{"id":25205,"date":"2024-05-23T09:00:00","date_gmt":"2024-05-23T00:00:00","guid":{"rendered":"https:\/\/www.tsuneishi-g.jp\/wp\/news\/\/2024\/05\/25205\/"},"modified":"2026-06-12T10:49:59","modified_gmt":"2026-06-12T01:49:59","slug":"tsuneishi-shipbuilding-announces-that-mitsui-es-shipbuilding-as-a-member-of-tsuneishi-group-has-acquired-all-shares-of-akishima-laboratory","status":"publish","type":"news","link":"https:\/\/www.tsuneishi-g.jp\/english\/news\/press\/2024\/05\/25205\/","title":{"rendered":"TSUNEISHI SHIPBUILDING announces that MITSUI E&#038;S SHIPBUILDING as a member of TSUNEISHI GROUP has acquired all shares of Akishima Laboratory"},"template":"","industry":[1129],"news-format":[1133],"news-tag":[],"enterprise":[1262,208],"news-cat":[1247,1210],"class_list":["post-25205","news","type-news","status-publish","hentry","industry-shipbuilding","news-format-press","enterprise-mitsui-es-shipbuilding","enterprise-tshipbuilding","news-cat-corporate-trends","news-cat-business-reports"],"pp_statuses_selecting_workflow":false,"pp_workflow_action":"current","pp_status_selection":"publish","acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"TSUNEISHI SHIPBUILDING Co., Ltd. (Fukuyama, Hiroshima, Japan; Representative Director: OKUMURA Sachio) announces that MITSUI E&amp;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. \u25a0Company Profile\uff1a Company Name\uff1aAkishima Laboratories (Mitsui Zosen) Inc. Main Business Activities\uff1aLaboratory for ship and marine fields with a focus on fluid mechanics, with test tanks and wind tunnels Foundation\uff1aJune 12, 1978 Representative\uff1aIGARASHI Kazuyuki Capital\uff1a200 million yen Shareholder\uff1aMITSUI E&amp;S SHIPBUILDING Co., Ltd.\uff08100\uff05\uff09 Head Office\uff1a1-50, Tsutsujigaoka 1-chome, Akishima, Tokyo 196-0012, Japan Facilities\uff1a \u30fbLarge Towing Tank\uff1aLength 220m x Breadth 14m x Depth 6.5m\uff08Water Depth 6m\uff09 \u30fbSmall Towing Tank\uff1aLength 100m x Breadth 5m x Depth 2.65m\uff08Water depth is changeable from 0.2m to 2.15m.\uff09 \u30fbCurrent Water Tank\uff1aOpen Channel\/ Length 55m x Breadth 8m x Depth 3m\uff08Water depth is changeable from 0.5 to 2.5m\uff09, Pit\/ Length 5m x Breadth 4m x Depth 2.5m \u30fbCavitation Tunnel\uff1aType of circulation: Vertical, Length 13.5m x Height: 7.0m \u30fbLow-Speed Wind Tunnel\uff1aLength 20m x Breadth 2m x Height 3m \u30fbScale Model Production\uff1aCapable of cutting model ships up to Length 10m x Breadth 2m x Depth 1m Employees\uff1a52 \uff08as of 1st April, 2024\uff09 URL\uff1ahttps:\/\/akishima-labo.co.jp\/en\/ \u25a0About Akishima Laboratories (Mitsui Zosen) Inc.\uff1a 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. \u25a0TOP Comments\uff1a OKUMURA Sachio, Representative Director, President and Chief Executive Officer of TSUNEISHI SHIPBUILDING, said: \u201cWe 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.\u201d \u25a0TSUNEISHI SHIPBUILDING Co., Ltd. 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: https:\/\/www.tsuneishi.co.jp\/english\/ Company ESG: https:\/\/www.tsuneishi.co.jp\/esg\/en\/ 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 HEAVY INDUSTRIES (CEBU), Inc. (Cebu, Philippines) http:\/\/www.thici.com\/ TSUNEISHI GROUP (ZHOUSHAN) SHIPBUILDING, INC. (Zhejiang, China) http:\/\/www.tsuneishi-zs.com\/en\/ TSUNEISHI IRON WORKS Co., Ltd. (Fukuyama City, Hiroshima Prefecture, Japan) https:\/\/www.tsuneishi-iw.jp\/ TSUNEISHI ENGINEERING Co., Ltd. (Fukuyama City, Hiroshima Prefecture, Japan) http:\/\/www.tsune-e.com\/ MIHO SHIPYARD Co., Ltd. (Shizuoka City, Shizuoka Prefecture, Japan) http:\/\/www.mihozosen.co.jp\/ KANDA DOCKYARD Co., Ltd. (Kure-shi, Hiroshima, Japan) https:\/\/kandadock.com\/ MITSUI E&amp;S SHIPBUILDING Co., Ltd. (Minato-ku, Tokyo, Japan) https:\/\/www.tsuneishi.co.jp\/mes-s\/ YURA DOCKYARD Co., Ltd. (Yura, Hidaka-gun, Wakayama Prefecture, Japan) https:\/\/www.yuradock.co.jp\/en NIIGATA SHIPBUILDING &amp; REPAIR, Inc. (Niigata City, Niigata Prefecture, Japan) https:\/\/www.tsuneishi.co.jp\/nsr\/ Akishima Laboratories (Mitsui Zosen) Inc. (Akishima, Tokyo, Japan) https:\/\/akishima-labo.co.jp\/en\/ For further information, please contact: Communication Dept. TSUNEISHI HOLDINGS CORPORATION TEL: +81-84-987-4915 Email: pr@tsuneishi.com\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"msvalidate.01\" content=\"C4AC19CFEA3F8366613E96D21044E7BB\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/www.tsuneishi-g.jp\/english\/news\/press\/2024\/05\/25205\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Tsuneishi Group\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"TSUNEISHI SHIPBUILDING announces that MITSUI E&amp;S SHIPBUILDING as a member of TSUNEISHI GROUP has acquired all shares of Akishima Laboratory | Tsuneishi Group\" \/>\n\t\t<meta property=\"og:description\" content=\"TSUNEISHI SHIPBUILDING Co., Ltd. (Fukuyama, Hiroshima, Japan; Representative Director: OKUMURA Sachio) announces that MITSUI E&amp;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. \u25a0Company Profile\uff1a Company Name\uff1aAkishima Laboratories (Mitsui Zosen) Inc. Main Business Activities\uff1aLaboratory for ship and marine fields with a focus on fluid mechanics, with test tanks and wind tunnels Foundation\uff1aJune 12, 1978 Representative\uff1aIGARASHI Kazuyuki Capital\uff1a200 million yen Shareholder\uff1aMITSUI E&amp;S SHIPBUILDING Co., Ltd.