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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

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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.

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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.

You might also be interested in:

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Full List: The 10 Current Largest Cruise Ships on the Planet

If you think cruise ships have gotten bigger, it’s not just your imagination. Whereas a ship built in the 1990s might hold 2,500 passengers and come in at around 75,000 gross tons (a measure of ship size), that’s nowhere near the ships built today.

Today, any new ship from a major line will be at least 140,000 gross tons, with many much larger than that. Passenger counts have also swelled, with many new ships carrying 5,000 cruisers when completely full.

But the largest cruise ships on the planet are in another league altogether. They can measure up to 250,000 gross tons (roughly triple the size of a ship built 30 years ago!) and when at full capacity with crew, have nearly 10,000 people onboard.

Why Are Cruise Ships So Big?

Truth be told, while the size of massive modern ships is staggering, not everyone likes the large ship experience. Some people can find them too crowded and too hard to navigate. But not everyone feels that way, and cruise lines have invested literally billions into building ships that are as large as possible. So what is the appeal of a mega ship?

Amenities/Activities: For passengers, the big advantage of size comes with everything that can be fit onto the ship. Instead of the old days where there was a pool, some loungers, and a buffet, modern mega ships are literal resorts at sea.

There are multiple pools, more than a dozen restaurants, casinos, ziplines, literal parks, ice-skating rinks, rock-climbing walls, spas, and more bars than you can count on your fingers and toes.

All of that combines into an experience that can exceed expectations and keep passengers coming back for more.

Efficiencies of Scale: For cruise lines, one big positive about a larger ship are greater efficiencies. Instead of having the cost of building two smaller ships — and the costs of having two sets of crew to run them both — one larger ship offers the chance for just as many passengers at a lower cost.

Marketing: Finally, one overlooked aspect of why cruise ships are bigger than ever has to do with marketing and publicity. There’s a certain awe and interest that comes with the world’s largest ships. Seeing them in port is essentially a giant billboard for a cruise line. And the largest ships also get significant press due to their size. All of that can translate into more interest, ticket sales, and prices for the newest — and biggest — ships.

With that in mind, here is the current list of the world’s largest cruise ships as of now…

Icon of the Seas

When it comes to the largest ships, Royal Caribbean is the undisputed leader with the six biggest cruise ships in the world. But the king of the fleet — and the largest cruise ship in the world — is Icon of the Seas .

Icon of the Seas doesn’t sail with passengers until 2024, but it’s already made waves. It’s not just the massive size (250,800 gross tons and 7,600 passengers at maximum capacity), but what’s onboard. A full-fledged waterpark, seven different pools, and eight different neighborhoods offer a spot for everyone. This ship looks to change cruising forever.

• Gross Tonnage: 250,800
• Length: 1,198 feet
• Passenger Capacity: 5,610 double occupancy; 7,600 max capacity
• Year Built: 2023

Wonder of the Seas

Wonder of the Seas is the latest edition of Royal Caribbean’s Oasis-class ships (until Utopia of the Seas arrives in 2024), which were the largest class in the world until the new Icon class took the torch. Still, it’s not as if Wonder of the Seas is a slouch.

At 235,600 gross tons, there’s room for 7,084 passengers and an amazing amount to see and do onboard. This includes Central Park, the mid-ship outdoor promenade that winds through lush gardens, and the AquaTheater, where performers put on aquatic shows, including towering high dives at sea.

• Gross Tonnage: 235,600
• Length: 1,188 feet
• Passenger Capacity: 5,734 double occupancy; 7,084 max capacity
• Year Built: 2022

Symphony of the Seas

Each iteration of Oasis-class ships has arrived just slightly larger than the previous when it comes to gross tonnage. That means they each had their time as the largest in the world before another arrived on the scene. In this case, Symphony of the Seas (228,000 gross tons and the ability to hold 6,680 passengers) took the crown in 2018.

Today, it’s the third-largest cruise ship on the planet, but it’s no slouch. It holds seven different neighborhoods, nearly 3,000 staterooms, three waterslides, and Ultimate Abyss — a 10-story dry slide.

• Gross Tonnage: 228,081
• Passenger Capacity: 5,518 double occupancy; 6,680 max capacity
• Year Built: 2018

Harmony of the Seas

Built in 2016, Harmony of the Seas features 18 decks, more than 225,000 gross tons (about 10% smaller than Icon of the Seas) and can carry nearly 6,700 passengers when completely full. That’s good enough to make it the fourth-largest cruise ship in the world.

It features many of the same components of other ships in the class, like the adults-only Solarium, Central Park, and the AquaTheater. That’s not to mention 17 different spots to grab a bite to eat.

• Gross Tonnage: 226,963
• Passenger Capacity: 5,479 double occupancy; 6,687 max capacity
• Year Built: 2016

Oasis of the Seas

The ship that started the trend of truly mega ships is also the namesake of the Oasis class — Oasis of the Seas. If you notice, most of the largest ships on our list were built recently. This ship first began sailing in 2009 and set off the “arms race” of larger ships that continues today.

Following a refurbishment, it now features three waterslides, a dozen lounges, 2,801 cabins (including one with a panoramic view right above the ship’s bridge), a splash pad for kids, and even an escape room themed like the 1960s NASA mission control. And did we mention 20 different places to find something to eat?

