Cruise lines hope to begin boarding passengers later this year as they bounce back from Covid-19, but they may then run into another big problem: overcapacity.

Carnival Corp, the world's largest cruiseship owner, has already aired plans to scrap some vessels, and other companies will probably follow suit, but the sector may still end up with too many berths from orders placed before the pandemic brought cruising to its knees, according to Maritime Strategies International (MSI).