Norwegian Cruise Line Holdings has confirmed options to build fifth and sixth Project Leonardo-class ships for Norwegian Cruise Line with Fincantieri.

Frank del Rio, NCLH’s president and chief executive officer, said the decision to build two more 3,300 passenger-capacity ships, due for delivery in 2026 and 2027, showed “strong growth trajectory”.

He said: “Our six-ship Leonardo Class fleet will allow us to broaden our deployment into strong performing and mature unserved and underserved markets and offer new experiences to our guests.”

In a statement, the company said the focus of the new ships’ design was energy efficiency and building a size of vessel that would encourage broad deployment opportunities.

Andy Stuart, NCL’s president and chief executive officer, said: “The highly-anticipated Leonardo Class will fuel future growth with exciting and innovative offerings that will meaningfully drive demand from new and loyal returning guests alike.”

With Thursday’s announcement, NCLH has seven ships on order for Norwegian Cruise Line and one for Regent Seven Seas Cruises for delivery through 2027.

The company will take delivery of its newest ship, Norwegian Encore, in autumn 2019.