• Gross Tonnage: 226,838
• Length: 1,187 feet
• Passenger Capacity: 5,602 double occupancy; 6,771 max capacity
• Year Built: 2009

Allure of the Seas

Following a refurbishment of Oasis of the Seas, Allure of the Seas — which was the second ship in the class and built in 2010 — is actually now the smallest of the group based on tonnage. Still, that’s good enough for sixth largest in the world at “just” 225,000 gross tons.

On the ship, you’ll find 18 decks, 2,748 staterooms and more than 6,800 passengers when completely full. That’s definitely a lot of people, but remember that you also have a lot more space to spread out, giving plenty of elbow room.

• Gross Tonnage: 225,282
• Passenger Capacity: 5,496 double occupancy; 6,826 max capacity
• Year Built: 2010

MSC World Europa

While Royal Caribbean has a lock on the largest ships, the title of largest cruise ship from outside that cruise line goes to MSC World Europa.

Coming in at almost 216,000 gross tons, it’s roughly 14% smaller than Icon of the Seas. But don’t think it’s some slouch. From bumper cars to seven pools to an 11-story slide, there’s no shortage of things for kids to do. Adults will love the 13 different dining options and an indoor promenade or Panorama Lounge for shopping, having a drink, or just relaxing.

This ship will be joined in 2025 by sister-ship MSC World America, set to sail stateside.

• Gross Tonnage: 215,863
• Length: 1,094 feet
• Passenger Capacity: 5,231 double occupancy; 6,762 max capacity

Costa Smeralda/Costa Toscana (Tie)

These two ships come in at a tie for the eighth-largest cruise ship in the world. Built in 2019 and 2021, respectively, they both belong to Costa Cruises. And if the shape of the ship looks familiar, that’s because Costa is a sister line to Carnival. A similar design is used for Carnival’s largest ships, Mardi Gras, Celebration, and Jubilee. However, those ships come in just under the 185,000 gross tons seen with Smeralda and Toscana.

Both ships offer 13 pools and hot tubs, nearly a dozen restaurants and just under 20 bars and lounges. And if you like balcony views? There are 1,550 balcony rooms on each, providing plenty of options for the roughly 6,500 passengers that can sail at full capacity.

• Gross Tonnage: 185,010
• Length: 1,106 feet
• Passenger Capacity: 5,224 double occupancy; 6,554 max capacity
• Year Built: 2019/2021

P&O Arvia

Taking the crown as the 10th-largest cruise ship in the world is Arvia from P&O Cruises. Measuring just under 185,000 gross tons, it offer a similar design to ships like Costa Smeralda and Carnival Celebration, but don’t think these ships are all the same.

For instance, Arvia features a unique Skydome area that is a pool area with retractable roof by day and an entertainment venue by night. It also features its own rum distillery onboard, meaning you can take home rum literally made on the ship. Kids will love the Altitude zone that features a ropes course, mini-golf, and more. There’s also Mission Control, a submarine-themed escape room.

All told, a reported 6,685 passengers can enjoy the ship at one time.

• Gross Tonnage: 184,700
• Length: 1,130 feet
• Passenger Capacity: 5,200 double occupancy; 6,685 max capacity

More on Large Ships:

• The World’s Largest Cruise Ship Compared to Famous Places
• The World’s Largest Cruise Ships Sailing For Each Line (With Photos)
• Photos: See the New Icon of the Seas Sail for the First Time

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A look inside the Icon of the Seas, the world's biggest cruise ship, as it prepares for voyage

By Kris Van Cleave , Analisa Novak

January 18, 2024 / 12:14 PM EST / CBS News

Royal Caribbean is redefining the cruise industry with its latest ship, the Icon of the Seas. This $2 billion floating resort is largely booked until 2026.

Spanning nearly 1,200 feet, the cruise ship has 20 decks, which makes the Icon of the Seas the world's largest cruise ship.

It's a city at sea, accommodating up to 7,600 passengers in 2,805 staterooms and nearly 10,000 people, including the crew. The ship offers different experiences that include seven pools — one is the largest on any ship — the world's first onboard water park with six water slides, theaters, a casino and over 40 dining and drinking spots.

Jay Schneider, Royal Caribbean's Chief Product Innovation Officer, says the cruise ship is more than just its amenities.

"It's really about iconic experiences," he said.

And despite its massive size, Schneider said the ship is designed to avoid feeling overcrowded.

"We have purposely designed the ship to give more space for people," he said. "We believe, even at 7,500 guests, it won't feel to you like your entire hometown has joined the ship," said Schneider.    

Luxury comes at a price on the Icon. A weeklong Caribbean cruise costs about $3,500 for two people in an average stateroom. For those seeking more luxury, the Ultimate Family Townhouse – a three-story suite complete with touchscreen tables and a slide – can go for up to $100,000 per trip. The Royal Loft, aimed at high-rolling adults, offers two bedrooms, a private hot tub, and a spacious balcony starting at $40,000.

Colleen McDaniel, editor-in-chief at Cruise Critic, said that bigger ships benefit both passengers and cruise lines.

"It means more people can experience something. It means that there's a lot more amenities and activities onboard the cruise ship," McDaniel said. "The more people they can put on a cruise ship, of course, the better business they do, the more money they make."

Kevin Curran says the Icon took his breath away. Having followed the ship's construction for over a year, the Oregon resident said he's thrilled to be on its inaugural cruise from Miami.

"The more I watched the videos, the more I understood this was something special," he said.

