1969
Sumitomo Heavy Industries established
The company joined forces with Uraga Heavy Industries, Ltd., a company first established as Uraga Dock Co., Ltd. in 1897 with the advocacy of Takeaki Enomoto. The company now operating as Sumitomo Heavy Industries, Ltd., opened up two large-scale plants, the Oppama Shipyard (currently known as the Yokosuka Works) and Toyo Works (currently known as the Saijo Works), establishing its foundations as a heavy industries company.