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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.

Why Trust U.S. News Travel

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

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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.

Kris Van Cleave is CBS News' senior transportation and national correspondent based in Phoenix.

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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.

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BOLDER AND BIGGER

The world's largest cruise ships.

On the world’s largest cruise ships, bigger means bolder adventures.

On the world’s largest cruise ships, bigger means bolder adventures. There isn’t a holiday in the world that packs more adventure into one week than Oasis Class ships – Harmony®, Allure®, Symphony®, Oasis®, Wonder® and Utopia of the Seas℠. Whether you’re looking forward to a thrill-filled getaway with a squad that spans several generations, or a sun-soaked couples’ retreat elevated by world class dining and electrifying nightlife, each Oasis Class cruise ship offers experiences to wow every kind of traveler. Discover why the largest cruise ships sailing to Caribbean and Europe vacation destinations are consistently awarded Best Ship year after year by Travel Weekly readers. 

FIVE SHIPS, ENDLESS ADVENTURES

Larger than life thrills.

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DISCOVER THE BOLDEST ADVENTURES YET

With more than 16 decks and 20 restaurants, 7 distinct neighborhoods bustling with unique onboard experiences, and endless thrills to discover around every corner, the world’s largest cruise ships serve up expeditions filled with excitement drenched slides and rides, shows that transcend the stage, and gourmet globetrotting from Italy to Wonderland.

GAME CHANGER

When it debuted, Oasis of the Seas® won Best Cruise Ship — and now the Amplified game changer will set a new standard for making memories.

SHOW STOPPER

Awarded Best for Entertainment, Best Individual Cruise Ship, and Best Large Cruise Ship, Allure of the Seas® is a certified scene-stealer.

FAMILY FAVORITE

Named Best for Families in the Cruise Critic’s Choice Awards, Harmony of the Seas® delivers thrills to explorers of all ages.

BIGGEST & BOLDEST

The largest cruise ship in the world, Symphony of the Seas doesn’t just win awards — it wins over everyone who sets foot onboard.

NEWEST, BIGGEST AND BOLDEST FAMILY ADVENTURES

Go big on bold when you sail aboard the three largest cruise ships in the world. Deck-defying attractions aren’t the only things to look forward to when you sail onboard the newest cruise ships addition to the Oasis Class.

utopia OF THE SEAS℠

Introducing Utopia of the Seas℠ — the ship that’s totally transforming weekends for good. We’re talking bigger flavors. Bolder play. And better chill days than you’ve ever imagined. No craving goes unsatisfied with over 40 ways to dine and drink. New charttopping showstoppers blow your mind on stage, ice, water and air. This is not a routine recharge. This is the World’s Biggest Weekend — arriving in summer 2024 to Port Canaveral.

EXPLORE UTOPIA OF THE SEAS

WONDER OF THE SEAS®

Wonder of the Seas® brings even bigger adventures to the award-winning Oasis Class. Like eight unique neighborhoods, including the Suite Neighborhood. A totally redesigned pool deck with more ways to soak up the sun —or shade —than ever before. The most immersive AquaTheater ever, with a game-changing surround-stage that makes you feel part of the action.

EXPLORE WONDER OF THE SEAS

SYMPHONY OF THE SEAS®

One of the world’s biggest cruise ship, Symphony of the Seas®, the travel adventures are larger than life. From epic onboard thrills to revolutionary dining and entertainment, this ship will change how you vacation no matter what kind of experience you’re after.

EXPLORE SYMPHONY OF THE SEAS

DISCOVER THE WORLD’S LARGEST CRUISE SHIPS

There isn’t a vacation in the world that packs more adventure into one week than Oasis Class ships — Harmony®, Allure®, Symphony®, Oasis, Wonder®   and Utopia of the Seas ℠ . With ships this packed with adventure, next-level thrills never ends.

OASIS OF THE SEAS

Reimagined from bow to stern, the Amplified Oasis of the Seas® is loaded with fresh and exciting things to do to level up your romantic retreat — including bars, entertainment and dance floors that keep the fun going long into the night.

