Oasis class cruise ship
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| Class overview | |
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| Builders: | STX Finland Turku Shipyard, Finland & Chantiers de l'Atlantique, Saint-Nazaire, France |
| Operators: | Royal Caribbean International |
| Preceded by: | Freedom class |
| Succeeded by: | Quantum class |
| Built: | 2007–2010; 2013–2021 (planned) |
| In service: | 2009–present |
| Building: | 1 |
| Planned: | 5 |
| Completed: | 3 |
| Active: | 3 |
| General characteristics | |
| Type: | Cruise ship |
| Tonnage: | 225,282 GT–227,700 GT |
| Length: | 360 m (1,181 ft) overall |
| Beam: |
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| Height: | 72 m (236 ft) above water line |
| Draught: | 9.3 m (31 ft) |
| Depth: | 22.55 m (74 ft) |
| Decks: | 16 passenger decks |
| Installed power: | |
| Propulsion: | 3 × 20 MW ABB Azipod, all azimuthing |
| Speed: | 22.6 knots (41.9 km/h; 26.0 mph) |
| Capacity: | 5,400 passengers double occupancy; 6,296 total |
The Oasis class is a class of Royal Caribbean International cruise ships which are the world's largest passenger ships. The first two ships in the class, Oasis of the Seas and Allure of the Seas, were delivered respectively in 2009 and 2010 by STX Europe Turku Shipyard, Finland. A third Oasis class vessel, Harmony of the Seas, was delivered in 2016 by built by STX France, and a fourth vessel, MS Symphony of the Seas, will be completed in 2018. One additional unnamed ship is currently under construction and is expected to be delivered in 2021 respectively. The first two ships in the class Oasis of the Seas and Allure of the Seas are slightly exceeded in size by the third ship Harmony of the Seas, while the upcoming Symphony of the Seas and fifth ship are planned to be larger than all three, with a gross tonnage of 230,000 each.
The Oasis-class ships surpassed the earlier Freedom-class ships as the world's largest and longest passenger ships. Oasis also is 8.5 metres (28 ft) wider, and with a gross tonnage of 225,282, is almost 45% larger.Oasis-class vessels can carry over 5,400 passengers.
Oasis-class ships feature a split structure, with the 5-deck high "Central Park" and "Boardwalk" outdoor areas running down the middle of the ship. These areas feature lush tropical gardens, upscale restaurants, shops, and a working carousel.
The displacement—the actual mass—is estimated at approximately 100,000 metric tons, equivalent to the displacement of a Nimitz-class aircraft carrier.
To keep the ship stable without increasing the draft excessively, the designers created a wide hull. About 30 feet (9 m) of the ship sits beneath the water, a small percentage of the ship's overall height. Wide, shallow ships such as this tend to be "snappy", meaning that they can snap back upright after a wave has passed, which can be uncomfortable. This effect, however, is mitigated by the vessel's large size. The cruise ship's officers were pleased with the ship's stability and performance during the transatlantic crossing, when the vessel, in order to allow finishing work to go on, slowed and changed course in the face of winds "almost up to hurricane force" and seas in excess of 40 feet (12 m).
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