The main purpose of a modern cruise ship in 2026 is to serve as a floating, all-inclusive destination resort that provides "seamless multi-destination travel." Unlike a traditional ocean liner, which was designed for point-to-point transportation (like crossing the Atlantic), a cruise ship is designed for the journey itself. Its primary goal is to provide a curated environment where dining, entertainment, accommodation, and transportation are bundled into a single experience. This allows travelers to visit multiple countries or islands without the stress of packing and unpacking, navigating foreign airports, or booking separate hotels. Beyond logistics, cruise ships are designed to cater to diverse demographics—from "floating cities" with water parks and theaters for families to boutique "expedition" vessels for luxury adventurers. Ultimately, a cruise ship's purpose is to maximize convenience and leisure, offering a controlled, safe, and highly serviced environment that allows passengers to "see the world" with the comforts of a high-end hotel following them from port to port.