Under the contract, Meyer Werft will build each vessel with an accommodation capacity of more than 4,200 passengers and 1,700 crew, and gross tonnage of 164,600t.
The 334.6m-long ships represent the third and fourth in the Breakaway-Plus series. They are slated for delivery in mid-2018 and the fourth quarter of 2019 respectively.
Meyer Werft managing partner Bernard Meyer said: “We are thrilled that Norwegian Cruise Line has the continued confidence in Meyer Werft to expand their fleet.”
NCL plans to finance the transaction through export credit financing, which is arranged and underwritten by KfW IPEX-Bank.
As part of its efforts to promote freestyle cruising, NCL launched Norwegian Breakaway in May 2013 and Norwegian Getaway in February this year.
NCL CEO Kevin Sheehan said: “Norwegian Breakaway and Norwegian Getaway have proven themselves as industry game-changers and are extremely popular with our guests.
“It was only natural that we build on their success with this new ship order that further solidifies our long-term growth strategy.”
The first two vessels of the series, Norwegian Escape and Norwegian Bliss, are currently under construction with delivery scheduled in the fall of 2015 and spring of 2017 respectively.
The four ships on order will take the total fleet size of NCL to 17 by 2019.
Image: Norwegian Breakaway at Meyer Werft, Papenburg. Photo: courtesy of Dickelbers.