\uff08100\uff05\uff09 Head Office\uff1a1-50, Tsutsujigaoka 1-chome, Akishima, Tokyo 196-0012, Japan Facilities\uff1a \u30fbLarge Towing Tank\uff1aLength 220m x Breadth 14m x Depth 6.5m\uff08Water Depth 6m\uff09 \u30fbSmall Towing Tank\uff1aLength 100m x Breadth 5m x Depth 2.65m\uff08Water depth is changeable from 0.2m to 2.15m.\uff09 \u30fbCurrent Water Tank\uff1aOpen Channel\/ Length 55m x Breadth 8m x Depth 3m\uff08Water depth is changeable from 0.5 to 2.5m\uff09, Pit\/ Length 5m x Breadth 4m x Depth 2.5m \u30fbCavitation Tunnel\uff1aType of circulation: Vertical, Length 13.5m x Height: 7.0m \u30fbLow-Speed Wind Tunnel\uff1aLength 20m x Breadth 2m x Height 3m \u30fbScale Model Production\uff1aCapable of cutting model ships up to Length 10m x Breadth 2m x Depth 1m Employees\uff1a52 \uff08as of 1st April, 2024\uff09 URL\uff1ahttps:\/\/akishima-labo.co.jp\/en\/ \u25a0About Akishima Laboratories (Mitsui Zosen) Inc.\uff1a 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. \u25a0TOP Comments\uff1a OKUMURA Sachio, Representative Director, President and Chief Executive Officer of TSUNEISHI SHIPBUILDING, said: \u201cWe 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.\u201d \u25a0TSUNEISHI SHIPBUILDING Co., Ltd. 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: https:\/\/www.tsuneishi.co.jp\/english\/ Company ESG: https:\/\/www.tsuneishi.co.jp\/esg\/en\/ 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 HEAVY INDUSTRIES (CEBU), Inc. (Cebu, Philippines) http:\/\/www.thici.com\/ TSUNEISHI GROUP (ZHOUSHAN) SHIPBUILDING, INC. (Zhejiang, China) http:\/\/www.tsuneishi-zs.com\/en\/ TSUNEISHI IRON WORKS Co., Ltd. (Fukuyama City, Hiroshima Prefecture, Japan) https:\/\/www.tsuneishi-iw.jp\/ TSUNEISHI ENGINEERING Co., Ltd. (Fukuyama City, Hiroshima Prefecture, Japan) http:\/\/www.tsune-e.com\/ MIHO SHIPYARD Co., Ltd. (Shizuoka City, Shizuoka Prefecture, Japan) http:\/\/www.mihozosen.co.jp\/ KANDA DOCKYARD Co., Ltd. (Kure-shi, Hiroshima, Japan) https:\/\/kandadock.com\/ MITSUI E&amp;S SHIPBUILDING Co., Ltd. (Minato-ku, Tokyo, Japan) https:\/\/www.tsuneishi.co.jp\/mes-s\/ YURA DOCKYARD Co., Ltd. (Yura, Hidaka-gun, Wakayama Prefecture, Japan) https:\/\/www.yuradock.co.jp\/en NIIGATA SHIPBUILDING &amp; REPAIR, Inc. (Niigata City, Niigata Prefecture, Japan) https:\/\/www.tsuneishi.co.jp\/nsr\/ Akishima Laboratories (Mitsui Zosen) Inc. (Akishima, Tokyo, Japan) https:\/\/akishima-labo.co.jp\/en\/ For further information, please contact: Communication Dept. TSUNEISHI HOLDINGS CORPORATION TEL: +81-84-987-4915 Email: pr@tsuneishi.com\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/www.tsuneishi-g.jp\/english\/news\/press\/2024\/05\/25205\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/www.tsuneishi-g.jp\/wp\/wp-content\/uploads\/2025\/04\/IMG_9440.png\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/www.tsuneishi-g.jp\/wp\/wp-content\/uploads\/2025\/04\/IMG_9440.png\" \/>\n\t\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-05-23T00:00:00+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2026-06-12T01:49:59+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary\" \/>\n\t\t<meta name=\"twitter:title\" content=\"TSUNEISHI SHIPBUILDING announces that MITSUI E&amp;S SHIPBUILDING as a member of TSUNEISHI GROUP has acquired all shares of Akishima Laboratory | Tsuneishi Group\" \/>\n\t\t<meta name=\"twitter:description\" content=\"TSUNEISHI SHIPBUILDING Co., Ltd. (Fukuyama, Hiroshima, Japan; Representative Director: OKUMURA Sachio) announces that MITSUI E&amp;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. \u25a0Company Profile\uff1a Company Name\uff1aAkishima Laboratories (Mitsui Zosen) Inc. Main Business Activities\uff1aLaboratory for ship and marine fields with a focus on fluid mechanics, with test tanks and wind tunnels Foundation\uff1aJune 12, 1978 Representative\uff1aIGARASHI Kazuyuki Capital\uff1a200 million yen Shareholder\uff1aMITSUI E&amp;S SHIPBUILDING Co., Ltd.\uff08100\uff05\uff09 Head Office\uff1a1-50, Tsutsujigaoka 1-chome, Akishima, Tokyo 196-0012, Japan Facilities\uff1a \u30fbLarge Towing Tank\uff1aLength 220m x Breadth 14m x Depth 6.5m\uff08Water Depth 6m\uff09 \u30fbSmall Towing Tank\uff1aLength 100m x Breadth 5m x Depth 2.65m\uff08Water depth is changeable from 0.2m to 2.15m.