cruises only had a single vessel based in North America. It now has two vessels based year-round in Miami and two more sailing out of the port on a seasonal basis. Later this year, it'll begin its first sailings from Tampa . It has scheduled voyages from the New York City -area for later this year and in 2021, too.

All of the North America-based ships are marketed heavily to Americans.

Founded in 1989 in Naples, Italy, and now based in Switzerland, MSC Cruises in recent years has been building big, resort-like vessels that compete with the biggest ships from the likes of Royal Caribbean and Norwegian Cruise Line. It currently operates three of the 10 biggest cruise ships in the world.

With the addition of five major new vessels since early 2017, MSC Cruises is now the world's fourth-largest cruise line by number of passengers carried, behind only Carnival, Royal Caribbean and Norwegian. It's bigger than such well-known U.S.-based brands as Princess Cruises , Celebrity Cruises and Holland America Line .

Related: How to plan a cruise with points and miles

The new World Class vessels that MSC Cruises has in the works will be the biggest vessels ever operated by a Europe-based cruise line, but not quite the biggest ships in the world. Royal Caribbean's record-breaking Oasis Class vessels, including the recently unveiled Symphony of the Seas , still will be a tad bigger.

MSC Cruises is a division of privately owned MSC Group, one of the world's biggest shipping companies. In addition to expanding its MSC Cruises brand, the MSC Group is investing an additional $2.2 billion into an as-yet-unnamed new luxury cruise brand. The new brand, which will operate yacht-like vessels, is scheduled to debut in 2023. Four ships for the brand are on order.

The Chantiers de l'Atlantique shipyard has built some of the world's most famous cruise ships, including Symphony of the Seas and Cunard's Queen Mary 2. It's one of the few shipyards in the world capable of building today's biggest cruise ships.

Planning a cruise for 2020? Check out these articles:

• The 8 most exciting new cruise ships of 2020
• The 6 best cruise lines for solo travelers
• What to ask for when things go wrong on your cruise ship
• Cruise line showdown: Comparing Carnival, Disney and Royal Caribbean for families
• 5 cruise lines to try if you just can't stand being around kids on vacation

Protect Your Trip »

The 21 largest cruise ships in the world.

Book your next cruise vacation on one of these floating megaresorts.

The Largest Cruise Ships in the World

Courtesy of Royal Caribbean International

With every year comes bigger and grander cruise ships.

Just when you think cruise ships can't get any larger, a major cruise line unveils yet another longer, taller and grander state-of-the-art vessel – with the capacity to carry the population of a small town. To put the size of today's megaships into perspective: They often stretch three times longer than a 120-yard football field, and some feature nearly two dozen decks or measure more than 215 feet wide.

So, if you're looking for a vacation aboard a large-scale vessel, consider booking a voyage on one of the biggest cruise ships in the world. With cutting-edge technology and entertainment, world-class dining, and endless attractions and activities for cruisers of all ages, you may not even want to leave the ship. Here are the biggest cruise ships, arranged by gross tonnage.

• 1. Royal Caribbean Icon of the Seas
• 2. Royal Caribbean Utopia of the Seas
• 3. Royal Caribbean Wonder of the Seas
• 4. Royal Caribbean Symphony of the Seas
• 5. Royal Caribbean Harmony of the Seas
• 6. Royal Caribbean Oasis of the Seas
• 7. Royal Caribbean Allure of the Seas
• 8. MSC World Europa
• 9. Costa Smeralda
• 10. Costa Toscana
• 11. P&O Cruises Arvia
• 12. AIDAcosma
• 13. P&O Cruises Iona
• 14. AIDAnova
• 15. Carnival Jubilee
• 16. Carnival Celebration
• 17. MSC Euribia
• 18. MSC Virtuosa
• 19. Carnival Mardi Gras
• 20. MSC Meraviglia
• 21. Norwegian Encore

Find your perfect cruise

Royal Caribbean Icon of the Seas

Length: 1,198 feet

Width: 213 feet

Gross tons: 250,800

Maximum number of passengers: 7,600

Icon of the Seas will be the largest cruise ship afloat when it debuts in January 2024. The next-level megaship is Royal Caribbean 's first Icon-class vessel and the first of three ships powered by liquefied natural gas, or LNG, which is considered a more sustainable alternative to other fuel options. The ship will have 2,805 staterooms and carry up to 2,350 crew. There's no end to the fun with eight unique neighborhoods, including the new Surfside: a stay-all-day space designed specifically for families.

Other features on the ship include seven pools, nine whirlpools and six record-breaking waterslides. There are also more than 20 new dining venues, such as the swanky Empire Supper Club, which features an eight-course tasting menu; the AquaDome Market, the line's first food hall; and sushi restaurant Izumi in the Park. Cruisers will also find other international cuisine, including Japanese, Mexican and Italian fare, as well as The Lemon Post, the Surfside Eatery and Pier 7 in the Surfside neighborhood.

Read: The Newest Royal Caribbean Ships

Royal Caribbean Utopia of the Seas

Length: 1,188 feet

Width: 211 feet

Gross tons: 236,860

Maximum passengers: 6,788

Royal Caribbean's first LNG-powered Oasis-class ship will sail its debut voyage in July 2024. The new ship will have 2,834 staterooms and up to 2,290 crew members, as well as eight neighborhoods to keep passengers entertained. Ten complimentary dining venues include the line's new food truck concept, The Spare Tire, which serves up handheld eats on the pool deck. The ship will also feature sloping beach-entry and resort-style pools, plus three Lime & Coconut bars on the outdoor deck.

