| IMO | 9383936 |
|---|---|
| Gross tonnage | 226,838 GT |
| Length | 361.6 m |
| Beam | 47.0 m |
| Passenger capacity (max) | 6771 |
| Service speed | 22.0 knots |
| Builder | STX Finland |
| Yard | Perno shipyard |
| Launched | 2009 |
| Maiden voyage | 2009 |
| Class | Oasis-class cruise ship |
| Operator | Royal Caribbean International |
| Status | Active |
Overview
Oasis of the Seas is a cruise ship operated by Royal Caribbean International and the first ship of the Oasis class. On delivery in 2009 she was, briefly, the largest passenger ship in the world — a superlative that needs that date stamp, because she was soon passed, by very small margins, by her own sister ships, and the overall title later passed to Royal Caribbean's Icon class. Even stripped of the record, she remains historically important: she was the ship that proved a cruise vessel could be organised not as a single hull full of rooms, but as a series of distinct outdoor and indoor districts at a scale no line had attempted before.
She was ordered in February 2006, designed under the working name "Project Genesis," laid down in November 2007, and completed and delivered in October 2009. At the time of her construction she set a new capacity record, carrying more than 6,000 passengers. She has spent her whole career with a single operator and under a single name — an unusually settled history for a ship that changed so much about what the industry built next.
Key specifications
The dataset records Oasis of the Seas at 226,838 GT, 330.65 m long with a beam of 47.0 m, a maximum passenger capacity of 6,771 and a speed of 22.0 knots. That tonnage figure is itself a clue to her history: her gross tonnage at launch is widely reported as 225,282 GT, rising to the dataset figure when additional cabins were added to Deck 14 during her 2019 work. Her displacement has been estimated at around 100,000 tonnes, although displacement is not a figure the dataset records.
What matters for understanding the ship is the combination the figures describe: a very wide hull by earlier cruise-ship standards, a passenger count several times that of a traditional liner, and a speed in the low twenties — a ship designed to be a destination in herself on relatively short itineraries, rather than a fast point-to-point vessel.
Design and construction
Oasis of the Seas was built by STX Finland at the Perno shipyard in Turku — the yard recorded in the dataset as STX Finland's Perno facility, known in other sources as the Turku yard of STX Europe, formerly Aker Yards. Her keel was laid down on 12 November 2007. The design, developed as Project Genesis, was a deliberate step beyond Royal Caribbean's Freedom class, which had previously held the title of the world's largest cruise ships: the Oasis design was wider, substantially larger in tonnage, and, most importantly, differently organised inside.
The defining structural idea was the split superstructure. Instead of a solid block, the accommodation is divided, opening a canyon-like space down the middle of the ship open to the sky. That allowed genuinely outdoor public areas deep inside the hull's footprint, planted and overlooked by balcony cabins facing inward as well as outward. It is the single design decision from which almost everything else about the class follows, and it is why Oasis of the Seas, rather than a merely bigger predecessor, is treated as a turning point in cruise-ship design.
Naming, launch and maiden voyage
The dataset dates both her launch and her maiden voyage to 2009. Her float-out from the building dock in fact took place in November 2008, and she was completed and delivered in October 2009. The name Oasis of the Seas resulted from a competition held in May 2008 — a public naming contest rather than a name chosen privately by the line, which suited a ship Royal Caribbean was marketing as a new kind of resort as much as a new ship.
Career by operator
Oasis of the Seas has had one operator and one name throughout her career, so her career table is short:
| Period | Name | Operator |
|---|---|---|
| 2009–present | Oasis of the Seas | Royal Caribbean International |
That continuity is itself the story. Where many ships in this directory changed hands as operators failed or fleets were renewed, Oasis was built for a specific, long-term role in one fleet and has stayed in it. Her career milestones are therefore changes of standing, not of owner: she entered service as the world's largest passenger ship, was edged past by her sister Allure of the Seas — reported as longer by only about 50 millimetres — and then by later, larger sisters, while remaining one of the largest cruise ships in service.
Onboard character
The era-defining feature of Oasis of the Seas is her division into themed "neighbourhoods." Oasis-class ships are split into distinct districts — among them Central Park, the Boardwalk, the Royal Promenade and Entertainment Place — an idea borrowed from town planning rather than from earlier ship design. Central Park is an open-air garden area running down the middle of the ship, several decks high, with tropical planting, and the Boardwalk is an open-air, fairground-flavoured district with a working carousel. Balcony cabins overlook these internal outdoor spaces, so a passenger can have a balcony that faces a garden or a boardwalk rather than the ocean.
That is the character to remember, rather than any list of venues, which change with every refit. Before Oasis, a cruise ship's public rooms were interior spaces arranged along decks; after her, the largest ships were planned as collections of places, some of them outdoors and inside the ship at the same time. The sheer capacity that made contemporary headlines was a consequence of that layout, not the point of it.
Major refits and incidents
Two episodes dominate her refit and incident history. The first is the accident of 1 April 2019 at the Grand Bahama Shipyard in Freeport, where the ship was undergoing maintenance to her propulsion system. A drydock accident caused a construction crane — two cranes in the company's later reporting — to collapse onto the stern of the ship, damaging the AquaTheatre area and some suites. Eight people were injured, none, according to contemporary reporting, with life-threatening injuries. Sailings were cancelled, and because no suitable dock was immediately available nearby, the ship was taken to Cádiz, Spain, to complete the work, returning to service for a sailing in May 2019.
The second is her planned "Royal Amplified" refit later in 2019 — a major, roughly two-month programme of the kind Royal Caribbean applied across its fleet. It is during that work that her recorded tonnage rose to the dataset figure of 226,838 GT, with additional cabins added to Deck 14.
Sister ships and class
Oasis of the Seas is the lead ship of the Oasis class. She was joined by Allure of the Seas in December 2010, Harmony of the Seas in May 2016, Symphony of the Seas in April 2018, Wonder of the Seas in March 2022 and Utopia of the Seas in July 2024, with the class built first in Finland and later in France. Each of the early sisters was, on delivery, marginally larger than the one before, so the class held the title of the world's largest cruise ship in succession for well over a decade, until the Icon class took the overall lead.
Fate and where she is now
There is no fate to record in the usual sense: the dataset lists her status as active and her fate as "Operating," with Royal Caribbean International as both her original and current operator. She remains the first, and now the oldest, of the Oasis class — no longer the largest ship in the world, a title she held on delivery in 2009, but the ship that set the size, the layout and the ambitions that every subsequent member of her class, and the class that eventually surpassed her, was built to follow.
Sources: https://en.wikipedia.org/wiki/List_of_cruise_ships, https://en.wikipedia.org/wiki/MS_Oasis_of_the_Seas, https://en.wikipedia.org/wiki/Oasis_class, https://www.travelweekly.com/Cruise-Travel/Crane-collapse-damages-Oasis-of-the-Seas