History
| 1903 | The first president, Katsutaro Kambara, founded a shipping business (Kambara Kisen Co., Ltd.). |
| 1917 | Built the “Shiohama Dockyard” where the current Tsuneishi Factory is located. |
| 1942 | Renamed the dockyard “Tsuneishi Shipbuilding” and re-established the company. Commenced the construction and repair of wooden ships for domestic transportation. |
| 1958 | Constructed the first steel ship, “Mikomaru” (a 361-dwt carrier). |
| 1968 | The 200,000 metric ton Ship Repair Factory completed. |
| 1976 | Linked up with Hashihama Shipbuilding Co., Ltd. |
| 1984 | Constructed the first TESS40 (the original 40,000-ton type standard carrier) series. |
| 1986 | Established the Ship Research Department. |
| 1991 | Constructed the largest bulk carrier (180,000-ton type) (in conjunction with Hashihama Shipbuilding). |
| 1992 | Established a design company, TSUNEISHI TECHNICAL SERVICES (Phils.) Inc. (TTSP) in the Philippines. |
| 1994 | Constructed the first TESS45 (an original 45,000-ton type standard carrier) series. Established TSUNEISHI HEAVY INDUSTRIES (CEBU), Inc. (THI), the largest shipbuilding dockyard in the Philippines. |
| 1997 | Constructed the first ship (a 23,000-ton type carrier) at THI. |
| 1998 | Constructed Japan’s first twin skeg shuttle tanker (in conjunction with Hashihama Shipbuilding). |
| 1999 | Acquired the ISO9001 certificate. (June) Launched the 100th vessel in the TESS40/45 series. (June) |
| 2000 | Merged with Hashihama Shipbuilding. (June) Completed construction of the first TESS52 ship. (October) |
| 2001 | Established TSUNEISHI (ZHENJIANG) STEEL STRUCTURE Co., Ltd. a company for ship outfitting in the Dan tu Economic Development Zone of Chiangsu Province, China.(June) |
| 2003 | Established the Tsuneishi Group (Zhoushan) Marine & Development Inc. (March) Adopted a new logo upon the 100th anniversary of the Group. (April) Established the Tsuneishi Group (Zhoushan) Hull-body Production Inc. (December) |
| 2004 | Formed a comprehensive business alliance with Samsung Heavy Industries.(March) Executed an agreement with Hiroshima University for comprehensive research cooperation.(June) |
| 2005 | Completed of the first Kamsarmax Bulker. (February) Acquired the ISO14001 certificate. (December) Tsuneishi (Shanghai) Ship Design Co., Ltd. (December) |
| 2006 | Completed the first TESS58, “MEDI LISBON”. (December) |
| 2007 | Established Tsuneishi Holdings Corporation by merging 11 group companies. (January) Established a design office in Fukuoka. (April) Completed “STELLA MARIS,” the 200th ship in the TESS Handymax series.(June) Reorganized Tsuneishi Group (Zhoushan) Shipbuilding INC. by merging Tsuneishi Group (Zhoushan) Marine & Development Inc. and Tsuneishi Group (Zhoushan) Hull-body Production Inc. |
| 2009 | Completed and launched the operation of the new building dock at TSUNEISHI HEAVY INDUSTRIES (CEBU), Inc. and TSUNEISHI GROUP (ZHOUSHAN) SHIPBUILDING INC. |
| 2010 | Constructed “Tenshumaru,” the first ship in the T-CORE180 series at Tsuneishi Heavy Industries (Cebu), Inc. in the Philippines. |
| 2011 | Split up companies under the umbrella of Tsuneishi Holdings Corporation.（January） Completed the 100th KAMSARMAX Bulker, 82,000-ton type bulk carrier. (February) Completed the first TESS98, the 98,000-ton type bulk carrier. (April) Completed experimental model ship “Josho-maru”. (September) Completed the 100th TESS58.(November) |
| 2012 | Completed the 300th vessel of TESS HANDYMAX series (January) |
| 2013 | Tsuneishi Group (Zhoushan) Shipbuilding INC. has completed the first 1,020 TEU Container Carrier (May) |
| 2014 | Transferred all shares of Tadotsu Shipbuilding Co.,Ltd (December) |
| 2015 | Completed 200th KAMSARMAX Bulker (January) |
| 2017 | Constructed the new Aonagi dormitory for unmarried employees (April) Constructed the cruise ship guntû (September) TSUNEISHI SHIPBUILDING centennial (July) Completed the first TESS64 AEROLINE, 63,700 MT bulk carrier(July) |
| 2018 | Constructed first 2,800 TEU container carrier (April) Formed business cooperation agreement with Mitsui E&S Shipbuilding in the commercial ship business field (May) |
| 2019 | Completed LRI Product/Chemical Tanker (March) Signed an agreement with Hiroshima University on a comprehensive research partnership (May) Completed the 300th Kamsarmax bulk carrier (September) Completed the 500th vessel of the TESS series (November) |
| 2020 | Commenced discussions on a capital alliance with Mitsui E&S Shipbuilding regarding merchant vessel business (July) |
| 2022 | KANDA DOCKYARD Co., Ltd. started its business. (April) |
| 2022 | TSUNEISHI SHIPBUILDING acquired Mitsui E&S Shipbuilding Co., Ltd. as a subsidiary in October 2022 by partial transfer of share, meanwhile acquiring the subsidiaries of Mitsui E&S Shipbuilding, Niigata Shipbuilding & Repair, Inc., and MES YURA DOCKYARD CO.,LTD. (The company name of MES YURA DOCKYARD CO., LTD was changed into YURA DOCKYARD CO., LTD. in January 2023.) |
| 2024 | Akishima Laboratories (Mitsui Zosen) Inc. became a consolidated subsidiary |