ship on the Anthem of the Seas in partnership with Puzzle Break, billed the "Escape from the Future." Spectrum of the Seas was the first Quantum-class ship to install Sky Pad, a virtual reality experience with a trampoline and bungee ropes for guests to undergo different simulations and play interactive games. Like the earlier and Oasis-class ships, the "Sports Court" on the aft of deck 15 features a complimentary Wave Loch Flowrider surf simulator and a rock-climbing wall. Other complimentary outdoor features are located on deck 14, including an outdoor pool with a large video screen, an indoor pool with a retractable roof, an indoor "Solarium" with an adults-only pool, and the "H2O Zone" kids' water park, featuring the first wave pool on a cruise ship, and at least four whirlpools. Throughout the ship, staples included on recent Royal Caribbean ships that are also in Quantum-class ships include a Spa and Fitness Center on decks 15 and 16, the "Adventure Ocean" kids club on decks 11 and 12, a Broadway-style "The Royal Theater" on decks 3–5, and a casino on deck 3. Unlike the earlier Voyager, Freedom, and Oasis classes, Quantum-class ships do not feature a Viking Crown Lounge or ice skating rink, and the Royal Promenade mall down the center of the ship is replaced with the two-story "Royal Esplanade". Engineering Quantum-class ships are powered by two Azipod XO thrusters that have a capacity of and four bow thrusters with a power output of each. The diesel-electric propulsion system powers the ships for a cruising speed of . Wärtsilä provides the two scrubbers on each ship that enable a reduced sulfur emission output and a cleaner exhaust. Quantum-class ships use an air lubrication system (ALS) to reduce the friction in the water in order to improve the performance of the vessel during cruising. Ships References External links Meyer Werft Ship Yard official website. Royal Caribbean official website. Ships built in Papenburg Cruise ship classes Royal Caribbean International