EXPLORE OASIS OF THE SEAS

ALLURE OF THE SEAS

The most awarded ship in the world is stealing the spotlight again for entertainment, dining, family activities and more, it’s filled with endless ways to make every moment incredible.

EXPLORE ALLURE OF THE SEAS

HARMONY OF THE SEAS

Rally the crew for the boldest family vacation ever. Harmony of the Seas® offers thrills for all ages, like the tallest slide at sea, surf sessions on the FlowRider®* and plenty of unique spaces just for kids of all ages.

EXPLORE HARMONY OF THE SEAS

Central Park

Ultimate abyss/flowrider*, splashaway bay, sugar beach, playmaker's.

DISCOVER. PERFECT DAY AT COCOCAY

Forget everything you thought you knew about beach days, because this private island destination is raising the standard to a whole new level. Experience elevated island vibes while lounging in The Bahamas’ only private overwater cabanas. Earn bragging rights on the tallest waterslide in North America. And take your vacation to new heights — literally — in a helium balloon ride above the island. This is Perfect Day at CocoCay — only on Royal Caribbean®.

EXPLORE PERFECT DAY AT COCOCAY

SEVEN NEIGHBORHOODS ENDLESS WAYS TO EXPLORE

Get ready for an unforgettable getaway filled with first-of-their-kind feats, including seven distinct and vibrant neighborhoods that each offer up bucket list adventures, palate-pleasing dining and inspiring entertainment to rival any cosmopolitan city on land — and they’re only found on Oasis Class ships by Royal Caribbean®. 

READ OUR GUIDE TO OASIS CLASS NEIGHBORHOOD'S

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Largest passenger liner (cruise ship)

Delivered to Royal Caribbean Cruises Ltd (USA) by Meyer Turku (Finland) on 27th November 2023, Icon of the Seas is the world’s largest cruise ship. She measures 250,800 gross tons on overall dimensions of 364.75 by 48 metres (1,196 ft 8 in by 157 ft 5 in) and is driven by six Wärtsilä dual-fuel diesel engines driving electric motors developing 67,500 kW (90,518 hp). The ship has 20 decks and can carry 5,610 passengers (double occupancy) and a maximum of 7,600. Crew numbers total 2,350.

The ship’s engines can run on either liquefied natural gas (LNG) or distillate fuel. Fuel cells provide power for electricity and fresh water. It will operate weekly Caribbean cruises from Miami and has seven swimming pools, six water slides and boasts the tallest waterfall, tallest water slide, largest waterpark and the first suspended infinity pool at sea.

The previous largest cruise liner was the Wonder of the Seas , the fifth vessel in Royal Caribbean's Oasis series. She was delivered in January 2022 by Chantiers de l’Atlantique, St Nazaire, France, and measured 362.12 m overall by 64 m (1,188 ft by 209 ft) and has a gross tonnage of 235,600. She has 18 decks and can accommodate a maximum of 6,988 passengers and 2,300 crew members.

Near sister Harmony of the Seas has the greater beam of 65.7m (215.5 ft) but a gross tonnage of only 226,963.

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On the World’s Largest Cruise Ship, Thrills and Space to Chill

Our reporter joined thousands of passengers on the inaugural sailing of Royal Caribbean’s Icon of the Seas. Yes, the water rides were wild. But the most surprising thing she found? Some actual peace and quiet.

Ceylan Yeginsu, a reporter for the Travel section, tries out a ride in the sprawling water park on Royal Caribbean’s Icon of the Seas cruise ship. Credit...

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By Ceylan Yeğinsu

Photographs by Scott McIntyre

• Published Feb. 9, 2024 Updated Feb. 22, 2024

One man got down on his knees and kissed the rug emblazoned with the ship’s logo. Another lifted his wife and swung her around, ecstatic to be among the roughly 5,000 passengers to embark on the inaugural sailing of the world’s largest cruise ship, the Icon of the Seas.

For months, the 250,800-ton ship, which can carry nearly 8,000 people, has been making headlines — including some that have criticized its size and potential to damage the environment . But the passengers who plunked down $1,800 to $100,000 and boarded the ship at Port Miami in Florida on Jan. 27, said nothing could have prepared them for the vessel’s sheer scale.

