Founded as a steelmaker in 1912 and acquired Tsurumi Steelmaking and Shipbuilding Company in 1940. Renamed NKK Corporation in 1988. Merged with Hitachi Zosen in 2002 to form Universal Shipbuillding Corp. In 2013 merged with IHI Marine United, formed by Ishikawajima-Harima HI and Sumitomo Heavy Industries, to form Japan Marine United Corp.