{"id":25201,"date":"2024-06-13T10:00:00","date_gmt":"2024-06-12T16:00:00","guid":{"rendered":"https:\/\/www.tsuneishi-g.jp\/wp\/news\/\/2024\/06\/25201\/"},"modified":"2026-06-12T10:49:46","modified_gmt":"2026-06-12T01:49:46","slug":"tsuneishi-shipbuilding-commercialise-a-new-device-for-energy-saving","status":"publish","type":"news","link":"https:\/\/www.tsuneishi-g.jp\/english\/news\/press\/2024\/06\/25201\/","title":{"rendered":"TSUNEISHI SHIPBUILDING Commercialise a New Device for Energy-Saving"},"template":"","industry":[1129],"news-format":[1133],"news-tag":[],"enterprise":[208],"news-cat":[1248,1246],"class_list":["post-25201","news","type-news","status-publish","hentry","industry-shipbuilding","news-format-press","enterprise-tshipbuilding","news-cat-products","news-cat-technology-development"],"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 it commercialises the Rigid Sail as a new device for energy-saving in cooperation with Mitsui E&amp;S Shipbuilding Co., Ltd. (Minato-ku, Tokyo, Japan; Representative Director: KOHATAKE Yasunori) and Akishima Laboratories (Mitsui Zosen) Inc. (Akishima, Tokyo, Japan; Representative Director: IGARASHI Kazuyuki). The Rigid Sail has wing-shape sail that keeps the shape even in wind. It is auxiliary propulsion devices that generates propulsive force and saves energy using offshore wind as natural energy. This Rigid Sail can be installed on existing vessels with minimal modification. To aim at realisation of retractable Rigid Sail, shape, arrangement and control system of the Rigid Sail are studied and designed. Our group plans to install it on an actual vessel in 2026 and commercialise it in 2027. TSUNEISHI SHIPBUILDING will coordinate the entire development project and design and manufacture the equipment, Mitsui E&amp;S Shipbuilding will study the control system and sail shape, and Akishima Laboratories will carry out performance evaluation using fluid analysis (CFD analysis) and other methods on the developed Rigid Sail. The TSUNEISHI Group will continue to contribute to further GHG reductions through energy savings and improved hull performance by utilising the research, development and experimental functions of the grouped Akishima Laboratory, including this project. \u25a0 TSUNEISHI 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 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\/06\/25201\/\" \/>\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 Commercialise a New Device for Energy-Saving | Tsuneishi Group\" \/>\n\t\t<meta property=\"og:description\" content=\"TSUNEISHI SHIPBUILDING Co., Ltd. (Fukuyama, Hiroshima, Japan; Representative Director: OKUMURA Sachio) announces that it commercialises the Rigid Sail as a new device for energy-saving in cooperation with Mitsui E&amp;S Shipbuilding Co., Ltd. (Minato-ku, Tokyo, Japan; Representative Director: KOHATAKE Yasunori) and Akishima Laboratories (Mitsui Zosen) Inc. (Akishima, Tokyo, Japan; Representative Director: IGARASHI Kazuyuki). The Rigid Sail has wing-shape sail that keeps the shape even in wind. It is auxiliary propulsion devices that generates propulsive force and saves energy using offshore wind as natural energy. This Rigid Sail can be installed on existing vessels with minimal modification. To aim at realisation of retractable Rigid Sail, shape, arrangement and control system of the Rigid Sail are studied and designed. Our group plans to install it on an actual vessel in 2026 and commercialise it in 2027. TSUNEISHI SHIPBUILDING will coordinate the entire development project and design and manufacture the equipment, Mitsui E&amp;S Shipbuilding will study the control system and sail shape, and Akishima Laboratories will carry out performance evaluation using fluid analysis (CFD analysis) and other methods on the developed Rigid Sail. The TSUNEISHI Group will continue to contribute to further GHG reductions through energy savings and improved hull performance by utilising the research, development and experimental functions of the grouped Akishima Laboratory, including this project. \u25a0 TSUNEISHI 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 Email: pr@tsuneishi.com\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/www.tsuneishi-g.jp\/english\/news\/press\/2024\/06\/25201\/\" \/>\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=\"2024-06-12T16:00:00+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2026-06-12T01:49:46+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary\" \/>\n\t\t<meta name=\"twitter:title\" content=\"TSUNEISHI SHIPBUILDING Commercialise a New Device for Energy-Saving | Tsuneishi Group\" \/>\n\t\t<meta name=\"twitter:description\" content=\"TSUNEISHI SHIPBUILDING Co., Ltd. (Fukuyama, Hiroshima, Japan; Representative Director: OKUMURA Sachio) announces that it commercialises the Rigid Sail as a new device for energy-saving in cooperation with Mitsui E&amp;S Shipbuilding Co., Ltd. (Minato-ku, Tokyo, Japan; Representative Director: KOHATAKE Yasunori) and Akishima Laboratories (Mitsui Zosen) Inc. (Akishima, Tokyo, Japan; Representative Director: IGARASHI Kazuyuki). The Rigid Sail has wing-shape sail that keeps the shape even in wind. It is auxiliary propulsion devices that generates propulsive force and saves energy using offshore wind as natural energy. This Rigid Sail can be installed on existing vessels with