“It’s stunning,” said Christina Carvalho, a 43-year-old accountant from Oakland, Calif., as she stood on the ship’s Royal Promenade, gaping up at “The Pearl,” a gigantic kinetic art installation. “It feels even bigger than I expected.”

While Royal Caribbean has packed the ship with amenities to craft “the ultimate family vacation,” the company’s design team has tried to defy negative stereotypes like crowded decks and long lines. Instead of steel walls, the interior is open and airy, with floor-to-ceiling windows to bring passengers closer to the water and make the central thoroughfare feel less like a shopping mall.

“Over the years our customers told us that despite being on the ocean, they did not feel connected to it, so with Icon we wanted to bring water everywhere,” said Jennifer Goswami, the director of product development at Royal Caribbean International.

I was on board the Icon of the Seas for five days of its seven-night inaugural sailing to the eastern Caribbean. Here are some of my takeaways:

Embarkation

Embarkation starts through Royal Caribbean’s app. After some glitches, it took me 10 minutes to scan identification documents, fill out a health form and pick a time slot for boarding.

On the day of the sailing, I headed to Port Miami expecting chaos, but as I got out of the taxi, I was greeted by a porter who took my bag and ushered me to the terminal. I scanned my app, showed my passport and went through security in less than 10 minutes. I lingered, waiting to see if others had as smooth an experience as I did, but there was just a steady flow of passengers ascending the gangway.

The ship has the feel of a city, with eight distinct “neighborhoods.” My favorite, Central Park, was filled with more than 33,000 plants; it was the perfect place to stroll or read on a bench. The Royal Promenade, with karaoke and a piano bar, could get crowded and noisy at peak times.

The seven swimming pools are designed for different vibes and demographics: The Hideaway is an adults-only infinity pool, with D.J. sets and cocktails; another adult pool has an adjacent children’s splash pool. Empty lounge chairs were plentiful for sunbathers across the ship.

On our first sea day, I was so surprised by the relative absence of crowds that I walked the ship trying to find them. But with so many venues, including 40 restaurants, bars and entertainment spaces, passengers were constantly moving around.

Seeking a quiet space one afternoon, I found the Aquadome , a tranquil lounging area with wraparound windows. Fellow passengers napped there.

Entertainment and activities

From a sunrise surf simulator lesson to late-night dancing in the nightclub, the ship seems to offer something for everyone, most of it free. The water park with six slides was a big draw. One ride, the Crown’s Edge, is not complimentary: Starting at $49, it tosses you (in a harness) above the sea, leaving you dangling.

There is a fitness center, jogging track, a basketball and soccer court, a putt-putt course, pickleball, rock climbing and dancing. A wellness center and spa offers treatments for an additional cost. All can be reserved on the app; for popular attractions like the Crown’s Edge it’s helpful to book ahead because places fill up fast.

For nightly entertainment, “Aqua Action” was a standout, with aquatic entertainers performing under a 55-foot waterfall, as was the comedy club.

Not surprisingly, some passengers felt overprogrammed. “There’s almost too much to do,” said Nancy Carter, 54, a nurse from Brighton, England. “It’s hard to plan your day and even when you are busy doing something, you feel like you are missing out on something else.”

At the Surfside neighborhood, there are pools and restaurants for both adults and children so that families can spend time together. For parents wanting alone time, the Adventure Ocean child-care facility has play areas and programs for ages 6 months to 12 years that is included in the fare.

There’s a social center for teenagers, too, with games and music. “It’s a great place to meet new people and make friends,” said Madison Foxx, 14, from Morrisville, N.C. Her mother, Ashley, a 38-year-old federal prosecutor, said the ship kept her two children entertained and allowed her both alone time and quality family time.

“I can relax and the kids are happy and busy all day," she said. “Then we have many special moments together.”

One of the biggest surprises was the array of dining choices.