In total, there are more than 40 dining options, bars and lounges on Utopia of the Seas. Many of Royal Caribbean's specialty dining and bar favorites are returning, such as Chops Grille, Giovanni's Italian Kitchen & Wine Bar, Rising Tide Bar and Vue Bar. Guests will also find familiar entertainment offerings with rock climbing walls, the AquaTheater, Splashaway Bay, laser tag, mini-golf, the Sports Court, Studio B and much more. With two casinos, five pools and a visit to private island Perfect Day at CocoCay, you'll never run out of things to do.

Read: The Top New Cruise Ships

Royal Caribbean Wonder of the Seas

Michel Verdure | Courtesy of Royal Caribbean International

Gross tons: 235,600

Maximum passengers: 7,084

Royal Caribbean's current largest ship at sea, Wonder of the Seas , first set sail in March 2022. The Oasis-class vessel has 2,867 staterooms and carries as many as 2,204 crew members. While you may get lost on this ship, you'll never be bored. Features include eight unique neighborhoods – such as Central Park, the Boardwalk, and the new Suite Class neighborhood, an exclusive space for suite guests.

Take advantage of the AquaTheater, an outdoor live entertainment venue with a 30-foot diving platform and incredible ocean views. Wonder Playscape is an underwater-themed outdoor space for kids filled with slides, climbing walls, games and more. You can also enjoy a few of Royal Caribbean's Oasis-class favorites, such as the FlowRider surf simulator, the rock climbing wall or laser tag at the Battle for Planet Z. If you dare, head into the Ultimate Abyss: Billed as the tallest waterslide at sea, it towers 150 feet above sea level and features an exhilarating 13-second ride through 10 stories of dark, winding tunnels.

When hunger strikes, dine at your pick of more than 20 complimentary and specialty restaurants, including the new Mason Jar Southern Restaurant & Bar. If you're craving a cold beer, a cocktail or a cup of Starbucks coffee, you'll have roughly a dozen bars and lounges at your disposal.

Read:  The Top Party Cruises

Royal Caribbean Symphony of the Seas

Width: 215.5 feet

Gross tons: 228,081

Maximum passengers: 6,680

Royal Caribbean's Symphony of the Seas , another Oasis-class ship, debuted in April 2018. This ship features 2,759 passenger staterooms and accommodates 2,200 crew members. There are seven distinct neighborhoods, four pools, roughly 20 restaurants (about half of which are specialty venues), and about a dozen bars and lounges. The ship even boasts two robotic bartenders that whip up drinks at the Bionic Bar.

Adults can enjoy Broadway-style shows in the onboard theaters and major international sports games at Playmakers Sports Bar & Arcade. Meanwhile, kids can cool down at the Splashaway Bay water park, soar on a zip line nine decks high through the Boardwalk neighborhood, try out rock climbing or attend a show at the AquaTheater.

Read:  Royal Caribbean vs. Carnival

Royal Caribbean Harmony of the Seas

Gross tons: 226,963

Maximum passengers: 6,687

Another Oasis-class ship, Royal Caribbean's Harmony of the Seas has been sailing since May 2016. The vessel features 2,747 staterooms and up to 2,200 crew members. Cruisers have plenty of places to dine thanks to eight complimentary venues – including the main dining room and Windjammer Marketplace, a globally inspired buffet – as well as nine specialty restaurants serving everything from burgers and shakes to Italian fare. The Boardwalk, one of the ship's seven neighborhoods, is a favorite spot for cruisers; it contains casual eateries, retail shops and carnival games.

Harmony of the Seas also has Splashaway Bay, the Ultimate Abyss waterslide and a trio of slides called The Perfect Storm. In the evening, don't miss a pre-dinner cocktail at the Rising Tide Bar, which offers a ride between the Central Park neighborhood and the Royal Promenade with dazzling skylight views. Sit back and sip your drink while the entire bar slowly floats between the decks.

Royal Caribbean Oasis of the Seas

Simon Brooke | Courtesy of Royal Caribbean International

Length: 1,187 feet

Width: 215 feet

Gross tons: 226,838

Maximum passengers: 6,771

Royal Caribbean's Oasis of the Seas was the largest cruise ship in the world when it was launched in 2009. The line's debut Oasis-class ship is nearly five times bigger than the Titanic by gross tonnage; it has 2,801 staterooms and carries 2,109 crew members.

Oasis of the Seas was reimagined in 2019, with many added amenities that are on newer Oasis-class ships, such as FlowRider simulators, the Perfect Storm waterslides, the Ultimate Abyss and Playmakers Sports Bar & Arcade. Across the ship's seven distinct neighborhoods, you'll also find state-of-the-art technology such as VOOM, billed as the fastest internet connection on the high seas – plus exciting live performances and theater productions, laser tag, escape rooms and more.

Royal Caribbean Allure of the Seas

Gross tons: 225,282

Maximum passengers: 6,826

Embarking for the first time in 2010, Allure of the Seas was Royal Caribbean's second Oasis-class vessel. The ship underwent a refurbishment in 2015. Allure of the Seas has 2,748 staterooms and 2,054 crew. Onboard highlights include seven neighborhoods, four pools, and several whirlpools and hot tubs, plus more than 20 dining venues and too many bars and lounges to count.

There are also plenty of entertainment options for guests of all ages, including an ice skating rink, the Sports Court, a nine-deck-high zip line, two rock climbing walls and two FlowRider simulators (a Royal Caribbean favorite). Kids will especially enjoy the interactive H2O Zone Water Park. Adults on this ship will appreciate Broadway productions like "Mamma Mia!," aerial acrobatic performances in Oceanaria (an original AquaTheater production) and '70s disco dance parties. If you find yourself on board for business reasons, rest assured that the ship's conference facilities can host as many as 1,394 guests.

Find a Royal Caribbean cruise on GoToSea.

