The Shanghai-listed firm is paying $33.7m apiece for the 36,000-dwtvessels, it said in an exchange filing.
Nacks will deliver the first two ships in 2015 with the othertwo to follow a year later.
A 50/50 joint venture between Cosco and Japan’s Kawasaki HeavyIndstries, Nacks has an orderbook of 18 vessels including the latest duo,according to Clarksons.
The remaining vessels comprise seven 60,000-dwt bulkcarriers, six 13,500-teu boxships, two multipurpose/heavylift vessels and asingle VLCC.