\uff09 \u30fbCurrent Water Tank\uff1aOpen Channel\/ Length 55m x Breadth 8m x Depth 3m\uff08Water depth is changeable from 0.5 to 2.5m\uff09, Pit\/ Length 5m x Breadth 4m x Depth 2.5m \u30fbCavitation Tunnel\uff1aType of circulation: Vertical, Length 13.5m x Height: 7.0m \u30fbLow-Speed Wind Tunnel\uff1aLength 20m x Breadth 2m x Height 3m \u30fbScale Model Production\uff1aCapable of cutting model ships up to Length 10m x Breadth 2m x Depth 1m Employees\uff1a52 \uff08as of 1st April, 2024\uff09 URL\uff1ahttps:\/\/akishima-labo.co.jp\/en\/ \u25a0About Akishima Laboratories (Mitsui Zosen) Inc.\uff1a 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. \u25a0TOP Comments\uff1a OKUMURA Sachio, Representative Director, President and Chief Executive Officer of TSUNEISHI SHIPBUILDING, said: \u201cWe 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.\u201d \u25a0TSUNEISHI SHIPBUILDING Co., Ltd. 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: https:\/\/www.tsuneishi.co.jp\/english\/ Company ESG: https:\/\/www.tsuneishi.co.jp\/esg\/en\/ 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 HEAVY INDUSTRIES (CEBU), Inc. (Cebu, Philippines) http:\/\/www.thici.com\/ TSUNEISHI GROUP (ZHOUSHAN) SHIPBUILDING, INC. (Zhejiang, China) http:\/\/www.tsuneishi-zs.com\/en\/ TSUNEISHI IRON WORKS Co., Ltd. (Fukuyama City, Hiroshima Prefecture, Japan) https:\/\/www.tsuneishi-iw.jp\/ TSUNEISHI ENGINEERING Co., Ltd. (Fukuyama City, Hiroshima Prefecture, Japan) http:\/\/www.tsune-e.com\/ MIHO SHIPYARD Co., Ltd. (Shizuoka City, Shizuoka Prefecture, Japan) http:\/\/www.mihozosen.co.jp\/ KANDA DOCKYARD Co., Ltd. (Kure-shi, Hiroshima, Japan) https:\/\/kandadock.com\/ MITSUI E&amp;S SHIPBUILDING Co., Ltd. (Minato-ku, Tokyo, Japan) https:\/\/www.tsuneishi.co.jp\/mes-s\/ YURA DOCKYARD Co., Ltd. (Yura, Hidaka-gun, Wakayama Prefecture, Japan) https:\/\/www.yuradock.co.jp\/en NIIGATA SHIPBUILDING &amp; REPAIR, Inc. (Niigata City, Niigata Prefecture, Japan) https:\/\/www.tsuneishi.co.jp\/nsr\/ Akishima Laboratories (Mitsui Zosen) Inc. (Akishima, Tokyo, Japan) https:\/\/akishima-labo.co.jp\/en\/ For further information, please contact: Communication Dept. TSUNEISHI HOLDINGS CORPORATION TEL: +81-84-987-4915 Email: pr@tsuneishi.com\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/www.tsuneishi-g.jp\/wp\/wp-content\/uploads\/2025\/04\/IMG_9440.png\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.tsuneishi-g.jp\\\/english\\\/news\\\/press\\\/2024\\\/05\\\/25205\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.tsuneishi-g.jp\\\/english\\\/#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.tsuneishi-g.jp\\\/english\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.tsuneishi-g.jp\\\/english\\\/news\\\/#listItem\",\"name\":\"\\u30cb\\u30e5\\u30fc\\u30b9\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.tsuneishi-g.jp\\\/english\\\/news\\\/#listItem\",\"position\":2,\"name\":\"\\u30cb\\u30e5\\u30fc\\u30b9\",\"item\":\"https:\\\/\\\/www.tsuneishi-g.jp\\\/english\\\/news\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.tsuneishi-g.jp\\\/english\\\/industry\\\/shipbuilding\\\/#listItem\",\"name\":\"Shipbuilding\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.tsuneishi-g.jp\\\/english\\\/#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.tsuneishi-g.jp\\\/english\\\/industry\\\/shipbuilding\\\/#listItem\",\"position\":3,\"name\":\"Shipbuilding\",\"item\":\"https:\\\/\\\/www.tsuneishi-g.jp\\\/english\\\/industry\\\/shipbuilding\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.tsuneishi-g.jp\\\/english\\\/news\\\/press\\\/2024\\\/05\\\/25205\\\/#listItem\",\"name\":\"TSUNEISHI SHIPBUILDING announces that MITSUI E&#038;S SHIPBUILDING as a member of TSUNEISHI GROUP has acquired all shares of Akishima Laboratory\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.tsuneishi-g.jp\\\/english\\\/news\\\/#listItem\",\"name\":\"\\u30cb\\u30e5\\u30fc\\u30b9\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.tsuneishi-g.jp\\\/english\\\/news\\\/press\\\/2024\\\/05\\\/25205\\\/#listItem\",\"position\":4,\"name\":\"TSUNEISHI SHIPBUILDING announces that MITSUI E&#038;S SHIPBUILDING as a member of TSUNEISHI GROUP has acquired all shares of Akishima Laboratory\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.tsuneishi-g.jp\\\/english\\\/industry\\\/shipbuilding\\\/#listItem\",\"name\":\"Shipbuilding\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.tsuneishi-g.jp\\\/english\\\/#organization\",\"name\":\"Tsuneishi Group\",\"description\":\"This is the TSUNEISHI Group portal site. 