MSC World Europa

Courtesy of MSC Cruises

Length: 1,093 feet

Width: 154 feet

Gross tons: 215,863

Maximum passengers: 6,762

MSC World Europa was one of the most anticipated new cruise ships when it launched in December 2022 as the first vessel in the line's MSC World-class fleet. It's also the first LNG-propelled ship by MSC Cruises , reaching a maximum cruising speed of 22.7 knots.

The ship's futuristic interior and exterior design features a 341-foot-long promenade. Half the promenade is covered with the Meraviglia-class LED sky screens, while the other half is open-air and offers ocean views. MSC World Europa features 2,626 staterooms and can house 2,138 crew members. As a special touch, each passenger deck is named after an international city, including London, Paris, Lisbon and Rome.

The ship is divided into distinct areas, with a quiet zen district for adults and a family zone that has bumper cars and roller skating. At the fleet's largest onboard water park, younger cruisers will find a twisty, stainless steel tunnel slide towering 11 decks high at the center of the ship. Luna Park Arena, the ship's 300-seat multifunction entertainment venue, can accommodate almost any performance or event.

When you're exhausted from all of the action, grab a bite to eat at one of 13 restaurants or a drink at a selection of bars and cafes. Then, take time to relax and unwind with a signature treatment at the Balinese-inspired MSC Aurea Spa. For an all-inclusive VIP experience during your voyage, book stateroom accommodations in the MSC Yacht Club. This exclusive part of the ship boasts premium suites, a separate pool, a private restaurant and lounge, butler service, and other amenities.

Costa Smeralda

Courtesy of Costa Cruises

Length: 1,106 feet

Width: 138 feet

Gross tons: 185,000

Maximum passengers: 6,554

Costa Smeralda was the first of the two Excellence-class vessels in the Costa Cruises fleet. The vessel debuted in 2019 as the Italian cruise line's largest ship to date. It was also the line's first vessel to use LNG power at sea and in port. The ship has 2,612 staterooms and can carry as many as 1,678 crew members.

Cruisers will never go hungry or thirsty, thanks to the 11 restaurants and snack bars plus 19 bars and lounges on Smeralda . One of the most notable dining venues on board is Archipelago, which serves innovative cuisine created by three world-renowned chefs. If you're interested in culinary pursuits, join other passengers for a cooking class at sea in the Food LAB. When it comes to entertainment, centrally located Colosseo – modeled after the piazzas across Italy – is the place to go for socializing and live performances. What's more, the ship also has 13 pools and hot tubs, an aqua park, the Beauty Spa Solemio, and the Squok Club for kids ages 3 to 11.

Costa Toscana

Costa Toscana, Costa Cruises' newest flagship and the second Excellence-class vessel in the fleet, set sail on its debut voyage in March 2022. Similar in size and passenger capacity to Costa Smeralda, Toscana is also LNG-powered. This vessel has 2,663 staterooms, and there can be up to 1,678 crew members on board.

Similar to Smeralda, Colosseo is the centerpiece of Toscana; you'll find live entertainment and themed bars in this area. There are 11 restaurants and snack bars plus 19 bars and lounges on the ship. For a refreshing aperitif with a view, head to the Aperol Spritz Bar, which features special beach cocktails. Another dining highlight is Sushino at Costa, the line's new sushi bistro. After dinner, take in unparalleled views of the sea along the Volare Skywalk, the highest point of the ship, which towers more than 200 feet above sea level.

Explore Costa Cruises deals on GoToSea.

P&O Cruises Arvia

Courtesy of P&O Cruises

Length: 1,130 feet

Maximum passengers: 5,200

Arvia joined the P&O fleet as sister ship to Iona in December 2022. It is also LNG-powered, has 2,614 cabins and carries up to 1,800 crew. The family-friendly ship offers guests many firsts, including Altitude, a new activity area with an escape room, a high-ropes experience, the Splash Valley aqua zone, the Sports Arena and much more.

Arvia has 30 bars and restaurants. New dining venues include the American-inspired 6th Street Diner and Green & Co. feat. Mizuhana, which focuses on sushi and plant-based dishes. For entertainment, plan to see the line's production of "The Official Take That Musical," an adaptation of London West End musical "The Band." Guests can also head to the dome beneath the SkyDome retractable roof for live performances, aerial displays, movies on the giant SeaScreen and DJ parties under the starry skies.

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Courtesy of AIDA Cruises

Gross tons: 184,600

Maximum passengers: 6,654

The sister ship to AIDAnova, AIDAcosma set sail in early 2022. The partly LNG-powered AIDA Cruises vessel has 2,732 staterooms and the capacity for up to around 1,500 crew members. With 17 restaurants and 23 bars and cafes, AIDAcosma offers passengers a seemingly endless number of venues to dine and imbibe. Other onboard attractions include a four-deck outdoor area, complete with an infinity pool and an expansive area for sunbathing; an indoor playground with a bouldering wall and ropes course; the Body & Soul Spa; and a 360-degree stage at the Theatrium.

P&O Cruises Iona

Length: 1,129 feet

Gross tons: 184,000

P&O Cruises' Iona, which launched in spring 2021, has the distinction of being the first LNG-powered British cruise ship. The family-friendly vessel has 2,614 cabins and carries 1,800 crew members. Iona's top features include the two-story SkyDome, a gin distillery, four pools, 10 entertainment venues, and 30 restaurants and bars offering a wide variety of food and beverage options.

With selections ranging from casual eateries to gelaterias to Indian- and British-inspired cuisine at Sindhu, you won't get bored with the restaurant choices. For an especially unique meal, dine and sip wine while watching aerial performances in the Grand Atrium at The Glass House. Or, enjoy dinner at The Limelight Club, an adults-only supper club venue featuring vocal performances and other live music. After dinner, check out the entertainment around the ship, including aerial productions in the Grand Atrium, guest and crew shows in Headliners, late night dancing in The Club House, and performances in partnership with the entertainment company Creativiva in the SkyDome.

