German's TUI Group and Royal Caribbean of the US are continuing to expand their TUI Cruises joint venture with a new order for LNG-powered vessels.
The companies have picked Fincantieri in Italy for the two-ship contract.
The vessels are due in 2024 and 2026 from the Monfalcone yard, but no financial details are being revealed.
The deal will grow the Mein Schiff fleet to nine ships by 2026.