The Windjammer Cafe and the main dining room were the busiest all-inclusive options. My daily go-to was the Aquadome food hall, with crepes made-to-order and a Greek food stand. Another favorite of mine was Pier 7, a restaurant in Surfside that served raw-tuna Buddha bowls, mango-lime shrimp tostadas and other dishes.

Meals at specialty restaurants, such as Giovanni’s Italian Kitchen and Hooked Seafood, come at an additional cost, or are included in some food and beverages packages that range from $9.99 to $115 per day. Reservations are recommended.

The Empire Supper Club offers an eight-course meal paired with cocktails. At $200, the tasting menu included Wagyu rib-eye, rabbit and sea bass topped with parsnip and red beets.

Cabin prices — which recently increased, because of high demand — range from $2,699 per person for an interior cabin to over $100,000 for a three-story townhouse with an indoor slide and backyard. Some family accommodations have connecting rooms and large terraces.

Though only 204 square feet, my ocean balcony room did not feel cramped thanks to minimalist design and the views.

Environment

Royal Caribbean says it set a new standard for sustainability with this ship, installing advanced water-treatment and waste systems, among other features. But some environmental groups say that building a vessel this size is not compatible with the cruise industry’s long-term sustainability goals.

On board, I saw staff sorting through the trash to take out misplaced items to recycle, and single-use plastic appeared to be minimal; passengers were given reusable cups at drinking stations.

That the water slides remained on, even after they were closed to passengers, caught me by surprise. It seemed like an unnecessary waste of energy. (Royal Caribbean did not respond to a request for comment.)

Passengers I spoke to did not seem too concerned about the ship’s potential to harm the environment, with some arguing that land and air travel are not climate-friendly either.

Our seven-night itinerary started with two days at sea. The first stop was on Day 4 at Basseterre, the capital of St. Kitts and Nevis. Excursions ranged from a hike up Mount Liamuiga to a food-and-rum tour, with prices from $39 to $249. I chose a sailing and snorkeling excursion ($155) and enjoyed the secluded bay, but the beach was crowded and touristy.

An anticipated excursion for Ms. Foxx, the federal prosecutor, and others was Coco Cay, Royal Caribbean’s private island. When I asked about her visit — I called later, having to disembark before the excursion — Ms. Foxx said her children loved the slides and snorkeling.

And would she sail on the Icon of the Seas again?

“Yes, but I might wait a bit,” she replied. “I want everyone to get a chance to try it out.”

Follow New York Times Travel on Instagram and sign up for our weekly Travel Dispatch newsletter to get expert tips on traveling smarter and inspiration for your next vacation. Dreaming up a future getaway or just armchair traveling? Check out our 52 Places to Go in 2024 .

An earlier version of this article misstated the number of plants in the Central Park “neighborhood” of Icon of the Seas. It has more than 33,000 plants, not 20,000 plant species.

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Ceylan Yeginsu is a travel reporter for The Times who frequently writes about the cruise industry and Europe, where she is based. More about Ceylan Yeğinsu

Come Sail Away

Love them or hate them, cruises can provide a unique perspective on travel..

 Cruise Ship Surprises: Here are five unexpected features on ships , some of which you hopefully won’t discover on your own.

 Icon of the Seas: Our reporter joined thousands of passengers on the inaugural sailing of Royal Caribbean’s Icon of the Seas . The most surprising thing she found? Some actual peace and quiet .

Th ree-Year Cruise, Unraveled:  The Life at Sea cruise was supposed to be the ultimate bucket-list experience : 382 port calls over 1,095 days. Here’s why  those who signed up are seeking fraud charges  instead.

TikTok’s Favorite New ‘Reality Show’:  People on social media have turned the unwitting passengers of a nine-month world cruise  into  “cast members”  overnight.

Dipping Their Toes: Younger generations of travelers are venturing onto ships for the first time . Many are saving money.

Cult Cruisers: These devoted cruise fanatics, most of them retirees, have one main goal: to almost never touch dry land .

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The world’s largest cruise ship has 20 decks, 7 pools and would cover almost 4 city blocks

The ship is the size of almost four city blocks and runs nearly 1,200 feet (365 meters) from bow to stern. AP Video by Daniel Kozin.

