Korean owner HMM has sealed its huge boxship order at domestic yards DSME, Hyundai Heavy and Samsung.
HMM CEO Chang Keun Yoo signed for 20 vessels on Friday.
DSME and Samsung are building seven and five 23,000-teu units respectively, with delivery in the second quarter of 2020.
HHI will construct eight 15,300-teu units for handover in the second quarter of 2021.