A cruise ship is not just limited to a definition like a large boat on water for vacation purposes, but is more about unlocking new and diverse experiences. Cruises usually feature open-air parks, multi-deck water slides, glass-domed dive theaters, multiple restaurants, and many more entertainment options. So, the question arise it self that: what is the biggest cruise ship in the world? And it is because the larger the ship, the more experience you can have on your voyage.
Here's the part most travelers get wrong, and that is that size is not measured by weight but by a term called gross tonnage. This term is used for a ship's total internal volume across all enclosed spaces. By that, we can clearly say that the width and interior volume matter more than length alone. So, now that the basics have been cleared, and let's jump into the list of the biggest cruise ships in the world.
|
Rank |
Ship Name |
Cruise Line |
Debut Year |
Gross Tonnage |
Length (Feet) |
Passenger Capacity |
|
1 |
Icon of the Seas |
2024 |
248,663 |
1,196 |
7,600 |
|
|
2 |
Star of the Seas |
Royal Caribbean |
2025 |
248,663 |
1,196 |
7,600 |
|
3 |
Legend of the Seas |
Royal Caribbean |
2026 |
248,663 |
1,198 |
7,600 |
|
4 |
Utopia of the Seas |
Royal Caribbean |
2024 |
236,473 |
1,188 |
6,558 |
|
5 |
Wonder of the Seas |
Royal Caribbean |
2022 |
235,600 |
1,188 |
6,988 |
|
6 |
Symphony of the Seas |
Royal Caribbean |
2018 |
228,081 |
1,188 |
6,680 |
|
7 |
Harmony of the Seas |
Royal Caribbean |
2016 |
226,963 |
1,188 |
6,780 |
|
8 |
Oasis of the Seas |
Royal Caribbean |
2009 |
226,838 |
1,187 |
6,771 |
|
9 |
Allure of the Seas |
Royal Caribbean |
2010 |
225,282 |
1,187 |
6,784 |
|
10 |
MSC World America |
2025 |
216,638 |
1,092 |
6,762 |
The difference between the biggest length cruise and the actual largest one is totally clear. So, let's move one by one into every ship to find out what they offer you.
This is the ship that reset expectations for what a mega-vessel could be. Royal Caribbean built this not just with a design but with a vision. Here you can see a full water park with six slides, one of which drops straight off the side of the hull (not for the faint of heart).
Star of the Seas is the second Icon-Class ship on the list of the largest cruise ships in the world. Nevertheless, it preserves the same hull size but makes some corrections to the design in order to address some traffic issues on the Icon, in particular, around its main dining rooms, which become much more convenient during peak hours. There is no shadow of doubt that its Central Park is the centerpiece of the ship that stands as an outdoor promenade surrounded by live trees, cafes, and restaurants.
Legend pushes the Icon-Class series a step further with updated cabin layouts and refreshed technical systems under the hood. What you'll notice on deck is smarter foot traffic: the walkways near the main theater exits no longer jam up the way they can on older ships.
Even though the ship belongs to the Oasis Class, it is designed based on the latest designs of ships of Royal Caribbean. Therefore, there is no feeling that it is not a good ship since it is only because you will spend fewer days on board.
Before Icon of the Seas took the title, Wonder held the record for the world's biggest cruise ship. It introduced an eighth neighborhood built just for suite guests, with a private sun deck, pool, and restaurant reserved for that group. Children usually find themselves at Wonder Playscape, which is a playground with slides and climbing facilities outside, whereas adults who do not like the noise will find themselves at Solarium, a glass canopy-covered swimming pool for adults located at the forward part of the ship.
To start, it gives a wide bewith an excellent stability, so one may be surprised to note that it is a very secure ride even after a few days at sea in choppy waters. "Boardwalk" is a fun place that offers a wooden carousel, snack kiosks, and a great place to enjoy lunch, dinner, or drinks.
With Harmony, being the first Oasis-class cruise ship to feature multi-level water slides at the main pool deck, it set the precedent for all other family-oriented mega cruise ships to come after to try and live up to that standard.
The design is such that noisy areas are separate from tranquil areas. You can pick between zipping along on the high zip line nine decks above the Boardwalk or having fun in a simulated surfing experience. And this is not enough for yo so you have another option to uplift your experience, and that is the gardens of Central Park.
The Oasis of the Seas, which began it all, was the first ship to employ a split-hull approach, thus bringing in sunshine into the central portion of the ship and allowing for balcony cabins and gardens to be there where otherwise one would expect to find steel. Don't forget that it's new slides and updates to the dining areas and lounges, but the main attraction remains the Central Park.
Allure's strength is one of the classic choices: dozens of dining spots, evening venues, and open deck areas. All elements are there so that you can pick a quiet corner or a busy one depending on your mood that night. And gues what, a full-size sports court, surf simulators, and a zip line are standout attractions that give you a dose of adrenaline and entertainment at the same time.
This one was designed especially for North American guests, and this is clearly reflected in the design, such as the Y-shaped outdoor aft section. And most importantly, it leads into the open rear promenade that is not present in any other Royal Caribbean ship. The interior of the ship reflects a combo design of European and American that you see through its specialty restaurants, lounges, and many more entertainment options.
It's a mistaken belief that the "biggest ship" simply refers to the longest ship. In fact, the term refers to the ship's gross tonnage (GT) which is the ship's internal capacity without regard to weight, and a single gross ton represents about 100 cubic feet of interior space.
A higher GT means more room for the features that make these ships feel like resorts rather than boats:
Length overall (LOA) is the distance from bow to stern. Beam is the width at its widest point. The latest mega ships are competing to have a larger beam rather than length. It is additional beam that enables space for two-way surf simulators, two-way water slides, and large pool decks that are not crowded during a fully loaded voyage.
Forget the idea of one big dining room for the whole cruise. These ships spread dozens of complimentary and paid dining options across multiple decks — main dining rooms, buffets, grab-and-go cafes, and poolside grills at no extra cost, plus steakhouses, sushi bars, and Italian spots that charge a cover.
Bigger ships mean more real variety in where you sleep:
Book Shows According to Your Date of Boarding, NOT The Day Before!
There are thousands of passengers on each cruise ship, and shows tend to book up quickly. Secure your tickets on the cruise line's app for Broadway-style shows, ice shows, and AquaTheater performances as soon as possible, but definitely not "sometime during the cruise"!
No space for second thought as everything is clear in front of you regarding the biggest cruise ships in the world. And the chances are very high that you have already chosen your and even dreamt about your voyage on your favorite cruise. So, what holds you back from jumping on this cruise with your family, gang, buddy or with someone special to make your every moment into the worth story telling memories. Book your cruise and let the vacation smoothly go in the direction where you find endless sea view with endless opportunities for having fun.