Cruising is surging in popularity. Last year, passenger volume outpaced pre-pandemic numbers, and this year is expected to hit a new high of 36 million as spending on experiences has climbed 65% since 2019.

From the bridge, Captain Hendrik Loy is overseeing what amounts to a three-day test drive to the Bahamas.

"There is still fine-tuning that needs to take place," said Loy.

The Icon also champions environmental responsibility. It's powered by liquefied natural gas, treats its own waste, and produces its own water.

Emmy Award-winning journalist Kris Van Cleave is the senior transportation correspondent for CBS News based in Phoenix, Arizona, where he also serves as a national correspondent reporting for all CBS News broadcasts and platforms.

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The top 10 biggest cruise ships in the world

Cruise ships have evolved into giant vessels, even eclipsing aircraft carriers. So, what are the top 10 biggest cruise ships in the world?

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The Top 10 Biggest Cruise Ships in the World

Modern 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.

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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.

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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.

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The 20 Biggest Cruise Ships in the World in 2023

By: Author Carrie Ann Karstunen

Posted on Published: March 1, 2022  - Last updated: January 6, 2023

Cruise ships have been getting bigger—and adding lots of attractions that were unheard of just a few years ago. To help you pick which megaship is right for you, I’ve rounded up the 20 biggest cruise ships in the world in 2023.

Along with a ranking of the top 20 cruise ships by size , I’ve included important stats and unique features for each ship. If you’re considering sailing on one of the biggest cruise ships in the world, you’ll want to read this guide before you choose!

How do we determine the size of cruise ships for comparison?

Cruise ships can be measured by a variety of factors. You might assume that a ship’s size is determined by its length, weight, or even its passenger capacity.

But the size of a cruise ship is generally determined by gross tonnage —and (confusingly) that’s not a measurement of weight!

Gross tonnage, or GT, is a measure of the ship’s internal volume . To calculate GT, first a ship’s volume is calculated by measuring from keel to funnel to the outside of the hull framing. That number (in cubic meters) is then run through several mathematical formulas to determine GT. (I won’t go into all of that here, but if you’re interested the US Coast Guard has a simplified guide to measuring gross tonnage ).

The world’s 20 largest cruise ships in 2023

Currently, the top 20 biggest cruise ships have four sets of ties in the rankings, all between sister ships that share the same cruise line and class. So although we’ll start our list at #16, there are twenty ships in total!

Cruise fans will notice there are several new ships on the list this year. Have any of these newer ships bumped your favorites down in the rankings? Read on to find out!

16. (tie) MSC Seascape

• Cruise line: MSC
• Year built: 2022
• Gross tonnage: 170,412
• Length: 1112 ft / 339 m
• Max. beam: 135 ft / 41 m
• Staterooms: 2270
• Max. passengers: 5877
• Passenger decks: 15

Just making this year’s list of the world’s 20 largest cruise ships, MSC Seascape is tied for #16. The second Seaside EVO class ship launched by MSC Cruises in just over a year, Seascape features a glam New York City vibe.

The ship’s four-story Atrium is at the heart of the action on board, and boasts a sparkling staircase set with 10,000 Swarovski crystals—the perfect spot for a photo op on formal nights !

But MSC Seascape isn’t all glitz and glamour—the family-friendly ship offers 13 pools and water features and more than 140,000 square feet (13006 m²) of public outside space. Kids will love Pirates Cove Aquapark , a play space with slides, a rope bridge, and plenty of water sprayers and dumping buckets to beat the heat.

Seascape is also the first ship to feature the new thrill ride Robotron , a robotic virtual rollercoaster ride perched on the top deck.

Foodie guests on MSC Seascape will enjoy the ship’s eleven restaurants, including a massive Market Place Buffet and several specialty dining venues grouped together at Chef’s Court .

Related: MSC Cruises Launches MSC Seascape in New York City

16. (tie) MSC Seashore

• Year built: 2020 (launched 2021)
• Max. beam: 134.5 ft / 41 m

Almost identical to her sister ship Seascape , MSC Seashore is tied for #16 on the list of the largest cruise ships. The first in the EVO subclass of MSC’s Seaside class ships, Seashore and her sister are larger than other ships in their class and offer expanded outdoor spaces.

As an EVO ship, MSC Seashore offers improved technology to increase efficiency and reduce her carbon footprint. The energy-efficient equipment includes an advanced wastewater purification system and Safe Air , a new sanitation system that eliminates viruses and bacteria.

Seashore was purpose-built for the American market, but still offers the European flair that MSC is famous for. Guests can enjoy a taste of Italy at the ship’s Venchi 1878 gelato bars , offering twenty flavors of the decadent frozen treat in flavors like tiramisù and stracciatella.

MSC Seashore also features a gorgeous aft infinity pool—one of the largest at sea—with luxurious submerged sunbeds. The spot is a tranquil adults-only oasis by day, but it comes alive in the evening as the setting for the always-popular Silent Disco .

15. (tie) MSC Bellissima

• Year built: 2019
• Gross tonnage: 171,598
• Length: 1,036.2 ft / 315.83 m
• Max. beam: 141 ft / 43 m
• Staterooms: 2,217
• Max. passengers: 5,686
• Passenger decks: 14

Tied for the fifteenth spot in the list of the world’s largest cruise ships, MSC’s Bellissima is as tall as thirteen double-decker buses!

