Sumidagawa Shipbuilding

According to Wikipedia, in 1969 Sumidagawa Shipbuilding moved its head office and works to Shiomi, Kōtō-ku, after its land was bought for the construction of an expressway. Its head office is at Shiomi 2-1-16. Of the firms in Shiomi whose year of arrival this research could establish, it is the earliest.

After the reclamation was completed, Shiomi grew as a typical semi-industrial district of shipping warehouses, ironworks, shipyards and sanitation depots (Wikipedia). The Shiomi district town-planning policy revised in 2026 also names "shipbuilding and other businesses that make use of the waterside" as a characteristic of its canal-side "waterside harmony zone".