The ships, which are due to be delivered in 2027 and 2028, will be modified to accommodate the use of green methanol as an alternative fuel source in the future.
However, additional modifications will be needed to fully enable the use of methanol in addition to traditional marine fuel on the ships.
The move comes as part of NCLH’s revamped climate action strategy, which sees the company target a reduction in greenhouse gas (GHG) intensity of 10% by 2026 and 25% by 2030.