Perfect for a family cruise, Bellissima offers a wealth of kids’ activities for children aged one through seventeen. Parents can track kids’ whereabouts on board via an RFID bracelet synced with MSC’s app. For adults who want to enjoy a leisurely meal, there’s the Happy Dinner program where the little ones are escorted to the kids club as soon as they finish eating!

MSC Bellissima is home to a thrilling Grand Canyon-themed waterpark with three waterslides—two racing tubes as well as a champagne bowl-style slide. The younger set will love the Aquaplay spray area, and guests of all ages can climb the Himalayan bridge, a rope course that crosses the ship high above the water.

Guests aboard Bellissima also have access to an electronic cruise assistant, similar to Siri or Alexa. A first in the cruise industry, Zoe —who speaks seven languages and adapts to each passenger’s preference—provides information and help booking shows, spa treatments, and shore excursions, as well as notifications of events and promotions.

15. (tie) MSC Meraviglia

• Year built: 2017
• Staterooms: 2,244
• Max. passengers: 5,655

When MSC’s Meraviglia entered service in 2017, she was the sixth-largest cruise ship in the world—but has since fallen to #15, tied with her newer sister ship Bellissima .

The namesake of the Meraviglia class of cruise ships, she was the first to offer an expanded dining experience with fourteen restaurants, including a whopping four complimentary main dining rooms. Celebrity chef Carlo Cracco was enlisted to improve the quality of the ship’s cuisine.

On Meraviglia entertainment options abound—the Broadway Theatre hosts six unique shows each cruise, along with the Carousel Lounge where you can experience Cirque du Soleil at sea. The crew also puts on an impressive amount of activities and events, so there’s always something to do on a sea day .

The ship’s Amusement Park has a full-size bowling alley, 4-D cinema, F1 simulators, an arcade, as well as a sportplex that becomes a disco spot for young cruisers in the evening.

14. (tie) MSC Virtuosa

• Year built: 2020
• Gross tonnage: 181,541
• Length: 1,087.4 ft / 331.43 m
• Max. beam: 160 ft / 50 m
• Staterooms: 2,421
• Max. passengers: 6,334

MSC’s ship Virtuosa , built in 2020, is one of the newer offerings by the Swiss-Italian cruise line and is tied for number fourteen on our list of the world’s biggest cruise ships.

Virtuosa offers five pools in total, plus a water park with three waterslides, so water babies of all ages can spread out and enjoy the fun. The pools can accommodate over a thousand guests at a time!

If relaxing with a cocktail is more your style, stop by and see Rob the bartender at Starship Club . He’s the first humanoid bartender at sea, and speaks six languages!

Cruisers can also wander the Galleria Virtuosa —the pretty indoor promenade with restaurants and shops features an arched ceiling with the longest LED dome at sea , presenting an ever-changing light display.

14. (tie) MSC Grandiosa

• Staterooms: 2,632
• Max. passengers: 6,761

Tied for number 14, Grandiosa was the first vessel in MSC’s Meraviglia-Plus class , later joined by her sister ship MSC Virtuosa .

With 200 more staterooms than previous MSC ships, Grandiosa has expanded the number of accessible cabins on board, and added groups of up to three connecting staterooms as well as new family balcony cabins. Some spacious family staterooms can sleep up to twelve!

Grandiosa also has some innovative environmental features, including systems to reduce nitrogen oxide emissions by 80%, and sulfur emissions by 97%. She has a fuel-efficient hull and can run on shore power when docked.

Fun fact: Grandiosa ‘s godmother is Italian screen legend and longtime MSC ambassador Sophia Loren. She actually holds that honor for most of MSC’s fleet!

13. Mardi Gras

• Cruise line: Carnival
• Gross tonnage: 181,808
• Length: 1,130 ft / 344 m
• Max. beam: 138 ft / 42 m
• Staterooms: 2,641
• Max. passengers: 6,630

The 13th biggest cruise ship in the world is Carnival Cruise Line’s widely-anticipated Mardi Gras (currently the cruise line’s second-largest ship) which took her maiden voyage in July 2021.

Mardi Gras debuted several new concepts for Carnival, including three new dining venues. Big Chicken by Shaq serves up fried chicken and more, while quick-service Street Eats offers three food stations, each specializing in a different type of cuisine.

Emeril’s Bistro 1396 , created in partnership with celebrity chef Emeril Lagasse (Carnival’s new Chief Culinary Officer ), serves up New Orleans-style Creole dishes.

The Grand Central Atrium reinvented the central area of the ship, with a larger space featuring bars, cafés, and shops with aerial performances overhead.

She also boasts the first rollercoaster at sea —BOLT is an open-air coaster with spectacular sea views. Riders can control their speed using pedals inside each two-person motorcycle-themed car.

12. AIDAcosma

• Cruise line: AIDA
• Year built: 2021
• Gross tonnage: 183,200
• Length: 1,106 ft / 337 m
• Staterooms: 2,626
• Max. passengers: 6,600
• Passenger decks: 16

Setting sail on her maiden voyage in February 2022, Carnival Corporation’s German brand AIDA ‘s newest ship AIDAcosma makes #12 on the list.

AIDAcosma ‘s unique features include the Ocean Deck , a four-story relaxation oasis with an infinity pool and panoramic ocean views.

The ship also has a reinvented Fun Park , complete with a ropes course, rock-climbing wall, and a large indoor playground.

Her seventeen restaurants and 23 bars and cafés ensure that guests have plenty of variety on their cruise vacation! Notable is the new Mamma Mia specialty restaurant, serving fresh Italian cuisine including homemade pasta dishes.

