MSC World America isn’t the largest cruise ship at sea, but she is the largest in the MSC Cruises’ fleet and the eighth largest ship in the world. She is also the biggest vessel I have ever personally sailed on.
I was lucky enough to be onboard for the new mega-ship’s naming ceremony on April 9, 2025, and stayed for a mini preview cruise ahead of her maiden voyage with my husband.
One moment I’ll never forget is standing at the stern (or back) of the ship on the Promenade on Deck 8 on embarkation day, overlooking multi-story buildings. At only Deck 8, we were already so high up that my husband and I had to take a pause and really marvel at the size of the ship.
This moment – and several like it during my sailing – also inspired me to take a deep dive into just how big MSC World America really is.
How Big is MSC World America?
Let’s take a look at the numbers to really appreciate the size of MSC’s new LNG-powered mega-ship.
The Gross Tonnage
Let’s start with the gross tonnage, which is arguably the most important metric because it gives a full picture of the ship’s internal volume. MSC World America comes in at a whopping 216,638-gross tons.
This makes her bigger than her older sister ship, MSC World Europa, which is 215,863 gross tons.
The Stats: Length, Width, and Height

The length of the cruise ship measures the distance from the very front of the ship (the bow) to the very back of the vessel (the stern).
In the case of MSC World America, she is 333.3 meters long (or 1,094 feet). For context, an American football field is 360 feet long, making MSC’s newest addition just over three times that length.
In terms of width, which is the distance between the most outer sides of the hull, the young cruise ship comes in at 47 meters (or 154.2 feet) wide.
Read Also: Just How Big is a Cruise Ship?
Last but not least, MSC World America is 77.15 meters (or 253 feet) tall – with guests getting access to 16 of her 22 decks.
Considering an average apartment building is about 12 feet high for every story, this puts the ship’s height on par with that of a 20 or 21-story apartment building.
These metrics ultimately equate to 38,400 square meters (or 413,334.16 square feet) of public space for guests to enjoy.
Passenger and Crew Capacity Onboard

While the ship won’t always be at maximum capacity, especially during non-peak seasons, it has room for 6,764 passengers on every voyage.
Of course, it’s not only the guests onboard, but also the crew members who are making sure every sailing runs smoothly. The ship has a capacity for 2,138 crew members – although the actual number may fluctuate slightly.
In total, your sailing could have 8,902 people onboard if it reaches maximum capacity – which is really equivalent to the population of a small town or city.
How does MSC World America’s Size Compare?

As the eighth largest cruise ship in the world, MSC World America is truly a sight to behold. But to put things in perspective, let’s take a second to compare how big she is when stacked against some of the other giants sailing the high seas.
Royal Caribbean’s Icon of the Seas maintains its spot as the largest cruise ship in the world – while the Oasis-class ships also pull ahead.
That said, MSC World America does surpass the size of its older sister, MSC World Europa, and P&O Cruises’ Arvia, which is the current 10th largest cruise ship in the world.
She is also bigger than ships like P&O Cruises Iona, which ranks just outside of the top ten biggest cruise ships.
| Ship Name | Gross Tons | Maximum Guest Capacity | Crew Capacity | Length | Passenger Decks |
|---|---|---|---|---|---|
| Icon of the Seas | 250,800 | 7,600 | 2,350 | 1,198 ft | 18 |
| Oasis of the Seas | 226,838 | 6,699 | 2,109 | 1,187 ft | 18 |
| MSC World America | 216,638 | 6,764 | 2,138 | 1,094 ft | 16 |
| MSC World Europa | 215,863 | 6,762 | 2,138 | 1,094 ft | 16 |
| Arvia | 184,700 | 5,200 | 1,800 | 1,130 ft | 15 |
| Iona | 184,089 | 5,200 | 1,762 | 1,128 ft | 15 |
More Room Means More Fun
Going bigger doesn’t mean that there is empty space onboard. In fact, it is quite the opposite! Nearly every inch of MSC World America is filled with something fun or something tasty to enjoy.
For example, there are 20 different pools and whirlpools onboard – although a couple of these are for the exclusive use of MSC Yacht Club guests.

There are also 19 different dining venues, including four main restaurants, two buffets, and six specialty dining restaurants – with MSC World America being the first cruise ship to introduce Eataly at Sea.
Additionally, guests looking for a refreshing drink or lighter bites can visit 18 different bars and lounges onboard – which are not included in the count for the 19 dining venues.
Finally, there are two main performance venues onboard (or three if you count the light shows and parades that occasionally take place in the Promenade on Deck 8).
The World Theatre hosts large-scale productions and has a capacity for 1,150 guests, while the Panorama Lounge can host 462 people at every show.
A Different Type of Organization

Partly to help orient guests on such a massive vessel, MSC World America has been divided into seven different districts – which each offer their own unique vibes and experiences.
Royal Caribbean’s Oasis of the Seas pioneered the idea of dividing ships into sections, or neighborhoods, in 2009 – and the idea has caught on for the mega-ships of today.
In the case of MSC World America, these distinct districts include the Zen Area, Family Aventura, Aqua Deck, Promenade, Galleria, The Terraces, and MSC Yacht Club.
I will say, as someone who gets lost very easily, I had no trouble navigating the ship – largely thanks to the map in the MSC for Me App and maps placed at every elevator bay.
The Accommodations

As is the case with all cruise ships, MSC World America features an array of cabin choices – from more basic interior cabins to luxurious suites.
Read Also: What Are the Best Rooms on a Cruise Ship?
In total, there are 2,614 cruise cabins onboard with 19 different cabin types for guests to choose from. This number also includes 152 Yacht Club suites with butler service, though additional suites are available outside of the Yacht Club section.
For additional context, this is slightly less than the 2,633 staterooms onboard MSC World Europa – even though the younger sister ship is slightly bigger overall.
Final Thoughts: How Big is Too Big?

As someone who tends to prefer more medium-sized cruise ships, I was worried I would be overwhelmed by the size of MSC World America.
But while I could see crowds being a factor during peak sailings or not being able to explore everything on shorter sailings, that could be true on any cruise ship.
I was never overwhelmed – and certainly never bored – and have come to believe that the size of MSC World America is part of what makes her one of the most innovative vessels currently cruising the high seas.










