STX France has received a new order to build a fourth Oasis-class ship for Royal Caribbean Cruises, following the keel-laying of the third such ship at its shipyard in Saint-Nazaire, France.

The order was agreed by Royal Caribbean chairman and CEO Richard Fain and president and COO Adam Goldstein, along with STX France’s CEO Laurent Castaing.

Castaing said: "We are very excited that Royal Caribbean has agreed to move forward with a fourth Oasis-class ship, demonstrating their confidence in STX France to construct the most superior cruise ships in the world."

"We look forward to advancing the efficiencies of our ship-building process to produce the most innovative ships that vacationers have come to expect from Royal Caribbean."

The third and fourth Oasis-class ships will feature a split superstructure design, 16 decks with 2,700 staterooms, an 82ft long zipline, a hand-crafted carousel, the Rising Tide elevating bar, the AquaTheater high-diving performance venue, and the Central Park with more than 12,000 live trees and plants.

"Our ship-building process produces the most innovative ships that vacationers have come to expect from Royal Caribbean."

Additional amenities offered by the Oasis-class ships include twin FlowRider surf simulators, cantilevered whirlpools, an ice-skating rink, the children’s aqua park, the royal promenade, an interior boulevard and restaurants, and lounges and boutiques.

Both ships will join Oasis and Allure of the Seas, and will be more energy efficient than the existing ones.

The third Oasis-class ship is as yet unnamed and will be delivered in spring 2016. The fourth vessel is planned for delivery in 2018.

Image: Oasis of the Seas entering the port at Nassau, Bahamas. Photo: courtesy of Baldwin040.