Green Sailing, a new German cruise shipping venture, is reported to plan to build eco friendly cruse ships that would use Flettner rotor technology to provide wind power and use LNG as fuel.

The ships would take 350 passengers each and cost between €100 million and €150 million each to build, a report on tradewindsnews.com says. An order is planned to be placed next year and the company plans to invest a total of €750 million in the fleet.