Sweden's Stena group has added up to six more ships to its E-Flexer ro-ro series of newbuildings in China.
Stena RoRo has firmed up ships seven and eight at AVIC Weihai in China, while adding four optional ships at the same yard.
The latest two 3,600-lane-metre vessels can carry 1,200 people and will be operated by Stena Line.
They are larger than the previous units.