Gross tons: 183,900

When German line AIDA Cruises' first Helios-class ship, AIDAnova, debuted in December 2018, it was the first LNG-powered cruise ship in the world. The ship is equipped with 2,626 staterooms, including the two-deck Penthouse Suite, and carries around 1,500 crew members. You won't miss this ship when it's docked in port: It features the line's signature exterior design, with bold red lips at the ship's bow and blue-and-yellow eyes on the port and starboard sides.

While on board, passengers can check out 17 restaurants, along with 23 bars and lounges; party the night away at the Beach Club; and take in live performances on the 360-degree stage in the Theatrium. When it's time to relax, head to the Body & Soul Spa, where you can book a massage, spend time in one of the hot tubs or saunas, take a dip in the private pool, and chill out on the private spa sun deck.

Carnival Jubilee

Width: 137 feet

Gross tons: 183,521

Maximum passengers: 6,631

Carnival Jubilee, as sister ship to Carnival Celebration and Carnival Mardi Gras, will offer many of the same features and amenities as its two predecessors when it launches in December 2023. The new vessel will have 2,687 staterooms, 1,735 crew and six zones of fun. Currents and The Shores are new to Jubilee . Currents is inspired by the underworld of the ocean with mermaids and sea monsters; it's designed with new bars, restaurants, music venues and high-tech spaces, including a wave-shaped LED ceiling and six LED windows that virtually take guests under the sea. The Shores is all about the outdoors, inspired by beaches and boardwalks. Cruisers can grab a slice of pizza at Coastal Slice, a hot dog at Beach Buns and a cocktail at Marina Bar.

On Jubilee, you'll also find Carnival Cruise Line favorites such as BOLT, the first and fastest roller coaster at sea, as well as Waterworks, the onboard water park with twin racing slides, three spiraling slides and more. The line's "next-level fun" ship will also include familiar eateries and lounges like Shaquille O'Neal's Big Chicken, Guy's Pig & Anchor Bar-B-Que Smokehouse, Cucina del Capitano, Fahrenheit 555 Steakhouse and more.

Carnival Celebration

Courtesy of Carnival Cruise Line

Carnival Celebration sailed its inaugural cruise in November 2022. Carnival's second-newest ship at sea is LNG-powered and the second in the line's Excel class, with 2,687 staterooms and as many as 1,735 crew. Guests will find new attractions to enjoy on the ship, such as the partnership with the Kennedy Space Center at Space Cruisers: This program is designed for children ages 2 to 11 at Camp Ocean.

Adults can check out the new bar at Latitudes, which features specialty cocktails and outdoor scenery through the virtual windows. Celebration has a variety of complimentary dining venues, including Shaq's Big Chicken, Guy's Burger Joint and Mexican favorites at BlueIguana Cantina. There is also a selection of specialty restaurants like Emeril's Bistro 1397, Rudi's Seagrill, the Steakhouse and Bonsai Teppanyaki. For action and 360-degree views of the ocean from the top of the ship, take a spin around the track on the BOLT roller coaster.

Compare Carnival Cruises on GoToSea.

MSC Euribia

Length: 1,087 feet

Width: 141 feet

Gross tons: 181,541

Maximum passengers: 6,327

MSC Euribia, the newest MSC Cruises ship, debuted in June 2023. The line's second LNG-powered vessel – and the fifth Meraviglia-class ship – has 2,419 cabins and can carry as many as 1,711 crew members. The ship's hull features Alex Flämig's artwork "#SaveTheSea" to highlight the company's dedication to preserving the marine ecosystem.

On board Euribia , guests will find five pools and 11 dining venues, offering everything from sushi and teppanyaki to Latin American street food. There are also 21 bars and lounges, the MSC Aurea Spa, the Ocean Cay Aquapark, luxury retail shopping and more. Two additional highlights are the longest – and most impressive – LED Dome at Sea, which covers the ceiling of Galleria Euribia, and the reimagined Carousel Lounge. The beautiful, updated space features floor-to-ceiling windows, outdoor terraces and cozy seating to enjoy live entertainment, including performances by one of the largest big bands at sea.

MSC Virtuosa

Maximum passengers: 6,334

This vessel launched in 2021 as a sister ship to MSC Grandiosa , the line's other Meraviglia Plus-class ship. MSC Virtuosa has 2,421 staterooms and carries around 1,704 crew members. It offers cruisers 11 dining venues plus 21 bars and lounges. At the heart of the ship, Galleria Virtuosa houses the largest shopping area on a cruise ship, with more than 12,500 square feet of retail space. In this area, you'll also find entertainment venues, restaurants and cocktail bars. And don't forget to look up: An impressive LED dome, one of the longest at sea, spans the ceiling of the promenade.

Another highlight to check out during your voyage is the MSC Starship Club, which features Rob, the first humanoid robotic bartender on a cruise ship. The multilingual expert mixologist even tells jokes and will show you a dance move or two. After all the indoor fun, head outside for a cool dip in one of MSC Virtuosa's five pools or take a ride on the slide at the Savannah Aquapark.

Book an MSC Cruise on GoToSea.

Carnival Mardi Gras

Gross tons: 180,000

Maximum passengers: 6,465

One of Carnival Cruise Line's newest ships, Mardi Gras , debuted in July 2021. Its name honors the line's first ship, the TSS Mardi Gras, which launched in 1972. The original Mardi Gras was around 27,000 gross tons and 650 feet long – in contrast, the new Carnival Mardi Gras weighs more than six times as much and is nearly twice as long. This ship also holds the title as North America's first LNG-powered ship. It has 2,641 staterooms and holds up to 1,745 crew members.