11. Carnival Celebration

• Gross tonnage: 183,521
• Length: 1130 ft / 340 m
• Max. beam: 137 ft / 42 m
• Staterooms: 2687
• Max. passengers: 6631

Carnival Cruise Line’s newest ship Carnival Celebration launched in 2022 as the second member of the Excel class , joining her sister Mardi Gras . The new ship almost made the top 10 of the largest cruise ships, landing at number 11.

Celebration pays homage to her homeport of Miami with the 820 Biscayne zone, named after the cruise line’s first headquarters. The zone will feature the Deco Deli and 820 Bar , serving up Cuban sandwiches and tropical drinks.

Pizza fanatics will want to try the brand new Miami Slice , a free pizzeria that replaces the Pizza Pirate or Pizzeria del Capitano venues found on all other Carnival ships. The walk-up pizza joint features vibrant décor reminiscent of late-night eateries on Miami Beach’s Ocean Drive. 

Younger guests can check out Space Cruisers , a new program offered in partnership with the Kennedy Space Center. Kids age 2 to 11 will have the opportunity to try NASA-inspired activities tailored to their age group.

Celebration is the second ship in Carnival’s fleet to be completely powered by liquefied natural gas (LNG).

Related: Cassidy Gifford Becomes Godmother of Carnival Celebration in Miami

10. AIDAnova

• Year built: 2018
• Gross tonnage: 183,858
• Max. passengers: 6,654

In tenth place is AIDAnova , sister ship to AIDAcosma . The first of AIDA’s ships to use liquefied natural gas (LNG), AIDAnova has nearly zero emissions.

Wellness-minded cruisers will love AIDAnova ‘s 3545 square meters dedicated to fitness and relaxation. The new Body & Soul Spa features five ocean-view saunas, a sun terrace with three jacuzzis, and a tepidarium. Over 30 free exercise classes are offered each week in the Sport area, or train solo in the open-air gym.

Or take a leisurely stroll on the Lanai deck, where guests can walk almost all the way around the ship, stopping at restaurants and bars including the Lanai Bar at the stern.

• Cruise line: P&O
• Gross tonnage: 184,089
• Length: 1,130 ft / 344.5 m
• Staterooms: 2,614

Number nine is P&O UK’s Iona , the largest cruise ship built specifically for the British market. One of the newer ships on the list, Iona was delivered in 2020 but made her first voyage in August 2021.

Family-friendly Iona features the enclosed SkyDome pool area, kids’ splash zone, and a shallow pool for little cruisers. Hosted by specially-trained Reef Rangers, the Reef kids’ club is a fun environment for children aged 2-17, open from early morning until late.

But Iona ‘s not all about the kids! She’s actually home to the world’s first gin distillery at sea , producing the Marabelle label. Inspired by the Scottish island of Iona, the gin contains 18 botanicals. Guests can attend two unique gin masterclasses on board, including one that allows you to craft your own gin with expert guidance.

8. (tie) Costa Toscana

• Cruise line: Costa
• Gross tonnage: 185,010
• Staterooms: 2,612
• Max. passengers: 6,554

Italian line Costa Cruises’ newest ship, Costa Toscana , comes in at the eighth-largest cruise ship in the world. The Tuscan-inspired vessel features furnishings, fabrics, and accessories all made in Italy. Even the driftwood used to craft dining tables at Archipelago restaurant was harvested from the Italian shoreline by Guardians of the Coast .

Food is a major focus of the ship, with many of her 21 restaurants offering authentic local cuisine by chefs including Bruno Barbieri, Hélène Darroze, and Ángel León. Even the littlest cruisers have a special place to eat— Squok Restaurant is dedicated to families with kids.

If all the amazing food on board inspires you, be sure to check out Toscana ‘s Food LAB , where guests can learn to prepare their own culinary creations alongside the ship’s chefs.

8. (tie) Costa Smeralda

Tied for eighth place is Costa Smeralda , a favorite of sustainability-minded cruisers. Smeralda was the first in Costa’s fleet powered by liquefied natural gas (sister ship Toscana now also shares this feature), a fuel source that reduces the ship’s environmental impact.

Other eco-friendly features include LED lighting throughout the ship, an onboard desalinization plant that sustainably harvests onboard water directly from the sea, and systems that recover the engines’ heat to reduce energy use.

Costa Smeralda earned the coveted Green Plus notation from RINA, only awarded to the most environmentally friendly cruise ships.

• Cruise line: P&O Cruises
• Gross tonnage: 185,581
• Length: 1130 ft / 344.5 m
• Staterooms: 2614
• Max. passengers: 6685

P&O UK ‘s newest ship Arvia is also the cruise line’s largest, and debuts at #7 on the 2023 list of biggest cruise ships. An Excel-class ship like Iona , Arvia is similar but boasts some key differences.

Like her sister, this ship also features a Sky Dome over the pool area—but Arvia ‘s is retractable to allow for alfresco swimming, dining, and entertainment when the weather is right.

Arvia is home to the fleet’s first swim-up bar , complete with plenty of in-water seating, allowing guests to order and enjoy a cocktail right in the pool.

The new ship debuted several new restaurant concepts, including Green & Co featuring Mizuhana , featuring fish and plant-based cuisine. Also new are Roast at The Quays for traditional British lunches and the 6th Street Diner , an American-style diner serving breakfast,brunch, and dinner.

