Mitsui Kinkai, the short-sea subsidiary of Japan’s Mitsui OSK Lines, has ordered three 17,500-dwt tweendeckers at Onomichi Dockyard to boost the environmental performance of its fleet.

The vessels meet the Energy Efficiency Design Index (EEDI) Phase III regulation for newbuildings.

They are also designed to reduce carbon emissions by 18% compared with Mitsui Kinkai’s current tweendecker fleet.

No price has been announced for the orders, which will be delivered in 2022 and 2023.