[1] The modifications that are to be made to the design for the future Prima-class ships would result in an extra 1.2 billion euros in shipbuilding costs — about $1.27 billion.

The third and fourth Prima-class ships will debut in 2025 and 2026 and will be around 10 percent bigger in gross tonnage than the Norwegian Prima, the first in the NCL's new class of ships.

The fifth and sixth Prima-class ships will be 20 percent larger, making them the largest in the entire fleet, and they will debut in 2027 and 2028.

[5][6] The ships will measure 140,000 gross tonnage (GT) and accommodate approximately 3,300 guests.

[7] In 2022, Norwegian Cruise Line announced that the third to sixth vessels would have a higher passenger capacity of 3,550 guests.