Arvia also has the first rum distillery at sea ! The Tidal Rum has partnered with P&O to produce the unique rum blend on the ship at Anderson’s Bar .

6. MSC World Europa

• Gross tonnage: 215,863
• Length: 1094 ft / 333.3 m
• Max. beam: 154 ft / 47 m
• Staterooms: 2626
• Max. passengers: 6762

With the debut of MSC World Europa in December of 2022, MSC Cruises now has a whopping seven ships on the list of the top 20 biggest cruise ships in the world—the most of any cruise line!

The Geneva-based company has been working diligently to expand the fleet and MSC’s newest cruise ship is a whopper of a vessel.

The ship is an astounding 21 decks high (there’s a deck 22, but cruise superstition skips deck 13), four decks taller than the largest cruise ship in 2023. Sixteen of those decks are passenger-accessible.

Much like the megaships offered by Royal Caribbean, MSC World Europa is divided into several districts that contain similar offerings—a must-have on any gargantuan cruise ship. Guests can visit the adults-only Zen district for a bit of calm, or the Family district with ten kids’ facilities offering fun for little cruisers and their grownups.

Ranking among the top ships with the most water features at sea, World Europa offers six pools and 14 hot tubs , along with an aquapark featuring multiple waterslides.

MSC World Europa is also the line’s first LNG-powered cruise ship —and the biggest liquefied natural gas powered cruise ship in the world! This cleaner alternative to traditional marine fuel significantly reduces carbon, sulfur, and nitrogen oxide emissions.

5. Allure of the Seas

• Cruise line: Royal Caribbean
• Year built: 2010
• Gross tonnage: 225,282
• Length: 1,180 ft / 360 m
• Max. beam: 198 ft / 60.5 m
• Staterooms: 2,742
• Max. passengers: 6,780

Royal Caribbean’s Allure of the Seas ranks as the fifth largest cruise ship in 2022. She’s the second (and smallest) of the Oasis-class ships.

Allure of the Seas features seven themed “neighborhoods”—the Royal Promenade, Central Park, Entertainment Place, Boardwalk, Pool and Sports Zone, Vitality at Sea, and the Youth Zone.

With a ten-deck-high zip line and the interactive H2O Zone waterpark, Allure of the Seas is a favorite ship for adventurous cruisers of all ages.

4. Oasis of the Seas

• Year built: 2009
• Gross tonnage: 226,838

Number four is Oasis of the Seas , the first of the namesake Oasis class, and the oldest ship to make the top 15 list. Built in 2009, she was then the largest cruise ship in the world, and the first to have a maximum capacity of over 6000 passengers!

Oasis of the Seas may be an older ship, but she doesn’t look like one! In 2019 she had a $165 million transformation that brought the ship up to date.

Entertainment abounds on this ship, from the splashy Aqua80 show in the AquaTheater to Music Hall , a live music venue with plenty of floor space for dancing. Or try one of the four onboard water slides including the ten-story-high Ultimate Abyss .

3. Harmony of the Seas

• Year built: 2016
• Gross tonnage: 226,963
• Length: 1,188.1 ft / 362.12 m
• Max. beam: 215.5 ft / 65.7 m
• Staterooms: 2,747
• Max. passengers: 6,687

Coming in at number three is Royal Caribbean’s Harmony of the Seas , built in 2016 at a cost of 1.3 billion dollars.

With her three pool decks containing an impressive collection of pools and hot tubs, you’ll never feel crowded taking a dip. You can even learn how to SCUBA dive , right on the ship! Aboard Harmony of the Seas , guests have the opportunity to take the PADI® Open Water Diver Course, culminating with open water dives at various ports of call.

After you’ve worked up an appetite in the pool, try one of Harmony of the Seas ‘ twenty restaurants, serving over 200 different dishes on a daily basis.

2. Symphony of the Seas

• Gross tonnage: 228,081
• Length: 1,184.42 ft / 361.011 m
• Staterooms: 2,759
• Max. passengers: 6,680

The largest cruise ship in the world until 2022, Symphony of the Seas comes in second—but is still a behemoth at 1184 feet and 228,081 gross tons!

Built in 2018, Symphony of the Seas boasts some fun tech! Check out the Big Wonder , a seven-ton canopy lit with color-changing LEDs that cast a glow over the ship’s Solarium at night.

Enjoy a cocktail at Bionic Bar , where one of two robot bartenders can shake you up the perfect martini. But don’t worry, the ship’s 13 other bars and lounges are staffed by friendly humans.

Or play a lively game of glow-in-the-dark laser tag to battle for control of Planet Z —when the ship’s ice rink is temporarily transformed into an alien world, of course.

1. Wonder of the Seas

• Gross tonnage: 236,857
• Length: 1,187.8 ft / 362.04 m
• Max. beam: 210 ft / 64 m
• Staterooms: 2,859
• Max. passengers: 6,988

Wonder of the Seas from Royal Caribbean International is the cruise line’s newest—and the world’s biggest cruise ship, at almost 1188 feet long and 236,857 gross tons!

Delivered in February 2022, Wonder of the Seas made her maiden voyage from Fort Lauderdale on March 4, 2022.

Like the other Oasis-class ships, she’s organized into neighborhoods, but with the addition of an eighth unique section. This new neighborhood is dedicated to suite guests, with a plunge pool and bar as well as the suites-only Coastal Kitchen and Suites Lounge .