Six themed areas each offer unique dining and entertainment experiences. For New Orleans -inspired cuisine, head to the French Quarter; there, you'll find Emeril's Bistro 1396 and The Brass Magnolia, a bar reminiscent of The Big Easy's jazz culture and Garden District. Don't miss one of the ship's top onboard attractions: the BOLT roller coaster, where riders can hit speeds of nearly 40 mph at 187 feet above sea level.

Read: The Top Themed Cruises

MSC Meraviglia

Courtesy of Port Miami for MSC Cruises

Length: 1,036 feet

Gross tons: 171,598

Maximum passengers: 5,655

MSC Cruises' Meraviglia first set sail in 2017 with an impressive 2,244 staterooms and the capacity to carry 1,536 crew members. A dozen restaurants offer a wide variety of cuisines, including a Spanish tapas bar with dishes created by a Michelin-starred chef, Japanese teppanyaki, Italian fare, fresh seafood, steaks and more. There are also 20 bars, lounges and cafes serving everything from Champagne and cocktails to ice cream and crepes.

The central highlight of the ship is Galleria Meraviglia, a 315-foot promenade with eateries, boutiques and evening parties. Nightly entertainment includes live performances and shows in the Broadway Theatre and the Carousel Lounge. Kids will find plenty to do, as well: There's an Aquapark, an F1 simulator, a flight simulator, LEGO play areas, bowling and more. When it's time to wind down, book a signature treatment at the MSC Aurea Spa.

Norwegian Encore

Length: 1,094 feet

Width: 136 feet

Gross tons: 169,116

Maximum passengers: 3,998 (double occupancy)

Norwegian Encore was built in 2019 as one of Norwegian Cruise Line 's Breakaway Plus-class ships. The vessel has 2,040 staterooms and carries 1,735 crew members. There are several complimentary culinary venues on board, including three main dining rooms, The Local Bar & Grill, the Garden Café buffet, and grab-and-go options. Specialty dining restaurants offer a variety of cuisines, from seafood to steak to Japanese teppanyaki.

When it's time for cocktail hour, 14 bars and lounges serve up everything from cold brews to fine wine and whiskey. For a pre-dinner option, head up to the Observation Lounge for panoramic ocean views. Norwegian Encore is also home to several entertainment venues featuring award-winning live shows and performances.

You'll find the most fun on the ship's top decks. First, head to the Encore Speedway race track, which takes thrill-seekers on a heart-pumping ride through high-speed curves extending 13 feet off the side of the ship. Also at the top of the vessel you'll find The Haven: Norwegian's exclusive "ship within a ship" concept boasts luxurious suites, villas and penthouses with balconies. These luxe accommodations include perks like 24-hour butler service, a concierge and a private sun deck.

Find a Norwegian Cruise Line cruise on GoToSea.

Frequently Asked Questions

The largest cruise ship currently in service is Royal Caribbean's Wonder of the Seas, at more than 235,000 gross tons. Icon of the Seas will become the largest cruise ship in the world at 250,000-plus gross tons after its launch, set for January 2024.

Carnival Jubilee, scheduled to debut in December 2023, and Carnival Celebration are the line's largest ships at 183,521 gross tons.

The line's largest ship is Disney Wish at about 144,000 gross tons. The vessel is 1,119 feet in length and 128 feet wide; it has 1,254 staterooms and carries up to 4,000 passengers and 1,555 crew.

Why Trust U.S. News Travel

Gwen Pratesi has been an avid cruiser since her early 20s. She has sailed on nearly every type of cruise ship built, including the newest megaships, paddle-wheelers on the Mississippi River, and an 18-stateroom river ship on the Mekong River in Vietnam and Cambodia. She has also cruised on a traditional masted sailing ship and on a small luxury expedition vessel in Antarctica crossing the notorious Drake Passage twice. She covers the travel and culinary industries for major publications including U.S. News & World Report.

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The biggest cruise ship in the world is being built

What will cruise directors think of next?

• Haley Otman
• June 9, 2017

Have you ever thought about taking a vacation with 7,000 of your closest friends? In just a few years, you’ll be able to. At that time, the world’s largest cruise ship will set sail, hosting a record number of guests.

MSC Cruises recently announced their order of two mega-ships. One will debut in 2022, and the other in 2024. “MSC Cruises’ World Class cruise ships will feature 2,760 cabins and a maximum occupancy of 6,850 guests, the highest passenger capacity in the global cruise fleet,” according to a press release . And the ship will be a whopping 330 meters long. Conde Nast Traveler calculates that this is almost as long as three football fields, and that it will hold about a hundred more guests than the leading cruise ships.

The ships will, of course, be outfitted with all of the latest cruise luxuries, which their customers expect. A different MSC ship, just unveiled this summer, includes amenities like an indoor promenade, water slides, a bowling alley and even a flight simulator, according to USA Today .

According to the cruise line, the look of the new World Class ships will be different than other cruise ships you’ve boarded. “The World Class’ futuristic ‘Y’ shape structure will enable panoramic sea views and increase the proportion of balcony cabins,” they wrote .

MSC Cruises are popular in the Mediterranean, South Africa and Brazil, they say , though they also offer sailings in the Caribbean, Northern Europe and other areas. You may have heard of MSC before as the provider of a forthcoming, buzzed-about 119-day itinerary . This “ World Cruise ” will allow travelers to see 49 stops in 32 countries. It leaves in January 2019 and will return in May.

