Norway's DSD Shipping has added to its ro-pax orderbook at the Remontowa yard in Poland.
Its Norled unit has contracted two 395-passenger ships for delivery in February and May, 2020, brokers said.
No price has been given for the order.
The company already has two 296-pax ferries due from the Polish yard in 2019, plus two passengerships contracted at GS Marine in Norway for delivery in the same year.
The tanker and ferry group has a fleet of 22 operational ships and 11 newbuildings on order, including five MRs at Hyundai Vinashin.