minimal modification. To aim at realisation of retractable Rigid Sail, shape, arrangement and control system of the Rigid Sail are studied and designed. Our group plans to install it on an actual vessel in 2026 and commercialise it in 2027. TSUNEISHI SHIPBUILDING will coordinate the entire development project and design and manufacture the equipment, Mitsui E&amp;S Shipbuilding will study the control system and sail shape, and Akishima Laboratories will carry out performance evaluation using fluid analysis (CFD analysis) and other methods on the developed Rigid Sail. The TSUNEISHI Group will continue to contribute to further GHG reductions through energy savings and improved hull performance by utilising the research, development and experimental functions of the grouped Akishima Laboratory, including this project. \u25a0 TSUNEISHI 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 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\\\/06\\\/25201\\\/#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\\\/06\\\/25201\\\/#listItem\",\"name\":\"TSUNEISHI SHIPBUILDING Commercialise a New Device for Energy-Saving\"},\"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\\\/06\\\/25201\\\/#listItem\",\"position\":4,\"name\":\"TSUNEISHI SHIPBUILDING Commercialise a New Device for Energy-Saving\",\"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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The Rigid Sail has wing-shape sail that keeps the shape even in wind. It is auxiliary propulsion devices that generates propulsive force and saves energy using offshore wind as natural energy. This Rigid Sail can be installed on existing vessels with minimal modification. To aim at realisation of retractable Rigid Sail, shape, arrangement and control system of the Rigid Sail are studied and designed. Our group plans to install it on an actual vessel in 2026 and commercialise it in 2027. TSUNEISHI SHIPBUILDING will coordinate the entire development project and design and manufacture the equipment, Mitsui E&S Shipbuilding will study the control system and sail shape, and Akishima Laboratories will carry out performance evaluation using fluid analysis (CFD analysis) and other methods on the developed Rigid Sail. The TSUNEISHI Group will continue to contribute to further GHG reductions through energy savings and improved hull performance by utilising the research, development and experimental functions of the grouped Akishima Laboratory, including this project. \\u25a0 TSUNEISHI 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. 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It is auxiliary propulsion devices that generates propulsive force and saves energy using offshore wind as natural energy. This Rigid Sail can be installed on existing vessels with minimal modification. To aim at realisation of retractable Rigid Sail, shape, arrangement and control system of the Rigid Sail are studied and designed. Our group plans to install it on an actual vessel in 2026 and commercialise it in 2027. TSUNEISHI SHIPBUILDING will coordinate the entire development project and design and manufacture the equipment, Mitsui E&S Shipbuilding will study the control system and sail shape, and Akishima Laboratories will carry out performance evaluation using fluid analysis (CFD analysis) and other methods on the developed Rigid Sail. The TSUNEISHI Group will continue to contribute to further GHG reductions through energy savings and improved hull performance by utilising the research, development and experimental functions of the grouped Akishima Laboratory, including this project. \u25a0 TSUNEISHI 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. 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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\/06\/25201\/#webpage","url":"https:\/\/www.tsuneishi-g.jp\/english\/news\/press\/2024\/06\/25201\/","name":"TSUNEISHI SHIPBUILDING Commercialise a New Device for Energy-Saving | Tsuneishi Group","description":"TSUNEISHI SHIPBUILDING Co., Ltd. (Fukuyama, Hiroshima, Japan; Representative Director: OKUMURA Sachio) announces that it commercialises the Rigid Sail as a new device for energy-saving in cooperation with Mitsui E&S Shipbuilding Co., Ltd. (Minato-ku, Tokyo, Japan; Representative Director: KOHATAKE Yasunori) and Akishima Laboratories (Mitsui Zosen) Inc. (Akishima, Tokyo, Japan; Representative Director: IGARASHI Kazuyuki). The Rigid Sail has wing-shape sail that keeps the shape even in wind. It is auxiliary propulsion devices that generates propulsive force and saves energy using offshore wind as natural energy. This Rigid Sail can be installed on existing vessels with minimal modification. To aim at realisation of retractable Rigid Sail, shape, arrangement and control system of the Rigid Sail are studied and designed. Our group plans to install it on an actual vessel in 2026 and commercialise it in 2027. TSUNEISHI SHIPBUILDING will coordinate the entire development project and design and manufacture the equipment, Mitsui E&S Shipbuilding will study the control system and sail shape, and Akishima Laboratories will carry out performance evaluation using fluid analysis (CFD analysis) and other methods on the developed Rigid Sail. The TSUNEISHI Group will continue to contribute to further GHG reductions through energy savings and improved