This ship is just the latest innovation to the cruising industry. A different cruise provider, Ponant, recently shared its plans for underwater lounges . Guests will be able to check out the creatures swimming near the ship while sipping a drink on a sofa that vibrates to mimic the movements of the sea.

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The top 10 biggest cruise ships in the world

M odern cruise ships continue to grow in size, with the biggest cruise ship, the Icon of the Seas , launching at the start of this year, and her sister ship the Star of the Seas expected to surpass her in size.

Both of these ships are operated by Royal Caribbean International, which operates five of the ten largest cruise ships in the world. Carnival Corporation, arguably the biggest cruise company in the world, features three times on the list through its subsidiaries P&O Cruises and Costa Cruises.

All of the heaviest cruise ships in the world were built within the last 20 years, although the majority – six of the ten – were built within the last five years.

So, here are the top ten biggest cruise ships in the world, by gross tonnage. 

10. P&O Cruises MS Arvia : 185,581 gross tonnes

The MS Arvia is P&O Cruises’ fourth ship to be built by German shipyard Meyer Werft. Weighing in at 185,581 gross tonnes, the 345m (1,130-foot) Arvia is slightly larger than her sister ship, the MS Iona . The 20-deck ship is the largest ship commissioned for the British cruise market and has a maximum passenger capacity of 6,264 passengers, with 1,800 crew onboard. 

The ship is the second liquefied natural gas (LNG)-powered Excellence-class vessel for P&O, following the Iona . Arvia is powered by a 61,760kW LNG drive system, with a propulsion power of 37 megawatts. The LNG-powered propulsion system allows the vessel to sail at a maximum speed of 21.5 knots.

After being floated out in August 2022, the Arvia mainly operates itineraries around the Caribbean or the Mediterranean.

9. Costa Cruises – Costa Smeralda : 185,010 gross tonnes

The Costa Smeralda is the first LNG-powered vessel in the Costa Cruises fleet. With a gross tonnage of 185,010gt, the 20-deck Excellence-class ship measures 337m (1,106 feet) in length. The second LNG-powered cruise ship to enter operation in the world, she has a maximum capacity of 6,554 passengers with 1,646 crew and a service speed of 21.5 knots.

Construction of the Costa Smeralda began at the Meyer shipyard in Turku, Finland, in September 2017. Meyer Turku collaborated with the Meyer Werft Papenburg shipyard to develop and integrate the LNG propulsion plant for the ship. She is fitted with four 16-cylinder, Caterpillar MaK 16VM46DF engines, with 15.4 megawatts (20,710 horsepower) output per engine, resulting in a maximum power of  37 megawatts (50,000 horsepower).

The ship, which was named after the Emerald Coast of Sardinia, entered service in December 2019 , departing Savona on its maiden voyage in the Mediterranean, where it has sailed since.

8. Costa Cruises – Costa Toscana : 186,364 gross tonnes

The Costa Toscana is the sister ship of the Costa Smeralda and is also powered by LNG . measuring 337m (1,106 feet) long and weighing in at 186,364 gross tonnes, the Toscana has a maximum capacity of 6,338 passengers and 1,678 staff across her 20 decks.

Like her sister ship, the Toscana was also built at the Meyer shipyard in Finland, with construction completed in 2021. She is also powered by four MaK-Caterpillar engines, with a total power of 57.2 megawatts (76,706 horsepower), and two ABB Azipod motors , resulting in a service speed of 17 knots.

Named in homage to the Tuscany region of Italy, Costa Toscana mainly sails around the Mediterranean Sea but Costa Cruises has also used the ship to sail itineraries further afield, such as around Brazil and the UAE.

7. MSC Cruises – MSC World Europa : 215,863 gross tonnes

The only entry in the top ten from MSC Cruises, MSC World Europa measures 333m (1,094 feet) in length. With 215,863 gross tonnage, she can house more people than any other ship in the MSC fleet: up to 6,762 passengers across 2,633 cabins spread over 22 decks, in addition to 2,138 crew.

Built by Chantiers de l’Atlantique in Saint-Nazaire, France, the World Europa ’s LNG-power propulsion system was subcontracted to Finland-based Wärtsilä. Five LNG-powered, 14-cylinder Wartsila 46DF dual-fuel engines power the vessel, with a propulsion power of 44 megawatts ( 59,005 horsepower). She also features nitrogen oxide reduction (NOR) units, two Wartsila LNGPac fuel storage and supply systems, seven thrusters, and two fixed-pitch propellers. 

The MSC World Europa was floated out at the end of 2021 and was initially used as an accommodation vessel for fans attending the 2022 FIFA World Cup, with the ship berthed at Doha Port in Qatar during the tournament. Following the competition, the ship subsequently travelled several routes around the UAE, before sailing to the Mediterranean, where it has sailed itineraries since.

6. Royal Caribbean International – Allure of the Seas : 225,282 gross tonnes

The first of many entries on this list operated by Royal Caribbean, Allure of the Seas weighs in at 225,282 gross tonnes. Measuring 362m (1,187 feet), she is only 50mm (2 inches) longer than her sister ship the Oasis of the Seas . The Allure has a maximum capacity of 6,780 passengers and 2,200 crew across 18 decks.

Built at the Turku Shipyard in Finland, the Allure took two years to build , floating out in 2010. She features six Wärtsilä 46 diesel engines with a total power output of 97 megawatts (130,053 horsepower). It is propelled by three electric Azipod azimuth thrusters. The ship can travel at a cruising speed of 22 knots.

With a homeport of Galveston, Texas in the US, the Allure mainly serves itineraries around the Bahamas but she is scheduled to sail routes around the Mediterranean in 2025.