Wonder of the Seas offers some exciting new features—in addition to boasting the largest poolside movie screen of any RCCL ship there’s also The Vue , a cantilevered bar offering panoramic ocean views.

For the kids, there’s the new Wonder Playscape —an underwater-themed play area with climbing walls and an interactive puzzle mural.

Comparing the 20 biggest cruise ships in the world

Largest cruise ships faq.

How is the size of a cruise ship measured?

Ships are measured by gross tonnage, which is a measure of internal volume.

What does maximum beam mean on a ship?

Maximum beam is the measurement at the widest part of a ship’s hull.

Which cruise ship is the biggest?

Royal Caribbean’s  Wonder of the Seas  is the world’s largest cruise ship, with a gross tonnage of 236,857.

Which cruise ship is the longest?

Royal Caribbean’s  Wonder of the Seas  is the world’s longest cruise ship at 1,187.8 ft (362.04 m).

Which cruise ship can hold the most passengers?

Royal Caribbean’s  Wonder of the Seas  can hold the most passengers, with a maximum occupancy of 6,988.

Which cruise ship has the most staterooms?

Royal Caribbean’s  Wonder of the Seas  has the most passenger staterooms, at 2,859.

Have you sailed on one of the largest cruise ships in the world? Or do you prefer cruising on a smaller ship? I’d love to hear in the comments below!

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

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.

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.

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Icon of the Seas: Everything you need to know about the largest cruise ship in the world

The world's largest cruise ship, complete with 20 decks and six waterslides, is getting ready to set sail for the first time.

Royal Caribbean's "Icon of the Seas" is in Port Miami getting ready for its maiden voyage into the Caribbean. NBC News correspondent Sam Brock got a firsthand look at the breathtaking ship on TODAY on before it heads out to sea.

Here's what to know about the record-setting cruise ship.

How big is the Icon of the Seas ship?

A seven-year building process in Finland resulted in a ship that's 1,198 feet long and features 20 decks. It can carry more than 7,000 passengers, and combined with the crew, will hold nearly 10,000 people — the size of a small city.

At 250,800 gross tons and nearly 1,200 feet long, it makes the Titanic look like a tugboat. For comparison, the Titanic was 882.9 feet long and 46,328 gross tons.

What are some of the amenities on the Icon of the Seas?

There are eight "neighborhoods" geared to all different experiences, from the shopping area of "Central Park" to the pools and cabanas of "Chill Island."

They also are in proximity to one another so parents can relax in the pool while the kids go flying down one of the six slides in the nearby water park area of "Thrill Island."

“You’re not competing with another cruise, you’re competing with any other vacation a family would want to do," Royal Caribbean senior vice president Jay Schneider told Brock on TODAY.

"So we purposely put a more adult-centric pool next to the slide structure so you know mom, dad can sit and immerse in the water while the kid goes on like 50 slides."

In keeping with the theme of the ship, a bar named "Swim & Tonic" is the largest swim-up bar ever put on a cruise ship, according to Schneider.

There also is a three-story glass structure known as "The Pearl," which Schneider said is the world's largest "kinetic" art sculpture.

The vessel also includes a theater that features performances of Broadway's "Wizard of Oz."

For the more adventurous, there's the "Crown's Edge" walk, which Brock tested out on TODAY. He strapped into a harness that took him along a zipline that allows passengers to dangle along the side of the ship, 150 feet above the water.

How much does a trip on the Icon of the Seas cost?

A seven-night round trip from Miami to the eastern Caribbean that includes a stop at Royal Caribbean's private island in the Bahamas costs an average of $2,019 per person, according to the cruise line's website . It's an average of $1,809 for the package without the stop at the island.

That package also includes stops in St. Thomas and San Juan, Puerto Rico. The demand for that journey is so overwhelming that the earliest trip currently being booked is for Oct. 11, 2025.

There's also a trip to the western Caribbean for $1,759 per person with a stop at the island, which is called Perfect Day at Coco Cay.

When is the Icon of the Sea's release date?

The maiden voyage for the gargantuan vessel is coming up on Jan. 27, leaving out of Port Miami.

Royal Caribbean is taking bookings for the alternating trips to the eastern and western Caribbean, with the earliest available being a seven-night trip that departs on Feb. 24 and costs an average of $2,297 per person, according to its website.

Scott Stump is a trending reporter and the writer of the daily newsletter This is TODAY (which you should subscribe to here! ) that brings the day's news, health tips, parenting stories, recipes and a daily delight right to your inbox. He has been a regular contributor for TODAY.com since 2011, producing features and news for pop culture, parents, politics, health, style, food and pretty much everything else. 

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

Icon of the Seas, the world's largest cruise ship, arrives at PortMiami

At nearly 1,200 feet long and weighing 250,800 gross tons, the 20-deck ship is the first in a new class of vessels for royal caribbean that has been making its way to miami from europe since december, by monica galarza • published january 10, 2024 • updated on january 11, 2024 at 2:56 pm.

It's official. The world’s largest cruise ship, Royal Caribbean's Icon of the Seas , pulled into its new home port in Miami on Wednesday morning.

At nearly 1,200 feet long and weighing 250,800 gross tons, the 20-deck ship is the first in Royal Caribbean’s new Icon Class and has been making its way to Miami from Europe since December.

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The Icon will be joined by two more ships in the coming years – one in 2025, Star of the Seas, and another in 2026.