FILE - The Icon of the Seas, the world’s largest cruise ship, sits docked after arriving to its home port in Miami, Wednesday, Jan. 10, 2024. Royal Caribbean’s Icon of the Seas is leaving South Florida on Saturday, Jan. 27, for its first seven-day island-hopping voyage through the tropics. (AP Photo/Rebecca Blackwell, File)

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FILE - Icon of the Seas, the world’s largest cruise ship, sits at dock as it prepares for its inaugural public voyage later this month, Thursday, Jan. 11, 2024, at PortMiami in Miami. Royal Caribbean’s Icon of the Seas is leaving South Florida on Saturday, Jan. 27, for its first seven-day island-hopping voyage through the tropics. (AP Photo/Rebecca Blackwell, File)

FILE - Waterslides are seen atop a deck overlooking floors of rooms aboard Icon of the Seas, the world’s largest cruise ship, during a media day preview as it prepares for its inaugural public voyage later this month, Thursday, Jan. 11, 2024, in Miami. Royal Caribbean’s Icon of the Seas is leaving South Florida on Saturday, Jan. 27, for its first seven-day island-hopping voyage through the tropics. (AP Photo/Rebecca Blackwell, File)

FILE - Employees and visitors walk in the Royal Promenade area of Icon of the Seas, the world’s largest cruise ship, during a media day preview as it prepares for its inaugural public voyage later this month, Thursday, Jan. 11, 2024, at PortMiami in Miami. Royal Caribbean’s Icon of the Seas is leaving South Florida on Saturday, Jan. 27, for its first seven-day island-hopping voyage through the tropics.(AP Photo/Rebecca Blackwell, File)

Inter Miami soccer player Lionel Messi, center, bumps fists with a member of the Red Hot Chilli Pipers bagpipe band, left, during a naming ceremony for Royal Caribbean International’s new cruise ship, Icon of the Seas, Tuesday, Jan. 23, 2024, in Miami. Inter Miami CF has formed a partnership with the cruise line Royal Caribbean International. At right is Jason Liberty, president and CEO of the Royal Caribbean Group. (AP Photo/Lynne Sladky)

MIAMI (AP) — The world’s largest cruise ship — the size of almost four city blocks — is set to begin its maiden voyage Saturday as it leaves from the Port of Miami.

Royal Caribbean’s Icon of the Seas runs nearly 1,200 feet (365 meters) from bow to stern.

The ship, which is leaving South Florida for its first seven-day island-hopping voyage through the tropics, was officially christened Tuesday with help from soccer legend Lionel Messi and his Inter Miami teammates.

At a glance

The Icon of the Seas:

• can carry up to 7,600 passengers and 2,350 crew members

The ship has:

• six waterslides
• seven swimming pools
• an ice-skating rink
• more than 40 restaurants, bars and lounges

“Icon of the Seas is the culmination of more than 50 years of dreaming, innovating and living our mission – to deliver the world’s best vacation experiences responsibly,” Royal Caribbean Group President and CEO Jason Liberty said earlier this week. “She is the ultimate multigenerational family vacation, forever changing the status quo in family travel and fulfilling vacation dreams for all ages on board.”

The ship sets sail as Royal Caribbean’s cruises are having a moment online. Since December, the company’s 9-month “Ultimate World Cruise” has captivated — and confused — a following of avid watchers on social media.

Millions are following the journey through the eyes of the passengers, as they live and post their lives aboard a vessel they’ll be on for nearly a year. If it sounds like a reality show, that’s exactly what some watchers have turned it into.

When the Icon of the Seas was first revealed in October 2022, the ship spurred the single largest booking day and the highest volume booking week in Royal Caribbean’s then 53-year history, according to the cruise line.

A dancer performs in front of Inter Miami soccer player Lionel Messi, second from left, seated, during an event on the world’s largest cruise ship Icon of the Seas, Tuesday, Jan. 23, 2024, in Miami. The MLS soccer team Inter Miami CF has formed a partnership with the cruise line Royal Caribbean International. (AP Photo/Lynne Sladky)

The Icon of the Seas is divided into eight neighborhoods across 20 decks. The ship includes six waterslides, seven swimming pools, an ice skating rink, a theater and more than 40 restaurants, bars and lounges. The ship can carry up to 7,600 passengers at maximum capacity, along with 2,350 crew members.