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(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. \\u25a0Company Profile\\uff1a Company Name\\uff1aAkishima Laboratories (Mitsui Zosen) Inc. Main Business Activities\\uff1aLaboratory for ship and marine fields with a focus on fluid mechanics, with test tanks and wind tunnels Foundation\\uff1aJune 12, 1978 Representative\\uff1aIGARASHI Kazuyuki Capital\\uff1a200 million yen Shareholder\\uff1aMITSUI E&S SHIPBUILDING Co., Ltd.\\uff08100\\uff05\\uff09 Head Office\\uff1a1-50, Tsutsujigaoka 1-chome, Akishima, Tokyo 196-0012, Japan Facilities\\uff1a \\u30fbLarge Towing Tank\\uff1aLength 220m x Breadth 14m x Depth 6.5m\\uff08Water Depth 6m\\uff09 \\u30fbSmall Towing Tank\\uff1aLength 100m x Breadth 5m x Depth 2.65m\\uff08Water depth is changeable from 0.2m to 2.15m.\\uff09 \\u30fbCurrent Water Tank\\uff1aOpen Channel\\\/ Length 55m x Breadth 8m x Depth 3m\\uff08Water depth is changeable from 0.5 to 2.5m\\uff09, Pit\\\/ Length 5m x Breadth 4m x Depth 2.5m \\u30fbCavitation Tunnel\\uff1aType of circulation: Vertical, Length 13.5m x Height: 7.0m \\u30fbLow-Speed Wind Tunnel\\uff1aLength 20m x Breadth 2m x Height 3m \\u30fbScale Model Production\\uff1aCapable of cutting model ships up to Length 10m x Breadth 2m x Depth 1m Employees\\uff1a52 \\uff08as of 1st April, 2024\\uff09 URL\\uff1ahttps:\\\/\\\/akishima-labo.co.jp\\\/en\\\/ \\u25a0About Akishima Laboratories (Mitsui Zosen) Inc.\\uff1a 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. \\u25a0TOP Comments\\uff1a OKUMURA Sachio, Representative Director, President and Chief Executive Officer of TSUNEISHI SHIPBUILDING, said: \\u201cWe 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.\\u201d \\u25a0TSUNEISHI SHIPBUILDING Co., Ltd. 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: https:\\\/\\\/www.tsuneishi.co.jp\\\/english\\\/ Company ESG: https:\\\/\\\/www.tsuneishi.co.jp\\\/esg\\\/en\\\/ 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 HEAVY INDUSTRIES (CEBU), Inc. (Cebu, Philippines) http:\\\/\\\/www.thici.com\\\/ TSUNEISHI GROUP (ZHOUSHAN) SHIPBUILDING, INC. (Zhejiang, China) http:\\\/\\\/www.tsuneishi-zs.com\\\/en\\\/ TSUNEISHI IRON WORKS Co., Ltd. (Fukuyama City, Hiroshima Prefecture, Japan) https:\\\/\\\/www.tsuneishi-iw.jp\\\/ TSUNEISHI ENGINEERING Co., Ltd. (Fukuyama City, Hiroshima Prefecture, Japan) http:\\\/\\\/www.tsune-e.com\\\/ MIHO SHIPYARD Co., Ltd. (Shizuoka City, Shizuoka Prefecture, Japan) http:\\\/\\\/www.mihozosen.co.jp\\\/ KANDA DOCKYARD Co., Ltd. (Kure-shi, Hiroshima, Japan) https:\\\/\\\/kandadock.com\\\/ MITSUI E&S SHIPBUILDING Co., Ltd. (Minato-ku, Tokyo, Japan) https:\\\/\\\/www.tsuneishi.co.jp\\\/mes-s\\\/ YURA DOCKYARD Co., Ltd. (Yura, Hidaka-gun, Wakayama Prefecture, Japan) https:\\\/\\\/www.yuradock.co.jp\\\/en NIIGATA SHIPBUILDING & REPAIR, Inc. (Niigata City, Niigata Prefecture, Japan) https:\\\/\\\/www.tsuneishi.co.jp\\\/nsr\\\/ Akishima Laboratories (Mitsui Zosen) Inc. (Akishima, Tokyo, Japan) https:\\\/\\\/akishima-labo.co.jp\\\/en\\\/ For further information, please contact: Communication Dept. TSUNEISHI HOLDINGS CORPORATION TEL: +81-84-987-4915 Email: pr@tsuneishi.com\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.tsuneishi-g.jp\\\/english\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.tsuneishi-g.jp\\\/english\\\/news\\\/press\\\/2024\\\/05\\\/25205\\\/#breadcrumblist\"},\"datePublished\":\"2024-05-23T09:00:00+09:00\",\"dateModified\":\"2026-06-12T10:49:59+09:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.tsuneishi-g.jp\\\/english\\\/#website\",\"url\":\"https:\\\/\\\/www.tsuneishi-g.jp\\\/english\\\/\",\"name\":\"Tsuneishi Group\",\"description\":\"This is the TSUNEISHI Group portal site. A corporate group headquartered in Hiroshima that develops shipbuilding, shipping, environment, energy, life & resort businesses.\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.tsuneishi-g.jp\\\/english\\\/#organization\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"TSUNEISHI SHIPBUILDING announces that MITSUI E&S SHIPBUILDING as a member of TSUNEISHI GROUP has acquired all shares of Akishima Laboratory | Tsuneishi Group","description":"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. \u25a0Company Profile\uff1a Company Name\uff1aAkishima Laboratories (Mitsui Zosen) Inc. Main Business Activities\uff1aLaboratory for ship and marine fields with a focus on fluid mechanics, with test tanks and wind tunnels Foundation\uff1aJune 12, 1978 Representative\uff1aIGARASHI Kazuyuki Capital\uff1a200 million yen Shareholder\uff1aMITSUI E&S SHIPBUILDING Co., Ltd.\uff08100\uff05\uff09 Head Office\uff1a1-50, Tsutsujigaoka 1-chome, Akishima, Tokyo 196-0012, Japan Facilities\uff1a \u30fbLarge Towing Tank\uff1aLength 220m x Breadth 14m x Depth 6.5m\uff08Water Depth 6m\uff09 \u30fbSmall Towing Tank\uff1aLength 100m x Breadth 5m x Depth 2.65m\uff08Water depth is changeable from 0.2m to 2.15m.