https://en.wikipedia.org/wiki/List_of_largest_cruise_ships#:~:text=As%20of%20January%202022%2C%20the,holds%20up%20to%206%2C988%20passengers.

https://bestlifeonline.com/cruise-ship-facts/

https://stacker.com/stories/106/46-fascinating-facts-about-cruises

https://www.cruisecritic.com/articles.cfm?ID=2453

https://highseascruising.com/shocking-cruise-ship-facts-and-figures/