On Wednesday, the cruise line is marking the occasion with a party at the Perez Art Museum to give their employees on the shore a chance to see the brand-new ship up close.

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The ship, which took 900 days to build, is set to set sail from PortMiami on Jan. 27 and will be offering year-round alternating seven-night Eastern and Western Caribbean itineraries.

And last December, soccer superstar Lionel Messi was named the official icon of Icon of the Seas when he welcomed the ship in an exclusive naming celebration in Miami.

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Not only will the ship have eight different neighborhoods for  travelers to explore , but the 7,600 passengers allowed onboard will also have seven pools, six record-breaking waterslides and about 40 bar and dining options to choose from.

“We are celebrating more than a new ship; it’s also the celebration of the culmination of more than 50 years of innovation and dreaming at Royal Caribbean to create the ultimate vacation experience,” said Jason Liberty, president and CEO, Royal Caribbean Group.

For the adventure-seekers, Thrill Island will feature Category 6, the world’s largest waterpark at sea.

This neighborhood will also have a ropes course and thrill ride, a FlowRider wave simulator and a mini golf course.

The ship's Chill Island has four of the seven pools and an adults-only area.

The company added that the Icon of the Seas   is also the cruise line’s first ship that can be powered by liquefied natural gas, a transitional fuel.

The dual-fuel engines will work alongside a lineup of energy efficiency initiatives and industry-leading environmental programs on board, like the first waste-to-energy plant at sea. 

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Breaking news, passenger goes overboard on wonder of the seas, world’s largest cruise ship.

A passenger has gone overboard on Royal Caribbean’s Wonder of the Seas, the largest cruise ship in the world, while it was off the coast of Cuba during a voyage from Florida.

The unidentified guest went off the 230,000-ton vessel late Tuesday, the second day of its seven-day sailing from Port Canaveral, Florida, Royal Caribbean said.

“The ship’s crew immediately launched a search and rescue operation and is working closely with local authorities,” the company said.

The company told Insider it had been working with the US Coast Guard, but an agency spokesperson told the outlet that Cuban authorities are in charge of the effort because the incident occurred in their territorial waters.

Passengers on the mammoth ship said it had already diverted from its original itinerary due to Hurricane Idalia, according to the outlet.

They reported an “Oscar! Oscar! Oscar!” call, signifying an overboard emergency, about 9 p.m. EDT, industry blog ​ Cruise Hive reported .

The crew spent about three hours searching the waters using spotlights, small craft and watchers after the ship turned around and retraced its route, according to the site.

The Wonder of the Seas, which is 1,188 feet long and features 18 decks, can accommodate nearly 7,000 passengers and 2,300 crew members. Royal Caribbean’s Icon of the Seas is set to break the Wonder’s record when it begins service next year, Insider reported.

Earlier this month, an Indian woman died after she apparently jumped off the Spectrum of the Seas, another Royal Caribbean cruise ship.

Reeta Sahani, 64, was declared missing after her husband, Jakesh Sahani, 70, woke up in the middle of the night and noticed she was not in their cabin. Her family later confirmed that she had died.

In June, a 42-year-old woman was rescued after she fell off Royal Caribbean’s Mariner of the Seas about 25 miles south of Punta Cana in the Dominican Republic during a trip from Florida.

Other recent incidents occurred on the cruise ships Carnival Magic, Carnival Elation and Emerald Princess. 

On average, 19 people go overboard on cruise ships each year — and of those, only about four are rescued, Insider reported, citing a 2020 study commissioned by the industry trade group Cruise Lines International Association.

The low success rate has sparked discussions about whether all cruise ships should be equipped with detection devices that automatically alert the crew when someone goes overboard.

“All cruise lines use a variety of measures to maintain a safe environment on board cruise ships, including physical barriers around the periphery of external decks and balconies, video surveillance systems in public areas, and trained crew members who can respond quickly to an unsafe situation or emergency,” a spokesperson for Cruise Lines International Association told Insider.

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• Grand Bahama Shipyard secures $665M transformation deal to...

Grand Bahama Shipyard secures $665M transformation deal to become world's largest cruise ship repair hub

Prime Minister and Minister of Finance, Philip Davis, has formalized an agreement with Grand Bahama Shipyard ( Freeport ) for a US$665 million transformation project aimed at establishing the facility as a leading global hub for cruise ship and vessel repair.

The project, expected to generate billions in economic impact for Grand Bahama over the next 25 years, will position the shipyard as the largest cruise ship repair facility in the world. For 2+ decades, Grand Bahama Shipyard has been owned by Carnival Corp. & plc , Royal Caribbean Group , and the Grand Bahama Port Authority.

The expansion will include the construction of two new docks, the largest of their kind, capable of servicing the full range of cruise ships, including the Icon and Oasis classes, as well as a significant portion of the global commercial shipping fleet. This development marks a significant recovery for the shipyard following the 2019 incident in which Drydock No. 2 was damaged by a crane collapse, leading to the temporary diversion of the largest ships to other facilities.

Carnival Corporation's President/CEO Josh Weinstein emphasized that this investment will establish The Bahamas as a central player in global ship repair and a crucial service provider for both cruise and commercial fleets.

Prime Minister Davis highlighted the critical importance of this capital investment, noting that the shipyard is expected to contribute US$350 million in total economic output once fully operational.

Within 5 years, the facility is anticipated to employ ~1200 workers, with the majority being full-time Bahamian employees.