| 1810 | The discovery of coal |
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| 1887 | The opening of the first shaft |
| 1890 | Mitsubishi bought the Hashima Coalmine from Magorokuro Nabeshima for ￥100,000 and it came to be managed by Mitsubishi as a branch mine of Takashima. |
| 1891 | Coal extraction was started. Water distilling equipment was installed, drinking water was supplied to every household, and salt was also produced. |
| 1893 | Work started on drilling the second shaft. An opening ceremony was held by the Mitsubishi Corporation for a private (company) ordinary primary school. |
| 1895 | The opening of the second shaft |
| 1896 | The old third shaft was completed. |
| 1897 | The first landfill operation was conducted. An underground fire occurred in the first shaft. The pit was abandoned due to flooding caused by the fire-fighting operations. |
| 1899 | The second landfill operation was conducted. |
| 1900 | The third landfill operation was conducted. |
| 1901 | The fourth landfill operation was conducted. |
| 1907年 | The fifth landfill operation was conducted. |
| 1911 | A combination of steam and electricity was used to power the hoists used in the second and third shafts. |
Find out more about the beginning of Gunkanjima (the Meiji period to the Taisho period)
| 1916 | The Osaka Asahi Shimbun reported that Hashima resembled a giant battleship with two chimneys. Construction of Building No. 30, Japan’s oldest reinforced-concrete apartment building, was completed. |
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| 1917 | The first submarine cable was laid between Futago and Hashima and power transmission was started. |
| 1918 | Construction of nine-story reinforced-concrete apartment buildings to provide company housing for day laborers Switching power from steam to electricity was almost complete. |
| 1921 | The Nagasaki Nichinichi Shimbun coined the name Gunkanjima (Battleship Island), noticing that the island resembled the Battleship Tosa. |
| 1922 | A landing pier (crane type) was completed. |
| 1925 | The fourth shaft (370 m deep) was completed. |
| 1933 | The pier was converted into a steel-framed loading pier. |
| 1934 | Excavation of the second shaft was completed to reach a depth of 636 m. |
| 1934 | The third shaft was decommissioned. |
| 1935 | A company kindergarten was opened on the roof of Building No. 20. |
| 1936 | Hashima Shrine was built. The second shaft started operation. Electric trolley trains started operating at the bottom of the second shaft. |
| 1941 | Annual coal output reached 411,000 tons, a record high. |
| 1942 | A fire occurred at the mouth of the second shaft. |
| 1944 | The Patriotic Dormitory (Building No. 65) was erected. |
| 1945 | The Hakuju Maru was sunk when it was loading coal. The galleries in the second shaft were flooded. |
| 1947 | Public phones were installed. |
| 1949 | Hashima was presented nationwide in a movie called “An Island without Greenery.” |
| 1953 | Construction of the Takahama Village Hashima Nursery School was completed. |
| 1954 | The first phase of construction of the Hashima Dolphin Pier was completed. |
| 1955 | Takahama-mura Hashima and Takashima-cho were merged to form Takashima-cho Hashima. |
| 1956 | Typhon No. 9 occurred. The Dolphin Pier, the southern wharf, and the Hashima swimming pool were destroyed. |
| 1957 | The building of the Hashima Elementary School and Hashima Junior High School burned down. The Hashima hospital and company housing No. 65 burned down as the fire spread. Construction of the Hashima Elementary School and Hashima Junior High School was completed. Construction of submarine waterworks was completed. The water supply ship Asagao Maru was decommissioned. |
| 1958 | Restoration of the Hashima hospital was completed. Construction of the Hashima South Swimming Pool was completed and a swimming meet was held. Construction of the second phase of the Hashima Dolphin Pier was completed. |
| 1959 | Typhoon No. 14 occurred. The Dolphin Pier, the plantation pier, and the revetment walls were severely damaged. |
| 1961 | The Tsuya Maru and the Sei Maru entered service. |
| 1962 | Construction of the third phase of the Hashima Dolphin Pier was completed. The yugao Maru was scrapped. |
| 1963 | A tree-planting campaign was started. |
| 1964 | Construction of a Hashima community center was completed. |
Find out more about the heyday of Gunkanjima (the Taisho period to the Showa period)
| 1970 | Construction was completed of the gymnastic hall, martial arts room, and school kitchen of the Hashima Elementary School and Junior High School. |
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| 1973 | A disastrous fire occurred. |
| 1974 | The Hashima mine was closed. Closing ceremonies were held for the Hashima branch, other facilities, and the Hashima Elementary School and Junior High School. Closing ceremonies were held for the Hashima branch, other facilities, and the Hashima Elementary School and Junior High School. |
| 1975 | The Japan Coast Guard installed the Hizen Hashima Lighthouse. |
Find out more about the closure of the Gunkanjima mine (the late Showa period)
| 2001 | The Mitsubishi Materials Corporation donated Hashima to Takashima-cho. |
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| 2014 | The site of the Takashima Coalmine became a national designated historic site. |
| 2015 | Gunkanjima was registered as a World Heritage Site. |
Find out more about Present-day Hashima Island（Gunkanjima）
In many cases, it is impossible to land due to sea conditions and bad weather. However, with the cooperation of the Gunkanjima Concierge, which boasts a high landing rate of 94.7% (*), we present a report on the landing tour that we participated in. We will acquaint you with all the charms of Gunkanjima, not to mention the highlights of the tour!
※Landing results from 2011 to 2018
