Allure of the Seas, the sister ship of Oasis of the Seas, has been handed over to Royal Caribbean Cruises Ltd (RCCL) by STX Europe's shipyard in Turku, Finland. The 361 meter long ultra modern vessel is powered by six Wärtsilä 46 engines, including three 12-cylinder and three 16-cylinder Wärtsilä 46 engines in V-configuration, and Wärtsilä 7500-horsepower bow thrusters with a combined power output of some 20 MW that make the vessel easy to manoeuvre. Over the decades, Royal Caribbean International has had several of the world's most innovative ships in its fleet…