\uff09 \u30fbCurrent Water Tank\uff1aOpen Channel\/ Length 55m x Breadth 8m x Depth 3m\uff08Water depth is changeable from 0.5 to 2.5m\uff09, Pit\/ Length 5m x Breadth 4m x Depth 2.5m \u30fbCavitation Tunnel\uff1aType of circulation: Vertical, Length 13.5m x Height: 7.0m \u30fbLow-Speed Wind Tunnel\uff1aLength 20m x Breadth 2m x Height 3m \u30fbScale Model Production\uff1aCapable of cutting model ships up to Length 10m x Breadth 2m x Depth 1m Employees\uff1a52 \uff08as of 1st April, 2024\uff09 URL\uff1ahttps:\/\/akishima-labo.co.jp\/en\/ \u25a0About Akishima Laboratories (Mitsui Zosen) Inc.\uff1a 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. \u25a0TOP Comments\uff1a OKUMURA Sachio, Representative Director, President and Chief Executive Officer of TSUNEISHI SHIPBUILDING, said: \u201cWe 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.\u201d \u25a0TSUNEISHI SHIPBUILDING Co., Ltd. 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: https:\/\/www.tsuneishi.co.jp\/english\/ Company ESG: https:\/\/www.tsuneishi.co.jp\/esg\/en\/ 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 HEAVY INDUSTRIES (CEBU), Inc. (Cebu, Philippines) http:\/\/www.thici.com\/ TSUNEISHI GROUP (ZHOUSHAN) SHIPBUILDING, INC. (Zhejiang, China) http:\/\/www.tsuneishi-zs.com\/en\/ TSUNEISHI IRON WORKS Co., Ltd. (Fukuyama City, Hiroshima Prefecture, Japan) https:\/\/www.tsuneishi-iw.jp\/ TSUNEISHI ENGINEERING Co., Ltd. (Fukuyama City, Hiroshima Prefecture, Japan) http:\/\/www.tsune-e.com\/ MIHO SHIPYARD Co., Ltd. (Shizuoka City, Shizuoka Prefecture, Japan) http:\/\/www.mihozosen.co.jp\/ KANDA DOCKYARD Co., Ltd. (Kure-shi, Hiroshima, Japan) https:\/\/kandadock.com\/ MITSUI E&S SHIPBUILDING Co., Ltd. (Minato-ku, Tokyo, Japan) https:\/\/www.tsuneishi.co.jp\/mes-s\/ YURA DOCKYARD Co., Ltd. (Yura, Hidaka-gun, Wakayama Prefecture, Japan) https:\/\/www.yuradock.co.jp\/en NIIGATA SHIPBUILDING & REPAIR, Inc. (Niigata City, Niigata Prefecture, Japan) https:\/\/www.tsuneishi.co.jp\/nsr\/ Akishima Laboratories (Mitsui Zosen) Inc. (Akishima, Tokyo, Japan) https:\/\/akishima-labo.co.jp\/en\/ For further information, please contact: Communication Dept. TSUNEISHI HOLDINGS CORPORATION TEL: +81-84-987-4915 Email: pr@tsuneishi.com","canonical_url":"https:\/\/www.tsuneishi-g.jp\/english\/news\/press\/2024\/05\/25205\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"msvalidate.01":"C4AC19CFEA3F8366613E96D21044E7BB","miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/www.tsuneishi-g.jp\/english\/news\/press\/2024\/05\/25205\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/www.tsuneishi-g.jp\/english\/#listItem","position":1,"name":"Home","item":"https:\/\/www.tsuneishi-g.jp\/english\/","nextItem":{"@type":"ListItem","@id":"https:\/\/www.tsuneishi-g.jp\/english\/news\/#listItem","name":"\u30cb\u30e5\u30fc\u30b9"}},{"@type":"ListItem","@id":"https:\/\/www.tsuneishi-g.jp\/english\/news\/#listItem","position":2,"name":"\u30cb\u30e5\u30fc\u30b9","item":"https:\/\/www.tsuneishi-g.jp\/english\/news\/","nextItem":{"@type":"ListItem","@id":"https:\/\/www.tsuneishi-g.jp\/english\/industry\/shipbuilding\/#listItem","name":"Shipbuilding"},"previousItem":{"@type":"ListItem","@id":"https:\/\/www.tsuneishi-g.jp\/english\/#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/www.tsuneishi-g.jp\/english\/industry\/shipbuilding\/#listItem","position":3,"name":"Shipbuilding","item":"https:\/\/www.tsuneishi-g.jp\/english\/industry\/shipbuilding\/","nextItem":{"@type":"ListItem","@id":"https:\/\/www.tsuneishi-g.jp\/english\/news\/press\/2024\/05\/25205\/#listItem","name":"TSUNEISHI SHIPBUILDING announces that MITSUI E&#038;S SHIPBUILDING as a member of TSUNEISHI GROUP has acquired all shares of Akishima Laboratory"},"previousItem":{"@type":"ListItem","@id":"https:\/\/www.tsuneishi-g.jp\/english\/news\/#listItem","name":"\u30cb\u30e5\u30fc\u30b9"}},{"@type":"ListItem","@id":"https:\/\/www.tsuneishi-g.jp\/english\/news\/press\/2024\/05\/25205\/#listItem","position":4,"name":"TSUNEISHI SHIPBUILDING announces that MITSUI E&#038;S SHIPBUILDING as a member of TSUNEISHI GROUP has acquired all shares of Akishima Laboratory","previousItem":{"@type":"ListItem","@id":"https:\/\/www.tsuneishi-g.jp\/english\/industry\/shipbuilding\/#listItem","name":"Shipbuilding"}}]},{"@type":"Organization","@id":"https:\/\/www.tsuneishi-g.jp\/english\/#organization","name":"Tsuneishi Group","description":"This is the TSUNEISHI Group portal site. A corporate group headquartered in Hiroshima that develops shipbuilding, shipping, environment, energy, life & resort businesses.","url":"https:\/\/www.tsuneishi-g.jp\/english\/"},{"@type":"WebPage","@id":"https:\/\/www.tsuneishi-g.jp\/english\/news\/press\/2024\/05\/25205\/#webpage","url":"https:\/\/www.tsuneishi-g.jp\/english\/news\/press\/2024\/05\/25205\/","name":"TSUNEISHI SHIPBUILDING announces that MITSUI E&S SHIPBUILDING as a member of TSUNEISHI GROUP has acquired all shares of Akishima Laboratory | Tsuneishi Group","description":"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. \u25a0Company Profile\uff1a Company Name\uff1aAkishima Laboratories (Mitsui Zosen) Inc. Main Business Activities\uff1aLaboratory for ship and marine fields with a focus on fluid mechanics, with test tanks and wind tunnels Foundation\uff1aJune 12, 1978 Representative\uff1aIGARASHI Kazuyuki Capital\uff1a200 million yen Shareholder\uff1aMITSUI E&S SHIPBUILDING Co., Ltd.