Following the acquisition of Mitsui E&S Shipbuilding from Mitsui E&S Holdings and the completion of its renaming, Japanese shipbuilder Tsuneishi Shipbuilding has finalized its internal group restructuring.
On November 4, Tsuneishi Shipbuilding announced on its official website that the company completed an internal group reorganization on November 1, 2025. Its subsidiaries Tsuneishi Miho Shipbuilding Co., Ltd. and Niigata Shipbuilding & Repair Co., Ltd. have merged to form Tsuneishi Miho Shipbuilding Co., Ltd.
Following the merger, the corporate websites of Tsuneishi Miho Shipbuilding and Niigata Shipbuilding & Repair will be integrated simultaneously. Product information, facility details, and other content previously published on the Niigata Shipbuilding & Repair website will be consolidated onto the Tsuneishi Miho Shipbuilding corporate website.
According to previously released information from Tsuneishi Shipbuilding, the restructured shipyard will be headquartered in Shimizu City, Shizuoka Prefecture, and led by Akito Danjo, the current president of Tsuneishi Miho Shipbuilding.
Records indicate that Niigata Shipbuilding & Repair was established in April 2003 with a registered capital of 300 million yen. Its primary operations include shipbuilding, repair, and steel structure manufacturing. It ranks among Japan’s few shipyards capable of constructing and repairing coast guard vessels, ferries, and coastal cargo ships. Tsuneishi Miho Shipbuilding was founded in 1919 with a registered capital of 50 million yen. Its primary operations encompass the construction, sale, and repair of various types of vessels.
Tsuneishi Shipbuilding emphasized that the merger of Niigata Shipbuilding & Repair into Tsuneishi Miho Shipbuilding will fully leverage the two shipyards’ long-standing technical expertise, shipbuilding and repair capabilities, and human resources. By strengthening the synergies between the two small-to-medium-sized shipbuilding companies, Tsuneishi Shipbuilding aims to enhance its overall competitiveness and help it achieve more efficient and flexible business operations through optimized resource allocation and simplified decision-making processes.
In addition to internal integration, Tsuneishi Shipbuilding has completed the acquisition of Mitsui E&S Shipbuilding, a subsidiary of Mitsui E&S Holdings, this year and renamed it Tsuneishi Solutions Tokyo Bay Co., Ltd.
In the middle of this year, Tsuneishi Shipbuilding acquired the remaining 34% stake in Mitsui E&S Shipbuilding for approximately 4.2 billion yen (approximately US$0.27 billion). Combined with the 49% and 17% stakes acquired in April 2021 and October 2022 respectively, Tsuneishi Shipbuilding has achieved full control of Mitsui E&S Shipbuilding, which also means that Tsuneishi Shipbuilding indirectly holds shares in Yangzi Mitsui Shipbuilding in China.
It is reported that Tsuneishi Shipbuilding, established in 1917, serves as the core company of Japan’s Tsuneishi Group, primarily responsible for shipbuilding and repair operations. With its Japanese Tsuneishi Shipyard (headquarters) and overseas shipyards in China and the Philippines, the company is capable of constructing various vessel types including bulk carriers, container vessels, and oil tankers.
Although Tsuneishi Shipbuilding is internationally renowned for constructing bulk carriers, particularly at its shipbuilding bases in the Philippines and China, it maintains significant competitiveness in Japan’s small-to-medium-sized vessel market. The company has explicitly stated that interest in these markets is growing amid rising demand for low-emission offshore transportation and next-generation coastal vessels.