5. Royal Caribbean International – Oasis of the Seas : 226,838 gross tonnes

The oldest ship on this list, the Oasis of the Seas has been in service for over a decade. She was the biggest cruise ship at the time when floated out in 2009, with a gross tonnage of 226,838gt and a length of 360m (1,181 feet). The Oasis has a maximum capacity of 6,699 passengers and 2,181 staff across 18 decks.

The Oasis took two years to build at the Meyer shipyard in Turku, Finland, with the keel laid on 12 November 2007 and the ship arriving at her homeport of Port Everglades in Florida, US, on 13 November 2009.

The Oasis is powered by eight Wärtsilä V12 diesel engines, which generate 5.6 megawatts (7,500 horsepower) each, alongside four bow thrusters. The main propulsion system consists of three 20-megawatt (26,820 horsepower) electric Azipod motors, resulting in a combined propulsion power of 82 megawatts (109,964 horsepower) and a standard cruising speed of 23 knots.

The Oasis mainly operates routes around the Caribbean, but occasionally repositions to offer itineraries in the Mediterranean.

4. Royal Caribbean International – Harmony of the Seas : 226,963 gross tonnes

The third Oasis-class ship built by Royal Caribbean, Harmony of the Seas weighed in bigger than her existing sister ships at launch in 2016, with 226,963 gross tonnage, but she has since been surpassed by newer vessels. With a total length of 362m (1,188 feet), Harmony has a maximum capacity of 6,780 passengers and 2,300 staff across 18 decks.

Royal Caribbean placed an order with STX France for the construction of Harmony of the Seas in December 2012. The first steel for the ship was cut at STX France’s Saint-Nazaire shipyard in September 2013, while the keel-laying ceremony was held in May 2014.

The Harmony is powered by three 18.9-megawatt Wärtsilä 16V46 16-cylinder main generator diesel engines and three Wärtsilä 12V46 12-cylinder engines producing 13.9 megawatts each. The propulsion power is provided by three electric Azipod azimuth thrusters and manoeuvring is assisted by four 5.5-megawatt Wärtsilä CT 3500 tunnel thrusters. The propulsion system results in 82 megawatts (109,964 horsepower) and enables the ship to sail at a standard speed of 23 knots.

Harmony of the Seas embarked on her inaugural seven-night Western Mediterranean cruise from Barcelona, Spain, in June 2016, and currently operates itineraries around the Western Caribbean from her homeport of Galveston, Texas in the US.

3. Royal Caribbean International – Symphony of the Seas : 228,081 gross tonnes

At launch in 2018, the Symphony of the Seas surpassed the Harmony as the biggest cruise ship, weighing in at 228,081 gross tonnes. Measuring 361m (1,185 feet), the Symphony has a maximum capacity of 6,680 passengers and 2,200 staff across 18 decks and was the testing ground for Royal Caribbean's new muster drill . With a total length of 361m (1,185 feet), She is roughly 30 metres (98 feet) longer than the largest military ships , the US Nimitz-class aircraft carriers and the USS Gerald R. Ford .

The keel-laying ceremony for the Symphony of the Seas was held in October 2015 at STX’s Saint-Nazaire shipyard in France, and the ship sailed out in June 2017. She is powered by six diesel sets, each composed of three Wärtsilä 16V46D engines and three Wärtsilä 12V46D engines, as well as three 20-megawatt electric Azipod main engines – resulting in 82 megawatts (109,964 horsepower) of propulsion power and a standard cruising speed of 22 knots.

The Symphony commenced her seven-day maiden voyage from Barcelona in April 2018, and since then has mainly operated itineraries around the Caribbean from her homeports of Miami, New York, and Fort Lauderdale.

2. Royal Caribbean International – Wonder of the Seas : 235,600 gross tonnes

Royal Caribbean's flagship, Wonder of the Seas is the fifth Oasis-class cruise ship built for the cruise company. Weighing in at 235,600 gross tonnes, the Wonder was the largest ship in the world when she was completed in January 2022. Measuring 362m (1,187 feet) in length, the 18-deck Wonder has a maximum capacity of 7,084 guests across its 2,867 staterooms, as well as housing 2,369 crew.

Built by Chantiers de l’Atlantique in Saint-Nazaire, Wonder is powered by two Wärtsilä 16V46D engines and four Wärtsilä 12V46D engines; and uses three 20-megawatt electric Azipod engines for propulsion, combining for a propulsion power of 82 megawatts (109,964 horsepower and a standard cruising speed of 22 knots.

The Wonder sailed her maiden voyage in March 2022 from Fort Lauderdale, Florida, and has since served itineraries around the Caribbean from her homeports of Miami and Cape Canaveral.

1. Royal Caribbean International – Icon of the Seas : 248,663 gross tonnes

Weighing 248,663 gross tonnes and measuring 365 metres (1,1967 feet), the Icon of the Seas is the largest cruise ship in the world. Christened on 23 January 2024, the Icon has a maximum capacity of 7,600 passengers and 2,350 crew across 20 decks. She is the lead ship of the new Icon-class, with a sister ship the Star of the Seas due to be delivered in 2025 and another ship planned for delivery in 2026.

Built by Meyer Turku in Finland, the Icon is the first ship in the Royal Caribbean fleet that can be powered by LNG. It uses three Wärtsilä 14V46DF and three Wärtsilä 12V46DF for its main generator engines, which provide 67.5 megawatts of energy to run the ship. She is propelled by three 20-megawatt Azipod thrusters as well as five 4.8-megawatt Wärtsilä WTT-45 CP bow thrusters, with a cruising speed of 22 knots.

After sailing her maiden voyage on 27 January 2024, the Icon now sails year-round itineraries of seven-night trips around the Eastern and Western Caribbean from her homeport of Miami, Florida.

"The top 10 biggest cruise ships in the world" was originally created and published by Ship Technology , a GlobalData owned brand.

