1881~Osaka Iron Works (proprietorship, the predecessor of Hitachi Zosen) era
Osaka Iron Works at the time of its founding
1881
E.H. Hunter, of Northern Ireland, founded the Osaka Iron Works (proprietorship) on the Ajikawa riverbank, Osaka.
1882
The Hatsu Maru (14GT wooden ship), the first new ship, is constructed.
1890
Kumagawa Maru, Japan's first steel-hulled ship, is built for Osaka Shosen (now Mitsui O.S.K. Lines).
1900
Sakurajima Works starts operations (relocated to the Ariake Machinery Works in September 1997).
1907
Japan's first Western-style whaling ship, the No. 2 Hogei Maru, is constructed.
Tokyo liaison office is opened.
1908
Japan's first tanker, the Tora Maru constructed.
1911
Innoshima Works starts operations.
1914~Old Osaka Iron Works Ltd. era
Headquarters around 1916(Nishi-ku, Osaka)
1914
Osaka Iron Works is reorganized as a joint-stock company.
1922
Chikkou Works starts operations.
1927
Dojima Ohashi, an arch bridge, and other structures are completed in succession for the municipal government of Osaka.
1930
The Heiyo Maru and Heian Maru large-scale cargo and passenger ships for Nippon Yusen K.K. are constructed (these ships established a new record for river launches in Japan).
1934~New Osaka Iron Works Ltd. era
1934
The company makes a new start as Osaka Iron Works incorporated (marking the incorporation of the current Hitachi Zosen Corporation) .
1937
Osaka Tekko, a technical journal, is inaugurated.
1943~As Hitachi Zosen Corporation
Headquarters around 1939 (Hitachi building, Minami-ku, Osaka)
1943
The name is changed to Hitachi Zosen Corporation.
Mukaishima Works starts operations.
1944
Kanagawa Works starts operations.
1948
Hitachi Zosen Technical Review is inaugurated.
1949
Technical Research Institute is opened.
The first whaling ship is constructed for Norway following World War II as a result of government trade.
1950
A technological tie-up for B&W-type diesel engines is concluded.
1951
The first B&W marine diesel engine is completed.
1956
Offices are opened in London and New York.
1960
A technological tie-up is concluded with Von Roll Environmental Technology Ltd. of Switzerland for a De Roll type refuse incineration plant.
1965
A De Roll-type refuse incineration plant is completed for the municipal government of Osaka (the first mechanical incineration plant with power generation facility manufactured in Japan).
Sakai Works starts operations.
1966
Sakurajima Works restarted as a specialized plant for land machinery.
1969
A number of orders are completed for De Roll-type refuse incineration plants for Tokyo Metropolis.
1971
Maizuru Works starts operations.
1973
Ariake Works starts operations.
1977
Construction is completed for a 500,000-ton tanker for Esso.
1979
Ariake Land Machinery Works starts operations.
1981
Hitachi Zosen celebrates its 100th anniversary.
1987
The world's first multiple-face shield tunneling machine is completed.
1990
Construction of ultra-large steel mill plants is completed for Baoshan Iron and Steel of China and Sicartsa Steel Mill in Mexico
1991
Ibaraki Works starts operations.
1993
Construction of Japan's first double-hull VLCC is completed.
Sakai Works starts operation as a specialized plant for steel structures.
Slurry-shield tunnel boring machine (with one of the world's largest diameters of 14.14m) is produced.
1994
The world's first triple-face shield tunneling machine is completed.
1996
A refuse incineration plant for the Clean Association of Eastern Saitama District receives MITI (now METI) Minister prize for excellent environmental equipment.
Electric power supply business is inaugurated.
Japan's first super refuse-fired power generation plant comes on stream.
1997
An order is received for the world's first fifth-generation semisub rig.
Sakurajima Works is closed, and facilities are transferred to Ariake Works; Ariake Machinery Works starts operations.
The world's largest B&W marine diesel engine (74,640 hp) at the time is completed.
2000
An order is received for the No.1 gasification melting furnace.
Yumemai Ohashi, the world's first floating swing bridge is constructed.
8,000 hours of continuous operations are achieved by refuse incineration plant delivered for Taiwan.
2001
A large-scale desalination plant is constructed in Saudi Arabia.
2002~Newborn "Hitz" Hitachi Zosen
The current head office (Suminoe-ku, Osaka)
2002
The Basic Agreement on Consolidation of Shipbuilding Operations is concluded with NKK Corp (now JFE Steel Corporation).
The shipbuilding operation is transferred to Universal Shipbuilding Corporation on October 1.
The Hitz brand name goes into use as of October 1.
HEC Corporation is acquired.
2003
The world's most advanced electronic controll marine engine for large vessels is produced.
A desalination plant is constructed for Oman.
2004
Kyoto Municipal Waste Edible Oil Fuel Production Facility is completed with the greatest manufacturing capacity in Japan.
2005
Refuse incineration plant is constructed for Odate City (the first intermediate processing operation of municipal refuse in Japan under PFI legislation).
2006
A desalination plant is constructed in Abu Dhabi.
2007
One of Japan's largest gasification melting furnace is completed for Toyoda City.
2008
A new factory is constructed in Sakai Works for extension of industrial machinery and shield tunneling machinery production.
2009
Ten Group companies are absorbed.
Completed a new plant for manufacture of medium-sized diesel engines at Ariake Works.
Launched a joint venture in China for manufacture of marine diesel engines.
2010
Launched a joint venture in China for manufacture of marine deck machinery.
Vessel put into service employing world's first selective catalytic reduction (SCR) NOx removal system for marine engines compliant with IMO Tier III NOx emission standards.
2012
Established a joint-venture manufacturer of process equipment in India.
Precision Machinery Center is completed.
Shield tunneling machine with world's largest diameter, at 17.45 m, is completed for Seattle, Washington
2013
Acquired all shares of U.S.-based NAC International Inc.
Established local subsidiary in Myanmar.
2014
Established local subsidiary in Indonesia.
Daiki Ataka Engineering Co.,Ltd is acquired.
SCR system for marine engines received world's first FTA approval.
2015
Company expands into retail electricity market as power producer and supplier (PPS) with power produced from renewable energy.
Omonogawa Wind Power Station is completed, starts operations under Omonogawa Wind Power Co., Ltd.
2017
Acquired shares of "Osmoflo Group".
Long-term Hitz 2030 Vision and medium-term management plan Change & Growth start.
Established local subsidiary in Thailand.
2018
Company becomes Japan's first issuer in manufacturing industry of Hitachi Zosen Green Bonds.
Joint-venture company aimed at expanding our service business in China is formed.
Hitz Advanced Information Technology Center (A.I/TEC) starts operations.
Completion of Phase 1 construction ,the world largest WtE Plant in Changsha China.
2020
The New Medium-term Management Plan "Foward 22" started.
Completed Japan's first undersea installation type flap gate type floodgate installation work for Iwate Prefecture.
2021
Hitachi Zosen celebrates its 140th anniversary.
'PtG Square' starts operations in the Chikko Works.
Established Underground Infrastructure Technologies Corporation (UGITEC), a joint venture with Kawasaki Heavy Industries for the shild machine business.
2022
Hitachi Zosen Inova AG acquires shares in Steinmüller Babcock Environment Group and makes it a subsidiary.
Selected as a DX Certified Operator by the Ministry of Economy, Trade and Industry.
Signing of the UN Global Compact.
2023
The New Medium-term management plan "Forward 25" start.