Oasis measures 225,282 gross tons, several times larger than Titanic. The ship's power comes from six marine diesel engines producing 18,860 kilowatts each and three similar 12-cylinder engines each producing 13,860 kilowatts. Oasis of the Seas will offer passengers features such as two-story loft suites and luxury suites measuring 1,600 sq ft (150 m2) with balconies overlooking the sea or promenades. The ship features a zip-line, a casino, a mini-golf course, four swimming pools, volleyball and basketball courts, theme parks and nurseries for children.
Another first-ever feature is a dedicated sports pool located in the main pool area. One of the two pools of the Freedom of the Seas is used almost exclusively for athletic pool games, ranging from basketball and volleyball to synchronized swimming. Other times, it will have designated lanes for lap swimming. The second pool is just for relaxing. At night, passengers can see this area transformed into an open-air nightclub with a large dance floor between the two pools.
Located at the heart of this largest cruise ship, the Royal Promenade is a 445-foot-long shopping, dining and entertainment boulevard that spans the length of an entire football field. At night, the Promenade hosts street parades, put on by select staff, commencing from a revolutionary new descending bridge amidst a fanfare of music, lasers and lights. Guests can also enjoy relaxed reading at the 3,600-volume Book Nook.