\uff08100\uff05\uff09 Head Office\uff1a1-50, Tsutsujigaoka 1-chome, Akishima, Tokyo 196-0012, Japan Facilities\uff1a \u30fbLarge Towing Tank\uff1aLength 220m x Breadth 14m x Depth 6.5m\uff08Water Depth 6m\uff09 \u30fbSmall Towing Tank\uff1aLength 100m x Breadth 5m x Depth 2.65m\uff08Water depth is changeable from 0.2m to 2.15m.\uff09 \u30fbCurrent Water Tank\uff1aOpen Channel\/ Length 55m x Breadth 8m x Depth 3m\uff08Water depth is changeable from 0.5 to 2.5m\uff09, Pit\/ Length 5m x Breadth 4m x Depth 2.5m \u30fbCavitation Tunnel\uff1aType of circulation: Vertical, Length 13.5m x Height: 7.0m \u30fbLow-Speed Wind Tunnel\uff1aLength 20m x Breadth 2m x Height 3m \u30fbScale Model Production\uff1aCapable of cutting model ships up to Length 10m x Breadth 2m x Depth 1m Employees\uff1a52 \uff08as of 1st April, 2024\uff09 URL\uff1ahttps:\/\/akishima-labo.co.jp\/en\/ \u25a0About Akishima Laboratories (Mitsui Zosen) Inc.\uff1a 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. \u25a0TOP Comments\uff1a OKUMURA Sachio, Representative Director, President and Chief Executive Officer of TSUNEISHI SHIPBUILDING, said: \u201cWe 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.\u201d \u25a0TSUNEISHI SHIPBUILDING Co., Ltd. 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: https:\/\/www.tsuneishi.co.jp\/english\/ Company ESG: https:\/\/www.tsuneishi.co.jp\/esg\/en\/ 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 HEAVY INDUSTRIES (CEBU), Inc. (Cebu, Philippines) http:\/\/www.thici.com\/ TSUNEISHI GROUP (ZHOUSHAN) SHIPBUILDING, INC. (Zhejiang, China) http:\/\/www.tsuneishi-zs.com\/en\/ TSUNEISHI IRON WORKS Co., Ltd. (Fukuyama City, Hiroshima Prefecture, Japan) https:\/\/www.tsuneishi-iw.jp\/ TSUNEISHI ENGINEERING Co., Ltd. (Fukuyama City, Hiroshima Prefecture, Japan) http:\/\/www.tsune-e.com\/ MIHO SHIPYARD Co., Ltd. (Shizuoka City, Shizuoka Prefecture, Japan) http:\/\/www.mihozosen.co.jp\/ KANDA DOCKYARD Co., Ltd. (Kure-shi, Hiroshima, Japan) https:\/\/kandadock.com\/ MITSUI E&S SHIPBUILDING Co., Ltd. (Minato-ku, Tokyo, Japan) https:\/\/www.tsuneishi.co.jp\/mes-s\/ YURA DOCKYARD Co., Ltd. (Yura, Hidaka-gun, Wakayama Prefecture, Japan) https:\/\/www.yuradock.co.jp\/en NIIGATA SHIPBUILDING & REPAIR, Inc. (Niigata City, Niigata Prefecture, Japan) https:\/\/www.tsuneishi.co.jp\/nsr\/ Akishima Laboratories (Mitsui Zosen) Inc. (Akishima, Tokyo, Japan) https:\/\/akishima-labo.co.jp\/en\/ For further information, please contact: Communication Dept. TSUNEISHI HOLDINGS CORPORATION TEL: +81-84-987-4915 Email: pr@tsuneishi.com","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/www.tsuneishi-g.jp\/english\/#website"},"breadcrumb":{"@id":"https:\/\/www.tsuneishi-g.jp\/english\/news\/press\/2024\/05\/25205\/#breadcrumblist"},"datePublished":"2024-05-23T09:00:00+09:00","dateModified":"2026-06-12T10:49:59+09:00"},{"@type":"WebSite","@id":"https:\/\/www.tsuneishi-g.jp\/english\/#website","url":"https:\/\/www.tsuneishi-g.jp\/english\/","name":"Tsuneishi Group","description":"This is the TSUNEISHI Group portal site. A corporate group headquartered in Hiroshima that develops shipbuilding, shipping, environment, energy, life & resort businesses.","inLanguage":"en-US","publisher":{"@id":"https:\/\/www.tsuneishi-g.jp\/english\/#organization"}}]},"og:locale":"en_US","og:site_name":"Tsuneishi Group","og:type":"article","og:title":"TSUNEISHI SHIPBUILDING announces that MITSUI E&amp;S SHIPBUILDING as a member of TSUNEISHI GROUP has acquired all shares of Akishima Laboratory | Tsuneishi Group","og:description":"TSUNEISHI SHIPBUILDING Co., Ltd. (Fukuyama, Hiroshima, Japan; Representative Director: OKUMURA Sachio) announces that MITSUI E&amp;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. \u25a0Company Profile\uff1a Company Name\uff1aAkishima Laboratories (Mitsui Zosen) Inc. Main Business Activities\uff1aLaboratory for ship and marine fields with a focus on fluid mechanics, with test tanks and wind tunnels Foundation\uff1aJune 12, 1978 Representative\uff1aIGARASHI Kazuyuki Capital\uff1a200 million yen Shareholder\uff1aMITSUI E&amp;S SHIPBUILDING Co., Ltd.