It is powered by six dual-fuel engines, which can be powered by liquefied natural gas (LNG), a fuel alternative that the Cruise Lines International Association says reduces sulfur and greenhouse gas emissions. However, some environmentalists worry LNG-powered ships increase methane emissions . Other say that vacationers generate eight times more carbon on a cruise than they do on land.

Royal Caribbean says every kilowatt used on the Icon of the Seas “is scrutinized for energy efficiencies and emission reductions.”

The top 10 biggest cruise ships in the world

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

A company is turning former cruise ships into floating hotels — see inside its largest 'floatel'

• Bridgemans ServicesGroup operates a fleet of former cruise ships turned into hotels. 
• Its "floatels" are designed to house workers during long-term projects.
• See its largest 652-cabin floatel with a game room and buffet.

Some old and unwanted cruise ships meet their demise at ship-breaking yards , where they are disassembled and sold for scrap.

Other vessels find a more fortunate fate, receiving a second chance to do what they already do best: serve as floating hotels.

Canada-based Bridgemans Services Group buys and charters former cruise ships to turn into "floatels," outfitted with standard cruise amenities like daily housekeeping, buffets, and relaxing lounges.

But the ships aren't designed to transport tourists from one destination to another anymore. Instead, companies turn to Bridgeman when they need to house workers for a long-term project, whether it be the construction of an offshore wind farm in Europe or the shooting of a major film in a remote destination.

Floatels can accommodate workers in remote destinations where hotels might not be an option.

In more metropolitan areas, Bridgemans says its ships could lessen the stress an inundation of workers might have on the local housing market.

And once they are no longer needed, the vessels depart and "leave no trace behind," the company said.

Over the last decade, Bridgemans has deployed its ships for 15 projects on every continent, Brian Grange, the company's president, told Business Insider.

Grange said that its deployments — most often for liquified natural gas companies — last for an average of two years.

In the past, it has also provided accommodations for MSC Cruises at its Ocean Cay private island and housing for more than 1,000 workers in the Philippines' on a project for the Manila International Airport during the COVID-19 pandemic.

The company's three ships range from 150 to 652 cabins.

The floatel operator acquired its largest ship, the 561-foot-long MV Isabelle X, in 2023.

In its past life, the 35-year-old vessel sailed around the Baltic Sea as one of Estonia-based Tallink Gruipp's cruise ships.

But gone are its days of leisurely cruising. The 35,000 gross-ton ship is now on its first deployment in Howe Sound, just north of Vancouver, where it's housing more than 600 workers who are building Woodfibre LNG's "net zero" LNG export facility.

Isabelle X underwent a six-month retrofit before it was sent to Howe Sound.

The process included updating the ship's cabins and adding amenities like a game room and an 8,000-square-foot gym.

The latter two are especially important: "We need to make sure we delineate between work and home," Grange told BI. "We have to create a social environment on board these vessels that makes it attractive for workforces around the world."

During their free time, workers can play billiards, relax in the outdoor lounge, or use the ship’s WiFi to catch up on social media.

The sports lounge has large television screens, while the games lounge has darts, ping pong tables, and air hockey.

The 'quiet lounges' are the go-to space for people who need to unwind after a long work day.

Or, they could recharge and catch up on the latest shows in their cabins, which all come with desks, storage, and 32-inch televisions.

Like a typical cruise ship, Bridgemans' vessels have buffets with live cooking stations, a dessert bar, and the occasional themed night.

The ships' chefs tailor their menus to the demographic and dietary restrictions of the workers on board, the company's president told BI.

Residents can expect at least four protein options, plenty of veggies, and handmade bread and desserts.

Unlike most cruise lines, Bridgemans can pre-purchase all the food it needs before deployment.

Grange says this allows the ships to maintain food quality and consistency in remote locations.

