Cruise majors are adding larger, more sophisticated ships to their fleets on a regular basis, with the new tonnage replacing older ships that are either sold off or have filtered down to other brands within the group.

The dilemma they face is that a large percentage of their fleets are usually made up of ships dating from the 1990s or early 2000s that are still economically viable but in need of updating so that the lines’ promised onboard experience is consistent across all ships.