\uff08100\uff05\uff09 Head Office\uff1a1-50, Tsutsujigaoka 1-chome, Akishima, Tokyo 196-0012, Japan Facilities\uff1a \u30fbLarge Towing Tank\uff1aLength 220m x Breadth 14m x Depth 6.5m\uff08Water Depth 6m\uff09 \u30fbSmall Towing Tank\uff1aLength 100m x Breadth 5m x Depth 2.65m\uff08Water depth is changeable from 0.2m to 2.15m.\uff09 \u30fbCurrent Water Tank\uff1aOpen Channel\/ Length 55m x Breadth 8m x Depth 3m\uff08Water depth is changeable from 0.5 to 2.5m\uff09, Pit\/ Length 5m x Breadth 4m x Depth 2.5m \u30fbCavitation Tunnel\uff1aType of circulation: Vertical, Length 13.5m x Height: 7.0m \u30fbLow-Speed Wind Tunnel\uff1aLength 20m x Breadth 2m x Height 3m \u30fbScale Model Production\uff1aCapable of cutting model ships up to Length 10m x Breadth 2m x Depth 1m Employees\uff1a52 \uff08as of 1st April, 2024\uff09 URL\uff1ahttps:\/\/akishima-labo.co.jp\/en\/ \u25a0About Akishima Laboratories (Mitsui Zosen) Inc.\uff1a 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. \u25a0TOP Comments\uff1a OKUMURA Sachio, Representative Director, President and Chief Executive Officer of TSUNEISHI SHIPBUILDING, said: \u201cWe 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.\u201d \u25a0TSUNEISHI SHIPBUILDING Co., Ltd. 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: https:\/\/www.tsuneishi.co.jp\/english\/ Company ESG: https:\/\/www.tsuneishi.co.jp\/esg\/en\/ 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 HEAVY INDUSTRIES (CEBU), Inc. (Cebu, Philippines) http:\/\/www.thici.com\/ TSUNEISHI GROUP (ZHOUSHAN) SHIPBUILDING, INC. (Zhejiang, China) http:\/\/www.tsuneishi-zs.com\/en\/ TSUNEISHI IRON WORKS Co., Ltd. (Fukuyama City, Hiroshima Prefecture, Japan) https:\/\/www.tsuneishi-iw.jp\/ TSUNEISHI ENGINEERING Co., Ltd. (Fukuyama City, Hiroshima Prefecture, Japan) http:\/\/www.tsune-e.com\/ MIHO SHIPYARD Co., Ltd. (Shizuoka City, Shizuoka Prefecture, Japan) http:\/\/www.mihozosen.co.jp\/ KANDA DOCKYARD Co., Ltd. (Kure-shi, Hiroshima, Japan) https:\/\/kandadock.com\/ MITSUI E&amp;S SHIPBUILDING Co., Ltd. (Minato-ku, Tokyo, Japan) https:\/\/www.tsuneishi.co.jp\/mes-s\/ YURA DOCKYARD Co., Ltd. (Yura, Hidaka-gun, Wakayama Prefecture, Japan) https:\/\/www.yuradock.co.jp\/en NIIGATA SHIPBUILDING &amp; REPAIR, Inc. (Niigata City, Niigata Prefecture, Japan) https:\/\/www.tsuneishi.co.jp\/nsr\/ Akishima Laboratories (Mitsui Zosen) Inc. (Akishima, Tokyo, Japan) https:\/\/akishima-labo.co.jp\/en\/ For further information, please contact: Communication Dept. TSUNEISHI HOLDINGS CORPORATION TEL: +81-84-987-4915 Email: pr@tsuneishi.com","og:url":"https:\/\/www.tsuneishi-g.jp\/english\/news\/press\/2024\/05\/25205\/","og:image":"https:\/\/www.tsuneishi-g.jp\/wp\/wp-content\/uploads\/2025\/04\/IMG_9440.png","og:image:secure_url":"https:\/\/www.tsuneishi-g.jp\/wp\/wp-content\/uploads\/2025\/04\/IMG_9440.png","og:image:width":1200,"og:image:height":630,"article:published_time":"2024-05-23T00:00:00+00:00","article:modified_time":"2026-06-12T01:49:59+00:00","twitter:card":"summary","twitter:title":"TSUNEISHI SHIPBUILDING announces that MITSUI E&amp;S SHIPBUILDING as a member of TSUNEISHI GROUP has acquired all shares of Akishima Laboratory | Tsuneishi Group","twitter:description":"TSUNEISHI SHIPBUILDING Co., Ltd. (Fukuyama, Hiroshima, Japan; Representative Director: OKUMURA Sachio) announces that MITSUI E&amp;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. \u25a0Company Profile\uff1a Company Name\uff1aAkishima Laboratories (Mitsui Zosen) Inc. Main Business Activities\uff1aLaboratory for ship and marine fields with a focus on fluid mechanics, with test tanks and wind tunnels Foundation\uff1aJune 12, 1978 Representative\uff1aIGARASHI Kazuyuki Capital\uff1a200 million yen Shareholder\uff1aMITSUI E&amp;S SHIPBUILDING Co., Ltd.\uff08100\uff05\uff09 Head Office\uff1a1-50, Tsutsujigaoka 1-chome, Akishima, Tokyo 196-0012, Japan Facilities\uff1a \u30fbLarge Towing Tank\uff1aLength 220m x Breadth 14m x Depth 6.5m\uff08Water Depth 6m\uff09 \u30fbSmall Towing Tank\uff1aLength 100m x Breadth 5m x Depth 2.65m\uff08Water depth is changeable from 0.2m to 2.15m.\uff09 \u30fbCurrent Water Tank\uff1aOpen Channel\/ Length 55m x Breadth 8m x Depth 3m\uff08Water depth is changeable from 0.5 to 2.5m\uff09, Pit\/ Length 5m x Breadth 4m x Depth 2.5m \u30fbCavitation Tunnel\uff1aType of circulation: Vertical, Length 13.5m x Height: 7.0m \u30fbLow-Speed Wind Tunnel\uff1aLength 20m x Breadth 2m x Height 3m \u30fbScale Model Production\uff1aCapable of cutting model ships up to Length 10m x Breadth 2m x Depth 1m Employees\uff1a52 \uff08as of 1st April, 2024\uff09 URL\uff1ahttps:\/\/akishima-labo.co.jp\/en\/ \u25a0About Akishima Laboratories (Mitsui Zosen) Inc.