Remember that deployment in the Philippines during COVID-19? He said the ship had packed almost 800 tons of food ahead of the project.

He wouldn’t disclose the cost to rent one of Bridgemans’ floatels.

But he did note that the cost of a cabin on the Woodfibre LNG project in Howe Sound is comparable to a hotel room in nearby Vancouver, as is the case with most of its projects near major cities.

The company’s most recent acquisition, the 150-cabin Diamond XI, is currently being retrofitted and would be ready for deployment this year.

According to the company's president, the vessel is small and high-end, likely to be used for sporting events and movie shoots.

It could also be the start of a greater expansion: He hopes to add two or three more vessels to its fleet in the next five years.

"The world has opened up to this as a valued alternative to housing," Grange told BI.

Who knows, the next time you see a cruise ship off the coast, there's a slim but possible chance it could be housing workers — not vacationers.

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Los Angeles is about to get one of its biggest cruise ships ever

Cruise fans on the West Coast are about to have a major new option.

Cruise giant Royal Caribbean on Wednesday announced that its giant, amenity-packed Quantum of the Seas will sail from Los Angeles starting in October 2025. It'll become the largest Royal Caribbean ship ever to be based in the city.

The Miami-based line said the 4,180-passenger vessel will join its 3,388-passenger Navigator of the Seas in sailing year-round from LA, a major expansion for Royal Caribbean on the West Coast.

For more cruise news, guides and tips, sign up for TPG's cruise newsletter .

Like Navigator of the Seas, Quantum of the Seas will operate voyages from LA to the west coast of Mexico.

The ship's itineraries will range from two to six nights in length and bring calls at either Cabo San Lucas or Ensenada in Mexico — or both ports, depending on the departure date and length of the trip.

At 168,666 tons, Quantum of the Seas will be one of the biggest cruise ships ever from any cruise line to be deployed to LA.

Only Norwegian Cruise Line 's 3,998-passenger Norwegian Encore is bigger among vessels that have sailed out of LA — and only by a tad. Norwegian Encore measures 169,116 tons.

Two other Norwegian ships that sail from LA at times during the year, Norwegian Bliss and Norwegian Joy, are slightly smaller than Quantum of the Seas when measured by tonnage. They measure 168,028 tons and 167,725 tons, respectively.

Other major ships sailing regularly from LA — including Carnival Cruise Line 's Carnival Radiance and Carnival Panorama — are significantly smaller than Quantum of the Seas. Carnival Radiance and Carnival Panorama measure 102,000 tons and 133,500 tons, respectively.

Related: The best Royal Caribbean ships for every type of traveler

Another Carnival ship scheduled to begin sailings from LA in the coming months, Carnival Firenze, is also significantly smaller than Quantum of the Seas at 135,000 tons.

Quantum of the Seas will be the first vessel from Royal Caribbean's popular Quantum Class of ships to sail year-round from LA.

Unveiled in 2014, the Quantum Class is known as one of Royal Caribbean's most innovative series of ships ever. In addition to a wide range of restaurants, bars and showrooms, the five ships in the class feature some of the most unusual attractions you'll find at sea. This includes bumper car pavilions and skydiving simulators.

The ships also have glass-enclosed capsules mounted on mechanical arms that will take you soaring into the sky for bird's-eye views.

Quantum Class ships also feature unusual, multilevel entertainment spaces with floor-to-ceiling glass walls called Two70. The spaces are home to innovative shows that often feature aerial performers, singers and dancers who emerge from openings in the floor or the ceiling. At certain times of the day, the glass walls transform into an expansive ambient surface called Vistarama that projects real and imagined scenes.

Related: 35 tips and tricks that will make your Royal Caribbean cruise better

Royal Caribbean has operated Quantum Class ships out of Seattle during summers for sailings to Alaska, but a Quantum Class ship has never been based in California for sailings to Mexico.

Fares for Royal Caribbean's newly announced voyages from LA on Quantum of the Seas start at $141 per person, based on double occupancy, for a quick two-night voyage to Ensenada. Three-night sailings start at $240 per person, based on double occupancy. Four-night trips start at $271.

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