1917	Established as the Shipbuilding Division of Former Mitsui & Co. in Tamano City (Presently), Okayama Pref.
1924	Completed the Japan's first ship driven by diesel engine “Akagisan Maru”.
1937	Separated from Former Mitsui & Co. to become Tama Shipyard Co., Ltd.
1942	Changed company name to Mitsui Shipbuilding & Engineering Co., Ltd.
1948	Completed the first export steel whaler KNURR built in Japan since the end of the war.
1952	Moved head office functions to Tokyo. Organized the department for research and development at Tamano Shipyard.
1961	Launched the world's first large-size automated vessel, “Kinkasan Maru”.
1962	Chiba Works commenced operation.
1966	Exported the first Japanese-made hovercraft to Thailand.
1967	Opened Chiba Laboratory at Chiba Works.
1968	Completed the 500,000 dwt building dock at Chiba Works.
1971	Completed the “Mitsuminesan Maru”, super automated tanker.
1973	Repair specializing Yura factory started operation.
1975	Built the “Berge Emperor”, a 400,000 dwt class oil tanker, the largest of its kind ever built by the company.
1978	Opened the Akishima Laboratory.
1984	Completed the 125,000m3 LNG carrier “Senshu Maru”.
1995	Completed 10,000m-class deep sea unmanned ROV “Kaiko”.
1999	Changed the former Yura Dockyard into a subsidiary company, MES Yura Inc.
2002	Launched deep-sea scientific riser drilling vessel “CHIKYU” for Japan Marine Science and Technology Center.
2003	Established Niigata Shipbuilding & Repair, Inc., buying out shipbuilding related business from Niigata Engineering Co. Ltd.
2006	Completed installation of 1000-ton goliath crane at Chiba Shipyard.
2007	Completed Technology Succession Centers in Tamano Works and Chiba Works. Operated Safety Training Center in Tamano Works. Completed world largest class ore carrier 320,000DWT “BRASIL MARU”.
2010	Deliveries of “Mitsui’s 56”,a big hit 56,000dwt Bulk Carrier series by MES reached 100 sets.
2013	Completed “neo Supramax 66BC “,1st ship of the new generation Eco-ship.
2015	Bought out TGE Marine Gas Engineering GmbH, a German gas carrier engineering company.
2017	Marked 100th anniversary.
2018	Shift into holding company structure and changed its name to “Mitsui E&S Holdings”. Confrmed with the next generation environmental regulation and low fuel consumption 87,000DWT post panamax bulk carrier “neo 87 BC” /Develoment and order acceptance.
2019	Team KUROSHIO “seafloor exploration team from Japan, won the 2nd prize Shell Ocearn Discovery XPRIZE” Round 2 actual sea area competition.
2021	The end of shipbuilding operation at the Chiba shipyard. Transfer of naval vessel and government ship business to Mitsubishi Heavy Industries, Ltd. Capital tie-up with Tsuneishi Shipbuilding Co., Ltd.
2022	Join Tsuneishi Group.