Cruise ships have been getting bigger and more impressive in recent decades. Nowadays, some ships can hold up to thousands of passengers, not to mention they boast their own shops, restaurants, theatres and casinos, as well as pools and even, in some cases, zip lines or rollercoasters.
New cruise ships launch every year but what happens to the older vessels in cruise lines' fleets? When they're no longer needed, they're 'retired' from service.
This year, a number of ships are being retired - some earlier than planned due to the pandemic. For example, TUI's Marella Cruises is retiring Marella Dream, while Fred.
Olsen has said it will retire ships Boudicca and Black Watch and welcome two new ships instead. Carnival Cruises is also looking
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