Press Releases

TSUNEISHI SHIPBUILDING announces that MITSUI E&S SHIPBUILDING as a member of TSUNEISHI GROUP has acquired all shares of Akishima Laboratory

May 23, 2024

TSUNEISHI SHIPBUILDING Co., Ltd. (Fukuyama, Hiroshima, Japan; Representative Director: OKUMURA Sachio) announces that MITSUI E&S SHIPBUILDING Co., Ltd. (Minato-ku, Tokyo, Japan; Representative Director: KOHATAKE Yasunori) as a member of TSUNEISHI GROUP has acquired all shares of Akishima Laboratories (Mitsui Zosen) Inc. (Akishima, Tokyo, Japan; Representative Director: IGARASHI Kazuyuki).

TSUNEISHI GROUP will improve our product development and competitiveness through activation of research into automatic and autonomous navigation technology, which has been carried out in Akishima Lab and realization of an increase in the field of hydrodynamic design by being able to carry out a wide range of ship model basins and wind tunnels. Furthermore, by using the Current Water Tank which is one of the features of Akishima Lab, we expect increased opportunities for launching a business in a new field external shipbuilding field such as developed of offshore wind and wave power generation and mooring analysis technology for ships and offshore structures.

■Company Profile:
Company Name:Akishima Laboratories (Mitsui Zosen) Inc.
Main Business Activities:Laboratory for ship and marine fields with a focus on fluid mechanics, with test tanks and wind tunnels
Foundation:June 12, 1978
Representative:IGARASHI Kazuyuki
Capital:200 million yen
Shareholder:MITSUI E&S SHIPBUILDING Co., Ltd.(100%)
Head Office:1-50, Tsutsujigaoka 1-chome, Akishima, Tokyo 196-0012, Japan
・Large Towing Tank:Length 220m x Breadth 14m x Depth 6.5m(Water Depth 6m)
・Small Towing Tank:Length 100m x Breadth 5m x Depth 2.65m(Water depth is changeable from 0.2m to 2.15m.)
・Current Water Tank:Open Channel/ Length 55m x Breadth 8m x Depth 3m(Water depth is changeable from 0.5 to 2.5m), Pit/ Length 5m x Breadth 4m x Depth 2.5m
・Cavitation Tunnel:Type of circulation: Vertical, Length 13.5m x Height: 7.0m
・Low-Speed Wind Tunnel:Length 20m x Breadth 2m x Height 3m
・Scale Model Production:Capable of cutting model ships up to Length 10m x Breadth 2m x Depth 1m
Employees:52 (as of 1st April, 2024)

■About Akishima Laboratories (Mitsui Zosen) Inc.:
Akishima Lab has various types of facilities, such as towing tanks and wind tunnels, and plays a role as a technological base as a research company with its core technology in the maritime fields, mainly in fluid dynamics. In addition, Akishima Lab contributes to the development of society, including the maritime industry, by undertaking various experiments using owned facilities and by providing various engineering and products using the technologies it has developed over many years.

■TOP Comments:
OKUMURA Sachio, Representative Director, President and Chief Executive Officer of TSUNEISHI SHIPBUILDING, said: “We are very pleased to welcome Akishima Laboratories, who with its high technological capabilities and tradition, as our group. By accelerating the development of environmental and digital technologies through Akishima Laboratories, we will promote the development and achievement of eco-ships and new fuel vessels, which will be even more necessary in the future to reduce environmental impact.”

TSUNEISHI SHIPBUILDING (HQ: 1083 Tsuneishi, Numakuma-cho, Fukuyama, Hiroshima, Japan) engages in shipbuilding and repairs, and is the anchor company of the TSUNEISHI Group, which conducts business mainly in the shipbuilding industry and maritime transport. With manufacturing bases in Japan (Tsuneishi Factory, the HQ), Philippines, and China, the company builds bulk carriers, container carriers, tankers, etc.

Company info:
Company ESG:

Representative Director, President and Chief Executive Officer: OKUMURA Sachio
Business: Shipbuilding and repair
Founded: July 1917 (Taisho 6)
Capital: 100 million yen
Employees: 817 (as of 1st January 2024)
Headquarters: Fukuyama City, Hiroshima Prefecture, Japan (Main Factory)

Shipbuilding Business Affiliates:
TSUNEISHI IRON WORKS Co., Ltd. (Fukuyama City, Hiroshima Prefecture, Japan)
TSUNEISHI ENGINEERING Co., Ltd. (Fukuyama City, Hiroshima Prefecture, Japan)
MIHO SHIPYARD Co., Ltd. (Shizuoka City, Shizuoka Prefecture, Japan)
KANDA DOCKYARD Co., Ltd. (Kure-shi, Hiroshima, Japan)
MITSUI E&S SHIPBUILDING Co., Ltd. (Minato-ku, Tokyo, Japan)
YURA DOCKYARD Co., Ltd. (Yura, Hidaka-gun, Wakayama Prefecture, Japan)
NIIGATA SHIPBUILDING & REPAIR, Inc. (Niigata City, Niigata Prefecture, Japan)
Akishima Laboratories (Mitsui Zosen) Inc. (Akishima, Tokyo, Japan)
For further information, please contact:
Communication Dept.
TEL: +81-84-987-4915

  • Large Towing Tank

    Large Towing Tank