hull performance by utilising the research, development and experimental functions of the grouped Akishima Laboratory, including this project. \u25a0 TSUNEISHI 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 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\/06\/25201\/#breadcrumblist"},"datePublished":"2024-06-13T10:00:00+09:00","dateModified":"2026-06-12T10:49:46+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 Commercialise a New Device for Energy-Saving | Tsuneishi Group","og:description":"TSUNEISHI SHIPBUILDING Co., Ltd. (Fukuyama, Hiroshima, Japan; Representative Director: OKUMURA Sachio) announces that it commercialises the Rigid Sail as a new device for energy-saving in cooperation with Mitsui E&amp;S Shipbuilding Co., Ltd. (Minato-ku, Tokyo, Japan; Representative Director: KOHATAKE Yasunori) and Akishima Laboratories (Mitsui Zosen) Inc. (Akishima, Tokyo, Japan; Representative Director: IGARASHI Kazuyuki). The Rigid Sail has wing-shape sail that keeps the shape even in wind. It is auxiliary propulsion devices that generates propulsive force and saves energy using offshore wind as natural energy. This Rigid Sail can be installed on existing vessels with minimal modification. To aim at realisation of retractable Rigid Sail, shape, arrangement and control system of the Rigid Sail are studied and designed. Our group plans to install it on an actual vessel in 2026 and commercialise it in 2027. TSUNEISHI SHIPBUILDING will coordinate the entire development project and design and manufacture the equipment, Mitsui E&amp;S Shipbuilding will study the control system and sail shape, and Akishima Laboratories will carry out performance evaluation using fluid analysis (CFD analysis) and other methods on the developed Rigid Sail. The TSUNEISHI Group will continue to contribute to further GHG reductions through energy savings and improved hull performance by utilising the research, development and experimental functions of the grouped Akishima Laboratory, including this project. \u25a0 TSUNEISHI 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 Email: pr@tsuneishi.com","og:url":"https:\/\/www.tsuneishi-g.jp\/english\/news\/press\/2024\/06\/25201\/","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":"2024-06-12T16:00:00+00:00","article:modified_time":"2026-06-12T01:49:46+00:00","twitter:card":"summary","twitter:title":"TSUNEISHI SHIPBUILDING Commercialise a New Device for Energy-Saving | Tsuneishi Group","twitter:description":"TSUNEISHI SHIPBUILDING Co., Ltd. (Fukuyama, Hiroshima, Japan; Representative Director: OKUMURA Sachio) announces that it commercialises the Rigid Sail as a new device for energy-saving in cooperation with Mitsui E&amp;S Shipbuilding Co., Ltd. (Minato-ku, Tokyo, Japan; Representative Director: KOHATAKE Yasunori) and Akishima Laboratories (Mitsui Zosen) Inc. (Akishima, Tokyo, Japan; Representative Director: IGARASHI Kazuyuki). The Rigid Sail has wing-shape sail that keeps the shape even in wind. It is auxiliary propulsion devices that generates propulsive force and saves energy using offshore wind as natural energy. This Rigid Sail can be installed on existing vessels with minimal modification. To aim at realisation of retractable Rigid Sail, shape, arrangement and control system of the Rigid Sail are studied and designed. Our group plans to install it on an actual vessel in 2026 and commercialise it in 2027. TSUNEISHI SHIPBUILDING will coordinate the entire development project and design and manufacture the equipment, Mitsui E&amp;S Shipbuilding will study the control system and sail shape, and Akishima Laboratories will carry out performance evaluation using fluid analysis (CFD analysis) and other methods on the developed Rigid Sail. The TSUNEISHI Group will continue to contribute to further GHG reductions through energy savings and improved hull performance by utilising the research, development and experimental functions of the grouped Akishima Laboratory, including this project. \u25a0 TSUNEISHI 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 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":"25201","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 14:26:57","updated":"2026-06-12 04:30:12","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 Commercialise a New Device for Energy-Saving\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 Commercialise a New Device for Energy-Saving","link":"https:\/\/www.tsuneishi-g.jp\/english\/news\/press\/2024\/06\/25201\/"}],"_links":{"self":[{"href":"https:\/\/www.tsuneishi-g.jp\/english\/wp-json\/wp\/v2\/news\/25201","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=25201"}],"wp:term":[{"taxonomy":"industry","embeddable":true,"href":"https:\/\/www.tsuneishi-g.jp\/english\/wp-json\/wp\/v2\/industry?post=25201"},{"taxonomy":"news-format","embeddable":true,"href":"https:\/\/www.tsuneishi-g.jp\/english\/wp-json\/wp\/v2\/news-format?post=25201"},{"taxonomy":"news-tag","embeddable":true,"href":"https:\/\/www.tsuneishi-g.jp\/english\/wp-json\/wp\/v2\/news-tag?post=25201"},{"taxonomy":"enterprise","embeddable":true,"href":"https:\/\/www.tsuneishi-g.jp\/english\/wp-json\/wp\/v2\/enterprise?post=25201"},{"taxonomy":"news-cat","embeddable":true,"href":"https:\/\/www.tsuneishi-g.jp\/english\/wp-json\/wp\/v2\/news-cat?post=25201"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}