Ibusuki Makurazaki Line

The line was built by Japanese Government Railways in stages, beginning at the Kagoshima end. The first section, from Nishi-Kagoshima (now Kagoshima-Chūō) south to Goino, opened on 7 December 1930 as the Ibusuki Line. Construction then continued down the bay shore: the line reached Kiire in May 1934 and was extended to the hot-spring resort town of Ibusuki in December of the same year, and on to Yamakawa in March 1936.

After a long pause the railway pushed on around the southern tip of the peninsula. The Yamakawa–Nishi-Ei section opened on 22 March 1960 as a passenger-only line, bringing into service the stations of Ōyama and Nishi-Ōyama, the latter the southernmost on the JR system. The final segment, from Nishi-Ei to Makurazaki, opened on 31 October 1963, again for passengers only, completing the route to Makurazaki; on the same day the whole line was renamed from the Ibusuki Line to the Ibusuki Makurazaki Line.

Through the 1960s and 1970s the line settled into the operating pattern of a rural JNR route. Steam locomotives were withdrawn on 27 March 1973, and freight operations between Nishi-Kagoshima and Yamakawa were discontinued on 1 October 1980. Signalling was modernised when centralised traffic control (CTC) was introduced on the Nishi-Kagoshima–Yamakawa section on 8 March 1983.

With the breakup and privatisation of Japanese National Railways on 1 April 1987, the Ibusuki Makurazaki Line passed to the newly formed Kyushu Railway Company (JR Kyushu). Under JR Kyushu the line was gradually adapted for sparser, driver-only operation: one-man working began on the Ibusuki–Makurazaki section in 1992 and on the Nishi-Kagoshima–Ibusuki section in 1997, and on 14 March 1994 token (tablet) block working between Yamakawa and Makurazaki was abolished in favour of a special automatic block system. In 2004 the line's northern terminus, Nishi-Kagoshima, was renamed Kagoshima-Chūō to coincide with the arrival of the Kyushu Shinkansen.

In the twenty-first century the line has leaned on tourism while contending with its geography. The sightseeing limited express "Ibusuki no Tamatebako" was introduced on 12 March 2011, running between Kagoshima-Chūō and Ibusuki and replacing the earlier "Nanohana DX" rapid service. The exposed coastal alignment has proved vulnerable to landslips: on 21 June 2014 a cliff alongside the track between Nukumi and Satsuma-Imaizumi collapsed, derailing the "Ibusuki no Tamatebako No. 2" and injuring fifteen people; services were progressively restored over the following weeks. Soon afterwards JR Kyushu acknowledged that parts of the line were under review for possible discontinuation, reflecting the financial pressures on its least-used southern sections.

• 19307 December: the line opens as the Ibusuki Line, with the 14 km Nishi-Kagoshima (now Kagoshima-Chūō) to Goino section; Taniyama and Goino stations open.
• 193420 May: extended from Goino to Kiire. 19 December: extended on from Kiire to Ibusuki — about 32 km of new line in the year.
• 193625 March: extended a further 4 km from Ibusuki to Yamakawa; Yamakawa station opens.
• 196022 March: the 18 km Yamakawa–Nishi-Ei section opens as a passenger-only line; Ōyama and Nishi-Ōyama (the southernmost JR station) open.
• 196331 October: the final 20 km from Nishi-Ei to Makurazaki opens (passenger only), completing the route; the line is renamed from the Ibusuki Line to the Ibusuki Makurazaki Line.
• 197327 March: steam-locomotive operation on the line ends.
• 19801 October: freight operations between Nishi-Kagoshima and Yamakawa are discontinued.
• 19838 March: centralised traffic control (CTC) is introduced on the Nishi-Kagoshima–Yamakawa section.
• 19871 April: with the breakup and privatisation of Japanese National Railways, the line passes to the Kyushu Railway Company (JR Kyushu).
• 199215 July: one-man (driver-only) operation begins on the Ibusuki–Makurazaki section.
• 199414 March: token (tablet) block working between Yamakawa and Makurazaki is abolished and replaced by a special automatic block system.
• 200413 March: the northern terminus Nishi-Kagoshima is renamed Kagoshima-Chūō, coinciding with the opening of the Kyushu Shinkansen.
• 201112 March: the sightseeing limited express 'Ibusuki no Tamatebako' is introduced (Kagoshima-Chūō–Ibusuki), replacing the 'Nanohana DX' rapid service.
• 201421 June: a cliff beside the track between Nukumi and Satsuma-Imaizumi collapses, derailing the 'Ibusuki no Tamatebako No. 2' and injuring fifteen people; services are restored over the following weeks. JR Kyushu later acknowledges that parts of the line are under review for possible discontinuation.