Mitsubishi Heavy Industries Engine System Co., Ltd.

The founding of Mitsubishi Heavy Industries dates back to 1884 (Meiji 17). The first president was Yataro Iwasaki. In that year, Iwasaki borrowed the Nagasaki Shipyard from the Ministry of Construction and named it Nagasaki Shipyard, launching the shipbuilding business in earnest. This shipbuilding venture was later transferred to Mitsubishi Shipbuilding Co., Ltd., where it grew substantially.

The original form of today's Mitsubishi mark can be seen on the cast-iron water bucket created when Yataro Iwasaki founded the Tsukumo Trading Company. It combines the Iwasaki family crest "Sankai Bish" and the Yamauchi family crest "Mitsugashira", evolving through stages as shown below, and in 1910 (Meiji 43) became the current "three diamonds" shape.

In 1934 (Showa 9), the company added heavy machinery, aircraft, and railway vehicles to its shipbuilding operations, changed its name to Mitsubishi Heavy Industries Co., Ltd., and embarked on a new phase.

After World War II, in 1950 (Showa 25), following the Excessive Concentration of Economic Power Elimination Law aimed at dismantling zaibatsu, the company was temporarily divided into three entities: Nishinihon Heavy Industries Co., Ltd., Chushin Japan Heavy Industries Co., Ltd., and Higashi Japan Heavy Industries Co., Ltd.

In 1964 (Showa 39), the three companies merged to form the new Mitsubishi Heavy Industries Co., Ltd.

In 1970 (Showa 45), the automotive division became independent, establishing Mitsubishi Motors Corporation, which has since manufactured and sold automobiles.