"How old is the Island Princess cruise ship?" is an interrogative sentence that seeks information about the age of the vessel. For instance, the Island Princess cruise ship, launched in 2003, is about 20 years old.
Knowing the age of a cruise ship can be important for assessing its condition and safety. Older ships may require more frequent maintenance and may not have the same amenities as newer ships. Additionally, the age of a ship can be a factor in its resale value.