Top 10 Largest Cruise Ships in the World 2015

Here is the list of the largest cruise ships in the world 2015. This list include the following cruise ships Norwegian Breakaway, Norwegian Epic, Royal Princess, Royal Princess, MSC Divina, Independence of the Seas, Liberty of the Seas, Freedom of the Seas, RMS Queen Mary 2, Allure of The Seas, Oasis of The Seas Though Allure and Oasis are two identical ships, Allure was built few centimeter longer than Oasis due to some measuring errors. I thought they were same and ranked them based on their cost. But