\uff1a 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. \u25a0TOP Comments\uff1a OKUMURA Sachio, Representative Director, President and Chief Executive Officer of TSUNEISHI SHIPBUILDING, said: \u201cWe 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.\u201d \u25a0TSUNEISHI SHIPBUILDING Co., Ltd. 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: https:\/\/www.tsuneishi.co.jp\/english\/ Company ESG: https:\/\/www.tsuneishi.co.jp\/esg\/en\/ 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 HEAVY INDUSTRIES (CEBU), Inc. (Cebu, Philippines) http:\/\/www.thici.com\/ TSUNEISHI GROUP (ZHOUSHAN) SHIPBUILDING, INC. (Zhejiang, China) http:\/\/www.tsuneishi-zs.com\/en\/ TSUNEISHI IRON WORKS Co., Ltd. (Fukuyama City, Hiroshima Prefecture, Japan) https:\/\/www.tsuneishi-iw.jp\/ TSUNEISHI ENGINEERING Co., Ltd. (Fukuyama City, Hiroshima Prefecture, Japan) http:\/\/www.tsune-e.com\/ MIHO SHIPYARD Co., Ltd. (Shizuoka City, Shizuoka Prefecture, Japan) http:\/\/www.mihozosen.co.jp\/ KANDA DOCKYARD Co., Ltd. (Kure-shi, Hiroshima, Japan) https:\/\/kandadock.com\/ MITSUI E&amp;S SHIPBUILDING Co., Ltd. (Minato-ku, Tokyo, Japan) https:\/\/www.tsuneishi.co.jp\/mes-s\/ YURA DOCKYARD Co., Ltd. (Yura, Hidaka-gun, Wakayama Prefecture, Japan) https:\/\/www.yuradock.co.jp\/en NIIGATA SHIPBUILDING &amp; REPAIR, Inc. (Niigata City, Niigata Prefecture, Japan) https:\/\/www.tsuneishi.co.jp\/nsr\/ Akishima Laboratories (Mitsui Zosen) Inc. (Akishima, Tokyo, Japan) https:\/\/akishima-labo.co.jp\/en\/ For further information, please contact: Communication Dept. TSUNEISHI HOLDINGS CORPORATION TEL: +81-84-987-4915 Email: pr@tsuneishi.com","twitter:image":"https:\/\/www.tsuneishi-g.jp\/wp\/wp-content\/uploads\/2025\/04\/IMG_9440.png"},"aioseo_meta_data":{"post_id":"25205","title":null,"description":null,"keywords":null,"keyphrases":{"focus":{"keyphrase":"","score":0,"analysis":{"keyphraseInTitle":{"score":0,"maxScore":9,"error":1}}},"additional":[]},"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":"","og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"WebPage","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":"-1","robots_max_videopreview":"-1","robots_max_imagepreview":"large","priority":null,"frequency":"default","local_seo":null,"breadcrumb_settings":null,"limit_modified_date":false,"ai":{"faqs":[],"keyPoints":[],"schemas":[],"titles":[],"descriptions":[],"socialPosts":{"email":[],"linkedin":[],"twitter":[],"facebook":[],"instagram":[]}},"created":"2025-04-19 14:26:56","updated":"2026-06-12 04:30:11","seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/www.tsuneishi-g.jp\/english\/\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">\u00bb<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/www.tsuneishi-g.jp\/english\/news\/\" title=\"\u30cb\u30e5\u30fc\u30b9\">\u30cb\u30e5\u30fc\u30b9<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">\u00bb<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/www.tsuneishi-g.jp\/english\/industry\/shipbuilding\/\" title=\"Shipbuilding\">Shipbuilding<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">\u00bb<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tTSUNEISHI SHIPBUILDING announces that MITSUI E&amp;S SHIPBUILDING as a member of TSUNEISHI GROUP has acquired all shares of Akishima Laboratory\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/www.tsuneishi-g.jp\/english\/"},{"label":"\u30cb\u30e5\u30fc\u30b9","link":"https:\/\/www.tsuneishi-g.jp\/english\/news\/"},{"label":"Shipbuilding","link":"https:\/\/www.tsuneishi-g.jp\/english\/industry\/shipbuilding\/"},{"label":"TSUNEISHI SHIPBUILDING announces that MITSUI E&#038;S SHIPBUILDING as a member of TSUNEISHI GROUP has acquired all shares of Akishima Laboratory","link":"https:\/\/www.tsuneishi-g.jp\/english\/news\/press\/2024\/05\/25205\/"}],"_links":{"self":[{"href":"https:\/\/www.tsuneishi-g.jp\/english\/wp-json\/wp\/v2\/news\/25205","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tsuneishi-g.jp\/english\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/www.tsuneishi-g.jp\/english\/wp-json\/wp\/v2\/types\/news"}],"wp:attachment":[{"href":"https:\/\/www.tsuneishi-g.jp\/english\/wp-json\/wp\/v2\/media?parent=25205"}],"wp:term":[{"taxonomy":"industry","embeddable":true,"href":"https:\/\/www.tsuneishi-g.jp\/english\/wp-json\/wp\/v2\/industry?post=25205"},{"taxonomy":"news-format","embeddable":true,"href":"https:\/\/www.tsuneishi-g.jp\/english\/wp-json\/wp\/v2\/news-format?post=25205"},{"taxonomy":"news-tag","embeddable":true,"href":"https:\/\/www.tsuneishi-g.jp\/english\/wp-json\/wp\/v2\/news-tag?post=25205"},{"taxonomy":"enterprise","embeddable":true,"href":"https:\/\/www.tsuneishi-g.jp\/english\/wp-json\/wp\/v2\/enterprise?post=25205"},{"taxonomy":"news-cat","embeddable":true,"href":"https:\/\/www.tsuneishi-g.jp\/english\/wp-json\/wp\/v2\/news-cat?post=25205"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}