China Merchants Group ordered at Dalian Shipbuilding Industry Company (DSIC) two very large crude carriers with four rigid wing sails. The New Aden has now been delivered and features four wing sails, each approximately 130 feet tall, totaling nearly 13.000 square feet of sail area, made of carbon fibre composite material. The sails are trimmed by a fully automatic system. In 2018, China Merchants took delivery of the New Vitality, a 300,000 DWT tanker with two rigid wing sails.