The information on this site has been included in good faith for general informational purposes only. It is not intended to amount to advice on which you should rely, and we give no representation, warranty or guarantee, whether express or implied as to its accuracy or completeness. You must obtain professional or specialist advice before taking, or refraining from, any action on the basis of the content on our site.

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Stunning Satellite Photos of World’s Largest Cruise Ship Being Built

Edit: An eagle-eyed reader pointed out that the images below are of Harmony of the Seas, not its sister ship, Symphony of the Seas, as originally mentioned. We’ve updated this article accordingly.

Royal Caribbean’s Oasis-class cruise ships take top honors as the world’s largest cruise ships. The Oasis-class include Oasis of the Seas, Allure of the Seas, and Harmony of the Seas. Symphony of the Seas — Royal Caribbean’s newest ship and the fourth in the class — is currently under construction, set to sail in April 2018.

The size of these ships can’t be overstated. It total, the typical Oasis-class ship will measure nearly 1,200 feet and carry nearly 7,000 people!

We recently uncovered a cool way to get a look at one of the newest ships in the fleet — Harmony of the Seas.

Most people are familiar with Google Maps and their extensive satellite photos covering the entire planet. We took a look at the shipyard in France where Royal Caribbean had the Harmony of the Seas built to see if we might see anything.

The shipyard is in Saint-Nazaire, France and specializes in super-sized projects like these. But when we took a look using Google Maps, there was nothing to see. No sign of any ships at all.

Then we switched over to “ Lite Mode ” in the program. Lite Mode is a version of Google Maps that uses less resources. It’s designed for slower computers, but we know from experience that it sometimes has different satellite photos than the regular version of Google Maps. (Note: The same trick works in Google Earth.)

There, we saw something big. Real big. It’s Royal Caribbean’s Symphony of the Seas Harmony of the Seas, sitting at the shipyard, still under construction. And the detail you can see is amazing.

Here’s the entire ship, zoomed in:

But you can zoom in further, seeing all the details of the ship’s top deck. Here you can see the famous Flowrider pools, sport court, and the Abyss waterslide. Where there is a current staging area for construction is where the mini-golf course goes.

Moving further forward, you can see the exhaust funnels wrapping around the Windjammer buffet. You can also clearly make out waterslides and pools.

Finally, all the way forward you can see the ship’s helipad and the distinctive cantilevered whirlpools that jut out on each side.

Harmony of the Seas is now homeported in Port Everglades, Florida, offering trips to the Caribbean.

Satellite photos courtesy of Google Maps

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I went on 2 of Royal Caribbean's largest and newest cruise ships. I enjoyed them, but they're not for everyone.

• I've sailed on Royal Caribbean's largest cruise ships , Wonder of the Seas and Icon of the Seas.
• Both megaships are jam-packed with people, amenities, and dining options.
• But if you want a quiet cruise to unique destinations, they might not be for you.

Before booking a vacation at sea, travelers should always research the best cruise line and ship for their needs.

If you're looking for a cheap and fast trip, try Margaritaville at Sea . Craving something more upscale? Consider Oceania Cruises.

But if you're looking for high-end sailing to unique destinations, I'd suggest avoiding Royal Caribbean's megaships .

Royal Caribbean has become synonymous with giant, family-friendly cruise ships

By 2028, Royal Caribbean wants one-third of its fleet to be megaships.

The latest addition, the 1,196-foot-long and 248,663-gross-ton Icon of the Seas, entered service in January, unseating Wonder of the Seas as the world's largest cruise liner.

Together, the two vessels can fit over 19,000 people — about 4,500 crew and 14,500 guests. Each ship has eight neighborhoods and there are 29 bars and 48 eateries between them.

I've attended complimentary sailings on both Wonder and Icon, the longest of which was three nights on the latter. From their colorful pool decks to the inescapable crowds, as a solo-adult traveler, I was equal parts entertained, overwhelmed, and overstimulated.

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But admittedly, I had fun. I do love a good waterslide; Wonder has three of them and Icon has six.

If you want to go on a cruise with your children — and if they, like me, love activities like rock climbing and mini golf — Royal Caribbean's megaships could be your best option.

Wonder and Icon are jam-packed with activity spaces like ice-skating rinks and ziplines.

But don't expect a peaceful retreat. The rowdy, bar-hopping adults and screaming children at the water playground aren't conducive to a relaxing vacation.

Megavessels might not be for you if you want a quiet cruise

If you want a relaxing vacation — maybe one that doesn't involve crowds of children — you shouldn't stay on either Royal Caribbean yacht.

There are many ways to have a luxury vacation on Icon of the Seas . But unless you want to pay for upcharged amenities at every turn, you'd be better off spending more upfront to reserve a premium cruise line — especially if you're interested in cruising for the destinations, not the ships.

After all, like most of Royal Caribbean's largest vessels, Icon and Wonder exclusively sail in the Caribbean.

Some destinations, such as French Polynesia, have set restrictions on which cruises can travel there amid concerns about pollution and overcrowding.

If stopping at these ports — or, really, anywhere outside the Caribbean — is at the top of your vacation wish list, you'll have to travel on a smaller Royal Caribbean ship or go with a different cruise line like Oceania , Silversea, and Regent Seven Seas.

You might not get a waterpark, but you'll get a quieter vacation to locations no megaship will likely be allowed to visit.

Watch: Inside the world's biggest cruise ship that just set sail

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China's second domestically built large cruise ship on April 20, 2024 enters a dock at the No.2 dock of its builder Shanghai Waigaoqiao Shipbuilding Co (Photo: CCTV)

The construction road map of China's second domestically built large cruise ship following the Adora Magic City was ...