| Nov. 1949 |
Founded as Ohnami Transportation and Warehouses Corporation. |
| Nov. 1960 |
Started warehouse operations. |
| May 1963 |
Listed on the Second Section of the Osaka Securities Exchange. |
| Jun. 1963 |
Started coastal shipping services. |
| May 1965 |
Opened Sakai office. |
| Jun. 1969 |
Affiliated Ohnami Land Transportation. |
| Feb. 1971 |
Opened Warehouse No.7 in Sakai office. |
| Dec. 1971 |
Obtained licenses for construction business. |
| Jul. 1976 |
Started packaging services. |
| Jul. 1998 |
Changed the company name to Ohnami Corporation. |
| Mar. 1999 |
Obtained license for customs broker business, and started services as customs broker. |
| Sep. 2004 |
Corporate vessel, Daiichi Ohnami (Ohnami No. 1), started service. |
| Apr. 2005 |
Corporate vessel, Daini Ohnami (Ohnami No.2), started service. |
| Sep. 2014 |
Corporate vessel, Daisan Ohnami (Ohnami No.3), started service. |
| Feb. 2016 |
Wholly owned by Hitachi Zosen Corporation. |
| Apr. 2018 |
Corporate vessel, Daigo Ohnami (Ohnami No.5), started service. |